Patent Publication Number: US-2022219852-A1

Title: Wound Body, Core Body for Wound Body, Combination of Wound Body and Support Shaft, and Combination of Wound Body and Medical Packing Device

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application is the United States national phase of International Application No. PCT/JP2021/015943 filed Apr. 20, 2021, and claims priority to Japanese Patent Application Nos. 2020-77411 and 2020-77431, filed Apr. 24, 2020, and 2020-78881 and 2020-78895, filed Apr. 28, 2020, the disclosures of which are hereby incorporated by reference in their entirety. 
    
    
     BACKGROUND OF THE INVENTION 
     Field of the Invention 
     The present invention relates to a wound body formed by winding a packing material in a roll shape that is a strip-shaped sheet, a core body for a wound body that forms the wound body, a combination of the wound body and a support shaft configured to support the wound body, and a combination of the wound body and a medicine packing apparatus configured to pack a medicine using the packing material. 
     Description of Related Art 
     There is a medicine packing apparatus configured to pack a medicine using a packing material in the form of a strip-shaped sheet. JP-U S56-44757 B describes an example of a support device for the packing material included in such a medicine packing apparatus. The configuration described in the aforesaid publication includes a mounting base (referred to as “apparatus body” in Patent Literature 1, the following descriptions in parenthesis are the same), and a support shaft (feeding drum) extending therefrom, in which the support shaft is rotatably supported by the mounding base. A core body (core cylinder) is mounted on an outer periphery of the support shaft. A packing material (packing paper) is wound around the outer periphery of the core body to form a roll-shaped wound body. Packing of a medicine can be made for the packing material sequentially drawn out from the wound body. 
     CITATION LIST 
     Patent Literature 
     Patent Literature 1: JP-U S56-44757 B 
     SUMMARY OF THE INVENTION 
     For the wound body described in the aforementioned publication, a configuration for aligning the circumferential position of the wound body relative to the support shaft is not included. Meanwhile, since the wound body with the packing material wound therearound is relatively heavy. Thus, there was a difficulty for an operator in aligning the circumferential position of the wound body relative to the support shaft. 
     It is an object of the present invention to provide a wound body, a core body for wound body, a combination of the wound body and a support shaft, and a combination of the wound body and a medicine packing apparatus that are able to facilitate the mounting operation of the wound body to the support shaft. 
     According to the present invention, there is provided a wound body formed by winding a long sheet, wherein the wound body is supportable by a support shaft, the support shaft includes a cylindrical outer peripheral part having a proximal end and a distal end, and is configured to be rotatable around a central axis of the outer peripheral part, the outer peripheral part includes a first projection located at the proximal end and projecting outward in a radial direction, and a second projection located at the distal end and projecting outward in the radial direction, in which a projecting amount of the second projection projecting outward in the radial direction with respect to the outer peripheral part is smaller than that of the first projection, the wound body includes a core body having a cylindrical shape, and the long sheet wound around an outer periphery of the core body, the core body includes a cylindrical inner peripheral part having one end and an other end, the inner peripheral part includes a one-end-side first recess part located at the one end and recessing outward in the radial direction, an other-end-side first recess part located at the other end and recessing outward in the radial direction, and a second recess part located to extend from the one end to the other end and recessing outward in the radial direction, in which a recessing amount of the second recess part recessing outward in the radial direction with respect to the inner peripheral part is smaller than that of the one-end-side first recess part and the other-end-side first recess part, the core body is mountable on the outer periphery of the support shaft from the one end side of the core body or the other end side of the core body, and from the distal end side of the support shaft, the support shaft and the core body are integrally rotatable around the central axis by engagement of the first projection with the one-end-side first recess part or the other-end-side first recess part in a state where the core body is mounted on the outer periphery of the support shaft, and the circumferential position of the first projection around the central axis is aligned with the circumferential position of the one-end side first recess part or the other-end-side first recess part around the central axis by the engagement of the second projection with the second recess part when the core body is mounted on the outer periphery of the support shaft. 
     According to the present invention, there is further provided a wound body formed by winding a long sheet, including: a core body having a cylindrical shape, and the long sheet wound around an outer periphery of the core body, wherein the core body includes a cylindrical inner peripheral part having one end and an other end, and the inner peripheral part includes a one-end-side first recess part located at the one end and recessing outward in a radial direction, an other-end-side first recess part located at the other end and recessing outward in the radial direction, and a second recess part located to extend from the one end to the other end and recessing outward in the radial direction, in which a recessing amount of the second recess part recessing outward in the radial direction with respect to the inner peripheral part is smaller than that of the one-end-side first recess part and the other-end-side first recess part. 
     According to the present invention, there is further provided a core body for wound body that is used for a wound body formed by winding a long sheet, wherein the wound body is supportable by a support shaft, the support shaft includes a cylindrical outer peripheral part having a proximal end and a distal end, and is configured to be rotatable around a central axis of the outer peripheral part, the outer peripheral part includes a first projection located at the proximal end and projecting outward in a radial direction, and a second projection located at the distal end and projecting outward in the radial direction, in which a projecting amount of the second projection projecting outward in the radial direction with respect to the outer peripheral part is smaller than that of the first projection, the core body for the wound body has a cylindrical shape, is configured to allow the long sheet to be wound around an outer periphery of the core body, and includes a cylindrical inner peripheral part having one end and an other end, the inner peripheral part includes an one-end-side first recess part located at the one end and recessing outward in the radial direction, an other-end-side first recess part located at the other end and recessing outward in the radial direction, and a second recess part located to extend from the one end to the other end and recessing outward in the radial direction, in which a recessing amount of the second recess part recessing outward in the radial direction with respect to the inner peripheral part is smaller than that of the one-end-side first recess part and the other-end-side first recess part, the core body for wound body is mountable on the outer periphery of the support shaft from the one end side of the core body for wound body or the other end side of the core body for wound body, and from the distal end side of the support shaft, the support shaft and the core body for wound body are integrally rotatable around the central axis by engagement of the first projection with the one-end-side first recess part or the other-end-side first recess part in a state where the core body for wound body is mounted on the outer periphery of the support shaft, and the circumferential position of the first projection around the central axis is aligned with the circumferential position of the one-end side first recess part or the other-end-side first recess part around the central axis by the engagement of the second projection with the second recess part when the core body for wound body is mounted on the outer periphery of the support shaft. 
     According to the present invention, there is further provided a combination of a wound body and a support shaft, the combination including a wound body formed by winding a long sheet, and a support shaft that supports the wound body, wherein the support shaft includes a cylindrical outer peripheral part having a proximal end and a distal end, and is configured to be rotatable around a central axis of the outer peripheral part, the outer peripheral part includes a first projection located at the proximal end and projecting outward in a radial direction, and a second projection located at the distal end and projecting outward in the radial direction, in which a projecting amount of the second projection projecting outward in the radial direction with respect to the outer peripheral part is smaller than that of the first projection, the wound body includes a core body having a cylindrical shape, and the long sheet wound around an outer periphery of the core body, the core body includes a cylindrical inner peripheral part having one end and an other end, the inner peripheral part includes a one-end-side first recess part located at the one end and recessing outward in the radial direction, an other-end-side first recess part located at the other end and recessing outward in the radial direction, and a second recess part located to extend from the one end to the other end and recessing outward in the radial direction, in which a recessing amount of the second recess part recessing outward in the radial direction with respect to the inner peripheral part is smaller than that of the one-end-side first recess part and the other-end-side first recess part, the core body is mountable on the outer periphery of the support shaft from the one end side of the core body or the other end side of the core body, and from the distal end side of the support shaft, the support shaft and the core body are integrally rotatable around the central axis by the engagement of the first projection with the one-end-side first recess part or the other-end-side first recess part in a state where the core body is mounted on the outer periphery of the support shaft, and the circumferential position of the first projection around the central axis is aligned with the circumferential position of the one-end side first recess part or the other-end-side first recess part around the central axis by the engagement of the second projection with the second recess part when the core body is mounted on the outer periphery of the support shaft. 
     According to the present invention, there is further provided a combination of a wound body and a medicine packing apparatus, the combination including a wound body formed by winding a long sheet, and a medicine packing apparatus that includes a support shaft for supporting the wound body, and that is configured to pack a medicine using the long sheet wound off from the wound body supported by the support shaft, wherein the support shaft includes a cylindrical outer peripheral part having a proximal end and a distal end, and is configured to be rotatable around a central axis of the outer peripheral part, the outer peripheral part includes a first projection located at the proximal end and projecting outward in a radial direction, and a second projection located at the distal end and projecting outward in the radial direction, in which a projecting amount of the second projection projecting outward in the radial direction with respect to the outer peripheral part is smaller than that of the first projection, the wound body includes a core body having a cylindrical shape, and the long sheet wound around an outer periphery of the core body, the core body includes a cylindrical inner peripheral part having one end and an other end, the inner peripheral part includes a one-end-side first recess part located at the one end and recessing outward in the radial direction, an other-end-side first recess part located at the other end and recessing outward in the radial direction, and a second recess part located to extend from the one end to the other end and recessing outward in the radial direction, in which a recessing amount of the second recess part recessing outward in the radial direction with respect to the inner peripheral part is smaller than that of the one-end-side first recess part and the other-end-side first recess part, the core body is mountable on the outer periphery of the support shaft from the one end side of the core body or the other end side of the core body, and from the distal end side of the support shaft, the support shaft and the core body are integrally rotatable around the central axis by the engagement of the first projection with the one-end-side first recess part or the other-end-side first recess part in a state where the core body is mounted on the outer periphery of the support shaft, and the circumferential position of the first projection around the central axis is aligned with the circumferential position of the one-end-side first recess part or the other-end-side first recess part around the central axis by the engagement of the second projection with the second recess part when the core body is mounted on the outer periphery of the support shaft. 
     According to the present invention, there is provided a wound body formed by winding a long sheet, wherein the wound body is supportable by a support shaft, the support shaft includes a cylindrical outer peripheral part having a proximal end and a distal end, and is configured to be rotatable around a central axis of the outer peripheral part, the outer peripheral part includes a first projection located at the proximal end and projecting outward in a radial direction, and a second projection located at the distal end and projecting outward in the radial direction, in which a projecting amount of the second projection projecting outward in the radial direction with respect to the outer peripheral part is smaller than that of the first projection, the wound body includes a core body having a cylindrical shape, and the long sheet wound around an outer periphery of the core body, the core body includes a cylindrical inner peripheral part having one end and an other end, the inner peripheral part includes a first recess part located at the one end and recessing outward in the radial direction, and a second recess part located to extend from the one end to the other end and recessing outward in the radial direction, in which a recessing amount of the second recess part recessing outward in the radial direction with respect to the inner peripheral part is smaller than that of the first recess part, the core body is mountable on the outer periphery of the support shaft from the one end side of the core body and from the distal end side of the support shaft, the support shaft and the core body are integrally rotatable around the central axis by the engagement of the first projection with the first recess part in a state where the core body is mounted on the outer periphery of the support shaft, the circumferential position of the first projection around the central axis is aligned with the circumferential position of the first recess part around the central axis by the engagement of the second projection with the second recess part when the core body is mounted on the outer periphery of the support shaft, and the second recess part includes a leading part that is configured to lead the second projection, the leading part is configured to lead the second projection to allow the circumferential positions of the first projection and the first recess part around the central axis to be aligned with each other when the core body is mounted on the outer periphery of the support shaft, the second recess part includes a guide part that guides the second projection, the guide part is located closer to the other end of the core body than the leading part, and is configured to guide the second projection to allow the circumferential positions of the first projection and the first recess part around the central axis to be kept in alignment with each other when the core body is mounted on the outer periphery of the support shaft, the outer peripheral part of the support shaft includes a third projection that is located at an intermediate position between the proximal end of the support shaft and the distal end of the support shaft and that projects outward in the radial direction, the third projection is located at the same position as the second projection in the circumferential direction around the central axis, a projecting amount of the third projection projecting outward in the radial direction with respect to the outer peripheral part of the support shaft is the same as that of the second projection, and the third projection is guided by the guide part to allow the circumferential positions of the first projection and the first recess part around the central axis to be kept in alignment with each other when the core body is mounted on the outer periphery of the support shaft. 
     According to the present invention, there is further provided a core body for wound body that is used for a wound body formed by winding a long sheet, wherein the wound body is supportable by a support shaft, the support shaft includes a cylindrical outer peripheral part having a proximal end and a distal end, and is configured to be rotatable around a central axis of the outer peripheral part, the outer peripheral part includes a first projection located at the proximal end and projecting outward in a radial direction, and a second projection located at the distal end and projecting outward in the radial direction, in which a projecting amount of the second projection projecting outward in the radial direction with respect to the outer peripheral part is smaller than that of the first projection, the core body for the wound body has a cylindrical shape, is configured to allow the long sheet to be wound around an outer periphery of the core body, and includes a cylindrical inner peripheral part having one end and an other end, the inner peripheral part includes a first recess part located at the one end and recessing outward in the radial direction, and a second recess part located to extend from the one end to the other end and recessing outward in the radial direction, in which a recessing amount of the second recess part recessing outward in the radial direction with respect to the inner peripheral part is smaller than that of the first recess part, the core body for wound body is mountable on the outer periphery of the support shaft from the one end side of the core body for wound body and from the distal end side of the support shaft, the support shaft and the core body for wound body are integrally rotatable around the central axis by the engagement of the first projection with the first recess part in a state where the core body for wound body is mounted on the outer periphery of the support shaft, the circumferential position of the first projection around the central axis is aligned with the circumferential position of the first recess part around the central axis by the engagement of the second projection with the second recess part when the core body for wound body is mounted on the outer periphery of the support shaft, the second recess part includes a leading part that is configured to lead the second projection, the leading part is configured to lead the second projection to allow the circumferential positions of the first projection and the first recess part around the central axis to be aligned with each other when the core body is mounted on the outer periphery of the support shaft, the second recess part includes a guide part that guides the second projection, the guide part is located closer to the other end of the core body than the leading part, and is configured to guide the second projection to allow the circumferential positions of the first projection and the first recess part around the central axis to be kept in alignment with each other when the core body is mounted on the outer periphery of the support shaft, the outer peripheral part of the support shaft includes a third projection that is located at an intermediate position between the proximal end of the support shaft and the distal end of the support shaft and that projects outward in the radial direction, the third projection is located at the same position as the second projection in the circumferential direction around the central axis, a projecting amount of the third projection projecting outward in the radial direction with respect to the outer peripheral part of the support shaft is the same as that of the second projection, and the third projection is guided by the guide part to allow the circumferential positions of the first projection and the first recess part around the central axis to be kept in alignment with each other when the core body is mounted on the outer periphery of the support shaft. 
