JPS6116702A - Production of main sole of shoe sole - 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 1] The present invention is directed to a method of manufacturing the outsole of men's shoes, women's shoes, etc.

[Technical Background of the Invention and its Problems] Conventionally, a method for manufacturing the outsole of this type of shoe sole is to provide a concave portion from the non-stepped part on the ground contact side of the outsole main body to the toe part, and to An injection part is provided between the non-stepping part and the toe part on the adhesive surface side, and communicates with the recess through an injection port, and raw material is injected from the injection part into the recess to form the non-slip piece. It was molded in one piece.

However, although it is possible to integrally mold similar materials using injection molding, it is impossible to integrally mold dissimilar materials using injection molding. When the non-slip piece is integrally molded by injecting the raw material from the injection part which is easily worn in the middle part of the non-slip part, the thickness of the center part of the non-slip part where the injection part is located is thicker than the thickness of the peripheral part of the non-slip part, and it is difficult to slip. The center of the non-slip piece becomes colder than the periphery of the non-slip piece, and the center of the non-slip piece becomes depressed, creating a so-called huff, resulting in an unsightly appearance and weak strength, which significantly reduces the product value. was.

[Object of the Invention] Therefore, the present invention was created to solve the above-mentioned problems, and it is possible to integrally mold dissimilar materials by injection molding, which was conventionally considered impossible. :' J, not only the sea urchin, but also the thorns of the non-slip piece.
l° Real (Nibo 11 [Like a monkey, but also a Buddha in appearance])
This provides a method for manufacturing the sole of a shoe, which has excellent strength and greatly improves commercial value.

The main point of the invention is that a recess is provided from the non-stepping part on the ground contact side to the toe part (J), and a small-diameter injection port is provided near the non-stepping part on the adhesive surface side. After forming the outsole main body and applying adhesive to the inner surface of the recess on the side of the ground surface of this outsole main body and drying it, The method consists in integrally molding the anti-slip piece by injecting a paste-like raw material such as synthetic resin or rubber into the recess from an injection part on the adhesive surface side.

[Embodiment 1 of the invention An embodiment of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes an outsole main body made of leather, and this outsole main body 1 is provided with a recess 5 of an appropriate depth from a non-stepping part 3 to a toe part 4 excluding the peripheral edge on the ground surface 2 side. , a substantially elliptical injection part 8 is recessed near the non-stepping part 3 on the side of the adhesive surface 6 and communicates with the recess 5 via a small diameter injection lower;
Further, near the toe portion 4 of the ground surface 2 and the adhesive surface 6, there is a circular through hole 9 for preventing peeling 1, which communicates with the recess 5.
It is formed to provide.

When the injection part 8 is provided in a recess, the side surface on the recess 5 side is located on the same perpendicular line as the side surface on the non-stepping part 3 side of the recess 5, and the back surface is located in the recess, as shown in FIG. It should be located on the same horizontal line as the back surface of 5.

Then, as shown in FIG. 4, the ground plane 2 of the outsole main body 1 is
After applying two coats of special high-performance adhesive to the inner surface of the recess 5 on the side and allowing it to seep through sufficiently and drying for about an hour, apply a paste-like synthetic resin with an appropriate humidity to the recess 5 on the side of the ground surface 2. Alternatively, the non-slip piece 10 is integrally molded by injecting a raw material such as rubber from the injection part 8 on the side of the adhesive surface 6 and melting the adhesive.

[Effects of the Invention] As described above, the present invention applies an adhesive to the inner surface of the recess 5 on the ground surface 2 side of the outsole main body 1 and dries it, and then injects a paste-like synthetic resin or rubber into the recess 5. Adhesive surface 6 of raw materials such as
By injecting from the side injection part 8 and integrally molding the anti-slip piece 10, injection molding, which was previously impossible, is possible.
Not only is it possible to integrally mold dissimilar materials, but also
Compared to vulcanization molding, Q1 extrusion molding allows the non-slip piece 10 to be more firmly and tightly packed in the recess 5? ) To avoid slippage, use the anti-slip piece 1.
In this case, if a through hole 9 is provided near the toe portion 4 of the contact surface 2 and the adhesive surface 6 so as to communicate with the recess 5, it is possible to prevent the peeling of the 0. piece 10 front 1
The end of the slippery piece 10 is held by the synthetic resin or rubber in the through hole 9 and the protrusion 8, and the anti-slip piece 10 is peeled off.
The layer can reliably prevent leaks.

Moreover, a small-diameter injection molding is provided near the treading part 3 of the adhesive surface O of the outsole main body 1. Through the lower part' (recessed part 5
By injecting the raw material from the peak part 8 and molding the non-slip piece 10 into a body, the toe of the foot 11.7 of the step 11.7 is Since the non-slip piece 10 is molded by injecting the raw material from this position to avoid the part between the part 4 and the part 4 that is prone to wear, it is possible to avoid the part that is easily worn when walking as in the conventional method. First, by injecting the original UPI from the injection part in the middle of the toe part and integrally molding the non-slip piece, it is possible to reliably prevent sink marks from occurring in the center of the non-slip piece.

Therefore, the appearance is good and the strength is strong, and the commercial value can be significantly improved.

As explained above, according to the present invention, not only is it possible to integrally mold different A trade surfaces together by index molding, which was conventionally considered impossible, but also >:'h +L j'
It has various effects such as being able to reliably prevent the peeling off of the metal, and having good appearance, strong strength, and the ability to increase the commercial value.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a bottom view, FIG. 2 is a plan view, and FIG. 3 is a cross-sectional view of the main part showing the state before the anti-slip piece is integrally molded in the recess. , Fig. 4 is a sectional view of the main parts showing the state after the anti-slip piece is molded into the recessed part. 1... Outsole main body, 2... Ground plane, 3・
...Non-stepping part, 4...Toe part, 5...
Recessed portion, 6...Adhesive surface, 7...(t4 i
, 1. f [l, 8...Injection part, 9...Through hole, 10...8"3 stopper. !14 Applicant Roman Shoji Co., Ltd. 3rd OK) degree

Claims (1)

[Claims] 1. An outsole with a concave part from the non-stepping part on the ground-contact side to the toe part, and an injection part that communicates with the concave part through a small-diameter injection port near the non-stepping part on the adhesive side. After forming the main body and applying adhesive to the inner surface of the recess on the ground side of the outsole main body and drying it, paste raw materials such as synthetic resin or rubber into the recess from the injection part on the adhesive side. A method for manufacturing the outsole of a shoe sole, characterized by integrally molding a non-slip piece by injection.