JP7203793B2 - Substrate production management system - Google Patents

Description

The present specification relates to a board production management system that manages a schedule for producing boards on which electronic components are mounted.

Board production machines that produce boards on which a large number of electronic components are mounted include solder printers, electronic component mounting machines, reflow machines, board inspection machines, and the like. Usually, these board production machines are connected to form a board production line. In general, prior to the start of production, setup work is performed to set up a board production line so that boards can be produced. In many cases, prior to the setup work, it is necessary to carry out a shipping work of receiving the necessary parts from the parts warehouse. In addition, except when the number of substrates to be produced is small, replenishment work is performed to replenish the consumed members as the production progresses. Japanese Patent Laid-Open No. 2002-200002 discloses a technical example related to work performed in a board production line.

The reel component supply method of claim 3 of Patent Document 1 discloses a step of notifying supply information of components that will run out in the circuit board production line from the production control means to the component control means of the reel warehouse. According to this, it is possible to extract the corresponding reel from a plurality of reels on the reel shelf in the order of use based on the supply information of the parts, thereby greatly improving the replenishment work efficiency.

JP 2012-182246 A

By the way, Patent Literature 1 is a technique related to replenishment work after starting production of substrates, and does not involve delivery work or setup work performed prior to the start of production. Conventionally, the start times of shipping work and setup work have been determined based on a production schedule that defines the start time of substrate production. However, the actual operating status of the substrate production line and the actual progress status of shipping work and setup work are not shared among related management devices and production managers. For this reason, inconsistencies tend to occur in the schedule for producing substrates.

For example, if shipping work or setup work for the next board type to be produced next is delayed, the board production line will be in a long idle state after finishing production of the board of the current board type that is currently being produced. In other words, the productivity of the board production line is lowered. Conversely, if the production progress of the current board type on the board production line is delayed, the members for the next board type for which setup work has been completed remain as in-process inventory.

Therefore, in this specification, it is intended to provide a board production management system that can automatically correct schedules and work implementation plans when it is determined that a problem will occur in the progress of shipping work or setup work. Make it a problem to be solved.

This specification describes a setup start time for starting a setup work for setting up the board production line so that the board can be produced on the board production line, and a shipping work for shipping the parts necessary for the production of the board from the parts warehouse. is received, the progress of at least one of the shipping work and the set-up work is detected, and when it is determined that there is a problem with the progress, the set-up start time and production of the board are started. Disclosed is a substrate production management system including a schedule correction function indicating a production start time that is a scheduled time to start production, or a progress management section that exerts a correction function of a work execution plan for the delivery work and the setup work.

In the circuit board production management system disclosed in the present specification, the progress management unit detects the progress of at least one of the shipping work and the setup work, and if it is determined that there is a problem with the progress, the schedule correction function, Or it exerts the function of correcting the work execution plan. Therefore, the board production management system can automatically correct the schedule and the work execution plan when it is determined that a problem will occur in the progress of the work.

BRIEF DESCRIPTION OF THE DRAWINGS It is the figure which showed typically the structure of the board|substrate production management system of embodiment, and the structure of a related part. 3 is a functional block diagram showing the functional configuration of a schedule management section; FIG. FIG. 4 is a diagram for explaining the operation of the substrate production management system determining the setup start time and the delivery start time; It is a figure explaining the correction function of the schedule of an inventory control part. It is a figure explaining the correction function of the schedule of a progress management part. It is a figure explaining the correction function of the work implementation plan of a progress management part.

(1. Configuration of Board Production Management System 1 of Embodiment)
A substrate production management system 1 of an embodiment will be described with reference to FIGS. 1 to 6. FIG. FIG. 1 is a diagram schematically showing the configuration of a board production management system 1 of the embodiment and the configuration of related parts. A board production management system 1 includes a schedule management unit 2 and is provided at a board production base. The substrate production base includes a production area 90 , an outside setup area 94 , a component warehouse 95 and an aisle 96 .

A first board production line 91 , a second board production line 92 and a third board production line 93 are arranged in the production area 90 . The first board production line 91 is configured by arranging a plurality of board production machines. The first board production line 91 includes a component supply shelf 911 and a progress management section 912 . The member replenishing shelf 911 temporarily stores members used for production of substrates. The member replenishment shelf 911 may be used to temporarily place equipment that is used interchangeably in the board production machine, such as a printing screen of a solder printing machine or a suction nozzle of an electronic component mounting machine. The progress management unit 912 detects the progress of board production and transmits information on the progress to the schedule management unit 2 .

