PIN punch forming device

Abstract

The utility model discloses a PIN punch forming device which comprises a base, a hydraulic cylinder is installed on the top of the base, the output end of the hydraulic cylinder is connected with an upper die assembly, a lower die assembly is arranged at the upper end of a table top of the base, a supporting plate is installed in an inner cavity of the base, a die exchange mechanism is installed at the upper end of the supporting plate, and a pin is installed on the die exchange mechanism. Compared with the prior art, the upper die assembly is reasonable in structural design and high in practicability, the upper die body can be conveniently and rapidly mounted, dismounted and replaced, different upper die bodies can be conveniently replaced, the upper die assembly can be conveniently replaced, the cost is reduced, and the production efficiency is improved. The positions of the multiple lower die bodies are rotated and switched, then the positions of the multiple lower die bodies are fixed, die replacement is effectively and rapidly completed, stamping operation on PINs of different sizes is facilitated, and the using effect is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PIN pin stamping, in particular to a PIN pin stamping and forming device. Background Art

[0002] A PIN pin is a metal material used in a connector to complete the conduction (transmission) of electricity (signals). Usually, in order to ensure the durability of the PIN pin, tungsten carbide is often used as the material to make the PIN pin when producing the PIN pin. The PIN pin stamping device is a device that produces PIN pins by stamping.

[0003] According to a fast - forming PIN pin stamping device disclosed in the patent publication number CN221388493U, which includes a frame, the inner wall of the frame is provided with a stamping structure, the surface of the frame is detachably installed with a lower die, one end of the stamping structure close to the lower die is detachably installed with an upper die, the surface of the frame is provided with a replacement device, the replacement device includes two first sliding strips, two first sliding grooves are opened on the inner wall of the frame, and both of the two first sliding strips are slidably connected to the surface of the first sliding grooves on the frame. One end of the stamping structure close to the lower die is fixedly connected with a mounting plate, and two second sliding grooves are opened on the inner wall of the mounting plate, and both of the two second sliding strips are slidably connected to the surface of the second sliding grooves on the mounting plate.

[0004] Although the above - mentioned patent can replace the upper die and the lower die of the PIN pin stamping device through the setting of the replacement device, so that the PIN pin stamping device can stamp and process PIN pins of different sizes, improving the flexibility of the use of the PIN pin stamping device. However, when it is necessary to stamp PIN pins of different sizes, it still needs to install and disassemble the upper die by screwing and removing the screw rod 59, and the lower die also needs to be disassembled and replaced, and its operation is relatively troublesome. For this reason, we provide a PIN pin stamping and forming device to solve this problem. Summary of the Utility Model

[0005] The utility model aims to provide a technical solution of a PIN pin stamping and forming device that can solve the above problems to overcome the above - mentioned situations.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A PIN pin stamping and forming device includes a base, a hydraulic cylinder is installed on the top of the base, the output end of the hydraulic cylinder is connected with an upper die assembly, the upper end of the table surface of the base is provided with a lower die assembly, a support plate is installed in the inner cavity of the base, a die replacement mechanism is installed on the upper end of the support plate, the upper end of the die replacement mechanism penetrates through the base and is connected with the lower die assembly, and an operation door is movably installed on the outside of the base;

[0007] The lower mold assembly includes a support disk arranged at the upper end of the base tabletop. Four groups of mounting grooves are equidistantly arranged at the upper end of the support disk. Both sides of the inner cavity of the mounting groove are connected with second limiting strips. A lower mold body is jointly inserted outside every two of the second limiting strips. The lower mold body is screwed with the second limiting strips. A limiting notch corresponding to the position of the mounting groove is arranged at the upper end of the support disk;

[0008] The mold replacement mechanism includes a rotating assembly and a limiting assembly mounted on the upper end of the support plate. The upper end of the rotating assembly is screwed with the support disk. The limiting assembly is in transmission connection with the rotating assembly. Through grooves are symmetrically arranged at the upper end of the base tabletop. The upper end of the limiting assembly passes through the through groove and is inserted into the limiting notch.

