JPH0630806A - Manufacture of injection-molded shoe - Google Patents

Abstract

PURPOSE:To provide a method of manufacturing injection-molded shoes, which can efficiently produce injection-molded shoes having a number of colors which is larger than that of injection-molded shoes conventionally produced. CONSTITUTION:A last 10 from which an instep 11 hangs, a side 20, a first dummy 30 and a bottom 50 are assembled together. Thereafter, a molding material 61 for an outsole is injected through a first filling port 51 formed in the bottom 50, and then, a molding material 2 for the front-half part of a heel, is injected through a second filter port 52 formed in the bottom 50. Next, a molding material 63 for the rear half part of the heel, and the front and rear parts of a tread, is injected through a third filler port 53 formed in the bottom 50, and then, a molding material 64 for a top sole is injected through a fourth filler port 23 formed in the side 20. After the first dummy 30 is replaced with a second dummy 40, a molding material for a shaping part enclosed in the front half part of the heel is injected through a fifth filter port 41 formed in the second dummy 40. Further, after removal of the second dummy 40, the side 20 and the bottom 50 are directly assembled together, and then a molding material for a midsole is injected through a sixth filler port 24 formed in the side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an injection-molded shoe having a multicolored multi-layered partial sole.

[0002]

2. Description of the Related Art As an injection-molded shoe having a multicolor, multi-layered partial sole, there is conventionally an injection-molded shoe using five colors.

[0003]

However, customers are not satisfied with this, and have come to demand multicolor injection-molded shoes using more colors.

The present invention has been made in order to meet such a demand, and an object thereof is to provide a method of manufacturing an injection-molded shoe that can efficiently injection-mold an injection-molded shoe having more colors than ever before. It is in.

[0005]

According to the present invention, a) After assembling a last mold in which a cover is suspended, a side mold, a first dummy mold and a bottom mold, a first injection port formed in the bottom mold is used. Injection-filling the outsole molding material, b) then injection-filling the heel first half molding material from the second injection hole drilled in the bottom mold, and c) the third injection punched in the bottom mold. Injection-filling the heel second half, front tread and rear tread molding material from the inlet, d) then injection-filling the topsole-forming material from the fourth injection hole formed in the side mold, e ) Next, after replacing the first dummy mold with the second dummy mold, a design part molding material to be sealed in the front half of the heel part is injection-filled from the fifth injection hole formed in the second dummy mold, and f). Then before A method for manufacturing an injection-molded shoe, characterized in that the second dummy mold is removed, the side mold and the bottom mold are directly assembled, and then a midsole molding material is injection-filled from a sixth inlet formed in the side mold. Is provided.

[0006]

After assembling the last mold, the side mold, the first dummy mold, and the bottom mold in which the cover is suspended in this way, the outsole molding material is injected and filled from the first injection port formed in the bottom mold, Next, the first half of the heel part molding material is injected and filled from the second injection hole formed in the bottom mold, and then the third material formed in the bottom mold is injected.
Injection molding is performed from the second half of the heel, the front of the tread, and the rear of the tread from the injection port, and then the topsole-forming material is injection-filled from the fourth injection port formed in the side mold. 1 After replacing the dummy mold with the second dummy mold, injection-filling the design part molding material enclosed in the front half of the heel part from the fifth injection hole formed in the second dummy mold,
Next, after removing the second dummy mold and directly assembling the side mold and the bottom mold,
By injecting and filling the midsole molding material from the sixth inlet formed in the side mold, an injection-molded shoe having more colors than ever can be efficiently injection-molded.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, a method of manufacturing an injection-molded shoe using 6 colors is taken as an example.

In FIG. 1, 10 is a last mold in which a cover 11 is suspended, 20 is a side mold, and 30 is a first mold.
A dummy mold, 50 is a bottom mold, and a cover 1
The last mold 10 in which 1 is suspended descends, the left and right side molds 21 and 22 are closed, and the first dummy mold 3
When 0 enters the center and the bottom mold 50 rises, these molds 10, 20, 30, 50 are assembled. At this time, on the left side of the first dummy mold 30,
The second dummy mold 40 is on standby.

Therefore, the first mold formed in the bottom mold 50
Outsole molding material 6 containing green pigment from the inlet 51
When 1 is injection-filled, as shown in FIGS. 4 and 5, a green outsole 61a is molded.

Next, the front half of the heel part molding material 62 made of a transparent synthetic resin is injection-filled from the second injection port 52 formed in the bottom mold 50, and as shown in FIGS. 4 and 5, the transparent heel part is formed. The first half 62a is molded.

Next, injection molding is performed from the third injection port 53 bored in the bottom mold 50 with the latter half of the heel part, the front part of the tread part, and the rear part of the tread part 63 containing purple pigment. As shown in FIG. 5, a purple rear half 63a, a front tread 63b and a rear tread 63c are formed.

