Side punching structure of a stamping die

Abstract

The utility model discloses a side punch structure of punch die relates to background art field, including upper die holder, pressing plate, side push block, lower die fixed base, lower die holder, sliding block, fixed plate, unloading plate, punch, rectangular spring, guide, base, first nitrogen gas spring, nitrogen gas spring limit block, positioning key block, inner guide pillar subassembly, second nitrogen gas spring, forced reset hook, the pressing plate is connected with second nitrogen gas spring through inner guide pillar subassembly, the side push block is inverted on the upper die holder, and the side push block is fixed on the upper die holder through screw and positioning key block. The utility model adopts above -mentioned structure, through the accurate orientation of guide to sliding block, the firm fixation of positioning key block and screw and the stable elastic force output of nitrogen gas spring, effectively promote the hole position accuracy and the position degree accuracy of side punch, reduce the hole position deviation, aperture deviation etc.

Description

Technical Field

[0001] This utility model belongs to the field of stamping die technology, and specifically relates to a side punch structure for a stamping die. Background Technology

[0002] In the stamping industry, many parts need to have holes on the side to meet assembly requirements. This requires the use of a side punching mechanism to convert the vertical motion force provided by the press into the horizontal motion force, thereby realizing power transmission and motion conversion, and finally completing the required stamping process on the side of the part.

[0003] However, in practical applications, existing side punching mechanisms often suffer from unstable power transmission and insufficient motion guidance accuracy, resulting in low hole position accuracy and positional accuracy. This can easily lead to problems such as hole position deviation and hole diameter deviation, resulting in a high workpiece scrap rate. At the same time, the reset structure design of some side punching mechanisms is unreasonable, resulting in untimely reset or reset deviation. This not only affects the efficiency of subsequent processing but may also cause collision damage to mold components, increasing mold maintenance costs and the risk of production interruption, making it difficult to meet the requirements of high-precision and high-efficiency stamping processing. Utility Model Content

[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a side punch structure for stamping dies to solve the problems mentioned in the background art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A side punch structure for a stamping die includes an upper die base, a pressure plate, a side push block, a lower die fixing base, a lower die base, a slider, a fixing plate, a stripper plate, a punch, a rectangular spring, a guide rail, a base, a first nitrogen spring, a nitrogen spring limit block, a positioning key block, an inner guide post assembly, a second nitrogen spring, and a forced reset hook. The pressure plate is connected to the second nitrogen spring via the inner guide post assembly; the side push block is inverted and mounted on the upper die base, and is fixed to the upper die base by screws and a positioning key block; a forced reset hook is inlaid on the side push block; and the lower die fixing base... The fixed base is fixed to the lower mold base by screws and positioning key blocks. The base is set on the lower mold fixed base. The slider is placed on the base and slides with the base through guide rails. The slider and the fixed plate are connected by screws and pins. The stripper plate and the fixed plate are connected by equal-height screws. The punch and the rectangular spring are both set between the fixed plate and the stripper plate. A wear-resistant block is set below the slider. The first nitrogen spring is fixed inside the base. The nitrogen spring limiting block is fixed on the bottom surface of the slider and is correspondingly set with the first nitrogen spring.

[0007] As a preferred technical solution, the base is provided with a hook guide, and the hook guide is correspondingly arranged with the slider.

[0008] As a preferred technical solution, the lower die fixing seat is provided with a blanking hole, and the blanking hole is correspondingly set with the punch.

[0009] As a preferred technical solution, the rectangular spring is sleeved on the outside of the equal-height screw, and the two ends of the rectangular spring abut against the fixing plate and the unloading plate, respectively.

[0010] As a preferred technical solution, the wear-resistant block is made of high-hardness wear-resistant material, and the wear-resistant block is fixed to the base by screws, with the upper surface of the wear-resistant block in contact with the lower surface of the slider.

[0011] As a preferred technical solution, the inner guide post assembly includes an inner guide post and an inner guide sleeve, wherein the inner guide post is fixed on the upper mold base and the inner guide sleeve is fixed on the pressure plate.

[0012] In summary, the present invention has the following main advantages:

[0013] First, this utility model effectively improves the hole position accuracy and positional accuracy of the side punch by using the guide rail to precisely guide the slider, the positioning key block and screw to firmly fix it, and the nitrogen spring to provide stable elastic force output. This reduces problems such as hole position offset and hole diameter deviation, significantly reduces the scrap rate of workpieces, and meets the requirements of high-precision stamping processing.

[0014] Secondly, this utility model, by means of the synergistic effect of the forced reset hook and the nitrogen spring, achieves rapid and precise reset of the slider, avoiding the problems of low processing efficiency and damage to mold components caused by untimely reset or reset deviation. At the same time, the setting of wear-resistant blocks, inner guide pillar components and other structures extends the service life of the mold, reduces the mold development and maintenance costs, and improves the overall processing stability and economy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model;

[0017] Figure 3 This is a utility model Figure 2 A magnified structural diagram at point A.

[0018] Reference numerals: 1. Part; 2. Upper die base; 3. Pressure plate; 4. Side push block; 5. Lower die fixing base; 6. Lower die base; 7. Slider; 8. Fixing plate; 9. Stripper plate; 10. Punch; 11. Rectangular spring; 12. Equal height screw; 13. Guide rail; 14. Wear-resistant block; 15. Base; 16. First nitrogen spring; 17. Nitrogen spring limiting block; 18. Hook guide; 19. Positioning key block; 20. Inner guide post assembly; 21. Second nitrogen spring; 22. Forced reset hook; 23. Drop hole. Detailed Implementation

[0019] Example

[0020] refer to Figures 1 to 3 This embodiment describes a side punch structure for a stamping die, comprising an upper die base 2, a pressure plate 3, a side push block 4, a lower die fixing base 5, a lower die base 6, a slider 7, a fixing plate 8, a stripper plate 9, a punch 10, a rectangular spring 11, a guide rail 13, a base 15, a first nitrogen spring 16, a nitrogen spring limiting block 17, a positioning key block 19, an inner guide post assembly 20, a second nitrogen spring 21, and a forced reset hook 22. The pressure plate 3 is connected to the second nitrogen spring 21 via the inner guide post assembly 20; the side push block 4 is inverted and mounted on the upper die base 2, and is fixed to the upper die base 2 by screws and the positioning key block 19; the side push block 4 is fitted with a forced reset hook 22. The lower mold fixing base 5 is fixed to the lower mold base 6 by screws and positioning key block 19. The base 15 is set on the lower mold fixing base 5. The slider 7 is placed on the base 15 and slides with the base 15 through guide rail 13. The slider 7 is connected to the fixing plate 8 by screws and pins. The stripper plate 9 is connected to the fixing plate 8 by equal height screws 12. The punch 10 and the rectangular spring 11 are both set between the fixing plate 8 and the stripper plate 9. A wear-resistant block 14 is set below the slider 7. The first nitrogen spring 16 is fixed inside the base 15. The nitrogen spring limiting block 17 is fixed to the bottom surface of the slider 7 and is correspondingly set with the first nitrogen spring 16.

[0021] refer to Figure 2 The base 15 is provided with a hook guide 18, which is correspondingly provided with the slider 7. During the horizontal movement of the slider 7 with the side push block 4, the hook guide 18 on the base 15 will cooperate with the side or specific protrusion structure of the slider 7. When the slider 7 moves to the preset stroke, the hook guide 18 will block the slider 7 from moving forward and limit the maximum movement distance of the slider 7. When the stamping ends and the slider 7 retracts, the hook guide 18 will also limit the retraction stroke of the slider 7 to avoid the slider 7 retracting too far and colliding with the base 15 or other components, ensuring that the slider 7 can return to the preset initial position each time.

