JP2024005625A - Splicing work assignment device, component mounting system, splicing work assignment method, and splicing work assignment program - Google Patents

Abstract

To prevent a splicing work from being delayed in a situation where components are frequently out of stock or other works are concentrated.SOLUTION: A production management PC for a splicing work which assigns a splicing work of component tapes to an operator of a surface mounting machine includes a storage unit in which information for predicting component run-out times is stored, and a control unit. The control unit executes prediction processing for predicting, based on the information, a plurality of component tapes that will run out of components within a certain time, and assignment processing of assigning the splicing work for each of the component tape predicted by the prediction processing to one operator so as to avoid duplication of a plurality of works at the same time. In the assignment processing, the splicing work is assigned in the order of component tapes for which predicted component out-of-stock times are later such that the splicing work is started earlier on component tapes with earlier predicted component out-of-stock times.SELECTED DRAWING: Figure 5

Description

The technology disclosed in this specification includes a splicing work assignment device, a component mounting system, and a splicing work assignment device that allocates the splicing work of a component tape to an operator of a surface mounter that mounts a component supplied by a component tape holding the component onto a board. The present invention relates to a splicing work assignment method and a splicing work assignment program.

Conventionally, in surface mount machines that mount components onto a board that are supplied by a component tape that holds the component, when the number of components remaining on the component tape decreases, the same type of component as the component tape is held at the rear end of the component tape. Splicing work is being carried out to connect the ends of the tapes of different parts.

Conventionally, a work schedule for an operator performing splicing work has been created (for example, see Patent Document 1). Specifically, the work management device described in Patent Document 1 predicts the work that will occur during a predetermined period based on board production information, and determines the scheduled start time for starting the predicted work based on the work proficiency level. It has been decided. This document describes parts supply (splicing) as an example of the work.
The document also states that for each task, 10 minutes before the scheduled start time of the task (an example of a predetermined time before), a work instruction is sent to the mobile terminal of the worker assigned to that task. Are listed.

JP2020-35808A (Paragraph 0063)

If parts run out frequently or if other work is concentrated, the splicing work may not be completed in time and the mounting operation of the surface mounter may stop. In the work management device described in Patent Document 1, this has not been sufficiently studied.
This specification discloses a technique that prevents splicing work from being completed in time in situations where parts are frequently out of stock or other work is concentrated.

An allocation device that allocates splicing work of a component tape to an operator of a surface mounter that mounts components supplied by a component tape holding the components onto a board, the device having information for predicting the time when the component tape will run out of the component. The control unit includes a storage unit in which parts are stored, and a control unit, and the control unit performs a prediction process of predicting a plurality of component tapes that will run out of parts within a certain time based on the information; An allocation process is performed in which the predicted splicing work for each part tape is assigned to one operator so that multiple jobs do not overlap at the same time. Splicing work is assigned in the order of component tapes with later predicted component end times so that splicing work is started earlier.

According to the above configuration, it is possible to prevent splicing work from not being completed in time in situations where parts are frequently out of stock or other work is concentrated.

Schematic diagram of a component mounting system according to Embodiment 1 Top view of surface mount machine Perspective view of component tape Block diagram showing the electrical configuration of the production management PC Schematic diagram to explain the allocation of splicing tasks Schematic diagram to explain the allocation of splicing tasks Flowchart of splicing task allocation process Schematic diagram showing an example of board data according to Embodiment 2 Schematic diagram showing an example of board data Flowchart of splicing task allocation process Flowchart of splicing task allocation process Flowchart of splicing task allocation process Schematic diagram showing a production plan according to Embodiment 3 Schematic diagram showing production plan Schematic diagram showing the issuance of an alert for out-of-parts according to a comparative example

(Summary of this embodiment)
(1) The splicing work assignment device according to the embodiment is an assignment device that assigns splicing work of a component tape to an operator of a surface mount machine that mounts components supplied by a component tape holding components onto a board. , a storage section storing information for predicting a component outage time of the component tape, and a control section, and the control section is configured to predict a plurality of parts out of the component tape within a certain period of time based on the information. a prediction process for predicting the number of parts tapes, and an assignment process for allocating the splicing work for each part tape predicted in the prediction process to one operator so that multiple jobs do not overlap at the same time, and In the allocation process, splicing work is assigned in the order of component tapes with later predicted component end times, such that splicing work is started earlier on component tapes with earlier predicted component end times.

With reference to a comparative example shown in FIG. 14, conventional issuance of an alert for out-of-parts will be described. In FIG. 14, time T3 is the estimated time when the component tape of component Ea (hereinafter simply referred to as component Ea) is expected to run out, and time T4 is the predicted time when the component tape of component Eb (hereinafter simply referred to as component Eb) is expected to be out of stock. . In FIG. 14, other work time is time allocated to work other than splicing work. In the example shown in FIG. 14, parts Ea and Eb are out of stock during other work hours.
In the comparative example, for each part, a part-out alert is simply issued a predetermined time before the predicted part-out time for that part. That is, in the comparative example, when issuing a part-out alert for a certain part, the work time of splicing work for other parts is not taken into account.

