Patent Publication Number: US-11032958-B2

Title: Mounting work machine

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of U.S. application Ser. No. 16/230,963 filed Dec. 21, 2018, which is a continuation of U.S. application Ser. No. 15/554,386 filed Aug. 29, 2017 (now U.S. Pat. No. 10,206,318 issued Feb. 12, 2019), the entire contents of each of which is incorporated herein by reference. U.S. application Ser. No. 15/554,386 is a 371 of International Application No. PCT/JP2015/056161 filed Mar. 3, 2015. 
    
    
     TECHNICAL FIELD 
     The present disclosure relates to a mounting work machine that performs mounting work of components on a board. 
     BACKGROUND ART 
     In a component supply device that has a component support section that supports multiple components in a dispersed state, the components are dispersed from a component container in the component support section, and components with a holdable posture are held by a component holding tool out of the components that are supported in the component support section. Next, supply of the components is carried out by placing the components that are held in the component holding tool in an ordered state in a placement section. Then, the mounting work on the board is carried out using the supplied components in the mounting work machine. In addition, the component supply device has a component return device that returns the components from the component support section to the component container. Therefore, for example, the components are returned from the component support section to the component container, and the components that are returned to the component container are redispersed to the component support section in a case where there is no holdable posture component by the component holding tool in the component support section. Thereby, the components from the component support section are held by the component holding tool by the components with a posture that is holdable by the component holding tool being redispersed in the component support section. An example of a component supply device with such a structure is described in the following patent literature. 
     PTL 1: JP-A-10-202569 
     SUMMARY 
     According to the component supply device described in the patent literature above, it is possible to supply a large number of components from the component supply device by carrying out return work of the component to the component container and dispersal work on the component support section of the components that are returned to the component container. However, there is a concern that supply of the components is delayed and a cycle time of the mounting work by the mounting work machine is reduced since time is necessary to a certain extent in return work of the components to the component container and dispersal work of the components to the component support section. The present disclosure is made in consideration of such circumstances, and addresses a problem of preventing a reduction of the cycle time of the mounting work of the components that are supplied to the component supply device. 
     In order to solve the problem described above, a mounting work machine that performs mounting work of components on a board described in the present disclosure includes a component supply device that has (A) a component storage device that stores a plurality of components, (B) a component support section that supports the components in a dispersed state in which the components are dispersed from the component storage device, (C) a component return device that returns the components that are in a dispersed state in the component support section to the component storage device, (D) a first component holding tool that holds the components that are supported in the component support section, (E) an imaging device that images the components that are supported in the component support section, (F) a placement section for placing the components that are held in the first component holding tool in an ordered state, and (G) a control device, and supplies the components in an ordered state in the placement section, and a component mounting device that has a second component holding tool that holds the components that are placed on the placement section and mounts the components that are held in the second component holding tool on the board, in which the control device includes a component number acquisition section that acquires a necessary number of components that is a number of components that are necessary during mounting work in the mounting work machine, a component number calculating section that calculates a number of holdable components that is a number of components that are holdable from the component support section by the first component holding tool based on captured image data that is captured by the imaging device, a first determination section that determines whether or not the necessary number of components that are acquired by the component number acquisition section exceeds the number of holdable components that are calculated by the component number calculating section, and a component dispersing section that redisperses the components from the component storage device to the component support section prior to holding the components from the component support section by the first component holding tool and after the components in a state of being dispersed in the component support section are returned to the component storage device through the operation of the component return device on condition that it is determined that the necessary number of components exceeds the number of holdable components by the first determination section. 
     The mounting work machine described in the present disclosure determines whether or not the necessary number of components that is the number of components that are necessary during mounting work exceeds the number of holdable components that is a number of components that are holdable from the component support section by the component holding tool. Then, as a condition of determining that the necessary number of components exceeds the number of holdable components, by carrying out return work of the components to the component container and dispersal work of the components in the component support section prior to holding the components from the component support section by the component holding tool. Thereby, it is possible to carry out return work of the components to the component container and dispersal work of components of the component support section with good timing, and it is possible to prevent reduction of the cycle time of mounting work by the mounting work machine. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a perspective view illustrating a component mounting machine. 
         FIG. 2  is a perspective view illustrating a component mounting device of the component mounting machine. 
         FIG. 3  is a perspective view illustrating a bulk component supply device. 
         FIG. 4  is a perspective view illustrating a component supply unit. 
         FIG. 5  is a perspective view illustrating the component supply unit in a state in which a component collecting container is lifted to a lifting end position. 
         FIG. 6  is a perspective view illustrating a component holding head. 
         FIG. 7  is a diagram illustrating a component receiving member in a state in which the lead component is stored. 
         FIG. 8  is a block diagram illustrating a control device of the component mounting machine. 
         FIG. 9  is a perspective view illustrating a component dispersed state realization device. 
         FIG. 10  is a diagram illustrating a component support member in a state in which multiple lead components are dispersed. 
         FIG. 11  is a perspective view illustrating the component dispersed state realization device and the component return device. 
         FIG. 12  is a diagram illustrating a flowchart of a control program. 
         FIG. 13  is a diagram illustrating a flowchart of a control program. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Hereinafter, detailed description will be given of the example of the present disclosure with reference to the drawings as a mode for carrying out the present disclosure. 
     &lt;Configuration of Component Mounting Machine&gt; 
       FIG. 1  illustrates a component mounting machine  10 . The component mounting machine  10  is a device for executing mounting work of components onto a circuit substrate  12 . The component mounting machine  10  is provided with a device main body  20 , a substrate conveyance and holding device  22 , a component mounting device  24 , imaging devices  26  and  28 , a component supply device  30 , a bulk component supply device  32 , and a control device  34  (refer to  FIG. 8 ). Examples of the circuit substrate  12  include a circuit board, a three-dimensional structure substrate, and the like, and examples of the circuit board include a printed wiring board, a printed circuit board, and the like. 
