Probe tip swage centering retention device

Abstract

The application provides a probe tip stamping forming centering holding device, belonging to the probe production field; comprising an upper die holder and a lower die holder, the upper die holder and the lower die holder are movably connected, a lower die plate is installed on the lower die holder, a fixed plate is fixedly connected on the upper die holder, a bottom groove is formed on the bottom surface of the fixed plate, a plurality of punch pins are fixedly installed on the fixed plate in a uniform distribution, and a movable plate is arranged in the bottom groove. The front and rear fine adjustment assembly and the left and right fine adjustment assembly are arranged, the positioning plate in the positioning hole can adjust the left and right positions of the punch pin through the rotation adjustment of the worm, the left and right position fine adjustment operation of the punch pin is realized, the positioning plate in the positioning hole can adjust the front and rear positions of the punch pin through the rotation adjustment of the second threaded rod, the front and rear position fine adjustment operation of the punch pin is realized, the concentricity of the punch pin can be adjusted, and the forming precision and the service life of the die are improved.

Description

Technical Field

[0001] This invention relates to the field of probe manufacturing technology, and in particular to a probe tip stamping and centering device. Background Technology

[0002] In the production of high-precision miniature probes such as semiconductor test probes and spring contact probes, the stamping and forming of the probe tip is a core process that determines the probe's electrical contact performance and service life. This process typically utilizes an upper die to drive a slender punch downwards at high speed, which engages with the forming cavity of a lower die to cause plastic deformation of the wire end, forming a tip with specific taper or roundness requirements. The concentricity of the punch axis and the lower die cavity axis directly determines the symmetry of the formed tip shape, the coaxiality of the tip, and the surface integrity.

[0003] However, in actual continuous stamping processes, due to the assembly clearance of the upper die's moving slider, the slight elastic bending caused by the large length-to-diameter ratio of the punch, the uneven lateral force during stamping, and the lateral vibration excited by high-speed impact, the actual movement trajectory of the punch is prone to deviating from the ideal centerline, resulting in eccentric impact. This eccentricity not only causes forming accuracy defects such as burrs, skewing, and dimensional dispersion at the punch tip, but also leads to abnormal hard collisions and uneven wear between the punch tip and the lower die cavity, exacerbating punch breakage and lower die failure, and significantly reducing the overall lifespan of the die. Furthermore, during high-speed reciprocating stamping operations, the punch is susceptible to the impact force of stamping and equipment vibration, resulting in trajectory wobbling. Conventional stamping forming devices in the industry generally adopt a rigid mating fit, relying entirely on the rigidity of the die itself to resist stamping impact, without a buffer and vibration absorption structure, which easily causes damage to the die and punch. Based on the above reasons, this invention proposes a probe tip stamping forming centering and holding device to solve the above-mentioned problems existing in the prior art. Summary of the Invention

[0004] This invention proposes a probe tip stamping centering and holding device, which has the advantages of enabling fine-tuning of the punch and elastic buffering.

[0005] The technical solution of the present invention is implemented as follows: a probe tip stamping forming centering and holding device includes an upper mold base and a lower mold base, which are movably connected. A lower template is installed on the lower mold base, and a fixed plate is fixedly connected to the upper mold base. A bottom groove is opened on the bottom surface of the fixed plate, and a plurality of punches are evenly distributed and fixedly installed in the fixed plate. A movable plate is provided in the bottom groove, and movable slots are opened on the front and rear sides of the movable plate. A connecting plate is movably connected in each movable slot. A positioning hole matching the punch is opened on the movable plate. A left and right fine adjustment component is provided on the connecting plate, and a movable block is movably connected to the connecting plate. A front and rear fine adjustment component is provided on the movable block. A plurality of positioning plates are provided in each positioning hole, and an elastic buffer component is provided on each positioning plate.

[0006] Preferably, the left and right fine-tuning component includes a first threaded rod, which is disposed in the movable groove and is threadedly connected to the connecting plate. The same end of the first threaded rods on both sides passes through the side wall of the movable plate and is fixedly connected to a turbine. The two turbines are meshed with the same worm gear, and a fixed shell is movably connected to the worm gear. The fixed shell is fixedly connected to the side wall of the movable plate.

