Patent Publication Number: US-11382251-B2

Title: Component mounting system, component mounting device, and component mounting method

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is a National Stage of International Patent Application No. PCT/JP2018/014715, filed Apr. 6, 2018, the entire content of which is incorporated herein by reference. 
     BACKGROUND 
     Technical Field 
     The present disclosure relates to a component mounting system, a component mounting device, and a component mounting method. 
     Background Art 
     Conventionally, a component mounting device is known. Such a component mounting device is disclosed in Japanese Patent Laid-Open No. 2015-095586, for example. 
     Japanese Patent Laid-Open No. 2015-095586 discloses a component transfer device (component mounting device) including a mounting head that mounts components on a substrate and a controller that detects a component drop during the component mounting operation. In this component transfer device, when a component drop is detected during the component mounting operation, the substrate on which the components are being mounted is set as a foreign matter inspection target substrate on which a foreign matter inspection is performed in a downstream substrate inspection device. 
     SUMMARY 
     However, in the component transfer device (component mounting device) disclosed in Japanese Patent Laid-Open No. 2015-095586, when a component drop is detected during the component mounting operation, the foreign matter inspection of the substrate can be performed, but when a situation, in which it is desirable to inspect the substrate, other than the component drop occurs, no additional inspection such as the foreign matter inspection is performed. Therefore, there is a problem that an abnormality of the substrate on which the components have been mounted may be missed. 
     Therefore, the present disclosure provides a component mounting system, a component mounting device, and a component mounting method capable of significantly reducing or preventing missing of an abnormality of a substrate on which components have been mounted. 
     A component mounting system according to a first aspect of the present disclosure includes a component mounting device including a component mounting unit configured to mount a component on a substrate, a controller, and a server configured to be communicable with the controller. The controller is configured or programmed to acquire a plurality of types of operating state changes that are likely to cause a quality defect, and to transmit, to the server, information according to the types of the operating state changes, and the server is configured to teach an inspection type for the substrate based on the information according to the types of the operating state changes. 
     The component mounting system according to the first aspect of the present disclosure is configured as described above such that the substrate can be inspected based on the plurality of types of operating state changes that are likely to cause a quality defect, and thus the inspection can be performed even in cases other than a component drop. Consequently, it is possible to reliably inspect the substrate, the quality of which is likely to be poor, and thus it is possible to significantly reduce or prevent missing of an abnormality of the substrate on which the component has been mounted. In addition, the inspection can be performed according to the operating state changes, and thus a required inspection can be efficiently performed, and the inspection can be accurately performed. Moreover, the substrate having a risk of quality defect can be removed as necessary, and thus it is possible to significantly reduce or prevent outflow of the substrate having a risk of quality defect from the component mounting system. 
     In the aforementioned component mounting system according to the first aspect, the operating state changes preferably relate to at least one of a mounting operation abnormality, a mounting operation stop, and a mounting condition change. Accordingly, the inspection can be performed based on the plurality of types of operating state changes that relate to at least one of the mounting operation abnormality, the mounting operation stop, and the mounting condition change, and thus it is possible to effectively significantly reduce or prevent missing of the abnormality of the substrate on which the component has been mounted. 
     In this case, the operating state changes that relate to the mounting operation abnormality preferably include a drop of the component, a mounting abnormality during mounting, and a deviation of a center of a recognized component by a threshold or more, the operating state changes that relate to the mounting operation stop preferably include an emergency stop during component mounting by a user&#39;s operation and opening of a cover of the component mounting device, and the operating state changes that relate to the mounting condition change preferably include replacement of a nozzle of the component mounting unit configured to suction the component and replacement of the component to be supplied. Accordingly, the substrate can be inspected for each of the plurality of operating state changes as described above, and thus it is possible to more effectively significantly reduce or prevent missing of the abnormality of the substrate on which the component has been mounted. 
     In the aforementioned component mounting system according to the first aspect, the component mounting device is preferably configured to allow a plurality of substrates to be arranged therein, and the server is preferably configured to teach a substrate to be inspected among the plurality of substrates in the component mounting device based on the information according to the types of the operating state changes. Accordingly, the number of substrates to be inspected can be changed according to the operating state changes, and thus the inspection time can be shortened as compared with a case in which all the substrates are constantly inspected. 
     In this case, the server is preferably configured to instruct to inspect the substrate on which mounting is being performed in a case of the operating state changes of replacement of a nozzle of the component mounting unit configured to suction the component, replacement of the component to be supplied, a mounting abnormality during mounting, a deviation of a center of a recognized component by a threshold or more, and an emergency stop during component mounting by a user&#39;s operation, and to instruct to inspect all the substrates in the component mounting device in a case of the operating state changes of a drop of the component and opening of a cover of the component mounting device. Accordingly, it is not necessary to inspect all the substrates in the case of the operating state changes of the replacement of the nozzle of the component mounting unit that suctions the component, the replacement of the component to be supplied, the mounting abnormality during mounting, the deviation of the center of the recognized component by the threshold or more, and the emergency stop during component mounting by the user&#39;s operation, and thus an increase in the inspection time can be significantly reduced or prevented. Furthermore, there is a possibility that the substrate other than the relevant substrate on which mounting is being performed in the component mounting device is also affected in the case of the operating state changes of the drop of the component and the opening of the cover of the component mounting device, and thus all the substrates are inspected such that it is possible to more reliably inspect the substrate, the quality of which is likely to be poor. 
