EVA material three-in-one composite forming die with edge pressing device

Abstract

The utility model discloses an EVA material three-in-one composite forming die with an edge pressing device, which comprises an upper die holder, a lower die holder, a push plate, a female die, a pressing plate, a male die and a first spring, the female die is fixed at the lower end of the upper die holder, the male die is fixed at the upper end of the lower die holder, the male die is positioned right below the female die, and the first spring is fixed on the lower die holder. The pressing plate is fixed to the upper die base through a first spring, the pressing plate is provided with an avoiding hole allowing the female die to penetrate through, an ejector rod penetrating through the bottom of the female die is fixed to the bottom of the push plate, and the push plate is connected with an elastic mechanism driving the push plate to move upwards. Compared with the prior art, in the leather forming process, automatic cutting and demolding are achieved, manual operation is reduced, and production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a three-in-one composite molding mold of EVA materials with an edge pressing device. Background Art

[0002] EVA (ethylene-vinyl acetate copolymer) is a thermoplastic resin (polymer material) produced by polymerization reaction of ethylene (E) and vinyl acetate (VA). EVA is relatively soft and has deformation errors in the cutting and heating processes. It is not resistant to high temperatures and will soften to a certain extent after being exposed to relative temperatures. It cannot be demolded smoothly during the molding process after passing through the heating furnace and will stick to the mold. The demolding process is more dependent on manual labor, thus limiting production efficiency. Utility Model Content

[0003] The utility model provides an EVA material three-in-one composite molding die with an edge pressing device, which is used to solve the problem that the molded material is adhered to the mold and is difficult to be automatically demoulded.

[0004] The utility model provides an EVA material three-in-one composite molding die with a pressing device, comprising: an upper die base, a lower die base, a push plate, a die, a pressure plate, a punch and a first spring, wherein the die is fixed to the lower end of the upper die base, the punch is fixed to the upper end of the lower die base, the punch is located directly below the die, the pressure plate is fixed to the upper die base through the first spring, the pressure plate is provided with an avoidance hole for the die to pass through, a push rod passing through the bottom of the die is fixed to the bottom of the push plate, and the push plate is connected to an elastic mechanism for driving it to move upward.

[0005] Preferably, the outer side of the male die is provided with a pressing groove matched with the die wall of the female die, and the outer side of the die wall of the female die matches with the pressing groove.

[0006] Preferably, the elastic mechanism includes: an upper wedge block, a lower wedge block and a second spring, the upper wedge block is fixed to the push plate, the upper wedge block cooperates with the lower wedge block, the lower wedge block is fixed to the lower die base through the second spring, and the lower wedge block slides horizontally along the lower die base.

[0007] Preferably, the elastic mechanism further comprises a vertical plate, the vertical plate is fixed on the lower die base, and the two ends of the second spring are respectively fixed to the vertical plate and the lower wedge block.

[0008] Preferably, a guide rail is fixed on the lower die base, a sliding block is fixed at the bottom of the lower wedge block, and the sliding block slides along the guide rail.

[0009] Preferably, it also includes a screw rod, which passes through the vertical plate and is threadedly connected to the lower wedge block, the screw rod is slidably connected to the vertical plate, and the screw rod is inserted into the second spring.

[0010] Preferably, wing plates are respectively extended outwardly from both ends of the push plate, and the wing plates extend out of the upper mold base and are fixed to the upper wedge block.

[0011] Preferably, the outer side of the die and the groove wall of the pressing groove are respectively provided with steel rings.

[0012] Preferably, the ejector pin passes through the mold wall of the concave mold.

[0013] Preferably, a guide rod is slidably arranged between the upper die seat and the pressure plate.

[0014] Compared with the prior art, in the utility model, the conveying mechanism delivers the leather material to the top of the punch, the upper die seat moves down, and after it drops to a certain height, the elastic mechanism drives the push plate to move up and push it against the upper die seat. At this time, the front end of the push rod is flush with the bottom of the die, and the upper die seat continues to move down, the pressure plate presses the leather material, and then the die enters the punch to cut the leather material, and then the die continues to move down and completes the molding of the leather material with the punch. After molding, the lower die seat moves up, and after it moves up to a certain height, the elastic mechanism loses its effect on the push plate, and the push plate falls down on the die, and the push rod pushes the molded leather material out of the die to complete demoulding. In the process of leather molding, the utility model realizes automatic cutting and demoulding, reduces manual operation, and is conducive to improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is the front view of the utility model;

[0018] Figure 3 A cross-sectional schematic diagram of the utility model;

[0019] Figure 4 Another cross-sectional schematic diagram of the utility model;

[0020] Figure 5 It is a partial structural schematic diagram of the utility model.