Similarly, the second board production line 92 is configured by arranging a plurality of board production machines. The second substrate production line 92 includes a member supply shelf 921 on which members are temporarily placed, and a progress management unit 922 that detects the progress of substrate production and transmits it to the schedule management unit 2 . The third board production line 93 is configured by arranging a plurality of board production machines. The third substrate production line 93 includes a member supply shelf 931 on which members are temporarily placed, and a progress management unit 932 that detects the progress of substrate production and transmits it to the schedule management unit 2 .

Here, the preparation work prior to starting the production of substrates will be described. The setup work is performed when switching the type of board to be produced on the board production lines (91, 92, 93), in other words, when switching from the current board type to the next board type. In the setup work, the board production lines (91, 92, 93) are arranged so that the next board type can be produced. The setup work includes internal setup work and external setup work. The internal setup work is performed in the substrate production lines (91, 92, 93). The external setup work is performed at a place different from the board production line (91, 92, 93).

There are roughly two ways to proceed with the setup work. In the first setup method, only internal setup work is performed. That is, after the board production line (91, 92, 93) completes the production of the current board type, the production operation is stopped and the internal setup work for the next board type is carried out. In the second setup method, both the external setup work and the internal setup work are used. That is, while the current board type is being produced in the board production lines (91, 92, 93), the external setup work for the next board type is carried out in parallel. Then, when the production of the current board type is completed, the external setup work is shifted to the internal setup work. An example of the external setup work performed by the second setup method is the external setup work of the component supply device of the electronic component mounting machine, but is not limited to this.

More specifically, the component supply device includes a feeder-type component supply device and a tray-type component supply device. A feeder-type component supply device is configured by arranging a plurality of feeders on a pallet table. Each feeder replaceably holds a component reel. A carrier tape holding a plurality of electronic components is wound around the component reel. The work of loading the component reel into the feeder and the work of mounting the feeder on the pallet table can be performed by off-line setup work. Further, the tray-type component supply device is configured by placing a tray on a pallet table. A plurality of electronic components are arranged in a grid on the inner side of the upper surface of the tray. The work of placing the trays on the pallet table can be carried out as an off-line setup work.

On the other hand, the work of mounting the component supply device on the main body of the electronic component mounting machine is an internal setup work. According to the second setup method, most of the setup work can be carried out in advance by external setup work. Therefore, the time required for the inner setup work of the second setup method is shorter than the time required for the inner setup work of the first setup method. That is, the second set-up method shortens the production stop time of the substrate production lines (91, 92, 93) and has high productivity as compared with the first set-up method.

There is also a method of setup work in which the component supply device is not removed from the main body of the electronic component mounting machine. For example, a feeder with a replaced component reel can be prepared in advance in the external setup work, and the prepared feeder can be mounted on the pallet table of the component supply device in the internal setup work. This method is effective when the number of new electronic components to be used is small. There are variations other than those described above in how to proceed with the setup work. The time to start the setup work is called the setup start time.

The external setup area 94 is a place where the above-described external setup work is performed. An external setup area 94 is adjacent to the production area 90 and is shared by the three board production lines (91, 92, 93). The external setup area 94 is provided with a progress detector 31 that detects the progress of the external setup work. The pallet stand of the component supply device described above has a communication function and is connected to the progress detection section 31 for communication. The pallet table recognizes feeders loaded by workers and trays placed by workers. The pallet table further transmits information on the attached feeder and the placed tray to the progress detector 31 .

A code recognition unit for recognizing identification codes attached to feeders, component reels, and trays is also communicatively connected to the progress detection unit 31 . The identification code identifies individual feeders, component reels, and trays. A bar code, for example, is used as the identification code, and a bar code reader, for example, is used as the code recognition unit. The code recognition section transmits information on the recognized identification code to the progress detection section 31 .

The progress detection unit 31 detects the progress of the external setup work based on the information received from the pallet stand and the code recognition unit. For example, when 40 feeders are mounted on the pallet table in the external setup work, if 10 feeders have already been mounted, the progress detection unit 31 can detect that 25% of the external setup work has progressed. The progress detector 31 transmits information on the progress of the external setup work to the schedule manager 2 .

Further, the progress management units (912, 922, 932) of the board production lines (91, 92, 93) have the same function as the progress detection unit 31 and detect the progress of the internal setup work. The progress management units ( 912 , 922 , 932 ) transmit information on the progress of the internal setup work to the schedule management unit 2 .

The component warehouse 95 is provided slightly away from the external setup area 94 . A component warehouse 95 , an external setup area 94 , and a production area 90 are interconnected through a passageway 96 so that they can come and go. The component warehouse 95 stores components necessary for the substrates produced in the substrate production lines (91, 92, 93). In addition to substrate raw materials and electronic components, necessary members include solder, bonding wires, adhesives, and the like.