     The device main body  20  is formed of a frame section  40 , and a beam section  42  which bridges over the frame section  40 . The substrate conveyance and holding device  22  is arranged in the middle of the front-back direction of the frame section  40 , and includes a conveyance device  50  and a clamping device  52 . The conveyance device  50  is a device which conveys the circuit substrate  12 , and the clamping device  52  is a device which holds the circuit substrate  12 . Thereby, the substrate conveyance and holding device  22  conveys the circuit substrate  12  and holds the circuit substrate  12  in a fixed manner at a predetermined position. In the following description, the conveyance direction of the circuit substrate  12  will be referred to as an X-direction, a horizontal direction which is perpendicular to the conveyance direction will be referred to as a Y-direction, and the vertical direction will be referred to as a Z-direction. In other words, the width direction of the component mounting machine  10  is the X-direction, and the front-back direction is the Y-direction. 
     The component mounting device  24  is arranged on the beam section  42 , and includes two work heads  60  and  62 , and a work head moving device  64 . Each of the work heads  60  and  62  includes a suction nozzle  66  (refer to  FIG. 2 ), and holds a component using the suction nozzle  66 . The work head moving device  64  includes an X-direction moving device  68 , a Y-direction moving device  70 , and a Z-direction moving device  72 . The two work heads  60  and  62  are caused to move integrally to an arbitrary position on the frame section  40  by the X-direction moving device  68  and the Y-direction moving device  70 . As illustrated in  FIG. 2 , the work heads  60  and  62  are mounted to be attachable and detachable in sliders  74  and  76 , respectively, and the Z-direction moving device  72  causes the sliders  74  and  76  to move in the up-down direction individually. In other words, the work heads  60  and  62  are caused to move in the up-down direction individually by the Z-direction moving device  72 . 
     The imaging device  26  is attached to the slider  74  in a state of facing downward, and is caused to move in the X-direction, the Y-direction, and the Z-direction together with the work head  60 . Accordingly, the imaging device  26  images an arbitrary position on the frame section  40 . As illustrated in  FIG. 1 , the imaging device  28  is arranged between the substrate conveyance and holding device  22  and the component supply device  30  on the frame section  40  in a state of facing upward. Thereby, the imaging device  28  images the components that are held on the suction nozzle  66  of the work heads  60  and  62 . 
     The component supply device  30  is arranged on an end portion of one side in the front-back direction of the frame section  40 . The component supply device  30  includes a tray-type component supply device  78  and a feeder-type component supply device (not illustrated). The tray-type component supply device  78  is a device which supplies components which are in a state of being placed on a tray. The feeder-type component supply device is a device which supplies components using a tape feeder (not illustrated) and a stick feeder (not illustrated). 
     The bulk component supply device  32  is arranged on an end portion of the other side in the front-back direction of the frame section  40 . The bulk component supply device  32  is a device which orders multiple components in a state of being dispersed loosely and supplies the components in an ordered state. In other words, a device which orders multiple components which are in arbitrary postures into predetermined postures, and supplies the components which are in the predetermined postures. Hereinafter, detailed description will be given of the configuration of the component supply device  32 . Examples of the components which are supplied by the component supply device  30  and the bulk component supply device  32  include electronic circuit components, constituent components of a solar cell, constituent components of a power module, and the like. Among the electronic circuit components, there are components which include leads, components which do not include leads, and the like. 
     As illustrated in  FIG. 3 , the bulk component supply device  32  includes a main body  80 , a component supply unit  82 , an imaging device  84 , and a component delivery device  86 . 
     (a) Component Supply Unit 
     The component supply unit  82  includes a component feeder  88 , a component dispersed state realization device  90 , and a component return device  92 , and the component feeder  88 , the component dispersed state realization device  90 , and the component return device  92  are integrally configured. The component supply units  82  are assembled to be attachable to and detachable from a base  96  of a main body  80 , and in the bulk component supply device  32 , five component supply units  82  are arranged to line up in a single row in the X-direction. 
     (i) Component Feeder 
     As illustrated in  FIG. 4 , the component feeder  88  includes a component storage device  100 , a housing  102 , and a grip  104 . The component storage device  100  is substantially a rectangular parallelepiped shape, and the upper face and the front face are opened. The bottom face of the component storage device  100  is an inclined surface  116 , and is inclined toward the open front face of the component storage device  100 . 
     The housing  102  has a pair of side walls  120 , and the component storage device  100  is held to be rockable between the pair of side walls  120 . In addition, an inclined plate  152  is arranged, in a fixed manner, between the pair of side walls  120  so as to be positioned in front of the lower end portion of the front face of the component storage device  100 . The inclined plate  152  is inclined so as to reduce toward the front. 
     The grip  104  is arranged on the end portion on the rear side of the housing  102 , and is constituted by a fixed gripping member  170  and a movable gripping member  172 . The movable gripping member  172  approaches or separates with respect to the fixed gripping member  170 . Then, the movable gripping member  172  is joined to the rear face of the component storage device  100  by a connecting arm (not illustrated). Thereby, the movable gripping member  172  approaches or separates from the fixed gripping member  170  by grasping the grip  104 , and the component storage device  100  rocks between the pair of side walls  120 . 
     In addition, the component feeder  88  is arranged between a pair of side frame sections  190  that are assembled on the base  96  and is attachable to and detachable from the base  96 . Note that, a lock mechanism (not illustrated) is provided on a lower end portion of the movable gripping member  172  of the grip  104 , and the lock mechanism is released by grasping the grip  104 . That is, the component feeder  88  is removed from between the pair of side frame sections  190  by lifting the component feeder  88  in a state in which the operator grasps the grip  104  of the component feeder  88 . 
     (ii) Component Dispersed State Realization Device 
     The component dispersed state realization device  90  includes a component support member  220 , a component support member moving device  222 , and a feeder vibration device  224 . The component support member  220  is substantially in the form of a longitudinal plate and is arranged so as to extend forward from under the inclined plate  152  of the component feeder  88 . In addition, aside wall section  228  is formed on both side edges of the component support member  220  in a longitudinal direction. 
