KR100887661B1 - Footwear and its manufacturing method - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe and a method of manufacturing the same. In the prior art, when manufacturing a shoe through a cement method or an injection method, an exhaust device or shock absorbing device is manufactured by separately manufacturing an exhaust device or a shock absorbing device and then forming a midsole. There is a problem in that the cost is excessively manufactured separately and the structure of the exhaust device or shock absorber is very complicated and the assembly process is excessive.

Accordingly, the present invention, as shown in Figure 5 to Figure 11, forming a bottom protrusion 210 and the heel protrusion 220 on the bottom of the insole 200, respectively, a plurality of bottom protrusions 212 and The heel protrusion 222 is formed, and the bottom cap 210 and the heel heel 220 are provided with a bottom cap 230 and a heel cap 240, respectively, and the bottom cap 230 and the heel cap on the midsole 300. By making the insole 200 separate from the upper 100 as needed, the insole 200 is freed, so that the insole 200 can be washed as needed, so that the insole 200 can be kept clean. By the bottom protrusion 210 and the heel protrusion 220 of the insole 200 having elasticity is to be absorbed by the body load as well as the intake and exhaust action by a plurality of vent holes (50).

Shoes, midsole, insole, sole

Description

Footwear and Manufacturing Method Thereof

1 is an exploded perspective view for showing the structure of a typical shoe,

2 is a schematic plan view of a rotary press machine which is a general shoe manufacturing apparatus;

3 is a partial side view of the rotary press machine of FIG. 2, a side view of a state in which the raw liquid in a molten state is injected into a mold for forming soles;

4 is a side view showing a state in which the upper is placed on the support frame for forming the midsole using a rotary press;

5 is an exploded perspective view showing the upper and insole of the shoe according to the present invention;

Figure 6 is a perspective view of the insole is coupled to the upper of the shoe according to the invention

7 is a side view of the upper of the shoe according to the present invention before being integrated with the sole is mounted on the rotary press machine,

8 is a side view of a state in which the upper of the shoe according to the present invention is mounted on a rothoscope and is integral with the sole;

9 is a longitudinal cross-sectional view of FIG. 7;

10 is a longitudinal cross-sectional view of FIG. 8.

<Explanation of symbols for the main parts of the drawings>

100: upper, 110: outsole,

112: bottom hole, 114: heel hole,

200: insole, 210: bottom protrusion,

212: bottom projection, 220: heel protrusion,

222: heel protrusion, 230: bottom cap,

240: heel cap, 300: midsole.

The present invention relates to a shoe and a method for manufacturing the same. More specifically, in forming an insole by an injection method between the upper and the sole, by inserting the insole having a breathable cushion part in the upper to form a midsole, the cushion force The present invention relates to a shoe and a method of manufacturing the same, which may improve breathability and at the same time ensure breathability.

In general, the structure of the shoe is composed of a sole, midsole, upper and a separate insole is embedded in the upper, the sole is formed of a hard and durable material in direct contact with the ground, the midsole is the body of the user wearing the shoe It is molded of urethane material with cushioning force to absorb the ground impact caused by load, and the upper is made of a material (leather or fabric paper) that gently covers the wearer's instep and makes contact with the wearer's sole. The upper sole is made of a material (generally nonwoven fabric), and the insole is made of a material (foamable urethane) that is easy to clean as needed while in direct contact with the sole of the user.

In addition, in recent years, the sole of the insole, which supplements the cushioning power of the midsole, further improves the feel of the wearer's foot and reduces the impact of the ground shock due to the body load on the wearer, or separates the impact between the midsole and the upper. A device or an exhaust device is installed.

The shoe manufacturing method as described above is divided into a cement method and an injection method, which is described simply. The cement method applies a press of a liquid resin into a mold to apply a press to form an outsole. Injecting the liquid resin again to compress the upper to form a midsole is molded to form a unit, the injection method is to inject the liquid resin into the mold frame consisting of the upper and lower, forming the sole and separating the upper mold After that, the ankle-type upper is placed on the lower mold to form a constant space with the sole by injecting a liquid resin is a manufacturing method for forming the upper and the sole as a midsole molded.

