CN113519974B

CN113519974B - Sole and forming method thereof

Info

Publication number: CN113519974B
Application number: CN202110590401.7A
Authority: CN
Inventors: 周恩洪; 周启明; 吴强; 金丹
Original assignee: Zhejiang Kemanqi Biotechnology Co ltd
Current assignee: Zhejiang Kemanqi Biotechnology Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2023-02-03
Anticipated expiration: 2041-05-28
Also published as: CN113519974A

Abstract

The invention relates to a sole, which comprises an outsole, wherein the outsole comprises an outsole outer layer, a polyether layer arranged in an outsole outer layer accommodating cavity and a supporting piece fixed on the waist of the outsole outer layer, and at least the upper surface of the supporting piece is covered with the polyether layer. The support piece adopted by the invention can replace a steel shank and has the advantage of low weight, the polyether layer made of the polyether material has certain shock absorption performance, and the middle sole can be omitted after the polyether layer is arranged, so that the production line automation production is facilitated, the shoe making procedures are reduced, and the production efficiency is improved.

Description

Sole and forming method thereof

Technical Field

The invention relates to a sole and a forming method thereof.

Background

The sole is used as a shoe forming part which is contacted with the ground and is used for supporting feet and providing buffering, the sole of the shoe forming part generally consists of an outsole (also called as an outsole), a midsole and an insole, the outsole is generally made of rubber materials and is directly contacted with the ground, the wear resistance is good, the midsole is generally made of PU materials and is formed by combining an insole, a semi-insole and a steel hook core and is used for buffering and supporting the sole of the foot, the air permeability is poor, and the insole is a part which is contacted with the sole of the foot and is used for separating the sole of the foot from the midsole so as to improve the wearing comfort. For leather shoe products, particularly for middle-high heeled leather shoes, the shank has the important functions of connecting the half sole and the heel, supporting the sole and keeping the sole from deforming. With the recent trend of weight reduction, the hook core made of steel has a high mass, which is disadvantageous for further weight reduction.

On the other hand, through set up the gasbag at the sole, reach one of two purposes: the ventilation or cushioning, in fact, the presence of the bladder in the sole has other advantages, such as a reduction in the overall weight of the sole due to the low mass of the bladder, since it is filled with air. However, in the conventional sole airbag, the airbag needs to be communicated with the outside for ventilation, and the airbag needs to be sealed from the outside for cushioning, so that the airbag is generally used for ventilation or cushioning, which is difficult to be compatible.

Disclosure of Invention

The present invention has an object to provide a shoe sole having a lightweight support member that can be firmly fixed to the shoe sole, and a method of molding the shoe sole.

In traditional shoemaking field, the steel colludes the heart and fixes on insole or half insole usually, because the steel colludes the heart and is the slice, and hardness and density are far away than the outsole, insole and insole, if collude the heart fixed durable inadequately, under the exogenic action, the steel colludes the heart and can prick sole material easily, become the sharp sword of stabbing the foot, consequently the steel colludes the heart and does not adopt forms such as sticky fixed usually, but adopts rivet riveting on insole or half insole, to the sole that adopts the steel to collude the heart, insole or half insole also are indispensable usually. However, the above-described fixing means such as the midsole and the caulking are not essential to the present invention, and the inventors have adopted a different structure and fixing means.

In order to achieve the purpose, the sole comprises an outsole, wherein the outsole comprises an outsole outer layer, a polyether layer arranged in a containing cavity of the outsole outer layer and a supporting piece fixed on the shoe waist of the outsole outer layer through gluing, and at least the upper surface of the supporting piece is covered with the polyether layer. The support member is a nylon support member.

Furthermore, a limiting groove for fixing the polyether layer is arranged on the inner side of the shoe edge of the outer layer of the outsole.

Furthermore, the supporting piece is fixed in a groove in the outer layer of the outsole, the groove is provided with a plurality of limiting parts protruding towards the supporting piece, and the supporting piece is clamped below the limiting parts.

Furthermore, a plurality of reinforcing ribs are arranged on the end face, facing the sole, of the outer layer of the outsole, grooves are formed in the reinforcing ribs, and the grooves between the outer layer of the outsole and the reinforcing ribs are filled and covered by the polyether layer in a forming mode.

Further, the support member has a rough contact surface fixed to the groove by adhesion.

Furthermore, the sole also comprises an air bag arranged at the front sole of the outer layer of the outsole, and the air bag is covered by the polyether layer.

Further, the gasbag includes the cavity, the cavity is supported by a plurality of supporting components, the supporting components include the gasbag upper surface undercut with the pit that the pad body of gasbag formed or with the gasbag upper surface and the hollow cylindrical support wall that the gasbag lower surface is connected of undercut.

