JP2535637Y2 - Work instruction device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention relates to a work instruction device in a production line.
In particular, the present invention relates to a work instruction device capable of giving an appropriate work instruction to a worker in each work process.

2. Description of the Related Art Conventionally, a work instruction to an operator on an assembly line of a vehicle is attached to a vehicle with an instruction leaflet which is a symbolized and printed vehicle specification, and each operator performs a predetermined operation based on the vehicle specification. I was However, with the diversification of vehicle specifications in recent years, the number of instruction items required for work tends to increase, so the visibility of instruction leaflets and the ease of storage are pursued.
An instruction leaflet for each process in which instructions necessary for each worker are printed is employed.

FIG. 13 shows an example of the above-mentioned instruction leaflet, in which the work instruction for five persons (five processes) is given by this one instruction leaflet 1. Here, each instruction symbol 2 in one horizontal row of the instruction leaflet 1 indicates a work instruction for one person, and the numbers in a row indicate the operation procedure. FIG. 14 shows a system configuration for printing the instruction bill 1.
In the figure, an instruction computer 6 is connected to a host computer 5. The instruction computer 6 is connected to a plurality of readers 7 and a printer 8 arranged at the production site. Each reader 7 has a function of reading information stored in a storage medium (not shown) attached to a vehicle (not shown) and sending the information to the instruction computer 6. The instruction computer 6 receives information from the storage medium and prints work information corresponding to the vehicle on an instruction leaflet via the printer 8. The printing work on this instruction leaflet
It is performed for each same work area of the vehicle assembly line.

[Problem to be Solved by the Invention] However, the above-described instruction-by-process flyer occupies one line for the instruction of one worker, so the instruction flyer area per vehicle increases, and the paper cost and printing cost are increased. There was a problem that costs increased. In addition, since the instruction leaflets are attached to the vehicle by an operator, there has been a problem that the number of attachment steps increases.

The type of the product is detected by the recording medium attached to the work target, and the start and end of the work are input by a switch to detect the work time, and the load of each type of the work is grasped. The apparatus is disclosed in JP-A-61-286964. However, this apparatus does not have a function of giving a work instruction to an operator.

In addition, information such as work contents according to different models and specifications is stored in a computer in advance, the storage is output according to a vehicle moving on an assembly line, and the work contents are displayed on a television screen arranged at each work station. A display device is disclosed in JP-A-63-109930.
However, in the case of this device, work information is displayed on the television screen as the vehicle moves, so that information necessary for the next work cannot be displayed simultaneously with the end of the work. Therefore, it is not possible to obtain necessary information when needed, and it is easy for workers to be restricted by information on the TV screen,
The degree of freedom of the worker is small.

An object of the present invention is to provide a work instructing device that can eliminate the work instruction by instruction leaflets and obtain only necessary information for each worker when necessary, focusing on the above problem.

[Means for Solving the Problems] The work instructing device according to the present invention for achieving this object is as follows.

A storage medium detachably provided on a product flowing through the production line for storing external information, and a storage medium capable of outputting the stored information to the outside; and identifying the product to a storage medium provided on the product. Writing means for outputting data; reading means for reading identification data stored in the recording medium; production planning means for managing specifications for each product; and storing work contents in each work process for each product specification Work instruction storage means for outputting work instruction information in each work process based on the identification data from the recording medium read by the reading means, and a work instruction information from the work instruction means. Display means for displaying for each work process; after the work displayed on the display means has been completed, the work instruction contents of the display means are operated by the operator and the next work And a work completion input means for switching to the indicated contents, wherein the work instructing means, when the time from when the work instruction information is output in each work process to when the work completion signal is input is delayed with respect to the reference time. A work instruction device configured to obtain the number of delays and the cumulative delay time for each work process.

[Operation] In the work instructing apparatus configured as described above, the identification data (product number) is written by a writing unit on a recording medium detachably provided on a product flowing on the production line. The recording medium with the product number written on the recording medium,
The product number conveyed with the product and stored in the recording medium at a predetermined position is read by the reading means. When the product number is read, work information necessary for each process is determined based on the product number. In other words, the work instruction means includes
The specifications for each product and the work procedure for all work processes are entered, and when the product number is entered in the work instruction means, the type of work required in which process is required. Output by means.