[0021] Reference numerals:

[0022] 1. Upper die base, 2. Lower die base, 3. Push plate, 4. Concave die, 5. Press plate, 6. Punch, 7. First spring, 8. Push rod, 9. Elastic mechanism, 91. Upper wedge block, 92. Lower wedge block, 93. Second spring, 94. Vertical plate, 95. Guide rail, 96. Slider, 97. Screw, 98. Wing plate, 100. Steel ring, 200. Guide rod, 300. Press groove. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See attached Figure 1 and attached Figure 3 The present embodiment provides an EVA material three-in-one composite molding die with a pressing device, comprising: an upper die base 1, a lower die base 2, a push plate 3, a die 4, a pressing plate 5, a punch 6 and a first spring 7. The die 4 is fixed to the lower end of the upper die base 1, the punch 6 is fixed to the upper end of the lower die base 2, and the punch 6 is located directly below the die 4. The pressing plate 5 is fixed to the upper die base 1 by the first spring 7. The pressing plate 5 is provided with an avoidance hole for the die 4 to pass through. A push rod 8 passing through the bottom of the die 4 is fixed to the bottom of the push plate 3. The push plate 3 is connected to an elastic mechanism 9 for driving it to move upward. The push plate 3 is arranged between the die 4 and the lower die base 2. When the elastic mechanism 9 does not apply a force to the push plate 3, the push plate 3 falls on the die 4 under the action of gravity. At this time, refer to the attached Figure 5 , the front end (bottom) of the push rod 8 extends out of the bottom of the die 4. The conveying mechanism conveys the leather material to the top of the punch 6, and the upper die seat 1 moves downward to drive the pressing plate 5, the push plate 3 and the die 4 to move downward. When it drops to a certain height, the elastic mechanism 9 drives the push plate 3 to move upward, thereby driving the push rod 8 to move upward. When the push plate 3 fits with the upper die seat 1, the bottom of the push rod 8 is flush with the bottom of the die 4. The upper die seat 1 continues to move downward, the pressing plate 5 first contacts the leather material and presses the leather material on the lower die seat 2, and then the die 4 cuts off the leather material when it enters the punch 6. The die 4 continues to move downward, and the cut leather material begins to be formed between the die 4 and the punch 6. After the molding is completed, the upper mold base 1 moves upward, and the female mold 4 leaves the male mold 6. After moving to a certain height, the elastic mechanism 9 no longer applies force to the push plate 3, and the push plate 3 falls on the female mold 4 under the action of gravity. The push plate 3 drives the push rod 8 to move downward, and the front end of the push rod 8 extends to push out the semi-finished product (molded leather material) on the female mold 4, thereby completing the automatic demoulding of the material. The leather material in this embodiment is made of EVA material.

[0025] One implementation method of cutting the leather material: the outer side of the male die 6 is provided with a pressing groove 300 adapted to the mold wall of the female die 4, and the outer side of the mold wall of the female die 4 matches the pressing groove 300. When the female die 4 moves downward, the outer side of the mold wall of the female die 4 enters the pressing groove 300 closely, and the leather material is cut off when the mold wall of the female die 4 enters the pressing groove 300.

[0026] An implementation method of the elastic mechanism 9 driving the push plate 3 to move upward: Figure 2 The elastic mechanism 9 includes: an upper wedge 91, a lower wedge 92 and a second spring 93. The upper wedge 91 is fixed to the push plate 3. The upper wedge 91 cooperates with the lower wedge 92. The lower wedge 92 is fixed to the lower die seat 2 through the second spring 93. The lower wedge 92 slides horizontally along the lower die seat 2. The upper wedge 91 and the lower wedge 92 are both two pieces. The two upper wedges 91 are distributed on both sides of the upper die seat 1. In the initial state, the upper wedge 91 and the lower wedge 92 are separated, the push plate 3 falls on the die 4, and the front end of the push rod 8 extends out of the die 4. When the leather needs to be formed, the upper die seat 1 moves downward to drive the upper wedge 91 to move downward. After it drops to a certain height, it contacts the lower wedge 92. Due to the action of the second spring 93, the lower wedge 92 pushes the upper wedge 91 to make it move upward relative to the upper die seat 1. After the push plate 3 moves upward and presses on the upper die seat 1, the upper wedge 91 pushes the lower wedge 92 to slide on the lower die seat 2. Through this structural design, the elastic mechanism 9 is arranged on both sides of the upper die base 1, and does not occupy the space between the upper die base 1 and the die 4. Secondly, the structural design of the die 4 is simplified, which is conducive to reducing the difficulty of production.

[0027] As another embodiment of the present invention: the elastic mechanism 9 further includes a vertical plate 94, which is fixed on the lower die base 2, and two ends of the second spring 93 are respectively fixed to the vertical plate 94 and the lower wedge block 92. Specifically, the vertical plate 94 is fixed to the lower die base 2 by bolts.

[0028] As another embodiment of the present invention: Figure 4 A guide rail 95 is fixed on the lower die base 2, and a slider 96 is fixed on the bottom of the lower wedge block 92, and the slider 96 slides along the guide rail 95. Specifically, a first groove is provided on the lower die base 2, and the guide rail 95 is fixed to the bottom of the first groove by bolts, and the slider 96 is located in the first groove.