Specifically, in the comparative example, the out-of-part alert for the part Ea is issued at time T1, which is a predetermined time before the predicted out-of-part time for the part Ea. The time point T1 is determined without considering the splicing work time of the part Eb. Then, at time T2, which is a predetermined time before the predicted out-of-part time of component Eb, an alert of out-of-part of part Eb is issued. The out-of-part alert for component Eb is also issued without considering the splicing work time for component Ea. Therefore, after an alert that component Ea is out of stock is issued, an alert that component Eb is out of stock is issued at relatively short time intervals.
When an alert for the part Ea is issued at time T1, the operator performs a splicing operation for the part Ea. In the example shown in FIG. 14, other work is assigned immediately after the splicing work of the part Ea, so the operator cannot perform the splicing work of the part Eb before doing the other work. For this reason, the splicing work of component Eb is not completed in time, and the mounting operation of the surface mounter is stopped.

According to the allocation device described in (1) above, the splicing work of the component tape predicted by the prediction process is allocated to one operator so that a plurality of splicing jobs do not overlap at the same time. In that case, according to the allocation device described in (1) above, the component tapes with the later predicted component end times are ordered so that the splicing work is started earlier on the component tapes with the earlier predicted component end times. Allocate splicing tasks with . In this way, there is a high possibility that all the component tapes can be allocated so that the splicing work can be completed before the component runs out. Therefore, it is possible to prevent the splicing work from not being completed in time in situations where parts are frequently out of stock or other work is concentrated. Thereby, it is possible to suppress the suspension of the mounting operation due to component shortage.

(2) The control unit may execute an issuing process for issuing an out-of-parts alert a predetermined time before the scheduled start time of the assigned splicing work.

According to the allocation device described in (2) above, splicing tasks are allocated so that multiple tasks do not overlap at the same time. For this reason, the work time for splicing work is taken into consideration when allocated. Therefore, by issuing an alert a predetermined time before the scheduled start time of the splicing operation, the alert can be issued in consideration of the working time of the splicing operation.

(3) In the allocation process, if a splicing job that cannot be assigned to the operator occurs, the control unit may allocate the unallocable splicing job to another operator.

In situations where component shortages occur frequently or other operations are concentrated, it may not be possible to allocate splicing tasks for all component tapes for which component shortages are expected to be assigned to one operator.
According to the allocation device described in (3) above, when a splicing task that cannot be assigned to one operator occurs, the unassignable splicing task is assigned to another operator, resulting in frequent parts shortages and other problems. It is possible to prevent the splicing work from being completed in time in situations where the work is concentrated.

(4) The surface mounter mounts components on a board based on board data indicating a component to be mounted on the board and a component tape for supplying the component, and the control unit is configured to mount the component on the board in the allocation process. When a splicing operation that cannot be assigned to an operator occurs, for at least one of the component tapes to which no splicing operation can be assigned, a component of the same type as the component tape is retained in place of the component tape. A first creation process is executed to create board data for mounting a component supplied by another component tape, and when the number of components remaining on the at least one component tape becomes a predetermined number or less, the first creation process is executed. Assuming that the board data created in the creation process is temporarily switched and components are mounted on the board, the allocation process is re-executed, and as a result of re-executing the allocation process, it is possible to allocate the splicing work for all component tapes. If the number of components remaining on the at least one component tape is less than or equal to a predetermined number, the production plan of the surface mounter is temporarily switched to the board data created in the first creation process. You may change your plan.

If the number of remaining components on a component tape to which splicing work cannot be assigned is less than a predetermined number, switching to the board data created in the first creation process will cause the tape to be replaced by another component tape that holds the same type of components. Since the supply of parts is continued, the work deadline for splicing work on part tapes to which splicing work cannot be assigned can be delayed. The work deadline time is the time at which the mounting operation of the surface mounter will stop if the splicing work is not completed by that time. By delaying the work deadline time, multiple splicing jobs can be distributed, so all splicing jobs can be assigned in more situations. Therefore, it is possible to prevent the splicing work from not being completed in time in situations where parts are frequently out of stock or other work is concentrated.

(5) If a splicing task that cannot be assigned to the operator occurs in the assignment process, the control unit creates a production plan that staggers the production start time of a plurality of production lines each having the surface mounter. Assuming that boards will be produced according to the production plan created in the second creation process, the allocation process is re-executed, and as a result of re-executing the allocation process, all component tapes are If the splicing work can be assigned, the production plan for the surface mounter may be changed to the production plan created in the second creation process.

According to the allocation device described in (5) above, multiple splicing jobs can be distributed by staggering the production start times of multiple production lines, making it possible to allocate all splicing jobs in more situations. Become. Therefore, it is possible to prevent the splicing work from not being completed in time in situations where parts are frequently out of stock or other work is concentrated.

(6) When a splicing operation that cannot be assigned to the operator occurs in the assignment process, the control unit executes a third creation process to create a production plan in which the production order of the substrates is changed, and Assuming that the board will be produced according to the production plan created in step 3, re-execute the allocation process, and as a result of re-executing the allocation process, if splicing work for all component tapes can be allocated, The production plan for the surface mounter may be changed to the production plan created in the third creation process.

According to the allocation device described in (6) above, multiple splicing operations can be distributed by changing the production order of the substrates, so all splicing operations can be allocated in more situations. Therefore, it is possible to prevent the splicing work from not being completed in time in situations where parts are frequently out of stock or other work is concentrated.

(7) A storage unit is provided, and the control unit stores the actual working time of the splicing work for each operator in the storage unit, and determines the predicted working time of the splicing work based on the actual working time stored for each operator. You can.