[0009] As a further solution of the present utility model: The upper mold assembly includes a support seat mounted at the lower end of the output end of the hydraulic cylinder. First limiting strips are symmetrically connected inside the support seat. An upper mold body is jointly slidably connected outside the first limiting strips. Mounting holes are symmetrically arranged at the top inside the support seat. A spring rod is mounted at the top of the inner cavity of the mounting hole. The lower ends of the spring rods are jointly connected with a stop block. One side of the stop block is in contact with the outside of the upper mold body.

[0010] As a further solution of the present utility model: Sliding grooves are symmetrically arranged inside the support seat. Sliding blocks slidably connected therewith are connected to both sides of the stop block.

[0011] As a further solution of the present utility model: The rotating assembly includes a servo motor and a first bearing seat mounted on the upper end of the support plate. A support shaft is rotatably connected inside the inner cavity of the first bearing seat. The upper end of the support shaft penetrates through the base and is screwed with the support disk. A first gear is mounted on the outside of the support shaft. The output end of the servo motor is connected with a fixed disk. An arc-shaped rack is integrally connected to the outside of the fixed disk. The fixed disk corresponds to the position of the first gear. The top end inside the base is rotatably connected with a fixed shaft through a second bearing seat. A second gear meshing with the arc-shaped rack is mounted on the outside of the fixed shaft. A first bevel gear is mounted on the outside of the fixed shaft. Mounting seats are symmetrically mounted inside the base cavity. A transmission shaft is rotatably connected between the mounting seats. A second bevel gear meshing with the first bevel gear is mounted on the outside of the transmission shaft. First belt pulleys are symmetrically mounted on the outside of the transmission shaft. Belts are sleeved on the outside of the first belt pulleys. The belts are all movably sleeved with the limiting assembly.

[0012] As a further solution of the utility model: The limiting component includes two second pulleys sleeved on two belts. The inner cavities of the second pulleys are both connected with rotating shafts. The upper end of the support plate is symmetrically connected with fixing seats rotatably connected with the rotating shafts. One end of the rotating shaft is connected with a rotating rod. One side of the rotating rod is connected with a fixing column. The two sides of the upper end of the support plate are symmetrically connected with limiting frames. T-shaped blocks are slidably connected in the inner cavities of the limiting frames. A fixing block is commonly connected between the T-shaped blocks. A fixing frame is screwed on one side of the fixing block. The fixing column is movably sleeved in the inner cavity of the fixing frame. The upper end of the fixing block is connected with a limiting plate opposite to the position of the limiting notch.

[0013] As a further solution of the utility model: Both sides of the limiting plate are connected with blocking strips. The four sides of the lower end of the support disc are symmetrically provided with blocking grooves matching the positions of the limiting notches.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. By squeezing the blocking block upward, the blocking block moves upward and compresses the spring rod. Then the blocking block moves away from the upper die body. Then, by manually pushing out the upper die body, the two sides of the new upper die body are inserted into the first limiting strips and stably pushed into the inner side of the support seat. Then the compressed spring rod releases the rebound force, driving the blocking block to move downward to limit and block one side of the upper die body, which is convenient for the stable detachable installation and use of the upper die body.

[0016] 2. After replacing different upper die bodies, the rotating component of the die replacement mechanism drives the support disc to rotate. Then the multiple lower die bodies above the support disc rotate and change positions. Thus, one lower die body corresponding to the new upper die body rotates until it corresponds to the position of the new upper die body. At the same time, the rotating component drives the limiting component to operate. The limiting plate of the limiting component passes through the through groove and inserts into the two limiting notches at the upper end of the support disc. The blocking strips on both sides of the limiting plate insert into the blocking grooves at the lower end of the support disc, which is convenient for effectively improving the effect of limiting and fixing the support disc, and is convenient for completing the replacement of the stamping die, convenient to operate, avoiding the trouble of disassembly and replacement, and effectively improving the replacement efficiency of the stamping die and convenient for use. Description of the Drawings

[0017] Figure 1 is the overall three-dimensional structure schematic diagram of the utility model;

[0018] Figure 2 is the overall three-dimensional unfolded structure schematic diagram of the utility model;

[0019] Figure 3 is the partial three-dimensional structure schematic diagram of the utility model;

[0020] Figure 4 It is a schematic perspective exploded view from the bottom of the upper mold assembly of the present utility model;

[0021] Figure 5 It is a schematic perspective view of the lower mold assembly of the present utility model;

[0022] Figure 6 It is a schematic perspective view from the bottom of the lower mold assembly of the present utility model;

[0023] Figure 7 It is a schematic perspective view of a part of the present utility model;

[0024] Figure 8 It is a schematic perspective view of a part of the mold replacement mechanism of the present utility model.

