JP2012243843A - Component mounting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance productivity when any one feeder is in component shortage or abnormal state during operation of a component mounting machine, and component mounting is continued by switching to a spare feeder.SOLUTION: When any one feeder 23 is in component shortage or abnormal state during operation of a component mounting machine, the stop position of a circuit board 12 being carried in subsequently by means of a conveyor 13 is changed depending on the position of a spare feeder 24 which feeds the same component as that of the feeder 23 in component shortage or abnormal state. More specifically, the stop position of a circuit board 12 is changed so as to minimize the travel time(travel distance)of a mounting head 33 between the attraction position of a component being fed from the spare feeder 24 and the component mounting position on the circuit board 12.

Description

  In the present invention, when one of the feeders is out of component or abnormal during operation of the component mounter, the component is switched to the spare feeder that supplies the same component as the component out of component or abnormal component, and the component mounting is continued. This invention relates to a mounting machine.

  Conventionally, as described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2004-63940), for the purpose of improving the operating rate of a component mounter, among other feeders mounted on the component mounter, other feeders are used. When a spare feeder that supplies the same parts is installed and one of the feeders runs out of parts while the component mounter is running, the part is switched to a spare feeder that supplies the same parts as the feeder that has run out of parts. There is something that continues to be implemented.

  In Patent Document 2 (Japanese Patent Laid-Open No. 2001-15995), when the type of a component mounting board to be produced is switched during operation of the component mounting machine, the stop position of the circuit board carried into the component mounting machine is set. The position is changed to a position close to a feeder that supplies components to be mounted on the circuit board.

JP 2004-63940 A JP 2001-15995 A

  In the above-mentioned Patent Document 1, when one of the feeders runs out of parts while the component mounting machine is in operation, the feeder is switched to a spare feeder that supplies the same parts as the feeder that has run out of parts, and is supplied from the spare feeder. The component to be picked up by the suction nozzle is mounted on the circuit board, but the stop position of the circuit board that is carried into the component mounting machine is the same position as before switching to the spare feeder. In some cases, the distance to the position of the auxiliary feeder becomes long, and as a result, the movement time (movement distance) of the suction nozzle becomes long, and the productivity may decrease.

  In addition, since there is no description regarding the spare feeder in Patent Document 2, if any of the feeders runs out of components while the component mounter is in operation, the component mounter is temporarily stopped and the component cut feeder There is a disadvantage that productivity is reduced because it is necessary to perform replacement or supply of parts.

  Accordingly, the problem to be solved by the present invention is to provide a component mounter that can improve productivity when switching to a spare feeder and continuing component mounting when any feeder is out of component or abnormal. It is.

  In order to solve the above-mentioned problem, the invention according to claim 1 is directed to the circuit by adsorbing a conveyor for carrying a circuit board, a plurality of feeders arranged along the conveyor, and components supplied from the feeder. Component mounting that includes a suction nozzle to be mounted on the board, and when one of the feeders is out of component or abnormal, switches to a spare feeder that supplies the same component as that component out of component or abnormal In the machine, when any one of the feeders is out of component or abnormal, a stop position of a circuit board to be carried in by the conveyor thereafter is set as a spare feeder that supplies the same component as the out of component or abnormal feeder. It is configured to have a control means that changes according to the position. In this configuration, when one of the feeders is out of components or becomes abnormal, the stop position of the circuit board to be carried in after that is changed according to the position of the spare feeder. The moving time (moving distance) of the suction nozzle between the positions can be shortened, and the production time can be shortened.

  In this case, as in claim 2, when one of the feeders is out of components or becomes abnormal, the suction of the components supplied from the spare feeder is changed when the stop position of the circuit board to be carried in thereafter is changed. The stop position of the circuit board is preferably changed so that the moving time of the suction nozzle between the position and the component mounting position on the circuit board is minimized. In this way, the moving time of the suction nozzle between the component suction position and the component mounting position on the circuit board can be minimized, and the production time can be minimized.

  By the way, the component mounting machine has a function to image the part sucked by the suction nozzle with a camera and recognize the image of the picking position and the picking posture of the part. If it is fixed, it is necessary to set the stop position of the circuit board in consideration of the imaging position of the suction component (camera position), the component suction position (feeder position), and the component mounting position on the circuit board. Yes, the effect of changing the stop position of the circuit board according to the position of the spare feeder is reduced.