The work instruction information from the work instruction means is displayed to the operator via display means arranged for each work process. The worker performs a predetermined work according to the work instruction information displayed on the display means. When the work by the worker is completed,
The work completion input means is operated by the operator, and the display on the display means is switched to the next work instruction content.

As described above, since the work information is provided to the worker by the display means for displaying the work instruction information from the work instruction means, the work of pasting the instruction leaflet as in the related art becomes unnecessary, and the production is not performed. Printing on the line becomes unnecessary. Also, when the work by the worker is completed,
The next work instruction content can be displayed according to the worker's will, so that necessary information can be reliably obtained when necessary, and the degree of freedom of the worker's work is increased.

The work instructing means calculates the number of delays when the time from the output of the work instruction information in each work process to the input of the work completion signal is delayed with respect to the reference time and the accumulation of the delay time for each process. In addition to being able to switch the contents of the work instruction information according to the situation of the worker's work, it is possible to evaluate the work load in each process, A review of the process can be performed.

Hereinafter, a preferred embodiment of the work instruction device according to the present invention will be described with reference to the drawings.

1 to 12 show an embodiment of the present invention. In FIG. 1, reference numeral 11 denotes a vehicle assembly line as a production line. In the assembly line 11, a vehicle 12 as a product is transferred by a transfer device such as a conveyor (not shown). The vehicles 12 on the assembly line 11 are produced based on a production plan of a production planning means 13 described later. The production planning means 13 is composed of a production planning computer, and has a function of drafting a vehicle production plan within a certain period and managing vehicle specifications for each production vehicle. The work instructing means 14 is connected to the production planning means 13 via a communication line 20. The work instruction means 14 is constituted by a work instruction computer. Work instruction means
A console 15 is connected to 14 as work procedure input means, and a disk 16 as a work content storage unit.

The writing means 17 and the reading means 18 are connected to the work instruction means 14 via a network 21. The writing means 17 has a function of outputting identification data (vehicle number) unique to the vehicle 12 to a recording medium 19 detachably provided to each vehicle 12 flowing through the assembly line 11. The recording medium 19 is composed of an ID tag (a kind of memory card), and has a function of storing information from the outside and outputting the stored information to the outside. Reading means 18
Has a function of reading the vehicle number stored in the recording medium 19.

The work instructing means 14 includes the production vehicle 1
Vehicle specification information for each vehicle is entered and the console
The work procedures of all work processes are input via 15. These pieces of information are stored in the above-described disk 16. The work instruction means 14 has a function of outputting work instruction information in each work process (each work station) based on the vehicle number from the recording medium 19 read by the reading means 18.

A plurality of instruction terminals 31 are connected to the work instruction means 14 via a network 21, and each instruction terminal 31 is arranged for each operation step. The instruction terminal 31, as shown in FIG.
(Central processing unit) 33, display means 34, work delay alarm 3
5. Work completion input means 36. CPU33
Is connected to the network 21 via the network interface 32. The network interface 32 is connected to the work instruction means 14 and the CPU 3 via the network 21.
It has a function to send and receive signals to and from A display means 34, a work delay alarm 35, and a work completion input means 36 are connected to the CPU 33, and the CPU 33 outputs information to that effect to the display means 34 and the work delay alarm 35 based on the information from the work instruction means 14. It has a function to do.

The display means 34 has a function of displaying the work instruction information output from the work instruction means 14, and the content of the display is switched to the next work instruction content by the operation of the work completion input means 36 by the operator. It has become. The operation of the work completion input means 36 is performed when the worker finishes the work displayed on the display means 34. In this embodiment, the work completion input means 36 is constituted by a push button switch. The work delay alarm 35 has a function of outputting a work delay alarm based on a command from the CPU 33 when the work is not completed within a predetermined time, that is, when the work completion input means 36 is not operated by the predetermined time. Have.