     The aforementioned component mounting system according to the first aspect preferably further includes a notifier provided in the component mounting device or a device downstream of the component mounting device, the notifier being configured to announce the inspection type, and the server is preferably configured to indicate the inspection type for the substrate with the notifier based on the information according to the types of the operating state changes. Accordingly, the user can inspect the substrate according to the types of the operating state changes based on the announcement from the notifier, and thus even when a substrate inspection device is not provided, it is possible to significantly reduce or prevent missing of the abnormality of the substrate on which the component has been mounted. 
     In this case, the component mounting system preferably further includes a buffer conveyor configured to receive the substrate on which the component has been mounted, and the server is preferably configured to indicate the inspection type for the substrate with the notifier based on information about the operating state changes, and to instruct to stop the substrate to be inspected on the buffer conveyor. Accordingly, the user can take out the substrate to be inspected from the buffer conveyor and inspect the substrate. 
     The aforementioned component mounting system according to the first aspect preferably further includes a substrate inspection device arranged downstream of the component mounting device, and the server is preferably configured to teach the inspection type for the substrate to the substrate inspection device based on the information according to the types of the operating state changes. Accordingly, the substrate inspection device can inspect the substrate according to the types of the operating state changes, and thus the work burden on the user can be reduced as compared with a case in which the user inspects the substrate. 
     In this case, the substrate inspection device is preferably configured to perform an unusual type of substrate inspection based on the information according to the types of the operating state changes. Accordingly, it is possible to perform the unusual type of substrate inspection on the substrate, the quality of which is likely to be poor, and thus an abnormality can be easily and accurately detected by the substrate inspection by the substrate inspection device. 
     In the aforementioned component mounting system according to the first aspect, the component mounting device preferably includes a plurality of component mounting devices provided in series, and the server is preferably configured to teach the inspection type for the substrate to a most downstream component mounting device among the plurality of component mounting devices or a device further downstream of the most downstream component mounting device when the operating state changes are acquired in the component mounting device. Accordingly, in the component mounting system in which the plurality of component mounting devices are provided in series, even when the substrate, the quality of which is likely to be poor, occurs, the substrate is conveyed to the most downstream component mounting device. Therefore, it is not necessary to interrupt the component mounting operation on another substrate. Consequently, it is possible to significantly reduce or prevent a decrease in the work efficiency of the component mounting operation on the substrate. The term “series” refers to a state in which the plurality of component mounting devices are connected so as to sequentially mount components on the same substrate. That is, it includes a case in which the plurality of component mounting devices are arranged on a straight line, a case in which the plurality of component mounting devices are arranged on a bent line, etc. 
     A component mounting device according to a second aspect of the present disclosure includes a component mounting unit configured to mount a component on a substrate, and a controller, and the controller is configured or programmed to acquire a plurality of types of operating state changes that are likely to cause a quality defect, and to transmit information such that a type of substrate inspection according to the types of the operating state changes is performed. 
     The component mounting device according to the second aspect of the present disclosure is configured as described above such that the substrate can be inspected based on the plurality of types of operating state changes that are likely to cause a quality defect, and thus the inspection can be performed even in cases other than a component drop. Consequently, it is possible to reliably inspect the substrate, the quality of which is likely to be poor, and thus it is possible to significantly reduce or prevent missing of an abnormality of the substrate on which the component has been mounted. In addition, the inspection can be performed according to the operating state changes, and thus a required inspection can be efficiently performed, and the inspection can be accurately performed. 
     A component mounting method according a third aspect of the present disclosure includes mounting a component on a substrate, acquiring a plurality of types of operating state changes that are likely to cause a quality defect, and teaching an inspection type for the substrate according to the types of the operating state changes. 
     The component mounting method according to the third aspect of the present disclosure is configured as described above such that the substrate can be inspected based on the plurality of types of operating state changes that are likely to cause a quality defect, and thus the inspection can be performed even in cases other than a component drop. Consequently, it is possible to reliably inspect the substrate, the quality of which is likely to be poor, and thus it is possible to significantly reduce or prevent missing of an abnormality of the substrate on which the component has been mounted. In addition, the inspection can be performed according to the operating state changes, and thus a required inspection can be efficiently performed, and the inspection can be accurately performed. 
     According to the present disclosure, as described above, it is possible to significantly reduce or prevent missing of the abnormality of the substrate on which the components have been mounted. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is block diagram showing a component mounting system according to a first embodiment of the present disclosure; 
         FIG. 2  is a diagram showing the overall structure of a component mounting device in the component mounting system according to the first embodiment of the present disclosure; 
         FIG. 3  is a schematic view showing the appearance of the component mounting device in the component mounting system according to the first embodiment of the present disclosure; 
         FIG. 4  is a block diagram showing the control structure of the component mounting device in the component mounting system according to the first embodiment of the present disclosure; 
         FIG. 5  is a diagram for illustrating a head unit provided in the component mounting device of the component mounting system according to the first embodiment of the present disclosure; 
         FIG. 6  is a diagram for illustrating a substrate arranged inside the component mounting device in the component mounting system according to the first embodiment of the present disclosure; 
         FIG. 7  is a flowchart for illustrating a mounting operation control process of the component mounting device in the component mounting system according to the first embodiment of the present disclosure; 
         FIG. 8  is a block diagram showing a component mounting system according to a second embodiment of the present disclosure; and 
         FIG. 9  is a flowchart for illustrating a mounting operation control process of a component mounting device in the component mounting system according to the second embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     Embodiments embodying the present disclosure are hereinafter described on the basis of the drawings. 
     First Embodiment 
     The structure of a component mounting system  100  according to a first embodiment of the present disclosure is now described with reference to  FIGS. 1 to 6 . 