[0025] Figure 9 It is a schematic perspective view of the limit component of the present utility model.

[0026] The reference numerals and names in the figure are as follows:

[0027] Base - 1, hydraulic cylinder - 2, upper mold assembly - 3, support seat - 31, first limit bar - 32, upper mold body - 33, mounting hole - 34, spring rod - 35, stop block - 36, slider - 37, chute - 38, lower mold assembly - 4, support plate - 41, mounting groove - 42, second limit bar - 43, lower mold body - 44, limit notch - 45, retaining groove - 46, operation door - 5, support plate - 6, mold replacement mechanism - 7, rotating assembly - 71, servo motor - 711, fixed disk - 712, arc rack - 713, first bearing seat - 714, support shaft - 715, first gear - 716, second bearing seat - 717, fixed shaft - 718, second gear - 719, first bevel gear - 7110, mounting seat - 7111, transmission shaft - 7112, first pulley - 7113, second bevel gear - 7114, belt - 7115, limit component - 72, fixed seat - 721, rotating shaft - 722, second pulley - 723, rotating rod - 724, fixed column - 725, limit frame - 726, T - shaped block - 727, fixed block - 728, fixed frame - 729, limit plate - 7210, retaining bar - 7211, through - slot - 8. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figures 1-9 , a PIN needle stamping and forming device, including a base 1. A hydraulic cylinder 2 is installed on the top of the base 1. The output end of the hydraulic cylinder 2 is connected to an upper die assembly 3. The upper die assembly 3 includes a support seat 31 installed at the lower end of the output end of the hydraulic cylinder 2. First limit strips 32 are symmetrically connected to the inner side of the support seat 31. An upper die body 33 is slidably connected to the outside of the first limit strips 32. Mounting holes 34 are symmetrically arranged at the top of the inner side of the support seat 31. A spring rod 35 is installed at the top of the inner cavity of the mounting hole 34. The lower ends of the spring rods 35 are jointly connected to a stop block 36. One side of the stop block 36 is in contact with the outside of the upper die body 33. Chute grooves 38 are symmetrically arranged on the inner side of the support seat 31. Sliding blocks 37 are connected to both sides of the stop block 36 and are slidably connected thereto.

[0030] By squeezing the stop block 36 upward, the stop block 36 is stably slid upward and limited in the inner cavity of the chute groove 38 through the sliding block 37. At the same time, the stop block moves upward and compresses the spring rod 35. Then, the stop block 36 moves away from the upper die body 33. Then, the upper die body 33 is manually pushed out. The upper die body 33 stably moves outward until it moves out of the inner side of the support seat 31 under the limiting condition of the first limit strip 32, so as to facilitate the replacement of the upper die body 33 with different die core sizes. The two sides of the new upper die body 33 are inserted into the first limit strips 32 and stably pushed into the inner side of the support seat 31. Then, the compressed spring rod 35 releases the rebounding force, driving the stop block 36 to move downward to limit and block one side of the upper die body 33, facilitating the stable detachable installation and use of the upper die body 33.

[0031] A lower die assembly 4 is arranged at the upper end of the tabletop of the base 1. The lower die assembly 4 includes a support plate 41 arranged at the upper end of the tabletop of the base 1. Four groups of installation grooves 42 are equidistantly arranged at the upper end of the support plate 41. Second limit strips 43 are connected to both sides of the inner cavity of the installation groove 42. A lower die body 44 is inserted into the outside of the second limit strips 43 on both sides of each two second limit strips 43. The lower die body 44 is screwed to the second limit strip 43. A limit notch 45 corresponding to the position of the installation groove 42 is arranged at the upper end of the support plate 41.