Accordingly, the present invention has a "apparatus and method for manufacturing safety shoes equipped with an exhaust device" of Korean Patent Registration No. 201321, which the applicant has previously filed and registered, and also applied for a patent for shoes and a method of manufacturing the same, which are currently being applied for examination. No. 06-88413 is an improvement. (The above Patent Registration No. 201321 and Patent Application No. 06-88413 are hereinafter referred to as the conventional invention)

As the conventional invention shoes are represented in Figure 1, the sole 2, the midsole 3 and the upper 4, but the sole 2 is molded of a hard resin having abrasion resistance, the midsole ( 3) is formed of a resin having a cushioning force, the upper (4) is composed of an upper body (5) and a sole (6) forming the bottom of the upper body made of leather or fabric paper surrounding the user's feet The main body 1 is formed.

In addition, the shoe having the structure as described above, as shown in Figure 2, a plurality of injection molding machines 12 are radially installed on the circular rotating disk 11 at equal intervals, the same as the rotating disk 11 The work table 13 of the shape is installed, and the first injection liquid feeder 14 for sole molding and the second feed liquid feeder 15 for midsole molding are installed on both sides of the straight line is a shoe manufacturing machine It is manufactured using the apparatus 10.

Referring to the shoe and the manufacturing apparatus and the manufacturing method of the above structure in detail, as shown in Figure 3 to Figure 4, the injection molding machine 12 is rotated around the rotating part 16 on the top The ankle mold is provided with a support frame 17 and an upper mold 18 for molding the sole, and a lower mold for forming the sole and midsole in a position (vertical downward direction) corresponding to the upper mold 18 ( 19) is installed and shoes are manufactured using cement method or injection method.

The cement method of the shoe manufacturing method is to attach an exhaust device (not shown in the drawing) to the upper 4 fixed to the support frame 17, and to seal the outside by attaching a blocking plate having an adhesive layer to the exhaust device. After the support frame 17 is rotated about the rotating part 16 in a vertical state to be positioned vertically above the lower mold 19, the two-dimensional liquid, which is a foamable resin material, is lowered through the two-dimensional liquid injector 15. Put the mold into a mold to mold the midsole, and the support frame 17 to which the upper 4 is fixed is vertically lowered before the midsole, which is a two-dimensional solution of the expandable resin material, is embedded so that an exhaust device or an impact relief device is embedded in the midsole. It is a method of manufacturing.

In addition, the injection method is to vertically lower the upper mold (18) to the lower mold (19) to form a certain space, and then press the injection of a non-foamable resin material in the molten state through the one-dimensional liquid feeder 14 to the sole (2) ) Is molded and rotates to the two-dimensional liquid supply (15) side, at which time the support frame (17) with an ankle (4) is covered with the upper (4) by rotating the rotary part 16 of the injection molding machine (12) When facing the two-dimensional liquid supply (15) while descending toward the lower mold (19) side, the sole (2) formed in the upper (4) and the lower mold and a predetermined space (space in which the midsole is molded) 2 It is a method of manufacturing so that the exhaust device or the shock absorber is embedded in the midsole by injecting the dimensional fluid.

Shoes manufactured by the method of cement and injection method as described above is provided with an exhaust device or an impact relief device in the midsole, it is possible to prevent the sweat on the soles of the wearer in advance and from the ground due to the body load It will have the advantage of absorbing the impact of.

However, in the case of manufacturing the midsole by using the cement method, the support frame inserts the liquid urethane resin into the lower mold in which the sole is formed, and then vertically lowers the support frame on which the upper is installed, thereby forming the midsole. The phenomenon that the urethane resin squeezed out to the circumference has occurred, there is a problem that the after-treatment work is required to be carried out to compress the midsole and shave the circumference of the midsole.

In addition, in the manufacturing of the shoe through the cement method or the injection method as described above, by separately manufacturing the exhaust device or shock absorber and then molding the midsole excessively the cost of separately manufacturing the exhaust device or shock absorber. There was a problem that the assembly and the assembly process is very complicated because the structure of the exhaust device or the shock absorber is very complicated.

