Patent Publication Number: US-2022219914-A1

Title: Parts supply apparatus

Description:
TECHNICAL FIELD 
     The present application relates to a parts supply apparatus including a stage in which parts are scattered. 
     BACKGROUND ART 
     Some parts supply apparatuses supply parts in a state of being scattered on a stage, as described in Patent Literatures below. 
     PATENT LITERATURE 
     Patent Literature 1: WO2016/030946 
     Patent Literature 2: WO2016/071984 
     BRIEF SUMMARY 
     Technical Problem 
     The present disclosure has an object of suitably supplying parts in a parts supply apparatus that includes a stage. 
     Solution to Problem 
     In order to solve the problems described above, the present specification discloses a parts supply apparatus that includes multiple parts containers configured to accommodate multiple parts, and a stage. The multiple parts containers are attached to the stage, and the multiple parts are scattered on the stage from the multiple parts containers. 
     Advantageous Effects 
     According to the present disclosure, parts from multiple parts containers are scattered on one stage. As a result, many types of parts can be supplied by a parts supply apparatus, and the parts can be suitably supplied. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a perspective view showing a component mounter. 
         FIG. 2  is a perspective view of a component mounting device of the component mounter. 
         FIG. 3  is a perspective view of bulk parts supply apparatus. 
         FIG. 4  is a perspective view of a parts supply unit. 
         FIG. 5  is a transparent view of the parts supply unit. 
         FIG. 6  is a plan view of a main body of the bulk parts supply apparatus. 
         FIG. 7  is a transparent view of the parts supply unit. 
         FIG. 8  is a perspective view of a parts scattering device. 
         FIG. 9  is a perspective view of the parts scattering device. 
         FIG. 10  is a perspective view of a parts holding head. 
         FIG. 11  is a diagram showing a parts receiving member in a state in which electronic circuit parts are received. 
         FIG. 12  is a block diagram showing a control device of the component mounter. 
         FIG. 13  is a diagram showing a parts support member in a state in which lead parts are scattered from the viewpoint from above. 
         FIG. 14  is a perspective view of a wide parts supply unit. 
         FIG. 15  is a perspective view of a parts supplier having two storages. 
         FIG. 16  is a perspective view of the parts supply unit in a state in which the parts supplier is removed. 
         FIG. 17  is a perspective view of the parts supply unit in a state in which the parts supplier having two storages is attached. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Hereinafter, examples of the present disclosure will be described in detail as embodiments of the present disclosure with reference to the drawings. 
     (A) Configuration of Component Mounter 
       FIG. 1  shows component mounter  10 . Component mounter  10  is a device for performing a component mounting work on circuit base material  12 . Component mounter  10  includes device main body  20 , base material conveyance holding device  22 , component mounting device  24 , imaging devices  26  and  28 , parts supply apparatus  30 , bulk parts supply apparatus  32 , and control device (refer to  FIG. 12 )  34 . Examples of circuit base material  12  include a circuit board and a base material having a three-dimensional structure, and examples of the circuit board include a printed wiring board and a printed circuit board. 
     Device main body  20  is configured with frame  40  and beam  42  mounted on frame  40 . Base material conveyance holding device  22  is arranged at a center of frame  40  in the front-rear direction, and includes conveyance device  50  and clamping device  52 . Conveyance device  50  is a device that conveys circuit base material  12 , and clamping device  52  is a device that holds circuit base material  12 . As a result, base material conveyance holding device  22  conveys circuit base material  12  and holds circuit base material  12  fixedly at a predetermined position. In the description below, the conveyance direction of circuit base material  12  is referred to as an X-direction, the horizontal direction perpendicular to that direction is referred to as a Y-direction, and the vertical direction is referred to as a Z-direction. That is, the width direction of component mounter  10  is the X-direction, and the front-rear direction is the Y-direction. 
     Component mounting device  24  is arranged on beam  42 , and includes two work heads  60  and  62  and work head moving device  64 . Each of work heads  60  and  62  include suction nozzle (refer to  FIG. 2 )  66 , and the parts are held by suction nozzle  66 . Further, work head moving device  64  included X-direction moving device  68 , Y-direction moving device  70 , and Z-direction moving device  72 . Two work heads  60  and  62  are integrally moved to any position on frame  40  by X-direction moving device  68  and Y-direction moving device  70 . Further, as shown in  FIG. 2 , each of work heads  60  and  62  are detachably attached to sliders  74  and  76 , and Z-direction moving device  72  individually moves sliders  74  and  76  in the up-down direction. That is, work heads  60  and  62  are individually moved in the up-down direction by Z-direction moving device  72 . 
     Imaging device  26  is attached to slider  74  in a state of facing downward, and is moved to the X-direction, Y-direction, and Z-direction together with the work head  60 . As a result, imaging device  26  images any positions on frame  40 . As shown in  FIG. 1 , imaging device  28  is arranged between base material conveyance holding device  22  on frame  40  and parts supply apparatus  30  in a state of facing upward. As a result, imaging device  28  images the parts held by suction nozzles  66  of work heads  60  and  62 . 
     Parts supply apparatus  30  is arranged at the first end portion of frame  40  in the front-rear direction. Parts supply apparatus  30  includes tray type parts supply apparatus  78  and feeder type parts supply apparatus (not illustrated). Tray type parts supply apparatus  78  is an apparatus that supplies the parts in a state of being placed on the tray. The feeder type parts supply apparatus is a device that supplies the parts by a tape feeder (not illustrated) and a stick feeder (not illustrated). 
