Hardware stamping die and punch

Abstract

The utility model provides a hardware stamping die, sets up the installation site on the die main part, and the stamping part that is composed of fixed module and symmetrical movable module can be detachably installed in the installation site. The cross section of the fixed module and the movable module is all trapezoidal, the movable module is slidably matched with the double sliding slot on the fixed module through the convex, so that it can be smoothly guided and gradually folded when moving up and down, thereby reducing the module spacing when jacking. The hardware lug after stamping is tightly attached to the movable module, the movable module is realized by jacking to be folded horizontally, a space smaller than the lug spacing is formed, workpiece jamming is avoided, smooth demolding is realized, and then the finished product qualification rate and production efficiency are significantly improved. The application also provides a punch, which carries the above die. When stamping the hardware with lug such as seat cooling fan frame, the punch can ensure one-time forming of the lug, rely on the jacking mechanism to push the movable module to fold, realize efficient demolding, avoid jamming, and improve automation and adaptability.

Description

Technical Field

[0001] This utility model relates to the technical field of equipment related to metal stamping, specifically to a metal stamping die and a punch press. Background Technology

[0002] Stamping dies for hardware parts are widely used in the forming and processing of structural components in automotive parts, home appliances, and mechanical equipment. Their main function is to apply pressure through a stamping press to plastically deform or separate metal sheets according to a predetermined die shape, thereby obtaining hardware parts with specific dimensions and shapes. In structures such as automotive seat cooling fan frames, it is often necessary to form irregularly shaped hardware parts with lugs. These types of hardware parts typically have lugs stamped at both ends of the main body, perpendicular to the main body, for subsequent assembly and fixation.

[0003] In existing technology, stamping dies generally consist of a die body and fixed stamping parts. After stamping, the lugs of the metal parts often adhere tightly to the forming surface of the die, making it easy for them to jam during manual removal and difficult to remove from the die. This is especially true for metal parts with vertical lugs, where interference between the lugs and the sidewalls of the die often requires operators to use tools or expend considerable force to remove them. This not only increases labor intensity but also easily damages the workpiece surface, reducing the yield rate of finished products.

[0004] To improve demolding performance, some molds incorporate spring-loaded ejector pins in their design, which push the workpiece out. However, for hardware parts with complex lug structures and high precision requirements, the ejector pins often cannot distribute force evenly, making it difficult to eject the workpiece. Therefore, it is necessary to provide a hardware stamping die and press with a reasonable structure that facilitates demolding while ensuring machining accuracy. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a hardware stamping die and a punch press, which effectively improves the problems that still exist in some traditional hardware stamping dies when processing hardware parts with seat cooling fan frames with lugs, such as difficulty in removing parts after stamping, low demolding efficiency, and easy damage to workpieces.

[0006] A metal stamping die is disclosed for producing metal parts for seat cooling fan frames. The metal part includes a main body and lugs at both ends of the main body. The main body is perpendicular to the lugs. The stamping die includes a die body and a stamping component detachably connected to the die body. A mounting position is recessed on one side of the die body's top surface and opposite to its bottom surface. The stamping component is detachably mounted on the mounting position. The stamping component includes a fixed module detachably fixed to the center of the mounting position and two movable modules symmetrically arranged on both sides of the fixed module and slidably connected to it, forming a cross-shaped cross section. Both the fixed module and the movable modules have trapezoidal cross sections. The two non-parallel sides of the fixed module extend towards the other side... The side recess is provided with a first slide groove and a second slide groove. The top and side of the first slide groove and the second slide groove are both open. The second slide groove is connected to the side of the first slide groove away from the side opening. The side of the second slide groove near the first slide groove is connected to the first slide groove, and the second slide groove is smaller than the first slide groove. The two movable modules are provided with a first protrusion and a second protrusion that are slidably connected to the first slide groove and the second slide groove on the side near the fixed module. The first protrusion and the second protrusion are connected. The fixed module is provided with a limit member at the bottom position of the first slide groove and the second slide groove. The width of the fixed module is slightly larger than the width of the movable module. The length of the mounting position is 1.5 to 5 times the length of the stamped part.

