JPH0615142B2 - Production instruction device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a production instructing apparatus suitable for use in a parts assembly line and the like, and particularly to different parts for a wide variety of works on the same assembly line. The present invention relates to a production instructing device capable of instructing assembled parts when assembling above.

[Conventional technology]

In recent years, in production lines such as automobile factories, a production method is adopted in which efficient use of the assembly line is planned, various kinds of works are transported on the same assembly line, and different parts are assembled to the respective works. . In such a production line, if the worker judges the works sequentially conveyed on the assembly line and selects the assembled parts accordingly, not only the burden on the worker increases,
Since an assembly error may occur, a device has been adopted that identifies the type of workpieces to be conveyed by an identification device and instructs the worker on the assembly parts.

As shown in FIG. 9, for example, this type of device is composed of a pair of work detection sensors 3A, 3B, a bar code reading device 7, lamps 9A, 9B, 9C, a control unit 11, etc. The sensors 3A and 3B are arranged at points P1 and P2 near the belt conveyor 1, respectively. Work pieces W1 to W6 on the belt conveyor 1
Passes through the points P1 and P2, passing signals are supplied to the control unit 11 from the respective work detection sensors 3A and 3B. Each of the works W1 to W6 is provided with a bar code label 5 which encodes information about an assembly part to be assembled to each work, and when the works W1 to W6 have passed the point P1, the bar code reading device 7 is used. Then, the instruction information of the parts to be assembled to each work is read, and this information is supplied to the control unit 11. When the work read by the barcode reading device 7 at the point P1 reaches the point P2, one of the lamps of the parts shelves 13A to 13C is turned on in order to indicate an assembly part corresponding to the work. Is configured. For example, work W6
The lamp 9A is turned on when the parts to be assembled into are stored in the parts shelf 13A. For this reason, the worker works on the parts in the parts shelf 13A whose lamp 9A is turned on by the work W6.
It is possible to prevent a mistake in assembling by assembling to.

[Problems to be solved by the invention]

However, in the conventional device, since the channel of the output circuit for lighting the lamp of the control unit 11 and the lamps 9A to 9C are not associated with each other and wired, the parts of the parts shelf 9A and the parts of the parts shelf 9B are separated from each other. When replacing or changing the parts in the parts shelves 9A and 9B to the same parts, the control unit 11 and the lamps 9A to 9C are used.
I had to change the wiring of the signal line to connect with. Therefore, when such a change operation is required and there are a large number of component shelves, wiring may be erroneously performed, and if the wiring is erroneously performed, erroneous components may be assembled to the work. There are devices of this type described in Japanese Patent Publication No. 54-23430 and Japanese Patent Laid-Open No. 53-80081, but even if these techniques are adopted, it is possible to cope with changes and additions of parts. It is not possible.

An object of the present invention is to provide a production instructing device capable of suppressing an error in a part instruction accompanying these operations even if a change or addition work of a part to be stored in a part storage container is performed. is there.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention is a part number information reading means for reading the part number information of an assembled part to be housed in each part container of the part shelf, and part number information obtained by reading the part number information reading means for the part shelf. Storage means for sequentially storing in association with each parts storage container, a plurality of instructing means for instructing the parts to be taken out by a command provided in each parts storage container, and part number information for specifying the parts to be assembled to the work Product number information input means for inputting the product number information, and a product number information selection means for selecting the product number information matching the product number information input by the product number information input means from the latest product number information group stored in the storage means, and the product number information selection means. Of the production instruction device for instructing an instruction to take out the component to the instruction means of the component storage container associated with the product number information selected by the above. One in which the.

〔Example〕

Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration of a preferred embodiment of the present invention.

In FIG. 1, the instruction unit 20 constitutes an instruction unit of the production instruction device, and is arranged in each component storage container of the component shelf.
The instruction unit 20 includes a product number input processing unit 22, a communication control unit 24, a central control unit 26, an input interface circuit 28, an output interface circuit 30, and an alarm unit 3.
2, the display unit 34, the communication control unit 24
5 is connected to the control unit 11 in FIG. 5 via a production information line 36 that transmits product number information that specifies the parts to be assembled to each work. When the communication control section 24 receives the product number information from the production information line 36, the communication control section 24 is configured to sequentially transmit the product number information to the central control section 26.