     Bulk parts supply apparatus  32  is arranged at the second end portion of frame  40  in the front-rear direction. Bulk parts supply apparatus  32  is an apparatus that aligns the scattered multiple parts and supplies the parts in the aligned state. That is, the bulk parts supply apparatus is an apparatus that aligns the multiple parts in any posture to a predetermined posture, and supplies the parts of the predetermined posture. The configuration of parts supply apparatus  32  will be described in detail below. Examples of the parts supplied by parts supply apparatus  30  and bulk parts supply apparatus  32  include electronic circuit parts, configuration parts of a solar cell, configuration parts of a power module, and the like. Further, the electronic circuit parts include parts with leads and parts without leads. 
     As shown in  FIG. 3 , bulk parts supply apparatus  32  includes main body  80 , parts supply unit  82 , two-dimensional imaging device  84 , and parts delivery device  86 . 
     (a) Parts Supply Unit 
     Parts supply unit  82  includes parts supplier  88 , frame  89 , parts scattering device (refer to  FIG. 4 )  90 , and parts return device (refer to  FIG. 4 )  92 , and parts supplier  88 , frame  89 , is a unit in which parts scattering device  90 , and parts return device  92  are integrally configured. Parts supply unit  82  is detachably assembled to main body  80 . 
     Parts supplier  88  generally has a rectangular parallelepiped box shape, and is arranged so as to extend in the Y-direction as shown in  FIG. 4  and  FIG. 5 . The Y-direction will be described as the front-rear direction of parts supplier  88 , the direction toward the side where parts return device  92  is arranged in parts supply unit  82  is described as a front direction, and the direction toward the side where parts supplier  88  is arranged will be described as a rear direction. 
     Parts supplier  88  has openings at the upper surface and the front surface, and the opening at the upper surface is parts input port  97 , and the opening at the front surface is parts discharge port  98 . In parts supplier  88 , inclined plate  104  is arranged below input port  97 . The inclined plate  104  is arranged so as to be inclined so as to be inclined downward from the end surface on the rear side of parts supplier  88  toward the center direction. 
     Further, as shown in  FIG. 5 , conveyor device  106  is arranged on the front side of inclined plate  104 . Conveyor device  106  is arranged so as to be inclined upward from the front side end portion of inclined plate  104  toward the front direction of parts supplier  88 . Conveyor belt  112  of conveyor device  106  is driven by electromagnetic motor (refer to  FIG. 12 )  116  to rotate counterclockwise in  FIG. 5 . That is, the conveyance direction by conveyor device  106  is the diagonally upward direction from the front end portion of inclined plate  104  toward the front direction. 
     Further, inclined plate  126  is arranged below the front side end portion of conveyor device  106 . Inclined plate  126  is arranged toward the lower side of the conveyor device  106  from the end surface on the front side of parts supplier  88 , and the end portion on the rear side is inclined diagonally downward. Furthermore, inclined plate  128  is also arranged below inclined plate  126 . Inclined plate  128  is inclined toward discharge port  98  of parts supplier  88  from below the center portion of conveyor device  106  such that the front side end portion is positioned below. 
     Further, as shown in  FIG. 4 , frame  89  is configured with a pair of side frames  130  and connecting frame  132 . The pair of side frames  130  are erected so as to be parallel to each other and extend in the Y-direction in a state of facing each other. Connecting frame  132  is bridged to the lower end of a pair of side frames  130 , and the pair of side frames  130  are connected by connecting frame  132 . Frame  89  functions as a housing of parts supply unit  82 , but may be a reinforcing member, an outer shell member, a housing, a cover, a casing, or the like of parts supply unit  82  without functioning as the housing. Further, a distance between the pair of side frames  130  is slightly larger than the width direction dimension of parts supplier  88 , and parts supplier  88  is attached between the pair of side frames  130  in a detachable manner with one-touch in a state of being positioned. Detachable with one-touch means that the operator can reproducibly attach and detach without using a tool or the like. 
     Further, as shown in  FIG. 6 , five slots  140  are formed on the upper surface of main body  80  of bulk parts supply apparatus  32 . Each slot  140  is formed so as to extend in the Y-direction, and five slots  140  are adjacent to each other in the X-direction at the same pitch. These five slots  140  have the same shape. The dimension of each slot  140  in the X-direction, that is, the width direction dimension is smaller than the width dimension of frame  89  of parts supply unit  82 . Further, the dimension of each slot  140  in the Y-direction, that is, the length dimension is slightly larger than the length dimension of frame  89  of parts supply unit  82 . Frame  89  of parts supply unit  82  is bolted on each slot  140 . As a result, parts supply unit  82  can be attached and detached in a state of being positioned in unit mounting area  141  corresponding to each slot by using each slot  140  of main body  80  by the operator using a tool. By the way, slot  140  may be detachable by reproducing parts supply unit  82  in a positioned state, parts supply unit  82  can be attached adjacent to each other by using each slot  140 . 
