Abstract:
A delivery reel for an elongated sheet, having a disk-shaped flange member on which a sheet roll is positioned; an auxiliary core member of generally cylindrical shape split in the circumferential direction to enable expansion in diameter, and inserted into the inside diameter part of the sheet roll; a main core member fitted into the auxiliary core member which has been inserted into the sheet roll; and a stopper member attached to the circumferential edge of the flange member, and jutting toward the outside in the radial direction. The main core member has a plate spring. In a state in which the auxiliary core member has been inserted into the inside diameter part of the sheet roll, and the main core member has been fitted into the auxiliary core member, the plate spring presses the inside peripheral surface of the auxiliary core member toward the outside in the radial direction.

Description:
TECHNICAL FIELD 
     The invention relates to an elongated sheet feeding reel, which is used by stacking elongated sheet feeding reels one on another in a multi-tiered manner with elongated sheets wound around the respective elongated sheet feeding reels, and in particular, relates to an elongated sheet feeding reel, which is suitable to be used when an elongated sheet in the upper tier is connected to an elongated sheet in the lower tier adjacent to the upper tier, thereby continuously feeding the elongated sheets. 
     BACKGROUND ART 
     Generally, a tubular label such as a shrink label, which is to be attached to a container or the like, is attached to the container or the like by a labeling apparatus sequentially cutting an elongated strip-like label forming base material that has been folded in a sheet with multiple labels connected together. Usually, such an elongated sheet-like label forming base material is used by: setting, on a feeding apparatus of the labeling apparatus, what has been obtained by winding the elongated sheet-like label forming base material into a roll around a paper tube (hereinafter referred to as a “sheet roll”); and continuously feeding the sheet roll. 
     Incidentally, the length of a label forming base material that can be wound into a roll has a natural limit. This requires the frequent replacement of the sheet roll set on the labeling apparatus. Consequently, it is not possible to allow the labeling apparatus to operate efficiently. 
     Thus, conventionally, sheet rolls are mounted on reels, and the reels are stacked one on another in a multi-tiered manner. Then, the sheet roll mounted on the reel in the upper tier is connected to the sheet roll mounted on the reel in the lower tier, thereby continuously feeding label forming base materials from the plurality of respective reels. This reduces the number of times the sheet rolls are replaced, thereby allowing a labeling apparatus to operate efficiently. 
     Usually, as shown in (a) and (b) of  FIG. 17 , such a reel includes: a cylindrical core member  51 , to which a sheet roll is to be fit; and a flange member  52 , which can be detachably attached to one end of the core member  51 . Thus, as described above, to stack reels  50  one on another in a multi-tiered manner and continuously feed label forming base materials, a paper tube is removed from each sheet roll and an inner end portion (a winding start portion) of the sheet roll is pulled, out from the sheet roll. Thereafter, the sheet roll without the paper tube, or the sheet roll to which the removed paper tube has been attached again, is set on the core member  51  of the reel  50 . Then, as shown in  FIG. 18 , while a plurality of reels  50  on which the sheet rolls have thus been set are stacked in a multi-tiered manner, an outer end portion (a winding end portion) or a pulled out inner end portion (a winding start portion) of a sheet roll R set on the reel  50  in the upper tier is connected to a pulled out inner end portion (a winding start portion) or an outer end portion (a winding end portion) of a sheet roll R set on the reel  50  in the lower tier adjacent to the upper tier. Thus, the sheet rolls R set on the plurality of reels  50  are connected to each other. 
     Such a reel  50  has the following advantage. Usually, the outer diameter of the core member  51  is set to be smaller than the inner diameter of the paper tube of the sheet roll R. Thus, it is possible to rotate the sheet roll R set on the core member  51  of the reel  50 , relative to the reel  50 , and when the sheet roll R is connected to the label forming base material of the sheet roll R set on the reel  50  in the lower tier, it is possible to adjust the connection position while rotating the sheet roll R relative to the reel  50 . This achieves an excellent operability for connecting the label forming base materials. 
     As described above, however, in the case where, while the reels  50  on which the sheet rolls R are set are stacked one on another in a multi-tiered manner with some allowance between each core member  51  and the paper tube, the label forming base materials of the adjacent sheet rolls R are connected to each other and the label forming base materials are sequentially fed from the sheet roll R set on the reel  50  in the upper tier, the reels  50  stacked one on another in a multi-tiered manner rotate in an integrated manner. The label forming base material, however, of the sheet roll R from which the label forming base material is being fed is pulled by a downstream apparatus such as a labeler. Thus, the sheet roll R rotates relative to the reel  50 . This causes a shift in the connection position of the label forming base materials relative to the sheet roll R set on the reel  50  in the lower tier adjacent to the upper tier. In the connection portion, the label forming base materials are pulled and twisted. 
