KR0119123B1 - Shoe midsole manufacturing method - Google Patents

Abstract

The present invention aims to overcome the deficiencies of the conventional midsole manufacturing method of heating and pressing EVA foam already foamed, and to form desired openings and conduits on the bottom periphery and the midsole main body at the side circumference of the midsole.

In order to achieve the above object, the present invention provides an intermediate window body member (a), a bottom peripheral member (b), a filling member (c), and an impact damping member in the filling member (c) which are already made of EVA foam. (d), wherein each conduit (1) of the bottom peripheral member (b) and each conduit (4) of the intermediate window member (a) and each opening (3) of the filling member (c) are connected in series. The mid-window body member (a) the filling member (c) and the bottom peripheral member (b) are bonded together at their respective joint surfaces to be integrally joined to form a mid-window material, and each of the bottom peripheral members (b) of the mid-window material The midsole material, in which the insertion member 7 is fitted into the conduit hole and each insertion member 7 is fitted into each conduit hole, is stored in the fitting recess 10 of the lower frame 12, which is a molding feature B. It is a manufacturing method of the intermediate | middle window which seals this with the upper mold 11, and heat-presses each of these members for predetermined time.

According to the above-described configuration, the impact damping member (d) is mounted in the filling member (c), and furthermore, since the filling member (c) is reliably and uniformly mounted in a predetermined portion in the intermediate window body member (a). Not only can it prevent the foot from being damaged by attenuating the impact that is 3 to 4 times the weight of the shoe wearer, but also help the shoe wearer to move forward by the resilience of each piece of the piece constituting the filling member (c). There is a number. In addition, the conduit 1 of the bottom periphery member b can be reliably formed by using the insertion member 7, and various hole shapes (triangle, quadrilateral, rhombus, round, oval, etc.) can be formed reliably. As a result, it is possible to provide a desirable midsole in design.

The filling member is also provided from each opening 3 of the filling member c in contact with each conduit 1 of the bottom peripheral member b and the conduit 4 of the intermediate window body member a in communication with the conduit 1. Since the shock absorbing member (d) in (c) can be seen from the outside, a shoe wearer can wear sneakers provided with this intermediate window (A) with confidence.

Description

Shoe midsole manufacturing method

1 is a schematic plan view from above of an intermediate window produced by a manufacturing method of an embodiment of the present invention;

2 is a schematic plan view of another embodiment of a midsole.

3 is a partially enlarged perspective view of the vicinity of the shoe heel in the mid-panel removed from the filling member.

4 is a perspective view of the filling member of the middle window.

Fig. 5A is a schematic partially enlarged side view showing the outer circumference of the vicinity of the shoe heel of the bottom peripheral member which is one of the main parts of the middle window.

FIG. 5B is a schematic partially enlarged side view of another embodiment of the bottom peripheral member. FIG.

FIG. 5C is a schematic partially enlarged side view of another embodiment of the bottom peripheral member. FIG.

6 (A) is a schematic cross-sectional view of the vicinity of the shoe heel of the midsole.

6B is a schematic cross-sectional view of the vicinity of the shoe heel of the midsole according to another embodiment.

6C is a schematic cross-sectional view of the vicinity of the shoe heel of the midsole in accordance with another embodiment.

7A is a schematic perspective view of an insertion member forming a conduit of a bottom peripheral member of the middle window.

7B is a schematic perspective view of an insertion member forming another conduit.

7C is a schematic perspective view of an insertion member forming another conduit.

7D is a schematic perspective view of the insertion member.

8 is a schematic cross-sectional view of a forming mold forming a midsole.

* Explanation of symbols for main parts of the drawings

1: channel 2: transmission hole or recess

3: opening 4: channel

5: circumferential wall 6: remover

7: Insertion member 8: Convex part of insertion member

9: head part of insertion member 10: fitting recess of lower frame

11: upper frame 12: lower frame

13: middle part of insertion member

A: Mid window B: Mold

a: middle window member b: bottom peripheral member

c: filling member d: impact damping member

The present invention mainly relates to the improvement of the manufacturing method of the midsole (sole) suitable for jogging, running practice, and other running sneakers, and more specifically, the midsole that can be identified and identified from the outside of the impact damping member mounted inside It relates to the provision of a method for producing a simple.