     In bulk parts supply apparatus  32  shown in  FIG. 3 , five parts supply units  82  are attached to five slots  140 . Therefore, five parts supply units  82  are attached in a state of being adjacent to five slots  140  on the upper surface of main body  80  of bulk parts supply apparatus  32 . The state of being adjacent means a concept including a state in which there is a slight clearance between adjacent parts supply units  82  even if the adjacent parts supply units  82  are not in contact with each other. Although there is a slight clearance, parts supply units  82  are arranged without any gap therebetween. 
     Further, as shown in  FIG. 4  and  FIG. 5 , parts scattering device  90  includes parts support member  150  and parts support member moving device  152 . Parts support member  150  is configured with stage  156  and a pair of side wall portions  158 . Stage  156  has a generally elongated plate shape, and is arranged so as to extend in the front direction from below parts supplier  88  attached between the pair of side frames  130 . Further, the width dimension of stage  156  is approximately the same as the dimension between the pair of side frames  130 , that is, the width dimension of frame  89 , and the rear end portion of stage  156  is positioned between the pair of side frames  130 . The upper surface of stage  156  is generally horizontal, and as shown in  FIG. 5 , the rear end portion is arranged with a state in which there is a slight clearance from the front end portion of inclined plate  128  of parts supplier  88 . Further, as shown in  FIG. 4 , a pair of side wall portions  158  is fixed in a state of being erected on both sides in the longitudinal direction of stage  156 , and the upper end of each side wall portion  158  extends above the upper surface of stage  156 . 
     Further, parts support member moving device  152  slides parts support member  150  in the Y-direction by the operation of air cylinder (refer to  FIG. 12 )  166 . At this time, parts support member  150  moves between a stored state which is a state of being stored below parts supplier  88  (refer to  FIG. 7 ) and an exposed state which is a state of being exposed from below parts supplier  88  (refer to  FIG. 5 ). 
     As shown in  FIG. 8 , parts return device  92  includes parts accommodating container  180  and container swinging device  181 . Parts accommodating container  180  has a generally box-like shape and an arc-shaped bottom surface. The width dimension of the parts accommodating container  180  is approximately the same as the width dimension of stage  156 . Parts accommodating container  180  is held so as to be swingable at the front side end portion of stage  156 , and swings by the operation of container swinging device  181 . At this time, parts accommodating container  180  swings between an accommodating posture in which the opening is facing upward (refer to  FIG. 8 ) and a returning posture in which the opening is facing the upper surface of stage  156  of parts support member  150  (refer to  FIG. 9 ). 
     (b) Two-Dimensional Imaging Device 
     As shown in  FIG. 3 , two-dimensional imaging device  84  includes camera  290  and camera moving device  292 . Camera moving device  292  includes guide rail  296  and slider  298 . Guide rail  296  is fixed to main body  80  above parts supplier  88  so as to extend in the width direction (X-direction) of bulk parts supply apparatus  32 . Slider  298  is slidably attached to guide rail  296  and slides to any position by the operation of electromagnetic motor (refer to  FIG. 12 )  299 . Further, camera  290  is attached to slider  298  in a state of facing downward. 
     (c) Parts Delivery Device 
     As shown in  FIG. 3 , parts delivery device  86  includes parts holding head moving device  300 , parts holding head  302 , and two shuttle devices  304 . 
     Parts holding head moving device  300  includes X-direction moving device  310 , Y-direction moving device  312 , and Z-direction moving device  314 . Y-direction moving device  312  includes Y-slider  316  arranged above parts supply unit  82  so as to extend in the X-direction, and Y-slider  316  moves to any position in the Y-direction by the driving of electromagnetic motor (refer to  FIG. 12 )  319 . X-direction moving device  310  includes X-slider  320  arranged on the side surface of Y-slider  316 , and X-slider  320  moves to any position in the X-direction by the driving of electromagnetic motor (refer to  FIG. 12 )  321 . Z-direction moving device  314  includes Z-slider  322  arranged on the side surface of X-slider  320 , and Z-slider  322  moves to any position in the Z-direction by the driving of electromagnetic motor (refer to  FIG. 12 )  323 . 
     As shown in  FIG. 10 , parts holding head  302  includes head main body  330 , suction nozzle  332 , nozzle pivoting device  334 , and nozzle rotation device  335 . Head main body  330  is formed integrally with Z-slider  322 . Suction nozzle  332  holds the parts and is detachably attached to the lower end portion of holder  340 . Holder  340  is bendable at support shaft  344 , and holder  340  is bent 90 degrees upward by the operation of nozzle pivoting device  334 . Thus, suction nozzle  332  which is attached to the lower end portion of holder  340  is pivoted 90 degrees and is positioned at the pivoted position. That is, suction nozzle  332  pivots between a non-pivoted position and a pivoted position by the operation of nozzle pivoting device  334 . Of course, it is also possible to fix a position with an angle between the non-pivoted position and the pivoted position. Nozzle rotation device  335  also rotates suction nozzle  332  around the axial center. 
     Further, as shown in  FIG. 3 , each of two shuttle devices  304  includes parts carrier  388  and parts carrier moving device  390 , and is fixed to the main body  80  side by side in the lateral direction on the front side of the parts supply unit  82 . Five parts receiving members  392  which are arranged side by side in a row in the lateral direction are attached to parts carrier  388 , and the parts are placed on each parts receiving members  392 . 
