Management device and work instruction determination method

Abstract

To provide a line control system and a work command determination method capable of improving production efficiency in a production line equipped with a plurality of pieces of production equipment.SOLUTION: A production line is equipped with multiple pieces of production equipment that perform operations on workpieces to produce products. A method for determining work commands in a production line acquires event information from the multiple pieces of production equipment (ST1), determines, from the acquired event information, a work command corresponding to an abnormal event of the production equipment that may occur after the time the event information is acquired (ST3), and outputs the determined work command (ST4).SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a management device and a work command determination method for controlling a production line equipped with a plurality of production facilities. [Background technology]

[0002] In production equipment such as component mounting equipment that operates on workpieces such as circuit boards to produce products such as component-mounted boards, various factors can cause abnormalities that stop production during the ongoing production process. When an abnormality occurs, workers take appropriate measures to resume production. In Patent Document 1, when such an abnormality (defect) occurs, the cause is estimated based on the defect content, and countermeasures corresponding to the estimated cause are extracted from a countermeasure database and displayed in order of highest defect coverage rate, thereby supporting the worker's work. This reduces the downtime of the production equipment due to defects and improves production efficiency. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-179535 Summary of the Invention [Problem to be solved by the invention]

[0004] However, while conventional technologies including Patent Document 1 can reduce the downtime of production equipment due to abnormalities, in order to improve production efficiency it is desirable to be able to take measures before abnormalities occur in the production equipment, and there is room for further improvement in order to improve production efficiency.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a management device and a work command determination method that can improve production efficiency in a production line equipped with a plurality of pieces of production equipment. [Means for solving the problem]

[0006] The present disclosure provides a management device for managing a production line equipped with a component mounting device that mounts components on a board to produce a component-mounted board, the management device including an event acquisition unit that acquires, as event information, information relating to a component supplying operation that supplies a component supplying device that supplies a first component to the component mounting device with a second component, and a work command determination unit that, when information indicating at least one of a production lot and a manufacturer of the second component differs from the information about the first component, determines a work command to respond to an abnormal event that occurs in the component supplying device related to the information about the component supplying operation acquired by the event acquisition unit; an output unit that outputs the determined work command; Equipped with and instructing a worker via the output unit to perform a predetermined task by the time the component supplied to the component mounting device is switched to the second component. A management device is provided. The present disclosure also provides a management device for managing a production line equipped with a component mounting device that mounts components on a board to produce a component-mounted board, the management device including: an event acquisition unit that acquires, as event information, information related to a component supplying operation for supplying a second component, which is a new component, to a component supplying device that supplies a first component to the component mounting device; and a work command determination unit that, when information indicating at least one of a production lot and a manufacturer of the second component differs from the information about the first component, determines a work command to respond to an abnormal event that occurs in the component supplying device related to the information about the component supplying operation acquired by the event acquisition unit; An abnormal event is an occurrence of an error occurring frequently when the part supplied by the part supply device is switched, and the event acquisition unit further acquires error history information relating to the error that occurred in the past, and the work order determination unit determines, based on the error history information, whether the abnormal event will occur in the part supply device related to the information relating to the part supply work acquired by the event acquisition unit, and if the number of times the error has occurred in the past when switching to the second part is large, determines that the abnormal event will occur in the part supply device and determines the work order.

[0007] The present disclosure also provides a work command determination method for a production line equipped with a component mounting device that mounts components on a board to produce a component-mounted board, the method comprising: acquiring, as event information, information relating to a component supplying operation for supplying a second component, which is a new component, to a component supplying device that supplies a first component to the component mounting device; and, when information indicating at least one of a production lot and a manufacturer of the second component differs from the information about the first component, determining a work command to respond to an abnormal event that occurs in the component supplying device related to the acquired information about the component supplying operation. and outputting the determined work command to instruct a worker to perform a predetermined work by the time when the component to be supplied to the component mounting device is switched to the second component. A method for determining work orders is provided. [Effects of the Invention]