     In response, hitherto, as shown in  FIG. 19 , non-slip members  53  formed of a material such as a rubber are bonded to the surface, of a flange member  52 , that is in contact with the sheet roll R, thereby increasing the frictional force of the sheet roll R against the reel  50 . This prevents unnecessary rotation of the sheet roll R relative to the reel  50 . 
     CITATION LIST 
     Patent Literature 
     [PTL 1] Japanese Patent No. 3611462 
     SUMMARY OF THE INVENTION 
     Problems to be Solved by the Invention 
     Incidentally, as described above, if the non-slip members  53  formed of a material such as a rubber are bonded to the surface, of the flange member  52 , that is in contact with the sheet roll R, it is true that it is possible to prevent unnecessary rotation of the sheet roll R relative to the reel  50 . A new problem, however, may arise where, when the sheet roll R from which the label forming base material is being fed is switched from the sheet roll R in the upper tier to the sheet roll R in the lower tier, the winding end portion of the sheet roll R in the upper tier becomes caught by the non-slip members  53 , and therefore, the label forming base material is not smoothly fed. Thus, the connection portion of the label forming base materials becomes twisted. 
     Therefore, it is an objective of the invention to provide an elongated sheet feeding reel capable of preventing unnecessary rotation of a sheet roll while an elongated sheet is being fed, and also capable of, even when the sheet roll from which the elongated sheet is being fed is switched to another sheet roll adjacent to the sheet roll, smoothly feeding the elongated sheet. 
     Solution to the Problems 
     To achieve the above objective, the invention of claim  1  provides an elongated sheet feeding reel for stacking sheet rolls, each of which has been formed by winding an elongated sheet around a tubular support, one on another in a multi-tiered manner, and for continuously feeding the elongated sheets from the respective sheet rolls, the elongated sheet feeding reel comprising: a core member configured to be fittingly inserted into a tubular support of a sheet roll; and a disk-shaped flange member configured to be detachably attached to at least one end of the core member. The core member has a pressing member configured to press an inner peripheral surface of the tubular support of the sheet roll radially outward. 
     Further, the invention of claim  2  is an elongated sheet feeding reel for stacking sheet rolls, each of which is formed by winding an elongated sheet without using a tubular support, and has an inner circular portion, one on another in a multi-tiered manner, and for continuously feeding the elongated sheets from the respective sheet rolls, the elongated sheet feeding reel comprising: a generally cylindrical secondary core member configured to be fittingly inserted into an inner circular portion of a sheet roll; a primary core member configured to be fittingly attached to an inside of the cylindrical secondary core member fittingly inserted in the sheet roll; and a disk-shaped flange member configured to be detachably attached to at least one end of the primary core member. The secondary core member is divided circumferentially so as to be able to expand a diameter thereof, the primary core member has a pressing member configured to press radially outward an inner peripheral surface of the secondary core member fittingly inserted in the inner circular portion of the sheet roll, and the elongated sheet feeding reel comprises a rotation stopping member for stopping rotation of the primary core member and the secondary core member relative to each other. 
     Further, the invention of claim  3  is an elongated sheet feeding reel for stacking sheet rolls, each of which is formed by winding an elongated sheet without using a tubular support and has an inner circular portion, one on another in a multi-tiered manner, and for continuously feeding the elongated sheets from the respective sheet rolls, the elongated sheet feeding reel comprising: a generally cylindrical secondary core member configured to be fittingly inserted into an inner circular portion of a sheet roll; a primary core member configured to be fittingly attached to an inside of the cylindrical secondary core member fittingly inserted in the sheet roll; and a disk-shaped flange member configured to be detachably attached to at least one end of the primary core member. The secondary core member is divided circumferentially so as to be able to expand a diameter thereof, and has a pressing member configured to press radially inward an outer peripheral surface of the primary core member attached to the secondary core member, and the elongated sheet feeding reel comprises a rotation stopping member for stopping rotation of the primary core member and the secondary core member relative to each other. 
     Advantageous Effects of the Invention 
     As described above, in the elongated sheet feeding reel according to the invention of claim  1 , a core member, which is to be detachably attached to a flange member, has a pressing member, which is to press an inner peripheral surface of a tubular support of a sheet roll radially outward. Thus, with the sheet roll placed on the disk-shaped flange member to which the core member is not attached, the operation of connecting the elongated sheets is performed. After the connecting operation has been completed, the core member is fittingly inserted into the tubular support of the sheet roll and attached to the flange member. Consequently, the pressing member presses the inner peripheral surface of the tubular support of the sheet roll radially outward, and therefore, the sheet roll is held by the feeding reel. 
