JPH11312899A - Out of stock parts predicting system for production of identical type machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an out of stock part predicting system for production of same type of machine which can comprehend the numbers of parts in stock with high accuracy, and at the same time, can appropriately predict out of parts when producing the identical type of printed board units. SOLUTION: A parts out of stock predicting system is provided with a parts-in-stock database 10, in which the parts constituting a printed board unit and the required numbers of the parts and the total number of reel members required for the production are registered at the time of continuity the production of the identical type of printed board units and an actual data collecting means 11, which updates the data registered in the parts-in-stock database by reel members by calculating the consumption of parts by each minimum units of the number of produced printed board units, and at the same time, informing the replenishing timing of the parts in order by means of an informing means. When the printed board units are produced continuously, the data about the number of parts in stock are updated by each minimum unit of the number of produced printed board units which is the data about the actual production against the out of stock parts in containing the parts constituting the printed board units, the required numbers of the parts, and the total number of reel members required for the production. Consequently, the number of parts in stock can be updated immediately, based on the actual production of the printed board unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the production of printed circuit board units of the same model, which makes it possible to grasp the stock quantity of parts with high accuracy and to appropriately predict the lack of parts. It relates to a prediction system.

[0002]

2. Description of the Related Art When a printed circuit board unit is produced, a production line of the printed circuit board unit includes, for example, a printing machine, an adhesive supply, a chip mounter for mounting chip components, an SOP mounter for mounting large components, and a connector. After mounting a predetermined component on the printed board, the heating process by reflow completes the production of the printed board unit.

[0003] For example, a chip component such as a chip capacitor uses a reel member stored in units of, for example, 5,000 as a handling unit. Further, in the case of producing the same type of printed board unit, it is necessary to replace the reel member when the chip mounter has run out of parts.

[0004] As a method of estimating the replacement time of the reel member, for example, a required reel member quantity is calculated with respect to the production plan quantity of the printed board unit, and the time until the reel member is replaced is determined by one reel. There is a method in which the number of parts held by a member is divided by the number of parts required to produce one printed board unit, and the result is multiplied by the tact time required to produce one printed board unit.

That is, the required number of reel members with respect to the number of production sheets is obtained by the following equation. -Required reel member quantity for production quantity = (production quantity x number of parts required for one printed circuit board unit) 部品 quantity of components held by one reel member Next, the time required for replacing the reel member is as follows. Time until replacement = (quantity of parts held by one reel member / quantity of parts required for one printed circuit board unit) × tact time for producing one printed circuit board unit.

The tact time is set in advance, and the supply / discharge time of the printed circuit board to / from the chip mounter constituting the production line, the time for actually mounting components, and the loss time of the chip mounter And the addition of Further, in the production progress, an error occurs in the production quantity between the actual production result of the printed board unit and the production plan of the printed board unit.

[0007] This means that an error occurs when estimating the replacement time of the reel member. In particular, when the same type of printed circuit board unit is continuously produced for one week, a large error occurs in estimating the replacement time of the reel member.

[0008]

As described above, the prior art has the following problems.

1) Since the parts inventory quantity is managed in consideration of the tact time with respect to the production plan quantity of the printed board unit, a large error may occur in the replacement time of the reel member.

2) As a result, it is not possible to grasp the time for replacing the reel member with high accuracy. Further, it is not possible to grasp the parts stock quantity with high accuracy.

3) For this reason, preparation for component replenishment and component replenishment work in case of component exhaustion are complicated.

4) Further, when a delay occurs in the production of a printed board unit, it is not possible to notify a worker of a highly accurate component out time to an operator.

[0013]

In order to solve the above problems, the present invention takes the following measures.

When continuing to produce printed board units,
For the parts inventory data including the parts and the required number of parts constituting the printed board unit and the total amount of reel members required for this, the parts inventory quantity is Update data.

By taking the above-described means, the part inventory quantity is updated in an immediate process based on the production results of the printed board unit.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention adopts the following embodiments.

