JPS6253602A - Method and apparatus for molding and adhering reinforcing piece in sports shoes - 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 Field of Industrial Application The present invention relates to a method for forming and adhering a reinforcing piece to be attached to a heel support part, a toe part, or a front side part for sports such as tennis, jogging, etc., and a method for carrying out the method. Regarding the device.

Conventional technology Conventionally, to bond the reinforcing pieces, the upper is hung on the last, and then artificial leather bands, natural leather, or cloth are attached to predetermined areas such as the heel support, toe, or front lateral area. The method used was to cut the foil into a predetermined shape and glue the reinforcing pieces together.

Problems to be Solved by the Invention However, the work of adhering the reinforcing pieces using the above-mentioned conventional method is time-consuming because the reinforcing pieces are glued by applying adhesive after applying a puff to the bonding point of the upper. Not only
There was a problem of a high defect rate because the adhesive protruded and the finish deteriorated, and the upper part was torn due to overhanging the puff.

The present invention was made with the aim of solving the problems of such conventional methods, and is a method and method for bonding reinforcing pieces that is easy to work with, can significantly improve productivity, has a low defect rate, and has a beautiful finish. We intend to provide the equipment.

Means for solving the problem, that is, the method of the present invention is to form a molded recess formed in accordance with the outer shape of the heel support part 2, toe part 3, or front side part 4 of the upper member 1 to which the reinforcing piece 5 is to be bonded. A reinforcing piece 5 made of an unvulcanized or semi-vulcanized rubber piece to which a heat-melt adhesive 6 is attached is loaded into the molding recess 12 of the molding mold 11 having a The mold 11 is heated while the predetermined portion 2.3 or 4 is pressed to form the reinforcing piece 5 into a shape that conforms to the molded recess 12, and at the same time, it is bonded to the upper member 1. shall be. Further, the second invention relates to an apparatus for carrying out the above method, in which the reinforcing piece 5 is to be bonded to the upper covering member 1.
a mold 11 having a molding recess 12 formed to match the outer shape of the heel support portion 2, toe portion 3 or front side portion 4; and a presser mold 13 for pressing the upper cover member 1 onto the mold 11. , and a pressing means 14 for the presser mold 13.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings. 1st
Figures 3 to 3 show a reinforcing piece 5 on the heel support part 2 of the upper member 1.
An example of molding and adhering is shown.

A mold 11 is fixed to the base 10 and has a mold recess 12 formed to match the outer shape of the heel support 2. Reference numeral 13 denotes a presser mold having a shape that conforms to the inside of the heel support portion 2. The presser mold 13 is attached to a piston rod 15 of a cylinder device 14 installed on the base 10, and its pressing force presses the upper cover member 1. It acts to press the heel support part 2 against the mold 11 from the inside.

Both molds 11, 13 are of a construction that, like the last, they are heated by conventional technical means using a necessary heater (not shown).

The reinforcing piece 5 is made of a plate of unvulcanized or semi-vulcanized rubber based on synthetic rubber or natural rubber, or a sponge thereof, cut into a predetermined shape, and coated with heat-melt adhesive 6 on one side (adhesive side). The molded recess 12 is loaded with the coated material.

The heat-melting adhesive 6 includes, for example, polybutadiene, C
R-based, EVA-based, SBR-based, and SBS-based adhesives are used.

As shown in FIG. 2, both molds 11.
13 is heated, the reinforcing piece 5 is molded into a shape that conforms to the molded recess 12, and at the same time is adhered to the heel support part 2 with the adhesive 6, and the upper member with the reinforcing piece 5 is formed as shown in FIG. 1 is completed.

Figures 4 and 5 show an example in which a reinforcing piece 51 is molded and adhered to the toe portion 3 of the upper, and Figures 6 and 7 show an example in which a reinforcing piece 52 is molded and adhered to the front lateral part 4 of the upper. Give an example.

Each upper member 1 to which the reinforcing pieces 5 to 52 have been bonded as described above is sewn and then hung onto a shoe last, and the sole is molded and bonded using a conventional method to complete the shoe.

As described in detail, according to the method of the present invention, since the reinforcing piece is formed and bonded to the upper member at the same time, not only the work efficiency is greatly improved, but also the adhesive force is large and the adhesive strength is high. is reliable, and almost no adhesion failure occurs. In addition, the rate of product defects due to adhesive oozing or uneven puffing is reduced, resulting in a beautiful finish. What's more, reinforcing pieces with complex shapes and patterns can be easily created using the molding recesses in the mold, making them unique.

Furthermore, since the upper member is also shaped by molding and adhering the reinforcing pieces, there are advantages such as good recirculation properties when hanging the shoe last (Last i~).

Further, according to the apparatus of the present invention, the above method can be carried out with a simple apparatus.

[Brief explanation of drawings]

FIG. 1 is a plan view of an apparatus for carrying out the method of the present invention, FIG. 2 is a sectional view taken along the line 2-2 in FIG. FIG. 4 is a sectional view of a main part of another embodiment, FIG. 5 is a side view of an upper member to which the same reinforcement piece is molded and bonded, FIG.
The figure is a side view of the upper member to which the reinforcing piece is molded and bonded. 1... Instep member 2... Heel support part 3... Toe part 4... Front side part 5... Reinforcement piece
6... Heat-melting adhesive 7... Molding mold
12... Molding recess 13... Press mold 14...
・Pushing means patent applicant Akatsuka Co., Ltd. Figure 1 Figure 2

Claims (2)

[Claims] (1) Heel support portion 2 of the upper member 1 to which the reinforcing piece 5 is to be bonded;
A hot-melt adhesive 6 was applied to an unvulcanized or semi-vulcanized rubber piece in the molding recess 12 of a mold 11 having a molding recess 12 formed to match the outer shape of the toe portion 3 or the front side portion 4. The reinforcing piece 5 is loaded, and the mold 11 is heated with the predetermined portion 2, 3, or 4 of the upper member 1 pressed against the reinforcing piece 5, and the reinforcing piece 5 is placed in the molding recess 12. A method for forming and adhering reinforcing pieces for sports shoes, characterized in that the reinforcing pieces are bonded to the upper member 1 at the same time as being formed into a conforming shape. (2) the heel support part 2 of the instep member 1 to which the reinforcing piece 5 is to be bonded;
A mold 11 having a molding recess 12 formed to match the outer shape of the toe portion 3 or the front lateral portion 4, a presser mold 13 for pressing the upper member 1 onto the mold 11, and a pressing means for the presser mold 13. 14. A molding and bonding device for reinforcing pieces in sports shoes, comprising: