Multi-color EVA (Ethylene Vinyl Acetate) foam molding sole mold

Abstract

The utility model relates to a multicolor EVA (Ethylene Vinyl Acetate) foam molding sole mold which comprises a middle plate, an upper mold plate vertically opened and closed on the upper side of the middle plate and a lower mold plate vertically opened and closed on the lower side of the middle plate. Two raw materials with different colors are injected through the first glue inlet and the second glue inlet at the same time, one raw material enters the first cavity and the first mold core through the first runner to form a single-color shoe sole and enters the first forming area through the second runner at the same time, and the other raw material enters the second forming area through the third runner to form a single-color shoe sole. Therefore, the first forming area, the second forming area and the third forming area in the second mold cavity and the second mold core can simultaneously form soles with three colors, so that single-color soles and multi-color soles can be simultaneously formed, the production efficiency is greatly improved, and meanwhile, the utilization rate and the use value of existing molds and equipment of shoemaking enterprises are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sole moulds, in particular to a multi-color EVA foaming moulded sole mould. Background Art

[0002] EVA multi-color soles refer to soles made of EVA materials. EVA soles have high resilience and tensile strength, high toughness, good shockproof and cushioning properties, excellent thermal insulation and low-temperature properties, can withstand severe cold, closed cells, good sound insulation, closed cell structure, non-absorbent, moisture-proof, good water-resistant properties, resistant to corrosion by seawater, grease, acid, alkali and other chemicals, antibacterial, non-toxic, odorless and pollution-free.

[0003] For example, Chinese patent CN105904640A discloses a molding process for foaming multi-color materials, which uses a double-cavity mold with a partition in the middle to inject raw materials into the upper and lower cavities at the same time. After the rough mold is formed, the partition is pulled out and foamed together to obtain a double-layer sole, so the manufacturing process is relatively complicated. Utility Model Content

[0004] The present invention aims to solve one of the problems existing in the prior art to at least a certain extent. To this end, the present invention provides a multi-color EVA foaming mold for a sole.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A multi-color EVA foam-molded sole mold comprises an intermediate plate, an upper mold plate which opens and closes on the upper side of the intermediate plate, and a lower mold plate which opens and closes on the lower side of the intermediate plate, a first cavity is arranged on the upper end surface of the intermediate plate, a first core is arranged on the lower end surface of the upper mold plate, a second cavity is arranged on the upper end surface of the lower mold plate, a second core is arranged on the lower end surface of the intermediate plate, the second cavity comprises a first molding area, a second molding area and a third molding area, a first glue inlet and a second glue inlet are respectively arranged on one side of the intermediate plate, a first gate is arranged on the first cavity, the first glue inlet is connected to the first gate through a first runner, a second gate is arranged on the second core and at a position corresponding to the first molding area, the second gate is connected to the first runner through a second runner, a third gate is arranged on the second core and at a position corresponding to the second molding area, the second glue inlet is connected to the third gate through a third runner.

[0007] In some embodiments, the intermediate plate includes an upper plate, a middle plate and a lower plate arranged in sequence from top to bottom, the first cavity is arranged on the upper plate, and the second core is arranged on the lower plate.

[0008] In some embodiments, the first glue inlet and the first runner are arranged on the upper plate, the second runner includes a vertical runner and a branch runner that are connected, the vertical runner is arranged on the middle plate, and the other end is connected to the first runner, the branch runner is arranged on the lower plate, and the other end is connected to the second gate, and the second glue inlet and the third runner are arranged on the lower plate.

[0009] In some embodiments, a first flange is provided on one side edge of the upper plate, and a first groove is provided on the upper template. When the upper template is molded with the upper plate, the first flange is fitted in the first groove.

[0010] In some embodiments, the first glue inlet is disposed on the first flange.

[0011] In some embodiments, a second flange is provided on one side edge of the lower plate, and a second groove is provided on the lower template. When the lower template is molded with the lower plate, the second flange is cooperated in the second groove.

[0012] In some embodiments, the second glue inlet is disposed on the second flange.

[0013] In some embodiments, a water channel is provided in the middle plate.