[0007] Preferably, both the first and second slides are slides with a trapezoidal cross-section.

[0008] Furthermore, the mounting position is a mounting hole, and a mounting plate is set in the middle of the bottom surface of the mounting hole. The width of the mounting hole with the mounting plate position is greater than the width of the mounting hole without the mounting plate position.

[0009] Preferably, a first semi-circular fixing hole is provided inward on both sides of the fixing module in the width direction, and a second semi-circular fixing hole is provided in the middle of both sides of the mounting position in the width direction to cooperate with the first semi-circular fixing hole.

[0010] Preferably, the limiting member is a limiting plate integrally formed on the bottom surface of the side with the larger area of ​​the fixing module.

[0011] Preferably, the bottom periphery of the mounting position where no mounting plate is provided is provided with abutment plates extending inward to abut against the periphery of the movable module.

[0012] Preferably, the length of the mounting position is three times the length of the stamped part.

[0013] A punch press includes a frame, a support platform is provided on the top of the frame, a stamping mechanism is provided above the support platform, a lifting mechanism is provided at the bottom of the support platform, and the aforementioned metal stamping die is provided on the support platform.

[0014] Preferably, the stamping mechanism includes a stamping cylinder and a punch disposed at the output end of the stamping cylinder. The punch has a concave cross-section, with one open side of the punch being an opening. The distance between the two opposite inner sidewalls of the punch is slightly greater than the sum of the stamping length of the assembled stamped part and twice the thickness of the hardware part.

[0015] Preferably, the lifting mechanism includes a lifting cylinder and a lifting head disposed at the output end of the lifting cylinder. The lifting head has a concave cross-section, with one open side of the lifting head being an opening. The distance between the two opposite inner sidewalls of the lifting head is less than the stamping length of the assembled stamped part and greater than the longest length of the fixing module.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This utility model provides a metal stamping die. An mounting position is provided on the die body, and a stamping part is detachably mounted within this position. The stamping part consists of a fixed module and symmetrically distributed movable modules. Both the fixed and movable modules have trapezoidal cross-sections. The movable modules are slidably connected to a first and a second slide groove on the fixed module via a first protrusion and a second protrusion, respectively. Since both the first and second slide grooves are open, and the second slide groove is smaller than the first slide groove, the movable modules can smoothly slide along the fixed module during vertical movement, gradually creating a closing effect, thus continuously reducing the distance between the movable modules during lifting. During the stamping process, the metal part is placed on the stamping part, and after stamping, the lugs at both ends of the part will fit tightly against the outside of the movable modules. When the movable module is lifted, due to the trapezoidal sliding fit between the movable and fixed modules, the movable module gradually moves closer together. The distance between the ends of the movable modules forms a space smaller than the spacing between the hardware lugs, thus preventing the lugs from jamming with the mold and allowing the hardware to be easily removed. This structure cleverly utilizes trapezoidal geometry and double-slide guides, enabling the movable module to move vertically while simultaneously closing laterally, significantly improving the problem of difficult part removal caused by lug interference in traditional molds. Therefore, the hardware stamping mold of this invention can ensure smooth demolding of hardware with lugs after stamping, significantly reducing the workpiece damage rate and improving the finished product qualification rate.

[0017] This application also provides a punch press, including the aforementioned hardware stamping die. By applying this hardware stamping die, when the punch press processes hardware parts with lugs, such as seat cooling fan frames, it can not only ensure that the lugs at both ends of the workpiece are formed in one step, but also, under the action of the lifting mechanism, the movable modules inside the die can retract along the fixed modules, gradually reducing the distance between the movable modules until a space smaller than the distance between the workpiece lugs is formed. This effectively solves the technical problem of the workpiece interfering with and getting stuck in the die after stamping, making it difficult to remove. Attached Figure Description

