JP2023019422A - Production management system - Google Patents

Abstract

To provide a technology capable of flexibly coping with adjustment of subsequent production in the event that a production plan has been modified.SOLUTION: A production management system includes a memory unit that stores a production process table, which specifies an implementation plan for a mounting process of mounting electronic components on each substrate, on the basis of a production plan for plural types of substrates, an input unit that inputs a modification to the production plan, a modified production process table generation unit that, when the modification to the production plan is inputted, selects a modified production process table, which corresponds to a production plan for a time point subsequent to a time point when the production plan is modified, from among plural patterns on the basis of the modification to the production plan and the production process table, and generates the modified production process table, and a display unit that displays the modified production process table generated by the modified production process table generation unit. The plural patterns include a first modification pattern signifying that an implementation plan for a first mounting process which is an object of modifying the production plan is modified and an implementation plan for a second mounting process to be implemented subsequently is sustained, and a second modification pattern signifying that the second implementation plan is modified along with modification of the implementation plan for the first mounting process.SELECTED DRAWING: Figure 6

Description

The technology disclosed in this specification relates to a production management apparatus that manages production in a component mounting machine that mounts electronic components on boards.

2. Description of the Related Art Some component mounters that mount electronic components on boards have a production management apparatus that manages a production plan for the boards executed by the component mounters. A component mounter normally carries out production according to a preset production plan, but the production plan may be changed during production. In such a case, the subsequent production plan after the production plan is changed may be affected, and it may be necessary to change the subsequent production plan after the change. For example, Patent Literature 1 discloses an example of a management device capable of editing a production process chart generated based on a production plan.

Japanese Patent Application Laid-Open No. 2004-38326

In the management device of Patent Literature 1, the subsequent production process chart after the production plan is changed can be changed, and the content of the change is generated by the operator. On the other hand, it is troublesome for the operator to manually change each time, so it is required that the production control apparatus automatically performs such change work. However, when changing the subsequent production flow chart, depending on the situation at that time, for example, whether the subsequent production should be executed on the same day or the next day, etc. In some cases, it is better to change the process chart significantly, and in other cases it is not necessary to change it at all. When the production management device automatically changes the subsequent production process chart, it is not always possible to change to the desired production process chart according to the situation, and it is difficult to respond flexibly.

This specification discloses a technology capable of flexibly adjusting subsequent production when the production plan is changed.

A production management apparatus disclosed in the present specification manages production in a component mounter that mounts electronic components on boards. The production control device has a storage unit for storing a production process chart indicating an execution plan for a mounting process for mounting electronic components on each board based on a production plan for a plurality of types of boards, and an input for inputting changes in the production plan. and when a change in the production plan is input from the input unit, it corresponds to the production plan after the change in the production plan based on the change in the production plan and the production process chart stored in the storage unit. and a display unit for displaying the changed production process chart generated by the changed production process chart generation part. . A plurality of patterns change the implementation plan of the first mounting process to be changed in the production plan, and the first change to maintain the implementation plan of the second mounting process to be executed after the first mounting process. A pattern and a second change pattern in which the second implementation plan is also changed in accordance with the change in the implementation plan of the first mounting process.

The above-described production control apparatus is configured to be able to display a plurality of patterns of changed production process charts corresponding to the production plan after the production plan is changed, when the production plan is changed. Therefore, the operator can select the modified production process chart according to the situation, and can respond flexibly.

The figure which shows schematic structure of a component mounter. Sectional drawing in the II-II line of FIG. FIG. 2 is a diagram showing the system configuration of the production management device according to the first embodiment; FIG. The figure which shows an example of a production process chart. 6 is a flowchart showing an example of processing for generating a modified production process chart by changing the production process chart when the production plan is changed. FIG. 10 is a diagram showing an example of a modified production process chart, where (a) shows a modified production process chart for a first change pattern and (b) shows a modified production process chart for a second change pattern;

The main features of the embodiments described below are listed. It should be noted that the technical elements described below are independent technical elements, and exhibit technical usefulness alone or in various combinations, and are limited to the combinations described in the claims as filed. not a thing

In the production management device disclosed in this specification, when there is a change in the production plan, the first change pattern that maintains the execution plan corresponding to the original production process chart as much as possible, and the original production process chart A second change pattern is generated for changing the execution plan to be executed. Therefore, it is possible to select a change pattern according to the situation, and to flexibly adjust production after changing the production plan.