[0022] refer to Figure 2 The lower die fixing seat 5 is provided with a blanking hole 23, which is correspondingly set with the punch 10. After the punch 10 punches into the workpiece 1 to complete the punching, the generated waste material will be removed from the workpiece 1 under the pushing force of the punch 10, and will fall into the blanking hole 23 on the lower die fixing seat 5 corresponding to the punch 10 under its own weight or the slight pushing force of the subsequent processing of the workpiece 1. The waste material moves downward along the channel of the blanking hole 23 and is finally discharged from the bottom of the mold, avoiding the accumulation of waste material inside the mold or on the surface of the workpiece 1.

[0023] refer to Figure 3 The rectangular spring 11 is sleeved on the outside of the equalizing screw 12, and the two ends of the rectangular spring 11 abut against the fixed plate 8 and the unloading plate 9 respectively. When the slider 7 drives the fixed plate 8, the unloading plate 9 and the punch 10 to move towards the workpiece 1, the unloading plate 9 first contacts the side of the workpiece 1. As the slider 7 continues to move forward, the unloading plate 9 is subjected to the reaction force of the workpiece 1 and begins to compress the rectangular spring 11 sleeved on the outside of the equalizing screw 12. The rectangular spring 11 is compressed and stores elastic potential energy. When the punching is completed and the slider 7 retracts, the rectangular spring 11 releases elastic potential energy and pushes the unloading plate 9 to move away from the workpiece 1, so that the unloading plate 9 is separated from the workpiece 1. At the same time, it helps the fixed plate 8 and the punch 10 return to their initial positions.

[0024] refer to Figure 2 The wear-resistant block 14 is made of high-hardness wear-resistant material and is fixed to the base 15 by screws. The upper surface of the wear-resistant block 14 is in contact with the lower surface of the slider 7. During the horizontal movement of the slider 7 with the side push block 4 or the reset with the nitrogen spring, the lower surface of the slider 7 will continuously contact and slide relative to the upper surface of the wear-resistant block 14 fixed on the base 15. The wear-resistant block 14 will bear the friction generated when the slider 7 moves, reducing the direct friction between the lower surface of the slider 7 and the upper surface of the base 15. At the same time, the smooth structure of the surface of the wear-resistant block 14 can reduce the movement resistance of the slider 7, making the slider 7 slide more smoothly.

[0025] refer to Figure 2 The inner guide post assembly 20 includes an inner guide post and an inner guide sleeve. The inner guide post is fixed on the upper mold base 2, and the inner guide sleeve is fixed on the pressure plate 3. When the upper mold base 2 drives the pressure plate 3 to move up and down, the inner guide sleeve fixed on the pressure plate 3 will slide along the inner guide post fixed on the upper mold base 2. The cooperation between the inner guide post and the inner guide sleeve will accurately guide the movement direction of the pressure plate 3, ensuring that the pressure plate 3 always moves up and down in the vertical direction without any left-right or front-back deviation.

