JP7345081B2 - Production control system and production control method - Google Patents

Description

The present invention relates to a production control system and a production control method for controlling a plurality of production equipment that perform work or inspection on a workpiece.

The component mounting line is a production line that connects multiple production equipment such as printing equipment and component mounting equipment.The component mounting line is a production line that connects multiple production equipment such as printing equipment and component mounting equipment.The component mounting line is a production line that connects multiple production equipment such as printing equipment and component mounting equipment. By performing work processes such as mounting, a mounted board with components mounted on the board is produced. An inspection device is installed in the component mounting line, and the quality of the work results is determined for predetermined inspection items for the board after each work process (for example, see Patent Document 1).

In the component mounting line described in Patent Document 1, when an inspection device determines that a board needs to be repaired, the board is extracted from a board transfer device installed downstream of the inspection device, and the necessary repairs are carried out. After the work is completed, an offline correction process is performed in which the board is reinserted into the board transfer device installed upstream of the inspection device. In the offline correction process, when it is determined that a board needs to be corrected, a board transfer device that removes the board and a board transfer device that reloads the board are identified. Then, the locking mechanism of the door member of only the identified substrate transfer device is released, and the substrate can be taken out and reinserted. This prevents erroneously removing a different board or erroneously reinserting a board into a different board transfer device.

JP2009-21466A

By the way, if a board is removed from the component mounting line after being judged as requiring confirmation by the inspection equipment, production may be resumed depending on various changes in the situation, such as the content of subsequent repair work or the amount of time that has passed since the board was removed. It is necessary to change the location where the product is being produced or to stop restarting production. However, in the conventional technology including Patent Document 1, the position at which the board removed from the component mounting line is re-injected into the component mounting line is fixed, so it is difficult to restart production appropriately depending on various situations after removal. There was room for further improvement.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a production control system and a production control method that control the workpieces that have undergone repair work to be reintroduced to the production line so that production can be restarted appropriately.

The production control system of the present invention includes a recognition unit that recognizes an identification code attached to an input workpiece, and controls a plurality of production equipment that performs work or inspection on the workpiece. a production information acquisition unit that acquires an identification code of the workpiece that has been re-injected into the workpiece, an inspection information acquisition unit that acquires inspection information of the workpiece, a repair information acquisition unit that acquires repair information of the workpiece, and the identification code , an input port determination unit that determines whether the input port into which the workpiece has been reinserted is correct or incorrect based on the inspection information and the repair information.

The production control method of the present invention includes a recognition unit that recognizes an identification code attached to an input workpiece, and controls a plurality of production equipment that performs work or inspection on the workpiece, the production control method comprising: Obtaining an identification code of the workpiece that has been reintroduced into production equipment, obtaining inspection information of the workpiece, obtaining repair information of the workpiece, and based on the identification code, the inspection information, and the repair information, This includes determining whether the input port into which the workpiece has been reinserted is correct or incorrect.

According to the present invention, it is possible to perform control so that a workpiece that has undergone repair work can be re-introduced into the production line and production can be restarted appropriately.

Configuration explanatory diagram of a component mounting system according to an embodiment of the present invention A configuration explanatory diagram of an inspection device and a conveyor included in a component mounting system according to an embodiment of the present invention A configuration explanatory diagram of an inspection device and a conveyor included in a component mounting system according to an embodiment of the present invention Configuration explanatory diagram of a repair line provided in a component mounting system according to an embodiment of the present invention A block diagram showing the configuration of a control system of a component mounting system according to an embodiment of the present invention A diagram showing an example of re-input information used in a component mounting system according to an embodiment of the present invention A diagram showing an example of a repair support screen displayed in repair support processing according to an embodiment of the present invention. A diagram showing an example of a re-input support screen displayed in repair support processing according to an embodiment of the present invention. Flowchart of substrate extraction processing according to an embodiment of the present invention Flowchart of substrate re-insertion processing according to an embodiment of the present invention

An embodiment of the present invention will be described in detail below with reference to the drawings. The configuration, shape, etc. described below are examples for explanation, and can be changed as appropriate depending on the specifications of the production system, production line, and production equipment. In the following, a component mounting line and a module assembly line, which produce mounted boards by mounting components on boards, will be described as examples of production lines. Hereinafter, corresponding elements in all drawings will be denoted by the same reference numerals, and redundant explanation will be omitted.

An embodiment of the present invention will be described with reference to the drawings. First, with reference to FIG. 1, the configuration of a component mounting system 1, which is a production system, will be described. The component mounting system 1 has a configuration in which a component mounting line L1, a module assembly line L2, and a repair line L3 are connected through a communication network 2, and are controlled and managed by a production control device 3. The component mounting line L1 includes a plurality of production equipment, and has a function of mounting components on a board (work) to produce a mounted board. The module assembly line L2 is configured to include a plurality of production equipment, and has a function of mounting irregularly shaped parts on a mounting board to produce modules.

In the repair line L3, repair work is performed on boards and mounting boards that were determined to be defective during inspection and removed in the component mounting line L1 or the module assembly line L2. Information specifying the work position of the board, information on the work performed on the board, etc. are transmitted from each production facility to the production control device 3, which is a computer. The production control device 3 also stores information on production programs currently applied to the component mounting line L1 and module assembly line L2. Note that the repair work described in this embodiment mode includes direct work such as adjustment and removal of at least one of the mounting board, solder deposited on the mounting board, and components mounted on the solder, as well as re-inspection, This also includes work that does not involve working directly on the mounting board, such as visual confirmation.

In FIG. 1, the component mounting line L1 includes a loader M1, a first conveyor M2, a printing device M3, a printing inspection device M4, a first 2 conveyor M5, component mounting devices M6 to M8, third conveyor M9, mounting inspection device M10, fourth conveyor M11, reflow device M12, fifth conveyor M13, post-reflow inspection device M14, sixth conveyor M15, unloader M16, etc. Production equipment is connected in series.