     (Structure of Component Mounting System) 
     The component mounting system  100  according to the first embodiment is configured to mount components E on a substrate S and manufacture the substrate S on which the components E have been mounted. The components E include small electronic components such as LSIs, ICs, transistors, capacitors, and resistors. As shown in  FIG. 1 , the component mounting system  100  includes a server  1 , a printer  2 , component mounting devices  3 , and a buffer conveyor  4 . A plurality of component mounting devices  3  ( 3   a ,  3   b , and  3   c ) are provided downstream of the printer  2  along a substrate manufacturing line. 
     In the component mounting system  100 , the substrate S is conveyed from the upstream side (right side) to the downstream side (left side) along the substrate manufacturing line. In addition, each device (the printer  2  and the component mounting devices  3 ) included in the component mounting system  100  is a self-supporting device including a controller, and the operation of each device is individually controlled by its controller. The server  1  has a role of executing a control program (production program) to control the entire component mounting system  100 . In other words, the server  1  and each device transmit and receive information regarding a production plan as needed such that the substrate S on which the components E have been mounted is produced in the component mounting system  100 . 
     The structure of each device of the component mounting system  100  is now described. 
     The server  1  is configured to control each device of the component mounting system  100 . 
     The printer  2  is a screen printer and has a function of applying cream solder to a mounting surface of the substrate S. Furthermore, the printer  2  is configured to transfer the substrate S on which solder printing has been performed to the downstream component mounting device  3  ( 3   a ). 
     The component mounting devices  3  have a function of mounting the components E at predetermined mounting positions on the substrate S on which the cream solder has been printed. The plurality of component mounting devices  3  ( 3   a  to  3   c ) are arranged along the conveyance direction of the substrate S. The plurality of component mounting devices  3  are arranged in the order of the component mounting device  3   a , the component mounting device  3   b , and the component mounting device  3   c  from the upstream side in the conveyance direction of the substrate S. The component mounting devices  3   a  to  3   c  have the same structure. As shown in  FIG. 2 , the component mounting devices  3  ( 3   a  to  3   c ) each include a base  31 , a pair of conveyors  32 , component feeders  33 , a head unit  34 , a support  35 , a pair of rails  36 , component recognition imagers  37 , an imaging unit  38 , and a controller  39 . 
     The component mounting devices  3  are covered with a housing  30   a , as shown in  FIG. 3 . A cover  30   b  is provided on the housing  30   a . The cover  30   b  is opened such that a user can access the inside of each of the component mounting devices  3 . Furthermore, the operation of each of the component mounting devices  3  is stopped when the cover  30   b  is opened. That is, each of the component mounting devices  3  is configured to perform the component mounting operation with the cover  30   b  being closed. 
     The component mounting devices  3  each include a communicator  301 , a notifier  302 , an emergency stop button  303 , and a cover opening/closing detector  304 , as shown in  FIG. 4 . 
     As shown in  FIG. 2 , the pair of conveyors  32  are installed on the base  31 , and are configured to convey the substrate S in an X direction. Furthermore, the pair of conveyors  32  are configured to hold the substrate S being conveyed in a stopped state at a mounting operation position. In addition, an interval between the pair of conveyors  32  in a direction Y can be adjusted according to the dimensions of the substrate S. 
     The component feeders  33  are arranged outside (Y1 and Y2 sides) of the pair of conveyors  32 . A plurality of tape feeders  331  are arranged in the component feeders  33 . 
     The tape feeders  331  hold reels (not shown) on which tapes that hold a plurality of components E at a predetermined interval are wound. The tape feeders  331  are configured to supply the components E from the tips of the tape feeders  331  by rotating the reels to feed the tapes that hold the components E. When the tape that holding the components E is finished, it is replaced with the next tape (reel). 
     The head unit  34  is provided so as to move between above the pair of conveyors  32  and above the component feeders  33 . The head unit  34  includes a plurality of (five) mounting heads  341  including nozzles  341   a  (see  FIG. 5 ) attached to their lower ends and a substrate recognition imager  342 . The head unit  34  includes a Z-axis motor  343  (see  FIG. 4 ) and an R-axis motor  344  (see  FIG. 4 ). Furthermore, an air pressure generator  345  (see  FIG. 4 ) that generates a negative pressure and a positive pressure at the tips of the nozzles  341   a  of the mounting heads  341  is connected to the head unit  34  via a pipe. The mounting heads  341  are an example of a “component mounting unit” in the claims. 
     The mounting heads  341  are configured to mount the components E on the substrate S. Specifically, the mounting heads  341  are configured to be movable up and down (movable in a Z direction), and are configured to suction and hold the components E supplied from the tape feeders  331  by a negative pressure generated at the tips of the nozzles  341   a  by the air pressure generator  345  and to mount the components E at the mounting positions on the substrate S. 
     The substrate recognition imager  342  is configured to image fiducial marks F of the substrate S in order to recognize the position and the orientation of the substrate S. The positions of the fiducial marks F are imaged and recognized such that the mounting positions of the components E on the substrate S can be accurately acquired. The substrate recognition imager  342  is configured to image the substrate S from above (Z1 direction side). 
     The Z-axis motor  343  is configured to move each of the plurality of mounting heads  341  in an upward-downward direction (Z direction). The R-axis motor  344  is configured to rotate each of the mounting heads  341  about a central axis in the upward-downward direction (Z direction). The air pressure generator  345  is configured to supply a positive pressure and a negative pressure to the tips of the nozzles  341   a . Due to the negative pressure generated by the air pressure generator  345 , the components E are suctioned by the tips of the nozzles  341   a . Furthermore, due to the positive pressure generated by the air pressure generator  345 , the components E are separated from the tips of the nozzles  341   a.    