[0018] Figure 1 This is a top view of the stamped part after installation according to the present invention. Figure 2 This is a schematic diagram showing the cross-sectional comparison of the stamped part after installation and the movable module after being lifted, as described in this utility model. Figure 3 This is a schematic diagram of the cross-sectional structure of the stamped part after disassembly according to this utility model; Figure 4 This is a top view of the hardware stamping die of this utility model. Figure 5 This is a top view of the hardware component of this utility model before it is stamped. Figure 6 This is a schematic diagram of the side structure of the hardware component after stamping according to this utility model; Figure 7 This is a front view of the punch press described in this utility model. in: 10-Hardware parts, 11-Hardware body, 12-Support ear, 20-Mold body, 30-Stamping part, 21-Mounting position, 31-Fixed module, 32-Moving module, 33-First slide rail, 34-Second slide rail, 35-First protrusion, 36-Second protrusion, 37-Limiting part, 38-First semi-circular fixing hole, 39-Second semi-circular fixing hole, 41-Positioning pin, 42-Positioning hole, 50-Frame, 51-Bearing platform, 52-Stamping cylinder, 53-Punch, 54-Lifting cylinder, 55-Lifting head. Detailed Implementation

[0019] The embodiments described below are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0020] See Figures 1-6This embodiment provides a metal stamping die for producing a metal part 10 for a seat cooling fan frame. The metal part 10 includes a metal part body 11 and lugs 12 disposed at both ends of the metal part body 11. The metal part body 11 and the lugs 12 are perpendicular. The metal stamping die includes a die body 20 and a stamping part 30 detachably connected to the die body 20. A mounting position 21 is recessed on one side of the top surface of the die body 20 and opposite to the bottom surface. The stamping part 30 is detachably disposed on the mounting position 21. The stamping part 30 includes a fixing module 31 detachably fixed to the middle of the mounting position 21 and two movable modules 32 symmetrically disposed on both sides of the fixing module 31 and slidably connected to the fixing module 31 to form a cross-shaped cross-section. The cross-sections of the fixing module 31 and the movable modules 32 are both trapezoidal. The two non-parallel sides of the fixing module 31 both extend towards the other side. A first groove 33 and a second groove 34 are provided in the side recess. The top and side of the first groove 33 and the second groove 34 are both open. The second groove 34 is connected to the side of the first groove 33 away from the side opening. The side of the second groove 34 close to the first groove 33 is connected to the first groove 33, and the second groove 34 is smaller than the first groove 33. The two movable modules 32 are provided with a first protrusion 35 and a second protrusion 36 that are slidably connected to the first groove 33 and the second groove 34 on the side close to the fixed module 31. The first protrusion 35 is connected to the second protrusion 36. The fixed module 31 is provided with a limiting member 37 at the bottom position of the first groove 33 and the second groove 34. The width of the fixed module 31 is slightly larger than the width of the movable module 32. The length of the mounting position 21 is 1.5 to 5 times the length of the stamped part 30.

[0021] Preferably, both the first slide 33 and the second slide 34 have trapezoidal cross-sections. It should be noted that the longer parallel side of the first slide 33 and the second slide 34 is located closer to the center of the mold body 20, while the shorter parallel side is located further away from the center of the mold body 20. With this structural design, when the movable module 32 slides up and down along the slide, its protruding first protrusion 35 and second protrusion 36 can be effectively limited by the trapezoidal cross-section structure, preventing displacement or disengagement under impact or lifting forces. It should also be noted that the transverse cross-section of the first protrusion 35 and the second protrusion 36 is also trapezoidal.

[0022] Furthermore, the mounting position 21 is a mounting hole, and a mounting plate is set in the middle of the bottom surface of the mounting hole. The width of the mounting hole with the mounting plate is greater than the width of the mounting hole without the mounting plate. It should be noted that the mounting plate is adapted to the bottom of the wider side of the fixed module 31, so that the fixed module 31 can be stably mounted on the mounting plate. At the same time, since the width of the fixed module 31 is slightly larger than the width of the movable module 32, the width of the mounting hole with the mounting plate is designed to be greater than the width of the hole without the mounting plate, thereby ensuring that the fixed module 31 can be smoothly embedded and stably installed, while the movable module 32 achieves a restricted sliding fit in the relatively narrower hole. Through this differentiated hole width design, the installation stability of the fixed module 31 can be enhanced, preventing it from shaking or shifting due to force during stamping, and reasonable guiding space can be provided for the movable module 32, so that it maintains a good sliding effect during lifting movement, further improving the overall processing accuracy and demolding reliability of the mold.