     According to the present invention, there is further provided a combination of a wound body and a support shaft, the combination including a wound body formed by winding a long sheet, and a support shaft that supports the wound body, wherein the support shaft includes a cylindrical outer peripheral part having a proximal end and a distal end, and is configured to be rotatable around a central axis of the outer peripheral part, the outer peripheral part includes a first projection located at the proximal end and projecting outward in a radial direction, and a second projection located at the distal end and projecting outward in the radial direction, in which a projecting amount of the second projection projecting outward in the radial direction with respect to the outer peripheral part is smaller than that of the first projection, the wound body includes a core body having a cylindrical shape, and the long sheet wound around an outer periphery of the core body, the core body includes a cylindrical inner peripheral part having one end and an other end, the inner peripheral part includes a first recess part located at the one end and recessing outward in the radial direction, and a second recess part located to extend from the one end to the other end and recessing outward in the radial direction, in which a recessing amount of the second recess part recessing outward in the radial direction with respect to the inner peripheral part is smaller than that of the first recess part, the core body is mountable on the outer periphery of the support shaft from the one end side of the core body and from the distal end side of the support shaft, the support shaft and the core body are integrally rotatable around the central axis by engagement of the first projection with the first recess part in a state where the core body is mounted on the outer periphery of the support shaft, the circumferential position of the first projection around the central axis is aligned with the circumferential position of the first recess part around the central axis by the engagement of the second projection with the second recess part when the core body is mounted on the outer periphery of the support shaft, the second recess part includes a leading part that is configured to lead the second projection, the leading part is configured to lead the second projection to allow the circumferential positions of the first projection and the first recess part around the central axis to be aligned with each other when the core body is mounted on the outer periphery of the support shaft, the second recess part includes a guide part that guides the second projection, the guide part is located closer to the other end of the core body than the leading part, and is configured to guide the second projection to allow the circumferential positions of the first projection and the first recess part around the central axis to be kept in alignment with each other when the core body is mounted on the outer periphery of the support shaft, the outer peripheral part of the support shaft includes a third projection that is located at an intermediate position between the proximal end of the support shaft and the distal end of the support shaft and that projects outward in the radial direction, the third projection is located at the same position as the second projection in the circumferential direction around the central axis, a projecting amount of the third projection projecting outward in the radial direction with respect to the outer peripheral part of the support shaft is the same as that of the second projection, and the third projection is guided by the guide part to allow the circumferential positions of the first projection and the first recess part around the central axis to be kept in alignment with each other when the core body is mounted on the outer periphery of the support shaft. 
     According to the present invention, there is further provided a combination of a wound body and a medicine packing apparatus, the combination including a wound body formed by winding a long sheet, and a medicine packing apparatus that includes a support shaft for supporting the wound body, and that is configured to pack a medicine using the long sheet wound off from the wound body supported by the support shaft, wherein the support shaft includes a cylindrical outer peripheral part having a proximal end and a distal end, and is configured to be rotatable around a central axis of the outer peripheral part, the outer peripheral part includes a first projection located at the proximal end and projecting outward in a radial direction, and a second projection located at the distal end and projecting outward in the radial direction, in which a projecting amount of the second projection projecting outward in the radial direction with respect to the outer peripheral part is smaller than that of the first projection, the wound body includes a core body having a cylindrical shape, and the long sheet wound around an outer periphery of the core body, the core body includes a cylindrical inner peripheral part having one end and an other end, the inner peripheral part includes a first recess part located at the one end and recessing outward in the radial direction, and a second recess part located to extend from the one end to the other end and recessing outward in the radial direction, in which a recessing amount of the second recess part recessing outward in the radial direction with respect to the inner peripheral part is smaller than that of the first recess part, the core body is mountable on the outer periphery of the support shaft from the one end side of the core body and from the distal end side of the support shaft, the support shaft and the core body are integrally rotatable around the central axis by engagement of the first projection with the first recess part in a state where the core body is mounted on the outer periphery of the support shaft, the circumferential position of the first projection around the central axis is aligned with the circumferential position of the first recess part around the central axis by engagement of the second projection with the second recess part when the core body is mounted on the outer periphery of the support shaft, the second recess part includes a leading part that is configured to lead the second projection, the leading part is configured to lead the second projection to allow the circumferential positions of the first projection and the first recess part around the central axis to be aligned with each other when the core body is mounted on the outer periphery of the support shaft, the second recess part includes a guide part that guides the second projection, the guide part is located closer to the other end of the core body than the leading part, and is configured to guide the second projection to allow the circumferential positions of the first projection and the first recess part around the central axis to be kept in alignment with each other when the core body is mounted on the outer periphery of the support shaft, the outer peripheral part of the support shaft includes a third projection that is located at an intermediate position between the proximal end of the support shaft and the distal end of the support shaft, and that projects outward in the radial direction, the third projection is located at the same position as the second projection in the circumferential direction around the central axis, a projecting amount of the third projection projecting outward in the radial direction with respect to the outer peripheral part of the support shaft is the same as that of the second projection, and the third projection is guided by the guide part to allow the circumferential positions of the first projection and the first recess part around the central axis to be kept in alignment with each other when the core body is mounted on the outer periphery of the support shaft. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view showing a schematic configuration of a packing section in a medicine packing apparatus according to an embodiment of the present invention. 
         FIG. 2  is a perspective view showing a support shaft and a core body of a wound body in the packing section. 
         FIG. 3  is a cross sectional perspective view along an axis of the core body showing a half of the core body. 
         FIG. 4  is a perspective view showing the core body in a state of being mounted to the support shaft of the packing section. 
         FIG. 5  is an explanatory view showing a state in which the circumferential position of the core body is aligned relative to the support shaft. 
         FIG. 6  is a perspective view showing one example (first Ex.) according to another form of the support shaft. 
         FIG. 7  is a perspective view showing one example (second Ex.) according to still another form of the support shaft. 
         FIG. 8  is a reduced perspective view of another example (modified example) of the core body as seen from the front, plane and left sides. 
         FIG. 9  is a reduced perspective view of the modified example as seen from the front and plane sides 
         FIG. 10  is a front view of the modified example. 
         FIG. 11  is a plan view of the modified example. 
         FIG. 12  is a bottom view of the modified example. 
         FIG. 13  is a right side view of the modified example. 
         FIG. 14  is a left side view of the modified example. 
         FIG. 15  is an enlarged cross sectional view of the modified example taken along a line XV-XV in  FIG. 10 . 
         FIG. 16  is an enlarged cross sectional view of the modified example taken along a line XVI-XVI in  FIG. 10 . 
         FIG. 17  is a cross sectional view of the modified example along a line XVII-XVII in  FIG. 10 . 
         FIG. 18  is an enlarged end face view of the modified example taken along a line XVIII-XVIII in  FIG. 11 . 
         FIG. 19  is a perspective view showing the core body of the modified example in conjunction with the support shaft and the packing material in a roll shape. 
     
    
    
     DESCRIPTION OF THE INVENTION 
     The present invention will be described by way of one embodiment of a combination of a wound body  6  and a medicine packing apparatus  1 . In the following description, a “proximal end side” corresponds to a left side in  FIG. 2 , and a “distal end side” corresponds to a right side in  FIG. 2 . Further, in the following description, an “axial direction” is an axial direction of a support shaft  31 . Regarding reference numerals allocated to the respective constitutional elements, the same reference numerals are sometimes used for the elements described in different terminologies by taking the functions of those elements into account. The same reference numerals are also allocated for a plurality of constitutional elements having the same shape. 
     Wound Body 
     As shown in  FIG. 1 , the wound body  6  is formed by winding a packing material  62  in a roll shape. The wound body  6  includes a core body  61  and the packing material  62 . The core body  61  has a cylindrical shape. Examples of the material of the core body  61  include a hard resin. The packing material  62  has a strip shape. In other words, the packing material  62  has an elongated sheet shape. The packing material  62  includes a base material and a heat welding layer so as to be capable of bonding by heat seal. Examples of the base material include glassine paper and cellophane paper. The heat welding layer is formed on the base material. Examples of the material of the heat welding layer include polyethylene. The packing material  62  is wound around the outer periphery of the core body  62 . In this embodiment, the packing material  62  is wound around the outer periphery of the core body  61  while being folded in half along a center in a width direction (short side direction) to have the heat welding layer located inside. 
     Medicine Packing Apparatus 
     As shown in  FIG. 1 , the medicine packing apparatus  1  is configured to pack a medicine using the packing material  62 . Examples of the medicine include tablets and powders. The medicine packing apparatus  1  includes the support shaft  31  for supporting the wound body  6 . In  FIG. 1 , the support shaft  31  is omitted. The medicine packing apparatus  1  packs a medicine using the packing material  62  wound off from the wound body  6  supported by the support shaft  31 . 
     The medicine packing apparatus  1  includes a packing section  2  at which the medicine packing is performed. The packing section  2  includes a packing material supply section  3 , a packing material conveyance section  4 , and a packing body forming section  5 . The packing material supply section  3  supplies the packing material  62 . The packing material conveyance section  4  conveys the packing material  62  supplied by the packing material supply section  3 . The packing body forming section  5  forms a packing body with a medicine packed therein using the packing material  62  conveyed by the packing material conveyance section  4 . The packing material  62  is conveyed along its longitudinal direction (direction represented by an arrow F in  FIG. 2 ). The packing material supply section  3 , the packing material conveyance section  4 , and the packing body forming part  5  are located in this order from the upstream side to the downstream side in the conveyance direction of the packing material  62  in the packing section  2 . 
     Packing Material Supply Section 
     The packing material supply section  3  is a part for feeding the packing material  62  to the packing material conveyance section  4  and its downstream side. The wound body  6  is arranged in the packing material supply section  3  to be rotatable in the circumferential direction. The packing material  62  is drawn out in the longitudinal direction from the wound body  6  by the rotation of the wound body  6 . 
     Packing Material Conveyance Section 
     The packing material conveyance section  4  conveys the packing material  62  in the longitudinal direction and supplies the same to the packing body forming part  5  on downstream side. The packing material conveyance section  4  mainly includes a tension adjustment mechanism  41  and a folding bar  42 . The tension adjustment mechanism  41  is configured to adjust the tension of the packing material  62  by stretching the packing material  62  among rollers  411  to  413 , an inter-axial distance of which is changeable, so as to allow the packing material  62  to be bent backward. The tension adjustment mechanism  41  of this embodiment is formed by the combination of two fixed rollers  411  and  412  with their axial positions immovable and one dancer roller  413  with its axial position movable so as to be curved relative to the mounting base. The folding bar  42  changes the conveyance direction of the packing material  62  conveyed upward from the tension adjustment mechanism  41  to an obliquely downward direction. The packing material conveyance section  4  can include a printing part  43  for printing, for example the medicine prescription information on the surface of the packing material  62 . 
     Packing Body Forming Part 
     The packing body forming section  5  is a part for supplying each dose of the medicine to the packing material  62  according to the prescription allow it to be packed individually by bonding the packing material  62 . The packing body forming section  5  mainly includes a triangular plate  51 , a hopper  52 , and a packing material bonding part  53 . The triangular plate  51  is a part that is located downstream side of the hopper  52  in the conveyance direction and is configured to push open the packing material  62  in a state of being folded in half in the width direction so as to separate one side and the other side of the packing material  62  away from each other to allow the packing material  62  to have a V-shaped cross section as seen in the longitudinal direction. The hopper  52  has an upper part  521  and a lower part  522  that has a horizontally cross sectional area reduced compared with the upper part  521  and that is configured to be partly inserted into a space  62 S having the V-shaped cross section which has been push opened by the triangular plate  51  of the packing material  62 . The medicine supplied according to the prescription is supplied on the packing material  62  via the inside of the hopper  52  by a medicine supply mechanism (not shown) disposed above the hopper  52 . The packing material bonding part  53  is a part configured to, for example, heat melt the packing material  62  to section the packing material  62  into individual packs. The packing body forming section  5  can include another part, for example, a perforation forming part (not shown) configured to form perforations in the packing material  62  bonded by the packing material bonding part  53  for ease of cutting. 
     Support Shaft 
     As shown in  FIG. 2 , the support shaft  31  has a columnar shape. The support shaft  31  has, as its part, an outer peripheral part having a cylindrical shape. The wound body  6 , more specifically, the core body  61  of the wound body  6  is mounted on an outer periphery of the outer peripheral part of the support shaft  31  (i.e., outer periphery of the support shaft  31 ). 
     The support shaft  31  is rotatably mounted to the mounting base. In  FIG. 2 , the mounting base is not illustrated while being actually located on the left side. The support shaft  31  is rotatable around a central axis of the outer peripheral part of the support shaft  31  (i.e., central axis of the support shaft  31 ). 
     The support shaft  31  is driven by a driving unit. The driving unit is disposed inside the mounting base. Examples of the driving unit include a stepping motor. The driving unit rotates the support shaft  31  in a first rotation direction and a second rotation direction opposite to the first rotation direction. Rotation of the support shaft  31  in the first direction allows the packing material  62  to be wound off from the wound body  6  supported by the support shaft  31 . Rotation of the support shaft  31  in the second rotation direction allows the packing material  62  to be wound back on the wound body  6 . The driving unit intermittently rotates the support shaft  31  according to the conveyance of the packing material  62  to the packing body forming section  5 . 
     The support shaft  31  is cantilever-supported relative to the mounting base. The support shaft  31  has a proximal end (left part in  FIG. 2 ) and a distal end (right part in  FIG. 2 ). The core body  61  is mounted on the outer periphery of the support shaft  31  from the distal end side of the support shaft  31 . A direction from the distal end of the support shaft  31  toward the proximal end of the support shaft  31  will be hereinafter sometimes referred to as the “mounting direction”, and a direction from the proximal end of the support shaft  31  toward the distal end of the support shaft  31  will be hereinafter sometimes referred to as the “dismounting direction”. 
     The support shaft  31  includes a support shaft main body  31 A and a support shaft distal end body  31 B. The support shaft main body  31 A is a part including the proximal end of the support shaft  31 . The support shaft distal end body  31 B is a part including the distal end of the support shaft  31 . The support shaft distal end body  31 B is provided separately from the support shaft main body  31 A and is mounted to the distal end of the support shaft main body  31 A. The inside of the support shaft main body  31 A is exposed to the outside by dismounting the support shaft distal end body  31 B from the support shaft main body  31 A. Because of this, when a later-described magnetic detecting part or the like is mounted inside the support shaft  31 , a mounting operation and a maintenance operation for such a part can be facilitated. The support shaft distal end body  31 B can be formed integrally with the support shaft main body  31 A. The support shaft distal end body  31 B functions as a mount-assisting part for assisting the operation for mounting the core body  61  to the support shaft main body  31 A. The support shaft distal end body  31 B is used in combination with the wound body  6  of this embodiment. 
     As an alternative configuration based on a different perspective from the aforementioned support shaft main body  31 A and support shaft distal end body  31 B, it can be said that the support shaft  31  includes a main shaft part  311  and a proximal end shaft part  312 . The main shaft part  311  is a part including the distal end of the support shaft  31 . The main shaft part  311  has a constant radial dimension. The proximal end shaft part  312  is located closer to the proximal end of the support shaft  31  than the main shaft part  311 . The proximal end shaft part  312  is a part including the proximal end of the support shaft  31 . The proximal end shaft part  312  has a larger radial dimension than the main shaft part  311 . As shown in  FIG. 2 , a step extending in the circumferential direction is formed between the main shaft part  311  and the proximal end shaft part  312 . 
     The outer peripheral part of the support shaft  31  has at least one first projection  313  (a plurality of projections, specifically four projections in this embodiment), at least one second projection  317  (a plurality of projections, specifically two projections in this embodiment), and at least one third projection  318  (one projection in this embodiment). 
     The first projections  313  are located at the proximal end of the support shaft  31  and project outward in the radial direction of the support shaft  31 . The first projections  313  are disposed on the support shaft main body  31 A. The first projections  313  are disposed on the proximal end shaft part  312 . The first projections  313  located at the proximal end of the support shaft  31  extend in the axial direction of the support shaft  31 . 
     The first projections  313  are arranged with a certain angular distance from each other in the circumferential direction of the support shaft  31 . The first projections  313  are arranged with equal angular distance from each other in the circumferential direction of the support shaft  31 . In this embodiment, four first projections  313  are arranged at intervals of 90° in the circumferential direction of the support shaft  31 . When the support shaft  31  is seen from the proximal end side and the angular position of a first one of the first projections  313  located on the top in  FIG. 2  is designated as an angle of 0° as a reference position in the circumferential direction of the support shaft  31  (this position is also referred as a reference for the angular position regarding the support shaft  31  in the following description), a second one of the first projections  313  (as shown on the front side in  FIG. 2 ) is located at an angle of 90°, a third one of the first projections  313  (not shown in  FIG. 2  because it is located opposite to the first one of the first projections  313  in the radial direction) is located at an angle of 180°, and a fourth one of the first projections  313  (as shown on the back side in  FIG. 2 ) is located at an angle of 270° respectively in the clockwise direction. 