     The component support member moving device  222  is a device that drives the component support member  220  through driving of an electromagnetic motor  223  (refer to  FIG. 8 ) in a front-back direction. Thereby, the component support member  220  moves in the front-back direction in a state in which the upper face of the component support member  220  is horizontal, slightly below the lower end of the inclined plate  152  of the component feeder  88 . 
     The feeder vibration device  224  includes a cam member  240 , a cam follower  242 , and a stopper  244 . The cam member  240  is plate shaped, and is fixed to the outer side face of the side wall section  228  so as to extend in the front-back direction. Multiple teeth  245  are formed at an equal interval in the front-back direction on the upper end portion of the cam member  240 . The cam follower  242  includes a lever  252  and a roller  254 . The lever  252  is arranged on the lower end portion of the side wall  120  of the component feeder  88 , and is swingable centered on the upper end portion. The roller  254  is rotatably held on the lower end portion of the lever  252 . The lever  252  is biased to a direction toward the front by an elastic force of a coil spring (not illustrated). In addition, the stopper  244  is provided to protrude from the side wall  120 , and the lever  252  which is biased by the elastic force of the coil spring is in contact with the stopper  244 . 
     (iii) Component Return Device 
     As illustrated in  FIG. 5 , the component return device  92  includes a container lifting and lowering device  260  and a component collecting container  262 . The container lifting and lowering device  260  includes an air cylinder  266  and a lifting and lowering member  268 , and the lifting and lowering member  268  lifts and lowers through the operation of the air cylinder  266 . In addition, the air cylinder  266  is fixed to the end portion of the front side of the component support member  220 . Thereby, the air cylinder  266  moves in the front-back direction together with the component support member  220  through the operation of the component support member moving device  222 . 
     The component collecting container  262  is arranged on the upper face of the lifting and lowering member  268  and moves in the up-down direction through the operation of the air cylinder  266 . The component collecting container  262  has a box-like shape with an open upper face, and is rotatably held on the upper face of the lifting and lowering member  268 . As illustrated in  FIG. 4 , a protruding pin  272  is arranged on an end portion on the rear side of the component collecting container  262 . The protruding pin  272  protrudes toward the outside at the side of the component collecting container  262 . In addition, an engaging block  274  is fixed to the inside of the upper end portion on the front side of the side frame sections  190 . As illustrated in  FIG. 5 , the protruding pin  272  is engaged with the engaging block  274  when the component collecting container  262  is lifted to the lifting end position through the operation of the air cylinder  266 . Thereby, the component collecting container  262  rotates. 
     (b) Imaging Device 
     As illustrated in  FIG. 3 , the imaging device  84  includes a camera  290  and a camera moving device  292 . The camera moving device  292  includes a guide rail  296  and a slider  298 . The guide rail  296  is fixed to the main body  80  so as to extend in the width direction of the bulk component supply device  32  above the component feeder  88 . The slider  298  is attached to the guide rail  296  to be slidable, and slides to an arbitrary position through the operation of the electromagnetic motor  299  (refer to  FIG. 8 ). The camera  290  is mounted to the slider  298  in a state of facing downward. 
     (c) Component Delivery Device 
     As illustrated in  FIG. 3 , the component delivery device  86  includes a component holding head moving device  300 , a component holding head  302 , and two shuttle devices  304 . 
     The component holding head moving device  300  includes an X-direction moving device  310 , a Y-direction moving device  312 , and a Z-direction moving device  314 . The Y-direction moving device  312  has a Y slider  316  that is arranged above the component supply unit  82  so as to extend in the X-direction, and the Y slider  316  moves to the arbitrary position in the Y-direction through driving of the electromagnetic motor  319  (refer to  FIG. 8 ). The X-direction moving device  310  has an X slider  320  that is arranged on a side face of the Y slider  316 , and the X slider  320  moves to the arbitrary position in the X-direction through driving of the electromagnetic motor  321  (refer to  FIG. 8 ). The Z-direction moving device  314  has a Z slider  322  that is arranged on a side face of the X slider  320 , and the Z slider  322  moves to the arbitrary position in the Z-direction through driving of the electromagnetic motor  323  (refer to  FIG. 8 ). 
     As illustrated in  FIG. 6 , the component holding head  302  includes a head main body  330 , a suction nozzle  332 , a nozzle pivoting device  334 , and a nozzle rotation device  335 . The head main body  330  is formed integrally with the Z slider  322 . The suction nozzle  332  holds the component and is mounted to be attachable to and detachable from the lower end portion of a holder  340 . The holder  340  is bendable in a support shaft  344  and is bent  90  degrees upward through the operation of the nozzle pivoting device  334 . Thereby, the suction nozzle  332  that is mounted on the lower end portion of the holder  340  pivots  90  degrees and is positioned at a pivoting position. That is, the suction nozzle  332  pivots between the non-pivoting position and the pivoting position through the driving of the nozzle pivoting device  334 . In addition, the nozzle rotation device  335  causes the suction nozzle  332  to rotate around the axis of the suction nozzle  332 . 
     In addition, as illustrated in  FIG. 3 , each of the two shuttle devices  304  includes a component carrier  388  and a component carrier moving device  390 , and the shuttle devices  304  are fixed to the main body  80  to line up in the horizontal direction on the front side of the component supply units  82 . Five component receiving members  392  are mounted to the component carrier  388  in a state of being lined up in a single row in the horizontal direction, and the components are placed on each of the component receiving members  392 . 
     In detail, as illustrated in  FIG. 7 , the component which is supplied by the bulk component supply device  32  is an electronic circuit component  410  (hereinafter may be abbreviated to “lead component”) which includes leads, and the lead component  410  is formed of a block-shaped component main body  412 , and two leads  414  which protrude from the bottom face of the component main body  412 . In addition, a component receiving recessed section  416  is formed in the component receiving member  392 . The component receiving recessed section  416  is a step-shaped recessed section, and is formed of a main body section receiving recessed section  418  which is open to the upper face of the component receiving member  392 , and a lead receiving recessed section  420  which is open to the bottom face of the main body section receiving recessed section  418 . Then, the lead component  410  is set to a posture at which the leads  414  face downward, and is inserted inside the component receiving recessed section  416 . Thereby, the lead component  410  is placed inside the component receiving recessed section  416  in a state in which the component main body  412  is inserted in the main body section receiving recessed section  418  while the leads  414  are inserted in the lead receiving recessed section  420 . 