The module assembly line L2 includes, from the upstream side to the downstream side in the board transport direction, a loader M17, a seventh conveyor M18, an odd-shaped component mounting device M19, an eighth conveyor M20, a mounting inspection device M21, a ninth conveyor M22, and a local Production equipment such as a soldering device M23, a tenth conveyor M24, a visual inspection device M25, a visual support device M26, a board dividing device M27, and an unloader M28 are connected in series. A repair support device M29 is installed in the repair line L3. Note that the module assembly line L2 may have a configuration in which at least a portion of each piece of equipment is independent and the substrates are transported by humans or AGVs without a conveyor.

In FIG. 1, loaders M1 and M17 supply a substrate B or a mounted substrate in which a component D (see FIGS. 3 and 4) is mounted on the substrate B to downstream production equipment. Hereinafter, unless otherwise specified, the board B will be simply referred to as the board B, including the mounting board and the state in the middle of production where solder is printed. The printing device M3 performs a solder printing operation of screen printing solder for joining components onto the board B. The print inspection device M4 performs a print inspection operation to inspect the state of solder printed on the board B. The component mounting apparatuses M6 to M8 execute a component mounting operation of mounting the component D on the board B on which solder is printed.

The mounting inspection apparatus M10 performs a mounting inspection work to inspect the state of the component D mounted on the board B. The reflow apparatus M12 heats the board B to melt and harden the solder, and performs a reflow operation in which the electrodes of the board B and the terminals of the component D are joined by soldering. The post-reflow inspection device M14 performs a post-reflow inspection work that inspects the states of the components D and the substrate B on the board B after reflow. The unloaders M16 and M28 collect the substrate B transported from the upstream side.

In FIG. 1, the odd-shaped component mounting device M19 performs an odd-shaped component mounting operation for mounting (inserting) odd-shaped components such as sockets and connectors onto the board B. The mounting inspection device M21 performs a mounting inspection operation for inspecting the state of the irregularly shaped parts mounted on the board B. The local soldering device M23 performs a local soldering operation in which only the terminals of the irregularly shaped parts mounted on the board B are dipped in molten solder and soldered. The visual inspection device M25 performs visual inspection work to inspect the state of the irregularly shaped parts on the board B after local soldering.

The visual support device M26 transports the board B on which the irregularly shaped parts are mounted so that the worker can easily take out the board B and visually check it, and displays the inspection results of the visual inspection device M25, so that the worker can check the result of the visual check. Perform visual assistance to enter. When the board B is a multi-panel board made up of a plurality of individual boards Ba (see FIG. 4), the board splitting device M27 performs a board splitting operation of cutting the board B into the individual boards Ba.

In FIG. 1, the first conveyor M2, the second conveyor M5, the third conveyor M9, the fourth conveyor M11, the fifth conveyor M13, the sixth conveyor M15, the seventh conveyor M18, the eighth conveyor M20, the ninth conveyor M22, and the 10 conveyor M24 (hereinafter simply referred to as "board insertion/extraction conveyor") executes a board transport process of transporting the board B carried out from the upstream production equipment to the downstream production equipment. In addition, the board insertion/extraction conveyor performs a board removal process to remove the board B being produced from the middle of the component mounting line L1 or module assembly line L2, and reinjects the removed board B into the component mounting line L1 or module assembly line L2. Execute the board reloading process.

Moreover, the first conveyor M2 is equipped with an inversion mechanism that inverts the substrate B received from the upstream production equipment upside down. When the back side of the board B carried out from the upstream production equipment is the work target surface on which the component D is mounted, the first conveyor M2 operates a reversing mechanism to turn the board B upside down. That is, the first conveyor M2 is also a reversing device that reverses the substrate B (work) using a reversing mechanism.

In FIG. 1, a component mounting system 1 includes a reader 4 (mobile terminal) equipped with a reader 4a that recognizes an identification code C (see FIGS. 3 and 4) such as a barcode or two-dimensional code attached to a board B. is used. The recognized identification code C is wirelessly transmitted to the production equipment or production control device 3. The reader 4 also wirelessly receives various information transmitted from the production equipment or the production control device 3 and displays it on the display screen 4b. In addition to being carried by workers, a plurality of readers 4 are installed near production equipment (see FIGS. 2 and 4).

Note that although FIG. 1 shows a component mounting system 1 in which one production control device 3 is provided with one component mounting line L1, one module assembly line L2, and one repair line L3, the component mounting system 1 has this configuration. It is not limited to. For example, the component mounting system 1 may have a configuration in which one production control device 3 includes two or more component mounting lines L1, module assembly lines L2, and repair lines L3. Furthermore, the component mounting system 1 may have a structure in which each of two or more component mounting lines L1 includes one common module assembly line L2 and one repair line L3, or may have a structure in which the module assembly line L2 is not provided. Alternatively, it may be configured to include one or more module assembly lines L2 and not include the component mounting line L1.

In addition, when the component mounting system 1 includes two or more component mounting lines L1 or module assembly lines L2, a line control computer that collects information on the production line and performs production management is arranged for each production line, and the production management The device 3 may be configured to control the production line via a line control computer. In addition, FIG. 1 shows a structure in which a board B on which components are mounted is taken out from an unloader M16 in a component mounting line L1 and transferred to a loader M17 in a module assembly line L2 by an operator or a transfer robot. The configuration may be such that the line L2 is connected to directly move (transport) the board B on which the component D is mounted.

Next, with reference to FIGS. 2 and 3, the configurations of inspection devices such as the print inspection device M4, the mounting inspection device M10, the post-reflow inspection device M14, the mounting inspection device M21, and the appearance inspection device M25 will be described. The print inspection device M4, the mounting inspection device M10, the post-reflow inspection device M14, the mounting inspection device M21, and the appearance inspection device M25 inspect a board B after solder printing, a board B after component mounting, a board B after reflow, The configuration is the same except that the board B is after the irregularly shaped parts are mounted and the board B is after the local soldering. The mounting inspection apparatus M10 will be described below as an example.

