Patent Publication Number: US-2023146855-A1

Title: Component mounting system and tape scraps collecting device

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This is a continuation of U.S. patent application Ser. No. 17/647,196 filed on Jan. 6, 2022 which is a continuation of U.S. patent application Ser. No. 16/930,458 filed on Jul. 16, 2020 which is a continuation of the PCT International Application No. PCT/JP2019/003293 filed on Jan. 31, 2019, which claims the benefit of foreign priority of Japanese patent applications No. 2018-079725 and No. 2018-079726 both filed on Apr. 18, 2018, the contents all of which are incorporated herein by reference. 
    
    
     BACKGROUND 
     1. Technical Field 
     The present disclosure relates to a component mounting system and a tape scraps collecting device including a component mounting device group in which a plurality of component mounting devices that mount components supplied by a tape feeder on a board are installed while being arranged in a direction of conveying the board. 
     2. Description of the Related Art 
     In a component mounting system, in addition to a component mounting device group in which a plurality of component mounting devices are installed while being arranged on a floor surface in a direction of conveying the board, a solder printer, an inspection machine, a reflow device, and the like are provided. Each component mounting device that configures the component mounting device group mounts components on the board that has been conveyed from the upstream side and conveys the components to the downstream side. There are various types of devices for supplying components, and a tape feeder is known as one of the types. 
     The tape feeder pitch-feeds a carrier tape in which multiple components are accommodated while being arranged in a line and supplies the components to a component supply position. The tape feeder is supported by a feeder cart, and the feeder cart includes a cutter device that cuts the carrier tape after supplying the components, and a duct that discharges scraps by cutting the carrier tape with the cutter device and dropping the generated scraps of carrier tape, are provided. The scraps of carrier tape discharged through the duct are stored in a container provided in the feeder cart. The scraps of carrier tape stored in the container are regularly discarded by an operator who goes around the component mounting device group. In a case where the number of component mounting devices is large and the number of tape feeders provided in each component mounting device is large, the labor for discarding the scraps of carrier tape is enormous. Therefore, it is important from the viewpoint of labor saving to improve the processing of the scraps of carrier tape. 
     Regarding the collection of the scraps of carrier tape, for example, International Publication No. 2015/045018 discloses a configuration in which a waste tape transport device is provided inside a component mounting device. When the plurality of component mounting devices are connected to each other, the waste tape transport devices are adjacent to each other, and the scraps of carrier tape discharged from each component mounting device are carried while being delivered between the waste tape transport devices. Since the scraps of carrier tape generated from each component mounting device are collected in the waste tape transport device of the component mounting device positioned on the most downstream side, the operator may collect the scraps of carrier tape from the component mounting device positioned on the most downstream side without going around each component mounting device, and it is possible to efficiently collect the scraps of carrier tape. 
     SUMMARY 
     According to an aspect of the present disclosure, there is provided a component mounting system including: a component mounting device group in which a plurality of component mounting devices that mount components supplied to a board conveyed in from an upstream side by a tape feeder and convey the board to a downstream side, and cut a carrier tape after supplying the components by a cutter device and discharge scraps of carrier tape, are installed on a floor surface while being arranged in a direction of conveying the board; a main conveyor that is installed along an arrangement direction of the plurality of component mounting devices in a region on the floor surface under the component mounting device group, and conveys the scraps of carrier tape discharged from each of the plurality of component mounting devices; and a scraps storage that is installed outside the region and stores the scraps of carrier tape conveyed by the main conveyor. 
     According to another aspect of the present disclosure, there is provided a tape scraps collecting device that collects scraps from a component mounting device group in which a plurality of component mounting devices that mount components supplied to a board conveyed from an upstream side by a tape feeder and convey the board to a downstream side, and cut a carrier tape after supplying the components by a cutter device and discharge scraps of carrier tape, are installed on a floor surface while being arranged in a direction of conveying the board, the device including: a main conveyor that is installed along an arrangement direction of the plurality of component mounting devices in a region on the floor surface under the component mounting device group, and conveys the scraps of carrier tape discharged from each of the plurality of component mounting devices; and a scraps storage that is installed outside the region and stores the scraps of carrier tape conveyed by the main conveyor. 