[0008] According to the present invention, it is possible to improve production efficiency in a production line equipped with a plurality of production facilities. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram illustrating the configuration of a component mounting system according to an embodiment of the present invention. [Figure 2] FIG. 1 is a configuration explanatory diagram of a component mounting device provided in a component mounting line according to an embodiment of the present invention; [Figure 3]FIG. 1 is a block diagram showing the configuration of a control system of a component mounting system according to an embodiment of the present invention. [Figure 4] FIG. 10 is an explanatory diagram of an example of a work instruction display screen displayed on a touch panel of a display terminal according to an embodiment of the present invention. [Figure 5] 1 is a flow diagram of a work command determination method according to an embodiment of the present invention; [Figure 6] FIG. 1 is a diagram illustrating an example of an estimation model used in a line control system according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0010] An embodiment of the present invention will be described in detail below with reference to the drawings. The configurations, shapes, etc. described below are examples for explanatory purposes and can be modified as appropriate depending on the specifications of the component mounting system, component mounting line, line management computer, printing device, component mounting device, etc. In the following, corresponding elements in all drawings will be given the same reference numerals, and duplicated explanations will be omitted. In FIG. 1, the left side of the page will be referred to as the upstream side in the board transport direction, the right side of the page will be referred to as the downstream side in the board transport direction, the lower side of the page will be referred to as the front side, and the upper side of the page will be referred to as the rear side.

[0011] First, the configuration of component mounting system 1 will be described with reference to Figure 1. Component mounting system 1 is configured such that one component mounting line L1 is connected via a wired or wireless communication network 2 and is managed by a line management computer 3. Component mounting line L1 is configured by connecting multiple pieces of production equipment, including component mounting devices, as will be described later, and has the function of producing component-mounted boards, where components are mounted on boards. In other words, the production line (component mounting line L1) is equipped with multiple pieces of production equipment that work on workpieces (boards) to produce products (component-mounted boards). Note that component mounting system 1 does not necessarily have to be equipped with one component mounting line; it may be equipped with two or more.

[0012] The production equipment that makes up component mounting line L1 is connected to a line control computer 3 via a communication network 2. The work status of each piece of production equipment, event information that has occurred at each piece of production equipment, and the like are sequentially transmitted to the line control computer 3. For example, the line control computer 3 collects information on boards being carried in and out, the remaining number of components being supplied by component mounting devices, the status of component resupply work being performed by component mounting devices, equipment errors that have occurred at production equipment, information input to production equipment, information on work performed by production equipment, and the status of error recovery work by workers.

[0013] Next, the detailed configuration of component mounting line L1 will be described with reference to Figure 1. Figure 1 is a schematic representation of component mounting line L1. Component mounting line L1 has production equipment connected in series from upstream to downstream, including a loader M1, a first conveyor M2, a printing device M3, a second conveyor M4, a print inspection device M5, a third conveyor M6, a component mounting device M7, a component mounting device M8, a fourth conveyor M9, a mounting inspection device M10, a fifth conveyor M11, a reflow device M12, and an unloader M13.

[0014] Each production facility has two transport units 4, one on the front side and one on the rear side, that transport boards (workpieces) from upstream to downstream. The transport units 4 connected to each other on the component mounting line L1 form a front transport lane 4F on the front side and a rear transport lane 4R on the rear side. That is, the component mounting line L1 has a front transport lane 4F and a rear transport lane 4R in parallel, and can transport boards in parallel. Note that the number of transport units 4 provided in each production facility is not limited to two, and may be one, three, or more.

[0015] In FIG. 1, the loader M1 has a board supply work unit (work unit) that supplies boards or component-mounted boards with components mounted on the board to downstream production equipment. Hereinafter, unless otherwise specified, the term "board" will be used to refer to both component-mounted boards and boards in the middle of production with solder printed on them. The printing device M3 has a printing work unit (work unit) that performs a solder printing operation to screen-print solder for joining components onto the board. The print inspection device M5 has a print inspection work unit (work unit) that performs a print inspection operation to inspect the condition of the solder printed on the board.