Furthermore, a plurality of air holes penetrating through the polyether layer are formed in the part of the air bag corresponding to the half sole of the sole.

The invention also discloses a sole forming method, which comprises the following steps:

(1) Manufacturing a outsole outer layer, a nylon supporting piece and an air bag;

(2) Fixing a nylon support piece on the waist of the outsole outer layer, and placing an air bag in a groove of the outsole outer layer front sole;

(3) And injecting polyether layer injection molding liquid into the accommodating cavity of the outer layer of the outsole for secondary injection molding, so that the polyether layer injection molding liquid covers the accommodating cavity of the outer layer of the outsole, the limiting groove, the upper surface of the air bag and the upper surface of the nylon support piece, and then closing the mold to complete injection molding of the sole.

The invention has the technical effects that:

(1) The sole support piece (or the shank) is used as the sole support piece, the support piece is low in density and high in strength, and not only can play a role in supporting the sole, but also can reduce the weight of the sole.

(2) The invention can be provided with the polyether layer made of the polyether material on the upper surface of the supporting piece instead of the middle sole or the half inner sole, thereby further reducing the weight of the sole and ensuring that the polyether layer is more comfortable to wear.

(3) The invention can adopt a fixing mode different from the traditional steel hook core, including a mode of gluing, placing the support piece in an injection mold to be injection-molded with the sole and the like, which is more flexible and firm, is beneficial to automatic assembly line production, and can reduce the procedures of shoemaking and improve the production efficiency.

(4) The inner side of the shoe edge of the outer layer of the outsole is provided with a limiting groove, one end of the outer layer of the outsole, facing the sole, is provided with a reinforcing rib, a polyether layer is formed in the limiting groove, the reinforcing rib and the groove of the outer layer of the outsole, the limiting groove can limit the softer polyether layer from falling off, the reinforcing rib increases the contact area of the outer layer of the outsole and the polyether layer, so that the softer polyether layer can be formed on the outer layer of the outsole, the reinforcing rib simultaneously provides support for the softer polyether layer, and the limiting part arranged in the groove enables the supporting piece to be clamped in the groove and fixed through gluing, so that the supporting piece is prevented from degumming and shifting in the polyether layer under the action of external force.

(5) The half sole air bag is provided with a plurality of air holes, the half sole air bag is formed by covering or embedding a polyether layer made of polyether materials, the air holes protrude out of the polyether layer, the air holes can exchange gas with a shoe cavity, the air bag supports the air bag cavity by arranging a plurality of supporting components, the supporting components and the gas in the air bag play a role in cushioning together, particularly, the air bag also comprises an outer ring which is arranged outside the air bag body and communicated with the air bag body through a plurality of channels, and the outer ring is provided with an annular buffer cavity, so that the cushioning effect is further improved.

Drawings

FIG. 1 is a schematic top view of a sole according to embodiment 1;

FIG. 2 is a schematic top view of the outsole outer layer (polyether layer not overmolded) of example 2;

FIG. 3 is a partial sectional view of embodiment 2;

FIG. 4 is a schematic cross-sectional view of FIG. 3;

FIG. 5 is an enlarged partial schematic view of the end of the support member and the card slot;

FIG. 6 is a schematic view of the contact surface of the support member and the groove;

FIG. 7 is a schematic view of a support member;

FIG. 8 is a schematic view of a sole with an air bladder at the forefoot;

FIG. 9 is a schematic view of a bladder;

FIG. 10 is a schematic view of a dimple support assembly;

FIG. 11 is a schematic view of a support wall;

FIG. 12 is a schematic view of the vent.