[0007] Preferably, the front and rear fine-tuning component includes a connecting rod, which is L-shaped and movably connected to the movable plate. A threaded sleeve is fixedly connected to the end of the connecting rod away from the movable block. The same second threaded rod is internally threaded to two threaded sleeves on the same cross section. The second threaded rod passes through the front and rear side walls of the movable plate and is movably connected to the movable plate.

[0008] Preferably, the elastic buffer assembly includes a circular groove, a plurality of which are evenly distributed on the side wall of the positioning hole, and a copper tube is fixedly connected to the inner wall of each circular groove. A permanent magnet is installed inside each copper tube, and a fixing rod is fixedly connected to the permanent magnet. The other end of the fixing rod is fixedly connected to the positioning plate, and a first spring is sleeved on the fixing rod. The two ends of the first spring are fixedly connected to the inner wall of the circular groove and the permanent magnet, respectively.

[0009] Preferably, a vertical groove is provided on the side wall of the connecting plate, the movable block is movably connected to the vertical groove, and a vertical rod is movably connected to the movable block. The two ends of the vertical rod are fixedly connected to the upper and lower side walls of the vertical groove, and a second spring is sleeved on the vertical rod. The two ends of the second spring are fixedly connected to the movable block and the bottom surface of the vertical groove, respectively.

[0010] Preferably, grooves are provided at both ends of the second threaded rod and the worm, and the grooves are arranged in a regular hexagonal shape.

[0011] Preferably, the positioning plate is arc-shaped, and wear-resistant pads are fixedly connected to the inner wall of the positioning plate.

[0012] Preferably, guide sleeves are fixedly connected to the four corners of the upper mold base, and guide rods are movably connected inside the guide sleeves. The guide rods are fixedly connected to the lower mold base, and a third spring is fixedly connected to each guide rod. The two ends of the third spring are fixedly connected to the guide sleeve and the lower mold base, respectively.

[0013] Preferably, the top surface of the movable plate has several heat dissipation grooves, and the side wall of the bottom groove has several heat dissipation holes.

[0014] Preferably, a tightening bolt is threaded onto the side wall of the threaded sleeve, and one end of the tightening bolt is pressed against the outer wall of the second threaded rod.

[0015] By adopting the above technical solution, the beneficial effects of the present invention are as follows: 1. This invention, by setting up front-to-back fine-tuning components and left-to-right fine-tuning components, allows the positioning plate in the positioning hole to adjust the left-to-right position of the punch by rotating and adjusting the worm gear, thus realizing fine-tuning of the punch's left-to-right position. Combined with the rotation and adjustment of the second threaded rod, the positioning plate in the positioning hole can adjust the front-to-back position of the punch, thus realizing fine-tuning of the punch's front-to-back position. This enables the adjustment of the punch's concentricity, improving molding accuracy and mold lifespan. 2. This invention incorporates an elastic buffer component. During the stamping process of the probe, the vibration generated is transmitted to the punch, which in turn is transmitted to the positioning plate. The positioning plate moves the fixing rod, which in turn moves the permanent magnet inside the copper tube. The first spring deforms, and through the movement of the permanent magnet inside the copper tube, the energy generated by the vibration is ultimately converted into heat energy. Under the elastic force of the first spring, the positioning plate resets the punch, thereby reducing the vibration of the punch, ensuring the stability of the punch's movement trajectory, and guaranteeing the stamping effect of the probe. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall front structure of the present invention; Figure 2 This is a schematic diagram of the overall side structure of the present invention; Figure 3 This is a schematic diagram of the overall horizontal cross-sectional structure of the present invention; Figure 4 This is a schematic diagram of the upper structure of the fixing plate of the present invention; Figure 5 This is a schematic diagram of the lower structure of the fixing plate of the present invention; Figure 6 This is a schematic diagram of the structure on the connecting plate of the present invention; Figure 7 This is a schematic diagram of the front and rear fine-tuning components of the present invention; Figure 8 This is a schematic diagram of the structure on the movable plate of the present invention; Figure 9 This is a schematic diagram of the internal structure of the movable plate of the present invention; Figure 10 This is a schematic diagram of the internal structure of the elastic buffer component of the present invention.