[0016] The component mounting line L1 may be configured with a printing device M3 equipped with one printing work unit (work unit), or may be configured with multiple printing devices M3 equipped with one printing work unit (work unit).The component mounting line L1 may also be configured with a print inspection device M5 equipped with one print inspection work unit (work unit).The component mounting line L1 may also be configured with component mounting devices M7 and M8 equipped with one mounting work unit (work unit).

[0017] The component mounting devices M7 and M8 are equipped with a mounting work section (work section) that performs component mounting work to mount components on boards on which solder has been printed. The mounting inspection device M10 is equipped with a mounting inspection work section (work section) that performs mounting inspection work to inspect the state of components mounted on the board. The reflow device M12 is equipped with a reflow work section (work section) that performs reflow work to heat the board to melt the solder, then harden it, and solder-bond the electrodes on the board to the terminals of the components. The component mounting line L1 may be composed of a mounting inspection device M10 equipped with one mounting inspection work section (work section). It may also be composed of a reflow device M12 equipped with one reflow work section (work section).

[0018] The unloader M13 is equipped with a board recovery work section (work section) that performs board recovery work to recover boards transported from the upstream side. The first conveyor M2, the second conveyor M4, the third conveyor M6, the fourth conveyor M9, and the fifth conveyor M11 are equipped with board transport work sections (work sections) that perform board transport work to temporarily store boards unloaded from upstream production equipment and transport them to downstream production equipment.

[0019] In this way, the production equipment is equipped with a working section that performs work on the workpieces (boards). In the component mounting line L1, the boards are transported by the transport section 4 of the production equipment from upstream to downstream in the front transport lane 4F and the rear transport lane 4R, while the working section of the production equipment performs production work on the boards to produce component-mounted boards. In the component mounting line L1, component-mounted boards of the same board type can be produced in parallel in the front transport lane 4F and the rear transport lane 4R, or component-mounted boards of different board types can be produced in parallel.

[0020] The configuration of the production equipment on component mounting line L1 can be freely changed depending on the type of component-mounted boards to be produced and the production volume. In addition to the production equipment described above, component mounting line L1 may also be equipped with a laser marking device that engraves numbers or other information onto boards with a laser, a solder dispensing device that applies solder to boards, a conveyor device with a built-in mark reading function that has a camera that reads marks on boards, a board inverting device that inverts the front and back sides of boards, and a post-reflow inspection device that inspects the condition of boards after reflow. As long as component mounting line L1 is equipped with printing device M3 and component mounting devices M7 and M8, the arrangement of other production equipment is not limited.

[0021] In Fig. 1, worker A working on component mounting line L1 carries a display terminal 5. The display terminal 5 is a smartphone, tablet PC, or the like, and is equipped with a terminal-side communication unit 6 that wirelessly communicates with the line management computer 3 to send and receive information, and a touch panel 7 (display unit) that has display and input functions. The display terminal 5 displays various pieces of information received from the line management computer 3 and processes them for display on the touch panel 7. The display terminal 5 also transmits various pieces of information input from the touch panel 7 to the line management computer 3.

[0022] Next, the configuration of component mounting devices M7 and M8 will be described with reference to Figure 2. Component mounting devices M7 and M8 have the same configuration, and here, component mounting device M7 will be described. A shutter 9 is installed above the center of the front surface of component mounting device M7 to prevent workers from accidentally touching moving parts such as the mounting head 8 that mounts components on the board and the head moving mechanism (not shown) that moves the mounting head 8 horizontally. A component supply unit 10 is provided below the center of the front surface of component mounting device M7 (below the shutter 9).

[0023] Component supply unit 10 has mounted on its upper part a carriage 12 that holds a plurality of tape feeders 11, which are component supply devices, in parallel. On carriage 12, a plurality of reels 13 that wind and store component supply tapes that store components are held in parallel below tape feeders 11. Tape feeder 11 transports the component supply tape pulled out from reel 13 inside, and supplies the components stored on the component supply tape to component mounting device M7 in sequence.

[0024] When the number of components remaining on the component supply tape becomes low, worker A performs a component supply operation to replenish components into tape feeder 11 by splicing a new component supply tape onto the rear end of the component supply tape that is currently supplying components, or by inserting a new component supply tape into tape feeder 11. Furthermore, the components may be supplied in any form other than component supply tapes, such as stick-shaped cases containing components, tray cases on which components are placed, or bulk cases containing components, and are supplied by a supply means appropriate for each.