The component warehouse 95 is provided with an inventory detection unit 32 that detects the inventory quantity of the stored components. The inventory detection unit 32 responds with the stock quantity of the specified parts in response to the inquiry specifying the parts from the schedule management part 2 . In addition, the inventory detection unit 32 is linked with the parts procurement system 33 . The component procurement system 33 has an automatic procurement function for compensating for a decrease in inventory detected by the inventory detection unit 32, and a manual procurement function according to the operator's instruction operation.

Here, the delivery work prior to the setup work will be described. The shipping work is a work of receiving the members necessary for the production of the substrate from the member warehouse 95 and transporting them to at least one of the external setup area 94 and the substrate production lines (91, 92, 93). As indicated by the arrow A in FIG. 1, the worker supplies the members necessary for the internal setup work from the member warehouse 95 to the member replenishment racks (911, 921, 931) of the substrate production lines (91, 92, 93) or the substrates. Transport to near the production machine. Also, as indicated by arrow B, the worker transports the members necessary for the external setup work from the component warehouse 95 to the external setup area 94 .

Except for the case where the number of substrates to be produced is small, replenishment members that are not required for immediate setup work but are required as substrate production progresses are generated. Delivery work can be divided into two types depending on the delivery timing of the replenishment members. The first is batch delivery work, in which the worker collectively receives from the component warehouse 95 the components required for the production number of substrates determined. The second is the split delivery work, in which the worker splits the members required for the setup work and the members required as the board production progresses, and receives them from the member warehouse 95 . The time when the shipping work is started is called the shipping start time.

(2. Functional Configuration of Schedule Management Unit 2)
Now let us move on to the description of the functional configuration of the schedule management unit 2 . The schedule management unit 2 plays a major role in the board production management system 1. FIG. The schedule management unit 2 is configured using a computer device that has a CPU and operates with software. The schedule management unit 2 has a display unit 21 and an input unit 22 . The schedule management section 2 can access the production database 23 . The production manager sets, in the production database 23, the order of production of a plurality of board types to be produced on the board production lines (91, 92, 93) and the production start time schedule for each board type. The production database 23 also stores a plurality of recipe data describing in detail production operations and the like when producing boards of various board types on the board production lines (91, 92, 93).

By referring to the recipe data created for each board type, the schedule management unit 2 can grasp the members required for the board type. By referring to and comparing recipe data corresponding to the next substrate type scheduled to be produced and the previous substrate type to be produced before that, the schedule management unit 2 can grasp the necessary members for the shipping work. can grasp the work contents of the setup work. In other words, the parts that are not used in the previous board type but will be used in the next board type need to be removed from the warehouse. In addition, setup work is required for the delivered parts.

In addition, the schedule management unit 2 can command the parts procurement system 33 to procure parts as needed. The component procurement system 33 has an automatic procurement function for procuring components according to instructions from the schedule management unit 2 .

FIG. 2 is a functional block diagram showing the functional configuration of the schedule management section 2. As shown in FIG. The schedule management unit 2 includes, as management function units, a production start time grasping unit 41, a setup time estimation unit 42, a setup start time determination unit 43, a delivery time estimation unit 44, a delivery start time determination unit 45, an inventory management unit 46, a progress It has a situation management section 47 and a start time guidance section 48 .

When the scheduled time for starting production of a certain board type in a certain board production line (91, 92, 93), ie, the production start time, is set in the production database 23, the production start time grasping unit 41 operates. The production start time grasping unit 41 also operates when the set production start time is corrected. After the operation of the production start time grasping unit 41, the setup time estimation unit 42, the setup start time determination unit 43, the delivery time estimation unit 44, and the delivery start time determination unit 45 operate in order. The production start time grasping unit 41, the setup time estimation unit 42, the setup start time determination unit 43, the delivery time estimation unit 44, and the delivery start time determination unit 45 perform the board production management method of the embodiment.

The inventory management unit 46 investigates the inventory amount in the parts warehouse at the inventory confirmation time set by itself. The progress management unit 47 detects the progress of at least one of the delivery work and the setup work, and performs predetermined management based on the progress. In addition, the start time guide section 48 guides that at least one of the delivery start time and the setup start time has arrived. Detailed functions of each management function unit of the schedule management unit 2 will be described in detail in the explanation of the operation of the substrate production management system 1. FIG.