In the production control apparatus disclosed in this specification, the first interval time may be set in the production process chart between the mounting processes for each of the multiple types of boards. In the second change pattern, the length of the first interval time may be adjusted. While it is difficult to change the time required for processes related to actual work, it is easy to change the interval time. By adjusting the interval time, it is possible to easily change the production process chart of the second change pattern.

In the production management apparatus disclosed in this specification, the production process chart is the execution time of the external setup process for executing preparatory work outside the component mounter in order to produce each type of board for each of a plurality of types of boards. External setup time, internal setup time, which is the execution time of internal setup processing for executing preparation work for the component mounter, production time for executing mounting processing, and any of external setup processing, internal setup processing, and mounting processing A second interval time provided between the two may be set.

In the production management apparatus disclosed in this specification, when a change related to at least one production time of the external setup process, the internal setup process, and the mounting process for a specific type of board is input from the input unit, a modified production process chart is generated. The department may change the length of the second interval time for the types of boards to be produced after that, including the specific type of boards, to generate a plurality of patterns of modified production program schedules. According to such a configuration, when changing the production process chart, the length of the second interval time set between each process for producing a specific substrate can be adjusted, making it easy to change the production process chart. can be done.

A production management device 50 according to an embodiment will be described with reference to the drawings. The production management device 50 manages production in the mounter 10 . Specifically, the production management device 50 is a production plan showing an execution plan of a mounting process for mounting the electronic components 4 on each circuit board 2 in the component mounter 10, regarding a production plan for producing a plurality of types of circuit boards 2. Generate a schedule. The mounter 10 manufactures multiple types of circuit boards 2 according to the production process chart generated by the production management device 50 .

First, the component mounter 10 that manufactures the circuit board 2 in accordance with the production process chart generated by the production management device 50 will be described. As shown in FIGS. 1 and 2, the component mounter 10 includes a plurality of component feeders 12, a feeder holding section 14, a mounting head 16, a head moving device 18, a board conveyor 20, a touch panel 24, a control A device 26 is provided. Each component feeder 12 accommodates a plurality of electronic components 4 . The component feeder 12 is detachably attached to the feeder holding portion 14 and supplies the electronic components 4 to the mounting head 16 . A specific configuration of the component feeder 12 is not particularly limited. Each component feeder 12 is, for example, a tape-type feeder that accommodates a plurality of electronic components 4 on a winding tape, a tray-type feeder that accommodates a plurality of electronic components 4 on a tray, or a plurality of electronic components 4 in a container. can be any bulk feeder that randomly contains

The feeder holding portion 14 has a plurality of slots, and the component feeder 12 can be detachably installed in each of the plurality of slots. The feeder holding section 14 may be fixed to the component mounter 10 or may be detachable from the component mounter 10 . The mounting head 16 detachably holds one or more suction nozzles 6 , picks up the electronic component 4 supplied by the component feeder 12 using the suction nozzle 6 , and mounts the electronic component 4 onto the circuit board 2 . At this time, the head moving device 18 moves the mounting head 16 with respect to the component feeder 12 and the circuit board 2 . As a result, the electronic component 4 is picked up from a specific component feeder 12 among the plurality of component feeders 12 and mounted at a predetermined position on the circuit board 2 . The board conveyor 20 carries in, supports and carries out the circuit board 2 .

The touch panel 24 is a display device that provides various types of information about the mounter 10 to the operator, and is an input device that receives instructions and information from the operator. The control device 26 is configured using a computer having a CPU and memory. The control device 26 is communicably connected to the production control device 50 . The control device 26 controls the operation of each part of the mounter 10 based on the production program (mounting data) transmitted from the production management device 50 .

Next, the production control device 50 will be explained. The production management device 50 is communicably connected to the mounter 10 . The production control device 50 determines the type and position of the electronic component 4 to be mounted on the circuit board 2 by the component mounter 10 and instructs the component mounter 10 accordingly. The required electronic components 4 are mounted on the circuit board 2 by the component mounter 10 operating based on the instructions from the production control device 50 . Moreover, as shown in FIG. The calculation unit 52 is configured using a computer having a CPU and memory. The input unit 40 receives input of component information regarding the type of each electronic component 4 and board information regarding the circuit board 2 . The input unit 40 also receives input of information regarding changes in the production plan. The display unit 42 displays a production process chart (described later) for producing a plurality of types of circuit boards 2, and displays the changed production process chart when the production plan is changed.