[0025] In Fig. 2, an operation panel 14 is installed in the upper right part of the front surface. The operation panel 14 displays various information, warning information, operation buttons, input buttons, etc. on its display unit. Worker A operates the operation buttons, input buttons, etc. displayed on the operation panel 14 to operate the component mounting device M7. In addition to the front surface, the component mounting device M7 is also provided with a mounting head 8, a head moving mechanism, a shutter 9, a component supply unit 10, and an operation panel 14 on its rear surface. The transport unit 4, mounting head 8, head moving mechanism, tape feeder 11, and operation panel 14 of the component mounting device M7 are controlled by a mounting control unit 15 provided in the component mounting device M7.

[0026] The mounting control unit 15 performs component mounting work by repeating a series of turns to have the mounting head 8 pick up the components supplied by the tape feeder 11 and transfer the components held by the mounting head 8 to the mounting position on the board held at the mounting work position of the transport unit 4. In other words, the mounting head 8, the head moving mechanism, and the tape feeder 11 constitute a mounting work unit 32 (see FIG. 3) (working unit) that performs the component mounting work.

[0027] In this way, component mounting device M7 mounts components on the board to produce a component-mounted board. Mounting control unit 15 causes the two transport units 4 and the two component mounting units to perform their respective tasks in accordance with work instructions from line management computer 3. In addition, mounting control unit 15 transmits to line management computer 3 the status of the component mounting work in component mounting device M7, information on any events that have occurred, and the like.

[0028] Next, the configuration of the control system of the component mounting system 1 will be described with reference to Fig. 3. Here, the configuration related to the work command determination process that determines work commands corresponding to abnormal events that may occur in the production equipment of the component mounting line L1 will be described. The line management computer 3 includes an information processing device 20, a storage device 21, and a wireless communication unit 22. The storage device 21 stores production data information 23, worker information 24, event information 25, estimation model information 26, work command information 27, etc.

[0029] The information processing device 20 includes, as internal processing units, an event acquisition unit 28, a machine learning unit 29, a work command determination unit 30, and an output unit 31. The wireless communication unit 22 is a wireless communication interface, and wirelessly communicates with the terminal communication unit 6 of the display terminal 5 and the like to send and receive data. The line management computer 3 does not need to be configured as a single computer, but may be configured as multiple devices. For example, all or part of the storage device and internal processing units may be provided in the cloud via a server.

[0030] 3, the production equipment provided on component mounting line L1 includes a work unit that performs production work, a work control unit that controls the work unit, a work acquisition unit that acquires work commands from line management computer 3, and a work memory unit that is a storage device that stores the acquired work commands, etc. Here, of the production equipment provided on component mounting line L1, component mounting device M7 will be described as an example. That is, component mounting device M7 includes mounting work unit 32 that is a work unit, mounting control unit 15 that is a work control unit, equipment acquisition unit 33, and equipment memory unit 34.

[0031] The display terminal 5 carried by worker A includes a terminal-side communication unit 6 that communicates wirelessly with the wireless communication unit 22 included in the line management computer 3, a touch panel 7 with a display function, a display control unit 35 that controls each unit of the display terminal 5, a terminal acquisition unit 36 ​​that acquires work instructions from the line management computer 3, and a terminal storage unit 37 that is a storage device that stores the acquired work instructions, etc. In other words, the display terminal 5 has a display unit (touch panel 7) that displays information, and a display control unit 35 that controls the display unit.

[0032] 3, production data information 23 stores information necessary for component mounting work, such as the type of components to be mounted on the board, the mounting position, and the supply position of the components in component supply units 10 of component mounting devices M7 and M8, for each type of component-mounted board produced on component mounting line L1. Worker information 24 stores, for each worker number of worker A working on component mounting line L1, the work schedule including the work level, work schedule, and break time.