As shown in FIG. 1, the component shortage predicting system 1 is designed so that when the same type of printed board unit is to be continuously produced, the components constituting the printed board unit, the required number thereof, and the total amount of reel members required for this are And a results collection unit 11 for updating data of each reel member registered in the parts inventory database 10 every time one printed board unit is produced while continuing to produce the printed board unit. Is provided.

According to the above embodiment, the updating of the parts inventory quantity is immediately processed for each minimum unit of the printed board unit production quantity, so that the maintenance work of the parts inventory quantity is reduced. Also, the parts inventory quantity is grasped with high accuracy.

Further, the performance collecting means 11 calculates the consumption of the parts based on the information from the detecting means 12 which detects the production results when the same type of printed circuit board unit is continuously produced, and determines the replenishment time of the parts. It has a function of notifying by the notifying unit 14 each time one unit is produced.

By adopting the above-described embodiment, the operator is notified of the replenishment timing of the parts for each minimum unit of the production quantity of the printed board unit in order, so that the preparation for the replenishment of the parts is facilitated before the parts run out. .

Further, each time a printed circuit board unit of the same model is completed one by one, the performance collecting means 11 compares the time with the time of the original production plan, and if it is late, adds the time for the delay to the next part. It has a function to correct the time at which it runs out.

By adopting the above-described embodiment, the time at which parts are cut off is corrected every time one printed board unit is produced in response to a delay in the production of printed board units.

Further, the performance collecting means 11 includes facilities 15a, 15 for producing printed circuit board units of the same model.
If a trouble is stopped due to the factors b and 15c itself, it has a function of correcting the time at which the next part is cut off in addition to the time of the stop.

By adopting the above-described embodiment, the time at which a part is cut is corrected including the time at which trouble occurs due to a factor of the equipment itself in response to a delay in the production of a printed circuit board unit. To the operator.

Further, the result collecting means 11 completes the part replenishment operation by the identification code of the reel member to be replaced when the part read by the reading means 13 becomes empty and the identification code of the reel member to be supplied. It has a function to execute processing.

By taking the above-described embodiment, as a means for processing the completion of the part replacement operation, the identification code of the reel member to be replaced when the part being replaced in the normal replacement operation becomes empty becomes empty. , By reading the identification code of the reel member to be supplied by the reading means,
Eliminates the need for special operations. Also, for this system,
Check that the refilled reel member is the correct part.
In addition, replacement data is obtained by updating data of each reel member registered in the parts inventory database. Further, it is confirmed that the reel member to be replenished has been attached to the equipment.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A typical embodiment according to the present invention will be described with reference to FIGS.

FIG. 2 is a block diagram showing an embodiment of the present invention.

Referring to FIG.
Is a parts inventory database 31, an arithmetic processing unit 32,
A production result counting unit 33, a barcode reader 34,
It comprises a display unit 35, mounters 36a, 36b, 36c, and detection units 37a, 37b, 37c.

The parts inventory database 31 pre-registers the components constituting the printed board unit, the required number thereof, and the total amount of reel members necessary for continuing production of the same type of printed board unit. Note that FIG.
(A) shows an example of the parts inventory data. The component stock data in this example includes a component drawing number, an identification code of a reel member storing the component, and the number of components in the reel held by the reel member.

The bar code reader 34 reads an identification code provided on a reel member. The display unit 35 displays necessary items for instructing a worker to perform a work in a timely manner in the component shortage prediction system 30. The mounters 36a, 36b and 36c are for setting a reel member for storing chip components on a jig and mounting predetermined components on a printed board. Detectors 37a, 37b, 37c
Detects that the mounting of components on the printed board is completed by the mounters 36a, 36b and 36c.

The production result counting section 33 uses the information from the detection sections 37a, 37b, and 37c to keep track of the production results of the printed board units for each printed board unit when the same type of printed board unit is continuously produced. Is counted.

