JPH08256807A - Forming mold of shoe sole - Google Patents

Abstract

PURPOSE: To prevent one sole material from mixing with the other sole material when they are supplied to the forming mold of sole by providing a fitting part at a corresponding part of the edge of each sole material so that a part of the sole material is guided from the fitted face of the fitting part to prevent it from mixing other shoe sole material with each other by its projection. CONSTITUTION: This forming mold comprises a dent forming mold (a) and a projection forming mold (b) to form the cavity of a shoe sole shape, and a fitting part (c). The fitting part (c) is detachably fitted into a partition dent groove of appropriate shape provided in the dent forming mold (a) or the projection forming mold (b). The butting part is a pair of split mold in which a through hole 2 is formed storing a sole material in the inner space when the split molds are butted as well as a thin guiding gap which guides the sole material to one edge of a fitted part 3 is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to an improvement of a mold for molding shoe soles having different kinds of colors and materials.

[0002]

2. Description of the Related Art Conventionally, in order to form this kind of shoe sole, a method of manufacturing the shoe sole as shown in FIGS. 9 and 10 has been provided. For example, the molding mold for the sole shown in FIG. 9 is a combination of a concave mold 11 having a recess 12 provided with one partitioning projection wall 13 and a convex mold 14, and the molding mold for the sole shown in FIG. This is a combination of a concave mold 15 having two partitioning projection walls 17 in a concave part 16 and a convex mold 18.
Each of these molding molds has a partition wall 13 or 1
It was intended to separate the bottom materials from each other at their boundaries by means of No. 7 and prevent each bottom material from penetrating into each other.

However, in such a prior art, since the projecting wall for partitioning the bottom material is simply formed in a convex shape, the bottom material is a partition projecting wall due to a slight change in molding pressure or the amount of the bottom material. It was impossible to obtain a desired shoe sole because the boundary lines became unclear due to the disorder and mixing with each other.

[0004]

SUMMARY OF THE INVENTION According to the present invention, the concave shape of the molding mold or the concave shape of the molding mold is provided corresponding to the corresponding portion of the joining piece of each shoe sole material made of a different material or a different color material supplied into the molding mold of the shoe sole. A fitting component that can be detachably attached to the convex shape is installed, and the shoe sole material at the boundary line is efficiently introduced and guided into the fitting component. It is a technical object to provide a molding mold for a shoe sole that does not stick out to one side and can clearly partition the design surface of the joint portion.

[0005]

In order to solve the above-mentioned problems, the present invention employs the following technical means. That is, it is composed of a concave type and a convex type forming a shoe sole-shaped cavity, and a fitting component, and the fitting component is detachably fitted into a partition concave groove of an appropriate shape provided in the concave type or the convex type. And a pair of split dies that are separated from each other, and a through hole for retaining the sole material is formed in the middle of the interior of the split dies when the split dies collide with each other, and the shoe sole is provided on one edge side of the abutment portion. It is formed by forming a slight inductive gap into which the material flows.

[0006]

According to the shoe sole molding mold of the present invention, the concave mold or the convex mold of the molding mold has a concave groove partitioned by an appropriate shape, and the fitting component is detachably provided in the concave groove. In addition, the fitting component is not a split mold, and a through hole for retaining the bottom material is provided in the middle of the interior of the split mold when the split mold is abutted. Therefore, when molding shoe soles of different colors and different materials, the bottom material of the joint ends of the mating parts is formed by a molding pressure of the molding mold from a slight guide gap provided on the abutting surface of the mating parts to a through hole in the middle of the mating parts. Can be efficiently induced and retained. Therefore, when molding is completed, the fitting component is pulled out from the molding mold, and if the split mold is separated, the residual bottom material staying in the through hole in the fitting component appears as a rod, and it is connected to this to form a thin coating layer, That is, the sole material remaining in the induction gap portion provided on the abutting surface of the fitting component can be taken out as a thin film layer. After that, the finished product can be obtained by removing the film portion, so-called hem portion.

Therefore, according to the present invention, the joint ends of the shoe soles of different colors and different materials are made to efficiently flow into the internal through holes in the fitting parts,
After that, since the humped portion can be easily removed, it is possible to effectively divide the joint portion between the both.

[0008]

EXAMPLE A typical example of the molding mold A for shoe sole according to the present invention will be described below with reference to the drawings.
1 to 3 show a concave mold a and a convex mold b that form a shoe-shaped cavity. A concave groove 1 that is appropriately partitioned is formed at a desired portion of the convex mold b. In the figure, the fitting component c is detachably fitted. At this time, each fitting part c is formed as a pair of split molds which are separated as shown in FIG. A slight guide gap 3 is formed on the side of the mating surface corresponding to the bottom material. Further, the fitting part c is in a strip shape having an elongated shape so as to correspond to the partition groove.