     According to the present disclosure, it is possible to inexpensively construct a scraps collecting mechanism that collects the scraps of carrier tape generated from the tape feeder of each component mounting device in one place. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG.  1    is a plan view of a component mounting system according to an embodiment of the present disclosure. 
         FIG.  2    is a perspective view of a part of the component mounting system according to the embodiment of the present disclosure. 
         FIG.  3    is a side view of a component mounting device that configures a component mounting system according to the embodiment of the present disclosure. 
         FIG.  4    is a side view of a lower portion of the component mounting device that configures the component mounting system according to the embodiment of the present disclosure. 
         FIG.  5    is a perspective view of a part of the component mounting system according to the embodiment of the present disclosure. 
         FIG.  6    is a perspective view of a scraps collecting mechanism that configures the component mounting system according to the embodiment of the present disclosure. 
         FIG.  7    is a perspective view of a part of the scraps collecting mechanism according to the embodiment of the present disclosure. 
         FIG.  8    is a view illustrating a state where two conveyor devices that configure a main conveyor of the scraps collecting mechanism according to the embodiment of the present disclosure are connected to each other. 
         FIG.  9    is a perspective view of a part of the scraps collecting mechanism in the embodiment of the present disclosure. 
         FIG.  10 A  is a view illustrating a procedure of installing a sub-conveyor that configures the scraps collecting mechanism according to the embodiment of the present disclosure under a feeder cart. 
         FIG.  10 B  is a view illustrating a procedure of installing the sub-conveyor that configures the scraps collecting mechanism according to the embodiment of the present disclosure under the feeder cart. 
         FIG.  10 C  is a view illustrating a procedure of installing the sub-conveyor that configures the scraps collecting mechanism according to the embodiment of the present disclosure under the feeder cart. 
         FIG.  11    is a side view of a part of the scraps collecting mechanism according to a first modification example of the embodiment of the present disclosure. 
         FIG.  12    is a perspective view of the scraps collecting mechanism according to a second modification example of the embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     In the configuration illustrated in International Publication No. 2015/045018, it is necessary that each component mounting device has a waste tape transport device embedded therein. Therefore, when an attempt is made to construct a scraps collecting mechanism that collects scraps of carrier tape generated from a tape feeder of each component mounting device in one place, there is a problem that it may take a large amount of costs including the design change of the existing component mounting device. 
     An object of the present disclosure is to provide a component mounting system that can inexpensively construct a scraps collecting mechanism that collects scraps of carrier tape generated from a tape feeder of each component mounting device in one place. 
     Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.  FIG.  1    illustrates component mounting system  1  according to an embodiment of the present disclosure. Component mounting system  1  is an apparatus that mounts components on board KB to manufacture mount board JKB, and is installed on the floor surface. Component mounting system  1  includes board supply device  11 , screen printing device  12 , slide conveyor  13 , first relay conveyor  14 , solder inspection device  15 , component mounting device  16 , second relay conveyor  17 , post-mounting inspection device  18 , reflow device  19 , and mount board collecting device  20 , and these devices are arranged in series in this order from the left side when viewed from operator OP. In the present embodiment, the left-right direction (the direction of conveying board KB) viewed from operator OP is the X-axis direction, and the front-rear direction viewed from operator OP is the Y-axis direction. In addition, the up-down direction is the Z-axis direction. 
     In  FIG.  1   , component mounting system  1  has two board conveying paths  1 L extending in the X-axis direction at the front and rear when viewed from operator OP, and the component mounting work on board KB can be performed at the same time in parallel in these two board conveying paths  1 L. Therefore, in the present embodiment, two board supply devices  11 , two screen printing devices  12 , and two mount board collecting devices  20  are arranged in the front-rear direction, and slide conveyor  13 , first relay conveyor  14 , solder inspection device  15 , four component mounting devices  16 , second relay conveyor  17 , post-mounting inspection device  18 , and reflow device  19  respectively have two board conveyors at the front and rear. 