     The second projections  317  are located at the distal end of the support shaft  31  and project outward in the radial direction of the support shaft  31 . The second projections  317  are disposed on the support shaft distal end body  31 B. The second projections  317  are disposed on the main shaft part  311 . The second projections  317  located at the distal end of the support shaft  31  extend in the axial direction of the support shaft  31 . A projecting amount of the second projections  317  projecting outward in the radial direction with respect to the outer peripheral part of the support shaft  31  is smaller than that of the first projections  313 . 
     Each of the second projections  317  has a main body part  3171  and a tapered part  3172 . The main body part  3171  has a constant width (dimension in the circumferential direction of the support shaft  31 ) in the axial direction of the support shaft  31 . The tapered part  3172  is disposed on the distal end side of the support shaft  31  relative to the main body part  3171 . The tapered part  3172  is continuous with the main body part  3171 . The tapered part  3172  has opposite sides in the width direction (circumferential direction of the support shaft  31 ) gradually coming closer to each other as they advance from the proximal end of the support shaft  31  toward the distal end of the support shaft  31 . 
     The second projections  317  are arranged with a certain angular distance from each other in the circumferential direction of the support shaft  31 . The second projections  317  are arranged with equal angular distance from each other in the circumferential direction of the support shaft  31 . In this embodiment, two second projections  317  are arranged at intervals of 180°. Further, in this embodiment, the two second projections  317  are respectively located at the same angular positions as those of two of the four first projections  313  in the circumferential direction of the support shaft  31 . When the support shaft  31  is seen from the proximal end side and the angular position of the first one of the first projections  313  is designated as an angle of 0° in the circumferential direction of the support shaft  31 , first and second ones of the second projections  317  are located respectively at angles of 0° and 180°. 
     The third projection  318  is disposed at an intermediate position between the proximal end of the support shaft  31  and the distal end of the support shaft  31 , and projects outward in the radial direction of the support shaft  31 . The third projection  318  is disposed on the support shaft main body  31 A. The third projection  318  is disposed on the main shaft part  311 . The third projection  318  extends in the axial direction of the support shaft  31  in the intermediate part between the proximal end of the support shaft  31  and the distal end of the support shaft  31 . A projecting amount of the third projection  318  projecting outward in the radial direction with respect to the outer peripheral part of the support shaft  31  is smaller than that of the first projections  313 . The projecting amount of the third projection  318  projecting outward in the radial direction with respect to the outer peripheral part of the support shaft  31  is equal to that of the second projections  317 . The third projection  318  has a width (dimension in the circumferential direction of the support shaft  31 ) is constant in the axial direction of the support shaft  31 . The width of the third projection  318  is equal to the width of the main body part  3171  of each of the second projections  317 . 
     The third projection  318  is located at a certain angular position in the circumferential direction of the support shaft  31 . In this embodiment, the third projection  318  is located at the same angular position as that of one of the two second projections  317 . When the support shaft  31  is seen from the proximal end side and the angular position of the first one of the first projections  313  is designated as an angle of 0°, the third projection  318  is located at an angle of 0°. 
     The support shaft  31  includes at least one retractable part  316  (a plurality of retractable parts, specifically two retractable parts in this embodiment). The retractable parts  316  are located close to the distal end of the support shaft  31 . The retractable parts  316  are disposed in the support shaft distal end body  31 B. The retractable parts  316  can be disposed in the support shaft main body  31 A. The retractable parts  316  are disposed in the main shaft part  311 . 
     The retractable parts  316  are configured to be retractable and extendable relative to the outer peripheral part of the support shaft  31 . The retractable parts  316  have a spherical or hemispherical shape. The retractable parts  316  are positioned inside the support shaft  31 . The outer peripheral part of the support shaft  31  has the same number of circular holes as the number of the retractable parts  316 . The circular holes extend through the outer peripheral part of the support shaft  31  in the radial direction of the support shaft  31 . The retractable parts  316  are configured to partly project outward in the radial direction from the circular holes. Each of the retractable parts  316  is biased outward in the radial direction of the support shaft  31  by a spring not shown in Figures. The spring is disposed inside the support shaft  31 . 
     The retractable parts  316  are arranged with a certain angular distance from each other in the circumferential direction of the support shaft  31 . The retractable parts  316  are arranged with equal angular distance from each other in the circumferential direction of the support shaft  31 . In this embodiment, two retractable parts  316  are arranged at intervals of 180° in the circumferential direction of the support shaft  31 . Further, in this embodiment, the two retractable parts  316  are respectively located at the different angular positions from those of the two second projections  317 . Specifically, the two retractable parts  316  are located at angular positions 90° different respectively from the two second projections  317  in the circumferential direction of the support shaft  31 . The two retractable parts  316  are located at the same angular positions as those of the second one and the fourth one of the first projections  313  in the circumferential direction of the support shaft  31 . When the support shaft  31  is seen from the proximal end side and the angular position of the first one of the first projections  313  is designated as an angle of 0° in the circumferential direction of the support shaft  31 , the first one and the second one of the retractable parts  316  are located at angles of 90° and 270° respectively in the clockwise direction. 
     The support shaft  31  further includes at least one movable part  314  (a plurality of movable parts, specifically two movable parts in this embodiment). The movable parts  314  are located at the proximal end of the support shaft  31 . The movable parts  314  are disposed in the support shaft main body  31 A. The movable parts  314  are disposed in the proximal end shaft part  312 . The movable parts  314  are movable in the axial direction of the support shaft  31 . The movable parts  314  have a rod shape and extend in the radial direction of the support shaft  31 . Each of the movable parts  314  has a leading end that projects outward in the radial direction of the support shaft  31  from the outer peripheral surface of the core body  61  in a state where the core body  61  is mounted on the outer periphery of the support shaft  31 . The movable parts  314  are movable between a retracted position and an advanced position. The advanced position is a position at which each of the movable parts  314  which has advanced from the retracted position in a direction from the proximal end of the support shaft  31  toward the distal end of the support shaft  31  is located. Each of the movable parts  314  is biased in a direction from the proximal end of the support shaft  31  toward the distal end of the support shaft  31  by a spring not shown in Figures. The spring is disposed inside the support shaft  31 . 
     The movable parts  314  are arranged with a certain angular distance from each other in the circumferential direction of the support shaft  31 . The movable parts  314  are arranged with equal angular distance from each other in the circumferential direction of the support shaft  31 . In this embodiment, two movable parts  314  respectively as first and second movable parts  314  are arranged at intervals of 180° in the circumferential direction of the support shaft  31 . Further, in this embodiment, the two movable parts  314  are respectively located at the same angular positions of the second one and the fourth one of the first projections  313  in the circumferential direction of the support shaft  31 . Therefore, the two movable parts  314  project outward in the radial direction from the second one and the fourth one of the first projections  313 . When the support shaft  31  is seen from the proximal end side and the angular position of the first one of the first projections  313  is designated as an angle of 0° in the circumferential direction of the support shaft  31 , the first and second movable parts  314  are located respectively at angles of 90° and 270°. 
     The first movable part  314  is located at the second one of the first projections  313  that is located at an angle of 90° relative to the first one of the first projections  313  (angular position of 0°). A first long hole  315  which acts as a cutout extending in the axial direction of the support shaft  31  is formed in a radial outer surface of the second one of the first projections  313 . The first long hole  315  extends through the second one of the first projections  313  in the radial direction of the support shaft  31 . The first movable part  314  extends through the first long hole  315  to allow a part of it including its leading end to project outward from the first long hole  315  in the radial direction of the support shaft  31 . 
     On the other hand, the second movable part  314  is disposed at the fourth one of the first projections  313  that is located at an angle of 270° relative to the first one of the first projections  313  (angular position of 0°). A second long hole  315  (not shown) which acts as a cutout extending in the axial direction of the support shaft  31  is formed in a radial outer surface of the fourth one of the first projections  313 . The second long hole  315  extends through the fourth one of the first projections  313  in the radial direction of the support shaft  31 . The second movable part  314  extends through the second long hole  315  to allow a part of it including its leading end to project outward from the second long hole  315  in the radial direction of the support shaft  31 . 
     Core Body 
     As shown in  FIG. 2  and  FIG. 3 , the core body  61  has a cylindrical shape. The core body  61  has, as its parts, an outer peripheral part having a cylindrical shape that is an outside area in the radial direction, and an inner peripheral part (not shown) having a cylindrical shape that is an inside area in the radial direction. The core body  61  has one end (left end in  FIG. 2  and  FIG. 3 ) and an other end (right end in  FIG. 2  and  FIG. 3 ). The core body  61  is formed basically symmetrically based on a virtual plane that is positioned at the center in an axial direction parallel to a central axis of the core body  61  and that is orthogonal to the central axis. That is, the shape of the core body  61  on the one end side and the shape of the core body  61  on the other end side have a mirror image relationship. The thus configured core body  61  can be mounted on the outer periphery of the support shaft  31  from any of the one end side and the other end side of the core body  61 . 
     The core body  61  has an outer diameter constant in the axial direction of the core body  61 . No step is formed on the outer periphery of the outer peripheral part of the core body  61 . Therefore, the packing material  62  which has been wound around the outer periphery of the core body  61  is prevented from generating level difference marks. 
     Formed in the inner peripheral part of the core body  61  are at least one one-end-side first recess part  6151  (a plurality of recesses, specifically four recesses in this embodiment), at least one other-end-side first recess part  6152  (a plurality of recesses, specifically four recesses in this embodiment), and at least one second recess part  616  (a plurality of recesses, specifically two recesses in this embodiment). The one-end-side first recess parts  6151  and the other-end-side first recess parts  6152  function as first recess parts  615 . 
     The number of the one-end-side first recess parts  6151  is equal to the number of the first projections  313  of the support shaft  31 . The number of the one-end-side first recess parts  6151  can be larger than the number of the first projections  313  of the support shaft  31 . The number of the other-end-side catch recess parts  6152  is equal to the number of the first projections  313  of the support shaft  31 . The number of the other-end-side catch recess parts  6152  can be larger than the number of the first projections  313  of the support shaft  31 . The number of the second recess parts  616  is equal to the number of the second projections  317  of the support shaft  31 . The number of the second recess parts  616  can be larger than the number of the second projections  317  of the support shaft  31 . 
     The one-end-side first recess parts  6151  respectively engage the first projections  313  of the support shaft  31  when the core body  61  has been mounted on the outer periphery of the support shaft  31  from the one end side of the core body  61 . The one-end-side first recess parts  6151  are located at the one end of the core body  61  and recess outward in the radial direction of the core body  61 . 
     The one-end-side first recess parts  6151  are arranged with a certain angular distance from each other in the circumferential direction of the core body  61 . The one-end-side first recess parts  6151  are arranged with equal angular distance from each other in the circumferential direction of the core body  61 . In this embodiment, four one-end-side first recess parts  6151  are arranged at intervals of 90° in the circumferential direction of the core body  61 . When the core body  61  is seen from the one end side and the angular position of a first one of the one-end-side first recess parts  6151  is designated as an angle of 0° as a reference position in the circumferential direction of the core body  61  (this position is also referred as a reference for the angular position regarding the core body  61  in the following description), second to fourth ones of the one-end-side first recess parts  6151  are located at angles of 90°, 180°, and 270° respectively in the clockwise direction. The relationship of these angular positions is the same as the relationship of the angular positions of the four first projections  313  of the support shaft  31 . 
     The one-end-side first recess parts  6151  are located at the one end of the core body  61  and extend in the axial direction of the core body  61 . Each of the one-end-side first recess parts  6151  has an end that is located at the one end of the core body  61 , more specifically at a position displaced from an end face of the one end of the core body  61  (hereinafter referred to as “one end face”) toward the other end of the core body  61 . The one-end-side first recess parts  6151  extend to the one end face of the core body  61  and open at the one end face of the core body  61 . Each of the one-end-side first recess parts  6151  expands toward both sides in the circumferential direction of the core body  61  as it advances toward the one end face of the core body  61  in the proximity of the one end face of the core body  61 . 
     The other-end-side first recess parts  6152  engage the first projections  313  of the support shaft  31  when the core body  61  has been mounted on the outer periphery of the support shaft  31  from the other end side of the core body  61 . The other-end-side first recess parts  6152  are located at the other end of the core body  61  and recess outward in the radial direction of the core body  61 . 
     The other-end-side first recess parts  6152  are arranged with a certain angular distance from each other in the circumferential direction of the core body  61 . The other-end-side first recess parts  6152  are arranged with equal angular distance from each other in the circumferential direction of the core body  61 . In this embodiment, four other-end-side first recess parts  6152  are arranged at intervals of 90° in the circumferential direction of the core body  61 . Further, in this embodiment, the four other-end-side first recess parts  6152  are respectively located at the same angular positions as those of the four one-end-side first recess parts  6151  in the circumferential direction of the core body  61 . When the core body  61  is seen from the one end side and the angular position of the first one of the one-end-side first recess parts  6151  is designated as an angle of 0° in the circumferential direction of the core body  61 , first to fourth ones of the other-end-side first recess parts  6152  are located respectively at angles of 0°, 90°, 180°, and 270° respectively in the clockwise direction. The relationship of these angular positions is the same as the relationship of the angular positions of the four first projections  313  of the support shaft  31  in the same manner as the one-end-side first recess parts  6151 . 
     The other-end-side first recess parts  6152  are located at the other end of the core body  61  and extend in the axial direction of the core body  61 . Each of the other-end-side first recess parts  6152  has an end that is located at the other end of the core body  61 , more specifically at a position displaced from an end face of the other end of the core body  61  (hereinafter referred to as “other end face”) toward the one end of the core body  61 . The other-end-side first recess parts  6152  extend to the other end face of the core body  61  and open at the other end face of the core body  61 . Each of the other-end-side first recess parts  6152  expands toward both sides in the circumferential direction of the core body  61  as it advances toward the other end face of the core body  61  in the proximity of the other end face of the core body  61 . 
     The second recess parts  616  engage the second projections  317  of the support shaft  31  when the core body  61  is mounted on the outer periphery of the support shaft  31 . The second recess parts  616  are located to extend from the one end of the core body  61  to the other end of the core body  61  and recess outward in the radial direction of the core body  61 . The recessing amount of the second recess parts  616  recessing outward in the radial direction of the core body  61  with respect to the inner peripheral part (specifically, the inner peripheral surface of the core body  61 ) is smaller than that of the one-end-side first recess parts  6151  and the other-end-side first recess parts  6152 . Thus, it is possible to prevent lowering of the strength of the core body  61  due to the formation of the second recess parts  616 . 
     The second recess parts  616  are arranged with a certain angular distance from each other in the circumferential direction of the core body  61 . The second recess parts  616  are arranged with equal angular distance from each other in the circumferential direction of the core body  61 . In this embodiment, two second recess parts  616  are arranged at intervals of 180° in the circumferential direction of the core body  61 . Further, in this embodiment, the two second recess parts  616  are respectively located at the same angular positions as those of two of the four one-end-side first recess parts  6151  in the circumferential direction of the core body  61 . When the core body  61  is seen from the one end side and the angular position of the first one of the one-end-side first recess parts  6151  is designated as an angle of 0° in the circumferential direction of the core body  61 , first to second ones of the second recess parts  616  are located respectively at angles of 0° and 180°. The relationship of these angular positions is the same as the relationship of the angular positions of the two second projections  317  of the support shaft  31 . 
