Composite vamp formed by integral foaming

Abstract

The utility model discloses a composite vamp formed by integral foaming. The composite vamp comprises an EVA foaming layer and an elastic cloth layer, wherein the EVA foaming layer comprises an EVA toe cap area, an EVA upper area and an EVA collar area which are integrally connected; the elastic cloth layer comprises a cloth toe cap area, a cloth upper area and a cloth neckline area which are integrally connected; the EVA foaming layer is located on the outer surface of the elastic cloth layer, and the EVA foaming layer and the elastic cloth layer are stacked up and down to be integrally formed through foaming, combined and fixed, so that the EVA toe cap area, the EVA upper area and the EVA neckline area are correspondingly attached and fixed to the corresponding cloth toe cap area, the cloth upper area and the cloth neckline area one by one. Compared with the prior art, the shoe upper is integrally formed and manufactured, a surface layer and cloth do not need to be bonded or sewed and fixed like a traditional technology, and the EVA foaming layer is used as the outer surface layer, so that the shoe upper has a good protection effect on the instep.

Description

Technical Field

[0001] The utility model relates to the technical field of shoe uppers, in particular to a composite shoe upper formed by integral foaming molding. Background Art

[0002] As an important part of shoes, the shoe upper is usually made separately and then assembled with the sole. For example: CN206836394 U discloses a shoe upper with integrally formed shoelace holes, including a shoe upper, shoelace holes, shoelaces, and ventilation holes; a net leakage layer is provided inside the shoe upper; a super fiber leather layer is provided at the bottom of the net leakage layer, and the super fiber leather layer is connected to the natural leather layer; the edge of the shoe upper is connected with a sewing cloth; the shoe upper is provided with shoelace holes, and a shoelace hole protective sleeve is sleeved on the shoelace holes; the shoelace holes are connected with shoelaces, and a shoelace end is provided at the end of the shoelace; the shoe upper is provided with ventilation holes, specifically, when knitting with a computer knitting machine, the shoelace holes are knitted together. Another example: CN 216453632 U discloses a one-piece shoe upper with shoelace holes, including a shoe tip, a shoe upper, a shoe heel, a collar, and a tongue. The shoe upper is a sheet / tubular structure integrally knitted by a weft knitting machine. Among them, the shoe tip corresponds to the toe part of the foot; the shoe upper is located on both sides of the shoe upper, the shoe heel corresponds to the ankle part of the human body, and the collar is in an open shape for the foot to enter or exit the shoe when wearing. It includes a front end and a rear end of the collar. Among them, the collar part close to the shoe tip is the front end, and the collar part close to the shoe heel is the rear end. The opening width of the front end of the collar is smaller than the opening width of the rear end of the collar, and several shoelace holes are provided on both sides of the front end of the collar.

[0003] It can be seen that its production is relatively complex. For multi-layer structures, sewing or gluing is required. Moreover, when the shoes are worn and used, the protection effect on the instep is not very ideal.

[0004] Therefore, it is necessary to study a new technical solution to solve the above problems. Content of the Utility Model

[0005] In view of this, in view of the deficiencies of the existing technology, the main purpose of the present utility model is to provide a composite shoe upper formed by integral foaming molding, which realizes the integral molding production of the shoe upper and uses the EVA foaming layer as the outer surface layer to play a good protective role on the instep.

[0006] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0007] A composite shoe upper formed by integral foaming molding includes an EVA foaming layer and an elastic fabric layer; wherein:

[0008] The EVA foam layer includes an integrally connected EVA toe area, EVA vamp area, and EVA collar area; the elastic fabric layer includes an integrally connected fabric toe area, fabric vamp area, and fabric collar area; the EVA foam layer is located on the outer surface of the elastic fabric layer and the two are stacked up and down and integrally foamed and formed and fixed together, so that: the EVA toe area, the EVA vamp area, and the EVA collar area are respectively and correspondingly attached and fixed to the corresponding fabric toe area, fabric vamp area, and fabric collar area.