[0018] in: 1. Upper mold base; 2. Lower mold base; 3. Lower template; 4. Fixing plate; 5. Bottom groove; 6. Punch; 7. Movable plate; 8. Movable groove; 9. Connecting plate; 10. Positioning hole; 11. Left and right fine adjustment assembly; 12. Movable block; 13. Front and rear fine adjustment assembly; 14. Positioning plate; 15. Elastic buffer assembly; 16. First threaded rod; 17. Turbine; 18. Worm gear; 19. Fixing shell; 20. Connecting rod; 21. Threaded sleeve; 22. Second threaded rod; 23. Circular groove; 24. Copper tube; 25. Permanent magnet; 26. Fixing rod; 27. First spring; 28. Second spring; 29. ​​Groove; 30. Wear-resistant pad; 31. Guide sleeve; 32. Guide rod; 33. Third spring; 34. Heat dissipation groove; 35. Heat dissipation hole; 36. Tightening bolt; 37. Vertical rod; 38. Vertical groove. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1-3 As shown, an embodiment of the present invention provides a probe tip stamping forming centering and holding device, including an upper die base 1 and a lower die base 2, which are movably connected. Guide sleeves 31 are fixedly connected to the four corners of the upper die base 1, and guide rods 32 are movably connected inside the guide sleeves 31. The guide rods 32 are fixedly connected to the lower die base 2, and a third spring 33 is fixedly connected to each guide rod 32. The two ends of the third spring 33 are fixedly connected to the guide sleeves 31 and the lower die base 2, respectively. A lower template 3 is installed on the lower die base 2.

[0021] In the technical solution of this embodiment, during the stamping and forming operation of the probe tip, the upper mold base 1 is driven to move by the external drive structure, so that the upper mold base 1 moves to the side of the lower mold base 2. At this time, the guide sleeve 31 moves on the guide rod 32, and the guide sleeve 31 compresses the third spring 33. When the upper punch 6 of the upper mold base 1 is inserted into the cavity on the lower mold plate 3, the stamping and forming operation of the probe tip is completed. Then, under the elastic force of the third spring 33 and the action of the external drive structure, the upper mold base 1 can be reset. This process is repeated to complete the stamping and production operation of the probe.

[0022] like Figure 1-5As shown, a fixed plate 4 is fixedly connected to the upper mold base 1. A bottom groove 5 is provided on the bottom surface of the fixed plate 4, and several punches 6 are evenly distributed and fixedly installed in the fixed plate 4. A movable plate 7 is provided in the bottom groove 5. Movable grooves 8 are provided on the front and rear sides of the movable plate 7. A connecting plate 9 is movably connected in the movable groove 8, and a movable block 12 is movably connected on the connecting plate 9. A vertical groove 38 is provided on the side wall of the connecting plate 9. The movable block 12 is movably connected to the vertical groove 38, and a vertical rod 37 is movably connected on the movable block 12. The two ends of the vertical rod 37 are fixedly connected to the upper and lower side walls of the vertical groove 38, and a second spring 28 is sleeved on the vertical rod 37. The two ends of the second spring 28 are fixedly connected to the movable block 12 and the bottom surface of the vertical groove 38, respectively.

[0023] In the technical solution of this embodiment, when the upper mold base 1 drives the fixed plate 4 to move to the side of the lower mold base 2, the movable plate 7 first contacts the top surface of the lower template 3. As the upper mold base 1 continues to move, the movable plate 7 will continuously move into the bottom groove 5, the movable block 12 moves in the vertical groove 38, the second spring 28 deforms, and the punch 6 moves out from the positioning hole 10 and continuously inserts into the cavity of the lower template 3. When the top surface of the movable plate 7 contacts the top surface of the inner cavity of the bottom groove 5, the punch 6 completes the entire stamping stroke and realizes the stamping and forming operation of the probe tip. Then the upper mold base 1 resets and completes one production cycle.