     Board supply device  11  stocks a plurality of boards KB and supplies boards KB one by one to the downstream side. Screen printing device  12  screen-prints solder on board KB supplied from board supply device  11  and conveys the board to the downstream side. Slide conveyor  13  distributes and conveys board KB conveyed from screen printing device  12  to two board conveying paths  1 L. First relay conveyor  14  receives board KB conveyed from slide conveyor  13  and conveys the board to the downstream side. 
     Solder inspection device  15  performs a solder inspection of board KB received from first relay conveyor  14 . In the solder inspection, it is inspected whether or not a predetermined amount of solder is printed at a predetermined position on board KB. Component mounting device  16  mounts components on board KB that has been sent from the upstream side and conveys the board to the downstream side. In the present embodiment, four component mounting devices  16  are connected to each other in series on floor surface FL to configure component mounting device group  16 G (refer to also  FIG.  2   ). The configuration of component mounting device  16  that configures component mounting device group  16 G will be described later. 
     Second relay conveyor  17  receives board KB conveyed from component mounting device  16  positioned on the most downstream side of component mounting device group  16 G by conveyor mechanism  17 C ( FIG.  2   ) and conveys the board to the downstream side. Post-mounting inspection device  18  performs component mounting inspection on board KB received from second relay conveyor  17 . In the component mounting inspection, it is inspected whether or not the component is attached at a predetermined position on board KB in a predetermined direction. Post-mounting inspection device  18  conveys board KB to which the component mounting inspection has been completed to the downstream side. 
     Reflow device  19  performs solder reflow while conveying board KB after the component mounting inspection, which is conveyed from post-mounting inspection device  18 . Accordingly, after the solder on board KB is melted, the solder is cooled and solidified, and each component mounted on board KB by component mounting device group  16 G is fixed to board KB. Reflow device  19  conveys mount board JKB generated in this manner to the downstream side. Mount board collecting device  20  receives, collects, and stocks mount board JKB conveyed from reflow device  19 . 
     As illustrated in  FIG.  3   , component mounting device  16  includes two board conveyors  23  and two mounting heads  24  in a space between base  21  and cover member  22 . Two board conveyors  23  are arranged at the front and rear, and each extends in the X-axis direction (the direction perpendicular to the paper surface of  FIG.  3   ). These two board conveyors  23  configure a part of two board conveying paths  1 L of component mounting system  1 . 
     Each board conveyor  23  receives and conveys board KB that has been sent from the upstream side, and positions the board at a predetermined working position. Two mounting heads  24  are arranged at the front and rear, and each has suction nozzle  25  extending downward. These two mounting heads  24  are moved in the horizontal plane by head moving mechanism  24 K. 
     In  FIGS.  2  and  3   , a plurality of tape feeders  26  are provided while being arranged in the X-axis direction respectively at the front and rear of base  21 . Each tape feeder  26  is supported by feeder cart  27  connected to each of the front and rear of base  21 . By connecting feeder cart  27  to base  21 , the plurality of tape feeders  26  are collectively attached to base  21 . 
     In  FIG.  3   , feeder cart  27  is provided with a plurality of tape reels  28  corresponding to each tape feeder  26 . Carrier tape  29  that accommodates the components therein is wound around each tape reel  28 . Tape feeder  26  supplies component PT to component supply port  26 K by pulling out carrier tape  29  from corresponding tape reel  28  and pitch-feeding the carrier tape. By suctioning component PT supplied to component supply port  26 K by each tape feeder  26  and moving the component by head moving mechanism  24 K, mounting head  24  mounts the component onto board KB positioned at the working position by board conveyor  23 . Board KB on which component PT is mounted is conveyed by board conveyor  23  to the downstream side. The operation of each part of component mounting device  16  is controlled by control device  16 CT included in component mounting device  16 . 
     In this manner, each component mounting device  16  performs a series of component mounting operations in which component PT supplied by tape feeder  26  is mounted on board KB conveyed from the upstream side and is conveyed to the downstream side. By performing the component mounting operation while four component mounting devices  16  that configure component mounting device group  16 G are adjacent to each other and deliver board KB, board KB on which components PT in component mounting device group  16 G have been mounted is conveyed from component mounting device  16  positioned on the most downstream side. 