The conventional method for manufacturing a midsole is a predetermined molding of a component such as a bottom peripheral part as an intermediate body made of an ethylene vinyl acetate resin material which has already been foamed and a filling part accommodating an impact damping member, respectively. After storage in the cavity of the frame, heating and at the same time applying pressure in the vertical direction (up and down direction of the middle window) to form each component and apply these components to each joint surface by adhesive bonding The recipe has been generally used.

Recently, however, a horizontal window is formed on the side circumference of the middle window so that the presence of the impact damping member in the filling part is easily seen from the outside, so that the shock absorbing member can be safely worn. It has been requested to provide a running sneaker with.

However, according to the manufacturing method of the shoe midsole of the conventional running sneakers, since it is a molding method for applying pressure to each component of the midsole in the vertical direction (vertical), the window or the conduit (channel) Despite the need to form a vertical pressure applied to the vertical window or conduit is destroyed by pressing the horizontal window or conduit was difficult to form a side window around the intermediate window.

The present invention overcomes the problems in the conventional method of manufacturing a midsole, which heat-presses the already-expanded EVA resin material to form the desired (mainly horizontal) openings and conduits on the side periphery of the midsole, ie the bottom peripheral member of the midsole. The purpose is to produce a midsole.

The present invention has been made to achieve the above object, and is made of a foamed EVA resin, at least in the manufacturing method of the middle window in which the shock absorbing member is accommodated at the center of the shoe rear axle. A bottom peripheral member (b) having one or a plurality of conduits (1) penetrating in the horizontal direction on the outside is provided at least on one side of the shoe heel, and filled at least near the center of the shoe heel. One which communicates with each conduit (channel) 1 of the bottom peripheral member b mentioned above to the upper recessed part 2 which fits the member c, and the circumferential wall 5 of the recessed part 2. Or forming an intermediate window member (a) having a plurality of conduits (4), forming one or more members, covering the impact damping member (d), and forming the intermediate window member (a) on a part of the side circumference ( one or more degrees A filler (c) having one or a plurality of openings (3) in contact with (4) is formed, and these bottom peripheral members (b), intermediate window body members (a), and filler members (c) are joined to their joint surfaces. A suitable adhesive is applied and integrally bonded to the midsole material, and in the conduits 1 of the bottom peripheral member b of the midsole material, the head 9 which is somewhat larger than the hole diameter of each conduit 1; A volume smaller than that of the intermediate window material which fits the insertion member 7 with the convex part 8 of the same size as the hole diameter of each conduit 1, and fits each insertion member 7 to each conduit hole. It is housed in the fitting recess 10 of the lower frame 12, which is the molding frame B having an inner space, and the lower frame 12 containing the intermediate window material is sealed with the upper frame 11 This is characterized by heating and pressing for a predetermined time.

According to the above-described configuration, the method for manufacturing a shoe midsole is a shock absorbing member (b) as a separate member from the bottom periphery member (b), the middle main body member (a), and the middle main body member (a) which are already made of foamed EVA resin latex ( The filling member (c) fitted with the d) is formed by applying an adhesive to each joining surface and integrally bonding to form a mid-window material. Therefore, the filling member (c) member is fixed uniformly and skillfully at a predetermined position. I can do it.

In addition, the convex portion 8 of each insertion member 7 is previously fitted into each conduit-shaped hole of the bottom peripheral member b, and then fixed, and then the intermediate window material in which the bottom peripheral member b is joined is formed into a mold. (b) The convex portions 8 of the respective insertion members 7 are accommodated in the fitting recesses 2 of the lower mold 12, and the upper mold 11 is sealed and then heated and press-molded. For example, one or more conduits (1) of various holes such as round, oval, quadrilateral, triangular, or flower shape can be simply formed. It is possible to remarkably improve and moreover, the impact damping member (d) can be seen from the side circumference of the sole.

EXAMPLE

The manufacturing method of the shoe midsole according to the present invention is shown as a representative example according to the drawings.

In other words, the manufacturing method of the shoe midsole according to the present invention, as shown in FIGS. A recess 2 for fitting the filling member c is formed, and one or a plurality of channels 4 penetrating in the horizontal direction are formed in the peripheral wall 5 of the recess 2. The intermediate window body member (a) is formed.