[0024] like Figure 4-6 As shown, the movable plate 7 has a positioning hole 10 that matches the punch 6, and the connecting plate 9 has a left and right fine adjustment component 11. The left and right fine adjustment component 11 includes a first threaded rod 16, which is disposed in the movable groove 8 and is threadedly connected to the connecting plate 9. The same end of the first threaded rods 16 on both sides passes through the side wall of the movable plate 7 and is fixedly connected to a turbine 17. The two turbines 17 are meshed with the same worm gear 18, and a fixed shell 19 is movably connected to the worm gear 18. The fixed shell 19 is fixedly connected to the side wall of the movable plate 7.

[0025] In the technical solution of this embodiment, the worm gear 18 is rotated by a tool, the worm gear 18 meshes with the turbine 17 and rotates, the turbine 17 drives the first threaded rod 16 to rotate, the first threaded rod 16 meshes with the connecting plate 9 and moves, so that the connecting plate 9 moves in the movable groove 8 on the movable plate 7, changing the left and right position of the movable plate 7. The movement of the movable plate 7 can make the positioning plate 14 in the positioning hole 10 adjust the left and right position of the punch 6, realizing the fine adjustment operation of the left and right position of the punch 6.

[0026] like Figure 5-7As shown, the movable block 12 is provided with a front-to-back fine adjustment component 13. The front-to-back fine adjustment component 13 includes a connecting rod 20. The connecting rod 20 is L-shaped and is movably connected to the movable plate 7. A threaded sleeve 21 is fixedly connected to the end of the connecting rod 20 away from the movable block 12. The same second threaded rod 22 is internally threaded on two threaded sleeves 21 on the same cross section. The second threaded rod 22 passes through the front and rear side walls of the movable plate 7 and is movably connected to the movable plate 7.

[0027] In the technical solution of this embodiment, by synchronously rotating the two second threaded rods 22, the second threaded rods 22 engage with the threaded sleeve 21 to move, the threaded sleeve 21 drives the connecting rod 20 to move, the connecting rod 20 drives the movable block 12 to move, the movable block 12 drives the connecting plate 9 to move, and the connecting plate 9 drives the movable plate 7 to move. The movement of the movable plate 7 can enable the positioning plate 14 in the positioning hole 10 to adjust the front and back position of the punch 6, thereby realizing the fine adjustment operation of the front and back position of the punch 6. Combined with the above-mentioned fine adjustment of the left and right position, the concentricity adjustment operation of the punch can be realized.

[0028] like Figure 7 As shown, a tightening bolt 36 is threadedly connected to the side wall of the threaded sleeve 21. One end of the tightening bolt 36 is pressed against the outer wall of the second threaded rod 22. By tightening the tightening bolt 36, the threaded sleeve 21 and the second threaded rod 22 can be locked together, reducing the loosening between the threaded sleeve 21 and the second threaded rod 22 caused by vibration.

[0029] like Figure 3 and 8 As shown in -10, each positioning hole 10 is provided with several positioning plates 14, and each positioning plate 14 is provided with an elastic buffer assembly 15. The elastic buffer assembly 15 includes a circular groove 23. Several circular grooves 23 are evenly distributed on the side wall of the positioning hole 10, and copper tubes 24 are fixedly connected to the inner wall of each circular groove 23. Permanent magnets 25 are provided inside each copper tube 24. A fixing rod 26 is fixedly connected to the permanent magnet 25. The other end of the fixing rod 26 is fixedly connected to the positioning plate 14, and a first spring 27 is sleeved on the fixing rod 26. The two ends of the first spring 27 are fixedly connected to the inner wall of the circular groove 23 and the permanent magnet 25, respectively.