Next, the top sole forming material 64 containing a blue pigment is injected from the fourth inlet 23 formed in the side mold 20.
Is injected and filled, a blue top sole 64a is formed as shown in FIG.

Next, as shown in FIG. 2, instead of the first dummy mold 30, a second dummy mold 40 is assembled between the side mold 20 and the bottom mold 50 and then punched in the second dummy mold 40. When the design part molding material 65 containing a red pigment is injected and filled from the fifth injection port 41, the red design part 65a is molded in the void of the heel part front half part 62a as shown in FIGS. 4 and 5.

Next, as shown in FIG. 3, after removing the second dummy mold 40 and directly assembling the side mold 20 and the bottom mold 50, the side mold 20 is removed.
When a midsole molding material 66 containing a white pigment is injection-filled from the sixth injection port 24 drilled in, as shown in FIG.
A white midsole 66a is formed.

As described above, in this embodiment,
Last mold 10 with side cover 11 suspended, side mold 20, first dummy mold 30, and bottom mold 5
After assembling 0, the first hole was put on the bottom mold 50.
A green outsole molding material 61 was injected from the injection port 51, then a transparent front heel half molding material 62 was injected from the second injection port 52 which was bored in the bottom mold 50, and then a bottom mold 50 was bored. A fourth injection port 2 formed by injection-filling purple second half of the heel part, front part of the tread part, and rear part of the tread part from the third injection port 53 and then punched in the side mold 20
3, the blue topsole forming material 64 is injected, the first dummy mold 30 is replaced with the second dummy mold 40, and then the red design part is molded from the fifth injection port 41 formed in the second dummy mold 40. The material 65 is injected and then the second dummy mold 40 is removed to remove the side mold 2
0 and the bottom mold 50 were directly assembled, and the white midsole molding material 66 was injected from the sixth injection port 24 formed in the side mold 20, so that an injection-molded shoe using 6 colors with a larger number of colors than before can be obtained. Can be injection-molded efficiently.

Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and modifications and the like within the scope of the invention are included in the present invention. Is.

That is, the outsole is green, the front half of the heel is transparent, the rear half of the heel, the front of the tread and the rear of the tread are purple, the top sole is blue, the design is red, and the midsole is white. However, the coloring and the shape of the sole of the shoe are not limited to these. Further, in the present invention, the design part molding material to be enclosed in the front half of the heel is not limited to injection filling, but may be a preformed material incorporated in a mold and enclosed.

[0018]

As described above, according to the present invention, it becomes possible to efficiently injection-mold an injection-molded shoe using six colors, which has more colors than ever before.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a state in which a last mold, a side mold, a first dummy mold, and a bottom mold are assembled in carrying out the method of the present invention.

FIG. 2 is an explanatory view showing a state in which a last mold, a side mold, a second dummy mold and a bottom mold are assembled in carrying out the method of the present invention.

FIG. 3 is an explanatory view showing a state in which a last mold, a side mold, and a bottom mold are assembled in carrying out the method of the present invention.

FIG. 4 is a side view of an injection-molded shoe manufactured by the method of the present invention.

FIG. 5 is a bottom view of an injection-molded shoe manufactured by the method of the present invention.

[Explanation of symbols]

10 Last mold 11 Cover 20 Side mold 23 4th inlet 24 6th inlet 30 1st dummy mold 40 2nd dummy mold 41 5th inlet 50 Bottom mold 51 1st inlet 52 2nd inlet 53 3rd Injection port 61 Outsole molding material 62 Heel front half molding material 63 Heel rear half, front tread and rear tread molding material 64 Topsole forming material 65 Design part molding material 66 Midsole molding material

Claims (2)

[Claims] 1. A) After assembling a last mold, a side mold, a first dummy mold, and a bottom mold in which a cover is suspended, an outsole molding material is injection-filled from a first injection port formed in the bottom mold. B) Next, injection-fill the first half of the heel part molding material from the second injection hole formed in the bottom mold, and c) Next, the third half injection part of the heel part from the third injection hole formed in the bottom mold. Injection-filling the front part of the attachment part and the rear part of the tread part, d) then injection-filling the topsole-forming material from the fourth injection hole formed in the side mold, and e) the first dummy mold. Is replaced with a second dummy mold, and then a design part molding material to be enclosed in the front half of the heel is injection-filled from a fifth injection hole formed in the second dummy mold, and f) the second dummy mold is then filled. take The side mold and the then assembled with the bottom mold directly, a manufacturing method of injection molding shoe, characterized in that injected and filled the midsole molding material from the sixth inlet bored on the side mold I. 2. The method of manufacturing an injection-molded shoe according to claim 1, wherein the molding material of the front half of the heel is transparent.