  Therefore, as described in claim 3, it is preferable that the mounting head that holds the suction nozzle holds the camera that captures an image of the part sucked by the suction nozzle. In this way, the mounting head can move in a straight line between the component suction position and the component mounting position on the circuit board, and the suction position and suction posture of the component sucked by the suction nozzle during the movement can be changed. Images can be recognized with a camera.

  However, this invention is good also as a structure which provided the camera which images the components adsorbed by the adsorption nozzle in the component mounting machine main body side. In this case, as in claim 4, when any feeder is out of components or abnormal, when the stop position of the circuit board to be carried in after that is changed, the position of the camera and the circuit board are changed. The stop position of the circuit board may be changed so that the movement time (movement distance) of the suction nozzle between the upper component mounting position and the upper component mounting position is minimized. Even in this case, the production time can be shortened.

  In addition, when the circuit board is not carried by the conveyor as in claim 5, when it is predicted that the feeder will run out of components in the middle of component mounting on the circuit board, and that the feeder will run out of parts. The stop position of the circuit board loaded by the conveyor may be changed in consideration of the position of the feeder, the position of the spare feeder, and the component mounting position on the circuit board. In this way, if it is predicted that the feeder will run out during the mounting of the component on the circuit board, the suction nozzle between the position of the feeder, the position of the spare feeder, and the position of mounting the component on the circuit board The stop position of the circuit board can be changed so that the movement time (movement distance) is shortened, and it is possible to cope with a case where the feeder parts are cut off during the mounting of the parts on the circuit board.

  In addition, when one of the feeders runs out of components or becomes abnormal during component mounting on the circuit board, it is possible to change the stop position of the circuit substrate during component mounting according to the position of the spare feeder, The time required to change the stop position of the circuit board in the middle of component mounting may be longer than the reduction in the mounting time shortened after the stop position change. Sometimes it is better not to.

  Therefore, as in claim 6, when any of the feeders is out of component or becomes abnormal, the time required for changing the stop position of the circuit board during component mounting and the mounting time reduced after the stop position change If the amount of time required for mounting is greater than the amount shortened, the component mounting on the circuit board is interrupted and the stop position of the circuit board is changed. May be resumed. In this way, only when the feeder's parts are cut or abnormal during mounting of the parts on the circuit board, the production time can be shortened by changing the stop position of the circuit board according to the position of the spare feeder. The stop position of the circuit board during component mounting can be changed.

  Generally, in the component mounting machine, the mounting head that holds the suction nozzle is held by a two-axis robot that can be driven simultaneously in the X direction that is the conveying direction of the conveyor and the Y direction that is orthogonal to the X direction. In this configuration, since the mounting head can be driven in the X direction at the same time as driving between the feeder and the circuit board in the Y direction, the distance in the X direction between the out-of-part or abnormal feeder and the spare feeder is relatively small. If it is short, driving in the X direction ends during driving in the Y direction, and there is no need to change the stop position of the circuit board.

  In consideration of this point, when the mounting head that holds the suction nozzle is held by the biaxial robot as in claim 7, when one of the feeders runs out of parts or becomes abnormal, The mounting head is between the X-direction movement time required for the mounting head to move in the X direction between the out-of-stock or abnormal feeder and the spare feeder, and the component mounting position on the circuit board. If the Y-direction movement time is longer than the Y-direction movement time required to move in the Y direction, the stop position of the circuit board may not be changed. In this way, the stop position of the circuit board can be changed only when the production time can be shortened by changing the stop position of the circuit board.

FIG. 1 is a side view of a component mounter according to an embodiment of the present invention. FIG. 2 is a plan view of the main part of the component mounter. FIG. 3 is a flowchart showing the flow of processing of the circuit board stop position determination processing routine. FIG. 4 is a flowchart showing the flow of processing of the suction start position acquisition routine. FIG. 5 is a flowchart showing the flow of processing of the suction completion position acquisition routine. FIG. 6 is a flowchart showing the flow of processing of the mounting start position acquisition routine. FIG. 7 is a flowchart showing the flow of processing of the mounting completion position acquisition routine.