2 and 3, in the mounting inspection apparatus M10, a display section 5 that displays various information such as inspection results by the mounting inspection apparatus M10 is arranged in front of the operator's work. The mounting inspection device M10 includes an openable cover 6 on the front surface, and an openable cover lock section 7 and an openable cover detection section 8 inside. When the opening/closing cover lock part 7 is in the locked state with the opening/closing cover 6 closed, the opening/closing cover 6 is locked so as not to open. Moreover, when the opening/closing cover lock part 7 is in the unlocked state, the operator can freely open/close the opening/closing cover 6. The opening/closing cover detection unit 8 is a sensor such as a microswitch, and detects whether the opening/closing cover 6 is in a closed state (closed state) or in an open state (open state).

A pair of transport conveyors 9 are arranged inside the mounting inspection apparatus M10. The conveyor 9 receives the substrate B carried out from the third conveyor M9 on the upstream side, conveys it to the inspection work position P1, and carries out the inspected substrate B to the fourth conveyor M11 on the downstream side. A substrate detection unit 10 such as an optical sensor is arranged on the conveyor 9 to detect the substrate B conveyed to the inspection work position P1. When the conveyor 9 stops the substrate B at the inspection work position P1, when the substrate detection section 10 detects the substrate B being conveyed, the conveyance of the substrate B is stopped.

The operator can open the open/close cover 6 and take out the board B stopped at the inspection work position P1 from the conveyor 9. Moreover, the board B that has been repaired can be reinserted into the inspection work position P1. That is, the inspection work position P1 in the mounting inspection apparatus M10 is a sampling work position where the board B can be taken out and reinserted, and the opening/closing cover 6 is an input port into which the board B is put in again.

In FIG. 3, an inspection head 11 is installed inside the mounting inspection apparatus M10. The inspection head 11 includes a camera for inspecting the state of the component D mounted on the substrate B, a 3D sensor, and lighting for imaging. The mounting inspection apparatus M10 determines the presence or absence of the component D and the mounting state of the component D based on the inspection result by the inspection head 11. The inspection head 11 also recognizes the identification code C attached to the substrate B. That is, the inspection head 11 is a recognition unit that recognizes the identification code C attached to the substrate B (workpiece). The inspection results, such as the necessity of repair, and the recognized identification code C are transmitted to the production control device 3.

Next, the configuration of the board insertion/extraction conveyor will be described with reference to FIGS. 2 and 3. The board insertion/extraction conveyor has a similar configuration. The fourth conveyor M11 will be explained below as an example. In the fourth conveyor M11, a display section 12 that displays various information such as instructions for substrate extraction processing and substrate re-insertion processing in the fourth conveyor M11 is arranged in front of the operator's work.

In FIG. 3, the fourth conveyor M11 includes an opening/closing cover 13 on its upper surface, an opening/closing cover locking section 14, and an opening/closing cover detecting section 15 inside. The functions of the open/close cover 13, the open/close cover lock section 14, and the open/close cover detection section 15 are the same as those of the open/close cover 6, the open/close cover lock section 7, and the open/close cover detection section 8 included in the mounting inspection device M10, and detailed explanations will be omitted. do.

A pair of transport conveyors 16 are arranged inside the fourth conveyor M11. The conveyor 16 receives the substrate B carried out from the upstream mounting inspection apparatus M10, transports it to the sampling operation position P2, and carries out the substrate B at the sampling operation position P2 to the downstream reflow apparatus M12. A substrate detection unit 17 such as an optical sensor is arranged on the conveyor 16 to detect the substrate B conveyed to the sampling work position P2.

When the conveyor 16 stops the substrate B at the extraction work position P2, when the substrate detection section 17 detects the substrate B being conveyed, the conveyance of the substrate B is stopped. When the board sampling process and board reinsertion process are not performed, the conveyor 16 carries out the board B received from the mounting inspection apparatus M10 to the reflow apparatus M12 without stopping at the sampling work position P2. The operator can open the open/close cover 13, extract the board B stopped at the extraction work position P2 from the conveyor 16, and reinsert it. That is, the opening/closing cover 13 is an input port into which the substrate B is input again.

Inside the fourth conveyor M11, there is an upper reading section R1 that recognizes the identification code C attached to the front surface of the substrate B, and an identification code attached to the back surface of the substrate B (or the reversed surface of the substrate B). A lower reading section R2 for recognizing C is arranged. That is, the upper reading section R1 and the lower reading section R2 are recognition sections that recognize the identification code C attached to the substrate B (work). The identification code C recognized by the upper reading section R1 or the lower reading section R2 is transmitted to the production control device 3 via the communication network 2.

In FIG. 1, the printing device M3, the component mounting devices M6 to M8, and the odd-shaped component mounting device M19 recognize the identification code C attached to the transport conveyor having a working position, the opening/closing cover and the opening/closing cover lock, and the board B. It is equipped with a camera that allows the board B to be removed and reinserted. That is, the production equipment has a recognition unit that recognizes the identification code C attached to the substrate B (workpiece). The board insertion/extraction conveyor, inspection device, printing device M3, component mounting devices M6 to M8, and odd-shaped component mounting device M19 that constitute the component mounting line L1 and module assembly line L2 are connected to the production line (component mounting line L1, module assembly line It is an extraction place where the substrate B (work) can be extracted from L2), and it is also a re-insertion area having an input port (an opening/closing cover of the production equipment) through which the substrate B can be reinserted.

Next, with reference to FIGS. 2 and 3, the sampling process in the production facility, which is the sampling location, will be described using the fourth conveyor M11 as an example. When the operator operates the "stop operation" button (not shown) displayed on the display unit 12 while the substrate B to be sampled is at the sample operation position P2, the fourth conveyor M11 moves to the upstream production equipment ( A command to prohibit the removal of the board B is sent to the mounting inspection device M10), and the opening/closing cover lock section 14 is unlocked (the safety device is released). Next, the fourth conveyor M11 displays on the display unit 12 that the operation has been stopped.

