Stamping die with yieldable positioning pin structure

Abstract

The present application relates to the technical field of stamping die, particularly relates to a stamping die with a retreatable positioning pin structure, comprising a die top plate, the bottom of the die top plate is provided with an upper die, the lower part of the upper die is provided with a lower die, the bottom of the lower die is provided with a die bottom plate, a positioning pin is arranged between the die top plate and the upper die, and the inside of the die top plate is further provided with an adjusting mechanism for adjusting the positioning pin; the positioning pin, the adjusting mechanism, the lifting plate and the spring are matched, when the material belt positioning hole is dislocated with the positioning pin, the positioning pin can retreat upward along the groove of the limiting plate and compress the spring, the dislocation impact load is absorbed through the elastic deformation of the spring, the traditional rigid positioning structure is replaced, the extrusion and shearing damage of the material belt caused by the positioning pin is avoided, the material belt rejection rate in the thick material stamping debugging and production process is effectively reduced, the mold shutdown failure caused by the material belt fracture and jamming is reduced, and the production continuity and material utilization rate are improved.

Description

Technical Field

[0001] This invention relates to the field of stamping die technology, and in particular to stamping dies with a retractable locating pin structure. Background Technology

[0002] In the manufacturing of structural components for new energy vehicles, thick plate stamping parts are increasingly needed, such as battery pack housings and chassis reinforcement parts. These parts are usually made of thick and high-strength metal plates. During the stamping process, the strip relies on the positioning holes on it to cooperate with the positioning pins in the mold to achieve precise positioning of the step feeding.

[0003] In the process of thick material stamping, due to the large thickness and strength of the strip, the instantaneous impact and resistance generated by the blanking or forming process are significantly increased. In existing dies, the locating pins usually adopt a rigid installation structure, which does not have buffer space or yielding ability. Especially when changing dies and prototyping, misalignment between the locating pin and the locating hole on the strip is very likely to occur. Once misalignment occurs, the locating hole will be squeezed or sheared by the locating pin. Moreover, misalignment between the locating pin and the locating hole will also cause local stress concentration in the strip, resulting in strip breakage or jamming, which in turn leads to abnormal die shutdown, increases maintenance costs and material waste, and reduces production efficiency. Therefore, there is an urgent need for a stamping die with a retractable locating pin structure. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a stamping die with a retractable locating pin structure.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A stamping die with a retractable locating pin structure includes a die top plate, an upper die is provided at the bottom of the die top plate, a lower die is provided below the upper die, a die bottom plate is provided at the bottom of the lower die, a locating pin is provided between the die top plate and the upper die, and an adjustment mechanism for adjusting the locating pin is also provided inside the die top plate. The adjustment mechanism can buffer the resistance generated by the positioning pin to prevent the positioning hole on the strip from misaligning with the positioning pin during the stamping process, which would cause damage to the strip. The adjustment mechanism includes a lifting plate disposed inside the mold top plate, a spring fixed to the top of the lifting plate, a force plate disposed on the top of the spring, and a moving mechanism disposed between the spring and the positioning pin. A storage cavity is provided in the middle of the top plate of the mold. The lifting plate, spring, force plate and positioning pin are all set in the storage cavity. The lifting plate is slidably connected in the storage cavity, and the force plate is set at the top of the storage cavity to seal the storage cavity.

[0006] As a preferred embodiment of the present invention, the moving mechanism includes two lateral adjusting blocks disposed outside the positioning pin, two first threaded rods movably connected to the middle of the two lateral adjusting blocks, two worm gears fixed to the ends of the two first threaded rods, and the two worm gears meshing with a worm. The middle part of the lateral adjustment block is provided with a first threaded hole that matches the first threaded rod, and the worm gear is rotatably installed inside the mold top plate; The mold top plate also has a storage cavity inside, and the bottom of the mold top plate is also provided with a through groove to facilitate the movement of the positioning pin. The through groove is connected to the storage cavity. The worm gear and worm are arranged inside the storage cavity. When the worm is rotated, the worm gear drives the worm gear that meshes with it to rotate. The worm gear drives the first threaded rod to rotate. The first threaded rod cooperates with the threaded hole of the transverse adjustment block, so that the transverse adjustment block moves laterally back and forth. The transverse adjustment block drives the positioning pin to move laterally back and forth.