     Bulk parts supply apparatus  32  can supply various parts, and various parts receiving member  392  are prepared according to the shape of the parts. Here, as shown in  FIG. 11 , as the electronic circuit parts supplied by bulk parts supply apparatus  32 , parts receiving member  392  corresponding to lead parts  410  having the leads will be described. Lead parts  410  are configured with block-shaped parts main body  412  and two leads  414  protruding from the bottom surface of parts main body  412 . 
     Further, parts receiving member  392  is formed with parts accommodation recess portion  416  having a shape corresponding to lead parts  410 . Parts accommodation recess portion  416  is a recess portion having a stepped shape, and is configured with main body accommodation recess portion  418  that opens on the upper surface of parts receiving member  392  and lead accommodation recess portion  420  that opens on the bottom surface of main body accommodation recess portion  418 . Lead parts  410  are inserted into parts accommodation recess portion  416  in a posture in which leads  414  faces downward. As a result, lead  414  is inserted into lead accommodation recess portion  420 , and lead parts  410  is placed inside of parts accommodation recess portion  416  in a state in which parts main body  412  is inserted into main body accommodation recess portion  418 . 
     Further, as shown in  FIG. 3 , parts carrier moving device  390  is a plate-shaped elongated member, and is arranged on the front side of parts supply unit  82  so as to extend in the front-rear direction. On the upper surface of parts carrier moving device  390 , parts carrier  388  is slidably arranged in the front-rear direction, and slides to any position in the front-rear direction by the driving of electromagnetic motor (refer to  FIG. 12 )  430 . When parts carrier  388  slides in the direction approaching parts supply unit  82 , parts carrier  388  slides up to a parts receiving position positioned within a moving range of parts holding head  302  by parts holding head moving device  300 . On the other hand, when parts carrier  388  slides in the direction away from parts supply unit  82 , parts carrier  388  slides up to a parts supply position positioned within the moving range of work heads  60  and  62  by work head moving device  64 . 
     Further, as shown in  FIG. 12 , control device  34  includes integrated control device  450 , multiple individual control devices (only one is shown in the  FIG. 452 , and image processing device  454 . Integrated control device  450  is configured mainly with a computer, and is connected to base material conveyance holding device  22 , component mounting device  24 , imaging device  26 , imaging device  28 , parts supply apparatus  30 , and bulk parts supply apparatus  32 . As a result, integrated control device  450  integrally controls base material conveyance holding device  22 , component mounting device  24 , imaging device  26 , imaging device  28 , parts supply apparatus  30 , and bulk parts supply apparatus  32 . Multiple individual control devices  452  are configured mainly with a computer, and are provided corresponding with base material conveyance holding device  22 , component mounting device  24 , imaging device  26 , imaging device  28 , parts supply apparatus  30 , and bulk parts supply apparatus  32  (in the figure, only individual control device  452  corresponding to bulk parts supply apparatus  32  is shown). 
     Individual control device  452  of bulk parts supply apparatus  32  is connected to parts supplier  88 , parts scattering device  90 , parts return device  92 , camera moving device  292 , parts holding head moving device  300 , parts holding head  302 , and shuttle device  304 . As a result, individual control device  452  of bulk parts supply apparatus  32  controls parts supplier  88 , parts scattering device  90 , parts return device  92 , camera moving device  292 , parts holding head moving device  300 , parts holding head  302 , and shuttle device  304 . Further, image processing device  454  is connected to two-dimensional imaging device  84 , and processes the image data imaged by two-dimensional imaging device  84 . Image processing device  454  is connected to individual control device  452  of bulk parts supply apparatus  32 . As a result, individual control device  452  of bulk parts supply apparatus  32  acquires the image data imaged by two-dimensional imaging device  84 . 
     (B) Operation of Component Mounter 
     With the configuration described above, component mounter  10  performs component mounting work on circuit base material  12  held in base material conveyance holding device  22 . Specifically, circuit base material  12  is conveyed to the working position by base material conveyance holding device  22 , and is fixedly held by clamping device  52  at that position. Next, imaging device  26  moves above the fixedly held circuit base material  12  and images circuit base material  12 . As a result, information on the error of the holding position of circuit base material  12  can be obtained. Further, parts supply apparatus  30  or bulk parts supply apparatus  32  supplies the parts at a predetermined supply position. The supply of the parts by bulk parts supply apparatus  32  will be described in detail later. One of work heads  60  and  62  moves above supply position of the parts and holds the parts by suction nozzle  66 . Subsequently, work heads  60  and  62  holding the parts are moved above imaging device  28 , and the parts held by suction nozzle  66  are imaged by imaging device  28 . As a result, the information on the error of the holding position of the parts can be obtained. Then, work heads  60  and  62  holding the parts move above circuit base material  12 , and mount the holding parts on circuit base material  12  after correcting the error of the holding position of circuit base material  12 , the error of the holding position of the parts, and the like. 
     (C) Operation of Bulk Parts Supply Apparatus 
     In bulk parts supply apparatus  32 , lead parts  410  are input by the operator from input port  97  of parts supplier  88 , and the input lead parts  410  are supplied in a state of being placed on parts receiving member  392  of parts carrier  388  by the operation of parts supply unit  82  and parts delivery device  86 . 