The calculation unit 52 also includes a production process chart storage unit 54 and a modified production process chart generation unit 56 . The calculation unit 52 functions as the modified production process chart generation unit 56 shown in FIG. 3 by executing the program stored in the memory. The processing of the modified production process chart generator 56 will be described in detail later. The production process chart storage unit 54 stores a production process chart for carrying out a production plan for producing a plurality of types of circuit boards 2 . The production process chart shows the implementation plan of the mounting process for mounting the electronic components 4 on each circuit board 2 in the component mounter 10 .

Here, the production process chart stored in the production process chart storage unit 54 will be described with reference to FIG. When the circuit board 2 is produced, in addition to the mounting process for mounting the electronic component 4 on the circuit board 2, a preparatory process for implementing the mounting process is required. Specifically, in order to produce the circuit board 2, a picking process, an external setup process, an internal setup process, and a mounting process are performed. The picking process is a process of picking the required circuit boards 2 and component feeders 12 (more specifically, the component feeders 12 containing the required electronic components 4) from the warehouse. The external setup process is a process of arranging the circuit board 2 and the component feeder 12 picked in the picking process at a predetermined position near the component mounter 10 . The internal setup process is a process of attaching the circuit board 2 and the component feeder 12 placed at a predetermined position near the component mounter 10 in the external setup process to the component mounter 10 . That is, in the internal setup process, the circuit board 2 is placed on a board loader (not shown) that supplies the circuit board 2 to the component mounter 10 , and the component feeder 12 is placed in a predetermined slot of the feeder holding section 14 . The picking process, the external setup process, and the internal setup process are performed by workers. The picking process, the external setup process, and the internal setup process may be automatically executed by a robot. When the picking process, the external setup process, and the internal setup process are performed, the mounting process can be performed. The picking process, the external setup process, the internal setup process, and the mounting process are set for each type of circuit board 2 to be produced. The production process chart sets the execution time (that is, start time and end time) of each process for producing a plurality of types of circuit boards 2 .

FIG. 4 shows an example of a production process chart. In FIG. 4, "Pi" indicates the execution time of the picking process, "O" indicates the execution time of the external setup process, "I" indicates the execution time of the internal setup process, and "Pr" indicates the execution time of the mounting process. indicate the time. Also, "01" following the alphabet indicating each process indicates that the process is related to the production of the first type circuit board 2, and similarly, "02" and "03" following the alphabet indicating each process. indicate that the processing is related to the production of the second and third types of circuit boards 2, respectively.

As a process for producing the first type of circuit board 2, the first external setup process O01 is performed after the first picking process Pi01 is completed, and the first internal setup process I01 is performed after the first external setup process O01 is completed. After the first internal setup process I01 ends, the first mounting process Pr01 is performed. Therefore, the execution times of the first picking process Pi01, the first external setup process O01, the first internal setup process I01, and the first mounting process Pr01 related to the production of the first type of circuit board 2 do not overlap.

On the other hand, part of the processing relating to the second type of circuit board 2 different from the first type of circuit board 2 can be overlapped with the processing relating to the production of the first type of circuit board 2 . Specifically, since the picking process Pi and the external setup process O are processes executed outside the mounter 10, the internal setup process I and the mounting process Pr executed by the mounter 10 are being executed. is also feasible. Therefore, the execution times of the second picking process Pi02 and the second external setup process O02 are set so as to overlap the execution times of the first internal setup process I01 and the first mounting process Pr01. With this setting, during execution of the first internal setup process I01 and the first mounting process Pr01 related to the production of the first type of circuit board 2, one part of the preparation for the second type of circuit board 2 to be produced next can be performed. part (that is, the second picking process Pi02 and the second external setup process O02) can be executed.

During execution of the first internal setup process I01 and the first mounting process Pr01, the second internal setup process I02 and the second mounting process Pr02, which are operations in the mounter 10, often cannot be executed. Therefore, the execution times of the second internal setup process I02 and the second mounting process Pr02 are set after the execution time of the first mounting process Pr01.