[0023] Preferably, the fixing module 31 has a first semi-circular fixing hole 38 on both sides in the width direction, and the mounting position 21 has a second semi-circular fixing hole 39 at the middle of both sides in the width direction, which mates with the first semi-circular fixing hole 38. It should be noted that the first semi-circular fixing hole 38 and the second semi-circular fixing hole 39, when mated, form a complete circular fixing hole, allowing for the insertion and fixing of bolts or pins. Through this structural design, the fixing module 31 can be reliably positioned and locked to the mounting position 21 using bolts or pins during installation. This not only prevents the fixing module 31 from shifting or loosening due to vibration or impact loads during stamping, but also facilitates subsequent replacement and maintenance of the stamped part 30, achieving a detachable connection between the mold body 20 and the stamped part 30, thus improving the mold's service life and processing stability. It should also be noted that the sidewalls of the first semi-circular fixing hole 38 and the second semi-circular fixing hole 39 are provided with matching threads.

[0024] Preferably, the limiting member 37 is a limiting plate integrally formed on the bottom surface of the fixed module 31 on the side with the larger area. The limiting plate extends laterally along the bottom surface of the fixed module 31 and serves to stop the first protrusion 35 and the second protrusion 36 when the movable module 32 slides down. When the movable module 32 moves downward along the first slide groove 33 and the second slide groove 34, the first protrusion 35 and the second protrusion 36 are restricted to a preset position by the stopping action of the limiting plate, thereby preventing the movable module 32 from continuing to slide down and causing it to detach from the fixed module 31, and ensuring that the sliding stroke of the movable module 32 in the vertical direction is within a controllable range. At the same time, since the limiting plate is integrally formed with the fixed module 31, the overall strength and durability of the limiting member 37 are enhanced.

[0025] Preferably, in the mounting position 21 where no mounting plate is provided, the bottom periphery of the mounting position 21 is provided with abutment plates extending inward to abut against the periphery of the movable module 32. These abutment plates abut against the periphery of the bottom of the movable module 32, providing bottom support for the movable module 32 during the stamping of the hardware part 10. This ensures that the movable module 32 does not sink or tilt during the stamping process, thereby maintaining a stable sliding connection with the fixed module 31. Through this bottom support, the movable module 32 can move smoothly along a predetermined trajectory during lifting and retraction, avoiding displacement or jamming caused by uneven force or vibration. This improves the forming accuracy and demolding reliability of the stamped part 30, while also enhancing the overall stability and service life of the mold.

[0026] Preferably, the length of the mounting position 21 is three times the length of the stamped part 30. It should be noted that the longer mounting position 21 not only provides ample sliding and retraction space for the fixed module 31 and the movable module 32, but also ensures that the lugs 12 of the hardware part 10 have sufficient bending space during the stamping process. This allows the lugs 12 to bend accurately according to the design angle without being restricted by the edge of the mounting position 21, thereby avoiding deformation or stress concentration during stamping and ensuring the forming accuracy and appearance quality of the workpiece lugs 12. Simultaneously, the longer mounting position 21 also provides a stable guide channel for the movable module 32, improving the overall stability of the mold and the reliability of the stamping process.

[0027] Preferably, the mold body 20 is provided with three triangular positioning posts 41, and the hardware 10 is provided with three positioning holes 42 that are inserted and connected to the positioning posts 41.

