JPH04203935A - Monitoring apparatus for operation of equipment - Google Patents

Abstract

PURPOSE:To improve the producing efficiency by predicting the finishing time of the work, obtaining the staring time of a preparatory work necessary for the next work, and indicating the preparatory work at the starting time. CONSTITUTION:The NC data and data for arranging components necessary to operate an equipment 1 are formed by a data forming machine 6, and retained in a line management station 7. The station 7 supplies the necessary NC data and the component arranging data to a cell management station 9 in accordance with the working data. The data are temporarily retained in the station 9. The station 9 feeds the NC data to the equipment 1 while monitoring the proceeding state of the work of the equipment 1, and generates an indication to arrange the components to the operator based on the component arranging data at the exchanging time of lots. At the same time, the station 9 orders a preparation of components necessary for the arrangement so as to set the components immediately to the equipment 1. In this manner, the arrangement work can be started immediately.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an equipment operation monitoring device that monitors the operating status of equipment and the operating status of a line composed of a plurality of pieces of equipment.

[Conventional technology]

With the diversification of products and shorter life cycles.

The workpieces handled at production sites are becoming increasingly diverse, and the lot sizes produced are becoming smaller.As a result, the number of lots handled in a day is increasing, and as a result, the amount of setup work required to change lots has increased. There is.

The setup work has traditionally been carried out by Document Factory Automation, '89.8. As shown in "FA Example of Color TV Printed Circuit Board Mounting" in P, 39-43, work instructions are issued for each lot from the on-site terminal, and workers perform setup work according to these instructions. . Various information necessary for setup work can be immediately output by operating a site terminal, and setup preparation work such as preparing parts is left to the discretion of the operator.

[Problem to be solved by the invention]

The above-mentioned conventional technology does not take into consideration the setup preparation work necessary for the setup work to be performed on the equipment, and the operator estimates the time required for preparation from the setup details and performs the work. There was a problem in which it was necessary to decide when to start the setup preparation work while always being aware of the progress. Furthermore, if the setup preparation work is performed independently of the progress status of the two operations, there is a problem in that parts used in the setup are not delivered to the site.

An object of the present invention is to smoothly perform setup work at the time of lot changeover, and further, to instruct necessary setup preparation work at an appropriate time.

[Means to solve the problem]

In order to achieve the above objectives, the current work progress,
Equipment condition and past work performance.

A method for predicting the end time of the work currently being performed (lot) based on failure recovery records, a means for comparing the currently being performed work with the next work and determining the setup work and its preparatory work. Equipment operation monitoring includes a means for predicting the time required to perform the set-up preparation work, a means for determining the start time of the set-up preparation work from the predicted end time of the work and the predicted time of the set-up preparation work, and a means for instructing the set-up preparation work at that time. Provided in the device.

In addition, work results (the actual time taken to perform the work) are used to predict the work completion time and setup preparation work time.
, failure recovery record (when equipment breaks down).

The equipment operation monitoring device is provided with a means for updating the actual time taken for one set-up preparation work (the time actually taken for the set-up preparation work) at the end of the work, failure recovery, and completion of the set-up preparation work.

[Effect]

A means of predicting the end time of the work currently being carried out is
Calculate the remaining work amount from the current work progress, and calculate the amount of work (
If the equipment is out of order, the end time of the work currently being carried out is predicted using the track record of recovery from the outage. The means for determining setup work and its preparation work is to compare the parts used in the current work and their positions set in the equipment, and the parts used in the next work and their positions set in the equipment. Calculate setup work from the remaining amount of parts. In addition, the setup preparation work is determined from the comparison between the parts used in the current work and the parts to be used in the next work, and the remaining amount of parts.

The method of predicting the time required to perform setup preparation work is based on past setup preparation work time records.
For the setup preparation work obtained above, the preparation work time is predicted. The means for instructing the setup preparation work determines the start time of the setup preparation work based on the expected work end time determined by the means for predicting the end time of the work and the estimated preparation work time determined by the means for predicting the time required to perform the setup preparation work. Seek.

At that time, the setup preparation work determined above is instructed. Further, the work performance and failure recovery performance 1 setup preparation work time performance are updated by means for updating these at the time of work completion, failure recovery, and setup preparation work completion.

As a result of the above actions, by starting the setup preparation work according to the instructions for the setup preparation work, the setup preparation work is completed when the setup work due to lot change starts.
It is possible to start the setup work immediately, and production efficiency can be improved.