     Specifically, the operator inputs lead parts  410  from input port  97  of upper surface of parts supplier  88 . At this time, parts support member  150  is moved below parts supplier  88  by the operation of parts support member moving device  152 , and is in the stored state (refer to  FIG. 7 ). When parts support member  150  is in the stored state, parts accommodating container  180  arranged at the end portion of the front side of parts support member  150  is positioned in the front direction of parts supplier  88 , and has a posture (accommodating posture) in which the opening of parts accommodating container  180  is facing upward. 
     Lead parts  410  input from input port  97  of parts supplier  88  falls on inclined plate  104  of parts supplier  88  and rolls down to the lower end of the front side of inclined plate  104 . At this time, lead parts  410  that rolled down to the lower end on the front side of inclined plate  104  are accumulated between the lower end on the front side of inclined plate  104  and the lower end on the rear side of conveyor device  106 . Then, when conveyor device  106  is operated, conveyor belt  112  of conveyor device  106  circulates counterclockwise in  FIG. 7 . At this time, lead parts  410  accumulated between inclined plate  104  and conveyor belt  112  are conveyed diagonally upward by conveyor belt  112 . 
     Then, lead parts  410  conveyed by conveyor belt  112  fall onto inclined plate  126  from the upper end of the front side of conveyor device  106 . Lead parts  410  fell onto inclined plate  126  roll down on inclined plate  126  toward the rear direction and fall on inclined plate  128 . Lead parts  410  fell onto inclined plate  128  roll down toward the front direction and are discharged from discharge port  98  on the front side of parts supplier  88 . 
     As a result, lead parts  410  discharged from discharge port  98  of parts supplier  88  are accommodated inside parts accommodating container  180 . When a predetermined amount of lead parts  410  is discharged from parts supplier  88 , that is, when conveyor device  106  operates in a certain amount, conveyor device  106  stops. Next, parts support member  150  moves from the stored state toward the front direction by the operation of parts support member moving device  152 . 
     Then, at the timing when parts support member  150  moves a predetermined amount toward the exposed state in the front direction from the stored state, container swinging device  181  of parts return device  92  is operated, and parts accommodating container  180  swings. As a result, the posture of parts accommodating container  180  vigorously changes from the posture with the opening facing upward (accommodating posture) to the posture with opening facing stage  156  (returning posture). At this time, lead parts  410  accommodated in parts accommodating container  180  are vigorously released toward stage  156 . As a result, lead parts  410  are scattered on stage  156  from parts accommodating container  180 . The scattering of lead parts  410  is a concept including a state in which lead parts  410  are scattered in an overlapping state and a state in which lead parts  410  are scattered in a separated state without overlapping. 
     When lead parts  410  are scattered on stage  156  of parts support member  150  from parts supplier  88  according to the procedure described above, camera  290  of two-dimensional imaging device  84  moves above parts support member  150  by the operation of camera moving device  292 , and images lead parts  410 . As a result, as shown in  FIG. 13 , two-dimensional image data of each of multiple lead parts  410  scattered on upper surface of parts support member  150  is obtained. Then, for multiple lead parts  410  scattered on the upper surface of parts support member  150 , information such as the position on parts support member  150  and the posture of lead parts  410  are calculated based on the two-dimensional image data. 
     Then, parts holding head  302  is moved above the lead parts by the operation of parts holding head moving device  300  based on the calculated information on the position of lead parts  410  and the like, and the lead parts are picked up and held by suction nozzle  332 . When the lead parts are picked up and held by suction nozzle  332 , suction nozzle  332  is positioned at the non-pivoted position. 
     Then, after lead parts  410  are held by suction nozzle  332 , parts holding head  302  moves above parts carrier  388 . At this time, parts carrier  388  is moved to a parts receiving position by the operation of parts carrier moving device  390 . Further, when parts holding head  302  moves above parts carrier  388 , suction nozzle  332  is pivoted to the pivoted position. Suction nozzle  332  is pivoted by the operation of nozzle rotation device  335  such that leads  414  of lead parts  410  held by suction nozzle  332  at the pivoted position faces downward in the vertical direction. 
     When parts holding head  302  moves above parts carrier  388 , lead parts  410  in a state in which lead  414  faces downward in the vertical direction are inserted into parts accommodation recess portion  416  of parts receiving member  392 . As a result, as shown in  FIG. 11 , lead parts  410  are placed on parts receiving member  392  in a state in which lead  414  faces downward in the vertical direction. 
     Then, when lead parts  410  are placed on parts receiving member  392 , parts carrier  388  moves to a parts supply position by the operation of parts carrier moving device  390 . Since parts carrier  388  moved to the parts supply position is positioned at the moving range of work heads  60  and  62 , in bulk parts supply apparatus  32 , lead parts  410  are supplied to component mounter  10  at this position. In this way, in bulk parts supply apparatus  32 , in component receiving member  392 , lead parts  410  are supplied in a state in which leads  414  faces downward and the upper surface facing the bottom surface to which leads  414  are connected is facing upward. Therefore, suction nozzles  66  of work heads  60  and  62  can appropriately hold lead parts  410 . 
     (D) Exchange of Parts Supply Unit 
     Further, in bulk parts supply apparatus  32 , parts supply unit (refer to  FIG. 14 )  500  which is wider than parts supply unit  82 , is also prepared, and that wide parts supply unit  500  can be attached to slot  140  of main body  80  instead of parts supply unit  82 . 
