Porous stamping die for automobile parts

Abstract

The utility model relates to punch die technical field, concretely is a kind of automobile parts porous punch die, including upper die holder, crossbeam, lower die holder and pressure groove, four lateral surfaces of the upper die holder are uniformly fixed and installed with upper die, the top of the lower die holder is fixedly installed with lower die, the center of the both ends of the upper die holder is fixedly connected with the shaft, the both sides of the crossbeam bottom are fixedly connected with vertical plate, and the die holder is rotatably connected between two vertical plates by the both ends of the shaft. Advantage lies in: after pressure groove is connected with the hydraulic cylinder of punch equipment by connecting piece, when punching, pressure groove and upper die holder descend, after the upper die of the bottom of upper die holder falls on the metal plate on lower die, upper die holder stops descending, until pressure groove is pressed on the edge of the top surface of upper die holder, force will be applied to upper die holder, the upper die of the bottom of upper die holder descends and punches the metal plate, so that the shaft is not stressed, therefore the shaft is not easy to bend and damage, and structure is simple, and cost is low.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and in particular to a multi-hole stamping die for automotive parts. Background Technology

[0002] In the manufacturing process of automotive parts, it is often necessary to punch holes in the metal sheet workpieces of automotive parts, which requires the use of stamping dies.

[0003] Chinese patent CN222569022U discloses a multi-hole stamping die for metal processing. This die features hydraulic telescopic rods on both sides of a fixed frame, with limiting blocks connected to the output ends of the telescopic rods. Limiting slots are provided on both sides of the upper die base. By extending the hydraulic telescopic rods, the limiting blocks are inserted into the limiting slots, providing additional limiting and fixing to the upper die base. This ensures greater stability during upper die operation and prevents rotational deviation. However, this limiting mechanism has the following drawbacks in use:

[0004] When the upper die base descends to punch the metal sheet of the automotive parts, the reaction force of the upper die base being pressed down will act on the output end of the rotating shaft and the hydraulic telescopic rod. The hydraulic telescopic rod and the rotating shaft are prone to bending and deformation and damage when subjected to shear force. Furthermore, the use of multiple hydraulic telescopic rods also requires the equipment of hydraulic pumps, hydraulic oil tanks and hydraulic pipelines, resulting in a more complex structure and higher manufacturing cost. Utility Model Content

[0005] The purpose of this utility model is to at least solve one of the technical defects described in the background art.

[0006] Therefore, one objective of this utility model is to propose a multi-hole stamping die for automotive parts, which aims to solve the problems of existing multi-hole stamping dies for metal processing, which use hydraulic telescopic rods to drive limit blocks to provide additional limiting and fixing to the upper die base. These problems include the easy bending, deformation and damage of the output end and rotating shaft of the hydraulic telescopic rod, as well as the complex structure and high cost.

[0007] To achieve the above objectives, one embodiment of this utility model provides a multi-hole stamping die for automotive parts, including an upper die base, a crossbeam, a lower die base, and a pressing groove. Upper dies are fixedly mounted on all four sides of the upper die base, and a lower die is fixedly mounted on the top of the lower die base. A rotating shaft is fixedly connected to the center of each end of the upper die base, and upright plates are fixedly connected to both sides of the bottom of the crossbeam. The upper die base is rotatably connected between the two upright plates via the rotating shafts at both ends. A motor is mounted on one side of one of the upright plates, and the output shaft of the motor is fixedly connected to one of the rotating shafts. The pressing groove is located between the upper die base and the crossbeam. A groove is provided at the bottom of the pressing groove, allowing the upper die to be inserted into the groove. A connector is fixedly connected to the center of the top of the pressing groove, and a slot corresponding to the connector is opened at the center of the top of the crossbeam.

[0008] Furthermore, two guide rods are fixedly connected to the top of the pressure groove, and a linear bearing is installed on the crossbeam. The guide rods are slidably inserted into the interior of the linear bearing, which can improve the stability of the pressure groove's lifting and lowering.

[0009] The beneficial effects are as follows: After the groove is connected to the hydraulic cylinder of the stamping equipment through the connector, when punching, the hydraulic cylinder of the hydraulic equipment extends, the groove and the upper die base descend. When the upper die at the bottom of the upper die base falls on the metal sheet on the lower die, the upper die base stops descending. When the groove presses on the edge of the top surface of the upper die base, it will apply force to the upper die base, causing the upper abrasive at the bottom of the upper die base to descend and punch the metal sheet, thereby completing the punching. As a result, the rotating shaft will not be subjected to force, so the rotating shaft is not easy to bend and be damaged. Moreover, the structure is simple and the cost is low.