     As described above, the use of the elongated sheet feeding reel makes it possible to rotate the sheet roll on the flange member during the operation of connecting the elongated sheets. This achieves an excellent operability for connecting the elongated sheet to the sheet roll set on the feeding reel in the lower tier. 
     Further, after the core member has been attached to the flange member, the sheet roll is integrated into the feeding reel. Thus, when the elongated sheet is being fed, the sheet roll from which the elongated sheet is being fed does not rotate relative to the feeding reel. Further, the elongated sheet does not become twisted due to a positional shift in the connection portion of the elongated sheet. 
     Further, in the elongated sheet feeding reel, unlike a conventional feeding reel, non-slip members formed of a material such as a rubber are not bonded to the surface, of the flange member, that is in contact with the sheet roll. Thus, when the sheet roll from which the elongated sheet is being fed is switched to another sheet roll adjacent to the sheet roll, the elongated sheet does not become twisted as a result of the winding end portion of the sheet roll, from which the elongated sheet is being fed, becoming caught by the flange member. This makes it possible to smoothly feed the elongated sheet. 
     Further, the elongated sheet feeding reel according to the invention of claim  2  includes: a generally cylindrical secondary core member, which is to be fittingly inserted into an inner circular portion of a sheet roll and is divided circumferentially so as to be able to expand a diameter thereof; a primary core member, which is to be fittingly inserted into the cylindrical secondary core member fittingly inserted in the sheet roll; and a disk-shaped flange member, which is to be detachably attached to at least one end of the primary core member. The primary core member has a pressing member, which is to press radially outward an inner peripheral surface of the secondary core member fittingly inserted in the inner circular portion of the sheet roll. Thus, in the state where a sheet roll not having a tubular support such as a paper tube in advance, or a sheet roll from which a tubular support such as a paper tube has been removed to pull out the winding end portion of the elongated sheet, is placed on the disk-shaped flange member to which the primary core member is not attached, the secondary core member is fittingly inserted into the inner circular portion of the sheet roll. Subsequently, the operation of connecting the elongated sheets is performed. After the connecting operation has been completed, the primary core member is fittingly inserted into the secondary core member and attached to the flange member. Consequently, the pressing member presses an inner peripheral surface of a tubular support of the sheet roll radially outward through the secondary core member. Thus, the feeding reel can certainly hold also the sheet roll not having a tubular support such as a paper tube in advance, or the sheet roll from which a tubular support such as a paper tube has been removed to pull out the winding end portion of the elongated sheet. 
     As described above, similarly to the elongated sheet feeding reel according to the invention of claim  1 , the use of the elongated sheet feeding reel makes it possible to rotate the sheet roll on the flange member during the operation of connecting the elongated sheets. This achieves an excellent operability for connecting the elongated sheet to the sheet roll set on the feeding reel in the lower tier. After the primary core member has been attached to the flange member, the sheet roll is integrated into the feeding reel. Thus, when the elongated sheet is being fed, the sheet roll from which the elongated sheet is being fed does not rotate relative to the feeding reel. Further, the elongated sheet does not become twisted due to a positional shift in the connection portion of the elongated sheet. 
     Particularly, the elongated sheet feeding reel includes rotation stopping means for stopping the rotation of the secondary core member and the primary core member relative to each other. Thus, the secondary core member does not rotate relative to the primary core member, and therefore, the primary core member certainly stops the rotation of the sheet roll. 
     Further, in the elongated sheet feeding reel according to the invention of claim  3 , a secondary core member has a pressing member, which is to press an outer peripheral surface of a primary core member radially inward, and the elongated sheet feeding reel includes rotation stopping means for stopping the rotation of the secondary core member and the primary core member relative to each other. Thus, by a method similar to that of the elongated sheet feeding reel according to the invention of claim  2 , it is possible to set a sheet roll not having a tubular support such as a paper tube in advance, or a sheet roll from which a tubular support such as a paper tube has been removed to pull out the winding end portion of the elongated sheet. This makes it possible to obtain an operational effect similar to that of the elongated sheet feeding reel according to the invention of claim  2 . 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In  FIG. 1 , (a) is a plan view of an embodiment of a feeding reel according to the invention; and (b) is a side view of the feeding reel. 
       In  FIG. 2 , (a) is a plan view of a flange member included in the feeding reel; (b) is a cross-sectional view along a line X-X in (a); and (c) is a bottom view of a connection portion included in the flange member. 
       In  FIG. 3 , (a) is a plan view of a secondary core member included in the feeding reel; (b) is a side view of the secondary core member; and (c) is a cross-sectional view along a line Y-Y in (a). 