[0009] As a preferred solution, the EVA vamp area includes a left EVA vamp area and a right EVA vamp area. The front ends of the left EVA vamp area and the right EVA vamp area are respectively and integrally connected to the left and right positions at the rear end of the EVA toe area; the front end of the EVA collar area is integrally connected to the middle position at the rear end of the EVA toe area, and the left and right sides of the EVA collar area are respectively and integrally connected to the right side of the left EVA vamp area and the left side of the right EVA vamp area; and, a long strip-shaped opening extending forward and backward is formed in the middle of the EVA collar area to divide the EVA collar area into a left EVA collar piece and a right EVA collar piece. The front ends of the left EVA collar piece and the right EVA collar piece extend toward the middle and are connected to each other left and right to form an integral body as the front end of the EVA collar. A plurality of shoelace holes with a front-to-back spacing are provided on both the left EVA collar piece and the right EVA collar piece.

[0010] The fabric vamp area includes a left fabric vamp area and a right fabric vamp area. The front ends of the left fabric vamp area and the right fabric vamp area are respectively and integrally connected to the left and right positions at the rear end of the fabric toe area; the front end of the fabric collar area is integrally connected to the middle position at the rear end of the fabric toe area, and the left and right sides of the fabric collar area are respectively and integrally connected to the right side of the left fabric vamp area and the left side of the right fabric vamp area; and, a long strip-shaped opening extending forward and backward is formed in the middle of the fabric collar area to divide the fabric collar area into a left fabric collar piece and a right fabric collar piece. The front ends of the left fabric collar piece and the right fabric collar piece extend toward the middle and are connected to each other left and right to form an integral body as the front end of the fabric collar.

[0011] The left EVA vamp area and the right EVA vamp area are respectively and correspondingly attached and fixed to the corresponding left fabric vamp area and right fabric vamp area, and the left EVA collar piece and the right EVA collar piece are respectively and correspondingly attached and fixed to the corresponding left fabric collar piece and right fabric collar piece.

[0012] As a preferred solution, the left fabric collar piece and the right fabric collar piece are exposed outward at several shoelace holes of the left EVA collar piece and the right EVA collar piece.

[0013] As a preferred solution, several first hollow grooves are provided on both the left EVA upper area and the right EVA upper area, and the left fabric upper area and the right fabric upper area are exposed outward at the first hollow grooves.

[0014] As a preferred solution, several second hollow grooves are provided on the EVA toe area, and the fabric toe area is exposed outward at the second hollow grooves.

[0015] As a preferred solution, both the left EVA upper area and the right EVA upper area have EVA thickening and strengthening pieces. The inner surface of the EVA thickening and strengthening pieces is flush with the inner surfaces of the corresponding left EVA upper area and the right EVA upper area, and the outer surface of the EVA thickening and strengthening pieces protrudes from the outer surfaces of the corresponding left EVA upper area and the right EVA upper area;

[0016] The EVA thickening and strengthening piece of the left EVA upper area is defined as the left EVA thickening and strengthening piece, and the EVA thickening and strengthening piece of the right EVA upper area is defined as the right EVA thickening and strengthening piece; the right side of the front end of the left EVA thickening and strengthening piece is integrally connected to the left side of the corresponding left EVA collar piece, and the rear end of the left EVA thickening and strengthening piece extends backward to the left side of the rear end of the corresponding left EVA upper area; the left side of the front end of the right EVA thickening and strengthening piece is integrally connected to the right side of the corresponding right EVA collar piece, and the rear end of the right EVA thickening and strengthening piece extends backward to the right side of the rear end of the corresponding right EVA upper area.

[0017] As a preferred solution, the first hollow grooves are respectively located at the front and rear sides of the left EVA thickening and strengthening piece and the right EVA thickening and strengthening piece.