     The second recess parts  616  extend between the one end of the core body  61  and the other end of the core body  61  in the axial direction. The second recess parts  616  extend to the one end face of the core body  61  and open at the one end face of the core body  61 . The second recess parts  616  are continuous with each other in the circumferential direction of the core body  61  at the one end of the core body  61 . That is, the second recess parts  616  are formed along the entire circumference of the core body  61  at the one end of the core body  61 . The second recess parts  616  extend to the other end face of the core body  61  and open at the other end face of the core body  61 . The second recess parts  616  are continuous with each other in the circumferential direction of the core body  61 . That is, the second recess parts  616  are formed along the entire circumference of the core body  61  at the other end of the core body  61 . 
     As shown in  FIG. 3 , each of the second recess parts  616  includes an one-end-side leading part  6162 , an other-end-side leading part  6163 , and a guide part  6161 . 
     The one-end-side leading part  6162  is configured to lead the second projection  317  when the core body  61  is mounted on the outer periphery of the support shaft  31  from the one end side of the core body  61 . The one-end-side leading part  6162  is located close to the one end of the core body  61 . The one-end-side leading part  6162  is located closer to the one end of the core body  61  than the width center of the core body  61 . The one-end-side leading part  6162  has a width parallel to the circumferential direction of the core body  61 , which gradually reduces as it advances from the one end of the core body  61  toward the other end of the core body  61 . The one-end-side leading part  6162  has opposite sides in the circumferential direction of the core body  61 , which come closer to each other as they advance from the one end of the core body  61  toward the other end of the core body  61 . 
     The other-end-side leading part  6163  is configured to lead the second projection  317  when the core body  61  is mounted on the outer periphery of the support shaft  31  from the other end side of the core body  61 . The other-end-side leading part  6163  is located close to the other end of the core body  61 . The other-end-side leading part  6163  is located closer to the other end of the core body  61  than the width center of the core body  61 . The other-end-side leading part  6163  has a width parallel to the circumferential direction of the core body  61 , which gradually reduces as it advances from the other end of the core body  61  toward the one end of the core body  61 . The other-end-side leading part  6163  has opposite sides in the circumferential direction of the core body  61 , which come closer to each other as they advance from the other end of the core body  61  toward the one end of the core body  61 . 
     The guide part  6161  is configured to guide the second projection  317  when the core body  61  is mounted on the outer periphery of the support shaft  31 . The guide part  6161  is located between the one-end-side leading part  6162  and the other-end-side leading part  6163 . In this embodiment, the guide part  6161  is located at the width center of the core body  61 . The guide part  6161  is located closer to the other end of the core body  61  than the one-end-side leading part  6162 . The guide part  6161  is continuous with the one-end-side leading part  6162 . The guide part  6161  is located closer to the one side of the core body  61  than the other-end-side leading part  6163 . The guide part  6161  is continuous with the other-end-side leading part  6163 . 
     The guide part  6161  has a constant width (dimension in the circumferential direction of the core body  61 ) in the axial direction of the core body  61 . The width of the guide part  6161  is substantially equal to the width of the second projections  317  of the support shaft  31  (dimension in the circumferential direction of the support shaft  31 ), specifically to the width of the main body part  3171  of the second projections  317 . The width of the guide part  6161  is slightly larger than the width of the second projection  317  to the extent which allows the second projection  317  to move through the guide part  6161  in the axial direction of the core body  61 . 
     It can be said that each of the second recess parts  616  has a free area, a transition area, and a limitation area. In each of the second recess parts  616 , an area corresponding in position the one end of the core body  61  and an area corresponding in position the other end of the core body  61  are free areas. The free areas permit rotation of the core body  61  relative to the support shaft  31  without limitation. The areas of the one-end-side leading part  6162  and the other-end-side leading part  6163  are transition areas. Each of the transition areas is configured such that the range within which the core body  61  is rotatable becomes small toward the center in the axial direction of the core body  61 . The area of the guide part  6161  is a limitation area. In the limitation area, limitation is applied so that the core body  61  cannot substantially rotate. 
     The inner peripheral part of the core body  61  includes at least one inner peripheral surface part  617  (a plurality of parts, specifically two parts in this embodiment). Each of the inner peripheral surface parts  617  forms an inner peripheral surface of the core body  61 . Each of the inner peripheral surface parts  617  is located between the one end of the core body  61  and the other end of the core body  61 . Each of the inner peripheral surface parts  617  is located to be surrounded by the second recess part  616  in the circumferential direction. 
     The inner peripheral surface parts  617  are arranged with a certain angular distance from each other in the circumferential direction of the core body  61 . The inner peripheral surface parts  617  are arranged with equal angular distance from each other in the circumferential direction of the core body  61 . In this embodiment, two inner peripheral surface parts  617  are arranged at intervals of 180° in the circumferential direction of the core body  61 . Further, in this embodiment, the two inner peripheral surface parts  617  are located at angular positions displaced 90° from the corresponding two second recess parts  616  in the circumferential direction of the core body  61 . When the core body  61  is seen from the one end side of the core body  61  and the angular position of a first one of the one-end-side first recess parts  6151  is designated as an angle of 0° in the circumferential direction of the core body  61 , the first and second ones of the inner peripheral surface parts  617  are located at angles of 90° and 270° respectively in the clockwise direction. 
     Each of the inner peripheral surface parts  617  is located at a middle position between the one end of the core body  61  and the other end of the core body  61  and extends in the axial direction. However, each of the inner peripheral surface parts  617  does not reach the one end face of the core body  61 . The one end of the first one of the inner peripheral surface parts  617  is continuous with the end of the second one of the one-end-side first recess parts  6151 . The one end of the second one of the inner peripheral surface parts  617  is continuous with the end of the fourth one of the one-end-side first recess parts  6151 . Each of the inner peripheral surface parts  617  does not reach the other end face of the core body  61 . The other end of the first one of the inner peripheral surface parts  617  is continuous with the end of the second one of the other-end-side first recess parts  6152 . The other end of the second one of the inner peripheral surface parts  617  is continuous with the end of the fourth one of the other-end-side first recess parts  6152 . 
     The inner peripheral surface parts  617  have a shape corresponding to the shape of the second recess parts  616 . Apart of each of the inner peripheral surface parts  617  which is close to the one end expands toward both sides in the circumferential direction of the core body  61  as it advances from the one end of the core body  61  toward the other end of the core body  61  so as to correspond to the shape of each of the one-end-side leading parts  6162 . A part of each of the inner peripheral surface parts  617  which is close to the other end expands toward both sides in the circumferential direction of the core body  61  as it advances from the other end of the core body  61  toward the one end of the core body  61 . The center part in the axial direction of each of the inner peripheral surface parts  617  has a width (dimension in the circumferential direction of the core body  61 ) constant in the axial direction of the core body  61 . 
     It can be said that the core body  61  has small thickness parts  618  and large thickness parts  619 . The small thickness parts  618  correspond to the second recess parts  616 . The large thickness parts  619  have a thickness larger than the small thickness parts  618 . The large thickness parts  619  correspond to the inner peripheral surface parts  617 . 
     The inner peripheral part of the core body  61  further has at least one first catch recess part  6152 A (a plurality of recesses, specifically two recesses in this embodiment), and at least one second catch recess part  6151 A (a plurality of recesses, specifically two recesses in this embodiment). 
     The retractable parts  316  are caught by the first catch recess parts  6152 A when the core body  61  has been mounted on the outer periphery of the support shaft  31  from the one end side of the core body  61 . The first catch recess parts  6152 A are located close to the other end of the core body  61  and recess outward in the radial direction of the core body  61 . Each of the first catch recess parts  6152 A has a step part  615   a  facing the other end side of the core body  61 . 
     The first catch recess parts  6152 A are arranged with a certain angular distance from each other in the circumferential direction of the core body  61 . The first catch recess parts  6152 A are arranged with equal angular distance from each other in the circumferential direction of the core body  61 . In this embodiment, two first catch recess parts  6152 A are arranged at intervals of 180° in the circumferential direction of the core body  61 . Further, in this embodiment, the two first catch recess parts  6152 A are located, as first and second ones of the first catch recess parts  6152 A, respectively at the same angular positions as those of the two inner peripheral surface parts  617 . When the core body  61  is seen from the one end side of the core body  61  and the angular position of the first one of the one-end-side first recess parts  6151  is designated as an angle of 0° in the circumferential direction of the core body  61 , the first and second first catch recess parts  6152 A are located at angles of 90° and 270° respectively in the clockwise direction. 
     The first one of the first catch recess parts  6152 A is formed integrally with the second one of the other-end-side first recess parts  6152 . That is, these recesses are formed as an integrated recess in this embodiment. The first one of the first catch recess parts  6152 A can be formed separately from the second one of the other-end-side first recess parts  6152 . For example, the first one of the first catch recess parts  6152 A can be located closer to the center part in the axial direction of the core body  61  than the second one of the other-end-side first recess parts  6152 . 
     The second one of the first catch recess parts  6152 A is formed integrally with the fourth one of the other-end-side first recess parts  6152 . That is, these recesses are formed as an integrated recess in this embodiment. The second one of the first catch recess parts  6152 A can be formed separately from the fourth one of the other-end-side first recess parts  6152 . For example, the second one of the first catch recess parts  6152 A can be located closer to the center part in the axial direction of the core body  61  than the fourth one of the other-end-side first recess parts  6152 . 
     The retractable parts  316  are caught by the second catch recess parts  6151 A when the core body  61  has been mounted on the outer periphery of the support shaft  31  from the other end side of the core body  61 . The second catch recess parts  6151 A are located close to the one end of the core body  61  and recess outward in the radial direction of the core body  61 . Each of the second catch recess parts  6151 A has a step part  615   a  facing the one end side of the core body  61 . 
     The second catch recess parts  6151 A are arranged with a certain angular distance from each other in the circumferential direction of the core body  61 . The second catch recess parts  6151 A are arranged with equal angular distance from each other in the circumferential direction of the core body  61 . In this embodiment, two second catch recess parts  6151 A are arranged at intervals of 180° in the circumferential direction of the core body  61 . Further, in this embodiment, the two second catch recess parts  6151 A are located, as first and second ones of the second catch recess parts  6151 A, respectively at the same angular positions as those of the two inner peripheral surface parts  617 . When the core body  61  is seen from the one end side of the core body  61  and the angular position of the first one of the one-end-side first recess parts  6151  is designated as an angle of 0° in the circumferential direction of the core body  61 , the first and second ones of the second catch recess parts  6151 A are located at angles of 90° and 270° respectively in the clockwise direction. 
     The first one of the second catch recess parts  6151 A is formed integrally with the second one of the one-end-side first recess parts  6151 . That is, these recesses are formed as an integrated recess in this embodiment. The first one of the second catch recess parts  6151 A can be formed separately from the second one of the one-end-side first recess parts  6151 . For example, the first one of the second catch recess parts  6151 A can be located closer to the center part in the axial direction of the core body  61  than the second one of the one-end-side first recess parts  6151 . 
     The second one of the second catch recess parts  6151 A is formed integrally with the fourth one of the one-end-side first recess parts  6151 . That is, these recesses are formed as an integrated recess in this embodiment. The second one of the second catch recess parts  6151 A can be formed separately from the fourth one of the one-end-side first recess parts  6151 . For example, the second one of the second catch recess parts  6151 A can be located closer to the center part in the axial direction of the core body  61  than the fourth one of the one-end-side first recess parts  6151 . 
     The core body  61  has at least one one-end-side cutout  6111  (a plurality of cutouts, specifically four cutouts in this embodiment) and at least one other-end-side cutout  6112  (a plurality of cutouts, specifically four cutouts in this embodiment). The one-end-side cutouts  6111  and the other-end-side cutouts  6112  function as cutouts  611 . 
     The movable parts  314  can enter the one-end-side cutouts  6111  from the one end side of the core body  61 . The one-end-side cutouts  6111  are located at the one end of the core body  61 , and cut out from the one end face of the core body  61  toward the other end of the core body  61 . The one-end-side cutouts  6111  extend through the core body  61  in the radial direction of the core body  61 . The one-end-side cutouts  6111  are located at the one end of the core body  61  and extend in the axial direction of the core body  61 . 
     The one-end-side cutouts  6111  are arranged with a certain angular distance from each other in the circumferential direction of the core body  61 . The one-end-side cutouts  6111  are arranged with equal angular distance from each other in the circumferential direction of the core body  61 . In this embodiment, four one-end-side cutouts  6111  are arranged at intervals of 90° in the circumferential direction of the core body  61 . Further, in this embodiment, the four one-end-side cutouts  6111  are located respectively at the same angular positions as those of the four one-end-side first recess parts  6151  in the circumferential direction of the core body  61 . When the core body  61  is seen from the one end side of the core body  61  and the angular position of the first one of the one-end-side first recess parts  6151  is designated as an angle of 0° in the circumferential direction of the core body  61 , the first to fourth ones of the one-end-side cutouts  6111  are located at angles of 0°, 90°, 180°, and 270° respectively in the clockwise direction. The relationship of these angular positions is the same as the relationship of the angular positions of the four first projections  313  of the support shaft  31 . The first and third ones of the one-end-side cutouts  6111  may be eliminated as long as the second and fourth ones of the one-end-side cutouts  6111  are provided. 
     The movable parts  314  can enter the other-end-side cutouts  6112  from the other end side of the core body  61 . The other-end-side cutouts  6112  are located at the other end of the core body  61 , and cut out from the other end face of the core body  61  toward the one end of the core body  61 . The other-end-side cutouts  6112  extend through the core body  61  in the radial direction of the core body  61 . The other-end-side cutouts  6112  are located at the other end of the core body  61  and extend in the axial direction of the core body  61 . 
     The other-end-side cutouts  6112  are arranged with a certain angular distance from each other in the circumferential direction of the core body  61 . The other-end-side cutouts  6112  are arranged with equal distance from each other in the circumferential direction of the core body  61 . In this embodiment, four other-end-side cutouts  6112  are arranged at intervals of 90° in the circumferential direction of the core body  61 . Further, in this embodiment, the four other-end-side cutouts  6112  are respectively located at the same angular positions as those of the four other-end-side first recess parts  6152  in the circumferential direction of the core body  61 . When the core body  61  is seen from the one end side of the core body  61  and the angular position of the first one of the one-end-side first recess parts  6151  is designated as an angle of 0° in the circumferential direction of the core body  61 , the first to fourth ones of the other-end-side cutouts  6112  are located at angles of 0°, 90°, 180°, and 270° respectively in the clockwise direction. The relationship of these angular positions is the same as the relationship of the angular positions of the four first projections  313  of the support shaft  31 . The first and third ones of the other-end-side cutouts  6112  may be eliminated as long as the second and fourth ones of the other-end-side cutouts  6112  are provided. 
     The core body  61  includes at least one one-end-side magnet  6131  (a plurality of magnets, specifically two magnets in this embodiment), and at least one other-end-side magnet  6132  (a plurality of magnets, specifically two magnets in this embodiment). The one-end-side magnets  6131  and the other-end-side magnets  6132  function as magnets  613 . 
     The one-end-side magnets  6131  are located at the one end of the core body  61 . The one-end-side magnets  6131  are located according to a first positional relationship in the circumferential direction of the core body  61 . The one-end-side magnets  6131  are located with a certain angular distance from each other in the circumferential direction of the core body  61 . In this embodiment, two one-end-side magnets  6131  are arranged at intervals of 90° in the circumferential direction of the core body  61 . Further, in this embodiment, the two one-end-side magnets  6131  are located respectively at angular positions different from those of the four one-end-side first recess parts  6151  in the circumferential direction of the core body  61 . When the core body  61  is seen from the one end side of the core body  61  and the angular position of the first one of the one-end-side first recess parts  6151  is designated as an angle of 0° in the circumferential direction of the core body  61 , first and second ones of the one-end-side magnets  6131  are located at angles of 45° and 135° respectively in the clockwise direction. 