       In  FIG. 4 , (a) is a plan view of a primary core member included in the feeding reel; (b) is a side view of the primary core member; and (c) is a cross-sectional view along a line Z-Z in (a). 
       In  FIG. 5 , (a) is a plan view of a main body portion included in a stopper member of the feeding reel; and (b) is a cross-sectional view of the main body portion. 
       In  FIG. 6 , (a) is a plan view of each of support plates included in the stopper member; and (b) is a cross-sectional view of the support plate. 
       In  FIG. 7 , (a) is an enlarged plan view of an attachment portion of the stopper member; and (b) is a cross-sectional view along a line V-V in (a). 
       In  FIG. 8 , (a) is a plan view of the state where feeding reels on which sheet rolls are set are stacked one on another in a multi-tiered manner on a sheet roll mounting platform truck; and (b) is a side view of the same state. 
       In  FIG. 9 , (a) to (c) are process diagrams illustrating a method for setting a sheet roll using the feeding reel. 
       In  FIG. 10 , (a) and (b) are process diagrams illustrating the method for setting a sheet roll using the feeding reel. 
       In  FIG. 11 , (a) and (b) are process diagrams illustrating the method for setting a sheet roll using the feeding reel. 
         FIG. 12  is a perspective view of the state of use of feeding reels. 
         FIG. 13  is a partially enlarged cross-sectional view of another embodiment. 
       In  FIG. 14 , (a) and (b) are process diagrams illustrating a method for setting a sheet roll to which a tubular support such as a paper tube is attached. 
         FIG. 15  is a side view of a variation of a primary core member. 
         FIG. 16  is a plan view of a variation of rotation stopping means. 
       In  FIG. 17 , (a) is a plan view of a conventional feeding reel; and (b) is a side view of the conventional feeding reel. 
         FIG. 18  is a side view of the state where conventional feeding reels on which sheet rolls are set are stacked one on another in a multi-tiered manner. 
         FIG. 19  is a plan view of an example improvement of a conventional feeding reel. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     With reference to the drawings, embodiments are described below. As shown in (a) and (b) of  FIG. 1 , a feeding reel  1  is used to stack sheet rolls R, each of which has been formed by winding an elongated sheet into a roll and from each of which a tubular support such as a paper tube has been removed, one on another in a multi-tiered manner, and to continuously feed the elongated sheets from the respective sheet rolls R. The feeding reel  1  includes: a disk-shaped flange member  10 , on which a sheet roll R is to be placed; a generally cylindrical secondary core member  20 , which is to be fittingly inserted into an inner circular portion of the sheet roll R and is divided circumferentially so as to be able to expand the diameter thereof; a primary core member  30 , which is to be fittingly attached to the inside of the generally cylindrical secondary core member  20  fittingly inserted in the sheet roll R; and a stopper member  40 , which is attached to the periphery of the flange member  10  and overhangs radially outward. The primary core member  30  can be detachably attached to the disk-shaped flange member  10 . 
     As shown in (a) and (b) of  FIG. 1  and (a) to (c) of  FIG. 2 , the flange member  10  includes: a main body portion  11  having a thin disk shape with a large diameter; and a connection portion  15  having a thick disk shape with a small diameter and fixed to a central portion of the lower surface of the main body portion  11 . The main body portion  11  and the connection portion  15  are formed of a synthetic resin. 
     In the main body portion  11 , a central hole  12  is formed, and three penetrating attachment holes  13  for attaching the primary core member  30  are formed equiangularly on a concentric circle. On peripheral portions of both the upper and lower surfaces of the main body portion  11 , annular grooves  14  for supporting the stopper member  40  such that the stopper member  40  is circumferentially movable are formed along the outer periphery of the main body portion  11 . 
     In the connection portion  15 , a central hole  16  is formed that has a diameter slightly smaller than that of the central hole  12  formed in the main body portion  11 . On the upper surface of the connection portion  15 , which is to overlap the lower surface of the main body portion  11 , three closed-end attachment holes  17  for attaching the primary core member  30  are formed equiangularly (120 degrees) so as to coincide with the three penetrating attachment holes  13  formed in the main body portion  11 . On the lower surface of the connection portion  15 , three closed-end attachment holes  18  for attaching the primary core member  30  of the feeding reel  1  in the lower tier when feeding reels  1  have been stacked in a tiered manner are formed equiangularly with a positional shift of 60 degrees from the closed-end attachment holes  17 . 