[0032] By inserting the two sides of multiple lower die bodies 44 into the outside of the second limit strips 43 on both sides of the inner cavity of multiple installation grooves 42 respectively until they are completely pushed into the inner cavity of the installation groove 42, and then screwing and fixing the lower die body 44 to the second limit strip 43 through bolts. After replacing different upper die bodies 33, the support plate 41 is driven to rotate by a die changing mechanism 7, so that multiple lower die bodies 44 above the support plate 41 rotate and change positions, so that one lower die body 44 corresponding to the new upper die body 33 rotates until it corresponds to the position of the new upper die body 33, facilitating the stamping of PIN needles of different sizes, improving the use effect, and improving the efficiency of switching different stamping dies, facilitating use.

[0033] A support plate 6 is installed in the inner cavity of the base 1. A mold replacement mechanism 7 is installed at the upper end of the support plate 6. The upper end of the mold replacement mechanism 7 penetrates through the base 1 and is connected to the lower mold assembly 4. An operation door 5 is movably installed on the outside of the base 1. The mold replacement mechanism 7 includes a rotation assembly 71 and a limit assembly 72 installed at the upper end of the support plate 6. The upper end of the rotation assembly 71 is screwed to the support plate 41. The limit assembly 72 is drivingly connected to the rotation assembly 71. Through grooves 8 are symmetrically arranged at the upper end of the tabletop of the base 1. The upper end of the limit assembly 72 passes through the through grooves 8 and is inserted into the limit notch 45.

[0034] The rotation assembly 71 includes a servo motor 711 and a first bearing seat 714 installed at the upper end of the support plate 6. A support shaft 715 is rotatably connected to the inner cavity of the first bearing seat 714. The upper end of the support shaft 715 penetrates through the base 1 and is screwed to the support plate 41. A first gear 716 is installed on the outside of the support shaft 715. The output end of the servo motor 711 is connected to a fixed disk 712. An arc-shaped rack 713 is integrally connected to the outside of the fixed disk 712. The fixed disk 712 corresponds to the position of the first gear 716. The top end of the inner cavity of the base 1 is rotatably connected to a fixed shaft 718 through a second bearing seat 717. A second gear 719 meshing with the arc-shaped rack 713 is installed on the outside of the fixed shaft 718. A first bevel gear 7110 is installed on the outside of the fixed shaft 718. Mounting seats 7111 are symmetrically installed in the inner cavity of the base 1. A transmission shaft 7112 is rotatably connected between the mounting seats 7111. A second bevel gear 7114 meshing with the first bevel gear 7110 is installed on the outside of the transmission shaft 7112. First belt pulleys 7113 are symmetrically installed on the outside of the transmission shaft 7112. Belts 7115 are sleeved on the outside of the first belt pulleys 7113. The belts 7115 are all movably sleeved on the limit assembly 72.

[0035] When different upper die bodies 33 are replaced and different lower die bodies 44 need to be switched to match for stamping, at this time, the limiting plate 7210 of the limiting component 72 passes through the through slot 8 and inserts into the two limiting notches 45 at the upper end of the support disk 41 to limit and fix the support disk 41. The output end of the servo motor 711 drives the fixed disk 712 to rotate, and then the fixed disk 712 drives the arc-shaped rack 713 on its outer side to rotate. The arc-shaped rack 713 drives the second gear 719 to rotate and the fixed shaft 718 in its inner cavity to rotate. The fixed shaft 718 synchronously drives the first bevel gear 7110 to rotate, and the first bevel gear 7110 drives the second bevel gear 7114 meshing with it and the transmission shaft 7112 in its inner cavity to rotate. The transmission shaft 7112 drives the limiting component 72 to rotate through the first pulley 7113 and the belt 7115. The limiting component 72 moves up and down reciprocally, so that the limiting component 72 moves down and leaves the limiting notch 45 and enters the inner cavity of the base 1. Subsequently, the arc-shaped rack 713 rotates to mesh with the first gear 716, and then drives the first gear 716 and the support shaft 715 in its inner cavity to rotate, and drives the lower die assembly 4 at the upper end of the support shaft 715 to rotate 90 degrees as a whole. At this time, the position of the lower die body 44 in the lower die assembly 4 is completely switched once. Subsequently, the arc-shaped rack 713 continues to rotate with the fixed disk 712, and the arc-shaped rack 713 moves to mesh with the second gear 719, thus repeating the above operation, so that the limiting plate 7210 of the limiting component 72 passes through the through slot 8 again and inserts into the two limiting notches 45 at the upper end of the support disk 41 to limit and fix the support disk 41. If at this time, the lower die body 44 corresponding to the position of the upper die body 33 is exactly the same matching die as the upper die body 33, there is no need to continue rotating the lower die assembly 4, and the stamping operation of PIN pins with different sizes can be carried out. If at this time, the lower die body 44 corresponding to the position of the upper die body 33 is not the same matching die as the new upper die body 33, the die replacement mechanism 7 continues to drive the lower die assembly 4 to rotate 90 degrees until a lower die body 44 that is the same matching die as the upper die body 33 at the upper end of the lower die assembly 4 moves below the upper die body 33, which is convenient for completing the replacement of the stamping die, convenient for operation, avoiding the trouble of disassembly and replacement, and effectively improving the replacement efficiency of the stamping die and facilitating use.