(3. Operation of board production management system 1 of embodiment)
Next, the operation of the board production management system 1 of the embodiment will be described. FIG. 3 is a diagram for explaining the operation of the board production management system 1 to determine the setup start time Sd and the delivery start time Ss. In FIG. 3, the present time is Sn, and time t elapses toward the right. The production start time grasping unit 41 grasps from the production database 23 the production start time Sp, which is the scheduled time for starting the production of a certain board type on the board production lines (91, 92, 93).

Following the production start timing grasping unit 41, the setup time estimating unit 42 operates. The setup time estimator 42 estimates the setup time required for setup work corresponding to a certain board type. In this embodiment, the second set-up method and split delivery work are adopted. Therefore, the setup time is the sum of the external setup time Td1 required for the external setup work and the internal setup time Td2 required for the internal setup work. Further, in the delivery work, only the members required for the off-line setup work out of the members required for the production of substrates are delivered. The setup time estimator 42 can estimate the external setup time Td1 based on the types and quantities of members required for the external setup work.

To elaborate on one example of the estimation method, a standard loading time is set for the task of loading the component reel into the feeder. In addition, a standard removal time is set for the work of removing feeders that are no longer needed from the pallet table, and a standard mounting time is set for the work of mounting new feeders on the pallet table. The standard loading time, standard removal time, and standard mounting time are set with high accuracy based on past work results.

The setup time estimator 42 can estimate the total loading time by multiplying the number of component reels to be loaded by the standard loading time. The setup time estimating unit 42 can estimate the total removal time by multiplying the number of feeders to be removed by the standard removal time, and can estimate the total mounting time by multiplying the number of feeders to be mounted by the standard removal time. The setup time estimator 42 adds the total loading time, the total removal time, and the total mounting time to obtain the external setup time Td1.

Also, the setup time estimator 42 can estimate the internal setup time Td2 based on the work content of the internal setup work. For example, a standard attachment/detachment time is set for the task of removing a component supply device that is no longer needed and mounting a new component supply device. The setup time estimator 42 can estimate the total attachment/detachment time by multiplying the standard attachment/detachment time by the number of component supply devices to be attached/detached in the internal setup work. Even in the case where the feeder is attached and detached instead of the component feeding device, the setup time estimator 42 can estimate the total attachment and detachment time by the same method.

The internal setup time Td2 includes the transport time for transporting the component supply devices and feeders set up in the external setup area 94 to the substrate production lines (91, 92, 93). Further, the internal setup time Td2 includes confirmation time for confirming that the setup work has been successfully completed. Standard attachment/detachment time, transfer time, and confirmation time are also set with high accuracy based on past work results. The setup time estimator 42 adds the transport time, the total attachment/detachment time, and the confirmation time to find the inner setup time Td2. In addition, when the setup work is carried out by a plurality of workers, the setup time estimator 42 estimates the outer setup time Td1 and the inner setup time Td2 in consideration of the number of workers.

Following the setup time estimation section 42, the setup start timing determination section 43 operates. The setup start time determination unit 43 determines the setup start time Sd based on the production start time Sp, the external setup time Td1, and the internal setup time Td2. In addition, the setup start time determination unit 43 passes information on the setup start time Sd to the progress management unit 47 .

When determining the setup start time Sd, the setup start time determining unit 43 considers the setup risk margin time TRd corresponding to the risk of prolonging the setup work. The setup risk margin time TRd is set in consideration of variations in the work ability of workers, impediments that may occur suddenly, and the like. The setup start time determination unit 43 adds the external setup time Td1, the internal setup time Td2, and the setup risk margin time TRd to determine the estimated setup time. Further, the setup start time determining unit 43 sets a timing earlier than the production start time Sp by the expected setup time as the setup start time Sd. In addition, the setup start timing determining unit 43 considers the operating time during which the operator can perform the setup work.

For example, if the worker's working hours are set to 8:00 to 12:00 and 13:00 to 17:00 on weekdays, the production start time Sp is 13:00 on Wednesday, December 7, and the estimated setup time is 6 hours. assume. In this case, the setup start time determination unit 43 allocates the estimated setup time within the working hours of the worker, and determines the setup start time Sd at 15:00 on December 6th. Also, for example, if a plurality of workers can work in shifts throughout the 24-hour period, the setup start timing determination unit 43 does not need to consider the working hours of the workers.

After the setup start timing determining unit 43, the leaving time estimating unit 44 operates. The delivery time estimating unit 44 estimates the delivery time Ts required for the delivery work of receiving the components necessary for the external setup work from the component warehouse 95 and transporting them to the external setup area 94 . Based on the type and quantity of the parts, the delivery time estimating unit 44 determines the required time to wait for the parts to come out from the parts warehouse 95, the number of times and the required time to load and unload the parts onto and from the carrier for transportation, and the transportation time. It is possible to estimate the number of times a tool is reciprocated between the material warehouse 95 and the external setup area 94, the required time, and the like. The leaving time estimator 44 adds these required times to obtain the leaving time Ts. In addition, when the shipping work is carried out by a plurality of workers, the shipping time estimating unit 44 estimates the shipping time Ts in consideration of the number of workers.