     In addition, as illustrated in  FIG. 3 , the component carrier moving device  390  is a plate shaped longitudinal member, and is arranged on the front side of the component supply unit  82  so as to extend in the front-back direction. The component carrier  388  is arranged on the upper face of the component carrier moving device  390  to be slidable in the front-back direction, and slides to an arbitrary position in the front-back direction through driving of the electromagnetic motor  430  (refer to  FIG. 8 ). When the component carrier  388  slides in a direction approaching the component supply unit  82 , the component holding head  302  slides to the component receiving position which is positioned within the movement range of the component holding head  302  due to the component holding head moving device  300 . Meanwhile, when the component carrier  388  slides in a direction separating from the component supply unit  82 , the component carrier  388  slides to the component supply position which is positioned within the movement range of the work heads  60  and  62  by the work head moving device  64 . 
     In addition, as illustrated in  FIG. 8 , the control device  34  includes an integrated control device  450 , multiple individual control devices  452  (only one is illustrated in the diagram), an image processing device  454 , and a storage device  456 . The integrated control device  450  constitutes the main body of a computer, and connects the substrate conveyance and holding device  22 , the component mounting device  24 , the imaging device  26 , the imaging device  28 , the component supply device  30 , and the bulk component supply device  32 . Thereby, the integrated control device  450  integratedly controls the substrate conveyance and holding device  22 , the component mounting device  24 , the imaging device  26 , the imaging device  28 , the component supply device  30 , and the bulk component supply device  32 . Multiple individual control devices  452  constitute the main body of the computer, and are provided corresponding to the substrate conveyance and holding device  22 , the component mounting device  24 , the imaging device  26 , the imaging device  28 , the component supply device  30 , and the bulk component supply device  32  (only the individual control device  452  that corresponds to the bulk component supply device  32  is illustrated in the diagram). The individual control devices  452  of the bulk component supply device  32  is connected to the component dispersed state realization device  90 , the component return device  92 , the camera moving device  292 , the component holding head moving device  300 , the component holding head  302 , and the shuttle device  304 . Thereby, the individual control devices  452  of the bulk component supply device  32  control the component dispersed state realization device  90 , the component return device  92 , the camera moving device  292 , the component holding head moving device  300 , the component holding head  302 , and the shuttle device  304 . In addition, the image processing device  454  is connected to the imaging device  84 , and processes captured image data that is captured by the imaging device  84 . The image processing device  454  is connected to the individual control devices  452  of the bulk component supply device  32 . Thereby, the individual control devices  452  of the bulk component supply device  32  acquire the captured image data that is captured by the imaging device  84 . In addition, the storage device  456  stores various data, and is connected to the individual control devices  452 . Thereby, the individual control devices  452  acquire various data from the storage device  456 . 
     &lt;Operation of Component Mounting Machine&gt; 
     According to the configuration described above, the component mounting machine  10  carries out work of mounting the components onto the circuit substrate  12  which is held by the substrate conveyance and holding device  22 . Specifically, the circuit substrate  12  is conveyed to a working position, and is held at the position by the clamping device  52  in a fixed manner. Next, the imaging device  26  moves above the circuit substrate  12  and images the circuit substrate  12 . Accordingly, information relating to the error of the holding position of the circuit substrate  12  is obtained. The component supply device  30  or the bulk component supply device  32  supplies the components at a predetermined supply position. Detailed description relating to the supplying of the components by the bulk component supply device  32  will be given later. Either of the work heads  60  and  62  moves above the supply position of the component and holds the component using the suction nozzle  66 . Next, the work head  60  or  62  which holds the component moves above the imaging device  28 , and the component which is held by the suction nozzle  66  is imaged by the imaging device  28 . Thereby, information relating to the error of the holding position of the component is obtained. The work head  60  or  62  which holds the component moves above the circuit substrate  12 , corrects the error of the holding position of the circuit substrate  12 , the error of the holding position of the component, and the like, and mounts the component onto the circuit substrate  12 . 
     &lt;Operation of Bulk Component Supply Device&gt; 
     (a) In the bulk component supply device  32  of the lead components that are supplied by the bulk component supply device, the lead components  410  are inserted into the component storage device  100  of the component feeder  88  by the operator, and the inserted lead components  410  are supplied in a state of being placed on the component receiving member  392  of the component carrier  388  through the operation of the component supply unit  82  and the component delivery device  86 . In detail, the operator inserts the lead components  410  from the opening on the upper face of the component storage device  100  of the component feeder  88 . At this time, the component support member  220  is moved below the component feeder  88  through the operation of the component support member moving device  222 , and the component collecting container  262  is positioned in front of the component feeder  88 . 
     The lead components  410  which are inserted from the opening on the upper face of the component storage device  100  fall on the inclined surface  116  of the component storage device  100  and spread out on the inclined surface  116 . At this time, in a case in which the lead components  410  which fall onto the inclined surface  116  exceed the inclined plate  152  and roll off, the lead components  410  are accommodated in the component collecting container  262  that is positioned in front of the component feeder  88 . 
     After the insertion of the lead components  410  to the component storage device  100 , the component support member  220  is caused to move from under the component feeder  88  toward the front through the operation of the component support member moving device  222 . In this case, if the cam member  240  reaches the cam follower  242 , as illustrated in  FIG. 9 , the roller  254  of the cam follower  242  exceeds the teeth  245  of the cam member  240 . The lever  252  of the cam follower  242  is biased in a direction toward the front by the elastic force of a coil spring, and the biasing of the lever  252  to the front is restricted by the stopper  244 . Therefore, when the component support member  220  moves toward the front, the component support member  220  is maintained in a state in which the roller  254  meshes with the teeth  245 , the lever  252  does not rotate toward the front, and the roller  254  surpasses the teeth  245 . In this case, the component feeder  88  is lifted due to the surpassing of the teeth  245  of the roller  254 . In other words, in a state in which the roller  254  meshes with the teeth  245 , the component support member  220  moves toward the front, whereby the roller  254  surpasses the multiple teeth  245 , and the component feeder  88  continuously vibrates in the up-down direction. 