[0036] The limiting component 72 includes two second belt pulleys 723 sleeved on two belts 7115. The inner cavities of the second belt pulleys 723 are each connected to a rotating shaft 722. The upper end of the support plate 6 is symmetrically connected with fixing seats 721 rotatably connected to the rotating shafts 722. One end of the rotating shaft 722 is connected to a rotating rod 724. One side of the rotating rod 724 is connected to a fixing column 725. On both sides of the upper end of the support plate 6, limiting frames 726 are symmetrically connected. T-shaped blocks 727 are slidably connected in the inner cavities of the limiting frames 726. A fixing block 728 is commonly connected between the T-shaped blocks 727. A fixing frame 729 is screwed on one side of the fixing block 728. The fixing column 725 is movably sleeved in the inner cavity of the fixing frame 729. The upper end of the fixing block 728 is connected to a limiting plate 7210 opposite to the position of the limiting notch 45. On both sides of the limiting plate 7210, retaining strips 7211 are connected. On the periphery of the lower end of the support disc 41, retaining grooves 46 matching the position of the limiting notch 45 are symmetrically arranged.

[0037] When the rotating component 71 drives the lower die component 4 to rotate 90 degrees, the position switching of the lower die body 44 at the upper end of the lower die component 4 is completed once. Then, the rotating component 71 synchronously drives the second belt pulley 723 to rotate through the first belt pulley 7113 by using the belt 7115. The second belt pulley 723 drives the rotating shaft 722 to rotate. The rotating shaft 722 drives the fixing column 725 to rotate through the rotating rod 724. While rotating, the fixing column 725 drives the fixing frame 729 to move up and down. The fixing frame 729 stably limits and moves in the inner cavity of the limiting frame 726 through the T-shaped block 727. Further, the fixing frame 729 stably drives the limiting plate 7210 and the retaining strips 7211 on both sides thereof to move up and down through the fixing block 728. When the rotating component 71 drives the lower die component 4 to complete a rotation and switching, the rotating component 71 continues to drive the limiting component 72 to rotate. Then, the limiting plate 7210 of the limiting component 72 passes through the through groove 8 and is inserted into the two limiting notches 45 at the upper end of the support disc 41. The retaining strips 7211 on both sides of the limiting plate 7210 are inserted into the retaining grooves 46 at the lower end of the support disc 41, which is convenient for effectively improving the effect of limiting and fixing the support disc 41. When the rotating component 71 needs to drive the lower die component 4 to rotate again, the rotating component 71 first drives the limiting component 72 to rotate, so that the limiting plate 7210 of the limiting component 72 moves down and away from the limiting notch 45, thus facilitating the subsequent rotation of the lower die component 4. It is convenient to stably limit and fix the lower die component 4 through the limiting component 72 after the position switching of the lower die body 44 at the upper end of the lower die component 4 is completed, effectively improving the stability effect of the lower die body 44 during subsequent stamping operations and being convenient for use.