[0028] The hardware stamping die provided by this utility model has an installation position 21 on the die body 20, and a stamping part 30 is detachably installed in the installation position 21. The stamping part 30 is composed of a fixed module 31 and symmetrically distributed movable modules 32. The cross-sections of both the fixed module 31 and the movable module 32 are designed as trapezoidal structures. The movable module 32 is slidably connected to the first slide groove 33 and the second slide groove 34 on the fixed module 31 through the first protrusion 35 and the second protrusion 36, respectively. Since the first slide groove 33 and the second slide groove 34 are both open structures, and the second slide groove 34 is smaller than the first slide groove 33, the movable module 32 can achieve smooth guiding sliding along the fixed module 31 during the up and down movement, and gradually produce a closing effect, thereby continuously reducing the distance between the movable modules 32 during lifting. During the stamping process, the hardware part 10 is placed on the stamping part 30, and after the stamping is completed, the lugs 12 at both ends of the hardware part 10 will be tightly attached to the outside of the movable module 32. When the movable module 32 is lifted, due to the trapezoidal sliding fit between the movable module 32 and the fixed module 31, the movable module 32 will gradually move closer together. The distance between the ends of the movable module 32 will form a space smaller than the spacing of the lugs 12 of the hardware part 10, thereby preventing the lugs 12 from jamming with the mold and allowing the hardware part 10 to be easily removed. This structure cleverly utilizes the trapezoidal geometric fit and double sliding groove guidance, enabling the movable module 32 to move vertically while simultaneously closing laterally, significantly improving the problem of difficult part removal caused by interference from the lugs 12 in traditional molds. Therefore, the hardware stamping mold of this utility model can ensure the smooth demolding of the hardware part 10 with lugs 12 after stamping, significantly reducing the workpiece damage rate and improving the finished product qualification rate.

[0029] See Figure 7 This embodiment also provides a punch press, which includes a frame 50. A support platform 51 is provided on the top of the frame 50. A stamping mechanism is provided above the support platform 51. A lifting mechanism is provided at the bottom of the support platform 51. The hardware stamping die is provided on the support platform 51.

[0030] Preferably, the stamping mechanism includes a stamping cylinder 52 and a punch 53 disposed at the output end of the stamping cylinder 52. The punch 53 has a concave cross-section, with one open side of the punch 53 being an opening. The distance between the two opposite inner sidewalls of the punch 53 is slightly greater than the sum of the stamping length of the assembled stamped part 30 and twice the thickness of the hardware part 10. When the hardware part 10 is stamped, the open end of the concave punch 53 faces downward. The stamping portions on both sides of the opening first abut against two positions in the middle of the hardware part 10. Then, the punch 53 continues to move downward, gradually applying stamping force to the hardware part 10, causing the lugs 12 at both ends in the length direction to gradually bend downward. After the support lug 12 is bent, the stamped hardware 10 is covered by the concave punch 53. At the same time, the inner wall of the support lug 12 is in close contact with the movable module 32 of the stamped part 30, and the outer wall of the support lug 12 is in close contact with the inner wall of the punch 53. Thus, the support lug 12 is bidirectionally constrained and guided during the stamping process, ensuring that the support lug 12 is accurately formed at the design angle, avoiding warping or displacement, and ensuring the overall forming accuracy and surface quality of the hardware 10.

[0031] Preferably, the lifting mechanism includes a lifting cylinder 54 and a lifting head 55 disposed at the output end of the lifting cylinder 54. The lifting head 55 has a concave cross-section, with one open side of the lifting head 55 being an opening. The distance between the two opposing inner sidewalls of the lifting head 55 is less than the stamping length of the assembled stamped part 30, but greater than the longest length of the fixed module 31. After stamping, the lifting cylinder 54 drives the lifting head 55 to lift the two movable modules 32 of the stamped part 30 upwards. The lifting portions at both ends of the opening of the concave cross-section of the lifting head 55 respectively abut against the bottom of the two movable modules 32, causing the movable modules 32 to slide along the fixed module 31 and the two movable modules 32 to gradually close together. As the distance between the movable modules 32 decreases, a space smaller than the distance between the lugs 12 of the hardware part 10 is formed, thereby making the distance smaller than the distance between the inner sidewalls of the two lugs 12, thus achieving smooth demolding. The uniform action of the lifting head 55 on the stamped part 30 not only ensures the stability of the retraction of the movable module 32, but also prevents the stamped part 30 and the hardware part 10 from getting stuck or damaged during demolding, thus improving demolding efficiency and the yield of the hardware part 10, while ensuring the reliability of the mold for repeated use. It should be noted that in this application, the support platform 51 is set to be hollowed out at the mounting position 21.