     As shown in (a) and (b) of  FIG. 1  and (a) to (c) of  FIG. 3 , the secondary core member  20  includes: a main body portion  21  formed of a thin metal plate having spring properties and formed to be generally cylindrical; and a non-slip belt  22  bonded to the inner peripheral surface of the main body portion  21  except for an upper end portion of the main body portion  21 . The main body portion  21  is not a perfectly cylindrical body, and is divided circumferentially so as to be able to expand the diameter thereof. It should be noted that as the non-slip belt  22 , a belt manufactured by Habasit (HAT-8P) and having its surface formed of NBR (nitrile rubber) is used. 
     The primary core member  30  is formed of a metal. As shown in (a) and (b) of  FIG. 1  and (a) to (c) of  FIG. 4 , the primary core member  30  includes: a cylindrical base member  31  having a diameter smaller than that of the secondary core member  20 ; three cylindrical connection members  32 , which are fixed equiangularly (120 degrees) in the circumferential direction of the base member  31  on the outer peripheral surface of the base member  31  and extend in the up-down direction of the base member  31 ; and three leaf springs  33 , each of which is fixed between adjacent two of the connection members  32  on the outer peripheral surface of the base member  31 . 
     An upper end portion of each connection member  32  protrudes upward from the upper end edge of the base member  31 , and a lower end portion of the connection member  32  protrudes downward from the lower end edge of the base member  31 . It is possible to connect the flange member  10  to each of an upper end portion and a lower end portion of the primary core member  30  by fittingly inserting these protruding portions into the closed-end attachment hole  18  of the flange member  10 , or the penetrating attachment hole  13  and the closed-end attachment hole  17  of the flange member  10 . 
     Each leaf spring  33  is fixed at a lower end portion thereof to a lower end portion of the base member  31  and stands obliquely upward so that the upper end side of the leaf spring  33  overhangs radially outward from the base member  31 . It should be noted that in a no-load state, the diameter of a concentric circle passing through an upper end portion of each leaf spring  33  is larger than that of the secondary core member  20  indicated by a dashed-dotted line in (a) of  FIG. 4 . In the state where the primary core member  30  is fittingly attached to the inside of the secondary core member  20 , the upper end portion of the leaf spring  33  elastically deforms radially inward. Thus, a spring force acts on the secondary core member  20  so as to bias the secondary core member  20  radially outward. 
     As shown in  FIGS. 5 to 7 , the stopper member  40  includes a main body portion  41  and support plates  42 . When, with a plurality of feeding reels  1  stacked one on another in a multi-tiered manner, a winding end portion or a winding start portion of the elongated sheet on the feeding reel  1  in the upper tier has been connected to a winding start portion or a winding end portion of the elongated sheet on the feeding reel  1  in the lower tier adjacent to the upper tier, the main body portion  41  hooks the connection portion on the flange member  10  in the circumferential direction of the flange member  10 . The support plates  42  attach the main body portion  41  to the flange member  10  such that the main body portion  41  is movable along the periphery of the flange member  10 . 
     As shown in (a) and (b) of  FIG. 5 , the main body portion  41  is formed of a metal plate having an approximate isosceles right triangular shape and a thickness slightly larger than that of the flange member  10 . On the upper and lower surfaces of the main body portion  41 , depressed portions  41   a  are formed, into which the support plates  42  described later are to fit. In the formation areas of the depressed portions  41   a , screw holes  41   b  are formed to penetrate the main body portion  41  in the up-down direction thereof in order to fix the support plates  42 . 
     Further, in the main body portion  41 , a portion  41   c  corresponding to the base of the approximate isosceles right triangle is formed to have an arcuate shape with the same radius of curvature as that of the flange member  10  so as to extend along the outer peripheral surface of the flange member  10 . Upper and lower corner portions  41   d  corresponding to the hypotenuses of the approximate isosceles right triangle are portions with which the elongated sheet comes into contact, and therefore are rounded so as not to damage the elongated sheet in contact therewith. 
     As shown in (a) and (b) of  FIG. 6 , each support plate  42  is formed of a thin metal plate having an extremity portion formed to have an approximate isosceles right triangular shape. In the approximate isosceles right triangular portion at the extremity, screw insertion holes  42   a  are formed to correspond to the screw holes  41   b  of the main body portion  41 . Thus, as shown in (a) and (b) of  FIG. 7 , the extremity portions having the approximate isosceles right triangular shapes are fit into and screwed to the upper and lower depressed portions  41   a  of the main body portion  41 , thereby fixing the pair of support plates  42  while sandwiching the main body portion  41  from above and below. In this state, back end portions of the support plates  42  overhang backward from the main body portion  41 . 