The arithmetic processing unit 32 calculates the consumption of parts each time one printed board unit is produced while continuing to produce the printed board units, based on the input from the production result counting unit 33, The data of the reel member registered in the register 31 is updated. It should be noted that mount information, which is a unit use unit required for producing one printed board unit shown in FIG. 3B, is set in advance, and based on a value obtained by multiplying this mount information by the number of actual production sheets. The number of parts in the reel held by the reel member in the parts inventory data described above is subtracted.

That is, the component consumption is obtained by the following equation.・ Parts consumption = Unit consumption of printed board unit production ×
Actual production quantity For example, when one printed circuit board unit is produced from the parts inventory data shown in FIG. 3A, based on the mount information shown in FIG. 3B, as shown in FIG. This is to change the number of components in the reel held by the reel member.

The arithmetic processing unit 32 calculates the component consumption amount in the same manner as described above based on the input from the production result counting unit 33, and determines the replenishment time of the component by using the display unit 35 for one printed board unit. It is displayed every time a product is produced. As shown in FIG. 4A, the replacement time of the parts can be displayed, for example, by arranging the scheduled replacement times in ascending order of time.

Further, each time a printed circuit board unit of the same model is completed one by one, the time is compared with the time of the original production plan, and if it is late, the time for the next part is corrected by adding the time for the delay. Can also. Further, each of the mounters 36a, 36 for producing the same type of printed board unit.
If the trouble is stopped due to the factors b and 36c, the time at which the next part is cut can be corrected in addition to the time during which the trouble is stopped.

As shown in FIG. 4B, when the time at which the next part is cut is corrected, as shown in FIG.
a) If the replacement of the reel member that stores the component has a delay of 20 minutes in production time, including a trouble stop due to the mounter's own factor, store the bb component to be replaced next in the same machine 1. The scheduled replacement time of the reel member to be replaced can be displayed 20 minutes later than the original time.

In the component replenishment operation, the bar code reader 34 reads the identification code of the reel member to be replaced because the component is empty and the reel member to be supplied. The component information of the reel member is read into the arithmetic processing unit 32. The arithmetic processing unit 32 checks whether or not the refilled reel member is a correct part, and updates the data of each reel member registered in the parts inventory database 31. Further, by confirming that the reel member to be replenished has been attached to the mounter, the component replenishing operation is completed with respect to the present system.

The component out-of-stock prediction system 30 having the configuration shown in FIG. 2 immediately updates the component stock quantity every time one printed circuit board unit is produced, and notifies the operator of a component replenishment time. is there. Further, each time one printed circuit board unit is produced, the time at which parts are cut due to a delay in production, including the time during which a trouble is stopped due to the machine itself, is corrected. As a result, the maintenance work of the parts inventory quantity is reduced, and the parts inventory quantity can be grasped with high accuracy. It is possible to notify a high component exhaustion time. In addition, the system can be substituted by reading the identification code of the reel member to be replaced and the identification code of the reel member to be supplied, which complete the component replenishment work in the normal replacement work in the present system.

Now, a processing procedure of the component shortage prediction system according to the embodiment of the present invention in the production of a printed board unit will be described with reference to FIG. In addition, the code | symbol is based on FIG.

In step S01, the arithmetic processing unit 32
Notifies the operator of the part exhaustion and the replenishment time at each mounter where the operation has been started. For example, the display unit 35 displays on which line which part needs to be replenished and at what time.

In step S02, the operator prepares a part to be replenished in a jig before the occurrence of part exhaustion.

In step S03, the production result counting unit 33 counts the production result of the printed board unit for each sheet in response to a notification from the detection unit that detects that the work has been sequentially completed by each mounter.

In step S04, the arithmetic processing unit 32
Calculates the component consumption every time one printed board unit is produced, subtracts and updates the data for each reel member registered in the component inventory database 31. That is,
Update by subtracting the number of parts in the reel.

In step S05, the arithmetic processing unit 32
Determines whether or not the component exhaustion replenishment time has been reached for each mounter. If the time has reached the component replenishment time, the process proceeds to step S06. If it is not time to replenish the parts, step S
Return to 01.