Similarly, the foamed EVA resin is then cut into a bottom periphery material having a width and a length that covers at least a portion of the outer periphery of the intermediate body member a, and the vicinity of the shoe heel of the bottom periphery material. The bottom peripheral member (b) is formed by drilling one or a plurality of conduits (channel) 1 in communication with each conduit (4) of the intermediate window body member (a).

Similarly, one or a plurality of members formed of EVA foam already foamed are cut out, and these members are assembled to accommodate the above-described impact damping member d, and further, the shock damping member d is outside. The filling member c having one or a plurality of openings 3 is formed to be visible.

Then, an adhesive is applied to each joining surface, and the filling member is formed in the recess 2 of the intermediate window member a so that each opening 3 coincides with each conduit 4 of the above-mentioned intermediate window member a. Fit (c) and fix it. In addition, the adhesive is applied to each joint surface, and the bottom peripheral member (b) is joined to the outer circumference of the intermediate window body member (a) so that each conduit (1) and each conduit (4) coincide. The midsole material is integrally formed.

Subsequently, in each conduit 1 of the bottom peripheral member b, the head portion 9 which is somewhat larger than the hole diameter of each conduit 1 and the hole-shaped convex portion 8 having substantially the same size as each conduit hole diameter. ) And each insert member 7 having an intermediate portion 13 inclined between these heads and the convex portion, and the convex portion 8 of each insert member 7 is fitted from the outside.

In addition, the midsole material is accommodated in the fitting recess 2 having a volume smaller than that of the midsole material in the mold 12 of the molding die B, and the underframe 12 containing the midsole material is accommodated. Sealed with the upper mold 11, heated and pressurized at a pressure of 140 to 160 kg at a temperature of about 145 to 175 ° C. for about 3 to 6 minutes, and then the upper mold 11 was removed and each insert member 7 was removed. It forms the intermediate | middle window A shown by desire [FIG. 1, 3, 4, 5 (A)-(C), and 6 (B)].

Other Examples

The manufacturing method of the shoe midsole of the present invention is shown in FIG. 2 as follows in addition to the method of manufacturing the midsole A shown in FIG. 1, FIG. 3, FIG. 4, FIG. 5, and FIG. 6 (A) and FIG. The intermediate window A shown in FIG. 4, FIG. 5 (A) to FIG. 5 (C), and FIG. 6 (C) can be manufactured.

That is, first, the removal part 6 having been removed from the vicinity of the shoe heel is formed so as to fit the filling member c, which will be described later, with the already-expanded EVA resin, and at least 1 penetrates horizontally around one side of the shoe heel. A midwindow-shaped material in which one or a plurality of conduits 4 are formed is formed.

Similarly, the foamed EVA resin has a width and a length that covers at least a part of the outer circumference of the intermediate body member (a) as described above. A bottom peripheral member (b) is formed in which one or a plurality of conduits (1) are formed in communication with each conduit (4) of the intermediate window body member (a) and penetrate in the horizontal direction.

Similarly, one or more pieces of pieces are cut out with a foamed EVA resin, and the pieces are assembled to accommodate the above-described shock damping member d in a part thereof, and contacted with the above-described shock damping member d. The filling member c is formed by forming one or a plurality of openings 3.

Next, an adhesive is applied to each joining surface in the removing portion 6 of the middle window body member a to fit and fix the filling member c, and the outside of the middle window body member a and the filling member c. An adhesive is applied to each joining surface on the periphery, and each opening 3 of the filling part (c) and each conduit 4 of the midwindow member a are connected to each other in succession, and the midwindow member a An adhesive is applied to each joining surface so that each conduit 4 of the c) and each conduit 1 of the bottom peripheral member b are joined together, and the bottom peripheral member b is joined to form an integral mid-window material. .

In addition, the convex portion 8 having a hole diameter of approximately the same size as the head portion 9 which is somewhat larger than the hole diameter of each conduit 1 in each conduit 1 of the bottom peripheral member b and the aforementioned conduit holes. And the convex portions 8 of the respective insertion members having the intermediate portions 13 which are inclined between these head portions and the convex portions.

