Efficient continuous hot-pressing punching die

Abstract

The utility model provides an efficient continuous hot-pressing punching die which comprises a punching die body and a hot-pressing die body, a material belt sequentially passes through the punching die body and the hot-pressing die body, the punching die body punches the material belt, and the hot-pressing die body carries out hot-pressing forming on the material belt. The punching die comprises an upper die base, a first base plate, a first fixing plate, a first stripper plate, a first female die plate and a lower die base which are sequentially arranged, the first fixing plate is connected with a punching knife, the punching knife penetrates through a through groove of the first stripper plate, the first female die plate is provided with a cutting edge groove and a first female die insert, and the first female die insert is connected with the lower die base. The first female die insert extends into a through groove formed in the first female die plate, and the stamping knife and the cutting edge groove are correspondingly arranged. The first female die insert is movably connected with a lower ejector pin, the bottom face of the lower ejector pin is connected with the lower die base, and the lower ejector pin protrudes out of the upper surface of the first female die plate. According to the utility model, production automation is realized by matching with a material belt feeding device, the production efficiency is improved, the labor intensity of workers is reduced, and the large-batch production requirement is met.

Description

Technical Field

[0001] This utility model belongs to the field of production technology, specifically relating to a high-efficiency continuous hot-pressing punching die. Background Technology

[0002] In the manufacturing of electronic equipment components, for parts such as housings made of plastic, a punching and hot pressing process is commonly used. This process first requires slicing the raw material, then placing the sliced ​​sheets into a press for hot pressing, and finally using a punching die to cut the semi-finished product to obtain the required product shape and dimensions. This punching and hot pressing process allows for precise cutting according to product dimensions, and waste materials can be reused, improving material utilization, reducing material costs, and producing products with neat, smooth edges and good appearance quality. However, the production process requires individually placing the sliced ​​sheets into a jig for hot pressing, and then individually punching the semi-finished products, resulting in low production efficiency and low automation, which cannot meet the needs of large-scale automated production.

[0003] Therefore, the above problems urgently need to be solved. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above shortcomings, this utility model provides a high-efficiency continuous hot pressing die that can directly punch and hot press the strip without cutting it into pieces, thereby reducing the labor intensity of workers and improving production efficiency. When combined with an automatic strip feeding device, the production process is automated, meeting the needs of mass production.

[0005] Technical Solution: To achieve the above objectives, this utility model provides a high-efficiency continuous hot-pressing die, including a punching die and a hot-pressing die, which are arranged adjacent to each other. The strip material passes through the punching die and the hot-pressing die sequentially. The punching die punches the strip material, and the hot-pressing die hot-presses the strip material to form it. The punching die includes an upper die base, a first backing plate, a first fixing plate, a first stripper plate, a first concave die plate, and a lower die base arranged sequentially. A punch is connected to the first fixing plate and penetrates into a through groove in the first stripper plate. The first concave die plate is provided with a cutting edge groove and a first concave die insert. The first concave die insert is connected to the lower die base and extends into the through groove provided in the first concave die plate. The punch and the cutting edge groove are correspondingly provided. A lower ejector pin is movably connected to the first concave die insert. The bottom surface of the lower ejector pin is connected to the lower die base, and the lower ejector pin protrudes from the upper surface of the first concave die plate. During the production process, a feeder transports the strip material from one side of the punching die to the other side of the hot pressing die. The punching die pre-cuts the strip, and then the hot pressing die heat-presses it into shape. Finally, production personnel use a punching machine to cut the strip into finished products. This improves production efficiency, reduces labor intensity, enhances production automation, and meets the needs of mass production. Furthermore, the punching die is equipped with ejector pins. During the punching process, the ejector pins press the strip to form a bulge, avoiding defects such as product breakage caused by single-pass punching and improving product quality.

[0006] Furthermore, in the aforementioned high-efficiency continuous hot-pressing die, the cutting edge groove includes a first cutting edge groove and a second cutting edge groove, which are arranged in parallel. The first cutting edge groove is longer than the second cutting edge groove. This arrangement ensures that the strip conforms to the product's external dimensions after punching, enabling precise control of dimensional accuracy and improving product quality.