As described above, the CPU 33 monitors the time from the switching of the work instruction to the completion of the work, and compares the monitored time with a preset reference time.
Then, the CPU 33 has a function of turning on the work delay alarm 35 if a work delay occurs, and transmitting the process in which the work delay has occurred, the vehicle number, and the work delay time to the work instruction means 14. . The work instructing means 14 has a function of accumulating information on the work delay and outputting, according to a tally command from the console 15, in which process and how much production of a vehicle is delayed with respect to the reference time. . Thus, it is possible to determine whether or not the setting of each work content is reasonable, and it is possible to organize an optimum work procedure.

Next, the operation of the work instruction computer constituting the work instruction means 14 will be described with reference to flowcharts and the like.

FIG. 4 shows a normal processing procedure of the work instruction means 14. First, the process is started in step 101, and proceeds to step 102, where the vehicle number of the vehicle 12 flowing on the assembly line 11 is read. When the vehicle number is read, step 10
Proceeding to 3, the specification information corresponding to the vehicle number is determined from the vehicle information file 110 shown in FIG.

Here, the vehicle information file 110 shown in FIG. The disk 16 further stores a work procedure file 111, a part number table 112, and a work time table 113 input from the production planning means 13 and the console 15. Fig. 6 shows work procedure file 1
This file indicates the number (for example, network address) 111a of the instruction terminal 31 attached to each process.
And a part number 111b corresponding to each operation.
The part number 111b and the storage position of the corresponding instruction symbol in the vehicle specification information correspond to the part number table 112 shown in FIG.
Is associated with. Part number table 112
Has a part name 112a corresponding to each part number and information indicating how many digits 112b to how many digits 112c of the vehicle specification information are stored.

When the specification information corresponding to the vehicle number is determined in step 103, the process proceeds to step 104, where a reference operation time required in each operation process is created. That is, the reference work time is retrieved from the work time table 113 shown in FIG. 8 based on the work process and the vehicle type. Working time table 113,
Each work process has a reference time 113a required for each vehicle type, a work delay count 113b, and a work delay accumulated time 113c.

When the reference work time is retrieved in step 104, the process proceeds to step 105, where the reference time 113a and the component information are converted into the instruction terminal 31 of each work process by the format 114 shown in FIG.
And the process ends in step 106.

Next, the processing procedure of the CPU 33 in the instruction terminal 31 will be described as a first procedure.
This will be described with reference to the flowchart of FIG.

When the worker finishes the work of assembling a specific vehicle on the assembly line 11, the work completion input means 36 of the instruction terminal 31 is turned on by the worker before the work of assembling the vehicle that flows next. . When the process is started in Step 201, Step 202
In, it is determined whether or not a work completion signal has been input from the work completion input means. Then, here, it is determined whether or not the immediately preceding operation of the vehicle was delayed. The process for determining the work delay will be described later. If a work delay has occurred in step 202,
Proceed to step 203 and the work delay alarm is activated (lit)
It is determined whether it is inside. If the work delay alarm is active, the process proceeds to step 204, where the work delay alarm is turned off. If it is determined in step 203 that the work delay alarm is not activated, the process proceeds to step 206.

When the work delay alarm is turned off in step 204, the process proceeds to step 205, where the vehicle number and the work delay time are uploaded to the work instruction means 14. Here, the work delay time refers to the difference between the start of the work of the preceding vehicle, that is, the time from the completion of the work of the vehicle before the previous vehicle to the completion of the work of the preceding vehicle, and the reference time. The operation process of the work instruction means 14 receiving this information will be described later.

When each piece of information is uploaded to the work instruction means 14, the process proceeds to step 206, and the vehicle information file 110 is shifted regardless of whether or not the work delay of the preceding vehicle has occurred. The vehicle information file 110 is a file in which the vehicle information received from the work instructing means 14 is sequentially stored as described in FIG. When the vehicle information file 110 is shifted, the process proceeds to step 207, where the work instruction information output from the work instruction means 14 is displayed on the display means 34.