Description of reference numerals: 1. a support member; 101. a contact surface; 102. an end portion; 103. a triangular mouth; 2. a outsole; 201. an outer outsole layer; 202. a limiting groove; 203. reinforcing ribs; 204. a groove; 205. a shoe edge; 3. a groove; 301. a limiting part; 302. a card slot; 303. a protruding angle; 4. a polyether layer; 5. an air bag; 501. a cavity; 502. a support assembly; 5021. a pit; 5022. a cushion body; 5023. a support wall; 503. an airbag body; 504. an outer ring; 5041. a buffer chamber; 6. the half sole; 7. and (4) air holes.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1 and 7, a sole of embodiment 1 includes an outsole 2, where the outsole 2 includes an outsole outer layer 201, a polyether layer 4 disposed in a cavity of the outsole outer layer 201, and a support member 1 fixed on a shoe waist of the outsole outer layer 201, at least an upper surface of the support member 1 is covered with the polyether layer 4, in order to enhance firmness of combination of the outsole outer layer 201 and the polyether layer 4, a limiting groove 202 is disposed inside a shoe edge 205 of the outsole outer layer 201, the polyether layer 4 is fixed and limited in the limiting groove 202 through injection molding, and the limiting groove 202 is formed by inward contraction of the shoe edge 205 on the periphery of the outsole outer layer 201 and a wedge-shaped cavity formed at the bottom end of the outsole outer layer. The invention relates to a support 1, in particular to a nylon support or a support made of other light materials, which is used for replacing a steel shank in the traditional shoe making industry, is a novel flaky shoe shank, has an aspect ratio smaller than that of the traditional shoe shank, a thickness equivalent to that of the traditional steel shank and a mass smaller than that of the steel shank, and is different from the fixing mode of the traditional steel shank. The polyether layer 4 in this embodiment is made of a polyether material, and the polyether layer 4 fills the accommodating cavity of the outsole outer layer 201 and the limiting groove 202 inside the shoe edge 205 during molding, so that the softer polyether layer 4 can be stably over-molded with the outsole outer layer 201.

In the above embodiment, the supporting member 1 may be directly fixed in the groove 3 on the inner side of the outsole 2, in this embodiment, the supporting member 1 has a shape matching with the groove 3, during fixing, glue is applied to the contact surface 101 between the supporting member 1 and the groove 3, the supporting member 1 is pressed into the groove 3, the supporting member is fixed in the shoe waist groove 3 of the outsole 2 after being pressed by the baking and sole pressing machine, and then the polyether layer 4 is formed over the supporting member 1 and on the inner side of the outsole outer layer 201. In this embodiment, referring to fig. 4, the supporting member 1 may have a rough contact surface 101, and the contact surface 101 may be sanded and fluffed by a grinding wheel or sand paper, so that the contact surface 101 forms an uneven rough surface, which increases the contact area between the supporting member 1 and the groove 3 and improves the firmness of adhesion.

Referring to fig. 2, 3 and 4, embodiment 2 of the present invention is different from embodiment 1 in that a plurality of reinforcing ribs 203 are provided on an end surface of the outsole outer layer 201 facing to the sole of a foot, the grooves 3 span a plurality of the reinforcing ribs 203, the polyether layer 4 is molded to fill the grooves 204 between the reinforcing ribs 203, and the support member 1 is integrally embedded into the polyether layer 4, the reinforcing ribs 203 can support the polyether layer 4, increase a contact area between the outsole outer layer 201 and the polyether layer 4, and enhance firmness of injection molding and bonding of the outsole outer layer 201 and the polyether layer 4. In embodiment 2, although the contact surface between the groove 3 formed by the reinforcing rib and the support 1 is small, the increase of the roughness of the contact surface 101 of the support 1 after fluffing has an obvious effect on the bonding firmness of the support 1, the groove 3 formed on the reinforcing rib 203 and the polyether layer 4.

In the above embodiments 1 and 2, the supporting member 1 is integrally fixed between the polyether layer 4 and the outsole outer layer 201 through injection molding, the hardness of the supporting member 1 is higher than that of the polyether layer 4, and the supporting member 1 may be degummed under the action of an external force, so that the supporting member 1 moves in the sole, as shown in fig. 1, 2, 3 and 4, in an improved scheme, the groove 3 has a plurality of limiting portions 301 protruding towards the supporting member 1, and the supporting member 1 is clamped below the limiting portions 301. Fig. 5 shows an end portion 102 of the support member for easier installation and a slot 302 matched with the end portion 102, the support member 1 has a trapezoidal end portion 102, and the slot 302 matched with the end portion 102 is arranged below the limiting portion 301.

Referring to fig. 1, 2 and 7, in the above embodiment, a limiting manner is further included, wherein opposite end portions 102 of the supporting member 1 are respectively provided with inwardly contracted triangular openings 103, and the groove 3 is provided with triangular protruding angles 303 matched with the triangular openings 103.

In the above embodiments 1 and 2, referring to fig. 8 and 9, the airbag device further includes an airbag 5 disposed on the outsole outer layer front palm 6, the polyether layer 4 covers the airbag 5, and the outsole outer layer 201 may be provided with a placement groove for placing the airbag 5 therein. Referring to fig. 9, 10 and 11, the airbag 5 includes a cavity 501, the cavity 501 is supported by a plurality of support members 502, the airbag 5 and the support members 502 are made of elastic materials, the support members 502 can provide elastic support for the airbag cavity 501, and provide elastic support to help the airbag 5 recover after the external force disappears when the airbag 5 is compressed by the external pressure to deform, the support members 502 include two embodiments, the first embodiment is that the upper surface of the airbag 5 is recessed downward to form a recess 5021 with a cushion 5022, the second embodiment is that the support members 502 include a hollow cylindrical support wall 5023 connecting the upper surface and the lower surface of the airbag 5, and the upper surface of the airbag 5 is recessed downward and connected with the support wall 5023.