Hereinafter, an embodiment embodying a mode for carrying out the present invention will be described.
First, the configuration of the component mounter will be described based on FIG. 1 and FIG.
A conveyor 13 for conveying the circuit board 12 is provided on the base table 11 of the component mounting machine (hereinafter, the conveyance direction of the circuit board 12 by the conveyor 13 is referred to as X direction). Of the two support rails 13a and 13b and the support members 15a and 15b that support the conveyor belts 14a and 14b constituting the conveyor 13, one support member 15a is fixed at a fixed position, and the opposite support member By adjusting the position in the Y direction of 15b along the guide rail 16 by a feed screw mechanism or the like, the width of the conveyor 13 (the interval between the conveyor rails 13a and 13b) can be adjusted to the width of the circuit board 12. Yes.

  A component supply device 20 is set on the side of the conveyor 13 on the base table 11 so as to be detachable in the Y direction. This component supply apparatus 20 has a configuration in which a device pallet 22 on which a plurality of feeders 23 are mounted is mounted on a base table 11 via a pallet base 21.

  A mounting head 33 is attached to the X slide 31 that moves in the X direction of the two-axis robot of the component mounter, and a camera 35 that captures the component sucked by the suction nozzle 34 is attached to the mounting head 33. Yes. The X slide 31 of the biaxial robot is supported by a Y slide (not shown) so as to be slidable in the Y direction, and simultaneously drives the mounting head 33 between the feeder 23 and the circuit board 12 in the Y direction. You can also drive. On the lens side of the camera 35 held by the mounting head 33, there is provided a prism 36 for imaging the component sucked by the suction nozzle 34 from below.

  The mounting head 33 is a rotary type head (revolver type head) in which a plurality of suction nozzles 34 are assembled in a circumferential direction on a rotatable nozzle holder 39, and each suction nozzle 34 individually moves up and down to move parts. The suction nozzle 34 is configured to rise by a cam mechanism or the like as the position of the suction nozzle 34 that has been sucked closer to the imaging position of the camera 35 due to the rotation of the nozzle holder 39.

  In the present embodiment, a plurality of feeders 23 are mounted on the device pallet 22 of the component supply apparatus 20, and when any one of the feeders 23 has run out of parts, the same parts as the feeders 23 that have run out of parts. A plurality of spare feeders 24 are installed.

  The control device (control means) of the component mounter supplies a spare feeder 24 that supplies the same component as the feeder 23 that is out of components when any of the feeders 23 is out of operation while the component mounter is in operation. Switch to continue component mounting.

  Conventionally, even after switching to the spare feeder 24, the stop position of the circuit board 12 loaded by the conveyor 13 is the same position as before switching to the spare feeder 24. Therefore, the stop position of the circuit board 12 and the position of the spare feeder 24 are the same. In some cases, the distance between the mounting head 33 and the mounting head 33 may become longer, resulting in a longer moving time (moving distance) of the mounting head 33 and lowering the productivity.

  Therefore, in this embodiment, when one of the feeders 23 is out of components during operation of the component mounting machine, the stop position of the circuit board 12 to be carried by the conveyor 13 after that is set as the out-of-component feeder 23. Are changed according to the position of the spare feeder 24 for supplying the same parts. Specifically, the circuit board 12 is stopped so that the movement time (movement distance) of the mounting head 33 between the suction position of the component supplied from the spare feeder 24 and the component mounting position on the circuit board 12 is minimized. The position is changed.

  Furthermore, in this embodiment, before the circuit board 12 is carried by the conveyor 13, it is predicted that the feeder 23 will run out of components by predicting whether or not the feeder 23 is running out of components on the circuit board 12. In this case, the stop position of the circuit board 12 loaded by the conveyor 13 is changed in consideration of the position of the feeder 23, the position of the spare feeder 24, and the component mounting position on the circuit board 12.