Between each process, an interval time can be set during which no process is executed. In the example of FIG. 4, between the external setup process O and the internal setup process I related to the production of the same circuit board 2 (for example, between the second external setup process O02 and the second internal setup process I02), An interval time is set between the mounting process Pr of the circuit board 2 to be produced and the internal setup process I of the circuit board 2 to be produced next (for example, between the first mounting process Pr01 and the second internal setup process I02). is set. Note that an interval time is provided between other processes (for example, between the picking process Pi and the external setup process O relating to the production of the same circuit board 2, or between the mounting process Pr and the internal setup process I). may

Next, the process of changing the production process chart when the production plan is changed will be explained. When producing the circuit board 2, each process is executed according to a production process chart prepared in advance. However, the production plan may change during production of the circuit board 2 . When the production plan is changed, for example, when a problem occurs during the production of the circuit boards 2 and the processing execution time becomes longer than planned, the number of circuit boards 2 to be produced may be increased or decreased. For example, when the execution time of the mounting process is changed, or when another circuit board 2 is to be produced first. If the production plan is changed and the end time of the changed process is later than planned, it may not be possible to start the process as scheduled after the time of the change. Also, if the end time of the changed process is earlier than planned, the interval time until the process after the time of the change becomes longer, which may be wasteful. Therefore, when the production plan is changed, the production control device 50 generates a production process chart (hereinafter also referred to as a changed production process chart) in which the production plan after the change is changed.

As shown in FIG. 5, first, the computing unit 52 acquires information about changes in the production plan (S12). When the production plan is changed, the worker inputs information regarding the change of the production plan from the input unit 40. FIG. In this embodiment, it is assumed that the execution time of the first mounting process Pr01 shown in FIG. 4 is longer than planned. The calculation unit 52 acquires information regarding changes in the production plan input from the input unit 40 .

Next, the modified production process chart generating section 56 generates a plurality of modified production process charts by modifying the production process chart stored in the production process chart storage section 54 based on the information regarding the change in the production plan acquired in step S12. (S14). That is, the modified production process chart generating unit 56 acquires the production process chart from the production process chart storage unit 54, and generates the changed production process chart by changing the production plan after the production plan is changed in the acquired production process chart. Generate multiple patterns.

The patterns of the changed production process chart to be generated are the first change pattern that maintains the production plan after the production plan is changed as much as possible, and the second change pattern that changes the production plan after the production plan is changed. 2 change patterns are included. More specifically, the first change pattern means that when the execution plan of the mounting process (first mounting process) to be changed in the production plan is changed, the second mounting process is executed after the first mounting process. Implementation plans for the mounting process are intended to be maintained. For example, the first change pattern can be such that the interval time set between each process after change is not changed. In this case, when the process for which the production plan is to be changed is changed for a predetermined period of time, each subsequent process is also changed for a predetermined period of time. Alternatively, the first change pattern can reduce the degree of change in the interval time set between each process after the change. For example, when there are a plurality of interval times set between each process after change, the pattern can be such that the number of changed interval times is reduced. For example, if there are three interval times set between each process after change, only one interval time may be changed. Alternatively, when there are a plurality of interval times set between each process after the change, the number of changed interval times may be large, but the total change time of the interval times may be shortened. For example, if there are three interval times set between each process after change, each of the three interval times is changed, but the total time of the changed times is changed to be shorter. good. In the second change pattern, the implementation plan for the second mounting process is also changed according to the change in the implementation plan for the first mounting process. For example, when a change that extends the first mounting process is input, the second change pattern is such that the end time of the second mounting process after the change is the end time of the second mounting process before the change. A change pattern can be used to reduce the difference between . Alternatively, when a change that shortens the first mounting process is input, the second change pattern may be a change pattern that makes the end time of the second mounting process after the change as early as possible. can. Therefore, in the first change pattern, the production plan after the production plan is changed is not changed or, even if it is changed, the degree of change is reduced. The degree of change in the production plan increases.

In this embodiment, when generating a modified production process chart, the production process chart is changed by changing the length of the interval time after the production plan is changed. For each of the picking process Pi, the external setup process O, the internal setup process I, and the mounting process Pr, the length of execution time is changed because the operator is working and the mounter 10 is operating. It is difficult to On the other hand, the length of the interval time can be changed in many cases because there is no work by the operator and no operation of the mounter 10 . Therefore, when changing the production process chart, the length of the interval time is adjusted.

6(a) and 6(b) show an example of the modified production process chart. As shown in FIG. 6A, in the first change pattern, when the execution time of the first mounting process Pr01 is changed, the process after the first mounting process Pr01 (in the process relating to the second type of circuit board 2, For the processes after the second internal setup process I02 (lower stage) and the process for the circuit board 2 of the third type (upper stage)), the execution time and interval time of each process are collectively moved as they are. For example, if the execution time of the first implementation process Pr01 is lengthened by 15 minutes, the execution times of all subsequent processes are shifted back by 15 minutes. That is, in the example shown in FIG. 6A, the length of the interval time is not changed in the first change pattern. However, if it is difficult to generate a modified production process chart without changing the length of the interval time, it is possible to change the number of interval times and the total time after the first mounting process Pr01 to be changed. The interval time may be changed so as to be as small as possible.

