JPS58209876A - Method of continuously producing multicore connector plug - 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 The present invention relates to a method for continuously manufacturing a multi-core connector plug.

By the way, when manufacturing connector plugs with small core shaft diameters, it is difficult to draw and cut multiple wires at the same time, and when cutting such wires to the required length, it is difficult to connect them. Because it is necessary to form the end into a shape that can be easily fitted to the side of the connected part such as a connection hole, multiple wires are drawn, then cut to the required length, and then In fact, it has been difficult to carry out the entire manufacturing process, such as the integral molding of the cut wire (core) and the resin body, efficiently and automatically and continuously.

This invention comprises the steps of drawing a plurality of wire rods with required intervals, forming circumferential grooves having sloped surfaces at each required pitch interval of each wire rod, and molding each wire rod into a resin mold. The step of sequentially supplying each wire rod to a predetermined position of the cavity portion by transferring it to the cavity side in a molding mold device at predetermined pitch intervals, and the step of completely molding the mold before supplying each wire rod to the cavity portion. At the same time as tightening, there is a step of forming recesses for preventing the wire rods from being pulled out from the molded resin body side at predetermined pitch intervals for each wire embedded in the molded resin body, and simultaneously with the complete mold clamping of the mold, the wire rods are supplied to the cavity part. A step of cutting and separating each of the wire rods at a predetermined location in the rear circumferential groove, and injecting molten resin material under pressure into the cavity of the mold to form a molded resin body of a desired shape to hold each of the wire rods in a predetermined position. This is a continuous manufacturing method for multi-core connector plugs, which consists of a resin molding process, and its purpose is to improve the reliability of this type of product by efficiently producing high-precision, high-quality products. The aim is to improve performance and reduce costs.

Hereinafter, the manufacturing process of a multi-core connector plug according to the method of the present invention will be explained based on embodiment figures.

In FIGS. 1 and 2, A is a wire supply device that supplies a plurality of plated wire rods B to the mold device C for resin molding, and FIG.
After supplying the wire B to a predetermined position of the cavity part consisting of the cavities 3.4 formed in the fixed mold 1 and the movable mold 2 in C, the state in which both molds 1.2 are completely clamped is shown. In addition, Figure 2 shows the process of opening the mold after molding a multi-core connector plug molded product, and opening the mold by one pitch equal to the required length of the multi-core E in the molded product. The figure shows a state in which it has moved backward toward the A side. In addition, the above-mentioned wire A' feeding device A is provided with a circumferential groove forming mechanism 5 having an inclined surface on the wire B from the mold device C side, and a mechanism 5 for forming a circumferential groove having an inclined surface on the wire B, and a same A movable chuck 6 for the wire B that can be moved back and forth by the distance of the pin, and a wire B provided at the rear position of the movable chuck.
A wire drawing mechanism 8 for the wire rod B is provided, which is comprised of a fixing chuck A and a chuck 7 for the wire rod, and a plurality of wire drawing rollers 8a disposed on the supplying device A side at a rear position of the fixed chuck. In addition, on the side of the mold apparatus C described in -1-, each line A is embedded in the molded resin body 9 at the same time as both molds 1.2 are completely clamped before being supplied to the cavity 3.4 part of B. At each predetermined pitch interval of each wire B, as shown in FIG. A mechanism 12 is provided for cutting and separating each wire B supplied at a predetermined location in the rear circumferential groove.

To explain the wire drawing action of the wire B by the wire drawing mechanism 8,
A fixed chuck 7 and a movable chuck 6 hold a plurality of wire rods B1 with required intervals between them and the wire drawing roller 8a.
At the same time, the movable chuck 6 is closed in this state, and the supply device A (movable chuck 6) is moved to the mold device C side, as shown in FIG. Next, the movable chuck 6
At the same time, the fixing chuck 7 is closed and the feeding device A (wire drawing roller 8a) is moved to the anti-mold device C as shown in FIG.
When the wire rod B1 is moved backward to the side, the wire rod B1 is subjected to the wire drawing action by the wire drawing roller 8a while the feeding side is simultaneously fixed by the fixing chuck 7.

The feeding action of each wire 113+ to the molding device C side is performed when the feeding device A moves back to the molding device C side after performing the above-mentioned wire drawing action, and in this case,
After the curve action is completed, open the fixed chuck 7 and close the movable chuck 6 at that position. Moreover, the above-mentioned return movement of the supply device A simultaneously performs the unwinding and feeding of the wire rod 1.