After the delivery time estimating section 44, the delivery start time determination section 45 operates. The delivery start time determining unit 45 determines the delivery start time Ss based on the setup start time Sd and the delivery time Ts. In addition, the delivery start time determining unit 45 passes information on the delivery start time Ss to the progress management unit 47 .

When determining the delivery start time Ss, the delivery start time determining unit 45 considers the delivery risk margin time TRs corresponding to the risk of the delivery work being prolonged. The delivery risk margin time TRs is set in consideration of variations in the work ability of workers, impediments that may occur suddenly, and the like. The delivery start time determining unit 45 adds the delivery time Ts and the delivery risk margin time TRs to obtain the expected delivery time. Furthermore, the delivery start time determining unit 45 sets a delivery start time Ss that is earlier than the setup start time Sd by the expected delivery time. In addition, the delivery start time determination unit 45, like the setup start time determination unit 43, considers the operating time during which the worker can perform the delivery work.

After the delivery start time determination unit 45, the inventory management unit 46 operates. The inventory management unit 46 sets an inventory confirmation time St that is earlier than the delivery start time Ss. In addition, the inventory management unit 46 passes information on the inventory confirmation time St to the progress management unit 47 . When setting the inventory confirmation time St, the inventory management unit 46 considers the standard procurement time Tt of the parts and the procurement risk margin time TRt corresponding to the risk of the procurement time Tt being prolonged. The procurement risk margin time TRt is set in consideration of variations in the procurement time Tt, impediments that may occur suddenly, and the like. The inventory management unit 46 obtains the expected procurement time by adding the procurement time Tt and the procurement risk margin time TRt. Furthermore, the inventory management unit 46 sets the timing earlier than the delivery start timing Ss by the estimated procurement time as the inventory confirmation timing St. After that, the inventory management unit 46 is suspended until the inventory confirmation time St arrives.

When the inventory confirmation time St arrives, in other words, when the current time Sn coincides with the inventory confirmation time St, the inventory management unit 46 investigates the inventory amount of the parts warehouse 95 . More specifically, the inventory management unit 46 designates the parts necessary for the external setup work and inquires the inventory amount of the parts to the inventory detection unit 32 of the parts warehouse 95 . The inventory management unit 46 does nothing when the inventory amount of the parts is sufficient. However, if the inventory quantity of any part is insufficient, the inventory management unit 46 instructs the part procurement system 33 to procure the part in question.

According to the procurement instruction, normally, the missing parts are procured and stored in the parts warehouse 95 by the delivery start time Ss. However, there is a possibility that the procurement time Tt will be longer than expected. In this case, the inventory management unit 46 exhibits a schedule correction function. FIG. 4 is a diagram for explaining the schedule correction function of the inventory control unit 46. As shown in FIG. In FIG. 4, the current time Sn coincides with the inventory confirmation time St, and the inventory control unit 46 instructs procurement of the missing parts. As a result, in the parts procurement system 33, it was found that the procurement time Tt prolongs beyond the procurement risk margin time TRt. In other words, it was found that the timing of entering the parts to be procured into the parts warehouse 95 was not in time for the delivery start time Ss.

At this time, the inventory management unit 46 corrects to delay the start time of at least one of the shipping start time Ss, the setup start time Sd, and the production start time Sp. In the example of FIG. 4, the inventory management unit 46 delays the delivery start time Ss. As a result, the time zone in which the leaving time Ts occurs is delayed. As a result, the shipping risk margin time TRs decreases, but does not become zero. Therefore, the inventory control unit 46 does not have to correct the setup start time Sd and the production start time Sp. If the procurement time Tt is significantly prolonged, the inventory management unit 46 corrects the setup start time Sd and the production start time Sp as necessary.

The progress management unit 47 receives the information of the setup start time Sd, the delivery start time Ss, and the inventory confirmation time St, starts operation, and continues the operation thereafter. The progress management unit 47 displays the setup start time Sd, the delivery start time Ss, and the inventory confirmation time St on the display unit 21 to notify the production manager and workers. In addition, the progress management unit 47 passes information on the setup start time Sd and the delivery start time Ss to the start time guidance unit 48 . Further, when the setup start time Sd and the production start time Sp are corrected as described later, the progress management unit 47 sequentially transfers the corrected information to the start time guidance unit 48 .