〔Example〕

An embodiment of the present invention will be described below. FIG. 2 shows the system configuration of a line management system in a printed board assembly line for mounting parts on printed boards. Equipment 1 such as a loader, dispenser, mounter, etc. is arranged according to the printed board manufacturing process, and performs assembly work on printed boards 3 flowing on a line 2. To operate Equipment 1, NC data that defines the movement of the ill, and parts setup data that defines the parts used in Equipment 1 and where to set them are required, and NC data that is used every time the lot changes. or parts setup data to the corresponding one. The NC data and parts setup data necessary to operate equipment 1 are CAD data from CAD system 4.
It is created based on the data at the CAM station 5 or by the data creation machine 6, and is stored at the line management station 7. The line management station 7 supplies necessary NC data and parts setup data to the cell management station 9, which is an equipment operation monitoring device, according to the one-work needle drawing data 8, and temporarily stores them at the cell management station 9. The cell management station 9 monitors the work progress of the equipment 1, supplies NC data to the equipment 1 in advance, and also instructs workers to set up parts based on the 1 part setup data when changing lots. issue. Furthermore, in order to be able to set the parts in the equipment 1 immediately when the parts setup instruction is issued, a parts setup preparation instruction is given in advance to instruct the preparation of parts necessary for the parts setup.

FIG. 1 shows the internal processing configuration of a cell management station 9, which is an equipment operation monitoring device.

The line management station communication unit 10 transmits and receives data to and from the line management station 7. As shown in FIG. 3, the work plan 14 includes a work day 14-a for assembling printed boards, a work 114-b on the work day, a type of board to be worked on 14-c, and a planned number of sheets to be produced 14-d.
It consists of As shown in FIG. 4, the parts setup data 11 includes the types of parts 11- and the number of parts 11-c necessary to create the scheduled number of printed boards shown in the work plan 14, and the lane No. 11 to be set in the equipment 1. -a, and exists for each set of equipment and board type. The component setup data 11 is supplied from the line management station 7 by the line management station communication unit 10,
It is managed by the parts setup data management section 12. Work record 1
5 has the printed board results shown in FIG. 5(a) and the used parts results shown in FIG. 5(b). The printed board results are ``Work date 15-a2 Work order 15 of the printed board where work was actually performed.
-b, actual number of sheets worked with board type 15-c 15-
d, the working time 15-e taken for the task, and the work status 15-f indicating whether the task is in progress or completed. The results of parts used include the type of parts actually used 15-h, the number of parts used 15-1, the lane number on the equipment, 15-h
g, and exists for each set of equipment and board type. The setup work/setup preparation work extraction unit 13 calculates the next work from the work plan 14 registered in advance and the number of parts used from the work record 15, and calculates the parts used in the work currently being performed and the cents for the equipment 1. The setup work is determined from the comparison of the position of the part to be used in the next work, the position of the part to be set in the equipment 1, and the remaining amount of parts.

Further, the setup preparation work is determined from the comparison between the parts used in the current work and the parts to be used in the next work, and the remaining amount of parts. Setup preparation work time prediction unit 16
predicts the time required for the setup preparation work obtained by the setup work/setup preparation work extraction unit 13 based on the setup preparation work time record 18 managed by the setup preparation work time record management unit T7. As shown in FIG. 6, the setup preparation work time record 18 is calculated by the total preparation work time 18-a, which is the total time required for each setup preparation work, and the setup preparation work. The total number of parts is 18-b, which is the total number of parts provided. The setup preparation work time record 18 calculates the actual time taken by the setup preparation work time record management unit 17 by inputting the fact that the setup preparation work has been completed using a keyboard, etc., and calculates the total number of parts. will be updated with. The equipment communication unit I9 sends and receives data to and from the equipment [1]. The work progress monitoring unit 20
Installation! Regarding the work being done in 1, the number of printed circuit boards completed and the number of parts used are received from the equipment 1 through the equipment communication section 19, and the work results 1 are recorded along with the time taken for the work.
5 in the work record management section 21. The equipment status monitoring unit 22 monitors the status of the equipment 1 using the equipment communication unit 19, measures the time until failure recovery when the equipment 1 is out of order, and sends it to the failure recovery record management unit as a failure recovery record 23 along with the cause of the failure. Register on 24th. As shown in FIG. 7, the failure recovery record 23 includes the failure cause 23-a, the number of failures 23-b,
Total recovery time 2, which is the total time it took to recover
It consists of 3-C and exists for each facility. Number of failures 23
-b.

The total return time 23-c is updated by the equipment status monitoring unit 22. The work end time prediction unit 25 calculates the remaining work amount from the 1 work amount picture 14 and the current work record 15, and according to the current state of the equipment 1 from the equipment state monitoring unit 22,
If equipment 1 is operating normally, past work record 15
Based on , if equipment 1 is out of order.

