JPH09117933A - Manufacturing method of electrical parts - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To improve the yield of hoop materials. SOLUTION: A strip-shaped hoop material 1 is continuously punched and bent by a press machine 9 to form a pair of left and right terminals 3 and 5 continuously, and each pair of terminals 3 and 5 is continuously supplied to an injection molding machine 11. In the method of manufacturing an electrical component in which the pair of terminals 3 and 5 are integrally molded with the resin mold 7, the pair of left and right terminals 3 and 5 are punched by shifting the pitch and the injection molding machine 11 is provided with the pair of left and right terminals 3. , 5
It is characterized in that it is supplied with the same pitch. By punching with the pitch shifted, the bending margins 3a, 5a at the ends of the left and right terminals 3, 5 can be wrapped back and forth in the feeding direction, and the yield can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an electric component in which press working, resin molding and the like are continuously processed by a hoop material.

[0002]

2. Description of the Related Art A conventional manufacturing method of this type is disclosed in, for example, Japanese Patent Application Laid-Open No. 7-117072. There is something like FIG. In this manufacturing method, a strip-shaped hoop material 1 is continuously supplied to a press machine to continuously form a pair of left and right terminals 3 and 5 as shown in FIGS. 5A and 5B, and each pair of terminals 3 and 5 is injected. The resin mold 7 is continuously supplied to the molding machine to mold the resin mold 7 as shown by the chain line. Therefore, the electric component can be continuously manufactured.

[0003]

However, in the above-described manufacturing method, the pair of left and right terminals 3, 3 by the press machine are used.
Since 5 was punched at the same pitch, there were the following problems.

That is, the tips of the left and right terminals 3, 5 are formed by bending, but since the left and right pitches are the same, the tip bending margins 3a, 5a face each other on the left and right, and the hoop member 1 has a width H. I had to use a big one. For this reason, the loss of the press is increased and the yield is poor, and the cost reduction of the product is limited.

Therefore, an object of the present invention is to provide a method of manufacturing an electric component which can significantly improve the yield.

[0006]

In order to solve the above-mentioned problems, the present invention is directed to continuously forming a pair of left and right terminals by continuously punching and bending a band-shaped hoop material with a press machine, and injection-molding each of the pair of terminals. In a method of manufacturing an electric part in which a pair of terminals are integrally resin-molded by continuously supplying to the machine, the pitch of each pair of left and right terminals is shifted and punched, and the pitch of each pair of left and right terminals is formed in the injection molding machine. It is characterized by supplying together.

Since the pair of left and right terminals are punched by shifting the pitch, the bending margins at the ends of the left and right terminals can be wrapped back and forth in the feeding direction, and the yield can be improved.

[0008]

Embodiments of the present invention will be described below.

FIG. 1 shows a state in which the terminals 3 and 5 are punched and bent on the hoop material 1 by a pressing machine. The pair of left and right terminals 3 and 5 are formed by punching and bending with a 1/2 pitch shift, as shown in FIG.
Reference numeral 13 is a feed hole, and the feed hole 13 is also shifted by 1/2 pitch in accordance with the left and right terminals 3 and 5. Therefore, the bending margins 3a and 5a at the tips of the terminals 3 and 5 can be wrapped back and forth in the feeding direction. Therefore, the width h of the hoop material 1 can be reduced. Compared with the one shown in FIG. 5, the relation of H> h can be established. Therefore, the yield of the hoop material 1 can be significantly improved, and the unit cost of the product can be significantly reduced.

FIG. 3 shows a state in which continuous molding is performed by the press 9 and the injection molding machine 11. The hoop material 1 is continuously supplied to the press 9, and the terminals 3 and 5 in the state of FIG. 1 are continuously formed. Then, the left and right terminals 3 and 5 are continuously sent out from the press machine 9 with a 1/2 pitch shift. The pair of left and right terminals 3 and 5 are supplied to the injection molding machine 11 at the same pitch, and resin molding is performed. That is, by advancing the terminal 5, which is delayed by 1/2 pitch with respect to the terminal 3, by 1/2 pitch, the injection molding machine 11 is operated in the state of FIG.
Supplied to The pitch adjustment as shown in FIG. 4 is performed by adjusting the pitch of the first one in the continuous molding and feeding it into the injection molding machine 11, and thereafter from the press machine 9
The left and right terminals 3 and 5 that are sent out with a two-pitch deviation are automatically pitch-matched and sent to the injection molding machine 11 to form a resin mold.

[0011]

According to the invention of claim 1, the yield of the hoop material can be remarkably improved, and the unit price of the product can be remarkably reduced.

[Brief description of the drawings]

FIG. 1 is a plan view of a hoop member with a terminal punched out according to an embodiment of the present invention.

FIG. 2 is a plan view showing the same pitch deviation.

FIG. 3 is an overall view showing the relationship between the press machine and the injection molding machine.

FIG. 4 is a plan view showing a state in which the pitches are matched.

5A is a plan view and FIG. 5B is a sectional view according to a conventional example.

[Explanation of symbols]

 1 Hoop material 3, 5 Terminal 7 Resin mold 9 Press machine 11 Injection molding machine

Claims (1)

[Claims] 1. A strip-shaped hoop material is continuously punched and bent by a press to form a pair of left and right terminals continuously, and the pair of terminals are continuously supplied to an injection molding machine to integrally form the pair of terminals. In the method of manufacturing an electrical component to be resin-molded, the pitch of each of the pair of left and right terminals is shifted and punched, and the pitch of each pair of left and right terminals is supplied to the injection molding machine at the same time. Method.