     Further, in the back end portion of each support plate  42 , a tongue-shaped piece  42   c  is formed by a U-shaped cut  42   b . The tongue-shaped piece  42   c  is bent so that an extremity portion of the tongue-shaped piece  42   c  slightly protrudes toward the inner surface side of the support plate  42  attached to the main body portion  41 . As shown in (b) of  FIG. 7 , the bent portions  42   d  of the tongue-shaped pieces  42   c  are designed to fit into the annular grooves  14  formed on both the upper and lower surfaces of the flange member  10  described above. The bent portions  42   d  of the tongue-shaped pieces  42   c  fit into the annular grooves  14 , whereby the main body portion  41  is positioned in the radial direction of the flange member  10 , and the main body portion  41  is supported by the flange member  10  such that the main body portion  41  is movable around the outer periphery of the flange member  10  along the annular grooves  14 . 
     As shown in (a) and (b) of  FIG. 8 , feeding reels  1  configured as described above are stacked one on another in a multi-tiered manner on a rotary base  2   a  of a sheet roll mounting platform truck  2 , while sheet rolls R, each of which has been formed by winding an elongated sheet into a roll and from each of which a tubular support such as a paper tube has been removed, are set on the respective feeding reels  1 . When the feeding reels  1  are stacked in a tiered manner, an inner end portion (the winding start portion) pulled out from the sheet roll R set on the feeding reel  1  in the upper tier is connected to an outer end portion (the winding end portion) of the sheet roll R set on the feeding reel  1  in the lower tier adjacent to the upper tier, and such connections are sequentially made. With reference to the drawings, a method for setting a sheet roll R is described below. 
     First, the flange member  10  is attached to the rotary base  2   a  of the sheet roll mounting platform truck  2 . As shown in (a) of  FIG. 9 , a sheet roll R from which a tubular support such as a paper tube has been removed is placed on the upper surface of the flange member  10  at a predetermined position. Thereafter, as shown in (b) of  FIG. 9 , the secondary core member  20  is fittingly inserted into the inner circular portion of the sheet roll R. It should be noted that (a) to (c) of  FIG. 9  omit the rotary base  2   a  of the sheet roll mounting platform truck  2 . 
     Subsequently, the primary core member  30  is fittingly inserted into the secondary core member  20 , and the lower end portions of the three connection members  32  are fit into the penetrating attachment holes  13  and the closed-end attachment holes  17  of the flange member  10 , thereby connecting the flange member  10  to the primary core member  30 . At this time, the leaf springs  33  of the primary core member  30  press the inner peripheral surface of the secondary core member  20  radially outward. Thus, the resulting pressing force expands the diameter of the secondary core member  20 , thereby pressing the inner peripheral surface of the sheet roll R. Consequently, the sheet roll R is held by the primary core member  30  through the secondary core member  20 . 
     It should be noted that as described above, the non-slip belt  22  having its surface formed of NBR (nitrile rubber) is bonded to the inner peripheral surface of the secondary core member  20 . This prevents the secondary core member  20  from slipping circumferentially relative to the primary core member  30 . Thus, the primary core member  30  certainly stops the rotation of the sheet roll R. 
     When the setting of the lowermost sheet roll R has thus been completed, as shown in (a) of  FIG. 10 , the three closed-end attachment holes  18  of another flange member  10  are fit to the upper end portions of the three connection members  32  of the primary core member  30 , thereby attaching the flange member  10  to the lowermost primary core member  30 . Then, as shown in (b) of  FIG. 10 , a sheet roll R from which a tubular support such as a paper tube has been removed is placed on the upper surface of the flange member  10  at a predetermined position. It should be noted that, in placing the sheet roll R on the flange member  10 , it is necessary in advance to pull out the winding start portion of the sheet roll R such that the winding start portion is placed outside the sheet roll R by a predetermined length, place the pulled out portion along the upper surface of the flange member  10  in the second tier from the bottom, and place an extremity portion of the pulled out portion outside the flange member  10 . 
     Subsequently, as shown in (a) of  FIG. 11 , the secondary core member  20  is fittingly inserted into the inner circular portion of the sheet roll R. In this state, the winding end portion of the sheet roll R in the lower tier is connected to the already pulled out winding start portion of the sheet roll R in the upper tier. In this state, the sheet roll R is merely placed on the flange member  10 , which makes it possible to easily adjust the connection position by circumferentially rotating the sheet roll R. This achieves an excellent operability for connection. Further, at this time, the stopper member  40  attached to the flange member  10  may be evacuated in advance to a position away from the connection portion of the elongated sheets by sliding the stopper member  40  in the circumferential direction of the flange member  10 . This prevents the interference of the stopper member  40 , which makes it possible to smoothly perform the operation of connecting the elongated sheets. 