When the operator opens the open/close cover 13, extracts the board B located at the extraction work position P2, and closes the open/close cover 13, the open/close cover detection section 15 detects the closed state of the open/close cover 13. In this state, when the operator operates the "start operation" button (not shown) displayed on the display unit 12, the fourth conveyor M11 locks the opening/closing cover locking unit 14 (activating the safety device). A command to start carrying out substrate B is sent to the upstream production equipment to restart operation.

Next, with reference to FIGS. 2 and 3, the re-input process in the production facility, which is the re-input location, will be described using the fourth conveyor M11 as an example. When the operator operates a "stop" button (not shown) displayed on the display unit 12, the fourth conveyor M11 transmits a command to prohibit the removal of the substrate B to the upstream production equipment. When the substrate B in the extraction work position P2 is carried out to the downstream side and the extraction work position P2 becomes empty, the fourth conveyor M11 unlocks the opening/closing cover lock part 14. Next, the fourth conveyor M11 displays on the display unit 12 that the reinsertion process has been completed.

When the operator opens the opening/closing cover 13 (input port), placing the board B to be reinserted into the extraction work position P2, and closing the opening/closing cover 13, the opening/closing cover detection section 15 detects the closed state of the opening/closing cover 13. , the board detection unit 17 detects the reinserted board B. In this state, when the operator operates the "start operation" button displayed on the display section 12, the fourth conveyor M11 locks the opening/closing cover lock section 14 and starts transporting the substrates B to the upstream production facility. Send a command to resume operation.

Next, with reference to FIG. 4, the repair line L3 will be explained. A repair support device M29 connected to the communication network 2 and a reader 4 are placed on a workbench 18 provided in the repair line L3. The repair support device M29 includes a main body 19 that is a computer, a display 20 that is a display device, and a keyboard 21 that is an input device. Note that a pointing device such as a mouse may be provided as the input device.

On the workbench 18, a board B that has been determined to be defective by the mounting inspection device M10 and taken out from the component mounting line L1 is placed for repair work. The board B placed on the workbench 18 is a multi-panel board in which individual boards Ba are formed in three rows (A to C) and three columns (1 to 3) horizontally. The position of component D mounted on Ba (A3) is deviated from the predetermined position. In addition to the repair work performed by the operator, the repair support device M29 includes a working part that can perform general-purpose movements such as an articulated robot or a parallel link robot, a recognition part that recognizes the state of the board B, and a recognition part that recognizes the state of the board B. The configuration may include a control unit that specifies a repair location based on the state and inspection results and controls the work unit, and at least a part of a storage unit that stores the contents of the work performed by the work unit.

Next, with reference to FIG. 5, the configuration of the control system of the component mounting system 1 will be described. Here, configurations related to the board extraction process and board re-insertion process of the component mounting line L1 and the repair support process of the repair line L3 will be described.

The production control device 3 includes an information processing device 30, a storage device 31, and a display section 32. The storage device 31 stores substrate location information 33, sampled substrate information 34, inspection information 35, repair information 36, production program information 37, re-insertion slot information 38, and the like. The information processing device 30 includes a production information acquisition unit 39, an inspection information acquisition unit 40, a repair information acquisition unit 41, a time management unit 42, an input slot determination unit 43, a conveyance determination unit 44, and a display processing unit 45 as internal processing units. ing. Note that the production management device 3 does not need to be composed of one computer, and may be composed of a plurality of devices. For example, all or part of the storage device and internal processing unit may be provided in the cloud via a server.

In FIG. 5, the display unit 32 is a display device such as a liquid crystal panel, and displays various data, notification information, etc. stored in the storage device 31. The production information acquisition unit 39 acquires from the production equipment information regarding the identification code C recognized by the recognition unit included in the production equipment, such as the upper reading unit R1 and the lower reading unit R2 of the fourth conveyor M11. The production equipment recognizes the identification code C and transmits it to the production control device 3 not only at the timing when the board B is received from the upstream side but also at the timing when the board B is reinserted into the production equipment. In this way, the production information acquisition unit 39 acquires the identification code C of the substrate B (workpiece) that is reinserted into the production equipment.

The acquired identification code C is stored in the storage device 31 as the board location information 33 in association with the location (production equipment) of the board B. In addition, the identification code C of the board B extracted from the component mounting line L1 or the module assembly line L2 is information about the production equipment from which it was extracted (sampling location), the time at which it was extracted, and the production program that was applied at the time of extraction. etc., and is stored in the storage device 31 as extracted board information 34.

Then, the timing at which the board B is carried out to the downstream side in the component mounting line L1 or the module assembly line L2 (or the timing at which the downstream production equipment receives the board B), the timing at which the board B is extracted, and the timing at which the board B is The substrate location information 33 is updated at the timing of reinsertion. Note that, when the board B is transported to production equipment that does not have a recognition unit or production equipment that has a recognition unit but does not recognize the identification code C, the production information acquisition unit 39 detects the board acquired from the production equipment. Based on the information that the board B has been received, the location of the board B in the board location information 33 is updated. That is, the substrate location information 33 is updated so that the information on the latest identification code C recognized by the upstream production equipment is passed on to the downstream production equipment.

In FIG. 5, the production program information 37 stores information on production programs currently applied to the component mounting line L1 and module assembly line L2. By comparing the production program of the sampled board B included in the sampled board information 34 and the current production program included in the production program information 37, the production program of the sampled board B and the sampled board B on the component mounting line L1 and the module assembly line L2 are compared. It is possible to determine whether the same work group is being produced (the production program is the same) or not (the production program is different).

The inspection information acquisition unit 40 acquires the inspection results of the board B from an inspection device such as the mounting inspection device M10, and stores them in the storage device 31 as inspection information 35. That is, the inspection information acquisition unit 40 acquires the inspection information 35 of the substrate B (work). The repair information acquisition unit 41 acquires the result of the repair work on the board B, which will be described later, from the repair support device M29 and stores it in the storage unit as repair information 36. That is, the repair information acquisition unit 41 acquires the repair information 36 of the board B (work).