[0010] In a preferred embodiment, mounting grooves are provided on all four sides of the upper mold base. Multiple fixing grooves are provided inside the mounting grooves, and receiving grooves communicating with the multiple fixing grooves are provided inside the mounting grooves. Positioning seats are fixed inside the multiple fixing grooves by bolts. A transmission rod is rotatably connected inside the multiple positioning seats. Two L-shaped buckles with opposite moving directions are threaded on the outer surface of the transmission rod. The two L-shaped buckles are slidably connected in the receiving groove.

[0011] Furthermore, both ends of the upper mold base are provided with through holes communicating with the receiving groove, and both ends of the transmission rod are provided with connecting grooves. A hex wrench can be inserted through the through holes and into the connecting grooves to rotate the transmission rod and drive the two L-shaped buckles to move.

[0012] Furthermore, the back of the upper mold has two symmetrical slots, and one side of each slot has a card slot.

[0013] The beneficial effects are as follows: When the upper mold is placed into the mounting slot, the two L-shaped buckles in the mounting slot are inserted into the two slots on the back of the upper mold respectively. By rotating the transmission rod, the two L-shaped buckles are moved away from each other. At this time, the L-shaped buckles can be locked into the slots, thereby fixing the upper mold in the mounting slot. The upper mold can be removed by reversing the operation. Therefore, the upper mold can be disassembled by rotating the transmission rod from one side of the upper mold base, making the disassembly and assembly of the upper mold more convenient.

[0014] In a preferred embodiment, a positioning groove is provided on the top of the lower mold base, and sliding grooves are fixedly connected to both sides of the top of the positioning groove. An L-shaped locking block is slidably connected inside the sliding groove. Limiting plates are fixedly connected to both sides of the top of the lower mold base, and a spring is fixedly connected between the L-shaped locking block and the limiting plate. Limiting grooves are provided on both sides of the lower mold.

[0015] Furthermore, a chute is provided inside the positioning groove, with one side of the chute penetrating one side of the lower die base, allowing the stamped waste material to slide out along the chute.

[0016] In a preferred embodiment, mounting holes are provided at the four corners of the bottom of the upper mold, and a nitrogen spring is fixedly installed inside the mounting holes. A pressure plate is fixedly installed at the piston rod end of the nitrogen spring, and the pressure plate has multiple through holes, each of which corresponds to a multiple punching pin on the upper mold.

[0017] The beneficial effects are as follows: During punching, the upper die base descends, and the pressure plate first presses on the upper surface of the metal sheet on the lower die. As it continues to descend, it applies downward pressure to the upper die base through the pressure groove, causing the nitrogen spring to contract. The punching needle below the upper die then passes through the hole to punch the metal sheet. For thinner metal sheets, the pressure plate can hold the metal sheet down, preventing the metal sheet from twisting and deforming due to punching.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the upper mold base and crossbeam of this utility model.

[0022] Figure 3 This is a schematic diagram of the positioning seat and transmission rod of this utility model.

[0023] Figure 4 This is a cross-sectional view of the back of the upper mold of this utility model.

[0024] Figure 5 This is a cross-sectional view of the lower mold base and a structural schematic diagram of the lower mold of this utility model.

[0025] Figure 6 This is a schematic diagram of the pressure groove structure of this utility model.

[0026] Figure 7 This is a schematic diagram of the upper mold in Embodiment 2 of this utility model.

[0027] The components are as follows: 1. Upper mold base, 11. Rotating shaft, 12. Mounting groove, 13. Fixing groove, 14. Receiving groove, 15. Positioning seat, 16. Transmission rod, 17. L-shaped buckle, 18. Through hole, 19. Connecting groove, 2. Crossbeam, 21. Vertical plate, 22. Motor, 23. Slot hole, 24. Linear bearing, 3. Lower mold base, 31. Positioning groove, 32. Slide groove, 33. L-shaped locking block, 34. Limiting plate, 35. Spring, 36. Slide, 4. Upper mold, 41. Slot, 42. Locking groove, 43. Mounting hole, 44. Nitrogen spring, 45. Pressure plate, 46. Through hole, 5. Lower mold, 51. Limiting groove, 6. Pressing groove, 61. Connecting piece, 62. Guide rod. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] This utility model provides a multi-hole stamping die for automotive parts.

[0031] Example 1:

[0032] like Figure 1As shown, it includes an upper mold base 1, a crossbeam 2, a lower mold base 3, an upper mold 4, a lower mold 5, and a pressing groove 6. A rotating shaft 11 is fixedly connected to the center of both ends of the upper mold base 1. A vertical plate 21 is fixedly connected to both sides of the bottom of the crossbeam 2. The upper mold base 1 is rotatably connected between the two vertical plates 21 through the rotating shafts 11 at both ends. A motor 22 is installed on one side of one of the vertical plates 21, and the output shaft end of the motor 22 is fixedly connected to one of the rotating shafts 11.