Next, the midsole material is accommodated in the fitting recess 2 having a volume smaller than that of the midsole material in the mold 12, which is the molding die B, and the underframe containing the midsole material ( 12) was sealed with the upper mold 11 and heated and pressurized for about 3 to 6 minutes at a pressure of about 140 to 160 kg at a temperature of about 145 to 175 ° C. to remove the upper mold 11 and remove each insert member 7. The desired intermediate window A (shown in FIGS. 2 and 4 and 6 (c)) can be formed.

Moreover, what is necessary is just to use the chloroprene type | system | group or polyurethane type adhesive agent as an adhesive agent which bonds each structural member.

As described above, in the present invention, since the impact damping member (d) is mounted in the filling member (c), and the filling member (c) is reliably and uniformly mounted in a predetermined portion in the intermediate window body member (a), Not only can the foot damage be reduced by 3 to 4 times the wearer's weight, but the resilience of each piece of the piece constituting the filling member (c) can help the shoe wearer to move forward. have. In addition, the conduit 1 of the bottom periphery member b can be reliably formed by using the insertion member 7, and various hole shapes (triangle, quadrilateral, rhombus, round, oval, etc.) can be formed reliably. As a result, it is possible to provide a desirable midsole in design.

And from each opening 3 of the filling member c in contact with each conduit 1 of the bottom peripheral member b and the conduit 4 of the intermediate window body member a in communication with the conduit 1. Since the impact damping member d in the member c can be seen from the outside, a shoe wearer can wear a sneaker equipped with the middle window A with confidence.

Claims (2)

In the method of manufacturing the intermediate window A, which is made of a foamed EVA resin and at least the impact damping member d is accommodated in a central portion near the shoe heel, penetrating in the horizontal direction having an appropriately shaped hole-shaped edge on the outside. Forming a bottom peripheral member (b) having at least one conduit (1) around one side of the shoe heel, and fitting the filling member (c) at least near the center of the shoe heel. Intermediate window with one or a plurality of conduits 4 in communication with the concave 1 of the bottom peripheral member b described above in the upward concave portion 2 and the circumferential wall 5 of the concave portion 2. One or a plurality of conduits (4) forming the main body member (a), consisting of one or more members, covering the impact damping member (d) and covering part of the side circumferential body member (a). Filling member (c) having one or a plurality of openings (3) in contact with The bottom peripheral member (b), the middle main body member (a), and the filling member (c) are integrally formed by applying an appropriate adhesive to the joining surfaces thereof, and integrally joined to form a midsole material. Insertion member having a convex portion 8 of the same size as the hole diameter of each conduit 1 and a head portion 9 larger than the hole diameter of each conduit 1 in each conduit 1 of the peripheral member b. (7) to fit the fitting recess of the lower frame 12, which is a molding frame B, having an internal space somewhat smaller than the mid-window material in which each of the insertion members 7 is fitted into each conduit hole. 2) A shoe midsole manufacturing method characterized in that it is housed in a container, and the lower frame (12) containing the intermediate window material is sealed with the upper frame (11) and heated and pressed for a predetermined time. In the method of manufacturing the intermediate window A, which is made of a foamed EVA resin and at least the impact damping member d is accommodated in a central portion near the shoe heel, penetrating in the horizontal direction having an appropriately shaped hole-shaped edge on the outside. Forming a bottom peripheral member (b) having at least one conduit (1) around one side of the shoe heel, and fitting the filling member (c) at least near the center of the shoe heel. An intermediate window body member (a) having a removing portion (6) is formed, and formed of one or a plurality of members, covering the impact damping member (d), and surrounding the bottom surface as a part of the side circumference. A filling member (c) having one or a plurality of openings (3) contacting each conduit (1) of the member (b) is formed, and these bottom peripheral members (b), intermediate window member (a), and filling members are formed. (c) is applied to each joint surface by applying a suitable adhesive Joints are formed to form the midsole material, and in each conduit 1 of the bottom peripheral member b of the midsole material, the head 9 and the conduit 1 which are somewhat larger than the hole diameter of each conduit 1 are formed. Forming mold having an internal space that is somewhat smaller in volume than the midsole material in which the insertion member 7 having the convex portion 8 having the same size as the hole diameter is fitted, and the respective insertion member 7 is fitted in each conduit hole ( B) is housed in the fitting recess 2 of the lower mold 12, and the lower mold 12 containing the intermediate window material is sealed with the upper mold 11 and heated and pressed for a predetermined time. Shoe midsole manufacturing method characterized by the above-mentioned.