[0033] The event acquisition unit 28 acquires event information 25 from multiple pieces of production equipment that make up the component mounting line L1, and stores it in the storage device 21. The event information 25 includes information about work performed by the production equipment, information about the board (workpiece) on which the work is performed, information about work performed on the production equipment by worker A or the like, and the like. The event information 25 also includes various information that occurs in association with production, such as equipment errors that have occurred in the production equipment, error recovery work, event information for the production equipment, the remaining number of materials (solder, parts) for the production equipment, and supply work.

[0034] In this way, information about events that have occurred in the past as well as information about events that have occurred most recently is stored (accumulated) in the event information 25. That is, the event information 25 also includes information about abnormal events that have occurred in the production facilities in the past, such as shutdowns of the production facilities and declines in the availability rate of the production facilities.

[0035] 3, the machine learning unit 29 generates an estimation model by machine learning that estimates an abnormal event that may occur in the production equipment and an appropriate work command for dealing with the abnormal event, based on event information 25 that has occurred in the past, including an abnormal event, stored in the storage device 21, work commands sent (output) from the line management computer 3 to the production equipment or the display terminal 5 to deal with the abnormal event, and event information 25 after the work command is issued. That is, the machine learning unit 29 generates the estimation model by machine learning based on the past event information 25, the abnormal event, and the work command. The generated estimation model is stored in the storage device 21 as estimation model information 26.

[0036] Based on the estimation model included in the estimation model information 26, the work command determination unit 30 estimates, from the event information 25 acquired by the event acquisition unit 28, an abnormal event of the production equipment that may occur after the acquisition of the event information 25, and determines a work command corresponding to this abnormal event. The determined work command is associated with information specifying the production equipment or display terminal 5 to which the work command should be output, the time when the work command should be output, etc., and stored in the storage device 21 as work command information 27.

[0037] For example, when event information 25 is acquired indicating that a component mounting defect has been detected in the rear transport lane 4R of the mounting inspection device M10, the work command determination unit 30 estimates, based on the estimation model, that a board backlog (abnormal event) will occur in the rear transport lane 4R upstream of the mounting inspection device M10. Then, the work command determination unit 30 determines a work command to instruct the component mounting devices M7 and M8 to prioritize component mounting work in the front transport lane 4F, and to instruct the display terminal 5 to instruct worker A to move to the rear of the mounting inspection device M10 and take action to resolve the mounting defect.

[0038] Furthermore, if new parts supplied to tape feeder 11 by part supply work are from a different production lot or manufacturer than the parts currently being supplied, and if pickup errors due to incorrect pickup have frequently occurred in the past with similar parts when parts are switched, work command determination unit 30 estimates based on the estimation model that pickup errors will frequently occur immediately after the parts being supplied are switched. Then, work command determination unit 30 determines a work command to display terminal 5 to instruct worker A to move to the rear of tape feeder 11 and wait in preparation for a pickup error.

[0039] 3, an output unit 31 outputs the work command determined by the work command determination unit 30 and included in the work command information 27 to the production equipment or the display terminal 5 at the required output time. An equipment acquisition unit 33 of the component mounting device M7 acquires the work command output from the output unit 31 of the line management computer 3 and stores it in an equipment memory unit 34. A mounting control unit 15 (work control unit) controls a mounting work unit 32 (work unit) based on the acquired work command. For example, in the case of a work command to prioritize component mounting work on the front transport lane 4F, if there are boards to be mounted on in both the front transport lane 4F and the rear transport lane 4R, the mounting control unit 15 causes component mounting work on the board in the front transport lane 4F to be performed first.

[0040] The terminal acquisition unit 36 ​​of the display terminal 5 acquires the work instructions output from the output unit 31 of the line management computer 3 and stores them in the terminal storage unit 37. The display control unit 35 displays the acquired work instructions on the touch panel 7 (display unit).

[0041] An example of a work command display screen 40 displayed on the touch panel 7 will now be described with reference to FIG. 4. The work command display screen 40 displays a "work command" display frame 41 and an "OK" button 42. The acquired work command is displayed in the "work command" display frame 41. In this example, the message displayed is "Wait in preparation for a pickup error that may occur due to a change in the lot of the component (R014) being supplied from the front slot 6 of the first component mounting device (component mounting device M7) at around 14:26." When worker A operates the "OK" button 42, the display screen changes to the following screen.