The progress management unit 47 detects the progress of at least one of the delivery work and the setup work. Specifically, the progress management section 47 designates the parts necessary for the external setup work, and inquires of the inventory detection section 32 of the parts warehouse 95 about the shipping amount of the parts. As a result, the progress management unit 47 can grasp the shipping status of the parts and detect the progress of the shipping work. For example, if half of the parts required for the external setup work have already been delivered, the progress management unit 47 can detect that the progress of the delivery work is 50%.

Further, the progress management unit 47 can receive information on the progress of the external setup work from the progress detection unit 31 of the external setup area 94 . Furthermore, the progress management unit 47 can receive information on the progress of internal setup work from the progress management units (912, 922, 932) of the board production lines (91, 92, 93). Therefore, the progress management section 47 can detect the progress of the external setup work and the internal setup work.

Further, the progress management unit 47 predicts at least one of the completion time of the shipping work and the completion time of the setup work based on the progress, and notifies the production manager and workers of the prediction result. As a notification method, a method of displaying the prediction result on the display unit 21 is used. Without being limited to this, the progress management unit 47 may notify the production manager and the portable terminals possessed by the workers of the prediction result.

The progress management unit 47 exerts a schedule correction function or a work implementation plan correction function when a problem occurs in the progress. FIG. 5 is a diagram for explaining the schedule correction function of the progress management unit 47. As shown in FIG. In FIG. 5, the current time Sn is the time when 75% of the leaving time Ts has passed from the leaving start time Ss. At this point, the progress management unit 47 detects that the delivery work progress is 50%, and grasps the impediment of the progress. The progress management unit 47 corrects at least one of the setup start time Sd and the production start time Sp based on the prediction result.

In the example of FIG. 5, the progress management unit 47 predicted that the delivery time Ts would be much longer than originally estimated, and that the completion time of the delivery work would be later than the initial setup start time Sd. Therefore, the progress management unit 47 makes a correction to delay the setup start time Sd. As a result, the occurrence time period of the external setup time Td1 and the internal setup time Td2 is delayed. As a result, the setup risk margin time TRd decreases, but does not become zero. Therefore, the progress management unit 47 does not have to correct the production start time Sp. If the delivery time Ts is significantly prolonged, the inventory management unit 46 corrects the production start time Sp as necessary.

FIG. 6 is a diagram for explaining the work execution plan correction function of the progress management unit 47. As shown in FIG. In FIG. 5, the current time Sn is the time when 75% of the leaving time Ts has passed from the leaving start time Ss. At this point, the progress management unit 47 detects that the delivery work progress is 50%, and grasps the impediment of the progress. The progress management unit 47 corrects at least one of the work execution plan for the delivery work and the work execution plan for the setup work based on the prediction result.

In the example of FIG. 6, the progress management unit 47 predicted that the delivery time Ts would be much longer than originally estimated, and that the completion time of the delivery work would be later than the initial setup start time Sd. Therefore, the progress management unit 47 corrects the work execution plan for the delivery work. For example, the progress management unit 47 corrects the work execution plan from the current timing Sn to the setup start time Sd (the hatched time period in FIG. 5) so that the shipping work will be completed at the setup start time Sd. do.

Specifically, the current workers are replaced with highly skilled workers, the number of workers is increased, and the operating hours are extended (so-called overtime). This eliminates the need for the progress management unit 47 to correct the schedule after the setup start time Sd. If the setup start time Sd is delayed even if the work implementation plan for the shipping work is corrected, the progress management unit 47 can correct the work implementation plan for the setup work to maintain the production start time Sp. can.

Based on the latest information received from the progress management section 47, the start time guide section 48 guides the production manager and workers that at least one of the delivery start time Ss and the setup start time Sd has arrived. As a guidance method, a method of displaying the delivery start time Ss and the setup start time Sd on the display unit 21 is used. Without being limited to this, the start timing guidance unit 48 may provide guidance to the mobile terminals possessed by the production manager and workers. According to this, the worker can timely start the unloading work and the setup work based on the guidance. Therefore, delay in starting work is suppressed.

As can be seen from the above description, the delivery start time Ss and the setup start time Sd are appropriately determined based on the production start time Sp, the external setup time Td1, the internal setup time Td2, and the delivery time Ts. Further, when the production start time Sp is changed in accordance with a change in the operation status of the board production lines (91, 92, 93), the board production management system 1 operates again, and the delivery start time Ss and setup start time Sd are changed. is automatically determined again. On the other hand, if any of the procurement time Tt, the delivery time Ts, the external setup time Td1, and the internal setup time Td2 is prolonged, the delivery start time Ss, the setup start time Sd, and the production start time Sp is corrected.