     When the connection of the elongated sheets of the sheet rolls R adjacent to each other, one above the other, has thus been completed, the stopper member  40  is moved to the connection portion of the elongated sheets by sliding the stopper member  40  in the circumferential direction of the flange member  10 . Then, as shown in  FIG. 12 , a connection portion Rc of the elongated sheets is hooked on the stopper member  40  by pressing the stopper member  40  against the connection portion Rc of the elongated sheets such that a predetermined tension is imparted to the connection portion Rc of the elongated sheets. 
     Subsequently, the primary core member  30  is fittingly inserted into the secondary core member  20 , and the lower end portions of the three connection members  32  are fit into the penetrating attachment holes  13  and the closed-end attachment holes  17  of the flange member  10  in the second tier from the bottom, thereby connecting the flange member  10  to the primary core member  30 . Consequently, the sheet roll R is held by the primary core member  30  through the secondary core member  20  similarly to the sheet roll R in the first tier from the bottom. Thereafter, similarly, feeding reels  1  are stacked in a tiered manner, while sheet rolls R are set on the respective feeding reels  1 . 
     When the stacking of the sheet rolls R in a tiered manner has thus been completed, the group of the feeding reels stacked in a tiered manner are integrated together by fixing means, not shown in the figures, pressing down the group of the feeding reels against the rotary base  2   a  from above. Then, an elongated sheet S starts to be fed from the sheet roll R set on the uppermost feeding reel  1 . 
     As described above, the use of the elongated sheet feeding reel  1  makes it possible to rotate the sheet roll R on the flange member  10  during the operation of connecting the elongated sheets. This achieves an excellent operability for connecting the elongated sheet to the sheet roll R set on the feeding reel  1  in the lower tier. After the primary core member  30  has been attached to the flange member  10 , the sheet roll R is integrated into the feeding reel  1 . Thus, when the elongated sheet is being fed, the sheet roll R from which the elongated sheet is being fed does not rotate relative to the feeding reel  1 . Further, the elongated sheet does not become twisted due to a positional shift in the connection portion of the elongated sheet. 
     Particularly, in the elongated sheet feeding reel  1 , the non-slip belt  22 , which increases the frictional force between the secondary core member  20  and the leaf springs  33 , is bonded to the inner peripheral surface of the secondary core member  20 . This makes it difficult for the secondary core member  20  to slip circumferentially relative to the primary core member  30 . Thus, it is possible to certainly achieve the function of stopping the rotation of the sheet roll R relative to the feeding reel  1 . 
     Further, in the elongated sheet feeding reel  1 , unlike a conventional feeding reel, non-slip members formed of a material such as a rubber are not bonded to the upper surface of the flange member  10 . Thus, when the sheet roll R from which the elongated sheet is being fed is switched from the sheet roll R in the upper tier to the sheet roll R in the lower tier, the elongated sheet does not become twisted as a result of the winding end portion of the sheet roll R in the upper tier becoming caught by the flange member. This makes it possible to always smoothly feed the elongated sheet. 
     It should be noted that in the above embodiment, the leaf springs  33  are fixed to the base member  31  of the primary core member  30 . The invention, however, is not limited to this. For example, as in a feeding reel  1 A shown in  FIG. 13 , leaf springs  23  that overhang radially inward may be fixed to the inner peripheral surface of a main body portion  21  of a secondary core member  20 A. In this case, upper end portions of the leaf springs  23  need to be fixed to the secondary core member  20 A so that the extremity side of each leaf spring  23  is directed downward. Thus, a non-slip belt  34  is bonded to the outer peripheral surface of a base member  31  of a primary core member  30 A. It should be noted that it is preferable that each leaf spring  23  should be fixed to an approximately middle portion, in the height direction, of the main body portion  21  of the secondary core member  20 A in order to uniformly press the inner peripheral surface of the sheet roll R. 
     Further, in the above embodiments, the non-slip belt  22  is bonded to the inner peripheral surface of the secondary core member  20 , or the non-slip belt  34  is bonded to the outer peripheral surface of the base member  31  of the primary core member  30 A. The invention, however, is not limited to this, and can employ a configuration where non-slip members cover the leaf springs  33  or the leaf springs  23 . 