     Specifically, wide parts supply unit  500  includes parts supplier  502 , frame  504 , parts scattering device  506 , and parts return device  508 , similar to parts supply unit  82 . Since wide parts supply unit  500  is substantially the same as parts supply unit  82  except that the width is wider than that of parts supply unit  82 , the description will be simplified. 
     Parts supplier  502  has a box shape in which parts supplier  88  of parts supply unit  82  is doubled in the width direction. That is, the length dimension and the depth dimension of parts supplier  502  are the same as the length dimension and the depth dimension of parts supplier  88 , and only the width dimension of parts supplier  502  is twice width dimension of parts supplier  88 . Further, inclined plate  510 , conveyor device  512 , inclined plate (not illustrated), and the like are arranged inside parts supplier  502 , as in parts supplier  88 , however, inclined plate  510 , conveyor device  512 , inclined plate, and the like have shapes in which inclined plate  104 , conveyor device  106 , inclined plate  126 , inclined plate  128 , and the like arranged inside parts supplier  88  are doubled in the width direction. 
     Further, frame  504  also has a shape in which frame  89  of parts supply unit  82  is doubled in the width direction, and is configured with a pair of side frames  520  and connecting frame  522  similar to frame  89 . The pair of side frames  520  has substantially the same shape as the pair of side frames  130  of parts supply unit  82 , and connecting frame  522  has a shape in which connecting frame  132  of parts supply unit  82  is doubled in the width direction. With such a structure, parts supplier  502  having a size in which parts supplier  88  is doubled in the width direction is attached in a detachable manner with one-touch between the pair of side frames  520  in a state of being positioned. Further, frame  504  having a shape in which frame  89  of parts supply unit  82  is doubled in the width direction is mounted on two adjacent slots  140  out of five slots  140  formed in main body  80  of bulk parts supply apparatus  32 . That is, when the width of parts supply unit  82  is used as the reference width, in other words, as a unit width, the width of parts supply unit  500  is twice the unit width, and frame  89  of parts supply unit  82  is bolted using one slot  140 , while frame  504  of parts supply unit  500  is bolted using two adjacent slots  140 . Further, positioning may be performed using only one slot without using two slots. 
     Further, similarly to parts scattering device  90  of parts supply unit  82 , parts scattering device  506  also includes parts support member  530  and parts support member moving device  532 , and parts support member  530  is configured with stage  536  and a pair of side wall portions (only one is shown in the  FIG. 538 . Stage  536  has a shape in which stage  156  of parts supply unit  82  is doubled in the width direction, and a pair of side wall portions  538  is erected on both edges of stage  536  in the width direction. Parts support member  530  slides in the front-rear direction by the operation of parts support member moving device  532 . 
     Further, similarly to parts return device  92  of parts supply unit  82 , parts return device  508  also includes parts accommodating container  540  and container swinging device  542 . Parts accommodating container  540  has a shape in which parts accommodating container  180  of parts supply unit  82  is doubled in the width direction, and is swingably arranged at the front end of stage  536 . Then, by the operation of container swinging device  542 , parts accommodating container  540  swings between a posture in which the opening of parts accommodating container  540  is facing upward (accommodating posture) and a posture in which the opening of parts accommodating container  540  is facing stage  536  (returning posture). 
     By attaching parts supply unit  500  having such a structure to bulk parts supply apparatus  32 , it becomes possible to appropriately supply the large parts. That is, parts supply unit  82  has a size of being attached to one slot  140 , the width dimension of stage  156  of parts supply unit  82  is substantially the same as the unit width of parts supply unit  82 . Therefore, for example, when large parts are scattered on stage  156 , the large parts may overlap each other and the parts may not be supplied properly. On the other hand, wide parts supply unit  500  has a size of being attached to two slots  140 , and the width dimension of stage  156  of parts supply unit  82  is approximately twice the unit width of parts supply unit  82 . Therefore, even the large parts will not overlap as long as they are on wide stage  536  and will be scattered appropriately. 
     (E) Exchange of Parts Supplier 
     As described above, wide parts supply unit  500  can appropriately supply large parts. However, when wide parts supply unit  500  is attached to bulk parts supply apparatus  32 , there may be a risk that the types of parts that can be supplied by bulk parts supply apparatus  32  will be reduced. Specifically, in both parts supply unit  82  and wide parts supply unit  500 , one type of parts are usually supplied. That is, usually one type of parts are input to parts suppliers  88  and  502  of parts supply units  82  and  500 , and one type of parts are scattered on stage  156  and stage  536 . On the other hand, while two slots  140  are required to attach wide parts supply unit  500  on bulk parts supply apparatus  32 , only one slot  140  is required to attach parts supply unit  82  to bulk parts supply apparatus  32 . That is, in order to attach one parts supply unit  500  to bulk parts supply apparatus  32 , it is necessary to remove two parts supply units  82  from the bulk parts supply apparatus  32 . At this time, if two parts supply units  82  are attached to bulk parts supply apparatus  32 , it is possible to supply two types of parts by two parts supply unit  82 , but because only one parts supply unit  500  is attached to bulk parts supply apparatus  32 , only one type of parts can be supplied. One type of parts means the parts having the same functions and the same dimensions. However, parts with different dimensions due to defective products such as differences in dimensions within tolerances and missing parts are also included in one type of parts. On the other hand, two types of parts, that is, different types of parts means the parts having different functions and different dimensions. 