According to the allocation device described in (7) above, since the predicted work time for splicing work is determined for each operator based on the actual work time, it is possible to accommodate changes in operator proficiency and individual differences.

[Details of embodiments of the present disclosure]
Embodiments of the present disclosure will be described below. The present disclosure is not limited to these examples, but is indicated by the claims, and is intended to include all changes within the meaning and scope equivalent to the claims.
Embodiments of the present disclosure can be realized in various forms such as an apparatus, a method, a computer program for realizing the functions of these apparatuses or methods, and a recording medium on which the computer program is recorded.

<Embodiment 1>
Embodiment 1 will be described based on FIGS. 1 to 7. In the following description, reference numerals in the drawings may be omitted for the same components except for some.

(1) Component Mounting System A component mounting system 1 according to the first embodiment will be described with reference to FIG. 1. The component mounting system 1 is a system for mounting components such as electronic components on a board on which a circuit pattern is printed.
The component mounting system 1 includes one or more production lines L (L1, L2, L3), a production management PC (personal computer) 2, and one or more operator terminals 3. The production management PC2 is an example of an allocation device and a computer. These devices are communicably connected via a communication network 4. Operator terminal 3 is wirelessly connected to communication network 4 .

Operators 5 (5A, 5B) are workers who perform work that occurs on the production line L (splicing work, error handling, etc.). Operator 5 carries operator terminal 3. In the first embodiment, it is assumed that operator 5A (an example of one operator) is in charge of work on production line L1, and operator 5B (an example of another operator) is in charge of work on production line L2.

(1-1) Production line Each production line L is equipped with one or more surface mounting machines 6. In addition to the surface mounting machine 6, the production line L includes other equipment that performs work on the substrate P (loader, screen printer, print inspection machine, dispenser, post-mounting visual inspection machine, reflow machine, post-curing visual inspection machine, unloader). etc.), but other devices are omitted in Figure 1.

The surface mounter 6 will be described with reference to FIG. 2. The surface mounter 6 is a device that mounts the component E on the board P. The surface mounting machine 6 includes a pedestal 10, a conveyor 11, four component supply devices 12, a head unit 13, a head moving section 14, a control section, and an operation section.
The pedestal 10 has a rectangular shape in plan view and has a flat top surface. An area A indicated by a two-dot broken line in FIG. 2 is a working position (hereinafter referred to as working position A) where the board P is fixed when the component E is mounted on the board P. A backup device (not shown) for fixing the substrate P transported to the work position A is arranged below the work position A. The backup device has a plurality of backup pins that support the substrate P from below.

The conveyor 11 is a device that conveys the substrate P. The conveyor 11 includes a pair of conveyor belts 15 (front conveyor belt 15A and rear conveyor belt 15B) that circulate in the X direction, a plurality of rollers around which the conveyor belt 15 is wound, and a conveyor drive motor that drives the conveyor belt 15. It is equipped with such things as The conveyor 11 transports the board P carried in from the upstream side to the work position A, and transports the board P on which the component E is mounted at the work position A to the downstream side.

The component supply devices 12 are arranged at four locations, two on each side of the surface mounter 6 in the Y direction, along the X direction. A plurality of tape feeders 16 are attached to the component supply device 12 so as to be aligned side by side in the X direction. Each tape feeder 16 is equipped with a reel wound with a component tape 17 (see FIG. 3) holding a component E, and an electric feeding device that pulls out the component tape 17 from the reel. Components E are supplied one by one from the component supply position provided at the side end. A description of the component tape 17 will be given later.

The head unit 13 includes a plurality of mounting heads 18 that pick up and release components E, a Z-axis servo motor that raises and lowers these mounting heads 18 individually, and an R-axis servo that rotates these mounting heads 18 around an axis all at once. Equipped with a motor. The head unit 13 according to the first embodiment is of a so-called in-line type, and a plurality of mounting heads 18 are provided side by side in the X direction. The head unit 13 may be a so-called rotary head in which a plurality of mounting heads 18 are arranged on the circumference.

The head moving section 14 is a mechanism that moves the head unit 13 in the X direction and the Y direction within a predetermined movable range. The head moving unit 14 includes a beam 19 that supports the head unit 13 so that it can reciprocate in the X direction, a pair of Y-axis guide rails 20 that supports the beam 19 so that it can reciprocate in the Y direction, and a beam 19 that supports the head unit 13 so that it can reciprocate in the Y direction. It is equipped with an X-axis servo motor that reciprocates the beam 19 in the Y direction, a Y-axis servo motor that reciprocates the beam 19 in the Y direction, and the like.

The component tape 17 will be explained with reference to FIG. The component tape 17 is a tape holding a component E to be mounted on the board P. The component tape 17 includes a carrier tape 17B in which a plurality of accommodation recesses 17A are provided at regular intervals in the longitudinal direction, a component E accommodated in each accommodation recess 17A, and a release tape affixed to the upper surface of the carrier tape 17B. It has 17C. On one side of the component tape 17 in the width direction, feed holes 17D into which teeth of a sprocket included in the delivery device of the component supply device 12 are inserted are provided at equal intervals along the length direction. There are a plurality of types of parts E, and one part tape 17 stores parts E of the same type.