Therefore, the actual operating status of the substrate production lines (91, 92, 93) and the actual progress status of shipping work and setup work are managed in association with each other. Furthermore, this management status is shared with the production manager and workers. As a result, there is no inconsistency in the schedule for producing substrates.

As for the replenishment members that become necessary as the substrate production progresses, the member replenishment timing is set after the production start time Sp. The board production management system 1 can read the material supply time as the production start time Sp, and determine the delivery start time and the setup start time in the same manner as in the case of the parts required for the external setup work. However, since the replenishment members are transported from the member warehouse 95 to the substrate production lines (91, 92, 93), the external setup time Td1 is not required.

Also, even when the first setup method is adopted and only the internal setup work is performed, the board production control system 1 can determine the delivery start time and the setup start time in the same manner. Also in this case, the external setup time Td1 becomes unnecessary.

Further, the schedule correction function of the inventory management unit 46, the schedule correction function of the progress management unit 47, and the work execution plan correction function can be replaced with a correction proposal function. In other words, the inventory management unit 46 and the progress management unit 47 cannot automatically execute corrections, but can display the items to be corrected on the display unit 21 to prompt the production manager to make corrections. When the production manager operates the input unit 22 and approves the items to be corrected, the inventory management unit 46 and the progress management unit 47 can execute corrections.

(4. Aspects and Effects of Board Production Management System 1 of Embodiment)
The board production management system 1 of the embodiment includes a production start time grasping unit 41 for grasping a production start time Sp, which is a scheduled time for starting the production of boards in board production lines (91, 92, 93), and a board production line (91, 92, 93). A setup time estimating unit 42 for estimating the setup time (outer setup time Td1, inner setup time Td2) required for setup work for setting up the circuit board production lines (91, 92, 93), and the production start time Sp and the setup time A setup start time determination unit 43 that determines a setup start time Sd for starting setup work, and a setup start time determining unit 43 that receives the components necessary for the production of the board from the component warehouse 95 and selects a place for the setup work (outside setup area 94). and at least one of the substrate production lines (91, 92, 93). and a delivery start time determining unit 45 for determining the delivery start time Ss.

According to this, the appropriate setup start time Sd can be determined by grasping the production start time Sp of the board and estimating the setup time (outside setup time Td1, inner setup time Td2) required for the setup work. Furthermore, by estimating the delivery time Ts required for the delivery work, it is possible to determine an appropriate delivery start timing Ss. Therefore, it is possible to optimize the start timing of the setup work and the delivery work prior to the start of production of the substrates. As a result, a decrease in productivity of the board production line due to schedule inconsistency is suppressed, and an increase in in-process inventory for which setup work has been completed is suppressed.

In addition, the setup work includes an external setup work whose implementation location is the external setup area 94, and an internal setup work whose implementation location is the substrate production line (91, 92, 93) and is performed after the external setup work. include. According to this, the start timing of the setup work and the delivery work can be optimized by the second setup method with high productivity that uses both the external setup work and the internal setup work.

In addition, the shipping work is a batch shipping work of collectively receiving from the material warehouse 95 the members necessary for a predetermined number of substrates to be produced. It is a division delivery work of dividing and receiving from the parts warehouse 95. According to this, the start timing of the setup work and the shipping work can be optimized for both the batch shipping work and the divided shipping work.

Furthermore, at least one of the delivery start time determination unit 45 and the setup start time determination unit 43 considers a risk margin time (delivery risk margin time TRs, setup risk margin time TRd) corresponding to the risk of prolonged work. According to this, a margin corresponding to variations in the working ability of the workers and impediments that may occur unexpectedly is ensured.

Furthermore, the board production management system 1 of the embodiment investigates the inventory amount of the component warehouse 95 at the inventory confirmation time St earlier than the delivery start time Ss, and if the component is insufficient, instructs the procurement of the component. An inventory management unit 46 is further provided. According to this, the missing parts are procured and stored in the parts warehouse 95 by the delivery start time Ss. Therefore, there is no problem of shortage of materials at the delivery start time Ss.

In addition, when the arrival time of the parts to be procured into the parts warehouse 95 is not in time for the delivery start time Ss, the inventory control unit 46 sets at least one of the delivery start time Ss, the setup start time Sd, and the production start time Sp. Modify the timing or prompt the production manager to modify at least one start timing. According to this, the schedule correction function works and the subsequent schedule is optimized.