     However, by putting two types of parts into parts supplier  502  of wide parts supply unit  500 , two types of parts can be supplied by parts supply unit  500 . In such a case, since two types of parts are scattered on stage  536 , it is necessary to distinguish the two types of parts and hold the parts by parts holding head  302 . That is, when stage  536  in which two types of parts are scattered is imaged by two-dimensional imaging device  84 , the two types of parts are distinguished based on the image data obtained by imaging. Then, the parts are held by parts holding head  302  for each of the distinguished types. As described above, by inputting two types of parts into parts supplier  502  of parts supply unit  500 , two types of parts can be supplied even by parts supply unit  500 . 
     However, when two types of parts are input to parts supplier  502 , specifically, when parts A and parts B are input to parts supplier  502 , there is a risk that parts supply unit  500  cannot supply the required number of parts A and the parts B. That is, for example, when it is desired to supply the parts A from parts supply unit  500  in twice the number of parts B, it is desired that the parts A are scattered on stage  536  in twice the number of parts B. However, the parts A and the parts B are scattered on stage  536  at a time by one conveyor device  512  from parts supplier  502  to which the parts A and the parts B are input, it is not possible to scatter the parts A and the parts B on stage  536  by controlling the number of each parts. Therefore, even though it is desired to supply parts A from parts supply unit  500  in twice the number of parts B, sometimes the parts B may be scattered in stage  536  in twice the number of parts A. In such a case, there is a risk that the parts A cannot be supplied from parts supply unit  500  in twice the number of parts B. 
     In view of such a situation, parts supplier  600  shown in  FIG. 15  is prepared. Parts supplier  600  has a structure capable of individually accommodating two types of parts, and parts supplier  600  can be attached to parts supply unit  500  instead of parts supplier  502 . As a result, it is possible to supply two types of parts from parts supply unit  500  by controlling the number of each parts. 
     Specifically, parts supplier  600  has the same attachment as parts supplier  502 , has substantially the same shape, and has the same external dimensions. Therefore, parts supplier  600  can be attached to parts supply unit  500  instead of parts supplier  502 . Further, partition plate  602  that divides the inside of parts supplier  600  into two equal parts in the width direction is arranged inside parts supplier  600 . Partition plate  602  is arranged inside parts supplier  600  from the rear end to the front end so as to extend in the front-rear direction of parts supplier  600 , and the inside of parts supplier  600  is partitioned into two storages  606   a  and  606   b  by partition plate  602 . Therefore, the inside of each storage  606   a  and  606   b  is approximately half the size of the inside of parts supplier  502 , that is, the same size as the inside of parts supplier  88  of parts supply unit  82 . 
     Therefore, inclined plate  610 , conveyor device  612 , an inclined plate (not illustrated), an inclined plate (not illustrated) having substantially the same dimensions as inclined plate  104 , conveyor device  106 , inclined plate  126 , and inclined plate  128  that are arranged inside parts supplier  88 , are arranged inside each storage  606   a  and  606   b  having substantially the same size as the inside of parts supplier  88  of parts supply unit  82 . Inclined plate  610   a , conveyor device  612   a , an inclined plate (not illustrated), and an inclined plate (not illustrated) are arranged inside storage  606   a , and inclined plate  610   b , conveyor device  612   b , an inclined plate (not illustrated), and an inclined plate (not illustrated) are arranged inside storage  606   b . Further, conveyor device  612   a  and conveyor device  612   b  each individually have an electromagnetic motor (not illustrated), and conveyor device  612   a  and conveyor device  612   b  operate individually. Instead of parts supplier  502  by attaching parts supply unit  500  to parts supplier  600  having such a structure, two types of parts can be supplied, and the number and speed of each type of parts to be supplied can be controlled. 
     Specifically, in parts supply unit  500 , parts supplier  502  is removed from between the pair of side frames  520  of frame  504  as shown in  FIG. 16 . Since parts supplier  502  is positioned in frame  504  by fitting a pin (not illustrated) formed in parts supplier  502  into a fitting hole (not illustrated) formed in frame  504 , by simply lifting parts supplier  502 , parts supplier  502  can be removed from frame  504  with one-touch without using any tools. As shown in  FIG. 17 , parts supplier  600  is attached between a pair of side frame  520  of frame  504 . Since parts supplier  600  has a pin (not illustrated) of the same shape is formed at the same position as parts supplier  502 , by simply fitting the pin into the fitting hole formed in frame  504 , parts supplier  600  can be attached to frame  504  with one-touch. 
     Further, in parts supplier  600  attached to frame  504 , for example, parts A is input to storage  606   a  and parts B is input to storage  606   a . Then, when discharging the parts from parts supplier  600 , the operation of each of conveyor device  612   a  and conveyor device  612   b  is controlled according to the number and the size of each parts A and B to be supplied from parts supply unit  500 . For example, if the parts A and the parts B have approximately similar dimensions and it is desired to supply the parts A from parts supply unit  500  twice the number of parts B, the operation of each conveyor device  612   a  and conveyor device  612   b  is controlled such that the conveyance speed of conveyor device  612   a  becomes twice the conveying speed of conveyor device  612   b . At this time, the parts A approximately twice the number of parts B are discharged from parts supplier  600 , and the parts A approximately twice the number of parts B can be scattered on stage  536 . As a result, the parts A and the parts B, that is, two types of parts can be supplied from parts supply unit  500  by controlling the number of each parts. When checking the two types of parts, identification information for recognizing the type of parts to be supplied may be included in the image data, which is obtained by imaging the receiving member for accommodating the parts supplied from the parts supply apparatus from above by, for example, an imaging device having a predetermined imaging field of view. 