The time management unit 42 stores components such as moisture-absorbing components that have set time limits from the time solder is printed on the board B until the end of the reflow work, and the time limit from the time they are taken out of storage until the end of the reflow work. For board B, which has a time limit until a predetermined work is completed, the production completion deadline is calculated after the work is completed, and the production completion deadline is entered in the board location information 33 or sampled board information 34 in association with the identification code C of the board B. to remember. That is, the time management unit 42 manages the production completion deadline for the board B (workpiece).

In FIG. 5, after the substrate B on which the repair work has been completed is re-injected into the production equipment and the identification code C is recognized by the recognition unit, the input port determination unit 43 checks the identification code C, inspection information 35, repair information 36, Based on the re-insertion port information 38, it is determined whether the input port (opening/closing cover of the production equipment) into which the substrate B (workpiece) is reinserted is correct or incorrect. In the re-input port information 38, the input port (production equipment) corresponding to the combination of the identification code C, inspection information 35, and repair information 36 is designated. Moreover, when the input port determining unit 43 determines that the input port into which the paper was re-loaded is incorrect, it determines the correct input port.

An example of the reload slot information 38 will now be described with reference to FIG. 6. The re-insertion port information 38 in FIG. 6 shows that the identification code C of the board B is recognized only by the board insertion/unloading conveyor and the upper reading part provided in the visual support device M26, and the production equipment to which the board B is re-injected is the board insertion/unloading conveyor and the upper reading unit provided in the visual support device M26. It is created under the condition that only the visual support device M26 is used. In the reloading port information 38, the latest reading position 51, defective surface 52, defective detection position 53, repair result 54, and reloading port 55 are stored for each number 50. The latest reading position 51 is information that specifies the production equipment that last recognized the identification code C of the board B. The defective surface 52 is information that specifies whether the surface of the substrate B determined to be defective by the inspection device is the "front surface" or the "back surface."

The defect detection position 53 is information that specifies the detection device that detected the inspection defect of the board B. That is, the "print inspection" is performed by the print inspection device M4, the "mounting inspection" is performed by the mounting inspection device M10, the "installation inspection" is performed by the mounting inspection device M21, and the "appearance inspection" is performed by the appearance inspection device M25. It shows that The repair result 54 is information that specifies the content of the repair work performed on the defective board B. In other words, "solder cleaning" is for removing solder printed on board B, "component removal" is for removing parts or oddly shaped parts mounted on board B, and "position adjustment" is for removing solder printed on board B. This indicates that the correction of the positional deviation of the mounted part or the irregularly shaped part was performed as a repair work.

In addition, a "good product" means that it has been determined to be a good product as a result of visual confirmation, or that the defect is an individual board Ba that is part of a multi-sided board and that production is resumed after skipping the work on the defective individual board Ba. It shows that you have decided. The re-input port 55 is the most downstream production facility among the production facilities (input ports) into which the board B determined by the combination of the latest reading position 51, defective surface 52, defect detection position 53, and repair result 54 is re-injected. It shows.

The input port determining unit 43 identifies a defect detection position 53 and a repair result 54 from the inspection information 35 and repair information 36 of the board B with the acquired identification code C, and the production equipment into which the board B is re-injected is located at the defect detection position. The input port is determined to be correct if it is the same as the re-input port 55 (production facility) corresponding to the combination of 53 and the repair result 54, or is located upstream of the re-input port 55. Note that the re-insertion port information 38 is not limited to this example, and is created as appropriate in accordance with the configurations of the component mounting line L1 and module assembly line L2, the content of repair work, and the like.

In FIG. 6, if the defective surface 52 whose number 50 is "1" is "front", the defect detection position 53 is "print inspection", and the repair result 54 is "solder cleaning", screen print solder on board B after reinserting. In order to do this, the first conveyor M2 located upstream of the printing device M3 is designated as the re-insertion port 55. If the number 50 is "2", the defective surface 52 is "front", the defect detection position 53 is "print inspection", and the repair result 54 is "good", in order to send the board B as it is to the next process after re-inserting, The second conveyor M5 on the downstream side of the print inspection device M4 is designated as the re-input port 55.

If the number 50 is "5", the defective surface 52 is "front", the defect detection position 53 is "mounting inspection", and the repair result 54 is "component removal", then the component D removed from the board B is remounted after reinsertion. Therefore, the second conveyor M5 on the upstream side of the component mounting devices M6 to M8 is designated as the re-input port 55.

In FIG. 6, if the defective surface 52 with the number 50 being "6" is "front", the defect detection position 53 is "mounting inspection", and the repair result 54 is "component adjustment", the mounting is performed in the mounting inspection device M10 after re-insertion. In order to restart production from inspection work, the third conveyor M9 is designated as the re-input port 55. That is, when the repair work for the reinserted board B (workpiece) is to adjust the position of the component D mounted on the board B, the input port determination unit 43 uses production equipment (mounting inspection equipment) to inspect the position of the component D. M10) or the input port upstream from the production equipment (third conveyor M9) is determined to be correct.

If the number 50 is "9", the defective surface 52 is "back side", the defect detection position 53 is "mounting inspection", and the repair result 54 is "component adjustment", the identification code C attached to the surface of the board B after re-insertion. The first conveyor M2, which is a reversing device, is designated as the re-input port 55 in order to recognize this, turn it upside down, and then resume production from the mounting inspection work in the mounting inspection device M10. In other words, when working on the substrate B (work) that has the identification code C attached to the surface (front surface) opposite to the surface to be worked on (back surface), the input port determination unit 43 selects the reversing device (first conveyor M2) or The input port on the upstream side of the reversing device is determined to be correct.

In this way, if the work surface is the back side and the production equipment that re-feeds the substrate B is the reversing device (first conveyor M2) or upstream thereof, such as when the number 50 is "9", the first conveyor M2 The inverted board B is not processed in the production equipment (printing equipment M3, printing inspection equipment M4, component mounting equipment M6 to M8) upstream of the production equipment (mounting inspection equipment M10) that restarts production, and is sent downstream as it is. transported to the side.