[0007] Furthermore, in the aforementioned high-efficiency continuous hot-pressing punching die, the first fixed plate is connected to an upper ejector pin, which passes through a through groove provided in the first stripper plate. The upper and lower ejector pins are correspondingly positioned. The upper ejector pin and the first fixed plate are connected by a spring, and the upper ejector pin slides along the first stripper plate. During the punching process, the upper die holder moves towards the lower die holder, and the first stripper plate first contacts the strip. The first stripper plate is squeezed by the strip and moves towards the first fixed plate. As the first stripper plate moves, the upper ejector pin extends out of the strip, and the upper and lower ejector pins together squeeze the strip, preventing strip movement during punching and ensuring punching quality. The upper die holder continues to move towards the lower die holder, and the first stripper plate abuts against the first fixed plate. Then, the first stripper plate moves towards the lower die holder under the push of the first fixed plate, squeezing the strip. The lower ejector pin pushes the upper ejector pin towards the upper die holder, causing the strip to form a bulge. Simultaneously, the spring connecting the upper ejector pin and the first fixed plate is compressed. When the upper mold base and the lower mold base separate, the spring between the first stripper plate and the first fixed plate returns to its original state, the spring connecting the upper ejector pin and the first fixed plate also returns to its original state, and the upper ejector pin pushes the strip away, completing the stamping and shaping of the convex shape, ensuring that the shaping is in place, avoiding strip displacement, and ensuring product quality.

[0008] Furthermore, in the aforementioned high-efficiency continuous hot pressing die, a punch is connected to the first fixed plate. The punch passes through a through hole in the first stripper plate, and a cutting hole is provided in the first concave plate for the punch to extend into. The punch punches the strip through the positioning hole. Punching the positioning hole on the strip provides a positioning reference for the hot pressing die to hot press the strip, ensuring correct hot pressing position, avoiding strip feeding errors that could lead to positional deviation, ensuring consistent hot pressing, and improving product quality.

[0009] Furthermore, in the aforementioned high-efficiency continuous hot-pressing punching die, a first fixed plate is connected to a first positioning pin, which penetrates a through hole in the first stripper plate. The first concave die plate has a first positioning hole into which the first positioning pin extends. The lower die base has a blanking hole from which punching waste is ejected. During the punching process, the first positioning pin first contacts the strip, passes through it, and positions the strip, preventing it from shifting during punching and ensuring product dimensional accuracy.

[0010] Furthermore, in the aforementioned high-efficiency continuous hot-pressing die, the hot-pressing die includes, in sequence, an upper template, a second fixed plate, a second backing plate, a second convex template, a second concave template, and a lower template. The second convex template is provided with a punch, and the second concave template is provided with a die cavity, with the die cavity and punch being correspondingly arranged. During hot pressing, the punch presses the strip material into the die cavity. When the strip material is punched and conveyed to the hot-pressing die, the second convex template of the hot-pressing die moves towards the second concave template, and the punch presses the strip material into the die cavity for forming. This die enables rapid stamping, achieves automated production, improves production efficiency, and reduces production costs.

[0011] Furthermore, in the aforementioned high-efficiency continuous hot pressing die, the punch is provided with a heating hole, and a heating tube is installed inside the heating hole. The application of the heating tube can improve the ductility of the material, reduce material springback, improve the surface smoothness and flatness of the product, and improve the appearance and quality of the product.

[0012] Furthermore, in the aforementioned high-efficiency continuous hot-pressing die, a relief groove is provided on the side of the punch near the second concave die. The relief groove provides relief for the protrusions formed by the strip in the die, preventing the protrusions formed in the die from being squeezed.

[0013] Furthermore, in the aforementioned high-efficiency continuous hot-pressing die, a second die insert is slidably connected to the second die platen. The second die insert is connected to the top surface of the lower die platen, and the die cavity is located on the side of the second die insert near the second punch platen. A damping mechanism is connected to the lower die platen, and a top block is slidably connected to the second die insert. The top of the damping mechanism abuts against the top block, and the damping mechanism pushes the top block away from the top surface of the lower die platen. The top surface of the top block is higher than the bottom surface of the die cavity. The damping mechanism is a spring. During the stamping process, when the top block is squeezed by the punch, the top block moves downward, and the damping mechanism is compressed and deformed. When the stamping is completed, the punch and the second die insert separate, and the damping mechanism pushes the top block upward, pushing the strip out of the die cavity.

[0014] Furthermore, in the aforementioned high-efficiency continuous hot-pressing die, a second positioning pin is connected to the second backing plate. The second positioning pin passes through a through hole provided in the second convex plate, and a second positioning hole is provided in the second concave plate. The second positioning pin and the second positioning hole are correspondingly arranged. During the hot pressing process, the second positioning pin passes through the positioning hole punched in the previous process and extends into the second positioning hole to position the strip, avoiding errors in strip feeding that could cause positional deviation. By setting the second positioning pin to a conical shape, it can correct the strip's deviation, ensuring correct hot pressing position, ensuring hot pressing consistency, and improving product quality.