Accordingly, the present invention was invented to solve the above problems, in the process of molding the midsole, so that the cushioning portion having a breathable between the upper (shoe body) and the midsole of the foamed urethane material is provided with impact absorption and breathability An object of the present invention is to provide a shoe and a method of manufacturing the same.

In addition, there is another object to simplify the assembly process by reducing the manufacturing cost and the process of the shoe by making the cushioning unit with the breathable integral with the insole in the upper.

The present invention for achieving the above object is to form a bottom hole and a heel hole of a predetermined shape in a position in contact with the sole of the sole and the center of the heel of the sole forming the bottom of the upper, the bottom of the insole A bottom heel and a heel are formed to have the same bottom protrusion and heel, and a plurality of bottom protrusions and heel protrusions are formed in the bottom protrusion and the heel, respectively, and the bottom cap and the heel are respectively formed on the bottom protrusion and the heel. By installing a cap, the bottom projection and the heel can be stretched in a certain space, and the sole and the heel cap are buried in the midsole so that the insole is separated from the upper as needed. .

In addition, the shoe manufacturing method is a general shoe manufacturing method consisting of a sole molding step, upper molding step, midsole molding step, exhaust or shock absorbing device installation step, insole molding step, the sole of the sole and the heel of the user's sole in the upper sole A hole forming step of forming a bottom hole and a heel hole where the center of the hole is located; An insole molding step of forming a bottom protrusion having a plurality of bottom protrusions and a heel protrusion having a plurality of heel protrusions on the bottom of the insole; And the cap forming step of having an inner surface that matches the outer circumference of the bottom protrusion and the heel stone portion forming the bottom cap and the heel cap; Characterized by a shoe manufacturing method comprising an assembly step of assembling the bottom cap and the heel cap to the bottom protrusion and the heel protrusion of the sole.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Exemplary Figure 5 is an exploded perspective view showing the upper and the insole of the shoe according to the invention, Figure 6 is a perspective view of the insole is coupled to the upper of the shoe according to the invention, Figure 7 is an upper of the shoe according to the invention Is a side view of the state before it is mounted on the rotary press machine and integral with the trust window, and FIG. 8 is a side view of the upper of the shoe according to the invention mounted on the rotatable press machine and integral with the sole, and FIG. 9 is an example 7 is a vertical cross-sectional view of FIG. 7, and FIG. 10 is a vertical cross-sectional view of FIG. 8.

As represented in the above and the drawings, the present invention is a shoe made of an insole and a midsole having a cushioning force and a durable sole, the insole 110 that forms the underside of the upper 100, the user insole A bottom hole 112 and a heel hole 114 having a predetermined shape are formed at a position where the central portion of the sole and the heel of the foot contact each other, and the bottom protrusion 210 that is identical to the outer shape of the bottom hole 112 at the bottom of the insole 200. ) And the same heel protrusion 220 as the outer shape of the heel hole 114, and a plurality of bottom protrusions 212 and heel protrusions 222 in the bottom protrusion 210 and the heel protrusion 220, respectively. The bottom protrusion 210 and the heel protrusion 220 are provided with a bottom cap 230 and a heel cap 240, respectively, to allow the bottom protrusion 210 and the heel protrusion 220 to be stretchable in a predetermined space. In the midsole 300, the bottom cap 230 and the heel cap 240 to form a buried state insole 200 is required According to the upper 100, characterized in that the shoes are free to separate coupling.

In addition, the shoe manufacturing method is a general shoe manufacturing method consisting of a sole molding step, upper molding step, midsole molding step, exhaust or shock absorbing device installation step, insole molding step, the sole of the sole and the heel of the user's sole in the upper sole A hole forming step of forming a bottom hole and a heel hole where the center of the hole is located; An insole molding step of forming a bottom protrusion having a plurality of bottom protrusions and a heel protrusion having a plurality of heel protrusions on the bottom of the insole; And the cap forming step of having an inner surface that matches the outer circumference of the bottom protrusion and the heel stone portion forming the bottom cap and the heel cap; Characterized by a shoe manufacturing method comprising an assembly step of assembling the bottom cap and the heel cap to the bottom protrusion and the heel protrusion of the sole.