     The lead components  410  which are spread out on the inclined surface  116  of the component storage device  100  moves to the front through the vibration of the component feeder  88  and the inclination of the inclined surface  116 , and are discharged onto the upper face of the component support member  220  via the inclined plate  152 . In this case, the falling of the lead components  410  from the component support member  220  is prevented by the side wall section  228  of the component support member  220 . Then, the lead components  410  are dispersed on the upper face of the component support member  220  by moving the component support member  220  toward the front. 
     Note that, as illustrated in  FIG. 10 , the lead components  410  are dispersed on the component support member  220  in various postures when the lead components  410  are dispersed from the inside of the component storage device  100  on the component support member  220 . Specifically, the component main body  412  of the lead components  410  is substantially a rectangular parallelepiped shape, and has six faces. The six faces are the bottom face  500  out of which the leads  414  extend, an upper face  502  that is the rear side of the bottom face  500 , and four side faces  504 ,  506 ,  508 , and  510 . Then, the four side faces  504 ,  506 ,  508 , and  510  have a large surface area, and are a first side face  504  on which many concavities and convexities are present, a second side face  506  that is the rear side of the first side face  504  and has no concavities and convexities, a third side face  508  that is a side horizontal to the first side face  504  and the second side face  506 , and a fourth side face  510 . 
     The lead components  410  are supported on the component support member  220  at roughly five postures when such lead components  410  are dispersed on the component support member  220 . In detail, the lead components  410  are supported on the component support member  220  at any posture out of the six postures of a posture in which the first side face  504  faces straight up (hereinafter, described as a “first posture”), a posture in which the second side face  506  faces straight up (hereinafter, described as a “second posture”), a posture in which the third side face  508  or the fourth side face  510  faces straight up (hereinafter, described as a “third posture”), a posture in which the bottom face  500  faces straight up (hereinafter, described as a “fourth posture”), and a posture in which the first side face  504  or the second side face  506  faces diagonally up (hereinafter, described as a “fifth posture”). Note that, in the lead component  410  of the fifth posture, the first side face  504  or the second side face  506  face diagonally up due to the distal end of the lead component  410  contacting the component support member  220 . 
     As described above, when the lead components  410  are dispersed on the component support member  220  at various postures, the camera  290  of the imaging device  84  is caused to move above the component support member  220  through the operation of the camera moving device  292 , and the camera  290  images the lead components  410 . Then, the lead components that are pickup targets (hereinafter, referred to as “pickup target components”) based on the captured image data that is captured by the camera  290  are held by the suction nozzle  332  of the component holding head  302 . 
     Specifically, the component posture and component position are calculated for each of the multiple components that are dispersed on the component support member  220  based on the captured image data of the camera  290 . Then, only the lead components  410  with the calculated component posture that is the second posture and the third posture are specified as the pickup target components. Thereby, in the lead components  410  with the first posture, the first side face  504  on which there are many concavities and convexities faces upward, and it is not possible to hold the first side face  504  by the suction nozzle  332 . Thereby, in the lead components  410  with the fourth posture, the bottom face  500  on which the leads  414  are arranged faces upward, and it is not possible to hold the bottom face  500  by the suction nozzle  332 . In addition, in the lead components  410  with the fifth posture, the component main body  412  is in an inclined state, and it is not possible to hold the posture of the lead component  410  by the suction nozzle  332 . 
     Therefore, in the component support member  220  that is illustrated in  FIG. 10 , four lead components  410  out of  11  lead components  410  that are dispersed on the component support member  220  are specified as the pickup target components. Specifically, two lead components  410  with the second posture and two lead components  410  with the third posture are specified as the pickup target components. Note that, when the lead components  410  are dispersed on the component support member  220 , out of the lead components  410  that are dispersed on the component support member  220 , a probability of the lead components  410  that are specified as the pickup target component being present, that is, a probability of being holdable by the suction nozzle  332  (hereinafter, described as “holding probability”) is calculated. 
     Specifically, the total number (11) of the lead components  410  that are dispersed on the component support member  220  is calculated based on the captured image data of the component support member  220  by the camera  290 . Then, a ratio of the number (four) of the pickup target components with respect to the number (11) of the lead components  410  is calculated as the holding probability. The calculated holding probability is stored in the storage device  456  in each component that is supplied by the bulk component supply device  32 . Note that, the holding probability is used during return work of the component that is described later in detail. 
     Then, when the pickup target components are specified, the pickup target components are held by the suction nozzle  332  of the component holding head  302 . When the pickup target component is sucked and held by the suction nozzle  332 , the suction nozzle  332  is positioned at the non-pivoting position. Then, after the lead components  410  are held by the suction nozzle  332 , the component holding head  302  is caused to move above the component carrier  388 . At this time, the component carrier  388  moves to the component receiving position through the operation of the component carrier moving device  390 . When the component holding head  302  moves above the component carrier  388 , the suction nozzle  332  is caused to pivot to the pivoting position. Note that, the suction nozzle  332  rotates through the operation of the nozzle rotation device  335  such that the leads  414  of the lead component  410  which is held by the suction nozzle  332  at the pivoting position faces downward in the vertical direction. 
     When the component holding head  302  is caused to move above the component carrier  388 , the lead component  410  which is in a state in which the leads  414  face downward in the vertical direction is inserted into the component receiving recessed section  416  of the component receiving member  392 . Thereby, as illustrated in  FIG. 7 , the lead components  410  are placed on the component receiving member  392  in a state in which the leads  414  face downward in the vertical direction. 