     Further, in the above embodiments, the descriptions are given of the feeding reels  1  and  1 A, which are used to stack the sheet rolls R, from each of which a tubular support such as a paper tube has been removed, in a tiered manner. Alternatively, for example, a tubular support such as a paper tube may be once removed from each sheet roll R and the winding start portion of the sheet roll R may be pulled out, and thereafter, the sheet rolls R, to each of which the tubular support such as a paper tube has been attached, may be stacked in a tiered manner again. In this case, it is not necessary to use the secondary core member  20 . As shown in (b) of  FIG. 14 , the use of a feeding reel  1 B including a flange member  10  and a primary core member  30  makes it possible to certainly stop the rotation of the sheet roll R relative to the feeding reel  1 B. Particularly, if non-slip members cover the leaf springs  33 , the function of stopping the rotation of the sheet roll relative to the feeding reel  1 B is further improved. 
     In this case, the sheet rolls R may be set in the following manner. As shown in (a) of  FIG. 14 , with the winding start portion pulled out in advance (although the winding start portion of the lowermost sheet roll does not need to be pulled out in advance), the sheet roll R to which a tubular support PH such as a paper tube is attached is placed on the flange member  10  at a predetermined position. Thereafter, the winding end portion of the sheet roll R in the lower tier is connected to the winding start portion of the already pulled out sheet roll R in the upper tier. Thereafter, as shown in (b) of  FIG. 14 , the primary core member  30  is fittingly inserted into the tubular support PH of the sheet roll R, and the lower end portions of the three connection members  32  are fit into the penetrating attachment holes  13  and the closed-end attachment holes  17  of the flange member  10  in the second tier from the bottom, thereby connecting the flange member  10  to the primary core member  30 . 
     Further, the above embodiments employ the leaf springs  33  or the leaf springs  23  as pressing members for pressing radially outward the inner peripheral surface of the secondary core member  20  fittingly inserted in the inner circular portion of the sheet roll R from which a tubular support such as a paper tube has been removed, or the inner peripheral surface of a tubular support, such as a paper tube, of the sheet roll R to which the tubular support is attached. The invention, however, is not limited to this. For example, it goes without saying that as shown in  FIG. 15 , as pressing members, a plurality of wedge-shaped members  33   a  can be provided on the outer peripheral surface of a base member  31  included in a primary core member  30 B, the amount of radially outward overhang of each wedge-shaped member  33   a  gradually decreasing toward the lower end side thereof. On the contrary, as pressing members, a plurality of wedge-shaped members can be successively provided on the inner peripheral surface of a secondary core member, the amount of radially inward overhang of each wedge-shaped member gradually decreasing toward the upper end side thereof. Alternatively, it is possible to employ various types of pressing members such as a chuck mechanism that opens by fittingly inserting a primary core member into a secondary core member  20  or a tubular support. 
     Further, the above embodiments employ, as a rotation stopping member for stopping the rotation of the secondary core member  20  and the primary core members  30  relative to each other, or the rotation of the secondary core member  20 A and the primary core member  30 A relative to each other, a configuration where the non-slip belt  22  is bonded to the inner peripheral surface of the secondary core member  20 , or a configuration where the non-slip belt  34  is bonded to the outer peripheral surface of the base member  31  of the primary core member  30 A, or a configuration where the non-slip members cover the leaf springs  33  or the leaf springs  23 . The invention, however, is not limited to this. For example, as shown in  FIG. 16 , it is possible to form a rotation stopping member by providing, on the inner peripheral surface of a secondary core member  20 B, fitting members  22   a , which are to fit the connection members  32  of a primary core member  30 . Alternatively, it may be possible to employ as a rotation stopping member a hook-and-loop fastener, a suction cup, a magnet, or the like for connecting the secondary core member  20  to the primary core members  30 , or for connecting the secondary core member  20 A to the primary core member  30 A. 
     INDUSTRIAL APPLICABILITY 
     The present invention can be used to stack sheet rolls, each of which has been obtained by winding an elongated sheet such as an elongated strip-like label forming base material into a roll, in a tiered manner, and to continuously feed the elongated sheets. 
     DESCRIPTION OF THE REFERENCE CHARACTERS 
     
         
         
           
               1 ,  1 A,  1 B feeding reel 
               2  sheet roll mounting platform truck 
               2   a  rotary base 
               10  flange member 
               11  main body portion 
               12  central hole 
               13  penetrating attachment hole 
               14  annular groove 
               15  connection portion 
               16  central hole 
               17  closed-end attachment hole 
               18  closed-end attachment hole 
               20 ,  20 A,  20 B secondary core member 
               21  main body portion 
               22  non-slip belt 
               22   a  fitting member 
               23  leaf spring 
               30 ,  30 A,  30 B primary core member 
               31  base member 
               32  connection member 
               33  leaf spring 
               33   a  wedge-shaped member 
               34  non-slip belt 
               40  stopper member 
               41  main body portion 
               42  support plate 
               42   c  tongue-shaped piece 
               42   d  curved portion 
             R sheet roll 
             PH tubular support