[0015] As can be seen from the above technical solution, this utility model has the following beneficial effects: This utility model is a high-efficiency continuous hot-pressing punching die, which automates production, improves production efficiency, reduces labor intensity, and meets the needs of mass production. It forms products in stages, avoiding defects such as cracking that occur with single-stage stamping, thus improving product quality. The design of upper and lower ejector pins to jointly extrude and shape the strip ensures proper shaping, prevents strip displacement, and ensures product quality. Pre-punching positioning holes on the strip provide a positioning reference for the hot-pressing die, ensuring correct hot-pressing position, avoiding strip feeding errors, ensuring consistent hot-pressing, and improving product quality. An ejector block is designed inside the die cavity to eject the strip, preventing it from becoming embedded in the die cavity and unable to escape, ensuring automated production. A heating tube is designed in the punch core to heat the strip during hot pressing, which improves material ductility, reduces material springback, improves product surface smoothness and flatness, and enhances product appearance and quality. Attached Figure Description

[0016] Figure 1 This is a front view of the punching die in the high-efficiency continuous hot pressing punching die of this utility model;

[0017] Figure 2 This is a front view of the hot pressing die in the high-efficiency continuous hot pressing punching die of this utility model;

[0018] Figure 3 This is a schematic diagram of the first fixing plate;

[0019] Figure 4 This is a schematic diagram of the first concave template;

[0020] Figure 5 This is a schematic diagram of the lower mold base;

[0021] Figure 6 This is a schematic diagram of the second pad;

[0022] Figure 7 This is a schematic diagram of the punch core;

[0023] Figure 8 This is a schematic diagram of the lower template.

[0024] In the diagram: 1. Punching die; 11. Upper die base; 12. First backing plate; 13. First fixing plate; 131. Punch; 132. Upper ejector pin; 133. Punch; 134. First positioning pin; 14. First stripper plate; 15. First die cavity; 151. Cutting edge groove; 1511. First cutting edge groove; 1512. Second cutting edge groove; 152. First die cavity insert; 1521. Lower ejector pin; 153. Cutting hole; 154. First positioning hole; 1 6. Lower mold base; 161. Blanking hole; 2. Hot press mold; 21. Upper template; 22. Second fixing plate; 23. Second pad plate; 24. Second punch template; 241. Punch core; 2411. Heating hole; 2412. Clearance groove; 242. Second positioning pin; 25. Second concave template; 251. Concave cavity; 252. Second concave insert; 2521. Ejector block; 253. Second positioning hole; 26. Lower template; 261. Damping mechanism. Detailed Implementation

[0025] Example 1

[0026] like Figure 1-2The diagram illustrates a high-efficiency continuous hot-pressing die, comprising a punching die 1 and a hot-pressing die 2, which are arranged adjacent to each other. A strip material passes sequentially through the punching die 1 and the hot-pressing die 2. The punching die 1 punches the strip material, and the hot-pressing die 2 hot-presses the strip material. The punching die 1 includes, in sequence, an upper die base 11, a first pad 12, a first fixing plate 13, a first stripper plate 14, a first concave die 15, and a lower die base 16. A punch 131 is connected to the first fixing plate 13 and penetrates the through groove of the first stripper plate 14. The first concave die 15 is provided with a cutting edge groove 151 and a first die insert 152. The first die insert 152 is connected to the lower die base 16 and extends into the through groove of the first concave die 15. The punch 131 and the cutting edge groove 151 are correspondingly provided. The first die insert 152 is movably connected to a lower ejector pin 1521. The bottom surface of the lower ejector pin 1521 is connected to the lower die base 16, and the lower ejector pin 1521 protrudes from the upper surface of the first die plate 15. The hot press mold 2 includes an upper die plate 21, a second fixing plate 22, a second pad plate 23, a second punch plate 24, a second die plate 25, and a lower die plate 26 arranged sequentially. The second punch plate 24 is provided with a punch core 241, and the second die plate 25 is provided with a die cavity 251. The die cavity 251 and the punch core 241 are correspondingly arranged. During hot pressing, the punch core 241 hot presses the strip into the die cavity 251.