     Then, when the lead components  410  are placed on the component receiving member  392 , the component carrier  388  moves to the component supply position through the operation of the component carrier moving device  390 . Since the component carrier  388  which is moved to the component supply position is positioned in the movement range of the work heads  60  and  62 , the lead component  410  is supplied at this position in the bulk component supply device  32 . In this manner, in the bulk component supply device  32 , the lead component  410  is supplied in a state in which the leads  414  face downward, and the upper face  502  that faces the bottom face  500  to which the leads  414  are connected faces upward. Therefore, the suction nozzle  66  of the work heads  60  and  62  becomes capable of appropriately holding the lead components  410 . 
     (b) Collection of Lead Components 
     In addition, in the bulk component supply device  32 , it is possible to collect the lead components  410  that are dispersed on the component support member  220 . Specifically, the component support member  220  is caused to move below the component feeder  88  through the operation of the component support member moving device  222 . In this case, as illustrated in  FIG. 11 , the lead components  410  on the component support member  220  are blocked by the inclined plate  152  of the component feeder  88 , and the lead components  410  on the component support member  220  are scraped off the inside of the component collecting container  262 . 
     Next, the component collecting container  262  is lifted by the operation of the container lifting and lowering device  260 . At this time, as illustrated in  FIG. 5 , the protruding pin  272  which is arranged on the component collecting container  262  engages with the engaging block  274  which is arranged on the inside of the side frame sections  190 . Thereby, the component collecting container  262  rotates, and the lead components  410  inside the component collecting container  262  are returned to the inner portion of the component storage device  100 . 
     Then, as described above, by grasping the grip  104  of the component feeder  88 , the operator releases locking of the component feeder  88  and the component feeder  88  is removed from between the pair of side frame sections  190  by lifting the component feeder  88 . Thereby, the lead components  410  are collected from the component feeder  88  outside of the bulk component supply device  32 . 
     (c) Resupply of Lead Components 
     In addition, in the bulk component supply device  32 , the lead components  410  that are returned from the component support member  220  to the component storage device  100  may be redispersed on the component support member  220  without being collected from the component storage device  100 , and according to the procedure described above, the lead components  410  may be resupplied by placing on the component receiving member  392 . 
     Specifically, as described above, only the lead components  410  with the second posture and the third posture out of the lead components  410  that are dispersed on the component support member  220  are transferred to the component receiving member  392  and the lead components  410  with other postures are caused to remain on the component support member  220 . Therefore, when all of the lead components  410  with the second posture and the third posture are transferred from the component support member  220  to the component receiving member  392 , only the lead components  410  with a nontransferable posture remain in the component support member  220 , and the bulk component supply device  32  is not able to supply the lead components  410 . In this manner, in a case where only the lead components  410  with the nontransferable posture remain on the component support member  220 , the remaining lead components  410  are returned from the component support member  220  to the component storage device  100 , and are redispersed from the component storage device  100  on the component support member  220 . At this time, the lead components  410  that are in various postures of the first to fifth postures are dispersed on the component support member  220 . Thereby, it is possible to retransfer the lead components  410  with the second posture and the third posture from the component support member  220  to the component receiving member  392 . 
     In addition, not only in a case where only the lead components  410  with the nontransferable posture remain on the component support member  220 , but also when the lead components  410  with the transferable posture remain on the component support member  220 , the remaining lead components  410  may be returned from the component support member  220  to the component storage device  100 , and may be redispersed from the component storage device  100  on the component support member  220 . 
     In detail, during mounting work by the component mounting machine  10 , the number of necessary lead components  410  (hereinafter, described as the “necessary number of components”) in the mounting work is transferred from the integrated control device  450  to the individual control device  452  of the bulk component supply device  32 . Then, in the individual control device  452  to which the necessary number of components are transferred, the number of suppliable lead components  410  is calculated. That is, the component support member  220  on which the lead components  410  are dispersed is imaged by the camera  290 , and the number of lead components  410  that are holdable by the suction nozzle  332  (hereinafter, described as the “number of holdable components”), that is, the number of lead components  410  with the second posture and the third posture is calculated based on the captured image data. 
     Then, it is determined in the individual control device  452  whether or not the necessary number of components exceeds the number of holdable components. That is, it is determined whether or not it is possible to supply the lead components  410  of the necessary number of components from the component support member  220 . At this time, in a case where the necessary number of components does not exceed the number of holdable components, that is, it is determined that it is possible to supply the lead components  410  of the necessary number of components from the component support member  220 , according to the procedure described above, the lead components  410  of the necessary number of components is transferred and supplied from the component support member  220  to the component receiving member  392 . Specifically, as illustrated in  FIG. 10 , for example, in a case where the number of holdable components is four, if the necessary number of components is three, according to the procedure described above, three lead components  410  are sequentially transferred and supplied to the component receiving member  392 . 
     Meanwhile, in a case where the necessary number of components exceeds the number of holdable components, that is, it is determined that it is not possible to supply the lead components  410  of the necessary number of components from the component support member  220 , the components from the component support member  220  return to the component storage device  100 , and it is necessary to disperse the components from the component storage device  100  on the component support member  220 , but a certain amount of time is necessary in return work to the component storage device  100  and the dispersal work of the component support member  220 . Therefore, a performance timing of the return work to the component storage device  100  and the dispersal work of the component support member  220  are determined according to a progress state of the mounting work by the component mounting machine  10 , a work condition of the component carrier  388 , and the like. 
     In detail, the progress state of the mounting work by the component mounting machine  10  is managed in the integrated control device  450 . Therefore, in the individual control device  452  of the bulk component supply device  32 , when it is determined that the necessary number of components exceeds the number of holdable components, the individual control device  452  carries out an inquiry of the progress state of the mounting work by the component mounting machine  10  in the integrated control device  450  and the remaining time until the mounting work of the components that are supplied from the bulk component supply device  32  is performed (hereinafter, described as “remaining time”) is acquired from the integrated control device  450 . That is, the individual control device  452  acquires, as the remaining time, from the integrated control device  450  a time from an inquiry time from the individual control device  452  to the integrated control device  450  until a prearranged start time of the mounting work using the components that are supplied from the bulk component supply device  32 . 