[0014] Compared with the prior art, the beneficial effect of the utility model is as follows: before the injection molding of the sole, a foamed blank of one color is first placed in the third molding area, and then the mold is closed, and two raw materials of different colors are injected simultaneously through the first glue inlet and the second glue inlet, one raw material enters the first cavity and the first core through the first flow channel to form a single-color sole, and enters the first molding area through the second flow channel, while the other raw material enters the second molding area through the third flow channel, so that the first molding area, the second molding area and the third molding area in the second cavity and the second core simultaneously form three colors of soles, thereby realizing the simultaneous molding of single-color soles and multi-color soles, greatly improving the production efficiency, and at the same time improving the utilization rate and use value of existing molds and equipment of shoemaking enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the mold of the utility model after mold closing;

[0016] Figure 2 It is a three-dimensional schematic diagram of the mold of the utility model after mold opening;

[0017] Figure 3 It is a cross-sectional schematic diagram of the utility model;

[0018] Figure 4 This is a structural schematic diagram of the upper plate of the utility model;

[0019] Figure 5This is a schematic diagram of the structure of the lower plate of the utility model;

[0020] Figure 6 It is a structural schematic diagram of the middle plate of the utility model. DETAILED DESCRIPTION

[0021] The utility model provides the following description with reference to the accompanying drawings to help fully understand the various embodiments of the utility model as defined by the claims and their equivalents. The description includes various specific details to help understanding, but these details should be regarded as exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the utility model.

[0022] In the description of the present invention, descriptions of orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply 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 understood as a limitation on the present invention.

[0023] It will be understood that when one element (eg, a first element) is “connected” to another element (eg, a second element), the element may be directly connected to the other element or an intervening element (eg, a third element) may be present between the element and the other element.

[0024] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments: Figure 1-Figure 6 The multi-color EVA foaming mold for the sole shown in the figure comprises an intermediate plate 1, an upper mold plate 2 opened and closed on the upper side of the intermediate plate 1, and a lower mold plate 3 opened and closed on the lower side of the intermediate plate 1, a first mold cavity 4 is arranged on the upper end surface of the intermediate plate 1, a first mold core 5 is arranged on the lower end surface of the upper mold plate 2, a second mold cavity 6 is arranged on the upper end surface of the lower mold plate 3, and a second mold core 66 is arranged on the lower end surface of the intermediate plate 1, the second mold cavity 6 comprises a first molding area 7, a second molding area 8 and a third molding area 9, and a first mold cavity 6 is arranged on one side of the intermediate plate 1. A first glue inlet 10 and a second glue inlet 11 are respectively provided, a first gate 12 is provided on the first cavity 4, the first glue inlet 10 is connected with the first gate 12 through a first runner 15, a second gate 13 is provided on the second core 66 and at a position corresponding to the first molding area 7, the second gate 13 is connected with the first runner 15 through a second runner 16, a third gate 14 is provided on the second core 66 and at a position corresponding to the second molding area 8, the second glue inlet 11 is connected with the third gate 14 through a third runner 17.

[0025] In the utility model, before the injection molding of the sole, a foaming blank of one color is first placed in the third molding area 9, and then the mold is closed, and two raw materials of different colors are injected simultaneously through the first glue inlet 10 and the second glue inlet 11. One raw material enters the first cavity 4 and the first core 5 through the first flow channel 15 to form a single-color sole, and enters the first molding area 7 through the second flow channel 16, while the other raw material enters the second molding area 8 through the third flow channel 17, so that the first molding area 7, the second molding area 8 and the third molding area 9 in the second cavity 6 and the second core 66 simultaneously form three colors of soles, thereby realizing the simultaneous molding of single-color soles and multi-color soles, greatly improving the production efficiency, and at the same time improving the utilization rate and use value of existing molds and equipment of shoemaking enterprises.

[0026] Furthermore, the intermediate plate 1 includes an upper plate 21, a middle plate 22 and a lower plate 23 which are arranged in sequence from top to bottom, wherein the upper plate 21 and the lower plate 23 are fixed to the middle plate 22 by multiple bolts, the first cavity 4 is arranged on the upper plate 21, and the second core 66 is arranged on the lower plate 23.

[0027] The first glue inlet 10 and the first runner 15 are arranged on the upper plate 21, and the second runner 16 includes a vertical runner 31 and a branch runner 32 that are connected. The vertical runner 31 is arranged on the middle plate 22, and the other end is connected to the first runner 15. The branch runner 32 is arranged on the lower plate 23, and the other end is connected to the second gate 13. The second glue inlet 11 and the third runner 17 are arranged on the lower plate 23.

[0028] The raw material of the first color enters the first molding area 7 from the first glue inlet 10, the first runner 15, the vertical runner 31, the branch runner 32, and the second gate 13 in sequence; the raw material of the second color enters the second molding area 8 from the second glue inlet 11, the third runner 17, and the third gate 14; and the raw material of the third color is simultaneously foamed in the third molding area 9 by heating the mold, and then the raw materials of the three colors are simultaneously foamed and formed in the first molding area 7, the second molding area 8, and the third molding area 9 to form soles of three colors.