50 is not described in the reference numerals are vent holes formed in the bottom protrusion 210 and the heel protrusion 220 of the insole 200, 52 is to support the shape of the upper 200 and the support frame ( 17 ) In the description of the foot-shaped wooden mold fixed to the following, the same components as in the conventional invention and the shoe manufacturing apparatus will be described using the same reference numerals.

The present invention made as described above forms the bottom hole 112 and the heel hole 114 of a predetermined shape in a position where the sole of the wearer's sole and the center of the heel are in contact with the sole 110 forming the bottom of the upper 100. On the bottom surface of the insole 200, the bottom protrusion 210 and the same as the outer shape of the bottom heel hole 114, the same as the outer shape of the heel hole 114 is formed, and the bottom protrusion 210 and the heel Inside the protrusions 220, a plurality of bottom protrusions 212 and heel protrusions 222 are formed, respectively, and the bottom protrusions 210 and heel protrusions 220 are bottom caps 230 and heel caps 240, respectively. It consists of a structure that combines (see Example 5).

The upper 100 is located in the upper portion of the sole 2 in the above state, the sole 110 of the upper 100, the bottom protrusion 210 and the heel formed on the bottom of the insole 200 The protrusion 220 is positioned in a state where the bottom cap 230 and the heel cap 240 are coupled to each other (see Example 6).

If it is described in more detail the state manufactured using the general shoe manufacturing apparatus 10, as shown in Figure 7 to Figure 8, the rotating part 16 of the injection molding machine 12 is rotated to support the frame ( The upper 100 is coupled to the wooden mold 52 installed on the support frame 17 in a state in which the vertical direction 17 is directed, and the insole 200 is coupled to the upper 100. .

The insole 200 coupled to the upper 100 includes a bottom hole 112 and a bottom heel portion 220 protruding from the bottom surface of the insole 200 formed in the sole 110 of the upper 100. A bottom cap 230 and a heel cap 240 are coupled to the bottom protrusion 210 and the heel heel 220 while forming a state fitted to the heel hole 114. A certain amount of space will be secured.

In the above state, when the support frame 17 vertically descends and comes into contact with the lower mold 19 to which the sole 2 is injected, a two-dimensional liquid is formed while a predetermined space is formed between the upper 100 and the sole 2. The two-dimensional liquid, which is a foamed urethane resin, is injected to the feeder 15, and the midsole 300 is molded to form the upper 100 and the sole 2.

As described above, the foamed urethane resin is injected by the two-dimensional liquid supplyer 15 to form the midsole 300, and the support frame of the injection molding machine 12 in the state in which the sole 2 and the upper 100 are integrally formed ( When the 17) rises in the vertical direction, the wooden mold 52 is fixed to the support frame 17, so that the midsole 300 and the sole 2 are formed on the upper 100 and separated from the lower mold 19. Shoe body (1) is to be produced.

A state in which the lower mold 19 in which the sole 2 is molded and the support frame 17 on which the upper 100 is installed are in contact with each other; Referring to the structure of the shoe body (1) manufactured with reference to Figures 9 and 10, which is the longitudinal section (the front part of the upper, that is, the sole of the upper part) in the state in which the midsole 300 is molded, the upper 100 The bottom protrusion 210 of the insole 200 which is embedded in the inside is formed of a plurality of bottom protrusions 212 therein, the bottom cap 230 having an inner surface coinciding with the outer surface of the bottom protrusion 210 is The bottom protrusion 210 is provided with a certain space because it forms a covered state.

Here, the insole 200 having the bottom protrusion 210 formed on the bottom thereof has a height of the bottom protrusion 212 formed in the bottom protrusion 210 since the bottom protrusion 210 has a curved surface in an upward direction. By further increasing the compression length of the bottom protrusion 212, which absorbs the impact of the body load can be increased by that much, it is possible to secure more shock absorbing power (see Examples 9 to 10).