     One-end-side retention parts  6141  are formed at the one end of the core body  61  in the same number as the one-end-side magnets  6131 . The One-end-side retention parts  6141  function as magnet retention parts  614  for retaining the magnets  613 . The one-end-side retention parts  6141  respectively retain the one-end-side magnets  6131 . The one-end-side retaining parts  6141  recess inward from the outer peripheral part of the core body  61  in the radial direction of the core body  61 . Each of the one-end-side magnets  6131  is fitted in each of the one-end-side retention parts  6141 , and a seal member (not shown) is attached thereto. The number of the one-end-side retention parts  6141  can be larger than the number of the one-end-side magnets  6131 . In this case, the one-end-side magnets  6131  are fitted in selected ones of the one-end-side retention parts  6141 . 
     The other-end-side magnets  6132  are located at the other end of the core body  61 . The other-end-side magnets  6132  are located according to a second positional relationship different from the first positional relationship in the circumferential direction of the core body  61 . The other-end-side magnets  6132  are located with a certain angular distance from each other in the circumferential direction of the core body  61 . In this embodiment, two other-end-side magnets  6132  are arranged at intervals of 180° in the circumferential direction of the core body  61 . Further, in this embodiment, the two one-end-side magnets  6131  are located respectively at angular positions different from those of the four other-end-side first recess parts  6152 . When the core body  61  is seen from the one end side of the core body  61  and the angular position of the first one of the one-end-side first recess parts  6151  is designated as an angle of 0° in the circumferential direction of the core body  61 , first and second ones of the other-end-side magnets  6132  are located at angles of 45° and 225° respectively in the clockwise direction. 
     Other-end-side retention parts  6142  are formed at the other end of the core body  61  in the same number as the other-end-side magnets  6132 . The other-end-side retention parts  6142  function as the magnet retention parts  614  for retaining the magnets  613 . The other-end-side retention parts  6142  respectively retain the other-end-side magnets  6132 . The other-end-side retention parts  6142  recess inward from the outer peripheral part of the core body  61  in the radial direction of the core body  61 . Each of the other-end-side magnets  6132  is fitted in each of the other-end-side retention parts  6142 , and a seal member (not shown) is attached thereto. The number of the other-end-side retention parts  6142  can be larger than the number of the other-end-side magnets  6132 . In this case, the other-end-side magnets  6132  are fitted in selected ones of the other-end-side retention parts  6142 . 
     Combination of a Wound Body and a Medicine Packing Apparatus 
     As shown in  FIG. 4 , the core body  61  is mounted on the outer periphery of the support shaft  31 . In the state where the core body  61  is mounted on the outer periphery of the core body  61 , the support shaft  31  partially projects from the core body  61 . Specifically, the distal end of the support shaft  31  projects from the core body  61 . The support shaft  31  may not project from the core body  61  in the state where the core body  61  is mounted on the outer periphery of the support shaft  31 . 
     In the wound body  6 , the packing material  62  is wound around the outer periphery of the core body  61  as described above. In  FIG. 4 , the packing material  62  is omitted. In this embodiment, the packing material  62  is classified into two types based on the sealing temperature. The packing material  62  of a first type is heat-sealed at a first sealing temperature. The packing material  62  of a second type is heat-sealed at a second sealing temperature different from the first sealing temperature. 
     In this embodiment, the core body  61  is of a single type that is configured to be able to handle the packing material  62  of the two different types. In this embodiment, the orienting direction of the core body  61  relative to the packing material  62  is selected according to the type of the packing material  62 . When the packing material  62  of the first type is wound around the core body  61 , the orienting direction of the core body  61  relative to the packing material  62  is selected so as to have a fold line of the packing material  62  located on the one end side of the core body  61 . Hereinafter, the wound body  6  formed by winding the packing material  62  of the first type in a roll shape will be sometimes referred to as a first wound body  6 . When the packing material  62  of the second type is wound around the core body  61 , the orienting direction of the core body  61  relative to the packing material  62  is selected to have a fold line of the packing material  62  located on the other end side of the core body  61 . Hereinafter, the wound body  6  formed by winding the packing material  62  of the second type in a roll shape will be sometimes referred to as a second wound body  6 . 
     When the first wound body  6  is mounted to the support shaft  31 , the core body  61  is mounted on the outer periphery of the support shaft  31  from the one end side of the core body  61 . In this case, the first projections  313  are respectively fitted in the one-end-side first recess parts  6151 . Thereby, the support shaft  31  and the core body  61  are integrally rotatable in the circumferential direction of the support shaft  31 . 
     The core body  61  can be mounted to the support shaft  31  at at least one angular position (a plurality of positions, specifically two positions in this embodiment). Specifically, the core body  61  is mounted to the support shaft  31  at an angular position at which the first one of the one-end-side first recess parts  6151  and the first one of the first projections  313  coincide with each other. Or, the core body  61  is mounted to the support shaft  31  at an angular position at which the first one of the one-end-side first recess parts  6151  and the third one of the first projections  313  coincide with each other. 
     In the state where the core body  61  is mounted on the outer periphery of the support shaft  31 , the first projections  313  respectively come into contact with the ends of the one-end-side first recess parts  6151 , while the retractable parts  316  are respectively caught by the first catch recess parts  6152 A, specifically the step parts  615   a  of the first catch recess parts  6152 A. Thus, the core body  61  is prevented from being displaced in the axial direction of the support shaft  31  relative to the outer periphery of the support shaft  31  and thereby the core body  61  can be securely mounted on the outer periphery of the support shaft  31 . The contact of the first projections  313  with the ends of the one-end-side first recess parts  6151  allows for prevention of the displacement of the core body  61  relative to the support shaft  31  in a direction in which the core body  61  is mounted to the support shaft  31 . The catch of the retractable parts  316  by the first catch recess parts  6152 A allows for prevention of the displacement of the core body  61  relative to the support shaft  31  in a direction in which the core body  61  is dismounted from the support shaft  31 . 
     When the second wound body  6  is mounted to the support shaft  31 , the core body  61  is mounted on the outer periphery of the support shaft  31  from the other end side of the core body  61 . In this case, the first projections  313  are respectively fitted in the other-end-side first recess parts  6152 . Thereby, the support shaft  31  and the core body  61  are integrally rotatable in the circumferential direction of the support shaft  31 . 
     The core body  61  can be mounted to the support shaft  31  at at least one angular position (a plurality of positions, specifically two positions in this embodiment). Specifically, the core body  61  is mounted to the support shaft  31  at an angular position at which the first one of the other-end-side first recess parts  6152  and the first one of the first projections  313  coincide with each other. Or, the core body  61  is mounted to the support shaft  31  at an angular position at which the first one of the other-end-side first recess parts  6152  and the third one of the first projections  313  coincide with each other. 
     In the state where the core body  61  is mounted on the outer periphery of the support shaft  31 , the first projections  313  respectively come into contact with the ends of the other-end-side first recess parts  6152 , while the retractable parts  316  are respectively caught by the second catch recess parts  6151 A, specifically the step parts  615   a  of the second catch recess parts  6151 A. Thus, the core body  61  is prevented from being displaced relative to the outer periphery of the support shaft  31  in the axial direction of the support shaft  31  and thereby the core body  61  can be securely mounted on the outer periphery of the support shaft  31 . The contact of the first projections  313  with the ends of the other-end-side first recess parts  6152  allows for prevention of the displacement of the core body  61  relative to the support shaft  31  in a direction in which the core body  61  is mounted to the support shaft  31 . The catch of the retractable parts  316  by the second catch recess parts  6151 A allows for prevention of the displacement of the core body  61  relative to the support shaft  31  in a direction in which the core body  61  is dismounted from the support shaft  31 . 
     The medicine packing apparatus  1  is configured to stop its operation when the movable parts  314  have moved from the retracted position to the advanced position. The positions of the movable parts  314  are detected by a sensor. The medicine packing apparatus  1  is switched between an operative state and an inoperative state on the basis of the detected result of the sensor. The medicine packing apparatus  1  is operable when the movable parts  314  are located at the retracted position. The medicine packing apparatus  1  is inoperable when the movable parts  314  are located at the advanced position. 
     In the state where the wound body  6  is mounted to the support shaft  31 , the movable parts  314  are being pushed by the end face formed by the packing material  62  in a wound state around the wound body  6 . Therefore, the movable parts  314  are located at the retracted position. At this time, the medicine packing apparatus  1  is operable. 
     When the packing material  62  is entirely unwound from the wound body  6 , only the core body  61  is left on the support shaft  31 . The end face formed by the packing material  62  around the wound body  6  is thus eliminated. Accordingly, the movable parts  314  move in a direction from the proximal end of the support shaft  31  toward the distal end of the support shaft  31 . When the first wound body  6  is mounted to the support shaft  31 , the movable parts  314  enter the one-end-side cutouts  6111 . When the second wound body  6  is mounted to the support shaft  31 , the movable parts  314  enter the other-end-side cutouts  6112 . Thus, when the movable parts  314  move from the retracted position to the advanced position, the operation of the medicine packing apparatus  1  is stopped. 
     The medicine packing apparatus  1  is configured to be able to detect the magnetism on at least one of the proximal end side of the support shaft  31  and the distal end side of the support shaft  31  (both sides in this embodiment). A magnetism detection part for detecting the magnetism can be disposed inside the support shaft  31 , or can be disposed outside the support shaft  31 . 
     The medicine packing apparatus  1  having such a configuration detects at least one of the plurality of the one-end-side magnets  6131  and a plurality of the other-end-side magnets  6132  (both the one-end-side magnets and the other-end-side magnets in this embodiment). When the first wound body  6  is mounted to the support shaft  31 , the one-end-side magnets  6131  are detected on the proximal end side of the support shaft  31 , and the other-end-side magnets  6132  are detected on the distal end side of the support shaft  31 . When the second wound body  6  has been mounted to the support shaft  31 , the other-end-side magnets  6132  are detected on the proximal end side of the support shaft  31 , and the one-end-side magnets  6131  are detected on the distal end side of the support shaft  31 . The medicine packing apparatus  1  sets the sealing temperature, at which the packing material  62  is heat sealed, on the basis of the detected result. Accordingly, the medicine packing apparatus  1  can heat seal the packing material  62  at a sealing temperature according to the type of the packing material  62 . 
     Mounting of the Wound Body and Dismounting of the Core Body by an Operator 
     Now, the description will be made for the case where the operator mounts the wound body  6  to the support shaft  31 , and the case where the operator dismounts the core body  61  left on the support shaft  31  from the support shaft  31  after the packing material  62  has been entirely unwound from the wound body  6 . 
     As shown in  FIG. 5 , when the core body  61  is mounted on the outer periphery of the support shaft  31 , the circumferential positions of the support shaft  31  and the core body  61  around the support shaft  31  are aligned with each other. In  FIG. 5 , the second projections  317  and the third projection  318  are shown by two-dot chain line. In  FIG. 5 , the second projections  317  are shown as moving in the axial direction of the core body  61  relative to the core body  61  for ease of understanding. However, the actual configuration is opposite. That is, the core body  61  actually moves in the axial direction of the support shaft  31  relative to the second projections  317  of the support shaft  31 . 
     When the core body  61  is mounted on the outer periphery of the support shaft  31 , the operation may be such that the support shaft  31  is kept unmoved in the circumferential direction while the core body  61  is rotated in the circumferential direction relative to the support shaft  31 , or may be such that the core body  61  is kept unmoved in the circumferential direction while the support shaft  31  is rotated in the circumferential direction relative to the core body  61 . Or, both the support shaft  31  and the core body  61  may be rotated in the circumferential direction. 
     Here, the description will be made for the case where the first wound body  6  is mounted to the support shaft  31  for the alignment of the support shaft  31  and the core body  61 . When the second wound body  6  is mounted to the support shaft  31 , the operation is basically the same as the operation for the case where the first wound body  6  is mounted to the support shaft  31 , except for the orienting direction of the core body  61 . Thus, the description on the case where the second wound body  6  is mounted to the support shaft  31  will be omitted. 
     When the first wound body  6  is mounted to the support shaft  31 , the operator first holds the first wound body  6  and places this first wound body  6  at a position more on the far side of the distal end of the support shaft  31 . The operator directs the one end of the core body  61  toward the support shaft  31 . The operator aligns the central axis of the core body  61  with the central axis of the support shaft  31 . Thereafter, the operator moves the first wound body  6  relative to the support shaft  31  in the mounting direction. 
     When the operator moves the first wound body  6  relative to the support shaft  31  in the mounting direction, the one end of the core body  61  is fitted on the distal end of the support shaft  31 . The second recess parts  616  are formed along the entire circumference of the core body  61  at the one end of the core body  61 . This configuration allows the operator to eliminate the necessity to intentionally align the circumferential positions of the support shaft  31  and the core body  61  around the support shaft  31 . Therefore, the mounting operation of the wound body  6  to the support shaft  31  can be facilitated. 
     A new wound body  6  with an unconsumed packing material  62  wound therearound is heavy. It would be difficult for the operator to perform alignment of the circumferential positions of the support shaft  31  and the core body  61  around the support shaft  31  while holding up the wound body  6 . Therefore, the elimination of the necessity to intentionally align the circumferential positions of the support shaft  31  and the core body  61  around the support shaft  31  produces a significant advantage for the operator. 
     In the course of moving the first wound body  6  in the mounting direction relative to the support shaft  31 , the retractable parts  316  come into contact with the inner peripheral surface parts  617 . However, the retractable parts  316  are pushed inward in the radial direction of the support shaft  31  by the inner peripheral surface parts  617 . Thus, the operator can move the wound body  6  relative to the support shaft  31  in the mounting direction without hindrance. 
     When the operator further moves the first wound body  6  relative to the support shaft  31  in the mounting direction, the second projections  317  enter the one-end-side leading parts  6162 , as shown in  FIG. 5 . Specifically, the first one of the second projections  317  enters the one-end-side leading part  6162  of the first one of the second recess parts  616 , and the second one of the second projections  317  enters the one-end-side leading part  6162  of the second one of the second recess parts  616 . Or, the first one of the second projections  317  enters the one-end-side leading part  6162  of the second one of the second recess parts  616 , and the second one of the second projections  317  enters the one-end-side leading part  6162  of the first one of the second recess parts  616 . Whether each of the second projections  317  enters the one-end-side leading part  6162  of the first one or the second one of the second recess parts is determined according to the positional relationship between the support shaft  31  and the core body  61 . 
     When the operator further moves the first wound body  6  relative to the support shaft  31  in the mounting direction, the second projections  317  are led to the one-end-side leading parts  6162 , as shown in  FIG. 5 . The one-end-side leading parts  6162  are configured to lead the second projections  317  to allow the circumferential positions of the first projections  313  and the one-end-side first recess parts  6151  around the support shaft  31  to be aligned with each other. Accordingly, the operator is not required to carry out any operations other than moving the wound body  6  relative to the support shaft  31  in the mounting direction. The operator can eliminate the necessity to intentionally align the circumferential position of the support shaft  31  with the circumferential position of the core body  61  around the support shaft  31 . Thus, the mounting operation of the wound body  6  to the support shaft  31  can be facilitated. 
     When the operator further moves the first wound body  6  relative to the support shaft  31  in the mounting direction, the second projections  317  enter the guide parts  6161  and are guided to the guide parts  6161 . The guide parts  6161  guide the second projections  317  so as to allow the circumferential positions of the first projections  313  and the one-end-side first recess parts  6151  around the support shaft  31  to be kept in alignment with each other. Accordingly, the operator is not required to carry out any operations other than moving the wound body  6  relative to the support shaft  31  in the mounting direction. The operator can eliminate the necessity to intentionally align the circumferential position of the support shaft  31  with the circumferential position of the core body  61  around the support shaft  31 . Thus, the mounting operation of the wound body  6  to the support shaft  31  can be facilitated. 