     In  FIG.  3   , cutter device  31  and duct  32  are provided on each feeder cart  27  at the front and rear in each component mounting device  16 . Cutter device  31  cuts carrier tape  29  after supplying components PT in each tape feeder  26 . Duct  32  is provided below cutter device  31 , and guides scraps KZ of carrier tape  29 , which is cut by cutter device  31  and drops by the own weight, to duct opening  32 K opened at the lower portion of feeder cart  27  ( FIG.  4   ). 
     In this manner, scraps KZ of carrier tape  29  are generated from each component mounting device  16  that configures component mounting device group  16 G, and the amount of scraps KZ of carrier tape  29  generated in the entire component mounting device group  16 G is enormous. Component mounting system  1  in the present embodiment includes scraps collecting mechanism  40  (tape scraps collecting device) for automatically collecting and discarding a large amount of scraps KZ of carrier tape  29  generated from component mounting device group  16 G in one place without manual labor ( FIGS.  2 ,  5 , and  6   ). Scraps collecting mechanism  40  will be described below. 
     In  FIGS.  5  and  6   , scraps collecting mechanism  40  includes main conveyor  41 , sub-conveyor  42 , disposing conveyor  43 , and storage box  44 . Main conveyor  41  is installed in region FA covered with component mounting device group  16 G on floor surface FL. Main conveyor  41  is installed such that the conveying direction is oriented in the arrangement direction (X-axis direction) of four component mounting devices  16 . At the end portion (the end portion on the right side when viewed from operator OP) on the downstream side of main conveyor  41  in the conveying direction (X-axis direction), component mounting device  16  positioned on the most downstream side is positioned in the vicinity of the right end portion. 
     In the present embodiment, component mounting system  1  has two board conveying paths  1 L at the front and rear, and two feeder carts  27  at the front and rear are connected to each other in each component mounting device  16  corresponding to two board conveying paths  1 L. Therefore, in the present embodiment, two main conveyors  41  are installed while being arranged in the Y-axis direction corresponding to two board conveying paths  1 L provided in component mounting system  1  (that is, corresponding to the rows of feeder carts  27 ). Two main conveyors  41  are installed in region FA of floor surface FL under component mounting device group  16 G at a step before component mounting system  1  is installed on floor surface FL or in a process in which component mounting system  1  is installed on floor surface FL. 
     Each main conveyor  41  may be one long conveyor extending in the X-axis direction, but in the present embodiment, a plurality of conveyor devices  41 B are connected to each other in series ( FIG.  6   ). As illustrated in  FIG.  7   , one conveyor device  41 B has a configuration in which motor  41 M drives belt  41 C supported by two side walls  41 H that are provided to face each other (here, face each other in the Y-axis direction) in the horizontal direction. The operation of motor  41 M is controlled by a host control system (not illustrated) that controls the overall operation of component mounting system  1 . 
     In  FIG.  7   , belt  41 C of conveyor device  41 B is inclined such that the conveying direction is a direction of the slope from the upstream side to the downstream side in the direction of board KB. As illustrated in  FIG.  8   , in the conveyor devices  41 B connected to each other, downstream side end portion  41 K of conveyor device  41 B positioned on the upstream side is positioned below upstream side end portion  41 J of conveyor device  41 B positioned on the downstream side. Therefore, the conveyed object that has been conveyed by conveyor device  41 B on the downstream side and has reached downstream side end portion  41 K drops from there and transfers to upstream side end portion  41 J of conveyor device  41 B on the upstream side. In this manner, on main conveyor  41 , scraps KZ of carrier tape  29 , which is the conveyed object, are conveyed from the upstream side to the downstream side. 
     It is preferable that the plurality of conveyor devices  41 B are the same type, and the length (dimension in the X-axis direction) of one conveyor device  41 B is the same as the lateral width (dimension in the X-axis direction) of one component mounting device  16 . In this case, the number of connected conveyor devices  41 B is the same as the number of component mounting devices  16  that configure component mounting device group  16 G. 
     In  FIG.  4   , sub-conveyor  42  is installed on floor surface FL under feeder cart  27  included in each component mounting device  16 . Sub-conveyor  42  is installed for each feeder cart  27  included in each component mounting device  16 . In the present embodiment, since each component mounting device  16  has two feeder carts  27  at the front and rear, two sub-conveyors  42  are also installed at the front and rear of each component mounting device  16 . 