[0007] As a preferred embodiment of the present invention, two limiting plates are also fixed on the opposite side of the two lateral adjusting blocks, and the two limiting plates are sleeved on the outside of the positioning pin. The two limiting plates have grooves on their opposite sides, and the upper half of the positioning pin is inserted into the grooves. The limiting plate is set as a ring, and the positioning pin is inserted between the two limiting plates. The lateral adjustment block and the limiting plate are set inside the storage cavity of the mold top plate. When the positioning pin is misaligned with the positioning hole of the material strip, the bottom of the positioning pin moves upward under the pressure applied by the material strip. The positioning pin pushes the lifting plate to move upward. The lifting plate compresses the spring and buffers the pressure on the positioning pin, so that the positioning pin moves up and down inside the groove of the two limiting plates to prevent the positioning pin from damaging the material strip.

[0008] As a preferred embodiment of the present invention, two sliding rods are also fixed inside the mold top plate, and a blocking rod is fixed at both ends of the two sliding rods. The sliding rods and the blocking rods are fixed to the inner wall of the storage cavity of the mold top plate. There are four blocking rods, and the blocking rods are evenly fixed at the inner corners of the inner wall of the storage cavity of the mold top plate.

[0009] As a preferred technical solution of the present invention, the lifting plate is provided with a limiting groove adapted to the blocking rod on its outer side, and the lateral adjusting block is also provided with a sliding groove adapted to the sliding rod on the side away from the limiting plate. The lateral adjustment block is sleeved on the outside of the slide bar, and the lifting plate is slidably connected to the blocking bar; The blocking rod is installed in the limiting groove of the lifting plate. When the positioning pin moves upward due to resistance, the positioning pin drives the lifting plate to move upward. The limiting groove of the lifting plate cooperates with the blocking rod to limit the lifting plate and prevent it from deviating when moving vertically up and down. When the horizontal adjusting block moves horizontally, the sliding groove of the horizontal adjusting block cooperates with the sliding rod to limit the horizontal adjusting block and prevent it from deviating when moving horizontally back and forth, thereby avoiding causing the positioning pin to tilt.

[0010] As a preferred technical solution of the present invention, a support plate is also provided on the top of the force plate, and a number of positioning frames for limiting the support plate are fixed on the top of the mold top plate. The support plate is provided with several extension blocks on its exterior, and the bottom of several positioning frames is provided with slots that are adapted to the several extension blocks. A rotating shaft is fixed to the top of the load-bearing plate. A support plate is sleeved on the outside of the rotating shaft. The support plate is cross-shaped. The number of extension blocks is equal to the number of positioning frames. When the support plate is rotated, it rotates around the axis of the rotating shaft. The support plate drives the extension blocks to rotate around the axis of the rotating shaft, so that the extension blocks move to the outside of the positioning frames. The support plate is pulled upward to separate it from the load-bearing plate. Then the load-bearing plate is removed from the top of the mold top plate.

[0011] As a preferred technical solution of the present invention, a plurality of the extended blocks are rotatably connected to a plurality of second threaded rods on the side near the support plate, and the outside of the support plate is also provided with a second threaded hole adapted to the second threaded rods. Several locking rods are inserted into the top of several positioning frames, and several extension blocks and several positioning frames are all provided with locking holes that are adapted to the locking rods; Rotate the second threaded rod, which engages with the second threaded hole, causing the second threaded rod to move the extension block. Adjust the distance between the extension block and the support plate. The bottom of the locking rod passes through the positioning frame and is inserted into the interior of the extension block. The locking rod positions the extension block and the positioning frame.