(1-2) Production control PC
The production management PC 2 will be explained with reference to FIG. The production management PC2 is a computer that centrally manages the production of the substrates P. The production management PC 2 executes processes such as formulating and monitoring a production plan for the board P, and formulating and monitoring a work plan for the operator 5.
The production management PC 2 includes a control section 30, a storage section 31, a communication section 32, a display section 33, and an operation section 34. The control unit 30 includes a CPU 30A and a RAM 30B. The control section 30 controls each section of the production management PC 2 by executing a program stored in the storage section 31.

The storage unit 31 is a storage device having a rewritable nonvolatile storage medium such as a hard disk. The storage unit 31 stores various programs and data executed by the control unit 30.
The various data include a production plan for each production line L, board data to be described later, estimated production time per board, information regarding the component tape 17 (number of parts remaining, etc.), predicted work time for splicing work, and the like. The production plan includes information such as the model of the board P to be produced, board data used for production, the production order of each model, and the production start time. The predicted work time for splicing work is stored for each operator 5. The predicted working time common to all operators 5 may be stored instead of the predicted working time for each operator 5.

The communication unit 32 is a communication circuit for connecting the production management PC 2 to the communication network 4. The display section 33 includes a display device such as a liquid crystal display, a drive circuit for driving the display device, and the like. The operation unit 34 is a keyboard, a mouse, a touch panel, etc.

(1-3) Operator Terminal The operator terminal 3 will be explained with reference to FIG. The operator terminal 3 is a computer equipped with a display unit that displays information, and specifically is a tablet computer, a smartphone, or the like. The operator terminal 3 may be a portable PC or a specially designed terminal.

The production management PC 2 creates a work plan for splicing work and other work for each operator 5, and sends the created work plan to the operator terminal 3. The production management PC 2 issues an out-of-parts alert to the operator 5 via the operator terminal 3 at a predetermined time before the scheduled start time of the splicing operation. The method for issuing an alert can be determined as appropriate. For example, a message indicating that a part is about to run out may be issued by displaying it on the operator terminal 3, or may be issued by voice. The message may be issued by emitting a predetermined alert sound together with the message.

(2) Splicing work assignment processing Splicing work assignment processing according to the first embodiment will be described with reference to FIG. The splicing work assignment process is executed as a simulation on the computer (production control PC 2) before starting production of the substrate P. The control unit 30 virtually changes the current time on the production management PC 2 at predetermined time intervals (for example, every 30 minutes), and executes splicing work assignment processing every time the current time changes. This will be explained in detail below.

The control unit 30 operates for a certain period of time (starting from the current time (virtual current time on the computer)) based on information for predicting the component run-out time of each component tape 17 attached to the surface mounter 6. For example, the parts tape 17 that will run out of parts within 30 minutes is predicted (an example of prediction processing). The information for predicting the component run-out time includes, for example, the production plan for the board P, board data to be described later, estimated production time per board, information regarding the component tape 17, and the like.

Then, the control unit 30 assigns the splicing work of the component tape 17 that is predicted to be out of parts within a certain period of time to one operator 5A so that multiple tasks do not overlap at the same time. In this allocation, the control unit 30 controls component tapes 17 with later predicted component out-of-time times so that splicing work is started earlier for component tapes 17 with earlier predicted component out-of-out times (an example of predicted component out-of-out times). Allocate splicing tasks in order.

Specifically, in the example shown in FIG. 5, parts Ea and Eb become out of stock within a certain period of time. Among these parts E, the part E with the latest predicted part-out time is the part Eb. For this reason, the control unit 30 first assigns the splicing work for the component Eb. In assigning the splicing work, the control unit 30 reads out the predicted work time of the operator 5A to whom the splicing work is assigned from the storage unit 31, and secures the read predicted work time as the work time of the splicing work.

When allocating the splicing work, the control unit 30 allocates the splicing work so that the splicing work is completed before the predicted component outage time. For example, in the example shown in FIG. 5, the predicted component outage time of component Eb is during other work time. Therefore, the control unit 30 allocates time so that the splicing work of the component Eb is completed before the other work time.
Then, the control unit 30 assigns the splicing work of the part Ea, which is the part E with the second latest predicted part-out time after the part Eb, before the splicing work of the part Eb. As a result, the splicing work is allocated to the component tape 17 with the earlier predicted component outage time to start earlier.

FIG. 6 is another example of the first embodiment. In the example shown in FIG. 6, the predicted parts-out times are later in the order of parts Ec, Eb, and Ea. Therefore, the splicing work for the part Ec is assigned first, the splicing work for the part Eb is assigned before that, and the splicing work for the part Ea is assigned before that.
In the example shown in FIG. 6, as a result of assigning splicing work in order from component E with the latest predicted component outage time, the scheduled start time of the splicing work for component Ea is earlier than the current time (virtual current time on the computer). ing. If the scheduled start time is before the current time, this is not possible because the splicing operation would have to be started back in time. Therefore, if there is a splicing job whose scheduled start time is earlier than the current time, this means that there is a splicing job that cannot be assigned to one operator 5A.

When a splicing task that cannot be assigned to one operator 5A (in this case, a splicing task for part Ea) occurs, the control unit 30 determines whether or not the unassignable splicing task can be assigned to another operator 5B. to decide. If possible, the control unit 30 allocates the splicing work that cannot be allocated to one operator 5A to another operator 5B. In the example shown in FIG. 6, the splicing work of part Ea is assigned to another operator 5B.