In FIG. 5, the transport determination unit 44 determines whether or not the reinserted workpiece can be transported based on the production completion deadline of the reinserted board B (workpiece) included in the sampled board information 34. Specifically, the transport determining unit 44 calculates the time required for the reinserted board B to reach the process for which the production completion deadline is set. Then, the transport determining unit 44 determines that transport is possible when the work is expected to be completed before the production completion deadline, and determines that transport is not possible when the work is not expected to be completed within the production completion deadline. As a result, it is possible to prevent wasteful work performed on the board B that does not meet the production completion deadline, and to prevent quality defects from occurring due to work that exceeds the production completion deadline.

Further, the transport determining unit 44 determines whether or not the reinserted substrate B (workpiece) can be transported based on the work group being produced by the production equipment. Specifically, the conveyance judgment unit 44 compares the production program to which the reinserted board B included in the sampled board information 34 was applied and the current production program included in the production program information 37, and It is determined whether the same work group as the printed board B is being produced. Then, the transport determining unit 44 determines that transport is possible in the case of the same work group, and determines that transport is not possible in the case of different work groups.

As a result, the same work group is being produced in parallel on multiple production lines (component mounting line L1, module assembly line L2), and while repair work is being performed on the extracted board B, some production lines When the work group for production is changed (setup change), it is possible to prevent the problem of restarting production by erroneously re-entering the changed production line. On the other hand, even if the sample is reintroduced to a production line different from the one from which it was extracted, production can be resumed if it is in an appropriate work group, and the component mounting system 1 can flexibly manage production.

In FIG. 5, the display processing unit 45 causes the display unit 32 to display the correct input port when the substrate B (workpiece) is re-loaded into the wrong input port (production equipment). That is, when the input slot determination unit 43 determines that the input slot that was reloaded is incorrect and determines the correct input slot, the display processing unit 45 causes the display unit 32 to display the correct input slot. Further, if the reinserted substrate B (workpiece) cannot be transported, the display processing section 45 causes the display section 32 to display a message to that effect. That is, when the transport determining unit 44 determines that the reinserted board B cannot be transported, the display processing unit 45 displays on the display unit 32 the reason why production of the reinserted board B cannot be resumed and that it will be removed from the production equipment. do. Note that the display processing section 45 may be displayed on the display section 32 of the production management device 3 as well as the display section of the production equipment or the display screen 4b (display section) of the reader 4.

Next, with reference to FIGS. 4 to 5 and FIGS. 7 to 8, the configuration of the repair line L3 and the repair work on the board B (hereinafter referred to as the "repair target board") determined to be defective during inspection in the repair line L3 will be explained. explain. In FIG. 5, the repair line L3 includes a repair support device M29 and a reader 4. The repair support device M29 includes a display 20, a keyboard 21, an examination information collation section 22, a re-insertion port determination section 23, a support display processing section 24, and a wireless communication section 25. The wireless communication unit 25 is a wireless communication device, and transmits and receives data to and from the reader 4 wirelessly. Note that the reader 4 may be connected to the repair support device M29 by wire. Further, the reader 4 may send and receive data to and from the repair support device M29 via the wireless communication device included in the production control device 3 and the communication network 2.

4 and 5, in the repair work, the operator uses the reader 4 to recognize the identification code C attached to the repair target board placed on the workbench 18. When the identification code C of the board to be repaired is acquired, the inspection information collation unit 22 collates the identification code C with the production control device 3 and acquires the inspection information 35 of the board B concerned. When the inspection information 35 of the repair target board is acquired, the support display processing unit 24 causes the display 20 to display a repair support screen that supports the repair work by the operator based on the acquired inspection information 35.

Here, with reference to FIG. 7, the repair support screen 60 displayed on the display 20 will be described. The repair support screen 60 displays a “board name” display frame 61, an “inspection process” display frame 62, a “defect content” display frame 63, a “repair content” input frame 64, and a “decision” button 65. In the “board name” display frame 61, the board name (B8064) of the repair target board specified by the identification code C is displayed. The “inspection process” display frame 62 displays the inspection process (inspection device) in which the repair target board included in the inspection information 35 was determined to be defective.

The “defect contents” display frame 63 displays the contents of the inspection failure of the repair target board included in the inspection information 35. In this example, the defect content is a misalignment of a component D whose component name is "D053" mounted on an individual board Ba whose upper right position is "A3" of the repair target board. After performing the repair work, the operator inputs the contents of the repair work (repair contents) into the "repair contents" input frame 64 using an input device such as the keyboard 21. Specifically, by selecting the radio button 64a displayed in the "repair content" input frame 64, the repair content is input.

In this example, "solder cleaning," "component removal," "component position adjustment," "defective skip," and "defective product" are displayed as repair options. "Solder cleaning" is the removal of solder printed on the repair target board, "component removal" is the removal of components mounted (mounted) on the repair target board, or irregularly shaped parts, and "component position adjustment" is the removal of solder printed on the repair target board ( This is correction of misalignment of mounted parts or irregularly shaped parts. In addition, "defective skip" is when the repair target board is a multi-sided board and it is decided to skip the work on the defective individual board Ba from now on, and "good product" is when the repair target board is determined to be a good product after visual confirmation. , is selected. Note that the repair contents are not limited to these, and may be added or deleted as appropriate.

In FIG. 7, "component position adjustment" is selected as the repair content. When the operator operates the "OK" button 65, the selected repair details are input to the repair support device M29, and are also transmitted to the production control device 3 and stored in the storage device 31 as repair information 36. When the repair details are input, the re-insertion slot determining unit 23 re-inserts the repair target board based on the identification code C of the repair target board, the inspection information 35, the input repair details, and the re-insertion slot information 38. Determine candidates for re-input ports (production equipment). Based on the determined reloading port, the support display processing unit 24 causes the display 20 to display information that supports reloading of the repair target board including the reloading port as a reloading support screen 70.