The failure recovery record 23 is also used to predict the end time of the work currently being performed. The setup preparation work instruction section 26 starts the setup preparation work from the expected end time of the currently being performed work determined by the work end time prediction section 25 and the expected setup preparation work time determined by the setup preparation work time prediction section 16. The time is determined, and at that time, the setup preparation work determined by the first setup work/setup preparation work extraction unit 13 is instructed to the operator by display or print.

At the same time, the setup preparation work time record management section 17 is informed that the setup preparation work has started and the number of parts to be prepared.

The processing flow for predicting the work end time will be explained according to the steps shown in FIG.

Step 1: Calculate the remaining work amount of the lot for the printed board of the lot currently being worked on. In other words, the remaining number of sheets is calculated from the planned number of sheets in the work plan and the actual number of sheets at the present time in the work results. According to the work plan shown in FIG. 3, if work is currently being done on the board type "DEF-5678" as shown in FIG. 5, the remaining work amount is 150 sheets.

Step 2: Predict the time required for the remaining work determined in step 1. The prediction method is 1. For example, the actual number of sheets of the board type "DEF-5678" currently being worked on in Figure 5 is 15.
-d and the working time it took 15-e to find the average working time per sheet (3 minutes), and from the remaining work amount (150 sheets) found in step 1, calculate the time required for the remaining work (450 minutes). demand. Other methods include a method using a constant given in advance as the average working time per sheet, and a method using a working time of 1
There is a method in which the failure time of equipment 1 is not included in 5-e, and the calculation is performed in the same way as above, assuming that there will be no failure in the future.

Step 3: Check the status of equipment 1. Equipment status monitoring section 2
2, the status of the equipment f11 is checked, and if the equipment is operating normally, the process goes to step 4; if the equipment is out of order, the process goes to step 5.

Step 4: Predict the end time of the lot currently being worked on. Time required for remaining work determined in step 2 (450 minutes)
If the equipment status in step 3 is in normal operation, 450 minutes from now, or in case of failure.

The work end time is set to be 450 minutes after the failure recovery time determined in step 5.

Step 5: When equipment 1 is out of order, predict the time when the outage will be recovered. The cause of the failure is determined from the equipment status monitoring unit 22, and a matching record is determined from the cause of failure 23-a in FIG. From the number of failures 23-b and total recovery time 23-c of the record, calculate the average recovery time per failure,
The time after the average recovery time is set as the recovery time.

FIG. 9 is a processing flow of one-stage work extraction processing.

Step 1: Find the work currently being done from the work record 15, and find the next work from the work plan 14.

Step 2: Compare the parts setup data 11 of the work currently being performed with the parts setup data 11 of the next work. The parts types 11-a are compared for each lane No. 11-a, and among the parts setup data 11 for the next work, records with different parts types 11-b are set as data for the setup work.

Step 3: For lanes with the same component type 11-b,
@ From the number of parts before starting the current work, the number of used parts 15-i of work record 15, the actual number 15-d, and the planned number of parts 14-d of work plan 14, calculate the number of parts when the current work is completed. The remaining number is predicted, and if the remaining number is less than the number 11-C to be used in the same lane in the next operation, the corresponding record of the parts setup data 11 for the next operation is set as the data for the setup operation.

FIG. 1O is a processing flow of the setup preparation work extraction process.

Step 1: Find the work currently being done from the work record 15, and find the next work from the work plan 14.

Step 2: Compare the parts setup data 11 of the work currently being performed with the parts setup data 11 of the next work. The part types 11-b are compared, and the record of the part type 11-b, which is not included in the part type of the work currently being performed, among the part setup data 11 of the work to be performed next, is set as the data of the setup preparation work.

Step 3: For the part type 11-b of the current work that has the same part type as the next work, the number of parts before starting the current work and the number of used parts 15- in the work record 15.
i, actual number of sheets 15-d and planned number of sheets of work plan 14 1
From 4-d, predict the number of parts remaining when the current work is completed, and the remaining number is 1, the number of parts of the same type 11-b in the next work.
If it is less than 1-〇, parts setup data 1 for the next operation
The relevant record of No. 1 is used as the data for the setup preparation work.

FIG. 11 is a processing flow of the setup preparation work time prediction process.

Step 1: The setup work/setup preparation work extraction unit 13 calculates the number of parts to be handled in the setup preparation work.

Step 2: Obtain the preparation work time per part from the total preparation work time leap 18-a and the number of edge parts 18-b of the setup preparation work time record 18.

Step 3 From the number of parts obtained in step 1 and the preparation time per part obtained in step 2, calculate the time required for setup preparation work.