Each wire wire B2 subjected to the wire drawing action has a circumferential groove formed by the circumferential groove forming mechanism 5 having an inclined surface at 1 pitch 1-no 1 interval σ, and this circumferential groove formation is performed as follows. It is done. That is, as shown in FIG. 3, the circumferential groove forming mechanism 5 includes two elongated blades each having a plurality of blade holes 13a-1, 41 through which a plurality of wire rods B2 can be individually inserted. Board 13.
14 and the double-edged plates, respectively, with blade holes 13a and 14a.
The above-mentioned double-edged plate consists of an eccentric rod 15 that revolves around the axis X-X line of each wire B2 inserted therein, a rotation motor (not shown) for the eccentric rod, etc.
, 14 are arranged so as to be able to slide into contact with each other with the blade holes 13a and 14a communicating with each other, and the double blade holes 13a
, 14a has an inclined surface with a small diameter on the sliding surface side and a large diameter on the non-sliding surface side. Therefore, the double-edged hole 1
3a. When the double-edged plates 13 and 1.4 rotate as described above with each wire rod B2 after the wire drawing process described above inserted into the wire rod 14a, double-edged holes 13a and 1.4 are formed on the peripheral surface of each wire rod B2.
A circumferential groove 16 having a required depth and having substantially the same slope as the slope 14a is formed. In addition, the above-mentioned double-edged plate 13
．． 14 is automatically stopped after forming the circumferential groove 16, and at the time of stopping, the double-edged hole portion 1.3a
, 14a are configured so that they can be opened to communicate with each other to the extent that each wire rod B2 can pass therethrough.

-1- Each wire rod B3 after the wire drawing and circumferential groove forming treatment described above is
It is transferred to the mold device C side, where it is subjected to the action of forming a recess 10 for preventing extraction and the action of cutting a predetermined length. That is, the recess forming mechanism 11 and the cutting/separating mechanism 12 act simultaneously with the complete clamping of both molds 1.24, as described above.
The recess forming mechanism 11 is composed of a punch and the like arranged opposite to each other on the parting line surfaces of the fixed mold 1 and the movable mold 2, and creates a recess 1o on the circumferential surface of the wire rod [18] during complete mold clamping. Pressure forming.

In addition, the cutting and separation mechanism for the wire B3 consists of a cutter, etc., which is arranged facing the birch inograin surfaces of the stationary mold 1 and the movable mold 2, or is arranged only on the movable mold 2 side, and completely clamps the mold. At the same time, J3 is used to cut a predetermined portion (necked portion) 16a in the rear circumferential groove 16 of the wire B3.

The wire rod cut by the L cutting and separating mechanism 12 is
It constitutes a stand core E integrated into the molded product shown in the figure.
The base core E and the molded resin body 9 are integrated by a normal resin molding process.

That is, after the molds 1.2 shown in FIG. 1 are completely clamped, a molten resin material is injected into the cavity 3.11 under pressure to form a molded resin body 9 of a desired shape. As shown in FIG. 2, the molded product is ejected from the inside of the molded part by an ejector turbine 17 after molding.

2-j: When using the method of the present invention, by performing the above-mentioned steps in sequence, it becomes possible to efficiently produce high-precision and high-quality multi-core connector plugs. It has excellent effects.

In particular, in the wire drawing process of the method of the present invention, a large number of wire rods can be drawn under uniform conditions compared to the conventional method in which the wire rods are simply passed between wire drawing rollers. In addition, in the process of forming the circumferential groove of the wire rod, conical protrusions having the required slopes can be formed at both ends of the base core in the molded product, so the fit between the base core and the connected part side is improved. It is easy and can improve quality, and it has remarkable effects such as labor saving as the wire drawing and feeding process to the mold device can be performed by the reciprocating movement of the wire feeding device. has.

[Brief explanation of drawings]

The figures show examples of the method of the present invention.
The figure is an explanatory view of the entire process of the method of the present invention, Figure 3 is an enlarged perspective view showing the main part of the peripheral groove forming mechanism of the wire rod, and Figure 4 is a partial cutout enlargement of the cut and separated wire rod (core). FIG. 5 is a partially cutaway enlarged perspective view showing a molded product of a multi-core connector plug. B (14+, B2', l Aoi ()... wire rod,
C... Mold device, D... Molded product of multi-core connector plug, E... Core, 9... Molded resin body, 10... Recess for opening 11-th, 16... circumferential groove. Patent applicant: Tsukasa Saka

Claims (1)

[Claims] A step of wire drawing a plurality of wire rods with required spacing maintained, a step of forming a circumferential groove having an inclined surface at each required pitch interval of each wire rod after the wire drawing process, and a step of forming the circumferential groove. A step in which each of the wire rods is transferred to the cavity side of the mold device for resin molding at predetermined pitch intervals to sequentially supply each wire rod to a predetermined position in the cavity portion, and before the wire rods are supplied to the cavity portion. At the same time as the complete mold clamping of the mold, a step of forming recesses to prevent the wire rods from being pulled out from the molded resin body side at predetermined pinch intervals for each wire embedded in the molded resin body, and complete mold clamping of the mold. At the same time, a step of cutting and separating each wire rod fed into the cavity at a predetermined location in the rear circumferential groove, and a process of injecting molten resin material under pressure into the cavity portion of the mold to hold each wire rod in a predetermined position. 1. A continuous manufacturing method for a multi-core connector plug, characterized in that a resin molding processing step of molding a molded resin body is successively performed.