[0012] As a preferred embodiment of the present invention, a connecting rod is fixed to the top of the worm gear, a knob is fixed to the top of the connecting rod, an insert block is fixed inside the lower mold, a positioning groove adapted to the positioning pin is opened on the top of the insert block, a handle for easy gripping is fixed to the top of the support plate, and a rubber block is provided inside the insert block.

[0013] Compared with the prior art, the beneficial effects that this invention can achieve are: This invention utilizes a combination of a positioning pin, an adjustment mechanism, a lifting plate, and a spring. When misalignment occurs between the positioning pin and the positioning hole of the strip, the positioning pin can retract upward along the groove of the limiting plate and compress the spring. The spring's elastic deformation absorbs the impact load of the misalignment, replacing the traditional rigid positioning structure. This avoids the positioning pin causing squeezing and shearing damage to the strip, effectively reducing the strip scrap rate during the thick material stamping debugging and production process, reducing mold downtime caused by strip breakage and jamming, and improving production continuity and material utilization. This invention, through the cooperation of an adjustment mechanism, a transverse adjustment block, a first threaded rod, a worm gear and a worm, drives the transverse adjustment block and the positioning pin to move laterally and reciprocally, thereby achieving precise stepless adjustment of the positioning pin position. It can adapt to thick material strips with different hole spacing specifications, improve the product adaptability of the mold and the efficiency of production changeover and debugging, and can complete the stamping production of multiple specifications of products without changing the positioning components. This invention utilizes the combination of a lifting plate, a horizontal adjusting block, a limiting plate, a sliding rod, and a blocking rod to create a dual guiding and limiting structure. This structure, formed by the sliding rod and the blocking rod, provides precise guidance and constraints for the horizontal movement of the horizontal adjusting block and the vertical movement of the lifting plate. This prevents the horizontal adjusting block from swaying or shaking during its movement and prevents the lifting plate from jamming or shifting during its vertical retraction. It also ensures the positional accuracy of the lateral adjustment of the positioning pin and the smoothness of the vertical retraction. This invention achieves the circumferential locking function of the locking rod through the cooperation of structures such as the support plate, extension block, positioning frame, locking rod and handle. By simply pulling out the locking rod and rotating the support plate, the limiting connection between the force plate and the mold top plate can be quickly released. The force plate can be removed without disassembling the entire mold base, and the internal springs can be inspected and replaced. This greatly shortens the mold maintenance time, reduces the difficulty of operation and maintenance, and improves the efficiency of daily mold maintenance and fault repair. The present invention utilizes the cooperation of structures such as the lower mold, mold base plate, positioning pin and insert block to ensure that the positioning pin can be accurately embedded in the positioning groove on the top of the insert block when the mold is closed, thus maintaining accurate mold closing positioning accuracy even under the heavy load impact condition of thick material stamping. This invention utilizes the cooperation of structures such as worm gear, worm wheel, knob, and positioning pin. By leveraging the self-locking characteristics of the worm gear and worm wheel, the transmission path is automatically locked after the lateral position of the positioning pin is adjusted by the knob. This ensures that the adjusted position of the positioning pin remains stable and reliable, preventing positional deviation and ensuring the accuracy of the material feeding and positioning. At the same time, it simplifies the overall structure of the mold and reduces manufacturing costs and operational complexity. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the mold top plate of the present invention; Figure 3This is a schematic cross-sectional view of the mold of the present invention; Figure 4 This is a schematic diagram of the structure of the lateral adjustment block of the present invention; Figure 5 This is a schematic diagram of the structure of the first threaded rod of the present invention; Figure 6 This is a schematic diagram of the slide bar of the present invention; Figure 7 This is a schematic diagram of the force-bearing plate of the present invention; Figure 8 This is a schematic diagram of the structure of the support plate of the present invention; Figure 9 This is a schematic diagram of the positioning frame of the present invention; Figure 10 This is a schematic diagram of the structure of the lower mold of the present invention; Figure 11 This is a schematic diagram of the structure of the insert block of the present invention.