In step S06, the operator immediately replenishes parts when the mounter stops due to lack of parts.
At this time, the bar code reader 34 reads the identification code of the reel member to be replaced when the component becomes empty and the identification code of the reel member to be supplied, and reads the component information of the replacement reel member and the component information of the refill reel member. It is read into the arithmetic processing unit 32.

In step S07, the arithmetic processing unit 32
Notifies the component inventory database 31 of the identification code of the reel member to be replenished, and registers the component information in the component inventory database 31. Further, the identification code of the reel member to be replaced is notified to the parts inventory database 31 and the parts information registered in the parts inventory database 31 is discarded. Each time one printed board unit is produced, the number of components in the reel registered in the component inventory database 31 is subtracted and updated.

In step S08, the arithmetic processing unit 32
According to the notification from the production result counting unit 33, the production result of the printed board unit is counted for each sheet, and it is confirmed whether or not there is a delay in the production plan.
Take appropriate action if there is a delay.

In step S09, it is determined whether the production is completed. If the production is not completed, the process returns to step S01.
If the production is completed, the processing is terminated.

[0050]

As described above, according to the present invention, the following effects can be expected.

Updating of the parts inventory quantity is performed immediately for each minimum unit of the printed board unit production quantity, so that maintenance work of the parts inventory quantity can be reduced. Also,
The parts inventory quantity can be grasped with high accuracy.

Furthermore, since the replenishment time is notified to the operator in sequence for each minimum unit of the production quantity of the printed board unit, the preparation for replenishment of the parts can be facilitated before the parts run out.

Further, in response to a delay in production of a printed circuit board unit, the time at which a part is cut can be corrected every time one printed circuit board unit is produced.

Further, in response to a delay in the production of a printed circuit board unit, the time at which a part is cut is corrected, including the time at which a trouble is stopped due to the equipment itself. can do.

Further, as means for processing the completion of the part replacement operation, an identification code of a reel member to be replaced when the part being replaced in the normal replacement operation becomes empty,
By reading the identification code of the reel member to be supplied by the reading means, the special operation is not required. Further, it is possible to confirm whether or not the supplied reel member is a correct part with respect to the present system. Further, by updating the data of each reel member registered in the parts inventory database, a replacement record can be obtained. further,
It can be confirmed that the reel member to be refilled is attached to the equipment.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of the present invention.

FIG. 2 is a configuration diagram of an embodiment of the present invention.

FIG. 3 is an explanatory diagram of an embodiment of the present invention.

FIG. 4 is an explanatory diagram of an embodiment of the present invention.

FIG. 5 is a flowchart of an embodiment of the present invention.

[Explanation of symbols]

 1: Component exhaustion prediction system 10: Component inventory database 11: Result collection means 12: Detection means 13: Reading means 14: Notification means 15a to 15c: Equipment

Claims (5)

[Claims] 1. A parts inventory database (10) in which parts constituting a printed board unit and a required number thereof and a total amount of reel members necessary for the same are registered in advance when a printed board unit of the same model is continuously produced. A result collection unit (11) for updating data of each reel member registered in the parts inventory database (10) for each minimum unit of the printed board unit production quantity when the printed board unit is continuously produced. Prediction system for running out of parts in the same model production. 2. The results collection means (11) calculates the consumption of parts based on information from the detection means (12) for detecting the production results when continuing to produce the same type of printed circuit board unit, and replenishes the parts. 2. The system according to claim 1, further comprising a function of notifying the timing in order by a notifying unit. 3. The result collecting means (11) compares the time of the original production plan each time a printed circuit board unit of the same model is completed one by one, and adds the time of the delay if it is late, and 3. The system according to claim 1, further comprising a function of correcting a time at which the part is cut. 4. The trouble collecting means (11) corrects the time when the next part is cut off in addition to the time when the trouble is stopped due to the factor of the equipment for producing the same type of printed circuit board unit itself. 4. The system according to claim 3, wherein the system has a function. 5. The result collecting means (11) comprises: an identification code of a reel member to be replaced when the part read by the reading means (13) is empty; and an identification code of a reel member to be supplied. 2. The system according to claim 1, further comprising a function of executing a replenishment work completion process.