The splicing work assigned to the other operator 5B is not limited to the splicing work of the part Ea, but may be the splicing work of the part Eb or the part Ec.

(3) Splicing work assignment processing The flow of splicing work assignment processing will be described with reference to FIG.
In S101, the control unit 30 predicts which component tapes 17 will run out of components within a certain time based on information for predicting the component out-of-date time of each component tape 17 attached to the surface mounter 6. .
In S102, the control unit 30 assigns the splicing work of the component tape 17 predicted in S101 to one operator 5A.

In S103, the control unit 30 determines whether the splicing work can be assigned to one operator 5A (in other words, whether there is any splicing work whose scheduled start time is earlier than the current time). If the control unit 30 cannot allocate it, the process proceeds to S104, and if it can allocate it, it ends the process.
In S104, the control unit 30 determines whether a splicing task that cannot be assigned to one operator 5A can be assigned to another operator 5B by referring to the work plan of the other operator 5B. The control unit 30 proceeds to S105 if allocation is possible, and ends the process if allocation is not possible.
In S105, the control unit 30 assigns the splicing work that cannot be assigned to one operator 5A to another operator 5B.

(4) Effects of Embodiment According to the production management PC 2 according to the first embodiment, the splicing work of the component tape 17 predicted by the prediction process is assigned to one operator 5A so that multiple splicing jobs do not overlap at the same time. . In this case, according to the production management PC 2, the splicing work is assigned in the order of component tapes 17 with later predicted parts out times such that the splicing work is started earlier on the component tapes 17 with earlier predicted parts out times. In this way, there is a high possibility that all the component tapes 17 can be allocated so that the splicing work can be completed before the component runs out. Therefore, it is possible to prevent the splicing work from not being completed in time in situations where parts are frequently out of stock or other work is concentrated. Thereby, it is possible to suppress the suspension of the mounting operation due to component shortage.

According to the production management PC 2, an alert can be issued in consideration of the working time of the splicing work.

According to the production control PC 2, if a splicing task that cannot be assigned to one operator 5A occurs, the unassignable splicing task will be assigned to another operator 5B, resulting in frequent parts shortages and other tasks being concentrated. It is possible to prevent splicing work from being delayed in time in situations where

<Embodiment 2>
Embodiment 2 will be described with reference to FIGS. 8 to 11.
In the first embodiment described above, if it is determined in S104 that it cannot be assigned to another operator 5B (in other words, if a splicing job that cannot be assigned to another operator 5B occurs), the process ends.
On the other hand, if the control unit 30 according to the second embodiment determines that the splicing work cannot be assigned to another operator 5B in S104, the control unit 30 determines that splicing work cannot be assigned to at least one component tape 17 among the component tapes 17 to which the splicing operation cannot be assigned. In place of the component tape 17, board data for mounting a component E supplied by another component tape 17 holding the same type of component E as the component tape 17 is created (an example of a first creation process).

The substrate data will be described with reference to FIGS. 8A and 8B. The board data is data indicating the component E to be mounted on the board P and the component tape 17 that supplies the component E. Board data is created for each model of board P to be produced. The surface mounting machine 6 mounts the component E on the board P based on board data according to the model to be produced.

The board data shown in FIG. 8A includes the component name of the component to be mounted on the board P, mounting coordinates, the head number of the mounting head 18 used for mounting the component E, the feeder number of the tape feeder 16 that supplies the component E, etc. . Since the component tape 17 is set in the tape feeder 16, the component tape 17 is identified by the feeder number. That is, in the example shown in FIG. 8A, the component tape 17 that supplies the component E is indicated by the feeder number.
In the example shown in FIG. 8A, three components Eb are mounted on one board P. Since the three parts Eb have different feeder numbers, they are supplied by different part tapes 17. For this reason, at least three component tapes 17 for supplying components Eb are set in the surface mounter 6.

FIG. 8B is an example of board data created by the first creation process. For example, suppose that the splicing work for the component tape 17 of the component Eb in the second row could not be assigned. In this case, the control unit 30 sets the feeder number of the component Eb on the second row to the same number as the feeder number of the tape feeder 16 that supplies the component Eb on the fourth (or fifth) row. As a result, the component tape 17 (hereinafter referred to as alternative component tape 17) that supplies the component Eb in the fourth row continues to supply the component Eb in the second row. In this way, the splicing operation of the component tape 17 of the component Eb in the second row can be performed before the substitute component tape 17 runs out of parts, so that the work deadline of the splicing operation can be delayed.

When the control unit 30 creates the board data shown in FIG. 8B, when the number of remaining components on the component tape 17 of the component Eb in the second row becomes a predetermined number or less (for example, when it becomes 0), the controller 30 creates the board data shown in FIG. 8B. Assuming that the component E is mounted on the board P by temporarily switching to the board data, the assignment process is re-executed. As a result of re-executing the allocation process, if the splicing work for all the component tapes 17 can be assigned, the control unit 30 changes the production plan of the surface mounter 6 to the component tape 17 of the component Eb on the second line. When the number of remaining parts becomes less than a predetermined number, the production plan is changed to temporarily switch to the board data shown in FIG. 8B, and production of the board P is started.