[0042] As described above, the line management computer 3 is a line control system that controls the component mounting line L1 (production line), and includes an event acquisition unit 28 that acquires event information 25 from multiple pieces of production equipment, a work command determination unit 30 that determines, from the acquired event information 25, a work command corresponding to an abnormal event of the production equipment that may occur after the point in time at which the event information 25 was acquired, and an output unit 31 that outputs the determined work command. By estimating abnormal events that may occur based on the event information 25 acquired from multiple pieces of production equipment and outputting appropriate work commands to the production equipment and worker A, it is possible to improve production efficiency in a production line (component mounting line L1) that has multiple pieces of production equipment.

[0043] Next, a work command determination method for a component mounting line L1 (production line) equipped with multiple pieces of production equipment that perform operations on boards (workpieces) to produce component-mounted boards (products) will be described with reference to the flow chart in Figure 5. While component mounting line L1 is producing component-mounted boards, event acquisition unit 28 acquires event information 25 from the multiple pieces of production equipment (ST1: event information acquisition step). Next, work command determination unit 30 determines, from the acquired event information 25, whether an abnormal event may occur in the production equipment after the point in time at which event information 25 was acquired (ST2). If it is determined that an abnormal event will not occur (No in ST2), the process returns to the event information acquisition step (ST1) and event information 25 is collected.

[0044] If it is determined that an abnormal event will occur (Yes in ST2), the work command determination unit 30 determines a work command corresponding to the possible abnormal event (ST3). In steps (ST2) and (ST3), the work command determination unit 30 estimates the abnormal event based on an estimation model generated by machine learning based on past event information 25, the abnormal event, and the work command (ST2), and determines a work command (ST3). Next, the output unit 31 outputs the determined work command to the production equipment or the display terminal 5 (ST4: work command output step). Then, until component mounting boards on component mounting line L1 are completed (No in ST5), the process returns to the event information acquisition step (ST1) and event information 25 is repeatedly acquired.

[0045] In this way, by estimating possible abnormal events based on event information 25 acquired from multiple pieces of production equipment (ST2), determining work instructions (ST3), and outputting appropriate work instructions to the production equipment and worker A (ST4), it is possible to improve production efficiency in a production line (component mounting line L1) equipped with multiple pieces of production equipment.

[0046] 5, when a work command is output to production equipment in the work command output step (ST4), the equipment acquisition unit 33 of the production equipment acquires the work command, the work control unit controls the work unit based on the acquired work command, and the work unit performs work on the board (workpiece). Also, when a work command is output to the display terminal 5 in the work command output step (ST4), the terminal acquisition unit 36 ​​of the display terminal 5 acquires the work command, and the display control unit 35 displays the acquired work command on the touch panel 7 (display unit) of the display terminal 5. This allows worker A to take appropriate action before an abnormal event occurs.

[0047] Here, we will explain in more detail the estimation model included in estimation model information 26, which is used by work command determination unit 30 to determine work commands. To create an estimation model, event information 25, abnormal events, and work commands are acquired in advance or from production equipment that has undergone actual production or test production. The estimation model is then created by repeatedly executing learning based on a data set including these.

[0048] As an example of learning an estimation model, we will explain an estimation model trained by machine learning using a neural network. Figure 6 schematically shows an estimation model E of a multi-layer neural network configured by combining neurons N. Multiple pieces of event information 25 (X1 to X5) are input from the left side, each is multiplied by a corresponding weight W, and the resulting work commands (Y1 to Y5) are output from the right side. Note that since it is sufficient if the estimation model can ultimately estimate a work command, an abnormal event can be estimated from the multiple pieces of event information 25 input, and the work command can be determined from a correlation table that associates the abnormal event with the work command.

[0049] The estimation model E may be constructed using a learning algorithm that subdivides the input event information 25 not only by event but also by time, worker A, board type, etc. Alternatively, the estimation model E may be constructed using a learning algorithm that combines multiple learning algorithms.