[0018] As a preferred solution, the outer surfaces of the left EVA collar piece and the right EVA collar piece integrally protrude to form a U-shaped strengthening rib. The U-shaped strengthening rib extends forward on the left, then bends to the right, then folds backward on the right and extends backward on the right to form a U-shaped structure, and the shoelace holes are provided on the U-shaped strengthening rib.

[0019] As a preferred solution, the outer surface of the EVA toe area integrally protrudes to form a C-shaped strengthening block, which is centrally arranged at the front end of the EVA toe area.

[0020] As a preferred solution, the elastic fabric layer has several ventilation holes.

[0021] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly sets an EVA foam layer and an elastic fabric layer. The EVA foam layer is located on the outer surface of the elastic fabric layer, and the two are stacked up and down and integrally foam-molded and fixed, so that: the EVA toe area, the EVA vamp area, and the EVA collar area are respectively and correspondingly bonded and fixed to the corresponding fabric toe area, fabric vamp area, and fabric collar area. In this way, the one-piece molding of the shoe upper is realized, and there is no need to bond or sew and fix the surface layer and the fabric as in the traditional technology. Moreover, using the EVA foam layer as the outer surface layer plays a good role in protecting the instep.

[0022] In addition, the EVA foam layer is convenient for forming various hollow grooves, thickened and strengthened pieces, convex strips, convex parts, etc., so as to improve the strength and local elasticity of the entire shoe upper as needed. Moreover, as a fitting, the shoe upper has better dimensional matching and a high tolerance rate within a certain dimensional range, which is beneficial to improving the production yield of the shoe upper fitting.

[0023] To more clearly illustrate the structural features and functions of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional view of a one-piece foam-molded composite shoe upper according to an embodiment of the present utility model;

[0025] Figure 2 is an exploded view of a one-piece foam-molded composite shoe upper according to an embodiment of the present utility model;

[0026] Figure 3 is another exploded view of a one-piece foam-molded composite shoe upper according to an embodiment of the present utility model;

[0027] Figure 4 is a top view of a one-piece foam-molded composite shoe upper according to another embodiment of the present utility model;

[0028] Figure 5 is an exploded view of a one-piece foam-molded composite shoe upper according to another embodiment of the present utility model.

[0029] Description of the reference numerals in the drawings: EVA foam layer 10, left EVA vamp area 11, right EVA vamp area 12, left EVA collar piece 13, right EVA collar piece 14, shoelace hole 15, EVA toe area 16, first long strip opening 17, front end of EVA collar 18, left EVA thickened and strengthened piece 191, right EVA thickened and strengthened piece 192, U-shaped strengthening convex strip A, C-shaped strengthening convex block B, first hollow groove C, second hollow groove D.

[0030] Elastic fabric layer 20, fabric toe area 21, left fabric side area 22, right fabric side area 23, second long strip opening 24, left fabric collar piece 25, right fabric collar piece 26. Detailed implementation mode

[0031] Please refer to Figures 1 to 5 as shown, which shows the specific structure of the embodiment of the present utility model.

[0032] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0033] A composite shoe upper formed by integral foaming, including an EVA foaming layer 10 and an elastic fabric layer 20; wherein:

[0034] The EVA foaming layer 10 includes an integrally connected EVA toe area 16, an EVA side area, and an EVA collar area; the elastic fabric layer 20 includes an integrally connected fabric toe area 21, a fabric side area, and a fabric collar area; the EVA foaming layer 10 is located on the outer surface of the elastic fabric layer 20 and the two are stacked up and down and integrally foamed and formed and fixed, so that: the EVA toe area 16, the EVA side area, and the EVA collar area are respectively and correspondingly attached and fixed to the corresponding fabric toe area, fabric side area, and fabric collar area.