Furthermore, the board production management system 1 of the embodiment detects the progress of at least one of the delivery work and the setup work, and predicts at least one of the completion time of the delivery work and the completion time of the setup work based on the progress. , and a progress management unit 47 for notifying the production manager of the prediction result. According to this, the production manager can grasp the latest schedule accurately and without delay.

Further, the progress management unit 47 corrects at least one of the setup start time Sd and the production start time Sp based on the prediction result, or prompts the production manager to correct at least one of the start times. According to this, the schedule correction function works and the subsequent schedule is optimized.

In addition, the progress management unit 47 corrects at least one of the work execution plan of the shipping work and the work execution plan of the setup work based on the prediction result, or corrects at least one of the plans to the production manager. prompt. According to this, the function of correcting the work execution plan works, and the subsequent schedule is optimized.

Furthermore, the board production management system 1 of the embodiment further includes a start time guide section 48 that guides that at least one of the delivery start time and the setup start time has arrived. According to this, the worker can start the work in a timely manner based on the guidance, so delay in starting the work can be suppressed.

Further, the board production management method of the embodiment grasps the production start time Sp, which is the scheduled time to start the production of boards on the board production lines (91, 92, 93), and controls the board production lines (91, 92, 93) so that the boards can be produced. 91, 92, 93) are estimated, and based on the production start time Sp and the setup time, the setup start time Sd for starting the setup work. is determined, and the materials necessary for the production of the board are received from the material warehouse 95 and transported to at least one of the place where the setup work is performed (outside setup area 94) and the board production lines (91, 92, 93). Then, based on the setup start time Sd and the delivery time Ts, the delivery start time Ss for starting the delivery work is determined.

According to this, as in the board production management system 1 of the embodiment, it is possible to optimize the start timing of the setup work and the delivery work prior to the start of production of the board.

(5. Applications and Modifications of Embodiments)
Note that the hardware configuration of the board production management system 1 can be variously modified. For example, in a board production base having only one first board production line 91 , the progress management section 912 can also serve as each management function section of the schedule management section 2 . Also, the setup risk margin time TRd and the shipping risk margin time TRs can be used as one risk margin time without being distinguished from each other. Furthermore, the method of estimating the external setup time Td1, the internal setup time Td2, and the delivery time Ts described in the embodiment is an example, and various other estimation methods can be used. Various other applications and modifications are possible for this embodiment.

1: PCB production management system 2: Schedule management unit 23: Production database 31: Progress detection unit 32: Inventory detection unit 33: Parts procurement system 41: Production start time grasping unit 42: Setup time estimation unit 43: Setup start time determination unit 44: Delivery time estimation unit 45: Delivery start time determination unit 46: Inventory management unit 47: Progress management unit 48: Start time guide unit 91: First board production line 92: Second board production line 93: Third board production Line 94: External setup area 95: Material warehouse Sp: Production start time Sd: Setup start time Ss: Delivery start time St: Inventory confirmation time Td1: External setup time Td2: Internal setup time TRd: Setup risk margin time Ts: Delivery time TRs: Shipping risk margin time

Claims (6)

A setup start time for starting setup work for setting up the board production line so that boards can be produced on the board production line, and a shipping start for starting shipping work for shipping materials necessary for production of the board from a material warehouse. receive the time
detecting progress of at least one of the shipping work and the setup work;
A schedule correction function that indicates the production start time, which is the scheduled time to start production of the board, or the work execution of the shipping work and the setup work, when it is determined that the progress status will be hindered. A progress management department that demonstrates the function of revising plans,
board production management system. The progress management unit
Departure status judgment for judging that there is a problem with the progress based on the time elapsed from the delivery start time and the progress of the delivery work at that time;
Performing at least one of determining that the progress is in trouble based on the time elapsed from the start of the setup and the progress of the setup work at that time;
The substrate production management system according to claim 1. The correction function of the schedule predicts at least one of the end time of the shipping work and the end time of the setup work based on the progress, and the setup start time and the production start time based on the prediction result. 3. The substrate production control system according to claim 1, wherein the function is to correct the start time of at least one of The correction function of the work execution plan predicts at least one of the completion time of the shipping work and the completion time of the setup work based on the progress, and performs the work of the shipping work based on the prediction result. 3. The board production management system according to claim 1, wherein the function is to modify at least one of the plan and the work execution plan of the setup work. The progress management unit replaces the current worker with a highly skilled worker when correcting at least one of the work execution plan for the delivery work and the work execution plan for the setup work. 5. The board production management system according to claim 1, 2 or 4. 2. The progress management unit increases the current number of workers when modifying at least one of the work execution plan for the shipping work and the work execution plan for the setup work. 5. The substrate production management system according to any one of 4.

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