After switching to the board data shown in FIG. 8B, the control unit 30 switches back to the original board data shown in FIG. 8A when the splicing work of the component tape 17 of the component Eb in the second row is performed. That is, the board data shown in FIG. 8B is used temporarily until the splicing operation of the component tape 17 of the component Eb in the second row is performed.

(1) Splicing work assignment processing The flow of splicing work assignment processing according to the second embodiment will be described with reference to FIGS. 9 to 11. If the control unit 30 according to the second embodiment determines that allocation is impossible in S104, the process proceeds to S106.

In S106, the control unit 30 selects one of the component tapes 17 from among the component tapes 17 determined to be unallocable to another operator 5B in S104 (in other words, component tapes 17 to which splicing work cannot be assigned).
In S107, the control unit 30 determines whether or not an alternative component tape 17 is attached to the surface mounter 6 for the selected component tape 17. The control unit 30 proceeds to S108 if it is not attached, and proceeds to S109 if it is attached.

In S108, the control unit 30 determines whether the substitute component tape 17 can be attached. The control unit 30 proceeds to S109 if the attachment is possible, and proceeds to S116 if the attachment is not possible.
In S109, the control unit 30 assumes that the substitute component tape 17 has been attached. This is just a hypothesis at this point, and it cannot actually be installed yet.

In S110, the control unit 30 selects one alternative component tape 17 for the component tape 17 selected in S106.
In S111, the control unit 30 creates board data for mounting the component E supplied by the substitute component tape 17 selected in S110.
In S112, the control unit 30 assumes that if the number of remaining components on the component tape 17 selected in S106 becomes less than a predetermined number, the controller 30 will temporarily switch to the board data created in S111 and mount the component E on the board P. and rerun the allocation process.

In S113, as a result of re-executing the allocation process in S112, if the control unit 30 is able to allocate the splicing work for all the component tapes 17, the process proceeds to S114; otherwise, the process proceeds to S115.
In S114, the control unit 30 changes the production plan to temporarily switch to the board data created in S111 when the number of remaining parts on the component tape 17 selected in S106 becomes a predetermined number or less. Here, if the substitute component tape 17 selected in S106 is the substitute component tape 17 assumed to have been attached in S109, it has not actually been attached yet, so the control unit 30 installs the new substitute component tape 17. Assign the work to operator 5.

In S115, the control unit 30 determines whether all the alternative parts tapes 17 have been selected. If there are any alternative parts tapes 17 that have not been selected, the process returns to S110, and if all the alternative parts tapes 17 have been selected, Proceed to S116.
In S116, the control unit 30 determines whether or not all component tapes 17 determined to be unallocable to other operators 5B have been selected. If there are component tapes 17 that have not been selected, the process returns to S106 and all component tapes 17 are selected. If tape 17 is selected, the process ends.

(2) Effects of Embodiment According to the production management PC 2 according to the second embodiment, if a splicing task that cannot be assigned to the operator 5 occurs, the board data is temporarily switched to the one that uses the substitute component tape 17, so the splicing task is The deadline for splicing the component tape 17 that cannot be allocated can be delayed. By delaying the work deadline time, multiple splicing jobs can be distributed, so all splicing jobs can be assigned in more situations. Therefore, it is possible to prevent the splicing work from not being completed in time in situations where parts are frequently out of stock or other work is concentrated.

<Embodiment 3>
Embodiment 3 will be explained with reference to FIGS. 12 and 13.
The component mounting system 1 according to the third embodiment includes a plurality of (here, three) production lines L. Each production line L has one or more surface mounting machines 6. In the third embodiment, it is assumed that one operator 5A is in charge of work on three production lines L.

A production plan for the substrate P will be described with reference to FIG. 12. In the example shown in FIG. 12, models A and B are produced on the production line L1. The setup change between the production time of model A and the production time of model B involves changing the arrangement of backup pins of a backup device (not shown) in accordance with model B after switching. In the example shown in FIG. 12, models C and D are produced on the production line L2, and models E, F, and G are produced on the production line L3. Setup is also performed on the production lines L2 and L3 during the changeover of models. FIG. 12 shows a case where a splicing task that cannot be assigned to another operator 5B occurs while production line L1 is producing substrates P of model A and production line L2 is producing substrates P of model C. It shows.

In the first embodiment described above, if it is determined in S104 that it cannot be assigned to another operator 5B (in other words, if a splicing job that cannot be assigned to another operator 5B occurs), the process ends.
On the other hand, as shown in FIG. 13, when a splicing task that cannot be assigned to another operator 5B occurs, the control unit 30 according to the third embodiment shifts the production start times of the plurality of production lines L. A production plan is created (an example of the second creation process). Specifically, the control unit 30 selects any one production line L and creates a production plan in which the production start time of the selected production line L is delayed within a range that does not miss the delivery date. FIG. 13 shows a case where the production start time of production line L2 is delayed.

The control unit 30 re-executes the allocation process assuming that the board P will be produced according to the created production plan, and if all the splicing work can be allocated as a result, it changes to the newly created production plan. Start production of substrate P.
When the control unit 30 is unable to allocate all the splicing jobs, it selects another production line L and creates a production plan in which the production start time of the selected production line L is delayed. The processing after creating the production plan is the same, so the explanation will be omitted.

According to the production management PC 2 according to the third embodiment, multiple splicing jobs can be distributed by shifting the production start times of multiple production lines L, so all splicing jobs can be assigned in more situations. Become. Therefore, it is possible to prevent the splicing work from not being completed in time in situations where parts are frequently out of stock or other work is concentrated.