[0035] The EVA upper area includes a left EVA upper area 11 and a right EVA upper area 12. The front ends of the left EVA upper area 11 and the right EVA upper area 12 are respectively integrally connected to the left and right positions at the rear end of the EVA toe area 16. The front end of the EVA collar area is integrally connected to the middle position at the rear end of the EVA toe area 16. The left and right sides of the EVA collar area are respectively integrally connected to the right side of the left EVA upper area 11 and the left side of the right EVA upper area 12. And, a first elongated opening 17 extending in the front-rear direction is formed in the middle of the EVA collar area to divide the EVA collar area into a left EVA collar piece 13 and a right EVA collar piece 14. The front ends of the left EVA collar piece 13 and the right EVA collar piece 14 extend toward the middle and are joined together left and right to form an integral body as the front end 18 of the EVA collar. A plurality of shoelace holes 15 with a front-rear spacing are provided on both the left EVA collar piece 13 and the right EVA collar piece 14. Both the left EVA upper area 11 and the right EVA upper area 12 have EVA thickening and strengthening pieces. The inner surface of the EVA thickening and strengthening piece is flush with the inner surface of the corresponding left EVA upper area 11 and the right EVA upper area 12. The outer surface of the EVA thickening and strengthening piece protrudes from the outer surface of the corresponding left EVA upper area 11 and the right EVA upper area 12. The EVA thickening and strengthening piece of the left EVA upper area 11 is defined as a left EVA thickening and strengthening piece 191, and the EVA thickening and strengthening piece of the right EVA upper area 12 is defined as a right EVA thickening and strengthening piece 192. The right side of the front end of the left EVA thickening and strengthening piece is integrally connected to the left side of the corresponding left EVA collar piece 13, and the rear end of the left EVA thickening and strengthening piece extends backward to the left rear end of the corresponding left EVA upper area 11. The left side of the front end of the right EVA thickening and strengthening piece is integrally connected to the right side of the corresponding right EVA collar piece 14, and the rear end of the right EVA thickening and strengthening piece extends backward to the right rear end of the corresponding right EVA upper area 12. A U-shaped strengthening rib A is integrally protruded from the outer surfaces of the left EVA collar piece 13 and the right EVA collar piece 14. The U-shaped strengthening rib A extends forward on the left side, then bends to the right, then folds backward on the right side and extends backward on the right side to form a U-shaped structure. The shoelace holes 15 are provided on the U-shaped strengthening rib A. A C-shaped strengthening block B is integrally protruded from the outer surface of the EVA toe area 16, and it is centrally arranged at the front end of the EVA toe area 16.

[0036] The fabric upper area includes a left fabric upper area 22 and a right fabric upper area 23. The front ends of the left fabric upper area 22 and the right fabric upper area 23 are integrally connected to the left and right positions at the rear end of the fabric toe area 21 respectively. The front end of the fabric collar area is integrally connected to the middle position at the rear end of the fabric toe area 21. The left and right sides of the fabric collar area are integrally connected to the right side of the left fabric upper area 22 and the left side of the right fabric upper area 23 respectively. And, a second long strip-shaped opening 24 extending in the front-rear direction is formed in the middle of the fabric collar area to divide the fabric collar area into a left fabric collar piece 25 and a right fabric collar piece 26. The front ends of the left fabric collar piece 25 and the right fabric collar piece 26 extend towards the middle and are joined together left and right to form an integral body as the front end of the fabric collar. The left EVA upper area 11 and the right EVA upper area 12 are respectively fixedly attached to the corresponding left fabric upper area 22 and right fabric upper area 23 in a one-to-one correspondence. The left EVA collar piece 13 and the right EVA collar piece 14 are respectively fixedly attached to the corresponding left fabric collar piece 25 and right fabric collar piece 26 in a one-to-one correspondence. The left fabric collar piece 25 and the right fabric collar piece 26 are exposed at several shoelace holes 15 of the left EVA collar piece 13 and the right EVA collar piece 14. After foam molding, punching operations are performed corresponding to the several shoelace holes 15 to form holes penetrating inward for shoelaces to pass through. A plurality of first hollow grooves C are provided on both the left EVA upper area 11 and the right EVA upper area 12. The left fabric upper area 22 and the right fabric upper area 23 are exposed at the first hollow grooves C. A plurality of second hollow grooves D are provided on the EVA toe area 16. The fabric toe area is exposed at the second hollow grooves D. The first hollow grooves C are respectively located at the front and rear sides of the left EVA thickening and strengthening piece and the right EVA thickening and strengthening piece.