     As illustrated in  FIG.  7   , each sub-conveyor  42  has a configuration in which motor  42 M drives belt  42 C supported by two side walls  42 H that are provided to face each other (here, face each other in the X-axis direction) in the horizontal direction. The operation of motor  42 M is controlled by control device  16 CT of component mounting device  16  positioned above sub-conveyor  42 . 
     In  FIG.  6   , of two front and rear sub-conveyors  42  provided corresponding to each component mounting device  16 , the one positioned on the front side of component mounting device  16  is connected to main conveyor  41  positioned on the front side. Meanwhile, of the two front and rear sub-conveyors  42  provided corresponding to each component mounting device  16 , the one positioned on the rear side of component mounting device  16  is connected to main conveyor  41  positioned on the rear side. 
     In  FIG.  7   , the conveying direction of belt  42 C of each sub-conveyor  42  installed on floor surface FL is a horizontal direction. When sub-conveyor  42  is connected to main conveyor  41 , downstream side end portion  42 K of sub-conveyor  42  in the conveying direction is positioned above main conveyor  41  ( FIGS.  4  and  7   ). Here, the conveying direction of belt  42 C of each sub-conveyor  42  is the horizontal direction, but as illustrated in  FIG.  9   , the belt may be inclined such that the conveying direction is a direction of the slope from the upstream side (feeder cart  27  side) to the downstream side (main conveyor  41  side). 
     Each sub-conveyor  42  receives scraps KZ of carrier tape  29  discharged from tape feeder  26  of corresponding component mounting device  16  through duct  32 . Then, by conveying scraps KZ toward the center portion side of component mounting device  16 , and dropping scraps KZ of carrier tape  29  from downstream side end portion  42 K in the conveying direction, scraps KZ are delivered to main conveyor  41 . 
     As illustrated in  FIG.  10 A , container  27 B for containing scraps KZ of carrier tape  29  discharged from duct  32  is usually installed in the lower portion of feeder cart  27 . In the present embodiment, container  27 B is removed from feeder cart  27  of each component mounting device  16  ( FIG.  10 B ), and sub-conveyor  42  is installed by using space  27 S above floor surface FL formed by removing container  27 B ( FIG.  10 C ). Therefore, each sub-conveyor  42  can be installed after component mounting device group  16 G is installed on floor surface FL, and can be connected to main conveyor  41  already installed on floor surface FL. 
     In  FIG.  6   , disposing conveyor  43  is installed on an extension line of the arrangement of component mounting device group  16 G outside region FA ( FIG.  2   ). In detail, the disposing conveyor is installed on floor surface FL below second relay conveyor  17  at a position in the vicinity of the terminal end portion of main conveyor  41 . Each disposing conveyor  43  has a configuration in which motor  43 M drives belt  43 C supported by two side walls  43 H that are provided to face each other (here, face each other in the Y-axis direction) in the horizontal direction. The operation of motor  43 M is controlled by the above-described host control system that controls the overall operation of component mounting system  1 . 
     In  FIG.  7   , in the present embodiment, belt  43 C of disposing conveyor  43  is configured to be inclined in the direction of the slope from the upstream side to the downstream side in the conveying direction. Upstream side end portion  43 J of disposing conveyor  43  is positioned below downstream side end portion  41 K of conveyor device  41 B positioned on the most downstream side of the plurality (four here) of conveyor devices  41 B that configure main conveyor  41 . ( FIG.  6   ). Disposing conveyor  43  receives scraps KZ of carrier tape  29  conveyed by main conveyor  41  to the terminal end portion thereof, and conveys received scraps KZ from downstream side end portion  43 K to upstream side end portion  43 J. 