<Embodiment 4>
Embodiment 4 will be explained with reference to FIGS. 12 and 13.
The component mounting system 1 according to the fourth embodiment includes a plurality of (here, three) production lines L. Each production line L has one or more surface mounting machines 6. In the fourth embodiment as well, it is assumed that one operator 5A is in charge of work on three production lines L.

In the first embodiment described above, if it is determined in S104 that it cannot be assigned to another operator 5B (in other words, if a splicing job that cannot be assigned to another operator 5B occurs), the process ends.
On the other hand, as shown in FIG. 13, when a splicing operation that cannot be assigned to another operator 5B occurs, the control unit 30 according to the fourth embodiment controls the production order of the substrates P on one of the production lines L. A production plan is created in which the following are replaced (an example of the third creation process). Specifically, the control unit 30 selects any one production line L and creates a production plan in which the production order of the selected production line L is changed. FIG. 13 shows a case where the production order of models E and F is switched on production line L3.

The control unit 30 re-executes the allocation process assuming that the board P will be produced according to the created production plan, and if all the splicing work can be allocated as a result, it changes to the newly created production plan. Start production of substrate P.
If the control unit 30 is unable to allocate all the splicing jobs, it selects another production line L and creates a production plan in which the production order of the selected production line L is changed. The processing after creating the production plan is the same, so the explanation will be omitted.

According to the production management PC 2 according to the fourth embodiment, a plurality of splicing operations can be distributed by changing the production order of the substrates P, so that all splicing operations can be assigned in more situations. Therefore, it is possible to prevent the splicing work from not being completed in time in situations where parts are frequently out of stock or other work is concentrated.

<Embodiment 5>
Embodiment 5 will be explained with reference to FIG.
As described above, the storage unit 31 stores the predicted work time of the splicing work for each operator 5. In the fifth embodiment, the predicted work time stored in the storage unit 31 is automatically updated according to the actual work time of the operator 5.

Update of predicted work time will be explained with reference to FIG. When starting the splicing work, the operator 5 operates the operator terminal 3 to notify the operator terminal 3 that the splicing work is to be started. When the splicing work is completed, the operator 5 notifies the operator terminal 3 that the splicing work has been completed.

The operator terminal 3 regards the time from the time when the start of the splicing work is notified to the time when the end is notified as the actual working time of the splicing work, and transmits the operator ID (Identification) and the actual working time to the production management PC 2. .
The control unit 30 of the production management PC 2 stores the operator ID received from the operator terminal 3 and the actual working time in the storage unit 31 in association with each other. As a result, actual working time is accumulated for each operator 5. The control unit 30 sets the average value of all actual working times associated with the same operator ID as the predicted working time of the operator 5 identified by that operator ID.

The average value mentioned above does not have to be the average value of all the actual working hours of the operator 5. For example, it may be the average value of the actual working hours of the last predetermined number of times (for example, three times). Alternatively, the last stored actual working time (in other words, the latest actual working time) may be used as the predicted working time of the operator 5.

According to the production management PC 2 according to the fifth embodiment, the predicted working time of the splicing work is determined for each operator 5 based on the actual working time, so that changes in the proficiency level of the operators 5 and individual differences can be accommodated. This makes it possible to increase the accuracy of the timing at which alerts are issued.

<Other embodiments>
The technology disclosed by this specification is not limited to the embodiments described above and illustrated in the drawings; for example, the following embodiments are also included within the technical scope disclosed by this specification.

(1) In the second embodiment, board data is created when it is determined in S104 that assignment to another operator 5B is not possible. On the other hand, if it is determined in S103 that it cannot be assigned to one operator 5A, board data may be created without executing S104. That is, if it is determined in S103 that it cannot be assigned to one operator 5A, the board data may be created without determining whether it is assignable to another operator 5B.

(2) In the third embodiment, if it is determined in S104 that assignment to another operator 5B is not possible, a production plan is created in which the production start times of the plurality of production lines L are shifted. On the other hand, if it is determined in S103 that it is not possible to allocate to one operator 5A, a production plan may be created in which the production start times of the plurality of production lines L are staggered without executing S104. That is, if it is determined in S103 that it cannot be assigned to one operator 5A, it is not determined whether or not it can be assigned to another operator 5B, and a production plan is created in which the production start times of multiple production lines L are staggered. You may create one.

(3) In the fourth embodiment, if it is determined in S104 that assignment to another operator 5B is not possible, a production plan is created in which the production order of the boards P is changed. On the other hand, if it is determined in S103 that it cannot be assigned to one operator 5A, a production plan in which the production order of the boards P is changed may be created without executing S104. That is, if it is determined in S103 that the board P cannot be assigned to one operator 5A, it is not determined whether the board P can be assigned to another operator 5B, and a production plan in which the production order of the boards P is changed is created. good.

(4) Embodiment 2 and Embodiment 3 may be combined. For example, if it is not possible to allocate all the splicing jobs even after creating the board data, a production plan may be created in which the production start times of the plurality of production lines L are staggered. Alternatively, if it is not possible to allocate all the splicing operations even if a production plan is created in which the production start times of the plurality of production lines L are shifted, substrate data may be created.