[0033] like Figure 2-3 As shown, the upper mold base 1 has mounting grooves 12 on all four sides. The mounting grooves 12 have multiple fixing grooves 13 inside, and the mounting grooves 12 have receiving grooves 14 that communicate with the multiple fixing grooves 13 inside. The multiple fixing grooves 13 are all fixed with positioning seats 15 by bolts. The multiple positioning seats 15 are rotatably connected with transmission rods 16. The transmission rods 16 are located in the receiving grooves 14. The outer surface of the transmission rods 16 is provided with two sections of threads in opposite directions. The transmission rods 16 are connected to two L-shaped buckles 17 through the two sections of threads. The two L-shaped buckles 17 are slidably connected in the receiving grooves 14. Since the two sections of threads are in opposite directions, the two L-shaped buckles 17 move in opposite directions when the transmission rods 16 are rotated. The upper mold base 1 has through holes 18 that communicate with the receiving grooves 14 at both ends, and the transmission rods 16 have connecting grooves 19 at both ends. A hex wrench can be inserted through the through holes 18 and into the connecting grooves 19 to rotate the transmission rods 16 and drive the two L-shaped buckles 17 to move.

[0034] like Figure 4 As shown, the back of the upper mold 4 has two symmetrical slots 41, and one side of each slot 41 has a slot 42, which, when combined with... Figure 2 and Figure 3 It can be seen that when the upper mold 4 is placed into the mounting groove 12, the two L-shaped buckles 17 in the mounting groove 12 are respectively inserted into the two slots 41 on the back of the upper mold 4. By rotating the transmission rod 16, the two L-shaped buckles 17 are moved away from each other. At this time, the L-shaped buckles 17 can be inserted into the slot 42, thereby fixing the upper mold 4 in the mounting groove 12.

[0035] like Figure 5As shown, a positioning groove 31 is provided on the top of the lower mold base 3. Slide grooves 32 are fixedly connected to both sides of the top of the positioning groove 31. An L-shaped locking block 33 is slidably connected inside the slide groove 32. Limiting plates 34 are fixedly connected to both sides of the top of the lower mold base 3. A spring 35 is fixedly connected between the L-shaped locking block 33 and the limiting plate 34. By pulling the L-shaped locking block 33 outward, it is moved away from the top of the positioning groove 31. Then the lower mold 5 is placed into the positioning groove 31. Limiting grooves 51 are provided on both sides of the lower mold 5. The L-shaped locking block 33 is inserted into the limiting groove 51 under the force of the spring 35, so that the lower mold 5 can be fixed on the lower mold base 3. A chute 36 is provided inside the positioning groove 31. One side of the chute 36 passes through one side of the lower mold base 3, so that the stamped waste can slide out along the chute 36.

[0036] like Figure 1 and Figure 6 As shown, the pressure groove 6 is located between the upper mold base 1 and the crossbeam 2. The bottom of the pressure groove 6 is provided with a groove body, so that the upper mold 4 can be inserted into the groove body. A connector 61 is fixedly connected to the center of the top of the pressure groove 6, and a slot 23 corresponding to the connector 61 is opened at the center of the top of the crossbeam 2. The hydraulic cylinder of the stamping equipment can pass through the slot 23 and connect with the connector 61 on the pressure groove 6, so that the hydraulic cylinder of the stamping equipment can drive the pressure groove 6 to rise and fall. When the top surface of the pressure groove 6 contacts the bottom surface of the crossbeam 2, the pressure groove 6 continues to rise, which can drive the crossbeam 2 and the upper mold base 1 to rise. Two guide rods 62 are fixedly connected to the top of the pressure groove 6. Two round holes are opened at the top of the crossbeam 2, and linear bearings 24 are installed in the round holes. The guide rods 62 are slidably inserted into the inside of the linear bearings 24, which can improve the stability of the pressure groove 6 rising and falling.

[0037] The working principle of this embodiment is as follows: After the pressure groove 6 is connected to the hydraulic cylinder of the stamping equipment through the connector 61, during use, the upper die base 1 is driven to rotate by the motor 22, thereby switching different upper dies 4 on the upper die base 1. Pulling the L-shaped locking block 33 can disassemble and replace the lower die 5 to correspond with the upper die 4. During stamping, the hydraulic cylinder of the hydraulic equipment extends, and the pressure groove 6 and the upper die base 1 descend. When the upper die 4 at the bottom of the upper die base 1 falls on the metal plate on the lower die 5, the metal plate supports the upper die 4, thereby stopping the descent of the upper die base 1. At this time, the hydraulic cylinder continues to extend, and the pressure groove 6 descends. When the pressure groove 6 presses on the edge of the top surface of the upper die base 1, it will apply force to the upper die base 1, so that the upper abrasive 4 at the bottom of the upper die base 1 stamps the metal plate, thereby completing the punching. Then the hydraulic cylinder retracts, raising the pressure groove 6. When the top surface of the pressure groove 6 contacts the bottom surface of the crossbeam 2, it can drive the upper die base 1 to rise. At this time, the metal plate of the stamped automotive parts can be taken out.