[0037] During production, the cold blank of the EVA foam layer 10 and the elastic fabric layer 20 are stacked up and down and placed in a foam molding die. After foam molding treatment, when the cold blank of the EVA foam layer 10 foams and expands, it is combined and fixed with the elastic fabric layer 20. The elastic fabric layer 20 will undergo elastic deformation during foam molding. After cooling and shaping, a composite shoe upper is obtained.

[0038] As Figure 4 and Figure 5 shown, the elastic fabric layer 20 has a plurality of ventilation holes. In this way, a plurality of ventilation holes can be seen on the outer surface of the EVA foam layer 10.

[0039] When selecting elastic fabric, usually its elasticity is bidirectional (longitudinal and transverse) or has 360-degree omnidirectional elasticity. Since it needs to be placed in a foaming mold for foaming molding treatment, the elastic fabric needs to be heat-resistant within 180 degrees Celsius. Of course, there are various types of fabrics on the market that can meet the requirements of elasticity and heat resistance at 180 degrees Celsius, and they can be flexibly selected according to needs.

[0040] The design focus of the present utility model is that mainly through the setting of the EVA foam layer 10 and the elastic fabric layer 20, the EVA foam layer 10 is located on the outer surface of the elastic fabric layer 20 and the two are stacked up and down and integrally foamed and molded and fixed, so that: the EVA toe area 16, the EVA vamp area and the EVA collar area are respectively and correspondingly attached and fixed to the corresponding fabric toe area, the fabric vamp area and the fabric collar area. In this way, the integral molding of the shoe upper is realized, and there is no need to bond or sew and fix the surface layer and the fabric as in the traditional technology. Moreover, using the EVA foam layer 10 as the outer surface layer plays a good role in protecting the instep.

[0041] In addition, the EVA foam layer 10 is convenient for forming various hollow grooves, thickening and strengthening pieces, convex strips, convex parts, etc., so as to improve the strength and local elasticity of the entire shoe upper as needed. And as a shoe upper accessory, its size matching is better, and the error tolerance within a certain size range is high, which is beneficial to improving the production yield of the shoe upper accessory.

[0042] The above is only a preferred embodiment of the present utility model, and does not impose any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A composite shoe upper formed by integral foaming, characterized in that: It includes an EVA foam layer and an elastic fabric layer; wherein: The EVA foam layer includes an integrally connected EVA toe area, an EVA vamp area, and an EVA collar area; the elastic fabric layer includes an integrally connected fabric toe area, a fabric vamp area, and a fabric collar area; the EVA foam layer is located on the outer surface of the elastic fabric layer and the two are stacked up and down and integrally foamed and formed and fixed together, so that: the EVA toe area, the EVA vamp area, and the EVA collar area are respectively and correspondingly bonded and fixed to the corresponding fabric toe area, fabric vamp area, and fabric collar area.