Note that the work finish time prediction method, 2-setup work extraction method, 2-setup preparation work time record, and 2-setup preparation work time prediction method shown above are only one method for realizing this, and other methods may be used.

According to this embodiment, by starting the setup preparation work in accordance with the instructions for the setup $ preparation work, the setup preparation work is completed when the setup work due to lot switching starts, and the setup work can be started immediately, improving production efficiency. can be improved.

〔Effect of the invention〕

According to the present invention, at the start of the setup work due to lot changeover, the setup preparation work is instructed so that the setup work can be started immediately, so the setup work can be started smoothly, which is effective in improving production efficiency. There is.

This is particularly effective when the setup preparation work takes a long time.

Further, since the parts used in the setup work are immediately set in the equipment without remaining at the site, it is effective in reducing the number of parts in progress at the site and the inventory of parts.

In addition, when parts are supplied by an automatic parts supply device,
Until now, the trigger for starting supply was an instruction to start setup work due to lot switching, but in the present invention,
This can be done in accordance with instructions for setup work, and when used in combination with an automatic parts supply device, it also has the effect of improving production efficiency.

[Brief explanation of the drawing]

FIG. 1 is an internal processing configuration diagram of the equipment operation monitoring device. FIG. 2 is an overall configuration diagram of a printed board assembly line management system that is an embodiment of the present invention, FIG. 3 is a diagram showing an example of a work plan, and FIG. 4 is a diagram showing an example of one-part setup data. ,
Figure 5 is a diagram showing an example of work results, Figure 6 is a diagram showing an example of one setup preparation work time record, Figure 7 is a diagram showing an example of failure recovery record, and Figure 8 is a diagram showing an example of work completion time. The time prediction processing flow, FIG. 9 is the setup work extraction processing flow, and FIG. 10 is the
Setup Preparation Work Extraction Processing Flow FIG. 11 is a setup preparation work time prediction processing flow. 9...Equipment operation monitoring device, 11...Parts setup data. 13...Setup work/Setup 11! Preparation work drawing room. 14...Work plan, 15...Work results. 16... Setup preparation work time prediction section. 18... Record of setup preparation work time. 23... Failure recovery record, 25... Work end time prediction unit. 26... Setup preparation work instruction section. Collection I Design 2 Figure 3 Figure collection 4.7 Collection 5 Box Figure 6 Figure 7 Figure 88 Leap calculation 9 Figure

Claims (1)

[Claims] 1. An equipment operation monitoring device that predicts the end time of the work currently being performed based on the current work progress, equipment status, past work results, and failure recovery results. An equipment operation monitoring device characterized in that, from the predicted end time, the start time of preparation work for the setup necessary for the next work is determined, and the setup preparation is instructed at the start time. 2. It is an equipment operation monitoring device that accumulates the results of work and failures in the equipment, as well as the results of setup preparation work, and predicts the end time of the work currently being performed based on the results and the current status of operation monitoring. An equipment operation monitoring device characterized in that the equipment operation monitoring device determines the start time of the setup preparation work for the next work and instructs the setup preparation. 3. Equipment operation monitoring device that calculates the amount of remaining work from the progress of the work currently being performed, calculates the time required for the remaining amount of work from a predetermined average work time, and monitors the amount of work currently being performed. The equipment operation monitoring device according to claim 1, which predicts the end time of work. 4. An equipment operation monitoring device that calculates the amount of remaining work from the progress of the work currently being performed, calculates the time required for the remaining amount of work from the work time taken from the start of work, and The equipment operation monitoring device according to claim 1, which predicts the end time of the work being performed. 5. An equipment operation monitoring device that calculates the remaining work amount from the progress of the work currently being performed, and calculates the remaining work amount from the actual operating time excluding the equipment stoppage time from the start of work until now. 2. The equipment operation monitoring device according to claim 1, wherein the equipment operation monitoring device calculates the time required for the work and predicts the end time of the work currently being performed. 6. A method for instructing setup preparation and setup work, which is characterized by giving instructions only for items for which the setup for the next work is different from the current situation and requires changes, by considering the status of the current work. Instruction method for setup preparation and setup work. 7. A line management system, comprising a plurality of equipment operation monitoring devices according to claim 1 and a line management station that manages the entire line by sending and receiving data to and from these devices, and according to the flow of work on the line, A line management system characterized by displaying the expected completion time of each piece of equipment for the currently running lot and instructing each piece of equipment to prepare for the next lot. 8. An equipment operation monitoring device, comprising the equipment operation monitoring device according to claim 1 and a parts supply device to the equipment, and characterized in that the setup preparation instruction according to claim 1 is given to the parts supply device. equipment operation monitoring device.