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

Abstract

The utility model relates to the technical field of forming molds, and discloses a multicolor EVA (Ethylene Vinyl Acetate) foam forming sole mold, which is characterized in that a filling device, a containing hopper, a blocking plate and other structures are arranged, so that material filling is facilitated, the containing hopper is uniformly filled with materials, the filling device is pushed into a mold frame body, and a through groove is positioned above a mold groove; at the moment, the handle is pulled to enable the blocking plate to move, when the position of the leaking hole is overlapped with the position of the through groove, the materials in the containing hopper can fall into the die groove, the good locking effect is achieved, after the handle is pushed inwards, the situation that the containing hopper conveys the materials into the die groove can be avoided, and the effect of rapidly filling the materials is achieved.

Description

Technical Field

[0001] This utility model relates to the field of molding die technology, and in particular to a shoe sole mold for multi-color EVA foam molding. Background Technology

[0002] EVA refers to ethylene-vinyl acetate copolymer and the rubber and plastic foam materials made from it. It is currently widely used in various fields such as foamed shoe materials and wires and cables. Shoe soles made of EVA material not only have cushioning properties but also excellent heat insulation and cold protection properties, as well as good water resistance and moisture resistance. When using EVA to manufacture shoe soles, it has a soft and shock-absorbing effect. During the manufacturing process, the foam material is heated to expand and form a shape in the mold. Then, the mold is cooled down, and the shoe sole can be removed.

[0003] In existing technologies, shoe sole molds have many grooves. If manual filling is required by inserting the mold into the grooves, the gaps are too small, making manual filling inconvenient and time-consuming, which slows down production. Furthermore, when two or more colors of shoe soles need to be foamed during production, different colors need to be filled and extruded again, which takes too long. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a multi-color EVA foam molding mold for shoe soles, which has the advantages of easy material filling and easy fusion, thus solving the problems mentioned in the background technology.

[0005] This utility model provides the following technical solution: a multi-color EVA foam molding shoe sole mold, including a base, a mold frame fixedly installed on one side of the top of the base, a hydraulic press device fixedly installed between the inner bottom wall of the mold frame and the interior of the base, a top block fixedly installed on the top surface of the output shaft of the hydraulic press device, a bottom template being engaged in the groove at the top of the top block, a control device fixedly installed on one side of the top of the base located on the mold frame, a button group provided on one side of the control device, a middle template slidably installed inside the mold frame, mold grooves being linearly arrayed on the top surfaces of the middle template and the bottom template, an upper template fixedly installed on the inner top wall of the mold frame, protrusions adapted to the shape of the mold grooves being provided on the bottom surfaces of the upper template and the middle template, and a filling device slidably installed inside the mold frame.

[0006] With the above structural setup, EVA particles are evenly placed into the filling device, which is then pushed into the mold frame. This allows the EVA particles to enter the mold grooves of the bottom and middle molds. The output shaft of the hydraulic press drives the hydraulic press to rise smoothly, simultaneously raising the middle mold. When the top surface of the middle mold contacts the bottom surface of the upper mold, the hydraulic press lifts the bottom, middle, and upper molds without gaps. After heating, the insole foaming is completed, achieving an easy manufacturing effect.

[0007] Preferably, side tubes are symmetrically fixedly installed on both sides of the top block and both sides of the base, and sliding shafts are fixedly sleeved inside the side tubes on both sides of the top block, and the sliding shafts are slidably installed inside the side tubes on both sides of the base.

[0008] With the above structural design, the sliding shaft and side cylinder assist the hydraulic press device in smoothly raising the position of the top block, avoiding deviation when the top block rises, and also ensuring precise positioning between the mold groove and the protrusion.

[0009] Preferably, the inner two walls of the mold frame are uniformly fixed with slide bars in an array, the top of the slide bars is provided with an arc groove, the filling device is slidably installed on the outer ring of the slide bars, and the two sides of the middle template are rotatably installed on the top of the slide bars, and the shape of the rollers is adapted to the arc groove.

[0010] The above structural design allows the middle template to slide out of the mold frame, enabling the bottom template to directly contact the upper template for pressing, while also facilitating the filling device to fill the bottom template or middle template with materials.