  In this embodiment, when the circuit board 12 is carried by the conveyor 13, the stop position of the circuit board 12 is determined by the following procedure. In this case, since a plurality of suction nozzles 34 are held by the mounting head 33, each time the mounting head 33 is moved to the component supply device 20 side, the components are sequentially suctioned by the plurality of suction nozzles 34. The mounting head 33 is moved above the circuit board 12 to produce a component mounting board by repeating a series of operations of sequentially mounting a plurality of components sucked by the plurality of suction nozzles 34 on the circuit board 12. . Hereinafter, a series of operations from picking up a plurality of components to mounting will be referred to as “PP”.

(1) The suction start position (the suction position of the first suction nozzle 34) of each PP required until the completion of the production of the component mounting board is acquired.
When the first suction nozzle 34 of each PP can suck the parts from the regular feeder 23, the suction position of the regular feeder 23 is acquired, and the regular feeder 23 is out of parts and switched to the spare feeder 24. In this case, the suction position of the spare feeder 24 is acquired. Note that the first PP suction start position is not used to calculate the movement distance of the mounting head 33.

(2) The suction completion position (the suction position of the last suction nozzle 34) of each PP required until the completion of the production of the component mounting board is acquired.
When the last suction nozzle 34 of each PP can suck the parts from the regular feeder 23, the suction position of the regular feeder 23 is acquired, and the regular feeder 23 is out of parts and switched to the spare feeder 24. In this case, the suction position of the spare feeder 24 is acquired.

  (3) Acquire the mounting start position of each PP (first mounting position of the suction nozzle 34) required until the completion of the production of the component mounting board.

  (4) Acquire the installation completion position (installation position of the last suction nozzle 34) of each PP necessary until the production of the component mounting board is completed. The final PP mounting completion position is not used for calculating the moving distance of the mounting head 33.

  (5) Regarding the suction position and the mounting position, the movement distance of the mounting head 33 of each PP viewed from the mounting position is calculated.

(6) The center of gravity (average) of the moving distances of the mounting heads 33 of all PPs is calculated.
The mounting position where the moving distance of the mounting head 33 is the shortest is the center of gravity position of the moving distance of the mounting heads 33 of all PPs.

(7) The stop position of the circuit board 12 is changed to the position of the center of gravity.
The stop position determination process of the circuit board 12 of the present embodiment described above is executed according to the routines of FIGS. 3 to 7 by the control device (control means) of the component mounter. The processing contents of each routine will be described below.

[Circuit board stop position determination process]
The circuit board stop position determination processing routine of FIG. 3 is executed immediately before the circuit board 12 is carried in by the conveyor 13, and plays a role as control means in the claims. When this routine is started, first, at step 101, the suction start position acquisition routine of FIG. 4 is executed, and each PP suction start position (suction of the first suction nozzle 34) required until the production of the component mounting board is completed. Position).

  Thereafter, the process proceeds to step 102, and the suction completion position acquisition routine of FIG. 5 is executed to acquire the suction completion position of each PP (the suction position of the last suction nozzle 34) necessary until the completion of the component mounting board production. .

  Thereafter, the process proceeds to step 103, where the mounting start position acquisition routine shown in FIG. .

  Thereafter, the process proceeds to step 104, where the mounting completion position acquisition routine of FIG. 7 is executed to acquire the mounting completion position (the last mounting position of the suction nozzle 34) of each PP necessary until the completion of the component mounting board production. .

  Thereafter, the process proceeds to step 105, and the moving distance of the mounting head 33 of each PP viewed from the mounting position is calculated with respect to the suction position and mounting position of each PP. Then, in the next step 106, the gravity center position of the movement distance of all the PP mounting heads 33 is calculated, the process proceeds to step 107, the gravity center position is determined as the stop position of the circuit board 12, and this routine is finished. .

[Acquisition start position]
The suction start position acquisition routine of FIG. 4 is a subroutine executed in step 101 of the circuit board stop position determination processing routine of FIG. 3 described above. When this routine is started, first, at step 201, the second PP suction start position (first suction nozzle 34 suction position) is confirmed. Note that the first PP suction start position is not used to calculate the movement distance of the mounting head 33.

  Thereafter, the process proceeds to step 202, where it is determined whether or not a part can be picked up from the regular feeder 23 (whether or not the part is out of stock). The process proceeds to acquire the suction position of the regular feeder 23.