     In addition, in a case where in the individual control device  452 , the component carrier  388  is not positioned at the component receiving position, the necessary time until the component carrier  388  moves to the component receiving position (hereinafter, described as “ necessary time”) is acquired. Thereby, for example, when the component carrier  388  supplies the components in the component supply position, a certain amount of time is necessary as a time in which the component carrier  388  moves up to the component receiving position since it is not possible to move the component carrier  388  from the component supply position. Note that, the necessary time is calculated by the individual control device  452  since the operation of the component carrier  388  is controlled by the individual control device  452 . 
     When acquiring the remaining time and the necessary time, the individual control device  452  determines whether or not the remaining time and the necessary time exceed a threshold time. Note that, the threshold time is set to a certain time that is necessary in the return work to the component storage device  100  and the dispersal work of the component support member  220 . Then, in a case of determining that the remaining time and necessary time do not exceed the threshold time, the individual control device  452  performs the return work to the component storage device  100  and the dispersal work of the component support member  220  after the lead components  410  that are transferable from the component support member  220  are all transferred to the component receiving member  392 . Then, the components that are redispersed on the component support member  220  are transferred to the component receiving member  392 . 
     Specifically, as illustrated in  FIG. 10 , for example, in a case where the number of holdable components is four, if the necessary number of components is six, first, four lead components  410  are sequentially transferred and supplied to the component support member  220 . Next, the lead components  410  are returned from the component support member  220  to the component storage device  100 , and are redispersed from the component storage device  100  on the component support member  220 . Then, two lead components  410  from the component support member  220  are sequentially transferred and supplied to the component support member  220 . Thereby, the lead components  410  of the necessary number of components are supplied by the bulk component supply device  32 . 
     Meanwhile, in a case of determining that at least one of the remaining time and the necessary time exceed the threshold time, the individual control device  452  returns the lead components  410  from the component support member  220  to the component storage device  100  without performing transfer work of the lead components  410  from the component support member  220 , and redisperses the lead components  410  from the component storage device  100  on the component support member  220 . Then, the lead components  410  of the necessary number of components are transferred to the component receiving member  392  from the components that are redispersed on the component support member  220 . 
     Specifically, as illustrated in  FIG. 10 , for example, in a case where the number of holdable components is four, if the necessary number of components is six, the individual control device  452  returns the lead components  410  from the component support member  220  to the component storage device  100  without transferring the lead components  410  from the component support member  220 , and redisperses the lead components  410  from the component storage device  100  on the component support member  220 . At this time, for example, the component carrier  388  that is moved to the component supply position moves to the component receiving position. Then, six lead components  410  from the components that are redispersed on the component support member  220  are sequentially transferred and supplied to the component support member  220 . At this time, the component mounting machine  10  performs other mounting work, and supplies the lead components  410  utilizing the time of the mounting work. 
     In this manner, in the bulk component supply device  32 , the return work to the component storage device  100  and the dispersal work of the component support member  220  are performed utilizing free time until the mounting work in which the components that are supplied by the bulk component supply device  32  are used and free time until the component carrier  388  moves to the component receiving position. Thereby, it is possible to supply the lead components  410  of the necessary number of components without stopping the mounting work by the component mounting machine  10  and it is possible to improve the cycle time. 
     However, there is a concern that the cycle time worsens even if the return work to the component storage device  100  and the dispersal work of the component support member  220  are performed utilizing free time of the mounting work by the component mounting machine  10 , free time until the component carrier  388  moves to the component receiving position, and the like. That is, according to the shape of the lead components  410 , the holding probability may be equivalently low, and in such a case, there is a concern that even if the return work to the component storage device  100  and the dispersal work of the component support member  220  are performed, the number of holdable lead components  410  from the component support member  220  does not reach the necessary number of components or more. 
     Specifically, as illustrated in  FIG. 10 , for example, in a case where the number of holdable components is four, if the necessary number of components is six, when determining that at least one of the remaining time and the necessary time exceed the threshold time, the return work to the component storage device  100  and the dispersal work of the component support member  220  are performed without transferring the lead components  410  from the component support member  220 . At this time, if the holding probability of the lead components  410  is approximately  20 %, even if the lead components  410  from the component support member  220  are returned to the component storage device  100  and redispersed from the component storage device  100  on the component support member  220 , there is a high possibility that the number of holdable components is two to three (11 (total number of lead components  410  on the component support member  220 )×20%), and it is not possible to supply six lead components  410 . In such a case, there is a concern that it is necessary to carry out again return work to the component storage device  100  and dispersal work of the component support member  220 , and the cycle time worsens. 
     Therefore, in the bulk component supply device  32 , it is determined whether or not the holding probability exceeds the threshold in a case where at least one of the remaining time and the necessary time exceed the threshold time. Then, in a case of determining that the holding probability does not exceed the threshold in the same manner as in a case of determining that the remaining time and necessary time do not exceed the threshold time, the individual control device  452  performs the return work to the component storage device  100  and the dispersal work of the component support member  220  after the lead components  410  that are transferable from the component support member  220  are all transferred to the component receiving member  392 . Then, the components that are redispersed on the component support member  220  are transferred to the component receiving member  392 . 
     Meanwhile, in a case of determining that the holding probability exceeds the threshold, as described above, the individual control device  452  performs the return work to the component storage device  100  and the dispersal work of the component support member  220  without carrying out transfer work of the lead components  410  from the component support member  220 , and the lead components  410  of the necessary number of components are supplied from the redispersed components. That is, in a case where three conditions are satisfied of the necessary number of components exceeding the holdable component number, at least one of the necessary time and the remaining time exceeding the threshold time, and the holding probability exceeding the threshold, the return work to the component storage device  100  and the dispersal work of the component support member  220  are performed utilizing the free time. Thereby, it is possible to reliably improve the cycle time. 
     Note that, as described above, the holding probability is calculated for each component that is dispersed on the component support member  220  and is stored in the storage device  456  in each component. Therefore, the holding probability is a value close to an actual probability since the components are reformed for each dispersal on the component support member  220 . In addition, the threshold of the holding probability is varied according to the necessary number of components, the holding probability, and the like. 