[0050] As an example of a learning algorithm segmented by time, we will explain abnormal events and their work instructions that occur during production hours. Some production factories have break times set aside at specified times, during which some or all of the workers A take a break while the production equipment continues to operate. If work on the production equipment occurs during such time periods, there may not be enough workers A available to handle the break, which could lead to delays in work such as parts replenishment, or abnormal events such as work stoppages due to accumulated delays. Work instructions associated with these abnormal events include parts replenishment before a break or a change in the number of workers A taking a break. Therefore, using such relationships, an estimation model E can be constructed by having a learning algorithm learn time periods when the number of workers fluctuates, such as breaks, abnormal events, and work instructions.

[0051] As another example, the timing of production time periods during the initial production stage, when switching between board types, or when switching between parts supplies can cause production equipment to operate stably or automatic adjustments to production data can occur, which can lead to delays in production equipment work or abnormal events such as work stoppages due to accumulated delays. Work instructions associated with these abnormal events include rechecking production equipment and production data. Therefore, using these relationships, the estimation model E can be constructed by learning production time periods, abnormal events, and work instructions using a learning algorithm.

[0052] Next, as an example of a learning algorithm segmented by worker, we will explain abnormal events that occur due to the number of workers corresponding to production equipment and the work instructions for those events. The work capacity for production equipment that can be handled per unit time varies depending on the number of workers A. Furthermore, if there are many workers A, the work capacity for production equipment that can be handled increases, and becomes stable above a certain number of workers. Furthermore, if there are few workers A, the work capacity for production equipment that can be handled decreases.

[0053] Therefore, the number of tasks that can be completed per unit time varies depending on the number of workers, and depending on the number of tasks, tasks may not be completed in a timely manner, which could lead to abnormal events such as work delays and work stoppages due to accumulated delays.The work instructions associated with these abnormal events correspond to setting an appropriate number of workers (a number of workers that is equal to or greater than a predetermined work capacity, but is less than the number of workers that does not stabilize the worker capacity).Therefore, by using this relationship to build an estimation model E by having a learning algorithm learn the number of workers, abnormal events, and work instructions corresponding to the production equipment, it is possible to predict future abnormal events.

[0054] Another learning algorithm will be described, which deals with abnormal events that occur due to a specific worker who is working on production equipment and the associated work instructions. The work ability of worker A affects the work capacity, work time, and work success rate that can be handled per unit time for the production equipment. The more years of experience a worker has, the greater his or her work ability for the production equipment increases, the shorter the work time, and the higher the work success rate.

[0055] Therefore, workers with less experience may experience work delays due to work mistakes, or work stoppages due to the accumulation of such delays. The work instructions associated with these abnormal events correspond to the appropriate settings for Worker A (grouping that equalizes work ability). Therefore, by using this relationship to construct an estimation model E that learns the work ability, work time, and work success rate of Worker A corresponding to the production equipment, as well as abnormal events such as work delays and work stoppages due to the accumulation of such delays, and work instructions as a learning algorithm, future abnormal events can be predicted.

[0056] Next, as an example of a learning algorithm segmented by board type, we will explain abnormal events and associated work instructions that occur due to the type of board produced in production equipment. The mounting difficulty of boards produced in production equipment varies depending on the components to be mounted, the circuit formation pattern, the board material, etc. For example, high printing precision and mounting precision are required for micro-components and narrow-area mounting, and as the occurrence of printing defects and mounting defects increases, there is a tendency for abnormal events such as production delays and equipment stoppages to increase.

[0057] Work instructions associated with these abnormal events include setting optional functions to improve printing accuracy and mounting accuracy, reducing production speed, etc. Therefore, by using this relationship to learn the board type, abnormal events, and work instructions as a learning algorithm and constructing an estimation model E, it is possible to predict future abnormal events. Note that the board type here not only refers to the production model, but also includes the types of components to be mounted, circuit formation patterns, board materials, etc.