[0038] Working principle: When the utility model is in use, it is controlled and connected to the hydraulic cylinder 2 and the servo motor 711 of the upper die assembly 3 through an external controller. When performing the PIN pin stamping operation, the output end of the hydraulic cylinder 2 drives the upper die assembly 3 to move downward. Then, the upper die body 33 of the upper die assembly 3 stamps the PIN pin raw material at the upper end of the lower die body 44, facilitating the completion of the PIN pin stamping operation. When stamping PIN pins of different sizes is required, the die is replaced. First, the block 36 is squeezed upward. The block 36 slides upward stably and is limited in the inner cavity of the chute 38 through the slider 37. At the same time, the block moves upward and compresses the spring rod 35. Then, the block 36 moves away from the upper die body 33. Then, the upper die body 33 is manually pushed out. The upper die body 33 moves outward stably under the limiting condition of the first limiting strip 32 until it moves out of the inner side of the support seat 31, facilitating the replacement of the upper die body 33 with different die core sizes. The two sides of the new upper die body 33 are inserted into the first limiting strip 32 and stably pushed into the inner side of the support seat 31. Then, the compressed spring rod 35 releases the rebound force, driving the block 36 to move downward to limit and block one side of the upper die body 33, facilitating the stable detachable installation and use of the upper die body 33. Subsequently, different lower die bodies 44 are switched to match the upper die body 33. The output end of the servo motor 711 drives the fixed disk 712 to rotate. Then, the fixed disk 712 drives the arc-shaped rack 713 on its outer side to rotate. The arc-shaped rack 713 drives the second gear 719 and the fixed shaft 718 in its inner cavity to rotate. The fixed shaft 718 synchronously drives the first bevel gear 7110 to rotate. The first bevel gear 7110 drives the second bevel gear 7114 meshing with it and the transmission shaft 7112 in its inner cavity to rotate. The first pulley 7113 on the outer side of the transmission shaft 7112 drives the second pulley 723 to rotate through the belt 7115. The second pulley 723 drives the rotating shaft 722 to rotate. The rotating shaft 722 drives the fixed column 725 to rotate through the rotating rod 724. While rotating, the fixed column 725 drives the fixed frame 729 to move downward. The fixed frame 729 drives the limiting plate 7210 to move downward through the fixed block 728. Subsequently, the arc-shaped rack 713 rotates to mesh with the first gear 716. Then, it drives the first gear 716 and the support shaft 715 in its inner cavity to rotate, and drives the entire lower die assembly 4 at the upper end of the support shaft 715 to rotate 90 degrees. At this time, the position of the lower die body 44 in the lower die assembly 4 is completely switched once. Then, the arc-shaped rack 713 continues to rotate with the fixed disk 712. The arc-shaped rack 713 moves to mesh with the second gear 719, repeating the above operation, so that the limiting plate 7210 of the limiting component 72 passes through the through slot 8 again and is inserted into the two limiting slots 45 at the upper end of the support disk 41 to limit and fix the support disk 41, facilitating the replacement of the stamping die, being convenient for operation, avoiding the trouble of disassembly and replacement, effectively improving the efficiency of replacing the stamping die, and being convenient for use.

[0039] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A PIN pin stamping and forming device, characterized in that: The invention comprises a base (1), a hydraulic cylinder (2) is installed on the top of the base (1), an output end of the hydraulic cylinder (2) is connected to an upper mold assembly (3), a lower mold assembly (4) is arranged on the upper end of the table surface of the base (1), a support plate (6) is installed in the inner cavity of the base (1), a mold exchange mechanism (7) is installed on the upper end of the support plate (6), the upper end of the mold exchange mechanism (7) passes through the base (1) and is connected to the lower mold assembly (4), and an operating door (5) is movably installed on the outer side of the base (1); The lower mold assembly (4) comprises a support plate (41) arranged at the upper end of the table top of the base (1); four groups of mounting grooves (42) are equidistantly arranged at the upper end of the support plate (41); second limiting strips (43) are connected to both sides of the inner cavity of the mounting grooves (42); a lower mold body (44) is commonly inserted into the outer sides of every two second limiting strips (43); the lower mold body (44) is screwed to the second limiting strips (43); and a limiting notch (45) corresponding to the position of the mounting grooves (42) is arranged at the upper end of the support plate (41); The mold exchange mechanism (7) comprises a rotating assembly (71) and a limiting assembly (72) mounted on the upper end of the support plate (6); the upper end of the rotating assembly (71) is screwed to the support plate (41); the limiting assembly (72) is transmission-connected to the rotating assembly (71); through grooves (8) are symmetrically arranged on the upper end of the table surface of the base (1); the upper end of the limiting assembly (72) passes through the through grooves (8) and is plugged into the limiting notch (45).