  On the other hand, if it is determined in step 202 that the parts cannot be picked up from the regular feeder 23 (parts are out of stock), the process proceeds to step 204 and the picking position of the spare feeder 24 is acquired.

  Thereafter, the process proceeds to step 205, where it is determined whether or not the final PP adsorption start position has been acquired. If the final PP adsorption start position has not yet been acquired, the process proceeds to step 206 and the next PP adsorption start position. After confirming, return to step 202. Thereby, the process which acquires the adsorption | suction start position of each PP is repeated. Thereafter, when the final PP adsorption start position is acquired, “Yes” is determined in Step 205 and the routine is terminated.

[Acquired suction position]
The suction completion position acquisition routine of FIG. 5 is a subroutine executed in step 102 of the circuit board stop position determination processing routine of FIG. When this routine is started, first, in step 301, the suction completion position of the first PP (the suction position of the last suction nozzle 34) is confirmed.

  Thereafter, the process proceeds to step 302, where it is determined whether or not the part can be sucked from the regular feeder 23 (whether or not the part is out of stock). If it is determined that the part can be sucked from the regular feeder 23, the process goes to step 303. The process proceeds to acquire the suction position of the regular feeder 23.

  On the other hand, if it is determined in step 302 that a part cannot be sucked from the regular feeder 23 (parts are out of stock), the process proceeds to step 304, and the suction position of the spare feeder 24 is acquired.

  Thereafter, the process proceeds to step 305, where it is determined whether or not the final PP adsorption completion position has been acquired. If the final PP adsorption completion position has not yet been acquired, the process proceeds to step 306, where the next PP adsorption completion position is acquired. After confirming, return to step 302. Thereby, the process of acquiring the suction completion position of each PP is repeated. Thereafter, when the final PP adsorption completion position is acquired, “Yes” is determined in Step 305, and this routine is terminated.

[Acquire installation start position]
The mounting start position acquisition routine of FIG. 6 is a subroutine executed in step 103 of the circuit board stop position determination processing routine of FIG. When this routine is started, first, in step 401, the first PP mounting start position (first mounting position of the suction nozzle 34) is confirmed.

  Thereafter, the process proceeds to step 402, where the mounting start position is acquired. In the next step 403, it is determined whether or not the final PP mounting start position has been acquired. If the final PP mounting start position has not yet been acquired. Then, the process proceeds to step 404, and after confirming the mounting start position of the next PP, the process returns to step 402. Thereby, the process of acquiring the mounting start position of each PP is repeated. Thereafter, when the final PP mounting start position is acquired, “Yes” is determined in step 403 and the routine is terminated.

[Acquire installation completion position]
The mounting completion position acquisition routine of FIG. 7 is a subroutine executed in step 104 of the circuit board stop position determination processing routine of FIG. When this routine is started, first, in step 501, the first PP mounting completion position (the last mounting position of the suction nozzle 34) is confirmed.

  Thereafter, the process proceeds to step 502, where the mounting completion position is acquired. In the next step 503, it is determined whether or not the mounting completion position of “final PP-1” has been acquired. If the completion position has not been acquired, the process proceeds to step 504, where the next PP installation completion position is confirmed, and then the process returns to step 502. Thereby, the process of acquiring the mounting completion position of each PP is repeated. The final PP mounting completion position is not used for calculating the moving distance of the mounting head 33. Thereafter, when the “complete PP-1” mounting completion position is acquired, “Yes” is determined in step 503, and this routine is terminated.

  According to the present embodiment described above, when one of the feeders 23 is out of components during operation of the component mounting machine, the stop position of the circuit board 12 to be carried by the conveyor 13 after that is set as the out of components. The movement time (movement distance) of the mounting head 33 between the stop position of the circuit board 12 and the position of the spare feeder 24 is shortened in order to change according to the position of the spare feeder 24 that supplies the same parts as the feeder 23 of the feeder. Production time can be shortened.