     In  FIG.  7   , storage box  44  is a box-shaped member that opens upward and is installed outside region FA and on the downstream side of disposing conveyor  43 . In a state where storage box  44  and disposing conveyor  43  are connected to each other, downstream side end portion  43 K of disposing conveyor  43  is positioned above storage box  44 . Scraps KZ of carrier tape  29 , which are received from main conveyor  41  by disposing conveyor  43  and conveyed from upstream side end portion  43 J toward downstream side end portion  43 K, drop from downstream side end portion  43 K of disposing conveyor  43  and are disposed of in storage box  44 . Storage box  44  stores scraps KZ of carrier tape  29 , which are disposed of from disposing conveyor  43 . 
     In this manner, in the present embodiment, disposing conveyor  43  serves as a scraps disposer that receives scraps KZ of carrier tape  29  conveyed by main conveyor  41  and disposes of scraps KZ into storage box  44  disposed outside region FA. Further, storage box  44  is a scraps storage that stores scraps KZ of carrier tape  29  discharged from each of the plurality of tape feeders  26  included in four component mounting devices  16 . 
     When component mounting system  1  is in an operating state and each component mounting device  16  that configures component mounting device group  16 G performs a component mounting operation, scraps KZ of carrier tape  29  are generated from component mounting device  16 , and scraps KZ are discharged by the own weight drop from duct  32  provided in feeder cart  27 . Scraps KZ discharged from duct  32  drop onto sub-conveyor  42  installed under feeder cart  27 , and are conveyed by sub-conveyor  42  toward the center portion side of component mounting device  16 . Then, scraps KZ drop from downstream side end portion  42 K of sub-conveyor  42  and are delivered to main conveyor  41 . Main conveyor  41  is always operating during the operation of component mounting device group  16 G, and conveys scraps KZ received from each of the plurality of sub-conveyors  42  in the same direction as the flow of board KB. Scraps KZ conveyed by main conveyor  41  are delivered to disposing conveyor  43 , and disposing conveyor  43  disposes of scraps KZ into storage box  44 . 
     Here, control device  16 CT provided in each component mounting device  16  operates each sub-conveyor  42  in accordance with the cutting operation of cutter device  31  that discharges scraps KZ of carrier tape  29  to sub-conveyors  42 . Specifically, when cutter device  31  of feeder cart  27  performs a cutting operation, control device  16 CT operates sub-conveyor  42  installed under feeder cart  27  for a predetermined period of time. Scraps KZ of carrier tape  29  discharged from cutter device  31  are delivered from sub-conveyor  42  to main conveyor  41  when sub-conveyor  42  operates for a predetermined period of time. In addition, control device  16 CT may operate sub-conveyor  42  every time when a plurality of times of cutting work are operated, instead of operating sub-conveyor  42  every time cutter device  31  performs the cutting work. 
     As described above, when scraps KZ of carrier tape  29  are stored in storage box  44 , and the appropriate time arrives when the amount of accommodated scraps KZ becomes a certain amount, storage box  44  is moved from floor surface FL. Then, scraps KZ are picked up from storage box  44  and discarded. In the present embodiment, as illustrated in  FIG.  7   , caster  44 C is provided at the bottom portion of storage box  44 , and storage box  44  can be easily moved on floor surface FL. 
     As described above, in component mounting system  1  according to the present embodiment, main conveyor  41  is installed so as to extend in the arrangement direction of component mounting devices  16  in the region on floor surface FL under component mounting device group  16 G, and scraps KZ of carrier tape  29  discharged from each component mounting device  16  and delivered from sub-conveyor  42  installed under each feeder cart  27  are conveyed outward from underneath of component mounting device group  16 G. In addition, scraps KZ of carrier tape  29  conveyed by main conveyor  41  are stored in storage box  44  installed outside region FA. Since storage box  44  stores scraps KZ of carrier tape  29  discharged from all tape feeders  26  included in component mounting device group  16 G, by discarding scraps KZ of carrier tape  29  stored in storage box  44 , the operator who collects and discards scraps KZ can discard all scraps KZ discharged from four component mounting devices  16  without going around each component mounting device  16 . 
     Further, in component mounting system  1  according to the present embodiment, the controller (here, each control device  16 CT of four component mounting devices  16 ) that controls each of the plurality of sub-conveyors operates each of the plurality of sub-conveyors  42  in accordance with the cutting operation of cutter device  31  that discharges scraps KZ to sub-conveyor  42 . Therefore, it is possible to reduce power consumption as compared with a case where the plurality of sub-conveyors  42  are always in the operating state. 