     When the operator further moves the first wound body  6  relative to the support shaft  31  in the mounting direction, the third projection  318  enters either one of the guide parts  6161  and is guided to either one of the guide parts  6161 . When the first one of the second projections  317  has been guided to the first one of the guide parts  6161 , the third projection  318  is subsequently guided to this first one of the guide parts  6161 . When the first one of the second projections  317  is guided to the second one of the guide parts  6161 , the third projection  318  is guided to this second one of the guide parts  6161 . The third projection  318  is guided to either one of the guide parts  6161  so as to maintain the alignment between the circumferential positions of the first projections  313  and the one-end-side first recess parts  6151  around the support shaft  31 . Accordingly, the operator is not required to carry out any operations other than moving the wound body  6  relative to the support shaft  31  in the mounting direction. The operator can eliminate the necessity to intentionally maintain the alignment between the circumferential positions of the support shaft  31  and the core body  61  around the support shaft  31 . Thus, the mounting operation of the wound body  6  to the support shaft  31  can be facilitated. 
     When the operator further moves the first wound body  6  relative to the support shaft  31  in the mounting direction, the first projections  31  enter the one-end-side first recess parts  6151 . When the third projection  318  has been guided to the first one of the guide parts  6161 , the first one of the first projections  313  enters the first one of the one-end-side first recess parts  6151  and the second one of the first projections  313  enters the second one of the one-end-side first recess parts  6151 , while the third one of the first projections  313  enters the third one of the one-end-side first recess parts  6151  and the fourth one of the first projections  313  enters the fourth one of the one-end-side first recess parts  6151 . When the third projection  318  has been guided to the second one of the guide parts  6161 , the first one of the first projections  313  enters the third one of the one-end-side first recess parts  6151  and the second one of the first projections  313  enters the fourth one of the one-end-side first recess parts  6151 , while the third one of the first projections  313  enters the first one of the one-end-side first recess parts  6151  and the fourth one of the first projections  313  enters the second one of the one-end-side first recess parts  6151 . 
     When the operator further moves the first wound body  6  relative to the support shaft  31  in the mounting direction, the end face formed by the packing material  62  on the first wound body  6  comes into contact with the movable parts  314  located at the advanced position. 
     When the operator further moves the first wound body  6  relative to the support shaft  31  in the mounting direction, the first projections  313  are fitted in the one-end-side first recess parts  6151 . The first projections  313  come into contact with the ends of the one-end-side first recess parts  6151 , the retractable parts  316  are released from the contact with the inner peripheral surface parts  617 , project outward in the radial direction of the support shaft  31 , and are caught by the first catch recess parts  6152 A. The movable parts  314  are pushed by the end face formed by the packing material  62  on the first wound body  6  and moved from the advanced position to the retracted position. 
     Thus, the mounting of the first wound body  6  to the support shaft  31  is completed. Thereafter, the operator unwinds the packing material  62  from the wound body  6 , and sets this packing material  62  to the packing material conveyance section  4  and the packing body forming section  5 . 
     When the packing material  62  is entirely unwound from the wound body  6  by the operation of the medicine packing apparatus  1 , only the core body  61  is left on the support shaft  31 . The operator dismounts the core body  61  from the support shaft  31 . When the operator dismounts the core body  61  from the support shaft  31 , the operator holds the core body  61  and moves this core body  61  in the dismounting direction. At this time, the retractable parts  316  are being caught by the first catch recess parts  6152 A, but the retractable parts  316  are pushed inward in the radial direction of the support shaft  31  by the inner peripheral surface parts  617  of the core body  61  along with the movement of the core body  61 . Therefore, the operator can move the core body  61  relative to the support shaft  31  in the dismounting direction without hindrance. 
     Although the description will be partially repeated, this embodiment is configured as shown in  FIG. 2 , in which the packing material supply section  3  includes the support shaft  31 . The support shaft  31  extends from a non-illustrated mounting base. Apart of the packing material conveyance section  4  (i.e., the tension adjustment mechanism  41  shown in  FIG. 1 ) is also disposed on this mounting base. The support shaft  31  has a substantially columnar shape. The support shaft  31  has the outer peripheral part having a cylindrical shape. The support shaft  31  has the proximal end (left part in  FIG. 2 ) and the distal end (right part in  FIG. 2 ). The proximal end of the support shaft  31  is supported by the mounting base. The support shaft  31  includes the main shaft part  311  having a constant radial dimension, and the proximal end shaft part  312  that is located closer to the proximal end than the main shaft part  311  and that has a larger radial dimension than the main shaft part  311 . The step is formed between the main shaft part  311  and the proximal end shaft part  312  as shown in  FIG. 2 . 
     The support shaft  31  is rotatably mounted to the mounting base and supports the wound body  6  (core body  61 ). The support shaft  31  is driven to rotate by the driving unit such as a non-illustrated stepping motor disposed inside the mounting base. The support shaft  31  is rotatable both in the direction in which the packing material  62  is unwound and the direction in which the packing material  62  is wound up. The support shaft  31  is intermittently rotated in response to the supply of the packing material  62  to the packing body forming section  5 . The support shaft  31  is cantilever-supported with respect to the mounting base and has the distal end exposed to the outside. Therefore, as shown in  FIG. 2 , the core body  61  of the wound body  6  is disposed at a position on the exposed side of the support shaft  31 , through which the axis of the support shaft  31  extends, and the wound body  6  is placed onto the support shaft  31  from the distal end toward the proximal end in the axial direction so that the wound body  6  (only the core body  61  is shown in  FIG. 4 ) can be mounted to the support shaft  31 , as shown in  FIG. 4 . The wound body  6  is mounted to the support shaft  31  so as not to be relatively rotatable. 
     The support shaft  31  of this embodiment has a length in the axial direction larger than that of the wound body  6 . Therefore, as shown in  FIG. 4 , a part (i.e., support shaft distal end body  31 B) of the support shaft  31  projects from the core body  61  in the mounted state (i.e., the state where the core body  61  is mounted to the support shaft main body  31 A). The present invention is not necessarily limited to this configuration. The other end of the core body  61  in the mounted state, which will be later described, can be coincident with the distal end of the support shaft  31 . 
     Apart of the support shaft  31  on the distal end side (i.e., part at which the guide projection  317  is formed), which projects from the core body  61 , is the support shaft distal end body  31 B that is a separate body from the support shaft main body  31 A that is a proximal end part of the support shaft  31  and is mounted to the support shaft main body  31 A. This support shaft distal end body  31 B can be used in combination with the wound body  6  of this embodiment. The mounting of the support shaft distal end body  31 B to the support shaft main body  31 A is achieved by means of a fitting engagement used in an engagement structure for mounting a distal end lid of a support shaft of an existing medicine packing apparatus (i.e., structure for mounting the support shaft distal end body  31 B after the distal end lid is removed), or bonding to an existing support shaft (the mounting structure is not limited to these, and various mounting forms can be employed). The support shaft main body  31 A has an outer peripheral part having a cylindrical shape. The support shaft distal end body  31 B in the state of being mounted to the support shaft main body  31 A functions as a mount assisting part that is a part of the support shaft  31 . According to this configuration, the support shaft  31  of this embodiment can be formed by replacing, for example, a lid member provided at the distal end of a short support shaft with the mount assisting part. The support shaft  31  of this embodiment can be formed by the support shaft distal end body (mount assisting part)  31 B to be mounted to the distal end of the support shaft main body  31 A, while avoiding a significant modification of an existing medicine packing apparatus. Therefore, the combination of the wound body  6  of this embodiment and the medicine packing apparatus  1  can be realized at a reduced cost. However, when the support shaft  31  is newly produced, it may be configured to employ not a separate structure but an integrated structure in which the support shaft main body  31 A and the support shaft distal end body  31 B are inseparable from each other. Even for the newly produced support shaft  31 , a separate structure can be employed. For example, when a magnetism detector or the like is disposed inside the support shaft  31 , the separate structure is useful since the inside of the support shaft  31  can be opened according to needs and circumstances. 
     As shown in  FIG. 2 , a plurality of (four in this embodiment) catch projections  313  as the first projections are located at the proximal end shaft part  312  of the support shaft  31 . The catch projections  313  are located with a certain distance from each other (at intervals) in the circumferential direction (rotation direction). The catch projections  313  project outward in the radial direction from the outer peripheral surface of the proximal end of the support shaft  31 . The catch projections  313  extend in the axial direction from the proximal end edge toward the distal end by a certain distance. Some of the catch projections  313  (every other one of the catch projections  313  in the circumferential direction in this embodiment) respectively include moving parts. In this embodiment, as the moving parts, packing-material-running-out detection pins  314  having a rod shape respectively project from some of the catch projections  313  in the radial direction. Distal ends of the packing-material-running-out detection pins  314  are set to be located radially outward from the outer peripheral surface of the core body  61  when the wound body  6  has been mounted to the support shaft  31 . The catch projections  313  provided with the packing-material-running-out detection pins  314  respectively include cutouts  315  extending therethrough in the radial direction and extend in the axial direction. 
     Each of the packing-material-running-out detection pins  314  is biased toward the distal end in the axial direction (right side in  FIG. 4 ) of the support shaft  31  by a biasing force of a non-illustrated spring disposed inside the support shaft  31 . When the wound body  6  with the packing material  62  wound therearound has been mounted to the support shaft  31 , the packing-material-running-out detection pins  314  are pushed out to the side by the packing material  62  layered in the radial direction on the outer periphery of the core body  61  and thereby moved toward the proximal end in the axial direction against the spring urging force. The core body  61  of the wound body  6  includes the cutouts  611  extending through the core body  61  in the radial direction and extending in the axial direction in the same manner as the support shaft  31  at parts which become coincide in position with the packing-material-running-out detection pins  314  when the core body  61  is mounted to the support shaft  31 . The cutouts  611  include the one-end-side cutouts  6111  located on the one end side of the core body  61 , and the other-end-side cutouts  6112  located on the other end side of the core body  61 . The one-end-side cutouts  6111  are located at the same positions as those of the second catch recess parts  6151 A in the circumferential direction of the core body  61 , and each have a cutout shape extending toward the other end of the core body  61 . The other-end-side cutouts  6112  are located at the same positions as those of the first catch recess parts  6152 A in the circumferential direction of the core body  61 , and each have a cutout shape extending from an end face of the other end of the core body  61  toward the one end of the core body  61 . The cutouts  611  allow the packing-material-running-out detection pins  314  to respectively enter when the cutouts  611  are positioned at the proximal end of the support shaft  31 . 
     The cutouts  611  are arranged to be coincident in the circumferential direction with the cutouts  315  of the support shaft  31 . Therefore, the core body  61  must be rotated in the circumferential direction relative to the support shaft  31  by the operator in order to align the cutouts  611  (this operation will be explained later). When the packing material  62  is unwound from the wound body  6  and run out (that is, only the core body  61  is left), the pushing-out by the packing material  62  is eliminated, and therefore the packing-material-running-out detection pins  314  biased by the springs move toward the distal end in the axial direction and enter the cutouts  611  (see  FIG. 4 ). A sensor or the like detects the entrance of the packing-material-running-out detection pins  314  into the cutouts  611  and thereby detects the run-out of the packing material. For example, the operation of the medicine packing apparatus  1  is stopped based on the detection of the completion of the unwinding of the entire packing material  62  from the wound body  6 . Specifically, the packing material supply section  3  can be automatically stopped. 
     The retractable part  316  projects from the outer peripheral part (specifically, outer peripheral surface) of the support shaft  31 . At least one retractable part  316  is disposed (two parts in this embodiment, although another one part is not illustrated). When a plurality of retractable parts  316  are disposed as in this embodiment, these retractable parts  316  are located with a certain distance from each other (at intervals) in the circumferential direction. In this embodiment, the two retractable parts  316  are located at equal intervals in the circumferential direction (that is, at angular intervals of 180°). In this embodiment, the retractable parts  316  are respectively located at the same positions in the circumferential direction as the positions of any ones of the catch projections  313 . The retractable parts  316  are respectively located at the same positions in the circumferential direction as the positions of the catch projections  313  that respectively include the packing-material-running-out detection pins  314  and the cutout  315 . The retractable parts  316  are respectively located at the positions different from the positions of the guide projections  317  and the sub-guide projection  318  in the circumferential direction. In this embodiment, they are angularly displaced 90° from each other. The retractable parts  316  are projections that have, for example a spherical or a hemispherical shape, are biased radially outward by springs disposed inside the support shaft  31  to project partly from the outer peripheral surface of the support shaft  31 . The retractable parts  316  are disposed to be able to be advanced from and retracted into the outer peripheral surface of the support shaft  31 . 
     The retractable parts  316  respectively engage the step parts  615   a  (see  FIG. 3 ) of those located on the distal end side of the support shaft  31  among the catch recess parts  615  formed to recess outward in the radial direction with respect to the inner peripheral part of the core body  61  (in this embodiment, the catch recess parts are composed of the other-end-side catch recess parts  6152  as the first catch recess parts  6152 A, and the one-end-side catch recess parts  6151  as the second catch recess parts  6151 A). The retractable parts  316  biased by the springs are caught by the other-end-side catch recess parts  6152  when the core body  61  is mounted to the support shaft  31  from the one end side. The retractable parts  316  biased by the springs are caught by the one-end-side catch recess parts  6151  when the core body  61  is mounted to the support shaft  31  from the other end side. Thereby, in the state where the core body  61  is mounted on the outer periphery of the support shaft  31 , the core body  61  is prevented from being displaced relative to the support shaft  31  in a direction from the proximal end toward the distal end of the support shaft  31  by the retractable parts  316  caught by the catch recess parts  615 . Thus, the wound body  6  can be securely mounted to the support shaft  31 . On the other hand, since the retractable parts  316  are biased by the springs, the core body  61  moves relative to the support shaft  31  by moving the core body  61  in the axial direction by a force stronger than the biasing force of the springs, for example, when the core body  61  is pulled out of the support shaft  31 . Therefore, the operation of pulling the core body  61  out of the support shaft  31  can be carried out without hindrance. In a step before the engagement of the retractable parts  316  with the step parts  615   a  in the course of mounting the core body  61  to the support shaft  31 , the retractable parts  316  are in contact with the inner peripheral surface parts  617  of the core body  61 . At this time, the retractable parts  316  are pushed by the inner peripheral surface parts  617  and therefore move inward in the radial direction. 
     At least one guide projection  317  as the second projection  317  (two projections in this embodiment) are formed at the distal end of the support shaft  31  (main shaft part  311 ). When the plurality of guide projections  317  are formed, these guide projections  317  are located with a certain distance from each other (at intervals) in the circumferential direction. In this embodiment, they are located at an angular distance of 180°. The guide projections  317  project radially outward from the outer peripheral surface of the distal end of the support shaft  31 . The projecting positions of the guide projections  317  are the same as the projecting positions of some of the catch projections  313  (two projections among four projections in this embodiment) in the circumferential direction. Specifically, the projecting positions of the guide projections  317  are the same as the projecting positions of the catch projections  313  each of which does not include the packing-material-running-out detection pin  314  and the cutout  315 . The projecting amount of the guide projections  317  projecting in the radially outward direction with respect to the outer peripheral part of the support shaft main body  31 A is smaller than that of the catch projections  313 . 