[0030] In the technical solution of this embodiment, during the stamping process of the probe, the vibration generated during the high-speed movement of the upper mold base 1 and its structure is transmitted to the punch 6. The vibration of the punch 6 is then transmitted to the positioning plate 14. The positioning plate 14 drives the fixed rod 26 to move, and the fixed rod 26 drives the permanent magnet 25 to move inside the copper tube 24. The first spring 27 deforms. Through the movement of the permanent magnet 25 inside the copper tube 24, the energy generated by the vibration can be finally converted into heat energy. Under the elastic force of the first spring 27, the positioning plate 14 resets the punch 6, thereby reducing the vibration of the punch 6, ensuring the stability of the movement trajectory of the punch 6, and ensuring the stamping effect of the probe.

[0031] like Figure 7 and 8 As shown, the second threaded rod 22 and the worm gear 18 are provided with grooves 29 at both ends. The grooves 29 are hexagonal and can be adjusted by inserting a specified tool into the grooves 29.

[0032] like Figure 10 As shown, the positioning plate 14 is further arranged in an arc shape, and wear-resistant pads 30 are fixedly connected to the inner wall of the positioning plate 14 to reduce the wear between the positioning plate 14 and the punch 6 and improve the service life of the punch 6.

[0033] like Figure 8 As shown, the top surface of the movable plate 7 is provided with several heat dissipation grooves 34, and the side wall of the bottom groove 5 is provided with several heat dissipation holes 35. The kinetic energy of the vibration is eventually converted into heat energy and transferred to the movable plate 7, causing the temperature on the movable plate 7 to rise. The heat dissipation grooves 34 can increase the heat dissipation area of ​​the movable plate 7, and the heat dissipation holes 35 can accelerate the spread of heat to the outside and improve the heat dissipation effect.

[0034] Working principle: During use, the concentricity of the punch 6 and the upper cavity of the lower template 3 is monitored using specialized equipment. Then, the operator inserts a designated tool into the groove 29 at one end of the worm gear 18 and rotates the worm gear 18. The worm gear 18 meshes with the turbine 17, which rotates, driving the first threaded rod 16 to rotate. The first threaded rod 16 meshes with the connecting plate 9, causing the connecting plate 9 to move within the movable groove 8 on the movable plate 7, changing the left and right position of the movable plate 7. The movement of the movable plate 7 allows the positioning plate 14 in the positioning hole 10 to adjust the left and right position of the punch 6, changing the left and right position of the punch 6 to the designated position. Then, by inserting a tool into the groove 29 of the two second threaded rods 22 and simultaneously rotating the two second threaded rods 22 synchronously, the second threaded rods 22 mesh with the threaded sleeve 21, which drives the connecting rod 20 to move. The connecting rod 20 drives the movable block 12 to move. The connecting plate 9 moves, which in turn moves the movable plate 7. The movement of the movable plate 7 allows the positioning plate 14 within the positioning hole 10 to adjust the position of the punch 6, changing its position to a specified location. This enables fine-tuning of the punch 6's alignment. During the stamping process of the probe, the vibration generated by the high-speed movement of the upper mold base 1 and its structure is transmitted to the punch 6. The vibration of the punch 6 is then transmitted to the positioning plate 14, which in turn moves the fixing rod 26. The fixing rod 26 moves the permanent magnet 25 within the copper tube 24, and the first spring 27 deforms. Through the movement of the permanent magnet 25 within the copper tube 24, the energy generated by the vibration is ultimately converted into heat energy. Under the elastic force of the first spring 27, the positioning plate 14 resets the punch 6, thereby reducing the vibration of the punch 6, ensuring the stability of the punch 6's movement trajectory, and guaranteeing the stamping effect of the probe.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A probe tip stamping and centering holding device, comprising an upper die base (1) and a lower die base (2), characterized in that, The upper mold base (1) and the lower mold base (2) are movably connected. The lower mold base (2) is equipped with a lower template (3). The upper mold base (1) is fixedly connected with a fixing plate (4). The bottom surface of the fixing plate (4) is provided with a bottom groove (5). Several punches (6) are evenly distributed and fixedly installed in the fixing plate (4). A movable plate (7) is provided in the bottom groove (5). Movable slots (8) are provided on the front and rear sides of the movable plate (7). A connecting plate (9) is movably connected in the movable slots (8). A positioning hole (10) matching the punches (6) is provided on the movable plate (7). A left and right fine adjustment component (11) is provided on the connecting plate (9). A movable block (12) is movably connected on the connecting plate (9). A front and rear fine adjustment component (13) is provided on the movable block (12). Several positioning plates (14) are provided in each positioning hole (10). An elastic buffer component (15) is provided on each positioning plate (14).