[0029] As another embodiment of the utility model: this embodiment also includes a screw 97, which passes through the vertical plate 94 and is threadedly connected to the lower wedge block 92, and the screw 97 is slidably connected to the vertical plate 94, and the screw 97 is inserted into the second spring 93. The upper wedge block 91 moves downward to push the lower wedge block 92 to slide horizontally, and the lower wedge block 92 drives the screw 97 to move toward the vertical plate 94, and the second spring 93 is compressed.

[0030] As another embodiment of the utility model: both ends of the push plate 3 are respectively extended outward with wing plates 98, the wing plates 98 extend out of the upper die base 1 and are fixed to the upper wedge block 91, the upper end of the die 4 is a fixed block, the fixed block is fixed to the upper die base 1, the push plate 3 is located on the outside of the fixed block, and the push plate 3 is slidably connected to the fixed block.

[0031] As another embodiment of the present utility model: the outer side of the die 4 and the groove wall of the pressing groove 300 are respectively provided with steel rings 100, and the leather material is cut when the two steel rings 100 are staggered. This structural design is conducive to cutting the leather material.

[0032] As another embodiment of the present invention: the ejector rod 8 passes through the mold wall of the die 4 .

[0033] As another embodiment of the present utility model: a guide rod 200 is slidably arranged between the upper die base 1 and the pressing plate 5. Specifically, the guide rod 200 is fixed to the pressing plate 5, and the guide rod 200 is slidably connected to the upper die base 1. Through this structural design, the pressing plate 5 can move up and down smoothly.

[0034] In the utility model, the conveying mechanism delivers the leather material to the top of the punch 6, the upper die seat 1 moves down, and after it drops to a certain height, the elastic mechanism 9 drives the push plate 3 to move up and push it against the upper die seat 1. At this time, the front end of the push rod 8 is flush with the bottom of the die 4, the upper die seat 1 continues to move down, the pressing plate 5 presses the leather material, and then the die 4 cuts the leather material when it enters the punch 6, and then the die 4 continues to move down and completes the molding of the leather material with the punch 6. After molding, the lower die seat 2 moves up, and after it moves up to a certain height, the elastic mechanism 9 loses its effect on the push plate 3, and the push plate 3 falls down on the die 4, and the push rod 8 pushes the molded leather material out of the die 4 to complete demolding. In the process of leather molding, the utility model realizes automatic cutting and demolding, reduces manual operation, and is conducive to improving production efficiency.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A three-in-one composite molding die for EVA material with a pressing device, characterized in that: include: An upper die base, a lower die base, a push plate, a die, a pressure plate, a punch and a first spring, the die is fixed at the lower end of the upper die base, the punch is fixed at the upper end of the lower die base, the punch is located directly below the die, the pressure plate is fixed to the upper die base by the first spring, the pressure plate is provided with an avoidance hole for the die to pass through, a push rod passing through the bottom of the die is fixed to the bottom of the push plate, and the push plate is connected to an elastic mechanism for driving it to move upward.

2. The EVA material three-in-one composite molding die with a clamping device according to claim 1, characterized in that: The outer side of the male die is provided with a pressing groove matched with the die wall of the female die, and the outer side of the die wall of the female die matches with the pressing groove.

3. The EVA material three-in-one composite molding die with a clamping device according to claim 1, characterized in that: The elastic mechanism includes: an upper wedge block, a lower wedge block and a second spring. The upper wedge block is fixed to the push plate, the upper wedge block cooperates with the lower wedge block, the lower wedge block is fixed to the lower die base through the second spring, and the lower wedge block slides horizontally along the lower die base.

4. The EVA material three-in-one composite molding die with a clamping device according to claim 3, characterized in that: The elastic mechanism also includes a vertical plate, which is fixed on the lower die base, and two ends of the second spring are respectively fixed to the vertical plate and the lower wedge block.

5. The EVA material three-in-one composite molding die with a edge holding device according to claim 4, characterized in that: A guide rail is fixed on the lower die seat, a sliding block is fixed on the bottom of the lower wedge block, and the sliding block slides along the guide rail.

6. The EVA material three-in-one composite molding die with a clamping device according to claim 5, characterized in that: It also includes a screw rod, which passes through the vertical plate and is threadedly connected to the lower wedge block. The screw rod is slidably connected to the vertical plate, and the screw rod is inserted into the second spring.

7. The EVA material three-in-one composite molding die with a clamping device according to claim 6, characterized in that: Both ends of the push plate are respectively provided with wing plates extending outwards, and the wing plates extend out of the upper die seat and are fixed to the upper wedge block.

8. The three-in-one composite molding die of EVA material with a edge holding device according to claim 2, characterized in that: The outer side of the concave die and the groove wall of the pressing groove are respectively provided with steel rings.

9. The EVA material three-in-one composite molding die with a clamping device according to claim 1, characterized in that: The ejector pin passes through the mold wall of the female mold.

10. The EVA material three-in-one composite molding die with a edge holding device according to claim 1, characterized in that: A guide rod is slidably arranged between the upper die seat and the pressing plate.

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