  In the present invention, when one of the feeders 23 becomes abnormal (failure) during the operation of the component mounting machine, the stop position of the circuit board 12 that is subsequently carried by the conveyor 13 is set as the feeder that is out of components. 23 may be changed in accordance with the position of the spare feeder 24 for supplying the same components as those in FIG. In this way, when one of the feeders 23 becomes abnormal while the component mounter is in operation, the component feeder is switched to the spare feeder 24 that supplies the same component as the abnormal feeder 23 and the component mounting is continued. However, as in the case of out of parts, the moving time (moving distance) of the mounting head 33 between the stop position of the circuit board 12 and the position of the auxiliary feeder 24 can be shortened, and the production time can be shortened.

  By the way, the component mounting machine has a function of imaging a component sucked by the suction nozzle 34 with the camera 35 and recognizing the image of the suction position, suction posture, etc. of the component. When fixed on the main body side, it is necessary to set the stop position of the circuit board 12 in consideration of the imaging position of the suction part, the part suction position (position of the feeder 23), and the part mounting position on the circuit board 12. Therefore, the effect of changing the stop position of the circuit board 12 according to the position of the auxiliary feeder 24 is reduced.

  Therefore, in this embodiment, the mounting head 33 that holds the suction nozzle 34 is made to hold a camera 35 that captures an image of the part sucked by the suction nozzle 33. In this way, the mounting head 33 can move in a straight line between the component suction position and the component mounting position on the circuit board 12, and the suction position and suction of the component sucked by the suction nozzle 34 during the movement. A posture or the like can be captured and recognized by the camera 35.

  However, the present invention may be configured such that a camera that captures an image of the component sucked by the suction nozzle 34 is provided on the component mounter main body side. In this case, when one of the feeders 23 is out of components or becomes abnormal, when the stop position of the circuit board 12 to be carried in after that is changed, the position of the camera and component mounting on the circuit board 12 are changed. What is necessary is just to change the stop position of the circuit board 12 so that the movement time (movement distance) of the mounting head 33 between positions may be the shortest. Even in this case, the production time can be shortened.

  Further, in this embodiment, before the circuit board 12 is carried by the conveyor 13, the circuit board stop position determination processing routine of FIG. When it is predicted that the feeder 23 will run out of parts by predicting the presence or absence of the feeder 23, it is carried in by the conveyor 13 in consideration of the position of the feeder 23, the position of the spare feeder 24, and the component mounting position on the circuit board 12. Since the stop position of the circuit board 12 can be changed, when it is predicted that the parts of the feeder 23 will be cut off while the parts are mounted on the circuit board 12, the position of the feeder 23, the position of the spare feeder 24, and the circuit board The stop position of the circuit board 12 is changed so that the movement time (movement distance) of the mounting head 33 between the component mounting positions on the head 12 is shortened. Bets can be, can cope with the case where the component depletion of feeder 23 in the middle component mounting on the circuit board 12 is generated.

  By the way, when one of the feeders 23 is cut out during the mounting of the component on the circuit board 12, it is conceivable to change the stop position of the circuit board 12 during the mounting of the component according to the position of the spare feeder 24. However, the time required for changing the stop position of the circuit board 12 during component mounting may be longer than the reduction in the mounting time shortened after the stop position change. It may be better not to change the stop position.

  Therefore, when one of the feeders 23 is out of components, the time required for changing the stop position of the circuit board 12 during component mounting is compared with the shortened mounting time shortened after the stop position change. When the mounting time reduction is larger, the component mounting on the circuit board 12 is interrupted, the stop position of the circuit board 12 is changed, and then the component mounting on the circuit board 12 is resumed. Anyway. In this way, when the parts of the feeder 23 are cut off during the mounting of the components on the circuit board 12, the production time can be shortened by changing the stop position of the circuit board 12 according to the position of the spare feeder 24. Only in this case, the stop position of the circuit board 12 in the middle of component mounting can be changed.

  Further, in the component mounting machine of the present embodiment, the mounting head 33 that holds the suction nozzle 34 is held by a two-axis robot that can be driven simultaneously in the X direction that is the conveyance direction of the conveyor 13 and the Y direction that is the orthogonal direction thereof. ing. In this configuration, since the mounting head 33 can be driven in the X direction at the same time as driving between the feeder 23 and the circuit board 12 in the X direction, the distance in the X direction between the feeder 23 and the spare feeder 24 that are out of components. Is relatively short, driving in the X direction is completed during driving in the Y direction, and there is no need to change the stop position of the circuit board 12.