2. The composite shoe upper formed by integral foaming according to claim 1, characterized in that: The EVA vamp area includes a left EVA vamp area and a right EVA vamp area. The front ends of the left EVA vamp area and the right EVA vamp area are respectively and integrally connected to the left and right positions at the rear end of the EVA toe area; the front end of the EVA collar area is integrally connected to the middle position at the rear end of the EVA toe area, and the left and right sides of the EVA collar area are respectively and integrally connected to the right side of the left EVA vamp area and the left side of the right EVA vamp area; and, a long strip-shaped opening extending in the front-rear direction is formed in the middle of the EVA collar area to divide the EVA collar area into a left EVA collar piece and a right EVA collar piece. The front ends of the left EVA collar piece and the right EVA collar piece extend towards the middle and are joined together left and right to form an integral body as the front end of the EVA collar. A number of shoelace holes are provided at intervals in the front-rear direction on both the left EVA collar piece and the right EVA collar piece; The fabric vamp area includes a left fabric vamp area and a right fabric vamp area. The front ends of the left fabric vamp area and the right fabric vamp area are respectively and integrally connected to the left and right positions at the rear end of the fabric toe area; the front end of the fabric collar area is integrally connected to the middle position at the rear end of the fabric toe area, and the left and right sides of the fabric collar area are respectively and integrally connected to the right side of the left fabric vamp area and the left side of the right fabric vamp area; and, a long strip-shaped opening extending in the front-rear direction is formed in the middle of the fabric collar area to divide the fabric collar area into a left fabric collar piece and a right fabric collar piece. The front ends of the left fabric collar piece and the right fabric collar piece extend towards the middle and are joined together left and right to form an integral body as the front end of the fabric collar; The left EVA vamp area and the right EVA vamp area are respectively and correspondingly bonded and fixed to the corresponding left fabric vamp area and right fabric vamp area, and the left EVA collar piece and the right EVA collar piece are respectively and correspondingly bonded and fixed to the corresponding left fabric collar piece and right fabric collar piece.

3. The composite shoe upper formed by integral foaming according to claim 2, wherein: The left fabric collar piece and the right fabric collar piece are exposed at the positions of a number of shoelace holes of the left EVA collar piece and the right EVA collar piece.

4. The composite shoe upper formed by integral foaming according to claim 2, characterized in that: A number of first hollow grooves are provided on both the left EVA vamp area and the right EVA vamp area, and the left fabric vamp area and the right fabric vamp area are exposed at the positions of the first hollow grooves.

5. The composite shoe upper formed by integral foaming according to claim 1 or 4, characterized in that: A number of second hollow grooves are provided on the EVA toe area, and the fabric toe area is exposed outward at the positions of the second hollow grooves.

6. The composite shoe upper formed by integral foaming according to claim 4, characterized in that: EVA thickening and strengthening pieces are provided on both the left EVA side area and the right EVA side area. The inner surface of the EVA thickening and strengthening piece is flush with the inner surfaces of the corresponding left EVA side area and the right EVA side area, and the outer surface of the EVA thickening and strengthening piece protrudes from the outer surfaces of the corresponding left EVA side area and the right EVA side area; The EVA thickening and strengthening piece of the left EVA side area is defined as the left EVA thickening and strengthening piece, and the EVA thickening and strengthening piece of the right EVA side area is defined as the right EVA thickening and strengthening piece; the right side of the front end of the left EVA thickening and strengthening piece is integrally connected to the left side of the corresponding left EVA collar piece, and the rear end of the left EVA thickening and strengthening piece extends backward to the left side of the rear end of the corresponding left EVA side area; the left side of the front end of the right EVA thickening and strengthening piece is integrally connected to the right side of the corresponding right EVA collar piece, and the rear end of the right EVA thickening and strengthening piece extends backward to the right side of the rear end of the corresponding right EVA side area.

7. The composite shoe upper formed by integral foaming according to claim 6, characterized in that: The first hollow grooves are respectively located at the front and rear sides of the left EVA thickening and strengthening piece and the right EVA thickening and strengthening piece.

8. The composite shoe upper formed by integral foaming according to claim 2, wherein: The outer surfaces of the left EVA collar piece and the right EVA collar piece integrally protrude to form a U-shaped strengthening rib. The U-shaped strengthening rib extends forward on the left side, then bends to the right, then folds backward, and extends backward on the right side to form a U-shaped structure. The shoelace holes are provided on the U-shaped strengthening rib.

9. The composite shoe upper formed by integral foaming according to claim 1 or 8, characterized in that: The outer surface of the EVA toe area integrally protrudes to form a C-shaped strengthening bump, which is centrally arranged at the front end of the EVA toe area.

10. The composite shoe upper formed by integral foaming according to claim 1, wherein: The elastic fabric layer has a number of ventilation holes.

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