     As described above, in parts supply unit  500  to which the parts supplier  600  is attached, two storages  606   a  and  606   b  are attached to one stage  536 , and parts are individually supplied from two storages  606   a  and  606   b  to one stage  536 . As a result, two types of parts can be supplied from parts supply unit  500  by controlling the number of each parts. Further, since stage  536  is wide, parts can be appropriately scattered on stage  536 . Furthermore, two storages  606   a  and  606   b  are formed by partitioning the inside of parts supplier  600  by partition plate  602 . That is, two storages  606   a  and  606   b  are integrated, by attaching and detaching parts supplier  600  to and from frame  504 , two storages  606   a  and  606   b  are integrally attached and detached to and from parts supply unit  500  in a state of being positioned with each other. As a result, two storages  606   a  and  606   b  can be attached and detached to and from parts supply unit  500  by one attachment and detachment work, and thus, the burden on the operator can be reduced. 
     By the way, slot  140  is an example of a slot. Parts supply unit  500  is an example of a parts supply apparatus. Frame  504  is an example of a frame. Stage  536  is an example of a stage. Storages  606   a  and  606   b  are examples of parts container. 
     The present disclosure is not limited to the embodiment described above, and can be implemented in various embodiments with various modifications and improvements based on the knowledge of those skilled in the art. Specifically, for example, in the embodiment described above, parts supply unit  500  is attached to slot  140  formed in main body  80  of bulk parts supply apparatus  32 , but may be attached to a supply apparatus different from bulk parts supply apparatus  32 , for example, a feeder, a tray type parts supply apparatus  78 , or the like. Further, not limited to the supply apparatus, parts supply unit  500  may be attached to component mounter  10 . Specifically, for example, parts supply unit  500  may be attached to a slot of a feeder to which a tape feeder or the like is attached. That is, parts supply unit  500  may be a supply apparatus that supplies parts to parts holding head  302  of bulk parts supply apparatus  32 , or a supply apparatus that supplies parts to work heads  60  and  62  of component mounter  10 . When the parts supply units of the same width are attached to all the slots of the same pitch included in the parts supply apparatus or the component mounter (work machine) without the gaps, the maximum number of parts supply units that can be attached to the parts supply apparatus or component mounter (work machine) is determined, and the unit width of the parts supply unit is also determined. The width of the unit mounting area corresponding to each slot is slightly wider than the unit width of the parts supply apparatus such an extent that the parts supply apparatus does not interfere with each other. 
     In the embodiment described above, stage  536  and parts supplier  600  are attached to slot  140  via frame  504 , each of stage  536  and parts supplier  600  may be independently attached slot  140 . 
     Further, in the embodiment described above, the parts are scattered on stage  536 , but any surface can be used as long as the parts can be supplied. Specifically, for example, the upper surface of the conveyor belt may function as a stage, or may be a stage in which parts in the parts supplier are aligned and supplied using a pocket type such as a tray or vibration such as a bulk feeder. 
     Further, in the embodiment described above, different types of parts are accommodated in two storages  606   a  and  606   b , but the same types of parts may be accommodated in two storages  606   a  and  606   b . As described above, when the same types of parts are accommodated in two storages  606   a  and  606   b , one type of parts may be supplied from parts supply unit  500  and the order of supplying the parts from each of the storages may be controlled. 
     Further, in the embodiment described above, two storages  606   a  and  606   b  are arranged for one stage  536 , but three or more storages may be arranged for one stage  536 . As a result, it is possible to supply more types of parts in a timely manner by one parts supply unit  500 . 
     Further, in the embodiment described above, the width of parts supply unit  500  is twice the unit width of parts supply unit  82 , but a parts supply unit having a width that is an integral multiple of three or more times the unit width of parts supply unit  82  can be adopted. Further, in parts supply unit  500 , the width of parts supply unit  500  and stage  536  is twice the unit width of parts supply unit  82 , however, only the width of stage  536  may be twice the unit width of parts supply unit  82  or only the width of storage may be twice the unit width of parts supply unit  82 . 
     Further, in the embodiment described above, two storages  606   a  and  606   b  are integrated, and the two storage  606   a  and  606   b  are integrally detachably attached to frame  504 , but the two storages may individually detachably attached to frame  504 . Specifically, for example, two parts supplier  88  may be individually detachably attached to and detached from between a pair of side frames  520 . In this case, the inside of each parts supplier  88  functions as a storage. 
     Further, in the embodiment described above, the present disclosure is applied to lead parts  410 , the present disclosure can be applied to various types of parts. Specifically, for example, the present disclosure can be applied to configuration parts of a solar cell, configuration parts of a power module, electronic circuit parts having no leads, chip-type compact electronic parts, and the like. 
     REFERENCE SIGNS LIST 
       140 : slot,  500 : parts supply unit (parts supply apparatus),  504 : frame,  536 : stage,  606 : storage (parts container)