In addition, the input repair details are linked to the board B and history management is performed. For example, if you perform repair processing on board B that was determined to be defective by an inspection machine, and then re-input it and it is determined to be defective again, if you link the repair details, you can identify the cause of the defect in the past. It is possible to easily determine whether or not the defect is caused by a defect, and it is possible to easily analyze the cause of the defect.

Here, with reference to FIG. 8, the re-insertion support screen 70 displayed on the display 20 will be described. The re-insertion support screen 70 displays a “board name” display frame 71, an “inspection process” display frame 72, a “re-insertion location” display frame 73, and an “OK” button 74. The “board name” display frame 71 and the “inspection process” display frame 72 are similar to the “board name” display frame 61 and the “inspection process” display frame 62 of the repair support screen 60. In the “reloading location” display frame 73, the reloading port (opening/closing cover of the production equipment) determined by the reloading port determining unit 23 is displayed.

Note that the re-input support screen 70 is displayed not on the display 20 but on a mobile terminal owned by the worker, an ANDON provided on the production floor where the production line is located, or a display section provided on the production control device 3 or production equipment. or may be displayed overlappingly with any of the above.

In this example, the number 50 of the re-insertion port information 38 shown in FIG. , the mounting inspection apparatus M10 or the third conveyor M9 upstream of the mounting inspection apparatus M10 is displayed. When the operator operates the "OK" button 74, the display on the display 20 changes to a screen for supporting repair work on the next repair target board.

In this way, the production information acquisition unit 39 acquires the identification code C of the workpiece (board B) that has been re-introduced into the production equipment, the inspection information acquisition unit 40 acquires the inspection information 35 of the workpiece, and the repair information 36 of the workpiece. a repair information acquisition unit 41 that acquires the information, and an input port determination unit that determines whether the input port (opening/closing cover of the production equipment) into which the workpiece has been reinserted is correct or incorrect based on the identification code C, inspection information 35, and repair information 36. 43, the component mounting system 1 is a production control system that controls a plurality of production equipment that performs work or inspection on a workpiece. As a result, it is possible to perform control so that the workpieces that have undergone repair work can be re-introduced to the production lines (component mounting line L1, module assembly line L2) and production can be restarted appropriately.

Note that in the above production control system, the production control device 3 includes a production information acquisition section 39, an inspection information acquisition section 40, a repair information acquisition section 41, and an input port determination section 43, but the configuration is not limited to this. There isn't. For example, instead of the production control device 3, a line control computer that controls the component mounting line L1 and the module assembly line L2 includes a production information acquisition section 39, an inspection information acquisition section 40, a repair information acquisition section 41, and an input port determination section 43. It may be a configuration. Alternatively, the configuration may be provided in a production facility; for example, a board insertion/extraction conveyor may include a production information acquisition section 39, an inspection information acquisition section 40, a repair information acquisition section 41, and an input port determination section 43.

Next, a substrate sampling process (production control method) for extracting a board B with a defective inspection from the production line (component mounting line L1, module assembly line L2) will be explained along the flow shown in FIG. In the following, an example will be described in which the mounting inspection of the board B is performed by the mounting inspection apparatus M10 and the board B is extracted from the fourth conveyor M11. First, the mounting inspection apparatus M10 inspects the state of the component D mounted on the board B (ST1). If the inspection result is a good product (Yes in ST2), the mounting inspection device M10 carries out the substrate B to the fourth conveyor M11, and then the fourth conveyor M11 carries out the substrate B to the reflow device M12 on the downstream side.

If the inspection result is defective (No in ST2), the mounting inspection device M10 carries out the board B to the fourth conveyor M11, which is a sampling location (ST3). When the substrate B is conveyed to the sampling operation position P2 of the fourth conveyor M11, a sampling process is executed on the fourth conveyor M11 (ST4). That is, after transmitting an export prohibition command to the mounting inspection device M10, the safety device of the opening/closing cover 13 is released. When the operator opens the opening/closing cover 13 and takes out the board B, and then closes the opening/closing cover 13 and instructs to restart operation, the safety device of the opening/closing cover 13 is activated, and a transport restart command is sent to the mounting inspection device M10. Resume driving.

Next, a board re-insertion process (production control method) for re-inserting the board B into the production lines (component mounting line L1, module assembly line L2) will be described along the flow shown in FIG. In the following, an example will be described in which the board B (see FIG. 7) whose component position has been adjusted in the repair line L3 is re-injected into the third conveyor M9. First, the operator instructs the third conveyor M9 to perform re-feeding processing. As a result, the re-insertion process is executed on the third conveyor M9 (ST11). That is, when the extraction work position P2 becomes empty after transmitting the carry-out prohibition command to the component mounting apparatus M8, the safety device of the opening/closing cover 13 is released.

When the operator opens the opening/closing cover 13 and inserting the board B, the operator closes the opening/closing cover 13 and instructs to restart the operation.The operator activates the safety device of the opening/closing cover 13 and sends a transport restart command to the mounting inspection device M10. Resume driving. Next, the production information acquisition unit 39 acquires the identification code C of the substrate B (workpiece) that is re-injected into the third conveyor M9 (production equipment) (ST12), and the inspection information acquisition unit 40 inspects the re-input substrate B. The information 35 is acquired (ST13), and the repair information acquisition unit 41 acquires the repair information 36 of the reinserted board B (ST14).

In FIG. 10, the input port determination unit 43 next determines whether the input port (opening/closing of the production equipment (ST15). If the substrate B is re-inserted into the wrong input slot (No in ST15), the display processing unit 45 causes the display unit 32 to display the correct input slot (ST16). If the input port is correct (Yes in ST15), the transport judgment unit 44 determines whether or not the reinserted board B can be transported based on the work group (production program) produced by the production equipment of the component mounting line L1. Make a judgment (ST17).