FIG. 3 shows a layout of the work instruction information displayed on the display means. As shown in the figure, a vehicle number 220a is displayed at the upper left of the screen, and a work procedure 220b, a part name 220c, and a symbol 220d corresponding to the part name are displayed below the vehicle number 220a. The worker in each step performs a predetermined work based on the work instruction information displayed on the display means 34, and after the work is completed, the work completion input means 36 is turned on by the worker.

When the work completion input means 36 is turned on, step 208
The reference time set in the vehicle information is set as an initial value, and the work time monitoring timer 33a programmed in the CPU 33 is started. When the work time monitoring timer 33a times out in step 208, the process returns to step 202 again, and the above processing is performed.

If it is determined in step 202 that the work completion signal has not been input, the process proceeds to step 209,
It is determined whether or not the work time monitoring timer 33a has timed out. If it is determined that the time has not elapsed, the process returns to step 202. In step 209,
If it is determined that the time is up, step 21
Go to 0. In step 210, the operation delay alarm 35 is activated to output an alarm indicating that the operation is delayed, and thereafter, the process returns to step 202, and the above-described processing is performed.

Thus, the work completion signal is not input during the work of the worker, and the work time is monitored by the work time monitoring timer 33a. Then, after the work is completed, the work delay is determined based on the input of the work completion signal from the work completion input means 36, and in the case of the work delay, the timer set by the reference time expires, and the work delay alarm is generated. 35 lights up. After that, the work time monitoring timer 33a is operated, and the work delay time is continuously measured.

FIG. 11 shows a processing procedure of the work instructing means when the work delay information is received from the instruction terminal.

When the process is started in step 301 and the work delay information is received in step 302, the process proceeds to step 303, where the work instruction means 14 uses the vehicle number from the instruction terminal device 31 to execute the vehicle specification information file 110 shown in FIG. To search for the type of the vehicle. Next, proceeding to step 304, the process procedure file is reversely searched from the work procedure file using the number of the instruction terminal 31 as a key to determine in which process the work delay has occurred, and the process and vehicle type of the work time table 113 shown in FIG. Ask. That is, in step 304, the corresponding record of the work time table is searched from the process and the vehicle type in which the work delay has occurred. When the search for the record is completed, the process proceeds to step 305, where 1 is added to the number of work delays of the record. Further, the process proceeds to step 306, where the work delay time generated this time is added to the work delay accumulated time, and the process ends in step 307.

In this way, it is possible to ascertain the number of work delays that have occurred for each vehicle type in each process and the accumulated time.

FIG. 12 shows the operation processing means of the work instructing means accompanying the console operation. In particular, a description will be given of a work instruction change when a process change occurs and an analysis of a work delay.

The process is started in step 401, and the console 15 is started in step 402. As described above, the console 15 has a function of inputting the operation procedures of all the operation steps of the assembly line 11 to the operation instruction means 14, and the information input is performed via the keyboard of the console 15. When the console 15 is activated, the process proceeds to step 403, where the work instruction means 14 determines whether or not a process change has been input. If it is determined that there is a process change information input, the process proceeds to step 404, where a work procedure is input based on the work procedure file shown in FIG. When the input of the work procedure is completed, the process proceeds to step 405, and the work procedure file 111 is updated. Then, in step 406,
The part name corresponding to the part number in the work procedure file 111 is searched from the part number table 112 in FIG. 7, and the information is transmitted to the instruction terminal 31. After that, the process proceeds to step 409, and the input process of the work instruction accompanying the process change ends.

If it is determined in step 403 that a process change has not been input, the process proceeds to step 407, and it is determined whether or not work delays have been counted.
If the work delay has not been counted, the process proceeds to step 409, and the process ends. If it is determined in step 407 that the work delays have been counted, the process proceeds to step 408, where the number of work delays and the average time for each work process are displayed on the CRT (CRT) of the console 15. Here, the average work delay time = the cumulative work delay time / the number of work delays.