Further, the product number input processing unit 22 is connected to the bar code reader, and when setting the components to be accommodated in each component container first,
Alternatively, when changing the type of parts by changing the line, the operator causes the bar code reader to read the part number information attached to the bar code label, and when this part number information is entered, this part number information is digitally displayed. Convert it to a signal,
Central control unit 26 together with interrupt signal as serial number information
Output to. The product number information is newly stored in the memory of the central control unit 26. The central control unit 26 includes a CPU, a ROM,
It is composed of a microcomputer having a RAM and the like, and detection signals of various sensors such as a photoelectric sensor are supplied via an input interface circuit 28.

As shown in FIG. 2, the instruction unit 20 having the above-described structure is provided with the component storage containers 42A, 4A of the component shelf 40.
2B, 42C, 42D are installed in association with each other. Bar code labels 44A, 44B, 44C, and 44D coded as the storage information of the assembly parts stored in the containers 42A to 42D are attached to the upper portions of the respective containers 42. These bar code labels 44A-44
D has a different color and is colored green, red, blue, and yellow. As shown in FIG. 3, each instruction unit 20 has a display section 34 and a buzzer 32 on its front surface, and a bar code reader connection terminal 46 on its side surface. That is, the output terminal of the bar code reader is connected to the terminal 46, and the reading section of the bar code reader is connected to each label 44.
By moving along the surfaces of A to 44D, the product number information of the assembled parts housed in the containers 42A to 42D is stored in the memory of the central control unit 26 via the input processing unit 22. When the product number information is stored in the memory of the central control unit 26 via the product number input processing unit 22, new product number information is sequentially stored instead of the previously stored product number information.

Further, as shown in FIG. 4, the input / output terminal 48 of the communication controller 24, the input terminal 50 of the input interface circuit 28, and the output terminal 52 of the output interface circuit 30 are provided on the back surface of each instruction unit 20. It is arranged.

Further, in this embodiment, each container 42 is provided on the side plate of the shelf 40.
Photoelectric sensors 54A to 54D are provided for detecting that the components in the parts to 42D have been taken out. The photoelectric sensors 54A to 54D receive light from a light source such as a lamp arranged on the side plates facing each other, and the operator's hand blocks the optical path of the photoelectric sensor 54 placed in the containers 42 to 42D. When it is turned on, the work completion signal is output to the central control unit 26 via the input interface circuit 28. The production instruction device is constructed as shown in FIG.

The instruction unit 20 in the present embodiment configured as described above is configured to perform the task processing shown in FIGS. 6 to 8.

First, the task 1 will be described. As shown in FIG. 6, when the bar code reader connected to the terminal 46 reads the part number information (part number A) of the bar code labels 44A to 44D, the bar code reader centrally operates the part number input processing section 22. The information of the product number A and the interrupt signal are sent to the control unit 26 and the task 1 is activated. When task 1 is activated, the product number information (product number A) is stored in the memory of the central control unit 26 (step 100). After that, the process proceeds to step 102, and the product number information stored in advance in the memory and associated with each container 42A to 42D is compared with the product number information read by the bar code reader. Then, it is determined whether or not the product number information does not match (step 104), and when they match, the process of this routine is ended, and when they do not match, the process moves to step 106 to notify the operator that the product number is updated. Then, a signal for sounding the buzzer of the alarm unit 32 is output. After this, the product number information stored in the memory instead of the product number information previously stored in the memory is updated (step 108). That is, in this step, when the product information of the assembled component is updated, a process of replacing the previously stored product number information with new product number information is performed.

Next, the task 2 will be described. When the control unit 11 outputs the product number information (product number B) of the component to be assembled to the production information line 36, an interrupt signal is sent to the central control 26 together with the product number information (product number B) via the communication control unit 24, and the task 2 is executed. Is activated. The content of this product number information (product number B) is deciphered. When task 2 is activated, the product number information (product number B) is taken in and the contents are decoded (also step 200). After this, the process moves to step 202 and each container 42A ...
A process of collating the product number information (product number A) stored in a predetermined registration area as the information peculiar to the assembled parts stored in 42D and the product number information (product number B) decoded in step 200 is performed. Thereafter, it is determined whether or not the product number information of each container 42A to 42D matches the product number information transmitted from the production information line 36 (step 204). When NO is determined in this step, the process in this routine is ended, while when YES is determined, the process proceeds to step 206 and a signal for lighting the LED is output to the display unit 34. That is, when the product number information that specifies the parts to be assembled to the work is transmitted from the production information line 36, the LED of the container associated with the product number information that matches the product number information is turned on. For example, when the product number information of the containers 42A to 42D to be assembled to the work matches the product number information of the container 42A, the LED of the container 42A is turned on. In addition, LE of other containers 42B-42D
D remains off. After step 206, the process moves to step 208 to set the instruction flag to 1, and all the processes in this routine are completed.

Next, the task 3 will be described. A component storage container (42A-
42D) and the photoelectric sensor 54
Any of A to 54D detects this and outputs an interrupt signal to the central control unit 26 via the input I / F 28. When this interrupt signal is taken in by the central control unit 26, task 3 is started and it is judged whether the instruction flag is 1 or not (step 300). When it is judged as this step N, the process moves to step 302 to notify the operator of the parts. A signal for sounding a constant signal buzzer is sent to the alarm unit 32 to instruct the error, and the processing in this routine is completed.

On the other hand, if YES in step 300, the process moves to step 304, and an off signal is output to the display unit 34 and the output interface circuit 30. That is, the LED is turned off and a signal for stopping the driving of the actuator is output. After that, the process proceeds to step 306, and the completion signal is transmitted to the control unit 11 shown in FIG. 8 via the communication control unit 24 and the production transmission line 36. After this, the process proceeds to step 308, the instruction flag is reset to 0, and the processing of this routine is completed. That is, in this routine, it is determined whether the operator has correctly taken out the instructed component, and if the operator makes an error, the operator is alerted.

As described above, in this embodiment, the parts shelf 42 is provided with the part number input processing section 22 for outputting the part number information coded as the information peculiar to the assembled parts to the respective parts storage containers 42A to 42D. The storage unit is provided with a display unit 34 as an instruction unit for instructing an operator to take out parts, and further stores the product number information input to each product number input processing unit 22 in association with each component storage container. Since the memory has been provided, even if the parts to be stored in the containers 42A to 42D are changed, the wiring is not changed and the part number information corresponding to the changed parts is read through the barcode reader to update the contents of the memory. Thus, it is possible to easily carry out the work of changing the parts, and it is possible to prevent the erroneous parts from being instructed due to the change work.

In the above embodiment, the instruction unit 20 is arranged in association with each of the component storage containers 42A to 42D, but the container is common to all the containers except the product number input processing section 22 and the display section 34. It is also possible to do so.

〔The invention's effect〕

As described above, according to the present invention, the component information of the component to be stored in each component storage container is sequentially stored in the storage means in association with the component storage container, and the component to be assembled to the work is specified. When the product number information is input, the product number information that matches this product number information is selected from the latest product number information in the product number information group stored in the storage means, and the part associated with the selected product number information is selected. Since the instructing means of the storage container is instructed to take out the parts, even if the parts to be stored in the parts storage container are changed or added,
It is possible to suppress the occurrence of an error such that an erroneous component is assembled due to the component change or addition work, and it is possible to shorten the time for stopping the production line due to the component change or addition work.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an instruction unit 20 showing an embodiment of the present invention, FIG. 2 is a configuration diagram of a parts shelf on which the instruction unit 20 according to the present invention is arranged, and FIG. 3 is a front surface side of the instruction unit 20. 4 is a perspective view of the back side of the instruction unit 20, FIG. 5 is a configuration diagram of a production instruction device using the apparatus according to the present invention, and FIG. 6 is a process of task 1 of the instruction unit 20. 7 is a flow chart for explaining the processing of task 2 of the instruction unit 20, and FIG. 8 is a flow chart for explaining the processing of task 3 of the instruction unit 20. The figure is a block diagram of a conventional production instruction device. 20: instruction unit, 22: product number input processing unit, 24
...... Communication control unit, 26 ...... Central control unit, 28 ...... Input interface circuit, 30 ...... Output interface circuit, 32 …… Alarm unit, 34 …… Display unit, 40 …… Parts shelf, 42A to 42D …… Parts storage container.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-60-16347 (JP, A) JP-A-61-19519 (JP, A) JP-A-53-80081 (JP, A) JP-B-54- 23430 (JP, B2)

Claims (1)

[Claims] 1. A part number information reading means for reading part number information of an assembled part to be housed in each part container of a parts shelf, and part number information read by the part number information reading means in association with each parts container of the parts shelf. Storage means for sequentially storing, a plurality of instructing means arranged in each component storage container for instructing to take out the parts by a command, and a part number information inputting means for inputting part number information for specifying the parts to be assembled to the work, Corresponding to the product number information selection means for selecting the product number information that matches the product number information input by the product number information input means from the latest product number information stored in the storage means, and the product number information selected by the product number information selection means And a commanding means for commanding a command for taking out the parts to the commanding means for the parts storage container.