[0027] like Figure 3-5 The high-efficiency continuous hot-pressing die shown has a cutting edge groove 151 including a first cutting edge groove 1511 and a second cutting edge groove 1512, which are arranged parallel to each other. The first cutting edge groove 1511 is longer than the second cutting edge groove 1512. A first fixed plate 13 is connected to an upper ejector pin 132, which passes through a through groove provided in a first stripper plate 14. The upper ejector pin 132 and the lower ejector pin 1521 are correspondingly arranged. The upper ejector pin 132 and the first fixed plate 13 are connected by a spring, and the upper ejector pin 132 slides along the first stripper plate 14. A punch 133 is connected to the first fixed plate 13, which passes through a through hole provided in the first stripper plate 14. A first concave die 15 has a cutting hole 153 for the punch 133 to extend into. The punch 133 punches the strip out of the positioning hole. The first fixed plate 13 is connected to the first positioning pin 134, which passes through the through hole of the first stripper plate 14. The first concave plate 15 is provided with the first positioning hole 154 for the first positioning pin 134 to extend into. The lower die base 16 is provided with the blanking hole 161, and the punching waste is ejected from the blanking hole 161.

[0028] like Figure 6-8The high-efficiency continuous hot-pressing punching die shown has a punch core 241 with a heating hole 2411, and a heating tube is installed inside the heating hole 2411. A clearance groove 2412 is provided on the side of the punch core 241 near the second die plate 25. A second die insert 252 is slidably connected to the second die plate 25, and the second die insert 252 is connected to the top surface of the lower die plate 26. The die cavity 251 is located on the side of the second die insert 252 near the second punch core 24. A damping mechanism 261 is connected to the lower die plate 26, and a top block 2521 (see...) is slidably connected to the second die insert 252. Figure 2 The damping mechanism 261 abuts against the top block 2521, pushing the top block 2521 away from the top surface of the lower template 26. The top surface of the top block 2521 is higher than the bottom surface of the cavity 251. The second pad 23 is connected to the second positioning pin 242. The second positioning pin 242 passes through the through hole provided in the second convex template 24, and the second concave template 25 is provided with the second positioning hole 253. The second positioning pin 242 and the second positioning hole 253 are correspondingly provided.

[0029] During the production process, a feeder is used to transport the strip material from one side of the punching die 1 to the other side of the hot pressing die 2. During the material transport process, the punching die 1 punches the strip material, and then the hot pressing die 2 hot presses the strip material to form a finished product. Finally, the production personnel use a punching machine to cut the strip material to form the finished product. The punching process of the punching die 1 includes: the upper die base 11 moves to the lower die base 16, the first stripper plate 14 and the first concave die plate 15 abut against each other, the spring provided between the first stripper plate 14 and the first fixed plate 13 is compressed, the distance between the first stripper plate 14 and the first fixed plate 13 is shortened, the first positioning pin 134 passes through the through hole provided in the first stripper plate 14 to position and fix the strip material, the punch 131 extends out of the first stripper plate 14 and punches the strip material. When the first stripper plate 14 and the first fixed plate 13 abut against each other, the punching is completed, and the punching waste is ejected from the discharge hole 161. Simultaneously, during the punching process, as the first stripper plate 14 moves towards the first fixed plate 13 under the pressure of the strip, the upper ejector pin 132 extends out of the first stripper plate 14, and the upper ejector pin 132 and the lower ejector pin 1521 jointly press the strip. The first stripper plate 14 and the first fixed plate 13 abut against each other, and then the first stripper plate 14 moves towards the lower mold base 16 under the push of the first fixed plate 13. The first stripper plate 14 presses the strip, and the lower ejector pin 1521 pushes the upper ejector pin 132 towards the upper mold base 11, causing the strip to form a convex shape. At the same time, the spring connected to the upper ejector pin 132 and the first fixed plate 13 is compressed. Simultaneously, the punch 133 extends into the cutting hole 153 and punches a positioning hole on the strip.

[0030] When the upper mold base 11 and the lower mold base 16 separate, the spring between the first stripper plate 14 and the first fixing plate 13 returns to its original state, the punch 131 retracts, the spring connecting the upper ejector pin 132 and the first fixing plate 13 returns to its original state, and the upper ejector pin 132 pushes the strip away, completing the stamping and shaping of the strip protrusion.

[0031] The strip is then fed into the hot press mold 2. The second punch 24 of the hot press mold moves towards the second concave mold 25. The second positioning pin 242 passes through the positioning hole reserved in the strip and extends into the second positioning hole 253 to correct and position the strip. Then, the punch 241 presses the strip into the concave mold cavity 251 to form the strip. The ejector block 2521 is squeezed by the punch 241 and moves downward. The damping mechanism 261 compresses and deforms the ejector block. When the second punch 24 and the second concave mold 25 come into contact, the stamping is completed. Then, the second punch 24 and the second concave mold 25 separate, the punch 241 and the second concave mold insert 252 separate, and the damping mechanism 261 pushes the ejector block 2521 upward. The ejector block 2521 pushes the strip out of the concave mold cavity 251. The hot pressing is completed. Finally, a punching machine is used to cut the strip to form the finished product.