Then, the molding mold A for the sole according to the present invention.
The method of using is as follows. First, the fitting parts c, c, which are paired with each other by the two pieces shown in FIG. 8, and the concave mold a and the convex mold b shown in FIGS. 1 and 2 are prepared, and are formed at predetermined positions of the convex mold b. The fitting parts c are inserted and fitted into the concave grooves 1. At this time, as shown in FIG. 3, each fitting part c is provided with a guide gap 4 at any abutting portion at a position where it can be seen from the groove edge side of each concave groove 1, that is, the side corresponding to the concave portion 4 of the concave die a. Has been. Next, a plurality of different or different shoe sole materials 5, 6 and 7 were previously cut into a shape substantially matching the partition shape of each fitting component c of the convex mold b, and cut into these desired shapes. The shoe sole materials 5, 6 and 7 are supplied to predetermined positions in the concave portion 8 of the concave mold a. At this time, the partition section positions of the shoe sole materials 5, 6 and 7 are just installed at positions corresponding to the abutting portions 3 of the fitting parts c in the concave grooves 1 of the convex mold b. Next, after the sole materials 5, 6 and 7 are supplied to the predetermined positions in the concave portions 8 of the concave mold a, the concave mold a is sealed with the convex mold b as shown in FIG. Means, for example, under the temperature of 130-150 ° C., 120-
If heat and pressure treatment is performed at a pressure of 150 Kg / cm ² for 3 to 5 minutes, the shoe sole materials 5, 6 and 7 are adjacent to the shoe sole material, and the corresponding edge portions do not disturb each other and the fitting parts It is pressed into the guiding gap 4 of the abutting portion 3 of c and flows into the through hole 2. After the heating and pressurizing process is completed, the convex mold b is removed from the concave mold a, and the molded product is taken out from the concave mold a. As shown in FIG. 7, a shoe sole composed of a plurality of different colors or different kinds of parts. B can be obtained.

More specifically, when the shoe sole B is actually taken out from the molding mold, the shoe sole material is pulled up while the fitting parts c are connected. After that, mating parts c
Is divided into two, the guiding gaps 3 and 3 of the abutting part and the through hole 2
The extra shoe sole material introduced therein appears in a so-called hami state, and the work is completed by removing the hami portion, and the desired shoe sole is obtained. At this time, the shoe sole material 5, 6
Ordinary shoe sole materials such as natural rubber, synthetic rubber or an appropriate mixture thereof may be used as and 7. At this time, the fitting component c that is detachably fitted into the molding mold may be provided with an appropriate hook so as not to easily fall out from each groove 1 of the convex portion b, or may have a shape that does not easily come off. . Although not shown, the fitting component c can be fitted not only in the concave groove 1 provided in the convex mold b but also in the concave mold a. Further, the shape of the hollow portion of the through hole 2 may be, of course, not only the one having an arcuate cross section as shown but also a rectangular cross section. Further, it is of course possible to devise the guide gap so that the bottom material is slightly opened toward the oral cavity so that the bottom material can easily flow into the guide gap.

[0011]

Therefore, according to the present invention, the joint ends of the shoe soles of different colors and different materials are made to flow into the internal through holes in the fitting parts which are detachably fitted in the molding mold, and then the joint portion is cut off. Since it is completely removed, the joint portion between the two can be clearly divided and a product with high commercial value can be provided. Moreover, in particular, the fitting component can be made to have a slightly larger size of the through hole 2 so that the shoe sole material can be efficiently introduced. Further, since the manufacturing process is simple, the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic diagram of an entire inclined surface of a concave mold of a shoe sole molding mold according to the present invention.

FIG. 2 is likewise a schematic view of the entire convex slope.

FIG. 3 is likewise a schematic perspective view of the entire sloped state in which the fitting parts are inserted and fitted into the convex shape.

FIG. 4 is a schematic partial cross-sectional view of a molding mold during which the sole material is supplied into the concave mold and the convex mold to perform heat-press molding.

FIG. 5 is also a partially enlarged cross-sectional schematic view of the molding mold showing a state when the shoe sole material in the concave mold and the convex mold is supplied.

FIG. 6 is also a partially enlarged cross-sectional schematic view of the shoe sole material in the concave shape and the convex shape in a state of being heated and pressed.

FIG. 7 is an overall bevel schematic view of a shoe sole formed by a shoe sole molding mold according to the present invention.

FIG. 8 is likewise an enlarged schematic view of a part of the fitting part inserted into the convex groove.

FIG. 9 is a schematic sectional view showing a conventional mold for molding a shoe sole.

FIG. 10 is a schematic sectional view showing another molding mold for the sole of the shoe.

[Explanation of symbols]

 A Sole molding mold B Sole a Concave b Convex c Fitting part 1 Recessed groove 2 Through hole 3 Abutment part 4 Induction gap 5, 6 and 7 Sole material 8 Recessed part

Claims (1)

[Claims] 1. A concave mold a and a convex mold b forming a shoe-shaped cavity, and a fitting component c, which is a partition of an appropriate shape provided in the concave mold a or the convex mold b. A pair of split molds which are detachably fitted in the groove 1 and are separated from each other, and when the split molds are abutted with each other, a through hole 2 for retaining the shoe sole material is formed in the middle of the interior thereof. With
A molding mold for a shoe sole, characterized in that a slight guiding gap 4 for letting in a shoe sole material is formed on one edge side of the abutting portion 3.