(5) Embodiment 4 above may be combined with Embodiment 2 or 3, or with both Embodiments 2 and 3.

(6) In the above embodiment, an example has been described in which the operator 5 operates the operator terminal 3 to notify the production management PC 2 of the start and end of splicing work. In response, the operator 5 operates the operation unit 34 of the surface mounter 6 to notify the control unit of the surface mounter 6 of the start and end of splicing work, and the control unit of the surface mounter 6 sends the information to the production management PC 2. The actual working time of the splicing work may be notified.

1: Component mounting system 2: Production control PC (an example of an allocation device and computer)
5A: Operator (an example of one operator)
5B: Operator (an example of another operator)
6: Surface mounting machine 17: Component tape 30: Control section 31: Storage section E: Component L: Production line P: Board

Claims (10)

An allocation device that allocates splicing work of a component tape to an operator of a surface mounter that mounts a component supplied by a component tape holding the component onto a board,
a storage unit storing information for predicting a component run-out time of the component tape;
a control unit;
Equipped with
The control unit includes:
a prediction process that predicts a plurality of component tapes that will run out of components within a certain time based on the information;
an assignment process in which the splicing work for each component tape predicted in the prediction process is assigned to one operator so as not to overlap multiple works at the same time;
Run
In the allocation process, a splicing work allocation device that allocates splicing work in the order of component tapes with later predicted component end times so that splicing work is started earlier on component tapes with earlier predicted component end times. . The splicing work allocation device according to claim 1,
The control unit is a splicing work assignment device that executes an issuing process for issuing an out-of-parts alert a predetermined time before a scheduled start time of the assigned splicing work. The splicing work assignment device according to claim 1 or 2,
The control unit is a splicing work assignment device, wherein, in the assignment process, when a splicing job that cannot be assigned to the operator occurs, the control unit assigns the unassignable splicing job to another operator. The splicing work assignment device according to claim 1 or 2,
The surface mounter mounts components on a board based on board data indicating a component to be mounted on the board and a component tape for supplying the component,
The control unit includes:
If a splicing job that cannot be assigned to the operator occurs in the allocation process, at least one component tape to which splicing jobs cannot be assigned is replaced by a splicing job of the same type as the component tape. Executing a first creation process for creating board data for mounting a component supplied by another component tape holding the component;
If the number of components remaining on the at least one component tape becomes less than a predetermined number, the allocation process is restarted assuming that the board data created in the first creation process is to be temporarily switched and the components are mounted on the board. execute,
As a result of re-executing the allocation process, if the splicing work for all component tapes can be allocated, the production plan for the surface mounter is changed so that the number of remaining components of the at least one component tape is equal to or less than a predetermined number. A splicing work assignment device that changes the production plan to temporarily switch to the board data created in the first creation process if the production plan is created in the first creation process. The splicing work assignment device according to claim 1 or 2,
The control unit includes:
If a splicing job that cannot be assigned to the operator occurs in the allocation process, a second creation process is executed to create a production plan with staggered production start times for a plurality of production lines each having the surface mounter. death,
re-executing the allocation process assuming that the boards will be produced according to the production plan created in the second creation process;
As a result of re-executing the allocation process, if splicing work for all component tapes can be allocated, the production plan of the surface mounter is changed to the production plan created in the second creation process. Work allocation device. The splicing work assignment device according to claim 1 or 2,
The control unit includes:
If a splicing job that cannot be assigned to the operator occurs in the assignment process, a third creation process is executed to create a production plan in which the production order of the substrates is changed;
re-executing the allocation process assuming that the boards will be produced according to the production plan created in the third creation process;
As a result of re-executing the allocation process, if splicing work for all component tapes can be allocated, the production plan of the surface mounter is changed to the production plan created in the third creation process. Work allocation device. The splicing work assignment device according to claim 1 or 2,
Equipped with a storage section,
The control unit stores the actual working time of the splicing work for each operator in the storage unit, and determines the predicted working time of the splicing work based on the actual working time stored for each operator. a surface mounter that mounts components onto a board, which are supplied by a component tape holding the components;
The splicing work assignment device according to claim 1 or 2, wherein the splicing work of the component tape is assigned to an operator of the surface mounter;
A component mounting system equipped with An assignment method in which splicing work of a component tape is assigned to an operator of a surface mounter that mounts components supplied by a component tape holding the component onto a board, the method comprising:
a prediction step of predicting a plurality of component tapes that will run out of parts within a certain time based on information for predicting a component tape's component runout time;
an assignment step of allocating the splicing work for each component tape predicted in the prediction step to one operator so that multiple splicing jobs do not overlap at the same time;
including;
In the allocation step, a method for allocating splicing work in which splicing work is allocated in the order of component tapes with later predicted component end times so that splicing work is started earlier on component tapes with earlier predicted component end times. . An assignment program that assigns splicing work of a component tape to an operator of a surface mounter that mounts a component supplied by a component tape holding the component onto a board,
A prediction process that predicts a plurality of component tapes that will run out of parts within a certain time based on information for predicting a component tape's component runout time;
an allocation process in which the splicing work for each component tape predicted in the prediction process is assigned to one operator so that multiple splicing jobs do not overlap at the same time;
make the computer run
In the allocation process, a splicing work assignment program that allocates splicing work in the order of component tapes with later predicted component end times so that splicing work is started earlier on component tapes with earlier predicted component end times. .

Images