[0011] Preferably, a horizontal plate is fixedly installed on one side of the filling device, and a hopper is fixedly installed in a linear array on the top of the horizontal plate. Through grooves are evenly opened in a linear array on the surface of the horizontal plate. The hopper communicates with the bottom surface of the horizontal plate. Pulleys are rotatably installed on both sides of the filling device above the slide bar. Limiting pulleys are evenly rotatably installed in a linear array on both sides of the filling device below the slide bar. The shape of the limiting pulleys is adapted to the bottom surface of the slide bar.

[0012] With the above structural design, the filling device is pushed into the mold frame, so that the through groove is located above the mold groove, allowing the material inside the hopper to fall completely into the mold groove, achieving a good filling effect.

[0013] Preferably, a groove is formed between the packing device and the interior of the horizontal plate, and a blocking plate is slidably installed inside the groove. The surface of the blocking plate has a linear array of uniformly formed leakage holes, the leakage holes corresponding to the positions of the through groove, and a handle is provided on one side of the blocking plate located on the side of the packing device.

[0014] With the above structural design, when the position of the hopper overlaps with the position of the through groove, the material inside the hopper can fall into the mold groove, achieving a good locking effect. After pushing the handle inward, the material can be discharged from the hopper to the mold groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This multi-color EVA foam mold for shoe soles facilitates material filling by incorporating a filling device, a hopper, and a blocking plate. The material is evenly filled into the hopper. The filling device is pushed into the mold frame so that the through slot is positioned above the mold groove. Pulling the handle moves the blocking plate. When the drain hole and the through slot overlap, the material in the hopper falls into the mold groove, achieving a good locking effect. Pushing the handle inward disconnects the hopper from the mold groove, allowing for rapid material filling.

[0017] 2. This multi-color EVA foam mold for shoe soles achieves easy fusion of multiple colors through the setting of sliding strips, middle templates, and upper templates. The hydraulic press lifts the top of the middle template and the bottom of the upper template, as well as the top of the bottom template and the bottom of the middle template, to create a seamless gap. At this point, the foaming and molding effect of the material inside the mold groove at the top of the bottom template and the top of the middle template is completed. The hydraulic press drives the top block to fall, and when the middle template is placed on the top of the sliding strip, it slides out of the mold frame. The top block is lifted again, so that the material inside the mold groove at the top of the bottom template is bonded to the material attached to the bottom protrusion of the upper template, which facilitates the molding of multi-color materials. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective;

[0020] Figure 3 This is a schematic diagram of the internal structure of the mold frame of this utility model;

[0021] Figure 4 This is a schematic diagram of the packing device structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the packing device of this utility model.

[0023] In the diagram: 1. Base; 2. Mold frame; 21. Hydraulic press device; 22. Top block; 23. Bottom template; 24. Side cylinder; 25. Sliding shaft; 26. Sliding bar; 3. Control device; 31. Button group; 4. Middle template; 41. Mold groove; 5. Upper template; 6. Filling device; 61. Horizontal plate; 62. Hopper; 63. Pulley; 64. Limiting pulley; 65. Groove; 66. Blocking plate; 67. Leakage hole; 68. Handle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-3 A multi-color EVA foam mold for shoe soles includes a base 1, a mold frame 2 fixedly installed on one side of the top of the base 1, a hydraulic press device 21 fixedly installed between the inner bottom wall of the mold frame 2 and the interior of the base 1, a top block 22 fixedly installed on the top surface of the output shaft of the hydraulic press device 21, a bottom template 23 snapped into the top groove of the top block 22, a control device 3 fixedly installed on one side of the top of the base 1 located on the mold frame 2, a button group 31 provided on one side of the control device 3, a middle template 4 slidably installed inside the mold frame 2, mold grooves 41 are linearly arrayed on the top surfaces of the middle template 4 and the bottom template 23, an upper template 5 fixedly installed on the inner top wall of the mold frame 2, protrusions adapted to the shape of the mold grooves 41 are provided on the bottom surfaces of the upper template 5 and the middle template 4, and a filling device 6 slidably installed inside the mold frame 2.