     The support  35  includes an X-axis motor  351 . The support  35  is configured to move the head unit  34  in the X direction along the support  35  by driving the X-axis motor  351 . Opposite ends of the support  35  are supported by the pair of rails  36 . 
     The pair of rails  36  are fixed on the base  31 . A rail  36  on the X1 side includes a Y-axis motor  361 . The rails  36  are configured to move the support  35  in the Y direction orthogonal to the X direction along the pair of rails  36  by driving the Y-axis motor  361 . The head unit  34  is movable in the X direction along the support  35 , and the support  35  is movable in the Y direction along the rails  36  such that the head unit  34  is movable in the X and Y directions. 
     The component recognition imagers  37  are fixed on the upper surface of the base  31 . The component recognition imagers  37  are arranged outside (Y1 and Y2 sides) of the pair of conveyors  32 . The component recognition imagers  37  are configured to image the components E suctioned by the nozzles  341   a  of the mounting heads  341  from below (Z2 direction side) in order to recognize the suction states (suction orientations) of the components E prior to mounting of the components E. Thus, the suction states of the components E suctioned by the nozzles  341   a  of the mounting heads  341  can be acquired. For example, the suction positions of the components E with respect to the nozzles  341   a  can be acquired by imaging by the component recognition imagers  37 . Furthermore, the amounts of rotation of the components E with respect to the nozzles  341   a  in a horizontal plane can be acquired by imaging by the component recognition imagers  37 . Accordingly, it is possible to correct the positions and the rotation of the components E based on the imaging results. 
     The imaging unit  38  is attached to the head unit  34 . Thus, as the head unit  34  moves in the X and Y directions, the imaging unit  38  moves in the X and Y directions together with the head unit  34 . The imaging unit  38  is configured to image the suction positions of the components E before and after suction when the components E are suctioned. As shown in  FIG. 5 , the imaging unit  38  is configured to image the mounting positions of the components E before and after mounting when the components E are mounted. 
     The imaging unit  38  is also configured to capture images for measuring the heights of the mounting positions on the substrate S. As shown in  FIG. 5 , the imaging unit  38  includes a plurality of cameras  381  and illuminators  382 . Thus, the imaging unit  38  can image the suction positions and the mounting positions from a plurality of directions (angles). The imaging unit  38  also includes a plurality of cameras  381  of a stereo optical system. Accordingly, based on the imaging results of the imaging unit  38 , three-dimensional position information about the suction positions and the mounting positions can be acquired. Furthermore, based on the images captured by the imaging unit  38  before and after suction, suction determination of the components E is performed. In addition, based on the images captured by the imaging unit  38  before and after mounting, mounting determination of the components E is performed. The suction determination and the mounting determination of the components E each are performed using a difference between the preceding and succeeding images, for example. 
     The illuminators  382  are configured to emit light when the cameras  381  capture images. The illuminators  382  are provided around the cameras  381 . The illuminators  382  each include a light source such as an LED (light-emitting diode). 
     The controller  39  includes a CPU, and is configured or programmed to control the overall operation of the component mounting device  3  such as the substrate S conveying operation performed by the pair of conveyors  32 , the mounting operation performed by the head unit  34 , and the imaging operations performed by the component recognition imagers  37 , the imaging unit  38 , and the substrate recognition imager  342 . 
     The communicator  301  is configured to be able to communicate with an external device. That is, the controller  39  can communicate with the server  1  via the communicator  301 . The communicator  301  is configured to communicate with an external device by wire or wirelessly. 
     The notifier  302  is configured to announce the state of the component mounting device  3 . The notifier  302  includes a display such as a liquid crystal display. The notifier  302  is configured to display the operating state of the component mounting device  3 . 
     The emergency stop button  303  is a button for stopping the operation of the component mounting device  3  when the user operates the emergency stop button  303 . 
     The cover opening/closing detector  304  is configured to detect opening/closing of the cover  30   b . When the cover opening/closing detector  304  detects opening of the cover  30   b , the operation of the component mounting device  3  is stopped. 
     As shown in  FIG. 6 , inside the component mounting device  3 , a plurality of substrates S can be arranged. In the component mounting device  3 , the substrate S can be arranged at each of a position P 1 , a position P 2 , and a position P 3 , which are arranged in this order from the upstream side. In the component mounting device  3 , the substrate S is carried into the position P 1 . Then, the substrate S is moved to the position P 2 . At the position P 2 , the components E are mounted on the substrate S. After that, the substrate S is moved to the position P 3 . Then, the substrate S is carried out from the position P 3  to a downstream device. 
     As shown in  FIG. 1 , the buffer conveyor  4  is configured to receive the substrate S on which the components E have been mounted. Furthermore, the buffer conveyor  4  is configured to receive the substrate S from the upstream component mounting device  3  ( 3   c ) and temporarily hold the substrate S. The buffer conveyor  4  is also configured to send the substrate S to a further downstream device. The operation of the buffer conveyor  4  is controlled by the upstream component mounting device  3   c.    
     In the first embodiment, the controller  39  of each of the component mounting devices  3  is configured or programmed to acquire a plurality of types of operating state changes that are likely to cause a quality defect. Furthermore, the controller  39  is configured or programmed to transmit information according to the types of operating state changes to the server  1 . 