[0038] Example 2:

[0039] like Figure 7 As shown, based on Embodiment 1, mounting holes 43 are provided at the four corners of the bottom of the upper mold 4. A nitrogen spring 44 is fixedly installed inside the mounting hole 43. A pressure plate 45 is fixedly installed at the piston rod end of the nitrogen spring 44. The pressure plate 45 is provided with multiple through holes 46, which correspond one-to-one with multiple punching pins on the upper mold 4.

[0040] The working principle of this embodiment is as follows: During stamping, the upper die holder 1 descends, and the pressure plate 45 presses down on the upper surface of the metal sheet on the lower die 5. The hydraulic cylinder continues to extend and applies downward pressure to the upper die holder 1 through the pressure groove 6. The nitrogen spring 44 will then contract, and the punching needle below the upper die 4 will pass through the perforation 46 to punch the metal sheet. For thinner metal sheets, the pressure plate 45 can hold the metal sheet down, avoiding the problem of the metal sheet twisting and deforming due to punching.

Claims

1. A multi-hole stamping die for automotive parts, characterized in that, It includes an upper mold base (1), a crossbeam (2), a lower mold base (3) and a pressure groove (6). The upper mold (4) is fixedly installed on all four sides of the upper mold base (1), and the lower mold (5) is fixedly installed on the top of the lower mold base (3). The upper mold base (1) is fixedly connected to the center of both ends of the upper mold base (1), and the bottom sides of the crossbeam (2) are fixedly connected to the vertical plates (21). The upper mold base (1) is rotatably connected between the two vertical plates (21) through the rotating shafts (11) at both ends. A motor (22) is installed on one side of one of the vertical plates (21), and the output shaft end of the motor (22) is fixedly connected to one of the rotating shafts (11). The pressure groove (6) is located between the upper mold base (1) and the crossbeam (2). The bottom of the pressure groove (6) is provided with a groove body, so that the upper mold (4) can be inserted into the groove body. A connector (61) is fixedly connected at the center of the top of the pressure groove (6), and a slot (23) corresponding to the connector (61) is opened at the center of the top of the crossbeam (2).

2. The multi-hole stamping die for automotive parts according to claim 1, characterized in that, The upper mold base (1) has mounting grooves (12) on all four sides. The mounting grooves (12) have multiple fixing grooves (13) inside. The mounting grooves (12) also have receiving grooves (14) that communicate with the multiple fixing grooves (13). The multiple fixing grooves (13) are all fixed with positioning seats (15) by bolts. The multiple positioning seats (15) are rotatably connected with transmission rods (16). The outer surface of the transmission rods (16) is threaded with two L-shaped buckles (17) with opposite moving directions. The two L-shaped buckles (17) are slidably connected in the receiving grooves (14).

3. The multi-hole stamping die for automotive parts according to claim 2, characterized in that, Both ends of the upper mold base (1) are provided with through holes (18) that communicate with the receiving groove (14), and both ends of the transmission rod (16) are provided with connecting grooves (19).

4. The multi-hole stamping die for automotive parts according to claim 3, characterized in that, The upper mold (4) has two symmetrical slots (41) on its back side, and a slot (42) is provided on one side of each slot (41).

5. The multi-hole stamping die for automotive parts according to claim 1, characterized in that, The lower mold base (3) has a positioning groove (31) on its top. Both sides of the top of the positioning groove (31) are fixedly connected to a sliding groove (32). An L-shaped locking block (33) is slidably connected inside the sliding groove (32). Both sides of the top of the lower mold base (3) are fixedly connected to a limiting plate (34). A spring (35) is fixedly connected between the L-shaped locking block (33) and the limiting plate (34). The lower mold (5) has a limiting groove (51) on both sides.

6. The multi-hole stamping die for automotive parts according to claim 5, characterized in that, The positioning groove (31) has a chute (36) inside, and one side of the chute (36) passes through one side of the lower mold base (3).

7. The multi-hole stamping die for automotive parts according to claim 1, characterized in that, Two guide rods (62) are fixedly connected to the top of the pressure groove (6), and a linear bearing (24) is installed on the crossbeam (2). The guide rods (62) are slidably inserted into the interior of the linear bearing (24).

8. The multi-hole stamping die for automotive parts according to claim 1, characterized in that, Mounting holes (43) are provided at the four corners of the bottom of the upper mold (4). A nitrogen spring (44) is fixedly installed inside the mounting hole (43). A pressure plate (45) is fixedly installed at the piston rod end of the nitrogen spring (44). A plurality of through holes (46) are provided on the pressure plate (45). The plurality of through holes (46) correspond one-to-one with a plurality of punching pins on the upper mold (4).

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