[0032] The above embodiments are exemplary and are intended to illustrate the technical concept and features of this utility model, so that those skilled in the art can understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A high-efficiency continuous hot-pressing punching die, characterized in that: The device includes a punching die (1) and a hot pressing die (2), which are arranged adjacent to each other. The strip passes through the punching die (1) and the hot pressing die (2) in sequence. The punching die (1) punches the strip, and the hot pressing die (2) hot presses the strip. The punching die (1) includes an upper die base (11), a first pad (12), a first fixing plate (13), a first stripper plate (14), a first concave die plate (15), and a lower die base (16) arranged in sequence. The first fixing plate (13) is connected to a punch (131), and the punch (131) penetrates the first stripper plate. The material plate (14) has a through groove. The first concave template (15) is provided with a cutting edge groove (151) and a first concave mold insert (152). The first concave mold insert (152) is connected to the lower mold base (16). The first concave mold insert (152) extends into the through groove provided in the first concave template (15). The punch (131) and the cutting edge groove (151) are provided accordingly. The first concave mold insert (152) is movably connected to a lower ejector pin (1521). The bottom surface of the lower ejector pin (1521) is connected to the lower mold base (16). The lower ejector pin (1521) protrudes from the upper surface of the first concave template (15).

2. The high-efficiency continuous hot pressing and punching die according to claim 1, characterized in that: The cutting edge groove (151) includes a first cutting edge groove (1511) and a second cutting edge groove (1512), the first cutting edge groove (1511) and the second cutting edge groove (1512) are arranged in parallel; the first cutting edge groove (1511) is longer than the second cutting edge groove (1512).

3. The high-efficiency continuous hot pressing die according to claim 1, characterized in that: The first fixing plate (13) is connected to an upper ejector pin (132), which is inserted into a through groove provided in the first stripper plate (14). The upper ejector pin (132) and the lower ejector pin (1521) are respectively provided.

4. The high-efficiency continuous hot pressing die according to claim 1, characterized in that: The first fixing plate (13) is connected to a punch (133), the punch (133) is inserted into a through hole provided in the first stripping plate (14), and the first concave template (15) is provided with a cutting hole (153) for the punch (133) to extend into; the punch (133) punches the strip out of the positioning hole.

5. The high-efficiency continuous hot pressing die according to claim 1, characterized in that: The first fixing plate (13) is connected to the first positioning pin (134), the first positioning pin (134) passes through the through hole provided in the first stripper plate (14), and the first concave template (15) is provided with the first positioning hole (154) for the first positioning pin (134) to extend into; the lower die base (16) is provided with the blanking hole (161), and the punching waste is ejected from the blanking hole (161).

6. The high-efficiency continuous hot pressing die according to claim 1, characterized in that: The hot pressing mold (2) includes an upper template (21), a second fixing plate (22), a second pad plate (23), a second convex template (24), a second concave template (25), and a lower template (26) arranged in sequence; the second convex template (24) is provided with a punch (241), and the second concave template (25) is provided with a concave cavity (251), and the concave cavity (251) and the punch (241) are respectively arranged; during hot pressing, the punch (241) hot presses the material strip into the concave cavity (251).

7. The high-efficiency continuous hot pressing die according to claim 6, characterized in that: The punch (241) is provided with a heating hole (2411), and a heating tube is provided inside the heating hole (2411).

8. The high-efficiency continuous hot pressing die according to claim 6, characterized in that: The punch (241) is provided with a relief groove (2412) on the side near the second concave template (25).

9. The high-efficiency continuous hot pressing die according to claim 6, characterized in that: The second concave template (25) is slidably connected to a second concave mold insert (252), the second concave mold insert (252) is connected to the top surface of the lower template (26), and the concave cavity (251) is located on the side of the second concave mold insert (252) near the second convex template (24); the lower template (26) is connected to a damping mechanism (261), the second concave mold insert (252) is slidably connected to a top block (2521), the top of the damping mechanism (261) abuts against the top block (2521), the damping mechanism (261) pushes the top block (2521) away from the top surface of the lower template (26), and the top surface of the top block (2521) is higher than the bottom surface of the concave cavity (251).

10. The high-efficiency continuous hot pressing die according to claim 6, characterized in that: The second pad (23) is connected to a second positioning pin (242); the second positioning pin (242) passes through a through hole provided in the second convex template (24), and the second concave template (25) is provided with a second positioning hole (253), and the second positioning pin (242) and the second positioning hole (253) are respectively provided.

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