     The operating state changes relate to at least one of a mounting operation abnormality, a mounting operation stop, and a mounting condition change. Specifically, the operating state changes that relate to the mounting operation abnormality include a drop of the component E, a mounting abnormality during mounting, and a deviation of the center of the recognized component E by a threshold or more. The operating state change of the drop of the component E refers to a drop of the component E suctioned from the component feeder  33  by the mounting head  341  in the process of being conveyed to the mounting position. The drop of the component E is detected by imaging of the tip of the nozzle  341   a  by the imaging unit  38  immediately before component mounting. Furthermore, the drop of the component E is detected by a change in a negative pressure from the air pressure generator  345 . 
     The operating state change of the mounting abnormality during mounting refers to a state in which the component E is not mounted at the correct mounting position on the substrate S. The mounting abnormality during mounting is detected by imaging of the mounting position of the component E by the imaging unit  38 . Specifically, the mounting position of the component E is imaged by the imaging unit  38  before and after mounting, and whether or not the component E is correctly mounted is detected based on a difference between the images before and after mounting. 
     The operating state change of the deviation of the center of the recognized component E by the threshold or more refers to a state in which the central position of the component E suctioned by the mounting head  341  is deviated by the threshold or more. The deviation of the center of the recognized component E by the threshold or more is detected based on the imaging result of the component recognition imager  37 . 
     The operating state changes that relate to the mounting operation stop include an emergency stop during component mounting by the user&#39;s operation and opening of the cover  30   b  of the component mounting device  3 . The operating state change of the emergency stop during component mounting by the user&#39;s operation refers to a state in which the user has pressed the emergency stop button  303  to perform an emergency stop. The operating state change of the opening of the cover  30   b  of the component mounting device  3  refers to a state in which the cover  30   b  has been opened by the user and the mounting operation has been stopped. The opening of the cover  30   b  is detected by the cover opening/closing detector  304 . 
     The operating state changes that relate to the mounting condition change include replacement of the nozzle  341   a  of the mounting head  341  that suctions the component E and replacement of the component E to be supplied. The operating state change of the replacement of the nozzle  341   a  of the mounting head  341  that suctions the component E refers to a case in which the nozzle  341   a  of the mounting head  341  is replaced and the component E is mounted on the first substrate S by the replaced nozzle  341   a . The operating state change of the replacement of the component E to be supplied refers to a case in which the tape that holds the components E is replaced and the components E of the replaced tape are mounted on the first substrate S. 
     When acquiring the operating state changes that are likely to cause a quality defect, the controller  39  controls the imaging unit  38  to image the periphery of a relevant area. Moreover, the controller  39  determines an abnormality based on the imaging result. The controller  39  performs a retry depending on the abnormal state. When the abnormality is resolved by the retry, the controller  39  does not transmit information about the operating state changes to the server  1 . 
     In the first embodiment, the server  1  is configured to teach (transmit information) an inspection type for the substrate S based on the information according to the types of operating state changes. That is, the server  1  is configured to store the operating state changes that are likely to cause a quality defect in the upstream component mounting device  3 , and perform a control to stop the mounting operation and provide notification when the mounting operation is completed by the most downstream component mounting device  3 . 
     The server  1  is configured to indicate the inspection type for the substrate S with the notifier  302  of the most downstream component mounting device  3   c  based on the information according to the types of operating state changes. Specifically, based on the information (teaching) from the server  1 , the controller  39  of the component mounting device  3   c  controls the notifier  302  to display the types of operating state changes and an inspection method according to the operating state changes. 
     When the component E drops, a foreign substance inspection on the substrate S is performed. In the case of the mounting abnormality during mounting, the relevant mounting position and component E on the substrate S are inspected. In the case of the deviation of the center of the recognized component E by the threshold or more, the state of the component feeder  33  (the state of the tape feeder  331  and/or the state of the tape) and the state of the nozzle  341   a  are inspected. 
     In the case of the emergency stop during component mounting by the user&#39;s operation, the mounting position of the component E, which has been mounted around the time of the emergency stop, is inspected. That is, when the emergency stop is performed, it is inspected whether or not the component E in the mounting operation has been mounted. When the cover  30   b  of the component mounting device  3  is opened, the mounting position of the component E, which has been mounted around the time of the emergency stop of the opening of the cover  30   b , is inspected. Furthermore, a foreign substance inspection on the substrate S is performed. In other words, it is also inspected whether or not a foreign substance has been mixed by opening the cover  30   b.    
     In the case of the replacement of the nozzle  341   a  of the mounting head  341  that suctions the component E, the mounting result of the component E mounted by the replaced nozzle  341   a  is inspected. In the case of the replacement of the component E to be supplied, the mounting result of the component E supplied from the replaced tape is inspected. 
     The server  1  is also configured to teach a substrate(s) S to be inspected among the plurality of substrates S in the component mounting device  3  based on the information according to the types of operating state changes. Specifically, the server  1  is configured to instruct to inspect the substrate S on which mounting is being performed in the case of the operating state changes of the replacement of the nozzle  341   a  of the mounting head  341  that suctions the component E, the replacement of the component E to be supplied, the mounting abnormality during mounting, the deviation of the center of the recognized component E by the threshold or more, and the emergency stop during component mounting by the user&#39;s operation. That is, the server  1  transmits information (instruction) to inspect the substrate S located at the position P 2  (see  FIG. 6 ) when the operating state changes occur in the component mounting device  3  in which the operating state changes occur. The server  1  is configured to instruct to inspect all the substrates S in the component mounting device  3  in the case of the operating state changes of the drop of the component E and the opening of the cover  30   b  of the component mounting device  3 . That is, the server  1  transmits information (instruction) to inspect the substrates S located at the positions P 1 , P 2 , and P 3  (see  FIG. 6 ) when the operating state changes occur in the component mounting device  3  in which the operating state changes occur. 