     In the first modification example illustrated in  FIG.  11   , the scraps disposer that receives scraps KZ of carrier tape  29  conveyed by main conveyor  41  and disposes of scraps KZ to storage box  44  is changed from disposing conveyor  43  described above to scraps suction-up device  50 . Scraps suction-up device  50  receives scraps KZ of carrier tape  29  that has been conveyed by main conveyor  41  to the terminal end portion thereof by receiving tray  51 , and ejects the scraps to storage box  44  from ejection port  53  by suctioning up scraps KZ of carrier tape  29  received by receiving tray  51  from suction-up port  52 . Even with such a configuration, it is possible to obtain the same effect as the configuration using disposing conveyor  43 . 
     A second modification example illustrated in  FIG.  12    is an example in which storage box  44  is installed at a position out of the arrangement of the plurality of component mounting devices  16 . In the second modification example, the terminal end portion of main conveyor  41  is connected to a direction changing conveyor  41 T that changes the conveying direction from main conveyor  41  side to operator OP side (or may be the side opposite to operator OP). Then, after connecting disposing conveyor  43  to the tip of the conveying direction changed by direction changing conveyor  41 T, the conveying direction of disposing conveyor  43  is made to coincide with the changed conveying direction. In the second modification example, scraps KZ of carrier tape  29  conveyed by main conveyor  41  can be stored in storage box  44  installed at a position deviated from operator OP side (or the side opposite to operator OP) from the region occupied by component mounting system  1  on floor surface FL. Therefore, the work of moving storage box  44  and discarding scraps KZ is easy, and the workability is improved. 
     As described above, in component mounting system  1  according to the present embodiment, main conveyor  41  is installed in region FA on floor surface FL under component mounting device group  16 G along the arrangement direction of component mounting devices  16 , and main conveyor  41  conveys scraps KZ of carrier tape  29  discharged from each of the plurality of component mounting devices  16 . In addition, scraps KZ of carrier tape  29  conveyed by main conveyor  41  are stored in storage box  44  installed outside region FA, and collected and discarded in one place. Since main conveyor  41  is installed on floor surface FL as a device separate from each component mounting device  16 , there is no need to change the design of the equipment on component mounting device  16  side and the layout can be freely laid out on floor surface FL for general use, and scraps collecting mechanism  40  can be constructed inexpensively. 
     Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the description above, and various modifications and the like are possible. For example, in the above-described embodiment, scraps collecting mechanism  40  is configured to include a scraps disposer that receives scraps KZ of carrier tape  29  conveyed by main conveyor  41  and disposes of scraps KZ into storage box  44 , but in a case where storage box  44  directly receives scraps KZ of carrier tape  29  conveyed to the terminal end portion by main conveyor  41  (for example, in a case where a recessed portion is provided on floor surface FL and storage box  44  is accommodated in the recessed portion) and the like, the scraps disposer becomes unnecessary. Further, in the above-described embodiment, main conveyor  41  conveys scraps KZ in the direction from the upstream side to the downstream side of the flow of board KB, but on the contrary, scraps KZ may be conveyed in the direction from the downstream side to the upstream side of the flow of board KB. 
     Further, in the above-described embodiment, scraps collecting mechanism  40  includes the plurality of sub-conveyors  42 , and the plurality of sub-conveyors  42  receive scraps KZ of carrier tape  29  discharged from each of the plurality of component mounting devices  16  and deliver the scraps to main conveyor  41 , but when main conveyor  41  directly receives scraps KZ discharged from each component mounting device  16 , sub-conveyor  42  becomes unnecessary. Further, in the above-described embodiment, each of the plurality of sub-conveyors  42  operates in accordance with the cutting operation of carrier tape  29  by cutter device  31 , but similar to main conveyor  41 , the sub-conveyor may be always operating during the operation of component mounting device group  16 G. 
     There is provided a component mounting system and a tape scraps collecting device that can inexpensively construct a scraps collecting mechanism that collects the scraps of carrier tape generated from the tape feeder of each component mounting device in one place.