On the other hand, as shown in FIG. 6B, in the second change pattern, when the execution time of the first mounting process Pr01 is changed, the processes after the first mounting process Pr01 are changed. Specifically, the length of each interval set after the first implementation process Pr01 to be changed is changed. In the example shown in FIG. 6B, the interval time (upper part) between the second external setup process O02 and the third picking process Pi03 and the interval time between the first mounting process Pr01 and the second internal setup process I02 The time and the length of the interval time (lower row) between the second mounting process Pr02 and the third internal setup process I03 are shortened. In this embodiment, the modified production process chart generator 56 generates two modified production process charts, the first change pattern and the second change pattern. may be generated.

As shown in FIG. 5, when a plurality of modified production process charts are generated, the computing unit 52 displays the generated multiple modified production process charts on the display unit 42 (S16). This presents the worker with a production process that can be executed after the production plan is changed. The worker can select one from a plurality of modified production process charts according to the situation at that time. In the first change pattern, the degree of change from the original production process chart is small, and the length of the interval time is almost the same as that of the original production process chart (see FIG. 6(a)). If the interval time is maintained, the worker can start work with time to spare. On the other hand, in the second change pattern, the interval time is greatly changed (see FIG. 6(b)). Therefore, there is almost no time left for the worker to start work. For example, if the subsequent production plan is not executed on the same day (for example, executed the next day), there is no need to change the subsequent production flow chart. In this case, since there is no need to select the second change pattern, the operator selects the first change pattern. On the other hand, if the subsequent production plan needs to be executed on the same day, selecting the first change pattern will delay the end of the day's work. In this case, the extension of working time can be avoided by selecting the second change pattern. In this way, by displaying a plurality of patterns of modified production process charts, the operator can select a pattern of modified production process charts according to the situation, and can flexibly respond to changes in the production plan. can be done.

Although specific examples of the technology disclosed in this specification have been described above in detail, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. In addition, the technical elements described in this specification or in the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the techniques exemplified in this specification or drawings achieve multiple purposes at the same time, and achieving one of them has technical utility in itself.

2: Circuit Board 4: Electronic Component 10: Component Mounting Machine 12: Component Feeder 14: Feeder Holding Unit 16: Mounting Head 18: Head Moving Device 20: Board Conveyor 24: Touch Panel 26: Control Device 40: Input Unit 42: Display Unit 50: Production control device 52: Calculation unit 54: Production process chart storage unit 56: Modified production process chart generation unit

Claims (4)

A production management device for managing production in a component mounter that mounts electronic components on a substrate,
a storage unit that stores a production process chart showing an execution plan for a mounting process for mounting the electronic component on each of the boards based on production plans for a plurality of types of boards;
an input unit for inputting changes in the production plan;
When the change of the production plan is input, a plurality of patterns of the changed production process chart corresponding to the production plan after the change of the production plan based on the change of the production plan and the production process chart. A change production process chart generation unit that can be generated by selecting from among
a display unit that displays the changed production process chart,
The plurality of patterns change the execution plan of the first mounting process that is subject to change in the production plan, and maintain the execution plan of the second mounting process that is executed after the first mounting process. 1 change pattern, and a second change pattern for changing the implementation plan of the second mounting process according to the change of the implementation plan of the first mounting process. A first interval time is set between mounting processes for each of the plurality of types of substrates in the production process chart,
2. The production management apparatus according to claim 1, wherein the length of said first interval time is adjusted in said second change pattern. The production process chart includes, for each of a plurality of types of boards, an external set-up time, which is an execution time of an external set-up process for executing preparation work outside the component mounter in order to produce the type of board, and the component mounter. Between the internal setup time, which is the execution time of the internal setup process for executing the preparation work for, the production time for executing the mounting process, and any one of the external setup process, the internal setup process, and the mounting process 3. The production control device according to claim 1, which sets a provided second interval time. When a change related to the production time for at least one of the external setup process, the internal setup process, and the mounting process for a specific type board is input from the input unit, the modified production process chart generation unit 4. The production management device according to claim 3, wherein the length of said second interval time is changed for a type of board to be produced after that, including the board of 1, to generate said plurality of patterns of changed production process charts.

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