     As shown in  FIG. 2 , each of the guide projections  317  includes the main body part  3171  having a constant width, and the tapered part  3172  located on the distal end side of the main body part  3171 , having a width decreasing toward the distal end and integrally formed with the main body part  3171 . The tapered part  3172  has ends in the width direction, which respectively have inclined surfaces. These inclined surfaces each are formed in a straight shape as viewed in the radial direction in this embodiment, but this is not essential. A curved line shape or any other shape can be employed. Also, these inclined surfaces are formed symmetrically with respect to the axial direction in this embodiment, but these may be formed asymmetrically. 
     The sub-guide projection  318  is formed as the third projection, which projects outward in the radial direction, at a middle position between the proximal end and the distal end of the support shaft  31  on the outer peripheral part of the support shaft  31 . At least one sub-guide projection  318  (one projection in this embodiment) is formed on the main shaft part  311  to be continuous with the proximal end of a corresponding one of the guide projections  317 . As described above, since two guide projections  317  are formed in this embodiment, the sub-guide projection  318  aligns with one of the guide projections  317  on the proximal end side (guide projection  317  shown in  FIG. 2 ) along the extension line in the axial direction. The catch projections  313  are located on the proximal end side of the sub-guide projection  318 . 
     The sub-guide projection  318  is located at the same position as the guide projections  317  in the circumferential direction around the central axis, and the projecting amount of the sub-guide projection  318  projecting outward in the radial direction with respect to the outer peripheral part of the support shaft  31  is the same as that of the guide projection  317 . The sub-guide projection  318  is guided to the guide part  6161  so as to allow the circumferential positions of the catch projections  313  and the catch recess parts  615  around the central axis to be kept in alignment with each other when the core body  61  is mounted on the outer periphery of the support shaft  31 . 
     The inner peripheral surface parts  617  of the core body  61  come into contact with the guide projections  317  by the placement of the core body  61  onto the support shaft  31  so that the alignment of the circumferential position of the core body  61  with the circumferential position of the support shaft  31  around the support shaft  31  can be achieved (description on the alignment of the core body  61  will be later described).  FIG. 5  shows the operation for it. In  FIG. 5 , the guide projections  317  (shown by two-dot chain line) are shown as moving in the axial direction relative to the core body  61  for ease of understanding. However, the actual configuration is opposite to the illustrated configuration. That is, the core body  61  actually moves in the axial direction relative to the guide projections  317 . At this time, the circumferential positions of the support shaft  31  and the core body  61  are brought into alignment with each other by the rotational movement relative to each other in the circumferential direction. According to this embodiment, when the placement of the core body  61  onto the support shaft  31  is progressed and then the inner peripheral surface parts  617  of the core body  61  do not contact the guide projections  317  any more, the circumferential edges of the inner peripheral surface parts  617  come into contact with the sub-guide projection  318  so that the operation for alignment of the circumferential position of the core body  61  with the circumferential position of the support shaft  31  can be continued. Therefore, it is possible to securely achieve the alignment during the placement of the core body  61  onto the support shaft  31 . During the alignment operation, the support shaft  31  is kept unmoved in the circumferential direction so as to allow the core body  61  to be rotated relative to the support shaft  31 , or the core body  61  is kept unmoved in the circumferential direction so as to allow the support shaft  31  to be rotated relative to the core body  61  in the circumferential direction. Or, both the support shaft  31  and the core body  61  are allowed to be respectively rotated in the circumferential direction. 
     As shown in  FIG. 2 , the core body  61  of the wound body  6  has a cylindrical shape (circular cylindrical shape) or a tubular shape (circular tubular shape) with a circular cross section taken in the radial direction. The core body  61  has an inner peripheral part having a circular cylindrical shape. As shown in  FIG. 1 , the packing material  62  is wound around the outer peripheral surface of the core body  61 . The outer diameter of the core body  61  is constant in the axial direction. Therefore, no step is formed on the outer peripheral surface of the core body  61  so that the packing material  62  can be wound up with no fold line formed therein. The core body  61  can be mounted on and dismounted from the outer periphery of the support shaft  31  of the packing material supply section  3  by being moved in the axial direction. The core body  61  is mounted on the outer periphery of the support shaft  31  by allowing the circumferential positions of the core body  61  and the support shaft  31  to be aligned with each other around the support shaft  31 . The core body  61  has the one end and the other end. The one end is a part close to the support shaft  31  (left back part) in  FIG. 2 , and the other end is a part far from the support shaft  31  (right front part) in  FIG. 2 . The core body  61  of this embodiment has a symmetrical shape relative to the center in the axial direction, in which the shape of the one end is the same as the shape of the other end except for magnet retention parts  614 . The symmetrical shape allows the core body  61  to be mounted to the support shaft  31  from any of the one end side and the other end side. Thus, the permanent magnets (magnets  613 ) retained by the magnet retention parts  614  allow the operator to know whether the core body  61  is mounted to the support shaft  31  with the one end or the other end of the core body  61  being directed to the support shaft  31  so that at least two different types of the packing material  62  can be dealt by the single core body  61  having the same shape. Thus, the control for manufacturing the wound body  6  can be easily performed. 
     As a regular direction (mounting direction) for the core body  61 , there are two cases depending on the type of the packing material  62  to be wound up, namely one case where the core body  61  is mounted to the support shaft  31  from the one end side, and another case where the core body  61  is mounted to the support shaft  31  from the other end side. At the time of mounting, the core body  61  is moved in the axial direction from the distal end toward the proximal end of the support shaft  31 . The core body  61  has the cutouts  611  at both ends. With the core body  61  mounted to the support shaft  31 , the cutouts  611  are located at the positions corresponding to the packing-material-running-out detection pins  314  projecting outward in the radial direction from the support shaft  31 . The cutouts  611  extend through the core body  61  in the radial direction and define spaces opening at the end faces of the core body  61 . Each of the packing-material-running-out detection pins  314  is movable in the axial direction within each corresponding one of the spaces. This movement is done after the packing material  62  has been unwound from the wound body  6  and no packing material  62  remains on the wound body  6  ( FIG. 4  shows the state after the movement). 
     The core body  61  includes the magnet retention parts  614  that retain permanent magnets (magnets  613 ) combined to correspond to a magnetic detecting part such as a magnetic sensor that is included in the packing material supply section  3  for identifying the wound body  6 . In this embodiment, two magnet retention parts  614  are located at the one end of the core body  61  at intervals of 90° in the circumferential direction. Two magnet retention parts  614  are located at the other end of the core body  61  at intervals of 180° in the circumferential direction. Thus, the positions at which the magnet retention parts  614  are located are different between the one end and the other end. Therefore, when the permanent magnets (magnets  613 ) are arranged at all the magnet retention parts  614 , the positional relationship of the permanent magnets (magnets  613 ) arranged at the both ends are different from each other. 
     The permanent magnets (magnets  613 ) may be arranged at a selected number of the magnet retention parts  614  among all the magnet retention parts  614 . The identification of the wound body  6  specifically means the identification of a material of the packing material  62 , which relates to the sealing temperature for proper bonding when the packing material  62  is bonded by heat sealing. The identification may be made by the magnetic detecting part that detects the number of the magnet retention parts  614  at which the permanent magnets (magnets  613 ) are arranged, the polarity or the strength of the magnetic force of the permanent magnets (magnets  613 ). The magnet retention parts  614  are not needed in a medicine packing apparatus, in which the identification of the wound body  6  is made by any other m other than the magnet, for example, electromagnetic detection by using, for example, IC chips such as the RFID tag enabling the wireless identification, or optical detection by the two-dimensional code, or in a medicine packaging apparatus, in which the magnetic detecting part is removed or disabled by the modification. In the configuration of performing the electromagnetic detection, the RFID tag or the like is arranged in the inner space of the core body  61 , for example. The RFID tag or the like may be arranged on the inner peripheral surface or outer peripheral surface of the core body  61 . 
     The one-end-side magnets  6131  are located at the one end of the core body  61  in the circumferential direction of the core body  61  according to a first positional relationship. On the other hand, the other-end-side magnets  6132  are located at the other end of the core body  61  in the circumferential direction according to a second positional relationship different from the first positional relationship. In the state where the core body  61  is mounted on the outer periphery of the support shaft  31 , the medicine packing apparatus  1  is configured such that the magnetic detecting part detects at least one of a plurality of the one-end-side magnets  6131  and a plurality of the other-end-side magnets  6132  and sets the sealing temperature at which the packing material  62  is heat sealed. 
     The inner periphery of the core body  61  includes the catch recess parts  615  as the first recess parts, guide recess parts  616  as the second recess parts, and the inner peripheral surface parts  617 . A pair of the catch recess parts  615 , a pair of the guide recess parts  616 , and a pair of the inner peripheral surface parts  617  are disposed in the circumferential direction. These pairs can be located at equal intervals in the circumferential direction. In this embodiment, four pairs of the catch recess parts  615  are located at equal intervals in the circumferential direction, and two pairs of the guide recess parts  616  and two pairs of the inner peripheral surface parts  617  are located at equal intervals in the circumferential direction. However, it is possible to dispose only one pair, or locate a plurality of pairs of each of them at unequal intervals. These parts  615  to  617  are located symmetrically in the axial direction (with reference to the center in the axial direction). 
     Each of the catch recess parts  615  includes an one-end-side catch recess part  6151  as the one-end-side first recess part formed in the inner periphery on the one end side of the core body  61 , and an other-end-side catch recess part  6152  as the other-end-side first recess part formed in the inner periphery on the other end side of the core body  61 . Apart of each of the catch recess parts  615  which is located close to the proximal end in the state where the core body  61  is mounted to the support shaft  31  engages the catch projection  313  of the support shaft  31  to enable transmission of a rotational force in the circumferential direction between the core body  61  and the support shaft  31 . That is, in the state where the core body  61  is mounted on the outer periphery of the support shaft main body  31 A, the support shaft main body  31 A and the core body  61  are integrally rotatable around the central axis of the outer peripheral part of the support shaft main body  31 A by the engagement between the catch projections  313  and the catch recess parts  615 . The number of the catch recess parts  615  is the same as the number of the catch projections  313  of the support shaft  31 . The number of the pairs each comprising the guide recess part  616  and the inner peripheral surface part  617  is the same as the number of the guide projections  317  of the support shaft  31 . However, the number of the catch recess parts  615  can be larger than the number of the catch projections  313  of the support shaft  31 . The number of pairs each comprising the guide recess part  616  and the inner peripheral surface part  617  can be larger than the number of the guide projections  317 . 
     The guide recess parts  616  are located in the inner periphery of the core body  61  to extend along the axial direction. The guide recess parts  616  have an inner diameter larger than the outer diameter of the support shaft  31 . The recessing amount of the guide recess parts  616  recessing outward in the radial direction with respect to the inner peripheral part of the core body  61  (more specifically, the inner peripheral surface, still more specifically, the inner peripheral surface of the inner peripheral surface part  617  or the large thickness part  619 ) is smaller than the recessing amount of the catch recess parts  615  (i.e., the one-end-side catch recess parts  6151 , the other-end-side catch recess parts  6152 ). Therefore, it is possible to prevent deterioration of the strength of the core body  61  due to the recesses. The guide recess parts  616  are formed along the entire circumference of the core body  61  on each of the one end and the other end of the core body  61  (parts  6162   a  and  6163   a  shown in  FIG. 3 ). Therefore, when the core body  61  is inserted around the support shaft distal end body  31 B, it is not necessary to align the circumferential position of the core body  61  with the circumferential position of the support shaft distal end body  31 B around the central axis. Thus, easy operation can be realized. The guide recess parts  616  engage the guide projections  317  and the sub-guide projection  318  when the core body  61  is mounted to the support shaft  31 , thereby aligning the circumferential position of the core body  61  with the circumferential position of the support shaft  31  around the support shaft  31 . That is, when the core body  61  is mounted on the outer periphery of the support shaft main body  31 A, the guide projections  317  and the guide recess parts  616  engage the guide recess parts  616 , thereby aligning the circumferential positions of the guiding projections  317  and the sub-guide projection  318  with the circumferential positions of the guide recess parts  616  around the central axis of the outer peripheral part of the support shaft main body  31 A. Each of the guide recess parts  616  includes the positioning part  6161  that has a constant width (dimension in the circumferential direction) and extends in the axial direction, and a leading part that is continuous with the one end side or the other end side of the positioning part  6161 , and has a width (dimension in the circumferential direction) increasing as it advances from the center toward the one end or the other end in the axial direction. This leading part includes the one-end-side leading part  6162  located close to the one end of the core body  61 , and the other-end-side leading part  6163  located close to the other end of the core body  61 . The width of the positioning part  6161  is substantially the same as the width of the guiding projections  317 . Specifically, the width of the positioning part  6161  is larger than (slightly larger than) the width of the guiding projections  317  to the extent which allows for the movement of the guiding projections  317  through the positioning part  6161  in the axial direction of the core body  61 . 
     Each of the leading parts  6162  and  6163  has a dimension in the circumferential direction decreasing as it advances from the one end or the other end toward the center part in the axial direction, so that the core body  61  is moved in the circumferential direction according to this decrease (see  FIG. 5  for the one-end-side leading part  6162 ;  FIG. 5  shows the opposite relationship between the core body  61  and the guiding projections  317  regarding the movability and the immovability to the actual relationship). The catch recess parts  615  of the core body  61  coincide with the catch projections  313  of the support shaft  31 . Thus, the core body  61  is rotated relative to the support shaft  31  to have their circumferential positions aligned with each other. 
     Thus, when the core body  61  is mounted on the outer periphery of the support shaft  31 , the leading parts  6162  and  6163  lead the guiding projections  317  to allow the circumferential positions of the catch projections  313  to be aligned with the circumferential positions of the one-end-side catch recess parts  6151  or the other-end-side catch recess parts  6152  around the central axis (when seen from the opposite viewpoint, the leading parts  6162  and  6163  are led by the guiding projections  317 ). 
     The parts  6162   a  and  6163   a  of the inner peripheral part of the core body  61  which respectively correspond to the position of the one end of the core body  61  and the position of the other end of the core body  61  (see  FIG. 3 ) do not produce an effect of moving the core body  61  in the circumferential direction by the contact with the guiding projections  317 . The parts  6162   a  and  6163   a  produce an effect of facilitating the mounting of the core body  61  to the support shaft  31 . The inner diameter of the parts  6162   a  and  6163  is larger than the outer diameter of the support shaft  31 . That is, the inner diameter of the parts  6162   a  and  6163   a  does not have a tight relationship, that is, has a “loose” relationship with the outer diameter of the support shaft  31 . Therefore, the insertion of the wound body  6  (core body  61 ) onto the support shaft  31  can be easily made compared with the configuration lacking such a clearance. Since the wound body  6  having the core body  61  on which the packing material  62  is wound is heavy (in particular, a new wound body  6  is heavy because of no consumption of the packing material  62 ), the facilitation of the insertion is a great advantage for the user of the medicine packing apparatus  1 . This effect is also an effect produced by the later-described small thickness parts  618 . 
     The parts  6162   a  and  6163   a  can be said as “free areas” for allowing for the rotation of the core body  61  without limitation. The positioning part  6161  can be said as “limitation areas” in which the rotation of the core body  61  is limited to the extent which makes it substantially impossible (specifically, a clearance exists to the extent which allows for a positional displacement of the guide recess parts  616  of the core body  61  in the axial direction relative to the guiding projections  317  and the sub-guide projection  318  of the support shaft  31 ). The leading parts  6162  and  6163  can be said as “transition areas” in which the range in which the core body  61  is rotatable is smaller in the central side in the axial direction than that in the one end side and the other end side in the axial direction. The free area, the transition area, and the limitation area of each of the guide recess parts  616  are continued in this order from the one end side to the center in the axial direction. Further, the transition area and the free area are continued in this order from the center in the axial direction to the other end in the axial direction. 