[0026] When using this device to make shoe soles, EVA particles are evenly placed into the filling device 6 and pushed into the mold frame 2, so that the EVA particles enter the mold groove 41 of the bottom template 23 and the middle template 4. The filling device 6 is then pulled out of the mold frame 2, and the hydraulic press device 21 is started. The output shaft of the hydraulic press device 21 drives the hydraulic press device 21 to rise smoothly. When the hydraulic press device 21 is pressed against the bottom of the middle template 4, the mold groove 41 of the bottom template 23 contacts the protrusion at the bottom of the middle template 4, and at the same time, the middle template 4 is lifted. When the top surface of the middle template 4 contacts the bottom surface of the upper template 5, the hydraulic press device 21 lifts the bottom template 23, the middle template 4 and the upper template 5 without gaps. After heating, the insole foaming is completed, achieving an effect that is easy to manufacture.

[0027] Please see Figures 1-3Side cylinders 24 are symmetrically fixedly installed on both sides of the top block 22 and the two sides of the base 1. Sliding shafts 25 are fixedly sleeved inside the side cylinders 24 on both sides of the top block 22. The sliding shafts 25 are slidably installed inside the side cylinders 24 on both sides of the base 1. The function of the sliding shafts 25 and the side cylinders 24 is to assist the hydraulic press device 21 in smoothly raising the position of the top block 22, avoiding deviation when the top block 22 rises, and also to ensure accurate positioning between the mold groove 41 and the protrusion.

[0028] Please see Figures 1-3 The inner two walls of the mold frame 2 are uniformly fixed with slide bars 26 in an array. The top of the slide bar 26 is provided with an arc groove. The filling device 6 is slidably installed on the outer ring of the slide bar 26. Rollers are rotatably installed on both sides of the middle template 4 on the top of the slide bar 26. The shape of the rollers is adapted to the arc groove.

[0029] After setting the slide bar 26, the middle template 4 can slide out of the mold frame 2, so that the bottom template 23 can directly contact the upper template 5 for pressing. At the same time, it is convenient for the filling device 6 to fill the bottom template 23 or the middle template 4 with material, which can connect the bottom template 23 and the middle template 4.

[0030] Please see Figures 1-5 A horizontal plate 61 is fixedly installed on one side of the filling device 6. A hopper 62 is fixedly installed on the top of the horizontal plate 61 in a linear array. The surface of the horizontal plate 61 is evenly provided with through grooves in a linear array. The hopper 62 is connected to the bottom surface of the horizontal plate 61. Pulleys 63 are rotatably installed on both sides of the filling device 6 above the slide bar 26. Limiting pulleys 64 are evenly rotatably installed on both sides of the filling device 6 below the slide bar 26 in a linear array. The limiting pulleys 64 are adapted to the shape of the bottom surface of the slide bar 26.

[0031] EVA granules are evenly placed inside the hopper 62. After the previous batch of shoe soles is completed, the filling device 6 is pushed into the mold frame 2 so that the through groove is above the mold groove 41, so that the material inside the hopper 62 can fall completely into the mold groove 41, achieving a good filling effect.

[0032] Please see Figures 1-5 A groove 65 is provided between the packing device 6 and the inside of the horizontal plate 61. A blocking plate 66 is slidably installed inside the groove 65. The surface of the blocking plate 66 is provided with a linear array of evenly distributed leakage holes 67, which correspond to the position of the through groove. A handle 68 is provided on one side of the blocking plate 66, which is located on the side of the packing device 6, so that the user can pull the blocking plate 66.

[0033] The device, such as the blocking plate 66, acts as a switch. After the material is placed inside the hopper 62, the filling device 6 needs to be slid into the mold frame 2 so that the through groove is above the mold groove 41. At this time, pull the handle 68 to move the blocking plate 66. When the position of the drain hole 67 overlaps with the position of the through groove, the material inside the hopper 62 can fall into the mold groove 41, achieving a good locking effect. After pushing the handle 68 inward, the material conveying from the hopper 62 into the mold groove 41 can be disconnected.

