JPS60254784A - Method of producing printed 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 (a) Technical Field of the Invention The present invention relates to a method of manufacturing a printed board with a code mark corresponding to a serial number, and particularly relates to a method of manufacturing a printed board with a code mark attached to an end face of the printed board. The present invention relates to a method of manufacturing a printed board which is applicable to the printed board of 2008, which is easy to manufacture, and which is easy to read.

(b) Conventional technology and problems Printed boards are equipped with electronic components and incorporated into equipment to perform various functions, and the manufacturing line from component mounting to the final testing process is almost automated. Work is being improved. In such a printed board production line, each type or lot of printed boards is identified and moved on to the next process.

Conventionally, as means for identifying the printed board in the above case, a means for optically recognizing the serial number displayed by a label or a seal affixed to the printed board has been adopted.

However, in the above case, the position where the serial number is assigned is not constant depending on the type of printed board, so
The work process could not be fully automated due to problems such as difficulty in reading, peeling of labels, and unclear markings.

In addition, as another conventional example, a method has been adopted in which a code mark corresponding to the serial number is provided by punching a printed board with a press die or providing a notch.

However, in this case, the number of man-hours required for post-processing, such as drilling, increases, and productivity does not improve, and the above-mentioned process and equipment have to be newly added.

(C) Purpose of the Invention The present invention was made in view of the above circumstances, and is applicable to printed boards of various shapes by adding a code mark to the end face of an example of the printed board, and is easy to manufacture. An object of the present invention is to provide a method for manufacturing a printed board that is easy to read.

(d) Structure of the Invention and the above-mentioned object is, according to the present invention, a method for manufacturing a printed board in which each printed board obtained by cutting a large-sized regular-sized board is given a serial number. A plurality of detection holes are drilled in the shape of a code mark along a cutting line corresponding to one side of the outer shape of the printed board, centering on the cutting line, and then, while forming the entire pattern, the inner surface of the detection hole and the surrounding area of the upper surface connected thereto are formed. A printed board in which the serial number of the printed board can be recognized by plating the board, further cutting the standard length board along the cutting line, and detecting the end face of the printed board including half of the detection holes by appropriate means. This is achieved by providing a manufacturing method.

(E) Embodiments of the Invention Hereinafter, embodiments of the present invention will be described in detail based on the accompanying drawings.

FIGS. 1 to 3 are process explanatory diagrams of the method of the present invention.

First, in FIG. 1, when a plurality of printed boards 2 are cut from a large regular-sized board 1, detection holes 3.3.・・・
・Multiple holes are drilled. The detection hole 3.3. . . . is a code mark corresponding to the serial number of each printed board 2 encoded with certain bits.

Then, as shown in FIG. 2, the detection holes 3, 3. . . , and the subsequent upper surface of the printed board 2 are plated (4) with copper or the like while the entire pattern is formed. In this way, the detection holes 3°3, . . . are formed as through holes 3a, 3a, . Next, as shown in FIG. 3, the printed board 2 of a predetermined size is completed by cutting the standard length board 1 along the cut vAA. In this case, since the oil portions of the through holes 3a, 3a, . . . 4)
It is formed on the plated portion and the non-plated portion.

A means for recognizing the serial number of the printed board 2 manufactured as described above will be explained. In FIG. 4, it is assumed that the printed board 2 is being conveyed in the direction B on a conveyor (not shown). Therefore, the conveyance operation of the printed board 2 is temporarily stopped at a predetermined detection position on the conveyance path. The detection device includes a plurality of probe pins 5'a, 5a arranged substantially parallel to the end surface 5 of the printed board 2 and at regular intervals.
.

... and one common pin 6b, and the probe pins 6a, 6a, ... are connected to the end surface 5 of the printed board 2.
The common pin 6b is in contact with the through hole 3a,
3a, . . . are brought into contact with the plated portion 4 on the upper surface. For this reason, the through hole 3a.

3a, . . . Probe pins 6a, 6 in contact with the inner wall of the section
A, . . . are electrically connected to the common pin 6b, but there is no electrical continuity between the probe pins 5a, 5a, . There will be no conduction. The above signal is detected by the detection circuit 7.
The code mark corresponding to the serial number formed by the through holes 3a, 3a, . . . is decoded as 1.0 binary code information, and the result is sent to the central control unit. Therefore, the destination of the printed board 2 is designated by the number, and transport to the next process is started.

In addition, in the above, when reading the serial number of the printed board 2, the conveyor had to be temporarily stopped.
As shown in FIG.
According to the means for sliding the microswitch 8 along the through hole 3a, the microswitch 8 is turned on and off repeatedly every time the through hole 3a is detected, so that the detection can be performed without stopping the conveyor even while the printed board 2 is being conveyed. is possible.

(F) Effects of the Invention Since the present invention is configured as described above, in the process of manufacturing the printed board 2 by cutting it from the regular length board 1, a plurality of through holes are formed on the portion of the printed board 2 that will become an example of the end surface 5. Hall 3
a, 3a, . . . are formed into a cord shape and this is used as the serial number, and the printed board 2 is completed by cutting the intermediate portions of the through holes 3a, 3a, . The serial number can be assigned at the same time during the manufacturing process of the plate 2, and there is no need to add a new process.

Furthermore, since the serial number is assigned using one example of the end face of the printed board 2, it can be done without reducing the mounting density of components, and it can be applied to printed boards 2 of various shapes. Furthermore, the serial number of the printed board 2 made in this way can be detected by inexpensive means.

[Brief explanation of drawings]

1 to 3 are process explanatory diagrams according to the method of the present invention,
FIG. 4 is a diagram showing a detection means for a printed board manufactured by the method of the present invention, and FIG. 5 is a diagram showing another detection means. 1... Standard length plate 2... Printed board 3... Detection hole 3a... Through hole 4... Plated part 5... End surface 6a... Probe bin 6b... Common pin 7...・Detection circuit 8... Micro switch 9... Actuator A... Cutting line Figure 1 Figure 2 a Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] In a method of manufacturing a printed board, in which each printed board obtained by cutting a large-sized regular-sized board is given a serial number, the cutting line is cut along a cutting line corresponding to one side of the outer shape of the printed board in the standard-sized board. A plurality of detection holes are drilled in the shape of a code mark at the center, and then the entire pattern is formed and the inner surface of the detection holes and the surrounding area of the upper surface connected thereto are plated, and then a standard length plate is cut along the cutting line. . A method of manufacturing a printed board in which the serial number of the printed board can be recognized by detecting an example end face of the printed board including half of the detection holes by an appropriate means.