Referring to fig. 9, in the above embodiment, the airbag 5 includes the airbag body 503 and the outer ring 504 which is communicated with the cavity 501 of the airbag body through a plurality of channels, and an annular buffer cavity 5041 is arranged in the outer ring 504, and the buffer cavity 5041 is used for enabling part of gas to enter the outer ring 504 through the channels when the airbag body 503 is pressed, so that the cushioning effect is improved.

Referring to fig. 11 and 12, in the above embodiment, a plurality of air holes 7 are formed through the polyether layer 4 on the air bag 5, the air bag 5 exchanges air with the shoe cavity through the air holes 7, when a user walks, the user steps on the ground for only a short time, part of air in the air bag 5 is exhausted through the plurality of air holes 7 during stepping, part of air enters the buffer cavity 5041, part of air remains in the air bag 5 to serve as a shock absorption cushion, when the user lifts the foot, the air bag 5 is elastically restored, shoe cavity air enters the air bag 5, and the above process occurs periodically along with the continuation of walking, so that the air is agitated in the shoe cavity and finally permeates out through the shoe upper.

The invention also comprises a forming method of the sole, which comprises the following steps:

(1) Respectively molding the outsole outer layer 201, the airbag 5 and the support member 1 by injection molding;

(2) Fixing a support member 1 on the shoe waist of an outsole outer layer 201, wherein the working procedures comprise grinding and fluffing a contact surface 101 of the support member 1 through a grinding wheel, brushing an adhesive for shoes, such as yellow glue or water-based glue for shoes, on the contact surface 101 of the support member 1, clamping the support member 1 into a groove 3, optionally baking the support member in an oven at the temperature of 80-120 ℃ for 3-5 minutes at the optional pressure of 0.8-1 MPa for a press for 4-8 s, and cleaning the redundant adhesive;

(3) Fixing the air bag 5 in the groove of the front sole 6 of the outsole outer layer 201 in an adhesive manner;

(4) And (3) placing the outsole outer layer 201 processed in the steps into a mold, injecting the polyether layer 4 injection liquid into the outsole outer layer 201 for secondary injection molding, covering the accommodating cavity of the outsole outer layer 201, the limiting groove 202, the upper surface of the airbag 5 and the upper surface of the support part 1 with the polyether layer liquid, closing the mold, and performing injection molding, wherein the secondary injection molding is performed by using the conventional polyether injection molding process.

The sole of the invention is prepared by the steps.

Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.

Claims

1. A sole, includes outsole, its characterized in that: the outsole comprises an outsole outer layer, a polyether layer arranged in an outsole outer layer containing cavity and a supporting piece fixed on the outsole outer layer shoe waist through gluing, wherein a limiting groove for fixing the polyether layer is arranged on the inner side of the outsole outer layer shoe edge, and at least the upper surface of the supporting piece is covered with the polyether layer.

2. A sole as claimed in claim 1, wherein: the support piece is a nylon support piece.

3. A sole as claimed in claim 1, wherein: the supporting piece is fixed in a groove in the outer layer of the outsole, the groove is provided with a plurality of limiting parts protruding towards the supporting piece, and the supporting piece is clamped below the limiting parts.

4. A sole as claimed in claim 3, wherein: the end face, facing the sole, of the outer layer of the outsole is provided with a plurality of reinforcing ribs, the grooves are formed in the reinforcing ribs, and the polyether layer is formed and filled in the grooves formed between the outer layer of the outsole and the reinforcing ribs.

5. A sole as claimed in claim 3 or 4, wherein: the support member has a roughened contact surface secured to the recess by gluing.

6. A sole as claimed in claim 1, wherein: the sole is characterized by further comprising an air bag arranged on the front sole of the outer layer of the outsole, and the polyether layer covers the air bag.

7. A sole as claimed in claim 6, wherein: the gasbag includes the cavity, the cavity is supported by a plurality of supporting component, supporting component includes gasbag upper surface undercut and the pit that fills up the body formation of gasbag or with the hollow circular cylinder support wall that gasbag upper surface and the gasbag lower surface of undercut are connected.

8. A sole as claimed in claim 6, wherein: the part of the air bag corresponding to the half sole of the foot is provided with a plurality of air holes which penetrate through the polyether layer.

9. A method for forming a sole, which is characterized in that: the method comprises the following steps: