JPS5957488A - Printed circuit board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] This invention relates to printed wiring boards, and more particularly to printed wiring boards for automatic assembly.

[Technical background of the invention]

Conventionally, when identifying the type of printed wiring board and installing the specified parts, the product identification code unique to the printed wiring board was printed or stamped as a combination of letters or numbers. Ta. However, this article identification code can only be identified by a sophisticated graphic discrimination device or by a human being.

Incidentally, in recent years, methods of using various automatic machines to attach parts and the like have been increasing. If the printed wiring board is a small number of products and a large number of electrical currents,
It is possible to instruct automatic machinery to confirm the article identification code r on the printing board T9, and is currently being implemented.

[Problems with background technology]

However, if the number of printed wiring boards is large (1), the automatic machine group must perform the assembly operations for many types of printed wiring boards (1+). , the operating time of each automatic machine group is set constant, and if there are no defects, when the assembly line is started,
It is sufficient to specify the product identification code of the printed wiring board to be started, but if the type of printed wiring board is significantly different from the size, type and quantity of parts to be assembled, it is difficult to realize this method.

[Purpose of the invention]

This invention was developed in view of the above-mentioned circumstances, and its purpose is to provide a printed wiring board that can automate tasks such as identification of types and assembly even in the case of a large variety of products in small quantities. It is in.

[Summary of the invention]

In order to facilitate the production of a wide variety of products in small quantities in a manufacturing system using automated machinery and inspection equipment for printed wiring boards, this invention allows printed wiring boards to be easily identified on the machine itself in addition to the conventional character display. The item identification code P that can be encoded is displayed.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a printed wiring board, and parts 2 such as ICs and capacitors are attached to the interface of this printed wiring board 1, and letters 3 for identification are displayed. Further, on the periphery of the printed wiring board 1, a code for identification, such as a barcode 4, is similarly displayed.

This barcode 4 is displayed to people in the area from the position closest to the end surface of the mounting portion of the component 2 to the end surface of the printed wiring board 1.

Such an area A always occurs when the printed wiring board 1 is placed in the slot 5 as shown in FIG. 2 or when it is attached to the case 6 as shown in FIG. It is something to be used. That is, in Figure 2,
A region A is provided to prevent the component 2 from hitting the slot 5 when the printed wiring board is accommodated in the slot 5.゛In addition, in Fig. 3, the printed wiring board 1 is placed in the case 6.
This figure shows the state in which it is attached using the mounting screws 7. The mounting screws 7 are screwed at a certain distance from the end face of the printed wiring board, but at the same time, the same distance is maintained between the component 2 and the end face of the printed wiring board 1, so that the area A is provided. As described above, the barcode 4 for identification is necessary in terms of manufacturing, but it is not an original function, so it is displayed in area A so as not to affect the function in any way.

Next, a method of forming the barcode 4 for identification display will be explained. That is, in order to clarify the type of the component 2, the printed wiring board 1 is silk screened with white or the like at the time of manufacturing the printed wiring board 1 so that the outer shape or singel of the component 2 and the part number are printed.

In this case, as shown in FIG. 4, the material 8 and the printed wiring board J are cut along the outline 9, so that the material 8 and the area A shown in FIG. 1 of the printed wiring board 1 are both cut. Print barcode 4.

By using this method, it is possible to sufficiently improve the accuracy of the printed barcode 4. Note that the barcode 4 may be displayed by stamping instead of printing.

The barcode 4 of this printed wiring board 1 is read by an optical recognition device 10 as shown in FIG. 5, and after its type is recognized, it is sent to an automatic assembly device 1. The output of optical recognition device 10 is sent to an electronic calculator. From this computer, control data for assembly of the Befuku 2 is sent to the automatic assembly device 1 according to the identified type of printed wiring board 1, and as a result, the automatic assembly device 1 can perform the assembly work. It will be done.

That is, in this printed wiring board 1, ■ a bar code 94 for identification that can be easily recognized by a machine;
is printed, it becomes possible to automate tasks such as identification and assembly of printed wiring boards 1 of various types and small quantities.

(2) According to the method shown in FIG. 4, the barcode 4 can be displayed in a narrow area without affecting the function of the printed wiring board 1. Furthermore, since the barcode 4 is cut after being printed or stamped, it can be clearly displayed up to the end surface of the printed wiring board. Furthermore, if the barcode 4 is displayed by printing, there will be no mismatch between the designed precious stone and the actual stone.

■ Since no human intervention is required, accidents such as falling printed wiring boards do not occur.

In the above embodiment, the barcode 4 was used as the identification code, but the invention is not limited to this, and other codes may be used as long as they are easily recognized mechanically. .

〔Effect of the invention〕

As described above, according to the present invention, it is possible to provide a printed wiring board that enables automation of tasks such as identification and assembly even in the case of a large variety of products in small quantities.

[Brief explanation of drawings]

Figure 1 is a perspective view showing a printed wiring board according to an embodiment of the present invention, Figure 2 is a diagram showing the printed wiring board stored in a slot, and Figure 3 is a diagram showing the printed wiring board installed in a case. FIG. 4 is a diagram showing a method of forming a barcode on the printed wiring board, and FIG. 5 is a diagram showing the process of identifying and assembling the printed wiring board. l...Printed wiring board, 2...Parts, 3...Barcode. Applicant's Representative Patent Attorney Takehiko Suzue Figure 1 Figure 2 Figure 4 Figure 5

Claims (1)

[Claims] A printed wiring board for automatic assembly, characterized in that the printed wiring board has an encoded article identification code P on the peripheral edge of its surface.