     The server  1  is also configured to indicate the inspection type for the substrate S with the notifier  302  based on the information about the operating state changes. Specifically, the server  1  is configured to teach (transmit information) the inspection type for the substrate S to the notifier  302  of the most downstream component mounting device  3  when the operating state changes are acquired in the component mounting device  3 . The server  1  is also configured to instruct to stop the substrate S to be inspected on the buffer conveyor  4 . Specifically, the server  1  transmits information (instruction) for stopping the buffer conveyor  4  to the component mounting device  3   c . Then, the buffer conveyor  4  is stopped by control of the controller  39  of the component mounting device  3   c.    
     (Description of Mounting Operation Control Process) 
     A mounting operation control process of the component mounting system  100  is now described with reference to  FIG. 7 . 
     The mounting operation control process in  FIG. 5  is performed by the controller  39  of each component mounting device  3 . 
     In step S 1  of  FIG. 7 , substrate ID is acquired. The substrate ID is acquired based on imaging by the substrate recognition imager  342 . Alternatively, the substrate ID is acquired by communication from the server  1  or an upstream device. In step S 2 , the mounting operation is started. Specifically, the mounting heads  341  suction the components E from the component feeders  33 , and mount the components E at the mounting positions on the substrate S. 
     In step S 3 , it is determined whether or not the operating state changes have been detected. When the operating state changes have been detected, the process advances to step S 4 . When the operating state changes have not been detected, the process advances to step S 6 . 
     In step S 4 , the information about the operating state changes is transmitted to the server  1 . Specifically, the information about the substrate ID and the types of operating state changes are transmitted to the server  1 . In step S 5 , the component E is discarded as necessary. For example, when the mounting head  341  is suctioning the component E and an emergency stop is performed, the suctioned component E is discarded. 
     In step S 6 , it is determined whether or not mounting of all the components E in the component mounting device  3  that is performing the mounting has been completed. That is, it is determined whether or not all the components E to be mounted have been mounted on the substrate S by the component mounting device  3 . When the mounting has been completed, the process advances to step S 7 . When the mounting has not been completed, the process returns to step S 3 . In step S 7 , it is determined whether or not the device that makes the determination is a specific device. The specific device is a device having the buffer conveyor  4  immediately downstream thereof, a device specified by the user, or the most downstream component mounting device  3  ( 3   c ), for example. That is, the specific device is a device that has been specified to confirm (check) the operating state changes and to perform an operation according to the types of operating state changes. It is determined whether or not the device that makes the determination is the most downstream component mounting device  3 . When it is the most downstream component mounting device  3  ( 3   c ), the process advances to step S 8 . When it is not the most downstream component mounting device  3  ( 3   c ), the process advances to step S 12 . 
     In step S 8 , the information about the operating state changes of the server  1  is confirmed. Specifically, communication with the server  1  is performed such that the information about the operating state changes is confirmed for the substrate S on which mounting has been completed. In step S 9 , it is determined whether or not there is a record of the operating state changes of the substrate S on which mounting has been completed. When there are the operating state changes, the process advances to step S 10 . When there is no operating state change, the process advances to step S 12 . 
     In step S 10 , a warning display of the details of the abnormality is provided. Specifically, based on the information (teaching) from the server  1 , the notifier  302  provides a display based on the types of operating state changes. In step S 11 , a stop instruction is transmitted to the buffer conveyor  4 . Thus, the substrate S having the information about the operating state changes is stopped on the buffer conveyor  4 . In step S 12 , the substrate S is carried out. Then, the mounting operation control process is terminated. 
     Advantageous Effects of First Embodiment 
     According to the first embodiment, the following advantageous effects are achieved. 
     According to the first embodiment, as described above, the controller  39  is configured or programmed to acquire the plurality of types of operating state changes that are likely to cause a quality defect and to transmit the information according to the types of operating state changes to the server  1 . Furthermore, the server  1  is configured to teach the inspection type for the substrate S based on the information according to the types of operating state changes. Accordingly, the substrate can be inspected based on the plurality of types of operating state changes that are likely to cause a quality defect, and thus the inspection can be performed even in cases other than a component drop. Consequently, it is possible to reliably inspect the substrate S, the quality of which is likely to be poor, and thus it is possible to significantly reduce or prevent missing of an abnormality of the substrate S on which the components E have been mounted. In addition, the inspection can be performed according to the operating state changes, and thus a required inspection can be efficiently performed, and the inspection can be accurately performed. Moreover, the substrate S having a risk of quality defect can be removed as necessary, and thus it is possible to significantly reduce or prevent outflow of the substrate S having a risk of quality defect from the component mounting system  100 . 
     According to the first embodiment, as described above, the operating state changes relate to at least one of the mounting operation abnormality, the mounting operation stop, and the mounting condition change. Accordingly, the inspection can be performed based on the plurality of types of operating state changes that relate to at least one of the mounting operation abnormality, the mounting operation stop, and the mounting condition change, and thus it is possible to effectively significantly reduce or prevent missing of the abnormality of the substrate S on which the components E have been mounted. 
     According to the first embodiment, as described above, the operating state changes that relate to the mounting operation abnormality include the drop of the component, the mounting abnormality during mounting, and the deviation of the center of the recognized component E by the threshold or more, the operating state changes that relate to the mounting operation stop include the emergency stop during component mounting by the user&#39;s operation and the opening of the cover  30   b  of the component mounting device  3 , and the operating state changes that relate to the mounting condition change include the replacement of the nozzle  341   a  of the mounting head  341  that suctions the component E and the replacement of the component E to be supplied. Accordingly, the substrate can be inspected for each of the plurality of operating state changes as described above, and thus it is possible to more effectively significantly reduce or prevent missing of the abnormality of the substrate S on which the components E have been mounted. 