     The inner peripheral surface parts  617  are parts adjacent to the guide recess parts  616  in the circumferential direction. The inner peripheral surface parts  617  have a larger thickness (i.e., a larger dimension in the radial direction) than that of the guide recess parts  616 . Each of the inner peripheral surface parts  617  is located at the center in the axial direction of the core body  61  and have ends that respectively do not reach the edges on the both end sides of the core body  61  in the axial direction and that are located between the center in the axial direction and the edges on the both end sides in the axial direction of the core body  61 . Each of the inner peripheral surface parts  617  has an edge having a shape corresponding to the shape of the leading parts  6162  and  6163 , and has a dimension in the circumferential direction that increases as it advances from the one end side toward the center in the axial direction and decreases as it advances from the center toward the other end in the axial direction. Thus, each of the inner peripheral surface parts  617  has a shape symmetrical in the axial direction with respect to the center in the axial direction. 
     The surface of each of the inner peripheral surface parts  617  is a curved face having a constant curvature in the circumferential direction. The curvature the surface in the circumferential direction of each of the inner peripheral surface parts  617  is the same (substantially the same) as the curvature in the circumferential direction of the outer peripheral surface of the support shaft  31 . Since the surface of each of the inner peripheral surface parts  617  is a curved face having a wide area, each of the inner peripheral surface parts  617  comes into surface contact with the outer peripheral surface of the support shaft  31  when the core body  61  is mounted to the support shaft  31 . For example, in the configuration in which projections are formed on the inner peripheral surface of the support shaft to extend in the axial direction, the core body comes in into line contact with the outer peripheral surface of the support shaft. In this arrangement, a phenomenon called “winding and tightening” sometimes occurs due to the stress (i.e., force causing shrinkage in the longitudinal direction) remaining in the packing material after the winding operation in the manufacturing the wound body, the surrounding temperature or humidity. This “winding and tightening” may cause deformation (distortion) to the main part of the core body that is in a floating state relative to the supporting shaft. Contrarily to this, in this embodiment, since the surface of each of the inner peripheral surface parts  617  comes into surface contact with the outer peripheral surface of the support shaft  31 , it is possible to reduce the possibility of causing the aforementioned deformation (distortion) to the core body  61 . 
     Since the inner peripheral surface parts  617  have a large thickness and the guide recess parts  616  have a small thickness, a step is formed between each of the inner peripheral surface parts  617  and each of the guide recess parts  616 . That is, the edges in the circumferential direction of the positioning part  6161  of each of the guide recess parts  616  and the leading parts  6162  and  6163  are defined by each of the inner peripheral surface parts  617 . Each of the inner peripheral surface parts  617  has core-body-side inclined faces  6171  defining the edges in the width direction (circumferential direction) of the leading parts  6162  and  6163  of the guide recess parts  616  (see  FIG. 3 ). 
     When the core body  61  including the catch recess parts  615 , the guide recess parts  616 , and the inner peripheral surface parts  617  is to be mounted to the support shaft  31  from the one end side, the leading parts  6162  of the core body  61  are first positioned to face the guiding projections  317  of the support shaft  31 . Further, when the core body  61  is moved in the axial direction, the positions of the positioning parts  6161  of the core body  61  are changed relative to the guiding projections  317  (see position changes shown by the arrows in  FIG. 5 ). 
     The positioning parts  6161  are also the guide parts for guiding the guiding projections  317 . Each of the positioning parts  6161  as the guide parts is located at the center in the axial direction of the core body  61 , that is, located between the one-end-side leading part  6162  and the other-end-side leading part  6163 , is continuous with the leading parts  6162  and  6163 , and is configured to guide the guiding projection  317  so as to allow the circumferential positions of the catch projections  313  and the catch recess parts  615  (i.e., one-end-side catch recess parts  6151  or the other-end-side catch recess parts  6152 ) to be maintained in alignment with each other around the outer periphery part of the support shaft main body  31 A when the core body  61  is mounted on the outer periphery of the support shaft main body  31 A. Thereby, when the core body  61  is mounted to the support shaft main body  31 A, it is not necessary to intentionally maintain the state where the circumferential position of the support shaft main body  31 A is aligned with the circumferential position of the core body  61  around the central axis. Thus, this allows for ease of the alignment operation. 
     The one-end-side leading part  6162  has a width (dimension in the circumferential direction) decreasing as it advances from the one end toward the other end of the core body  61  until it reaches the center in the axial direction. Thereby, when the core body  61  is mounted on the outer periphery of the support shaft main body  31 A, the one-end-side leading part  6162  is configured to lead the guiding projection  317  to allow the circumferential positions of the catch projections  313  and the catch recess parts  615  to be aligned with each other around the central axis of the outer periphery part of the support shaft main body  31 A. According to this configuration, it is not necessary to intentionally align the circumferential position of the support shaft main body  31 A and the circumferential position of the core body  61  with each other around the central axis. This allows for ease of the operation. The sub-guide projection  318  is configured to lead the core body  61  from the center to the other end in the axial direction as the mounting operation proceeds from the one end toward the other end of the core body  61 . 
     When the guiding projection  317  is located at an end in the circumferential direction of the corresponding one-end-side leading part  6162 , the edge of the one-end-side leading part  6162 , that is, the core-body-side inclined face  6171  on the one end side contacts the guiding projection  317 . Thereby, the guiding projection  317  is led to a position at which it coincides with the positioning part  6161  of the core body  61 . When the core body  61  is moved further in the axial direction, the guiding projection  317  is released from the positioning part  6161  of the core body  61 . Subsequently, in place of the guiding projection  317 , the sub-guide projection  318  formed continuously with the proximal end of the guiding projection  317  is led to a position at which it coincides with the positioning part  6161  (see  FIG. 5 ). As a result of the leading by the guiding projection  317  and the sub-guide projection  318 , the catch projections  313  engage the catch recess parts  615 . When the core body  61  is moved further in the axial direction, the guiding projections  317  partially project outward from the other end of the core body  61  and thereby the catch projections  313  completely engage the catch recess parts  615  to finally come into a state as shown in  FIG. 5 . 
     The edge (core-body-side inclined face  6171 ) of the one-end-side leading part  6162  sometimes comes into contact with the inclined face of the tapered part  3172  of the guiding projection  317  (see  FIG. 5 ). Since the core-body-side inclined face  6171  that is the edge of the one-end-side leading part  6162  has substantially the same degree of inclination as that of the inclined face of the tapered part  3172  of the guiding projection  317 . Therefore, the contact therebetween can be smoothly performed. The same is applicable to the other-end-side leading part  6163 . 
     According to the core body  61  of this embodiment, the mounting of the core body  61  to the support shaft  31  can be easily performed by the guide recess parts  616 , and the strength of the core body  61  can be secured by the inner peripheral surface parts  617 . 
     The core body  61  includes the small thickness parts  618  and the large thickness parts  619 . The small thickness parts  618  are disposed in the inner periphery of the core body  61  respectively on the one end side and the other end side in the axial direction. Each of the small thickness parts  618  is fitted on the proximal end shaft part  312  of the support shaft  31  in the state where the core body  61  is mounted to the support shaft  31 . The large thickness parts  619  are fitted on the main shaft part  311  of the support shaft  31  in the state where the core body  61  is mounted to the support shaft  31 . The large thickness parts  619  have a thickness larger than the small thickness parts  618 . The small thickness parts  618  correspond to the aforementioned guide recess parts  616 , and the large thickness parts  619  correspond to the aforementioned inner peripheral surface parts  617 . The small thickness parts  618  are formed for the purpose different from that of the guide recess parts  616 , while the formation area of the small thickness parts  618  in the inner periphery of the core body  61  is the same as that of the guide recesses  616 . The formation areas of the small thickness parts  618  and the guide recess parts  616  can be differentiated from each other. The large thickness parts  619  are formed for the purpose different from that of the aforementioned inner peripheral surface parts  617 , while the formation area of the large thickness parts  619  in the inner periphery of the core body  61  is the same as that of the inner peripheral surface parts  617 . The formation areas of the large thickness parts  619  and the inner peripheral surface parts  617  can be differentiated from each other. 
     Recycling of the Used Core Body 
     The core body  61  can be repeatedly used many times by recycling the core body  61  after the core body  61  is used up. This can contribute to, for example, saving resources. The recycling is realized by winding a new packing material  62  around the used core body  61  recovered from the user of the medicine packing apparatus  1 . The winding of the new packing material  62  around the core body  61  to be recycled makes it possible to manufacture a new wound body  6 . For the smooth recovery, it may be configured such that the wound body  6  is delivered to the user while the core body  61  of it is rented to the user, and the user returns the core body  61  thereafter. This can promote the recovery of the core body  61 . 
     The winding of a new packing material  62  around the used core body  61  can be made by, for example, a method, in which the new packing material  62  is wound around a separate core body (e.g., paper cylinder)  63  having an inner diameter larger than the outer diameter of the core body  61  (see  FIG. 19 , for example), and a thus previously produced packing material roll (replacement wound body) is mounted to the used core body  61 . When employing this method, it is possible to adjust the difference in dimension between the outer diameter of the used core body  61  and the inner diameter of the separate core body by interposing a spacer such as a rubber ring between the used core body  61  and the separate core body. 
     The production of the new wound body  6  can be made by a supplier of the wound body  6 , or the works relating to the production can be made by the user according to the instructions sent from the supplier of the wound body  6  to the user. In the latter case, the used core body  61  is not recovered but remains possessed by the user&#39;s site. The instructions from the supplier of the wound body  6  to the user may be explicitly or implicitly made. Examples of the implicit instructions include transferring, selling or assignment of the replacement wound body. 
     Possibility to Modify the Embodiment 
     Although the description was made on the one embodiment of the present invention, the present invention is not necessarily limited to the above embodiment and can be subjected to various modifications within the gist of the present invention. 
     The support shaft  31  may have various forms as shown in, for example,  FIG. 6  and  FIG. 7 . The support shaft  31  as shown in  FIG. 6  and  FIG. 7  is basically the same as the support shaft  31  of the above embodiment, but is different from the support shaft  31  of the above embodiment in that the third projection (sub-guide projection)  318  is not provided. That is, the support shaft  31  can be configured to eliminate the sub-guide projection  318 . 
     The support shaft  31  having this form is available by modifying a support shaft of an existing medicine packing apparatus. The support shaft of the existing medicine packing apparatus includes the support shaft main body  31 A and a distal end cover. The distal end cover is mounted to the distal end of the support shaft main body  31 A to cover the distal end of the support shaft main body  31 A. The support shaft  31  of  FIG. 6  and  FIG. 7  is in a state where the distal end cover is removed from the distal end of the support shaft main body  31 A and the support shaft distal end body (mount assisting device)  31 B is mounted to the distal end of the support shaft main body  31 A. The support shaft  31  having such a configuration can be produced without the necessity to greatly modify the support shaft of the existing medicine packing apparatus. Thus, it is possible to realize the combination of the wound body  6  of this embodiment and the medicine packing apparatus  1  at low cost. 
     The core body  61  may have forms like modified examples shown in  FIG. 8  to  FIG. 18 . That is, at least one third recess part  6172  (one recess in this example) may be formed in the inner peripheral part of the core body  61 . The retractable part  316  engages the third recess part  6172  when the core body  61  is mounted on the outer periphery of the support shaft  31 . The third recess part  6172  is located at an intermediate position between the one end of the core body  61  and the other end of the core body  61  and recesses outward in the radial direction. The recessing amount of the third recess part  6172  recessing outward in the radial direction with respect to the inner peripheral part of the core body  61  (specifically, the inner peripheral surface of the core body  61 ) is smaller than the recessing amount of the one-end-side catch recess parts  6151  and the other-end-side catch recess parts  6152 . Therefore, it is possible to prevent lowering of the strength of the core body  61  due to the formation of the third recess part  6172 . 
     The third recess part  6172  is located at a certain angular position in the circumferential direction of the core body  61 . In this embodiment, the third recess part  6172  is located at an angular position displaced 90° from one of the two guide recess parts  616  in the circumferential direction of the core body  61 . When the core body  61  is seen from the one end side (left end side in  FIG. 8 ) of the core body  61  and the angular position of the first one of the one-end-side first recess parts  6151  is designated as an angle of 0° in the circumferential direction of the core body  61 , the third recess part  6172  is located at an angle of 270° in the clockwise direction. 
     When the operator moves the wound body in the mounting direction relative to the support shaft  31 , the third recess part  6172  guides the retractable part  316  so as to allow the circumferential positions of the first projections  313  and the first recess parts  615  (specifically, the one-end-side first recess parts  6151  or the other-end-side first recess parts  6152 ) to be kept in alignment with each other around the support shaft  31 . Thus, the operator is required only to move the wound body  6  in the mounting direction relative to the support shaft  31  even in the case where the support shaft  31  is not provided with the sub-guide projection  318 . The operator is not required to intentionally maintain the alignment between the circumferential positions of the support shaft  31  and the core body  61  around the support shaft  31 . Therefore, the mounting operation of the wound body to the support shaft  31  can be facilitated. 
     The shape of a part of the core body  61  of this modified example close to the center in the axial direction is not limited to those as shown in  FIG. 8  to  FIG. 18  and can be various shapes. The core body  61  can be configured to eliminate the magnet retention parts  614 . Although the two inner peripheral surface parts  617  are provided as described above, the shape of one of the inner peripheral surface parts  617  in which the third recess part  6172  is not provided can be various shapes. 
     Regardless of whether the magnet retention parts  614  are provided or not, the core body  61  can be configured to eliminate the magnets  613 . In such a case, the medicine packing apparatus  1  can be configured to set the sealing temperature using a different means. Also, in this case, the orienting direction of the core body  61  relative to the packing material  62  may be any direction. The fold line of the packing material  62  can be located close to the one end of the core body  61  or the other end of the core body  61 . In this case, since the orienting direction is not limited to a certain direction, the manufacturing of the wound body  6  can be facilitated. 
     According to the aforementioned embodiment, the circumferential positions of the first projections  313  and the first recess parts  615  (the one-end-side catch recess parts  6151  or the other-end-side catch recess parts  6152 ) are aligned with each other around the central axis by the engagement between the second projections  317  and the second recess parts  616 . Therefore, even for the wound body  6  with the packing material  62  wound therearound, the alignment of the circumferential positions can be easily made. Thus, the mounting operation of the wound body  6  to the support shaft  31  can be facilitated. 
     REFERENCE SIGNS LIST 
     
         
           1 : Medicine packing apparatus 
           2 : Packing section 
           3 : Packing material supply section 
           31 : Support shaft 
           31 A: Support shaft main body 
           31 B: Support shaft distal end body 
           311 : Main shaft part 
           312 : Proximal end shaft part 
           313 : Catch projection, first projection 
           314 : movable part, packing-material-running-out detection pin 
           316 : Retractable part 
           317 : Guiding projection, second projection 
           318 : Sub-guide projection, third projection 
           4 : Packing material conveyance section 
           5 : Packing body forming section 
           6 : Wound body 
           61 : Core body 
           611 : Cutout 
           6111 : One-end-side cutout 
           6112 : Other-end-side cutout 
           613 : Magnet 
           6131 : One-end-side magnet 
           6132 : Other-end-side magnet 
           614 : Magnet retention part 
           6141 : One-end-side retaining part 
           6142 : Other-end-side retaining part 
           615 : Catch recess, first recess part 
           6151 : One-end-side first recess part, second catch recess part, one-end-side catch recess part 
           6152 : Other-end-side first recess part, first catch recess part, other-end-side catch recess part, 
           616 : second recess part, guide recess part 
           6161 : Guide part, positioning part 
           6162 : One-end-side leading part 
           6163 : Other-end-side leading part 
           617 : Inner peripheral surface part 
           618 : Small thickness part 
           619 : Large thickness part 
           62 : Packing material