[0034] Working principle: The material is evenly filled into the hopper 62, and the filling device 6 is pushed into the mold frame 2. When the position of the through groove corresponds to the position of the mold groove 41, the handle 68 is pulled to allow the material in the hopper 62 to fall into the mold groove 41, achieving rapid filling. After filling is completed, the filling device 6 is pulled out of the mold frame 2, and the hydraulic press device 21 is started. The output shaft of the hydraulic press device 21 drives the top block 22 to rise, and at the same time, the sliding shaft 25 assists the top block 22 to rise smoothly. When the bottom template 23 hits the bottom surface of the middle template 4, the top mold groove 41 of the bottom template 23 contacts the protrusion at the bottom of the middle template 4. The bottom template 23 drives the middle template 4 to rise simultaneously. The hydraulic press device 21 lifts the top of the middle template 4 and the bottom of the upper template 5, and the top of the bottom template 23 and the bottom of the middle template 4, without gaps. At this time, the foaming and molding effect of the material inside the top mold groove 41 of the bottom template 23 and the middle template 4 is completed. The hydraulic press device 21 drives the top block 22 to fall down. When the middle template 4 falls to the top of the slide bar 26, the middle template 4 slides out of the mold frame 2. The top block 22 is lifted again, so that the material inside the top mold groove 41 of the bottom template 23 is bonded to the material bonded to the bottom protrusion of the upper template 5, realizing the molding of multi-layer material.

Claims

1. A multi-color EVA foam mold for shoe soles, comprising a base (1), characterized in that: A mold frame (2) is fixedly installed on one side of the top of the base (1). A hydraulic press device (21) is fixedly installed between the inner bottom wall of the mold frame (2) and the inside of the base (1). A top block (22) is fixedly installed on the top surface of the output shaft of the hydraulic press device (21). A bottom template (23) is snapped into the groove at the top of the top block (22). A control device (3) is fixedly installed on the top of the base (1) on one side of the mold frame (2). A button group (31) is provided on one side of the control device (3). A middle template (4) is slidably installed inside the mold frame (2). The top surfaces of the middle template (4) and the bottom template (23) are linearly arrayed with mold grooves (41). An upper template (5) is fixedly installed on the inner top wall of the mold frame (2). The bottom surfaces of the upper template (5) and the middle template (4) are provided with protrusions that match the shape of the mold grooves (41). A filling device (6) is slidably installed inside the mold frame (2).

2. The shoe sole mold for multi-color EVA foaming according to claim 1, characterized in that: Side cylinders (24) are fixedly installed symmetrically on both sides of the top block (22) and the base (1). Sliding shafts (25) are fixedly sleeved inside the side cylinders (24) on both sides of the top block (22). The sliding shafts (25) are slidably installed inside the side cylinders (24) on both sides of the base (1).

3. The shoe sole mold for multi-color EVA foaming according to claim 2, characterized in that: The mold frame (2) has slide bars (26) evenly fixedly installed in an array on its two inner walls. The top of the slide bar (26) has an arc groove. The filling device (6) is slidably installed on the outer ring of the slide bar (26). Rollers are rotatably installed on both sides of the middle template (4) on the top of the slide bar (26). The shape of the rollers is adapted to the arc groove.

4. The shoe sole mold for multi-color EVA foaming according to claim 3, characterized in that: A horizontal plate (61) is fixedly installed on one side of the filling device (6). A hopper (62) is fixedly installed on the top of the horizontal plate (61) in a linear array. A through groove is evenly opened on the surface of the horizontal plate (61) in a linear array. The hopper (62) is connected to the bottom surface of the horizontal plate (61). Pulleys (63) are rotatably installed on both sides of the filling device (6) above the slide bar (26). Limiting pulleys (64) are evenly rotatably installed on both sides of the filling device (6) below the slide bar (26) in a linear array. The limiting pulleys (64) are adapted to the bottom surface shape of the slide bar (26).

5. The shoe sole mold for multi-color EVA foaming according to claim 4, characterized in that: A groove (65) is provided between the filling device (6) and the inside of the horizontal plate (61). A blocking plate (66) is slidably installed inside the groove (65). The surface of the blocking plate (66) is provided with a linear array of evenly distributed leakage holes (67). The leakage holes (67) correspond to the positions of the through grooves. A handle (68) is provided on one side of the blocking plate (66) located on the side of the filling device (6).

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