[0058] This embodiment is not limited to a specific machine learning technique. Other examples include supervised learning, which learns the relationship between input and output using training data in which output information is assigned to the input information; unsupervised learning, which builds a data structure only from input without output information; semi-supervised learning, which handles both with and without output information; and reinforcement learning, which learns the action that can obtain the most feedback by obtaining feedback for the action selected from the observation results of the state. Specific machine learning techniques include neural networks (including deep learning using multi-layer neural networks), genetic programming, decision trees, Bayesian networks, and support vector machines (SVMs).

[0059] Although the above description of the line control system uses a component mounting line L1 that mounts components onto circuit boards as an example of a production line, the production line is not limited to this. For example, the production line may be a semiconductor production line that manufactures semiconductors, an assembly production line that assembles electrical equipment, or a food processing line that produces processed food products. [Industrial Applicability]

[0060] The management device and work command determination method of the present invention have the effect of improving production efficiency in a production line equipped with a plurality of production facilities, and are useful in the field of mounting components onto a circuit board. [Explanation of symbols]

[0061] 3. Line management computer (line control system) 5 Display terminal 7 Touch panel (display) 8 Mounting head (working section) 11 Tape feeder (working section) L1 Component mounting line (production line) M1 Loader (production equipment) M2 First conveyor (production equipment) M3 Printing Equipment (Production Equipment) M4 Second conveyor (production equipment) M5 Printing Inspection Device (Production Equipment) M6 3rd conveyor (production equipment) M7, M8 component mounting equipment (production equipment) M9 4th conveyor (production equipment) M10 Mounting inspection equipment (production equipment) M11 5th conveyor (production equipment) M12 reflow device (production equipment) M13 Unloader (production equipment)

Claims

1. A management device that manages a production line equipped with a component mounting device that mounts components on a board to produce component-mounted boards, an event acquisition unit that acquires, as event information, information regarding a component supply operation for supplying a second component, which is a new component, to a component supply device that supplies a first component to the component mounting device; a work command determination unit that, when information indicating at least one of a production lot and a manufacturer of the second part differs from the information of the first part, determines a work command to deal with an abnormal event that occurs in the part supply device related to the information regarding the part supply work acquired by the event acquisition unit; an output unit that outputs the determined work command, instructing a worker via the output unit to perform a predetermined task by the time the components supplied to the component mounting device are switched to the second components; Management device.

2. the predetermined task is to move to the component supply device related to the event information and wait there. The management device according to claim 1 .

3. A management device for managing a production line equipped with a component mounting device that mounts components on a board to produce a component-mounted board, an event acquisition unit that acquires, as event information, information regarding a component supply operation for supplying a second component, which is a new component, to a component supply device that supplies a first component to the component mounting device; a work command determination unit that, when information indicating at least one of a production lot and a manufacturer of the second part differs from the information of the first part, determines a work command to deal with an abnormal event that occurs in the part supply device related to the information on the part supply work acquired by the event acquisition unit, The abnormal event is an event in which an error occurs frequently at a timing when the component supplied by the component supply device is switched, the event acquisition unit further acquires error history information relating to the error that occurred in the past; the work command determination unit determines, based on the error history information, whether the abnormal event will occur in the component supply device associated with the information on the component supply operation acquired by the event acquisition unit; If the number of times the error occurred when switching to the second part in the past is large, it is determined that the abnormal event will occur in the part supply device, and the work command is determined. Management device.

4. the work command determination unit uses an estimation model generated by machine learning using the error history information and the past abnormal events as input information to determine whether the abnormal event will occur in the component supply device associated with the information on the component supply work acquired by the event acquisition unit. The management device according to claim 3 .

5. 1. A work command determination method in a production line equipped with a component mounting apparatus that mounts components on a board to produce a component-mounted board, comprising: acquiring, as event information, information relating to a component supply operation for supplying a second component, which is a new component, to a component supply device that supplies a first component to the component mounting device; determining a work command to deal with an abnormal event occurring in the component supply device related to the acquired information on the component supply work when the information indicating at least one of the production lot and the manufacturer of the second component differs from the information on the first component; outputting the determined work command; instructing a worker to perform a predetermined task by the time the components supplied to the component mounting device are switched to the second components; Work order determination method.

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