2. A PIN needle stamping and forming device according to claim 1, characterized in that: The upper mold assembly (3) comprises a support seat (31) mounted at the lower end of the output end of the hydraulic cylinder (2); the inner side of the support seat (31) is symmetrically connected to a first limit bar (32); the outer side of the first limit bar (32) is slidably connected to an upper mold body (33); the inner top of the support seat (31) is symmetrically provided with mounting holes (34); the inner top of the mounting hole (34) is mounted with a spring rod (35); the lower end of the spring rod (35) is commonly connected to a stopper (36); one side of the stopper (36) is in contact with the outer side of the upper mold body (33).

3. A PIN needle stamping and forming device according to claim 2, characterized in that: The inner side of the support seat (31) is symmetrically provided with sliding grooves (38), and both sides of the stopper (36) are connected to sliding blocks (37) that are slidably connected thereto.

4. A PIN needle stamping and forming device according to claim 1, characterized in that: The rotating assembly (71) comprises an upper servo motor (711) mounted on a support plate (6) and a first bearing seat (714); the inner cavity of the first bearing seat (714) is rotatably connected to a support shaft (715); the upper end of the support shaft (715) passes through the base (1) and is threadedly connected to the support plate (41); a first gear (716) is mounted on the outer side of the support shaft (715); the output end of the servo motor (711) is connected to a fixed plate (712); the outer side of the fixed plate (712) is integrally connected to an arc-shaped rack (713); the fixed plate (712) corresponds to the first gear (716) in position; the top end of the inner cavity of the base (1) is rotatably connected to a fixed shaft (718) via a second bearing seat (717). A second gear (719) meshing with the arc-shaped rack (713) is mounted on the outer side of the fixed shaft (718); a first bevel gear (7110) is mounted on the outer side of the fixed shaft (718); mounting seats (7111) are symmetrically mounted in the inner cavity of the base (1); a transmission shaft (7112) is rotatably connected between the mounting seats (7111); a second bevel gear (7114) meshing with the first bevel gear (7110) is mounted on the outer side of the transmission shaft (7112); a first belt pulley (7113) is symmetrically mounted on the outer side of the transmission shaft (7112); a belt (7115) is sleeved on the outer side of each of the first belt pulleys (7113); and each of the belts (7115) is movably sleeved with the limit assembly (72).

5. A PIN needle stamping and forming device according to claim 4, characterized in that: The limiting assembly (72) comprises two second pulleys (723) sleeved with two belts (7115); the inner cavities of the second pulleys (723) are connected to rotating shafts (722); the upper end of the support plate (6) is symmetrically connected to a fixing seat (721) rotatably connected to the rotating shaft (722); one end of the rotating shaft (722) is connected to a rotating rod (724); one side of the rotating rod (724) is connected to a fixing column (725); Both sides of the upper end are symmetrically connected to a limit frame (726), the inner cavity of the limit frame (726) is slidably connected to a T-shaped block (727), a fixing block (728) is commonly connected between the T-shaped blocks (727), one side of the fixing block (728) is screwed to a fixing frame (729), the fixing column (725) is movably sleeved in the inner cavity of the fixing frame (729), and the upper end of the fixing block (728) is connected to a limit plate (7210) opposite to the position of the limit slot (45).

6. A PIN needle stamping and forming device according to claim 5, characterized in that: Both sides of the limiting plate (7210) are connected to blocking bars (7211), and the lower end of the support plate (41) is symmetrically provided with blocking grooves (46) matching the positions of the limiting notches (45) around the edges.

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