In this way, by summing up the average work delay times, it is easy to set the reference time and to change the work procedure. Conventionally, the working time of the worker in each process was set empirically, so that it took a lot of time to find the optimal process organization, but as in this embodiment,
Since the difference between the actual work time and the reference time can be accurately grasped, the accuracy in the process composition is improved, and the optimum work procedure can be set in a short time.

[Effects of the Invention] As described above, when the work instruction device according to the present invention is used, the product number is stored in the recording medium attached to the product flowing through the production line, and the product number stored in the recording medium is read. By this, the work instruction information for the product number is displayed by the display means arranged for each work process, and is displayed by the signal from the work completion input means operated by the operator after the work displayed on the display means is completed. Since the work instruction content of the means is switched to the next work instruction content, necessary information can be reliably obtained when necessary, and it is possible to sufficiently cope with diversification of products. In addition, the degree of freedom of the worker's work can be increased as compared with the case of the related art in which the display contents are changed according to the movement of the product.

Further, since the change information of the work procedure can be input through the work procedure input means, and the changed work instruction information can be displayed in each work process through the display means,
It is possible to flexibly respond to process changes.

The work instructing means calculates the number of delays when the time from the output of the work instruction information in each work process to the input of the work completion signal is delayed with respect to the reference time and the accumulation of the delay time for each process. In addition to being able to switch the contents of the work instruction information according to the situation of the worker's work, it is possible to evaluate the work load in each process, Review, etc. can be considered.

[Brief description of the drawings]

1 is a schematic system diagram of a work instruction device according to the present invention, FIG. 2 is a schematic configuration diagram of an instruction terminal device in the device of FIG. 1, and FIG. 3 is work instruction information on display means of the device of FIG. FIG. 4 is a flowchart showing a normal information processing procedure in the work instructing means of the apparatus of FIG. 1, and FIG. 5 is a conceptual view of a vehicle specification information file stored on a disk of the apparatus of FIG. FIG. 6 is a conceptual view of a work procedure file stored on the disk of the apparatus of FIG. 1, FIG. 7 is a conceptual view of a part number table stored on the disk of the apparatus of FIG. FIG. 9 is a conceptual diagram of a work time table stored in a disk of the device of FIG. 1, FIG. 9 is a conceptual diagram of a format of vehicle information transmitted from a work instruction means of the device of FIG. 1 to an instruction terminal, FIG. The figure shows the pointing terminal of the device of FIG. 11 is a flowchart showing information processing procedures in the work instruction means of the apparatus of FIG. 1, and FIG. 12 is a flow chart showing steps of processing change information in the work instruction means of the apparatus of FIG. 13 is a plan view of a conventional instruction leaflet used as work instruction information, and FIG. 14 is a schematic configuration diagram of an assembly line using the instruction leaflet of FIG. 11 ... assembly line (production line) 12 ... vehicle (product) 13 ... production planning means 14 ... work instruction means 15 ... work procedure input means 16 ... disk 17 ... writing means 18 ... reading means 19 …… Recording medium 21 …… Network 31 …… Instruction terminal 33 …… CPU 34 …… Display means 35… Work delay alarm 36 …… Work completion input means

Claims (1)

(57) [Scope of request for utility model registration] 1. A recording medium which is detachably provided on a product flowing through a production line and stores information from the outside, and which can output the stored information to the outside, and a recording medium provided on the product. Writing means for outputting the identification data of the product, reading means for reading the identification data stored in the recording medium, production planning means for managing the specifications of each product, and work steps for each product specification. A work content storage unit for storing the work content of the work instruction means for outputting work instruction information in each work process based on the identification data from the recording medium read by the reading means; and Display means for displaying the work instruction information for each work process, and after the work displayed on the display means is completed, the work instruction is operated by an operator and is displayed in the work instruction of the display means. And work completion input means for switching to the next work instruction content, the work instruction means, the time from the output of the work instruction information in each work process to the input of the work completion signal with respect to the reference time A work instruction device configured to obtain the number of delays and the accumulation of the delay time in the case of a delay in each work process.