     &lt;Control Program&gt; 
     Component supply work of the bulk component supply device  32  described above is carried out by performing a control program in the individual control device  452 . A flow when the control program is performed will be described below using  FIG. 12  and  FIG. 13 . 
     First, in the control program, the individual control device  452  acquires the necessary number of components from the integrated control device  450  (S 100 ). Next, the individual control device  452  calculates the number of holdable components (S 102 ). Then, the individual control device  452  determines whether or not the necessary number of components exceeds the number of holdable components (S 104 ). In a case where it is determined that the necessary number of components exceeds the number of holdable components (YES in S 104 ), the individual control device  452  acquires the remaining time and the necessary time (S 106 ). 
     Next, the individual control device  452  determines whether or not at least one of the acquired remaining time and the necessary time exceed a threshold time (S 108 ). In a case where at least one of the remaining time and the necessary time exceed the threshold time (YES in S 108 ), the individual control device  452  determines whether or not the holding probability exceeds the threshold (S 110 ). In a case of determining that the holding probability exceeds the threshold (YES in S 110 ), the individual control device  452  performs the return work to the component storage device  100  and the dispersal work of the component support member  220  (S 112 ). 
     Next, the component support member  220  on which the components are dispersed is imaged by the camera  290 , and the individual control device  452  calculates the holding probability based on the captured image data (S 114 ). Then, the calculated holding probability is stored in the storage device  456  in each component (S 116 ). Next, the pickup target components from the component support member  220  are held by the suction nozzle  332 , and the lead components  410  are supplied by moving to the component receiving member  392  (S 118 ). Thereby, performance of the control program ends. 
     In addition, in a case where it is determined that the necessary number of components does not exceed the number of holdable components in S 104  (NO in S 104 ), in a case where it is determined that at least one of the remaining time and the necessary time do not exceed the threshold time in S 108  (NO in S 108 ), and in a case where it is determined that the holding probability does not exceed the threshold in S 110  (NO in S 110 ), the process in  5118  is performed and the control program ends. 
     Note that, as illustrated in  FIG. 8 , the individual control device  452  performs the control program, and has a component number acquisition section  520 , a component number calculating section  522 , a first determination section  524 , a probability calculating section  526 , a second determination section  528 , a time acquisition section  530 , a third determination section  532 , and a component dispersing section  534 . The component number acquisition section  520  is a functional section for performing the process of  5100  of the control program, that is, a process for acquiring the necessary number of components from the integrated control device  450 . The component number calculating section  522  is a functional section for performing the process of  5102  of the control program, that is, a process for calculating the number of the holdable components. The first determination section  524  is a functional section for performing the process of S 104  of the control program, that is, a process for determining whether or not the necessary number of components exceeds the number of holdable components. The probability calculating section  526  is a functional section for performing the process of S 114  of the control program, that is, a process for calculating the holding probability. The second determination section  528  is a functional section for performing the process of S 110  of the control program, that is, a process for determining whether or not the holding probability exceeds the threshold. The time acquisition section  530  is a functional section for performing the process of S 106  of the control program, that is, a process for acquiring the remaining time and the necessary time. The third determination section  532  is a functional section for performing the process of S 108  of the control program, that is, a process for determining whether or not at least one of the remaining time and necessary time exceeds the threshold time. The component dispersing section  534  is a functional section for performing the process of S 112  of the control program, that is, a process for performing return work to the component storage device  100  and the dispersal work of the component support member  220 . 
     In addition, the present disclosure is not limited to the applied example described above, and it is possible to carry out the present disclosure in various aspects subjected to various modifications and improvements based on the knowledge of a person skilled in the art. Specifically, for example, in the applied example, in a case where three conditions are satisfied of the necessary number of components exceeding the holdable component number, at least one of the necessary time and the remaining time exceeding the threshold time, and the holding probability exceeding the threshold, the return work and the like to the component storage device  100  in which the free time is utilized is performed, and at least in a case where a condition is satisfied in which the necessary number of components exceeds the number of holdable components, the return work and the like to the component storage device  100  in which the free time is utilized is performed. That is, it is possible to arbitrary set two conditions of at least one of the necessary time and the remaining time exceeding the threshold time, and the holding probability exceeding the threshold. 
     In addition, in the applied example, the present disclosure is applied to the lead components  410  that have the leads  414 , but it is possible to apply the present disclosure to various types of components. Specifically, for example, it is possible to apply the present disclosure to a configuration component of a solar cell, a configuration component of a power module, an electronic circuit component that does not have a lead, and the like. 
     REFERENCE SIGNS LIST 
       10 : COMPONENT MOUNTING MACHINE (MOUNTING WORK MACHINE),  24 : COMPONENT MOUNTING DEVICE,  66 : SUCTION NOZZLE (SECOND COMPONENT HOLDING TOOL),  32 : BULK COMPONENT SUPPLY DEVICE (COMPONENT SUPPLY DEVICE),  84 : IMAGING DEVICE,  92 : COMPONENT RETURN DEVICE,  100 : COMPONENT STORAGE DEVICE,  220 : COMPONENT SUPPORT MEMBER (COMPONENT SUPPORT SECTION),  332 : SUCTION NOZZLE (FIRST COMPONENT HOLDING TOOL),  392 : COMPONENT RECEIVING MEMBER (PLACEMENT SECTION),  452 : INDIVIDUAL CONTROL DEVICE (CONTROL DEVICE),  456 : STORAGE DEVICE,  520 : COMPONENT NUMBER ACQUISITION SECTION,  522 : COMPONENT NUMBER CALCULATING SECTION,  524 : FIRST DETERMINATION SECTION,  526 : PROBABILITY CALCULATING SECTION,  528 : SECOND DETERMINATION SECTION,  530 : TIME ACQUISITION SECTION,  532 : THIRD DETERMINATION SECTION,  534 : COMPONENT DISPERSING SECTION