In addition, a vent hole 50 is formed between the bottom protrusions 212 of the bottom protrusion 210 so that the space of the bottom protrusion 210 is vented with the outside, so that the bottom protrusion 210 including the bottom protrusion 212 is formed. As it is compressed, the air in the space of the bottom protrusion 210 is exhausted into the upper 100 through the vent hole 50.

That is, the foot shoe 210 including the bottom protrusion 212 is compressed while restoring and restoring the heel protrusion 220 including the heel protrusion 222 when the completed shoe body 1 is worn on the foot. When the restoring operation occurs repeatedly, as described above, when the bottom protrusion 210 and the heel protrusion 220 are compressed, the air inside the shoe body 1 is also exhausted to the outside, and the bottom protrusion 210 and the heel protrusion ( When 220 is restored, the outside air of the shoe body 1 is sucked.

Since the insole 200 with the bottom protrusion 210 and the heel protrusion 220 is not directly bonded to the midsole 300, the insole 200 can be separated from the upper 100 as necessary, so the insole 200 is frequently washed. Cleanliness can be maintained.

The present invention as described above, the bottom hole 112 and the heel hole 114 is formed in the sole 110 forming the bottom of the upper 100, the bottom hole 112 in the bottom of the insole 200 The bottom protrusion 210 and the same as the outer shape of the heel hole 114, the same as the shape of the heel protrusion 220 is formed, the bottom protrusion 210 and the inside of the heel heel 220 a plurality of bottom projections 212, respectively ) And the heel protrusion 222, and the bottom protrusion 210 and the heel protrusion 220 are installed to the bottom cap 230 and the heel cap 240, respectively, the bottom protrusion 210 and the heel protrusion 220. Is stretchable in a certain space, the bottom cap 230 and the heel cap 240 is buried in the midsole 300 to form a state in which the insole 200 is separated from the upper 100 as needed freely By doing so, it is possible to wash the insole 200 as necessary to maintain the clean state and the bottom protrusion 210 and the heel of the insole 200 having elasticity and elasticity Shock absorption by the body weight by 220, as well as the effect that is to the intake and exhaust operation by a plurality of vent holes (50).

Particularly, the bottom protrusion 210 and the heel protrusion 220 are formed to protrude on the bottom surface of the insole 200 so that the midsole 300 is formed on the bottom cap 230 and the heel cap 240 in the state of forming the bottom cap. Since the 230 and the heel cap 240 are impregnated, the weight of the midsole 300 can be reduced, thereby reducing costs and reducing the overall weight of the shoe body.

Claims (2)

The present invention is a shoe made of an insole and a midsole having cushioning power and a durable sole, the sole of the sole and the heel of the user's sole in the sole 110 forming the bottom of the upper 100 The bottom hole 112 and the heel hole 114 having a predetermined shape are formed in contact with each other, and the bottom of the insole 200 has the same shape as the bottom hole 210 and the heel hole 114 at the bottom of the insole 200. To form the same heel protrusion 220, the bottom protrusion 210 and the inside of the heel protrusion 220, respectively, a plurality of bottom protrusions 212 and the heel protrusions 222, respectively, the bottom protrusion 210 The bottom cap 230 and the heel cap 240 are respectively installed on the heel portion 220 and the bottom protrusion 210 and the heel protrusion 220 so that the bottom protrusion 210 and the heel protrusion 220 can be stretched in a predetermined space. 230) and the heel cap 240 to form a buried state insole 200 is separated from the upper 100 as necessary Footwear characterized by the so yurop. In the general shoe manufacturing method consisting of the sole molding step, the upper molding step, the midsole molding step, the exhaust device or shock absorber installation step, the insole molding step, A hole forming step of forming a bottom hole and a heel hole where the center of the sole and the heel of the user are located on the sole of the upper; An insole molding step of forming a bottom protrusion having a plurality of bottom protrusions and a heel protrusion having a plurality of heel protrusions on the bottom of the insole; And the cap forming step of having an inner surface that matches the outer circumference of the bottom protrusion and the heel stone portion forming the bottom cap and the heel cap; Footwear manufacturing method characterized in that it comprises an assembling step of assembling the bottom cap and the heel cap to the bottom protrusion and the heel protrusion of the outsole respectively.

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