  In consideration of this point, when the mounting head 33 that holds the suction nozzle 34 is held by the biaxial robot, when any of the feeders 23 is out of parts, the spare parts 23 that are out of parts and spare The mounting head 33 moves in the Y direction between the X-direction movement time required for the mounting head 33 to move in the X direction between the feeder 24 and the spare feeder 24 and the component mounting position on the circuit board 12. If the Y-direction movement time is longer than the Y-direction movement time required for this, the stop position of the circuit board 12 may not be changed. In this way, the stop position of the circuit board 12 can be changed only when the production time can be shortened by changing the stop position of the circuit board 12.

  The present invention is not limited to the above-described embodiments. For example, a configuration in which feeders are arranged on both sides of a component mounting machine, a configuration in which a plurality of conveyors are provided, and a mounting head is also possible. Needless to say, various modifications can be made without departing from the gist, such as attaching only one suction nozzle.

  DESCRIPTION OF SYMBOLS 11 ... Base stand, 12 ... Circuit board, 13 ... Conveyor, 20 ... Component supply device, 23 ... Feeder, 24 ... Preliminary feeder, 31 ... X slide, 33 ... Mounting head, 34 ... Suction nozzle, 35 ... Camera, 36 ... prism

Claims (7)

A conveyor for carrying a circuit board; a plurality of feeders arranged along the conveyor; and a suction nozzle for sucking a component supplied from the feeder and mounting it on the circuit board. In a component mounter that switches to a spare feeder that supplies the same parts as the out of stock or abnormal feeder when it is out of stock or abnormal,
When one of the feeders is out of parts or becomes abnormal, the stop position of the circuit board that is subsequently carried in by the conveyor depends on the position of the spare feeder that supplies the same parts as the out of parts or abnormal feeders. A component mounting machine characterized by comprising control means for changing.   The control means, when one of the feeders is out of components or abnormal, when changing the stop position of the circuit board to be carried in after that, the suction position of the component supplied from the spare feeder and the 2. The component mounting machine according to claim 1, wherein the stop position of the circuit board is changed so that the moving time of the suction nozzle between the component mounting position on the circuit board is minimized.   The component mounting machine according to claim 1, wherein the mounting head that holds the suction nozzle holds a camera that captures an image of the component sucked by the suction nozzle. A camera for imaging the component sucked by the suction nozzle is provided on the component mounting machine body side,
When one of the feeders is out of components or becomes abnormal, the control means changes the stop position of the circuit board to be carried in thereafter, and the position of the camera and the component mounting position on the circuit board. 2. The component mounting machine according to claim 1, wherein the stop position of the circuit board is changed so that the moving time of the suction nozzle in between is shortest.   The control means predicts whether or not the feeder has run out of components in the middle of component mounting on the circuit board before carrying the circuit board by the conveyor, and predicts that the feeder will run out of the feeder. 5. The stop position of the circuit board carried in by the conveyor is changed in consideration of the position of the spare feeder, the position of the spare feeder, and the component mounting position on the circuit board. Component mounting machine.   The control means includes a time required for changing the stop position of the circuit board in the middle of component mounting when one of the feeders is out of component or abnormal, and a reduction in mounting time that is shortened after the stop position change. If the amount of reduction in mounting time is greater, the component mounting on the circuit board is interrupted, the stop position of the circuit board is changed, and the component mounting on the circuit board is resumed. The component mounting machine according to claim 1, wherein the component mounting machine is a component mounting machine. The mounting head that holds the suction nozzle is held by a two-axis robot that can be driven simultaneously in the X direction, which is the conveyance direction of the conveyor, and the Y direction, which is a direction orthogonal thereto.
The control means, when any one of the feeders is out of component or abnormal, is required for the mounting head to move in the X direction between the component out of component or abnormal feeder and the spare feeder. Compared to the movement time and the Y direction movement time required for the mounting head to move in the Y direction between the spare feeder and the component mounting position on the circuit board, the Y direction movement time is longer. In the case, the component mounting machine according to any one of claims 1 to 6, wherein a stop position of the circuit board is not changed.

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