JPH03109001A - Manufacture of healthy shoes - Google Patents

Abstract

PURPOSE:To simplify a manufacturing process and improve manufacturing efficiency by molding an arch cushion and a shoe bottom integrally at a section corresponding with the recessed sections of a shoe mold for containing shoe bottom molding material contained in a metallic mold and pushing an intermediate bottom upward with the shoe bottom material at the same time as the shoe bottom is molded. CONSTITUTION:A shoe mold 4 is covered with an instep cover 7, and the lower peripheral edge is suspended on an intermediate bottom 8 molded by nonwoven fabric or the like, namely, by material which is easily deformed by applied pressure. Then, the intermediate layer 8 is set in a metallic mold so that a space 12 may be formed between the layer 8 and a rubber main-bottom 11, and when the space 12 is impregnated with urethane resin solution, then the urethane resin is foamed, and is bonded to the intermediate bottom 8 and the main bottom 11, and a shoe bottom 13 is molded and at the same time, a section corresponding with a recessed section 5 and a recessed section 6 in the urethane resin is projected to fill spaces 9, 10 at the same time as the intermediate bottom 8 is deformed with the foaming pressure of said section, and an arch cushion 14 and an internal foot pat 15 are integrally molded with the shoe bottom 13. As a result, a manufacturing process is simplified, and manufacturing is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing shoes that prevent foot fatigue and maintain foot health.

[Conventional technology]

The sole of the human foot has three arches: two longitudinal arches, medial and lateral, and a transverse arch in the forefoot.
The inner vertical arch in particular is large and visible from the outside as the arch of the foot.

These arches act as springs that cushion the cushion when you land when you walk and help shift the weight load on the soles of your feet from the outside to the inside. Continuing to carry weight for a long time not only causes fatigue of the foot muscles, but also pushes down the talus of the foot, lowers the navicular bone, overstrains the plantar fascia, and overstrains the deltoid ligament. Scientists have reported that the skeletal structure of the foot is deformed in the order that heel curvature occurs, resulting in arch depression, resulting in foot fatigue, foot pain, and foot deformity.

Therefore, health shoes have been provided that are provided with an arch cushion that protrudes from the inner surface of the sole so as to push up the inner arch of the foot.

[Problem to be solved by the invention]

As shown in FIG. 7, the above-mentioned conventional health shoes have an arch cushion 2 formed of a cushioning material such as sponge fixed to a portion of the insole 1 corresponding to the inner arch of the foot, and Since the cushion 2 was manufactured so as to be covered with the insole 3, the manufacturing process was complicated and time consuming, and the manufacturing cost was accordingly high.

The purpose of the present invention is to provide a method for manufacturing health shoes that can eliminate such drawbacks. [Means for Solving the Problem] A shoe upper is placed over a shoe shape that has a recess cut out in the shape of the inner arch, and the upper is hung over an insole made of a material that easily deforms when pressed, such as non-woven fabric. A shoe sole molding mold is fitted to the lower surface, and a urethane resin or other shoe sole molding material is put into the mold so that the shoe sole is molded and simultaneously attached to the lower surface of the midsole.

[Effect]

Put the shoe sole molding material into the mold and mold the shoe sole. At the same time, push up the midsole with the shoe sole material and mold the arch tension integrally with the shoe sole in the part corresponding to the concave part of the shoe shape. .

〔Example〕

A detailed description of the present invention will be given below based on the drawings.The numeral 4 is shoe-shaped, and the bottom part has a recessed part 5 cut out in the shape of the inner arch of the foot, and a part slightly forward of the unstepped part of the sole. It has a recess 6 hollowed out in the shape of the midfoot pad to be pressed. Reference numeral 7 denotes a shoe upper, and the shoe upper 7 is placed over the shoe mold 4 as shown in the second figure, and its lower periphery is suspended in an insole 8 formed of a material that easily deforms under pressure, such as nonwoven fabric.

Then, spaces 9 and 10 are formed inside the portions of the shoe upper 7 and the midsole 8 that correspond to the recesses 5 and 6, and the other portions are tightly attached to the shoe shape 4. Insole 8 in this state
is set in a mold (not shown) with a gap 12 between it and the rubber outsole 11, and when urethane resin liquid is injected into the gap 12, the urethane resin foams and forms a bond between the inner sole 8 and the main sole. At the same time that the shoe sole 13 is bonded to the sole 11 and molded, the portions of the urethane resin corresponding to the recesses 5 and 6 are
As shown in the figure, the foaming pressure deforms the midsole 8 and bulges to fill the space 9 and 10, creating an arch 1.
4 and a middle foot pad 15 are integrally molded with the sole 13.

When forming the arch cushion 14, an outer arch 16 protruding from the bottom 13 is simultaneously formed on a portion of the outer surface of the upper 7 that faces the arch cushion 14. This outer arch 16 functions to reinforce the arch traction 14 so that it does not escape when the shoe wearer steps on it.

The present invention is not limited to the above-mentioned embodiments. For example, the insole 8 may be made of not only a non-woven fabric, but also two layers of non-woven fabric with a resin film sandwiched between them, and other types of soles made using pressure during molding. In some cases, various materials that are easily deformed are used, and in some cases, the outsole 11 is omitted and the shoe sole 13 is molded directly onto the inner sole 8 from urethane resin, and the shoe sole 13 is made of a material other than urethane resin. In some cases, the middle foot pad 15 is omitted and a shoe-shaped shoe is used in which only the arch cushion 14 is molded, and the outer arch 16 is not molded and the inside of the shoe upper 7 is molded. Extending the moon-shaped core to the part facing the archi- tion 14,
Change the design as appropriate, such as using it for reinforcement.

〔Effect of the invention〕

Since the present invention is constructed as described above, the arch cushion or the arch cushion and the insole pad can be molded at the same time as the sole of the shoe, which simplifies the manufacturing process of health shoes and further improves manufacturing efficiency. It has advantages such as improved manufacturing cost and reduced production cost.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and Fig. 1 is a side view of a shoe-shaped shoe, and Fig. 2 shows a shoe-shaped shoe covered with a shoe cover, with a part cut away and suspended in the midsole. Figure 3 is a cross-sectional view of the state shown in Figure 2, and Figure 4 is a side view of the state in which the sole is approached, and Figure 4 is the state in which the sole, arch, and midfoot pad are molded into the upper. 5 is a side view of the molded outer arch, FIG. 6 is a sectional view showing the positional relationship between the arch cushion, midfoot pad, and outer arch, and FIG. 7 is an example of conventional health shoes. It is a cross-sectional view showing 4... shoe shape, 5... recess, 6... recess, 7...
・Instep, 8... Insole, 13... Sole, 14...
Articulation 15... Middle foot pad.

Claims (2)

[Claims] (1) A shoe instep is placed over a shoe shape that has a recess cut out in the shape of the inner arch of the foot, and the shoe instep is hung over an insole made of a material that easily deforms under pressure, such as non-woven fabric. Fit the shoe sole mold on the underside of this midsole,
A method for manufacturing healthy shoes, characterized in that a urethane resin or other shoe sole molding material is placed in the mold to mold the shoe sole and at the same time attach the sole to the lower surface of the midsole. (2) The health according to claim 1, wherein the shoe-shaped bottom is provided with a recess that is hollowed out in the shape of a midfoot pad that protrudes so as to press a portion slightly in front of the rest of the foot. Shoe manufacturing method.