[0029] In the utility model, a first flange 41 is provided on one side edge of the upper plate 21, and a first groove 42 is provided on the upper template 2. When the upper template 2 and the upper plate 21 are molded together, the first flange 41 is cooperated in the first groove 42, so that the upper template 2 and the upper plate 21 can be limited so that they can be molded accurately.

[0030] Furthermore, the first glue inlet 10 is disposed on the first flange 41 .

[0031] In the utility model, a second flange 61 is provided on one side edge of the lower plate 23, and a second groove 62 is provided on the lower template 3. When the lower template 3 and the lower plate 23 are molded together, the second flange 61 is cooperated in the second groove 62, so that the lower template 3 and the lower plate 23 can be limited and can be accurately molded together.

[0032] Furthermore, the second glue inlet 11 is disposed on the second flange 61 .

[0033] Of course, the first glue inlet 10 and the second glue inlet 11 are on the same side.

[0034] See also Figure 6 As shown, a water channel 81 is provided in the middle plate 22, and the water channel 81 is used to connect cooling water to cool the mold, so as to facilitate cooling and demolding of the product.

[0035] Combined with the drawings and the above display and description of the basic principles and main features of the utility model and the advantages of the utility model, the technical personnel in the industry should understand that the utility model is not limited to the above embodiments, and the above embodiments and descriptions are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A multi-color EVA foaming sole mold, characterized in that: The invention comprises an intermediate plate (1), an upper mold plate (2) which opens and closes on the upper side of the intermediate plate (1), and a lower mold plate (3) which opens and closes on the lower side of the intermediate plate (1); a first mold cavity (4) is arranged on the upper end surface of the intermediate plate (1); a first mold core (5) is arranged on the lower end surface of the upper mold plate (2); a second mold cavity (6) is arranged on the upper end surface of the lower mold plate (3); a second mold core (66) is arranged on the lower end surface of the intermediate plate (1); the second mold cavity (6) comprises a first molding area (7), a second molding area (8) and a third molding area (9); a first glue inlet (12) is arranged on one side of the intermediate plate (1); 0) and a second glue inlet (11), a first gate (12) is arranged on the first cavity (4), the first glue inlet (10) is connected to the first gate (12) through a first runner (15), a second gate (13) is arranged on the second core (66) at a position corresponding to the first molding area (7), the second gate (13) is connected to the first runner (15) through a second runner (16), a third gate (14) is arranged on the second core (66) at a position corresponding to the second molding area (8), the second glue inlet (11) is connected to the third gate (14) through a third runner (17).

2. The multi-color EVA foaming mold for soles according to claim 1, characterized in that: The intermediate plate (1) comprises an upper plate (21), a middle plate (22) and a lower plate (23) which are arranged in sequence from top to bottom; the first cavity (4) is arranged on the upper plate (21) and the second core (66) is arranged on the lower plate (23).

3. The multi-color EVA foaming mold for soles according to claim 2, characterized in that: The first glue inlet (10) and the first flow channel (15) are arranged on the upper plate (21); the second flow channel (16) includes a vertical flow channel (31) and a branch flow channel (32) that are connected; the vertical flow channel (31) is arranged on the middle plate (22), and the other end of the vertical flow channel is connected to the first flow channel (15); the branch flow channel (32) is arranged on the lower plate (23), and the other end of the branch flow channel (32) is connected to the second gate (13); the second glue inlet (11) and the third flow channel (17) are arranged on the lower plate (23).

4. The multi-color EVA foaming sole mold according to claim 3, characterized in that: A first flange (41) is arranged on one side edge of the upper plate (21), and a first groove (42) is arranged on the upper template (2); when the upper template (2) and the upper plate (21) are molded together, the first flange (41) is arranged in the first groove (42).

5. The multi-color EVA foaming mold for shoe soles according to claim 4, characterized in that: The first glue inlet (10) is arranged on the first flange (41).

6. The multi-color EVA foaming sole mold according to claim 3, characterized in that: A second flange (61) is provided on one side edge of the lower plate (23), and a second groove (62) is provided on the lower template (3). When the lower template (3) and the lower plate (23) are molded together, the second flange (61) is matched and arranged in the second groove (62).

7. The multi-color EVA foaming mold for soles according to claim 6, characterized in that: The second glue inlet (11) is arranged on the second flange (61).

8. The multi-color EVA foaming mold for soles according to claim 2, characterized in that: A water transport channel (81) is provided in the middle plate (22).

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