[0026] Operating principle and advantages: First, place the workpiece 1 to be processed in the preset position of the lower die fixing seat 5 to ensure accurate positioning of the workpiece 1. Then, start the punch press. The punch press drives the assembled upper die structure, including the upper die seat 2, the pressure plate 3, the second nitrogen spring 21 connected to the pressure plate 3, and the inner guide post assembly 20. The side push block 4 is fixed to the upper die seat 2 by screws and the positioning key block 19 and moves down as a whole. During the downward movement, the pressure plate 3 first contacts the workpiece 1 and firmly presses it down. At the same time, as the side push block 4 just contacts the slider 7, the forced reset hook 22 is precisely inserted into the guide groove of the slider 7. The punch press continues to move down, and the second nitrogen spring 21 is compressed accordingly. The side push block 4 applies a horizontal thrust to the slider 7 through the guide groove. The pusher 7 drives the fixed plate 8, punch 10, and stripper plate 9 to slide 32mm along the guide rail 13 toward the workpiece 1 until the stripper plate 9 is in contact with the side of the workpiece 1 and assists in holding it in place. Then the punch press continues to descend, and the second nitrogen spring 21 is further compressed by 8mm, which is the second stage of the stroke. The side pusher block 4 pushes the slide 7 to move forward 8mm along the guide rail 13. At this time, the stripper plate 9 compresses the rectangular spring 118mm under the reaction force of the workpiece 1, and the punch 10 simultaneously punches into the workpiece 1 by 8mm, completing the punching operation. The generated waste material is discharged along the discharge hole 23. After the punching is completed, the punch press drives the upper die base 2 and the pressure plate 3 to move upward. The slide 7 moves upward 8mm with the side pusher block 4 under the reaction force of the side pusher block 4. Simultaneously retracting 8mm, the rectangular spring 11 returns to the mold-opening state, and the forced reset hook 22 disengages from the slider 7. After the upper mold is completely disengaged from the lower mold, the first nitrogen spring 16 in the lower mold releases its elastic force, pushing the slider 7, the fixing plate 8, the punch 10, and the stripper plate 9 to retract 32mm to the initial position. Finally, the processed part 1 is taken out, thus completing one complete side punching operation.

Claims

1. A side punch structure for a stamping die, comprising an upper die base (2), a pressure plate (3), a side push block (4), a lower die fixing base (5), a lower die base (6), a slider (7), a fixing plate (8), a stripper plate (9), a punch (10), a rectangular spring (11), a guide rail (13), a base (15), a first nitrogen spring (16), a nitrogen spring limiting block (17), a positioning key block (19), an inner guide post assembly (20), a second nitrogen spring (21), and a forced reset hook (22), characterized in that: The pressure plate (3) is connected to the second nitrogen spring (21) through the inner guide post assembly (20). The side push block (4) is inverted on the upper mold base (2) and is fixed to the upper mold base (2) by screws and positioning key block (19). The side push block (4) is fitted with a forced reset hook (22). The lower mold fixing seat (5) is fixed to the lower mold base (6) by screws and positioning key block (19). The base (15) is set on the lower mold fixing seat (5). The slider (7) is placed on the base (15) and is connected to the base through the guide rail (13). The base (15) is slidably fitted. The slider (7) and the fixed plate (8) are connected by screws and pins. The unloading plate (9) and the fixed plate (8) are connected by equal-height screws (12). The punch (10) and the rectangular spring (11) are both located between the fixed plate (8) and the unloading plate (9). A wear-resistant block (14) is provided below the slider (7). The first nitrogen spring (16) is fixed inside the base (15). The nitrogen spring limiting block (17) is fixed on the bottom surface of the slider (7), and the nitrogen spring limiting block (17) is correspondingly set with the first nitrogen spring (16).

2. The side punch structure of a stamping die according to claim 1, characterized in that: The base (15) is provided with a hook guide (18), which is correspondingly provided with the slider (7).

3. The side punch structure of a stamping die according to claim 1, characterized in that: The lower die fixing seat (5) is provided with a material discharge hole (23), which is correspondingly set with the punch (10).

4. The side punch structure of a stamping die according to claim 1, characterized in that: The rectangular spring (11) is sleeved on the outside of the equal height screw (12), and the two ends of the rectangular spring (11) abut against the fixing plate (8) and the unloading plate (9) respectively.

5. The side punch structure of a stamping die according to claim 1, characterized in that: The wear-resistant block (14) is made of high-hardness wear-resistant material and is fixed to the base (15) by screws. The upper surface of the wear-resistant block (14) is in contact with the lower surface of the slider (7).

6. The side punch structure of a stamping die according to claim 1, characterized in that: The inner guide post assembly (20) includes an inner guide post and an inner guide sleeve. The inner guide post is fixed on the upper mold base (2), and the inner guide sleeve is fixed on the pressure plate (3).

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