JPH0732051B2 - Power cord / stopper and its integral molding method - Google Patents

Description

The present invention relates to a power cord / stopper and its integral molding method, and more particularly, to a power cord / stopper integral molding method for connecting to a desired electric device. And its power cord / stopper, it is easy to integrally mold the cord and the cord / stopper, and if necessary, the integrally molded part of the stopper and the power cord can be easily observed from the outside so that the inside can be checked. -Provides a stopper and its integral molding method.

(Prior Art) As shown in FIG. 4, a stopper of a power cord provided in a conventional electric device has a cord through hole formed by metal plate processing on a metal plate 50.
52 and a mounting bolt screwing hole 54 are bored, and the metal plate is screwed to the fixed plate 56 with a set bolt 58. Therefore, the manufacturing process becomes complicated and the cost increase cannot be avoided.

(Problems to be Solved by the Invention) The present invention is intended to eliminate the above-mentioned drawbacks, and its gist is the center of each plate body of the first and second metal jig bodies having a required area and thickness. An opening having a diameter corresponding to the outer circumference of the stopper formed on the outer circumference of the cord, and a plurality of through holes for introducing molten synthetic resin formed adjacent to the circumference of the opening. A step of penetrating a required cord into these openings of the first and second metal jig plates; guiding the first and second metal jig plates into a cavity of a required mold, and pressing a cord stopper to be molded. And a step in which the first and second metal jig plates are arranged in parallel with each other at regular intervals; the engaging members are fitted into the engaging member fitting through holes of the first and second metal jig plates, Fixing in the cavity;
A power source comprising a step of injecting a required molten synthetic resin into the cavity through the molten synthetic resin introducing through hole after the upper and lower molds are brought into close contact with each other; a step of releasing the molten synthetic resin after cooling and curing It is a cord stopper and its integral molding method.

"Structure" (Embodiment) An embodiment of each invention related to this application will be described with reference to the drawings. 1-3, in the center of each of the first metal jig plate 20 and the second metal jig plate 22 having an area and a thickness to be the stopper plate 14 of the molded power cord / stopper 12, Further, the openings 20a and 22a corresponding to the conical stopper portion 16 to be formed are respectively formed, and a plurality of molten synthetic resin introducing through holes 20b and 22b are formed adjacent to the periphery of these openings, respectively. Further, through holes 20c, 22c for fitting the engaging member are formed near the upper and lower sides of each plate.

The power cord 10 is penetrated through the openings 20a and 22a of the first and second metal jig plates 20 and 22, and the first and second metal jig plates are placed in the cavities 40a and 42a of the upper and lower molds 40 and 42. The guide plates are arranged parallel to each other with an interval corresponding to the thickness of the stopper plate 14 to be molded.

Next, in the upper and lower engaging members fitting through holes 20c, 22c of the metal jig plates 20, 22, for example, as shown in the drawing, one end has a banana spring 30a and the other end has a bent portion 30b for engagement. Element
Each of the bent portions 30b penetrates 30 and is fitted into a concave portion 40b formed in the inner wall of the cavity 40a of the upper mold 40 and a concave portion 42b formed in the inner wall of the lower mold 42. Fix the metal jig plates 20 and 22.

Molten synthetic resin is injected into the cavities 40a and 42a of the upper and lower molds. That is, the openings 20 of the first and second metal jig plates 20 and 22.
The required molten synthetic resin is injected from a, 22a and through holes 20b, 22b at high temperature (about 300 ° C) and high pressure (about 70kg / 1cm ² ), and the synthetic resin is cooled and cured, and then demolded. Power cord as shown in
The stopper body 14, the conical stopper portion 16 and the square stopper portion 18 of 10 are obtained.

The second metal jig plate 22 is previously attached to the cavity 42 of the lower mold 42.
If the first metal jig plate 20 is fixedly placed in a and the first metal jig plate 20 is detachable, the work becomes efficient.

Further, if necessary, a transparent molten synthetic resin is injected into the molds 40, 42, and if the resin is cooled and cured and then released from the mold, the stopper body
14, the conical stopper portion 16 and the quadrangular stopper portion 18 are transparent.

[Operation and Effect] As described above, according to the method of the present invention, the first and second metal jig plates 20 and 22 penetrating the power cord 10 through the openings 20a and 22a are guided into the cavities 40a and 42a. Second metal jig plate
Stopper body 14 formed by engaging members 30 and 20 and 22
Since the width corresponding to the thickness of the power cord is fixed in parallel to each other, positioning can be performed accurately, work becomes easier, and the stopper body 14 and the conical stopper portion 16 are easily molded integrally around the power cord 10. Therefore, low cost manufacturing becomes possible.

Further, if transparent molten synthetic resin is injected into the cavities 40a, 42a of the molds 40, 42 as required, the power cord 10, the stopper body 14, the conical stopper portion 16, and the quadrangular stopper portion 18
The connection part with and can be easily observed from the outside, and it becomes easy to find a failure location.

Then, the bolt 58 can be penetrated into the bolt holes 14a, 14a formed in the stopper body 14 to easily fix the stopper at a desired position, and sheet metal working is unnecessary.

[Brief description of drawings]

FIG. 1 is a perspective view of a power supply stopper molded by the method according to the present invention, and FIG. 2 is a first and a second metal jig plates fixed in parallel in the cavities of upper and lower molds and a stopper to be molded. FIG. 3 is a vertical cross-sectional view of the upper and lower molds, and FIG. 4 is a vertical cross-sectional view of a known power cord / stopper. 10 ... Power cord; 14 ... Stopper body; 14a ... Bolt hole; 16 ... Conical stopper; 18 ... Quadrangular stopper part; 20 ... First metal jig plate; 20a ... Opening part; 20b ... ... Molten synthetic resin introduction through hole; 20c ... Engagement member fitting through hole; 22 ... Second metal jig plate; 20a ... Opening portion; 22b ... Molten synthetic resin introduction through hole; 22c ... Through hole for mating member fitting; 30 ... Engaging member device fitting part; 40 ... Upper mold 40a ... Cavity; 42 ... Lower mold; 42a ... Cavity.

Claims (3)

[Claims] 1. A power cord stopper comprising a stopper plate having a required area and a thickness around the power cord, and a conical stopper portion and a square stopper portion on both sides thereof. 2. A power supply cord / stopper formed by molding a stopper plate, a conical stopper portion and a quadrangular stopper portion with transparent synthetic resin. 3. An opening having a diameter corresponding to the outer circumference of a stopper formed on the outer circumference of the cord, at the center of each plate body of the first and second metal jig plates having a required area and thickness.
A plurality of through holes for introducing molten synthetic resin formed adjacent to the periphery of the opening, and an engaging member fitting through hole formed at a required position of each main body. , Second
A step of penetrating required power cords into both openings of the metal jig plate; guiding the first and second metal jig plates into the cavity of the required mold, and depending on the thickness of the cord stopper to be molded, And a step of arranging the first and second metal jig plates in parallel with each other at a fixed interval; fitting an engaging member into the engaging member fitting through-holes of the first and second metal jig plates to form the first and second metal jig plates; A step of fixing in the cavity; a step of injecting a required molten synthetic resin into the cavity through the molten synthetic resin introducing through hole after the upper and lower molds are brought into close contact with each other; The step of removing the mold; and the integrated molding method of the power cord and stopper.