Further, the transport determining unit 44 determines whether or not the reinserted board B can be transported based on the production completion deadline of the reinserted board B included in the sampled board information 34 (ST18). If it is determined that transport is possible in both (ST17) and (ST18) (Yes in ST17 and Yes in ST18), production of the reinserted board B in the component mounting line L1 is restarted (ST19). If it is determined that transport is not possible in either (ST17) or (ST18) (No in ST17 or No in ST18), that is, if the reinserted substrate B cannot be transported, the display processing unit 45 , the display section 32 displays that fact (ST20).

In this way, the identification code C of the workpiece (substrate B) that is reinserted into the production equipment (third conveyor M9) is obtained (ST12), the inspection information 35 of the reinserted workpiece is obtained (ST13), and the reinsertion process is performed. The repair information 36 of the input workpiece is acquired (ST14), and based on the identification code C, the inspection information 35, and the repair information 36, it is determined whether the input port (opening/closing cover of the production equipment) into which the workpiece has been reloaded is correct or incorrect. The substrate re-insertion process including (ST15) is a production control method for controlling a plurality of production facilities that work on or inspect a workpiece. As a result, it is possible to perform control so that the workpieces that have undergone repair work can be re-introduced to the production lines (component mounting line L1, module assembly line L2) and production can be restarted appropriately.

Note that if the repair information 36 can be acquired, the board B may be reinserted without going through the repair support device M29. For example, after a defective inspection is determined by an inspection device, etc., if the worker determines that there is no problem through visual confirmation or re-inspection, the reader 4, an input section provided in the production equipment, or a mobile terminal owned by the worker can use the board B , input that there is no problem with board B, and store it in the storage device 31. Then, the board B is re-injected into the production line at the re-input destination displayed based on the input repair information 36.

In the above, the production control system was explained using as an example the component mounting line L1 that mounts the component D on the board B and the module assembly line L2 that mounts irregularly shaped parts on the mounting board as production lines, but the production line is not limited to these. It never happens. For example, the production line may be a semiconductor production line for manufacturing semiconductors, an assembly production line for assembling electrical equipment, or a food processing line for producing processed food products.

The production control system and production control method of the present invention have the effect of being able to perform control so that workpieces that have undergone repair work can be re-introduced to the production line and production can be restarted appropriately, and parts can be mounted on boards. It is useful in the field of

1 Component mounting system (production control system)
6, 13 Opening/closing cover (inlet)
11 Inspection head (recognition section)
B Substrate (work)
C Identification code D Part M2 1st conveyor (reversing device)
M6-8 component mounting equipment (production equipment)
M10 Mounting inspection equipment (production equipment)
R1 Upper reading section (recognition section)
R2 Lower reading section (recognition section)

Claims (16)

A production control system that has a recognition unit that recognizes an identification code attached to an input workpiece and controls a plurality of production equipment that performs work or inspection on the workpiece,
a production information acquisition unit that acquires an identification code of the workpiece that has been reinjected into the production equipment;
an inspection information acquisition unit that acquires inspection information of the work;
a repair information acquisition unit that acquires repair information of the work;
A production control system, comprising: an input port determination unit that determines whether the input port into which the workpiece has been reinserted is correct or incorrect based on the identification code, the inspection information, and the repair information. The production control system according to claim 1, further comprising a display processing unit that causes a display unit to display a correct input port when the workpiece is reinserted into an incorrect input port. a time management department that manages the production completion deadline of the work;
2. The production control system according to claim 1, further comprising: a transportation determination unit that determines whether or not the reinserted workpiece can be transported based on a production completion deadline of the reinserted workpiece. 2. The production control system according to claim 1, further comprising: a transport determination unit that determines whether or not the re-introduced workpiece can be transported based on the work group produced by the production equipment. 5. The production control system according to claim 3, further comprising a display processing section that displays a message to that effect on a display section when the reinserted work cannot be transported. The production equipment includes a reversing device for reversing the workpiece,
When working on the workpiece to which the identification code is attached on a surface opposite to the surface to be worked on, the input port determining section determines that the reversing device or the input port upstream of the reversing device is correct. 6. The production control system according to any one of 1 to 5. The workpiece is a substrate,
7. The production control system according to claim 1, wherein the plurality of production facilities include a component mounting device that mounts components on the board and an inspection device that inspects the board or the components mounted on the board. If the repair of the re-injected workpiece is to adjust the position of a component mounted on a board, the input port determining unit selects the correct input port for the production equipment or upstream of the production equipment where the position of the component is to be inspected. The production control system according to claim 7, which determines that. A production control method comprising a recognition unit that recognizes an identification code attached to an input workpiece, and controlling a plurality of production equipment that performs work or inspection on the workpiece, the method comprising:
obtaining an identification code of the workpiece that has been reintroduced to the production equipment;
Obtaining inspection information of the workpiece,
Obtain repair information of the workpiece,
A production control method, comprising determining whether the input port into which the workpiece is reinserted is correct or incorrect, based on the identification code, the inspection information, and the repair information. 10. The production control method according to claim 9, further comprising displaying the correct input port on a display unit when the workpiece is reinserted into the wrong input port. Manage the production completion deadline of the workpiece,
10. The production control method according to claim 9, further comprising determining whether or not the reinserted workpiece can be transported based on the production completion deadline of the reinserted workpiece. 10. The production control method according to claim 9, further comprising determining whether or not the reintroduced workpiece can be transported based on the workgroup produced by the production equipment. 13. The production control method according to claim 11 or 12, wherein if the reinserted work cannot be transported, a display unit displays a message to that effect. The production equipment includes a reversing device for reversing the workpiece,
Any one of claims 9 to 13, wherein when working on the workpiece to which the identification code is attached on a surface opposite to the surface to be worked on, the reversing device or the input port upstream of the reversing device is determined to be correct. Production control method described. The workpiece is a substrate,
15. The production control method according to claim 9, wherein the plurality of production facilities include a component mounting device that mounts components on the board and an inspection device that inspects the board or the components mounted on the board. If the repair of the workpiece that has been re-introduced is to adjust the position of a component mounted on a board, the production equipment for inspecting the position of the component or an input port upstream from the production equipment is determined to be correct. 16. The production control method according to any one of 15 to 15.

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