[0032] This application also provides a punch press, which includes the aforementioned metal stamping die. Through the application of this metal stamping die, when the punch press performs stamping processing on metal parts 10 with lugs 12, such as seat cooling fan frame 50, it can not only ensure that the lugs 12 at both ends of the workpiece are formed in one step, but also, under the action of the lifting mechanism, the movable module 32 inside the die can retract along the fixed module 31, causing the distance between the movable modules 32 to gradually decrease, ultimately forming a space smaller than the distance between the workpiece lugs 12. This effectively solves the technical problem of the workpiece interfering with and getting stuck in the die after stamping, making it difficult to remove.

[0033] The above-disclosed embodiments are merely some preferred embodiments of the present utility model, and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model patent application shall still fall within the scope of the present utility model.

Claims

1. A stamping die for producing hardware parts for seat cooling fan frames, the hardware part comprising a hardware body and lugs disposed at both ends of the hardware body, the hardware body being perpendicular to the lugs, characterized in that: The metal stamping die includes a die body and a stamping component detachably connected to the die body. A mounting position is recessed on one side of the die body's top surface and opposite to its bottom surface. The stamping component is detachably mounted on the mounting position. The stamping component includes a fixed module detachably fixed to the center of the mounting position, and two movable modules symmetrically arranged on both sides of the fixed module and slidably connected to it, forming a cross-shaped cross section. Both the fixed module and the movable modules have trapezoidal cross sections. A first groove and a second groove are recessed on both sides of the two non-parallel sides of the fixed module, extending towards the other side. The tops of the first groove and the second groove... Both sides are set as openings. The second slide groove is connected to the side of the first slide groove away from the opening on the side. The side of the second slide groove close to the first slide groove is connected to the first slide groove, and the second slide groove is smaller than the first slide groove. The two movable modules are provided with a first protrusion and a second protrusion that are slidably connected to the first slide groove and the second slide groove on the side close to the fixed module. The first protrusion and the second protrusion are connected. The fixed module is provided with a limit member at the bottom position of the first slide groove and the second slide groove. The width of the fixed module is greater than the width of the movable module. The length of the mounting position is 1.5 to 5 times the length of the stamping part.

2. The metal stamping die as described in claim 1, characterized in that, Both the first and second slides are slides with trapezoidal cross-sections.

3. The metal stamping die as described in claim 2, characterized in that, The mounting position is a mounting hole, and a mounting plate is set in the middle of the bottom surface of the mounting hole. The width of the mounting hole with the mounting plate is greater than the width of the mounting hole without the mounting plate.

4. The metal stamping die as described in claim 1, characterized in that, The fixing module has a first semi-circular fixing hole on both sides in the width direction, and a second semi-circular fixing hole that mates with the first semi-circular fixing hole is provided in the middle of both sides in the width direction of the mounting position.

5. The metal stamping die as described in claim 1, characterized in that, The limiting component is a limiting plate integrally formed on the bottom surface of the larger side of the fixing module.

6. The metal stamping die as described in claim 1, characterized in that, Where there is no mounting plate at the mounting position, the bottom surface of the mounting position extends inward to provide abutment plates for abutting against the periphery of the movable module.

7. The metal stamping die as described in claim 1, characterized in that, The length of the mounting position is three times the length of the stamped part.

8. A punch press, characterized in that, The punch press includes a frame, a support platform is provided on the top of the frame, a stamping mechanism is provided above the support platform, a lifting mechanism is provided at the bottom of the support platform, and a hardware stamping die as described in any one of claims 1 to 7 is provided on the support platform.

9. The punch press as described in claim 8, characterized in that, The stamping mechanism includes a stamping cylinder and a punch disposed at the output end of the stamping cylinder. The punch has a concave cross-section, and one side of the punch is set as an opening. The distance between the two opposite inner sidewalls of the punch is greater than the sum of the stamping length of the assembled stamped part and twice the thickness of the hardware part.

10. The punch press as described in claim 8, characterized in that, The lifting mechanism includes a lifting cylinder and a lifting head disposed at the output end of the lifting cylinder. The lifting head has a concave cross-section, and one side of the lifting head is set as an opening. The distance between the two opposite inner sidewalls of the lifting head is less than the stamping length of the assembled stamping part and greater than the longest length of the fixed module.

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