2. The probe tip stamping and centering holding device according to claim 1, characterized in that, The left and right fine adjustment component (11) includes a first threaded rod (16), which is disposed in the movable groove (8) and threadedly connected to the connecting plate (9). The same end of the first threaded rod (16) on both sides passes through the side wall of the movable plate (7) and is fixedly connected to a turbine (17). The same worm gear (18) meshes on the two turbines (17). A fixed shell (19) is movably connected to the worm gear (18), and the fixed shell (19) is fixedly connected to the side wall of the movable plate (7).

3. The probe tip stamping and centering holding device according to claim 2, characterized in that, The front and rear fine adjustment component (13) includes a connecting rod (20), which is L-shaped and is movably connected to the movable plate (7). A threaded sleeve (21) is fixedly connected to one end of the connecting rod (20) away from the movable block (12). The two threaded sleeves (21) on the same cross section are internally threaded to the same second threaded rod (22). The second threaded rod (22) passes through the front and rear side walls of the movable plate (7) and is movably connected to the movable plate (7).

4. The probe tip stamping and centering holding device according to claim 3, characterized in that, The elastic buffer assembly (15) includes a circular groove (23). Several circular grooves (23) are evenly distributed on the side wall of the positioning hole (10). Copper tubes (24) are fixedly connected to the inner wall of each circular groove (23). A permanent magnet (25) is provided inside each copper tube (24). A fixing rod (26) is fixedly connected to the permanent magnet (25). The other end of the fixing rod (26) is fixedly connected to the positioning plate (14). A first spring (27) is sleeved on the fixing rod (26). The two ends of the first spring (27) are fixedly connected to the inner wall of the circular groove (23) and the permanent magnet (25) respectively.

5. The probe tip stamping and centering holding device according to claim 4, characterized in that, The connecting plate (9) has a vertical groove (38) on its side wall. The movable block (12) is movably connected to the vertical groove (38), and a vertical rod (37) is movably connected to the movable block (12). The two ends of the vertical rod (37) are fixedly connected to the upper and lower side walls of the vertical groove (38), and a second spring (28) is sleeved on the vertical rod (37). The two ends of the second spring (28) are fixedly connected to the bottom surface of the movable block (12) and the vertical groove (38) respectively.

6. The probe tip stamping and centering holding device according to claim 5, characterized in that, The second threaded rod (22) and the worm (18) are provided with grooves (29) at both ends, and the grooves (29) are hexagonal.

7. The probe tip stamping and centering holding device according to claim 6, characterized in that, The positioning plate (14) is arc-shaped, and wear-resistant pads (30) are fixedly connected to the inner wall of the positioning plate (14).

8. The probe tip stamping and centering holding device according to claim 7, characterized in that, The upper mold base (1) is fixedly connected to guide sleeves (31) near the four corners. Guide rods (32) are movably connected inside the guide sleeves (31). The guide rods (32) are fixedly connected to the lower mold base (2), and a third spring (33) is fixedly connected to each guide rod (32). The two ends of the third spring (33) are fixedly connected to the guide sleeves (31) and the lower mold base (2) respectively.

9. A probe tip stamping and centering holding device according to claim 8, characterized in that, The top surface of the movable plate (7) is provided with a number of heat dissipation grooves (34), and the side wall of the bottom groove (5) is provided with a number of heat dissipation holes (35).

10. A probe tip stamping and centering holding device according to claim 9, characterized in that, A tightening bolt (36) is threaded onto the side wall of the threaded sleeve (21), and one end of the tightening bolt (36) is pressed against the outer wall of the second threaded rod (22).

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