     According to the first embodiment, as described above, the server  1  is configured to teach the substrate S to be inspected among the plurality of substrates S in the component mounting device  3  based on the information according to the types of operating state changes. Accordingly, the number of substrates S to be inspected can be changed according to the operating state changes, and thus the inspection time can be shortened as compared with a case in which all the substrates S are constantly inspected. 
     According to the first embodiment, as described above, the server  1  is configured to instruct to inspect the substrate S on which mounting is being performed in the case of the operating state changes of the replacement of the nozzle  341   a  of the mounting head  341  that suctions the component E, the replacement of the component E to be supplied, the mounting abnormality during mounting, the deviation of the center of the recognized component E by the threshold or more, and the emergency stop during component mounting by the user&#39;s operation, and to instruct to inspect all the substrates S in the component mounting device  3  in the case of the operating state changes of the drop of the component and the opening of the cover  30   b  of the component mounting device  3 . Accordingly, it is not necessary to inspect all the substrates S in the case of the operating state changes of the replacement of the nozzle  341   a  of the mounting head  341  that suctions the component E, the replacement of the component E to be supplied, the mounting abnormality during mounting, the deviation of the center of the recognized component E by the threshold or more, and the emergency stop during component mounting by the user&#39;s operation, and thus an increase in the inspection time can be significantly reduced or prevented. Furthermore, there is a possibility that the substrates S other than the relevant substrate S on which mounting is being performed in the component mounting device  3  are also affected in the case of the operating state changes of the drop of the component and the opening of the cover  30   b  of the component mounting device  3 , and thus all the substrates S are inspected such that it is possible to more reliably inspect the substrate S, the quality of which is likely to be poor. 
     According to the first embodiment, as described above, the component mounting device  3  includes the notifier  302  configured to announce the inspection type, and the server  1  is configured to transmit a signal for indicating the inspection type for the substrate S with the notifier  302  based on the information according to the types of operating state changes. Accordingly, the user can inspect the substrate S according to the types of operating state changes based on the announcement from the notifier  302 , and thus even when a substrate inspection device is not provided, it is possible to significantly reduce or prevent missing of the abnormality of the substrate S on which the components E have been mounted. 
     According to the first embodiment, as described above, the server  1  is configured to transmit the signal for indicating the inspection type for the substrate S with the notifier  302  based on the information about the operating state changes and a signal for stopping the substrate S to be inspected on the buffer conveyor  4 . Accordingly, the user can take out the substrate S to be inspected from the buffer conveyor  4  and inspect the substrate S. 
     According to the first embodiment, as described above, the plurality of component mounting devices  3  are provided in series, and the server  1  is configured to transmit a signal for teaching the inspection type for the substrate S to the most downstream component mounting device  3   c  when the operating state changes are acquired in the component mounting device  3 . Accordingly, in the component mounting system  100  in which the plurality of component mounting devices  3  ( 3   a  to  3   c ) are provided in series, even when the substrate S, the quality of which is likely to be poor, occurs, the substrate S is conveyed to the most downstream component mounting device  3   c . Therefore, it is not necessary to interrupt the component mounting operation on another substrate S. Consequently, it is possible to significantly reduce or prevent a decrease in the work efficiency of the component mounting operation on the substrate S. 
     Second Embodiment 
     The structure of a component mounting system  200  according to a second embodiment of the present disclosure is now described with reference to  FIG. 8 . In this second embodiment, an example in which a substrate inspection device is provided downstream of the most downstream component mounting device is described unlike the first embodiment in which the buffer conveyor is provided downstream of the most downstream component mounting device. 
     (Structure of Component Mounting System) 
     The component mounting system  200  according to the second embodiment is configured to mount components E on a substrate S and manufacture the substrate S on which the components E have been mounted. As shown in  FIG. 8 , the component mounting system  200  includes a server  1 , a printer  2 , component mounting devices  3 , and a substrate inspection device  5 . A plurality of component mounting devices  3  ( 3   a ,  3   b , and  3   c ) are provided downstream of the printer  2  along a substrate manufacturing line. 
     The substrate inspection device  5  is provided downstream of the most downstream component mounting device  3   c . Furthermore, the substrate inspection device  5  has a function of inspecting the appearance of the substrate S with visible light or X-rays. The substrate inspection device  5  is configured to receive the substrate S from the upstream component mounting device  3  ( 3   c ) and inspect the substrate S. Furthermore, the substrate inspection device  5  is configured to perform an unusual type of substrate inspection based on information according to the types of operating state changes. That is, the substrate inspection device  5  is configured to inspect the substrate S having the operating state changes according to the types of operating state changes, in addition to the usual inspection. 
     In the second embodiment, a controller  39  of each of the component mounting devices  3  can acquire a plurality of types of operating state changes that are likely to cause a quality defect. Furthermore, the controller  39  is configured or programmed to transmit information to the server  1  such that the type of substrate inspection according to the types of operating state changes is performed. 
     In the second embodiment, the server  1  is configured to teach an inspection type for the substrate S based on the information according to the types of operating state changes. Specifically, the server  1  is configured to teach (transmit information) the inspection type for the substrate S to the substrate inspection device  5  based on the information according to the types of operating state changes. That is, in the second embodiment, the substrate inspection device  5  is configured to inspect the relevant substrate S when the operating state changes occur in the mounting operation. 
     (Description of Mounting Operation Control Process) 
     A mounting operation control process of the component mounting system  100  is now described with reference to  FIG. 9 . 
     The mounting operation control process in  FIG. 9  is performed by the controller  39  of each component mounting device  3 . 
     In step S 1  of  FIG. 9 , substrate ID is acquired. In step S 2 , the mounting operation is started. Specifically, mounting heads  341  suction the components E from component feeders  33 , and mount the components E at mounting positions on the substrate S. 
     In step S 3 , it is determined whether or not the operating state changes have been detected. When the operating state changes have been detected, the process advances to step S 4 . When the operating state changes have not been detected, the process advances to step S 6 . 
     In step S 4 , information about the operating state changes is transmitted to the server  1 . In step S 5 , the component E is discarded as necessary. 
     In step S 6 , it is determined whether or not mounting of all the components E in the component mounting device  3  that is performing the mounting has been completed. When the mounting has been completed, the process advances to step S 12 . When the mounting has not been completed, the process returns to step S 3 . In step S 12 , the substrate S is carried out. Then, the mounting operation control process is terminated. 
     After that, when the carried-out substrate S is carried into the substrate inspection device  5 , a controller of the substrate inspection device  5  performs a substrate inspection process in step S 13 . Specifically, the substrate inspection device  5  confirms the server  1  and confirms whether or not the substrate S to be inspected has the operating state changes. When the substrate S has the operating state changes, the substrate inspection device  5  inspects the substrate S according to the operating state changes. 
     The remaining structures of the second embodiment are similar to those of the first embodiment. 
     According to the second embodiment, the following advantageous effects are achieved. 
     According to the second embodiment, as described above, the controller  39  is configured or programmed to acquire the plurality of types of operating state changes that are likely to cause a quality defect and to transmit the information according to the types of operating state changes to the server  1 . Furthermore, the server  1  is configured to teach the inspection type for the substrate S based on the information according to the types of operating state changes. Accordingly, it possible to significantly reduce or prevent missing of the abnormality of the substrate S on which the components E have been mounted. 
     According to the second embodiment, as described above, the substrate inspection device  5  is provided downstream of the component mounting devices  3 . Furthermore, the server  1  is configured to teach the inspection type for the substrate S to the substrate inspection device  5  based on the information according to the types of operating state changes. Accordingly, the substrate inspection device  5  can inspect the substrate S according to the types of operating state changes, and thus the work burden on a user can be reduced as compared with a case in which the user inspects the substrate S. 
     According to the second embodiment, as described above, the substrate inspection device  5  is configured to perform the unusual type of substrate inspection based on the information according to the types of operating state changes. Accordingly, it is possible to perform the unusual type of substrate inspection on the substrate S, the quality of which is likely to be poor, and thus an abnormality can be easily and accurately detected by the substrate inspection by the substrate inspection device  5 . 
     The remaining advantageous effects of the second embodiment are similar to those of the first embodiment. 
     Modified Examples 
     The embodiments disclosed this time must be considered as illustrative in all points and not restrictive. The scope of the present disclosure is not shown by the above description of the embodiments but by the scope of claims for patent, and all modifications (modified examples) within the meaning and scope equivalent to the scope of claims for patent are further included. 
     For example, while the example in which the notifier provided in the component mounting device is configured to announce the inspection type for the substrate according to the operating state changes based on the teaching (information) from the server has been shown in the aforementioned first embodiment, the present disclosure is not restricted to this. In the present disclosure, a notifier provided in a device further downstream of the component mounting devices may announce the inspection type for the substrate according to the operating state changes based on the teaching (information) from the server. Alternatively, another device may announce the inspection type for the substrate according to the operating state changes based on the teaching (information) from the server. For example, a terminal carried by the user may make an announcement. 
     While the example in which the server is configured to teach (transmit information) the inspection type for the substrate according to the operating state changes to the most downstream component mounting device among the plurality of component mounting devices has been shown in the aforementioned first embodiment, the present disclosure is not restricted to this. In the present disclosure, the server may be configured to teach (transmit information) the inspection type for the substrate according to the operating state changes to a device further downstream of the most downstream component mounting device among the plurality of component mounting devices. 
     While the example in which the user inspects the substrate based on the announcement of the inspection type for the substrate according to the operating state changes has been shown in the aforementioned first embodiment, the present disclosure is not restricted to this. In the present disclosure, the most downstream substrate mounting device may perform a type of substrate inspection according to the operating state changes. 
     While the example in which three substrates can be arranged in the component mounting device has been shown in each of the aforementioned first and second embodiments, the present disclosure is not restricted to this. In the present disclosure, two or less or four or more substrates may be able to be arranged in the component mounting device. 
     While the example in which the component mounting device has one mounting lane has been shown in each of the aforementioned first and second embodiments, the present disclosure is not restricted to this. In the present disclosure, the component mounting device may have a plurality of mounting lanes. 
     While the example in which the component mounting system includes three component mounting devices has been shown in each of the aforementioned first and second embodiments, the present disclosure is not restricted to this. In the present disclosure, the component mounting system may include two or less or four or more component mounting devices. 
     While the mounting operation control process is described, using the flow described in a manner driven by a flow in which processes are performed in order along a process flow for the convenience of illustration in each of the aforementioned first and second embodiments, the present disclosure is not restricted to this. In the present disclosure, the mounting operation control process may be performed in an event-driven manner in which processes are performed on an event basis. In this case, the process may be performed in a complete event-driven manner or in a combination of an event-driven manner and a manner driven by a flow.