[0015] The components are as follows: 1. Mold top plate; 2. Upper mold; 3. Lower mold; 4. Mold bottom plate; 5. Positioning pin; 6. Adjustment mechanism; 601. Lifting plate; 602. Spring; 603. Force plate; 604. Lateral adjustment block; 605. Limiting plate; 606. Sliding rod; 607. First threaded rod; 608. Blocking rod; 609. Worm gear; 610. Worm; 611. Support plate; 612. Extension block; 613. Positioning frame; 614. Locking rod; 615. Handle; 616. Connecting rod; 617. Knob; 618. Insert block; 619. Second threaded rod. Detailed Implementation

[0016] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0017] Example: The present invention provides, as follows Figure 1 and Figure 2 The stamping die shown has a retractable locating pin structure, including a die top plate 1, an upper die 2 at the bottom of the die top plate 1, a lower die 3 below the upper die 2, and a die bottom plate 4 at the bottom of the lower die 3.

[0018] As can be seen from the above, when using it, the positioning pin 5 is installed inside the mold top plate 1, and then the mold top plate 1, upper mold 2, lower mold 3 and mold bottom plate 4 are placed inside the stamping machine. After the positioning pin 5 is aligned with the positioning hole on the strip to be stamped, the stamping operation is carried out.

[0019] refer to Figure 2 , Figure 3 and Figure 4 As shown, a positioning pin 5 is provided between the mold top plate 1 and the upper mold 2, and an adjustment mechanism 6 for adjusting the positioning pin 5 is also provided inside the mold top plate 1. The adjusting mechanism 6 can buffer the resistance generated by the positioning pin 5 to prevent the positioning hole on the strip from being misaligned with the positioning pin 5 during the stamping process, which would cause damage to the strip. The adjustment mechanism 6 includes a lifting plate 601 disposed inside the mold top plate 1, a spring 602 fixed to the top of the lifting plate 601, a force plate 603 disposed on the top of the spring 602, and a moving mechanism disposed between the spring 602 and the positioning pin 5. A storage cavity is provided in the middle of the mold top plate 1. The lifting plate 601, spring 602, force plate 603 and positioning pin 5 are all set in the storage cavity. The lifting plate 601 is slidably connected in the storage cavity, and the force plate 603 is set at the top of the storage cavity to seal the storage cavity.

[0020] refer to Figure 3 , Figure 4 and Figure 5 As shown, the moving mechanism includes two lateral adjusting blocks 604 disposed outside the positioning pin 5. Two first threaded rods 607 are movably connected to the middle of the two lateral adjusting blocks 604. Two worm gears 609 are fixed to the ends of the two first threaded rods 607. The two worm gears 609 mesh with a worm 610. The middle part of the transverse adjusting block 604 is provided with a first threaded hole that matches the first threaded rod 607, and the worm gear 610 is rotatably installed inside the mold top plate 1; The mold top plate 1 also has a storage cavity inside, and the bottom of the mold top plate 1 is also provided with a through groove to facilitate the movement of the positioning pin 5. The through groove is connected to the storage cavity. The worm gear 609 and the worm 610 are located inside the storage cavity. When the worm 610 is rotated, the worm gear 609 meshing with it is rotated. The worm gear 609 drives the first threaded rod 607 to rotate. The first threaded rod 607 cooperates with the threaded hole of the transverse adjusting block 604, so that the transverse adjusting block 604 moves laterally back and forth. The transverse adjusting block 604 drives the positioning pin 5 to move laterally back and forth.

[0021] refer to Figure 4 , Figure 5 and Figure 6As shown, two limiting plates 605 are also fixed on the opposite side of the two horizontal adjusting blocks 604, and the two limiting plates 605 are sleeved on the outside of the positioning pin 5. The two limiting plates 605 have grooves on their opposite sides, and the upper half of the positioning pin 5 is inserted into the grooves. The limiting plate 605 is set as a ring, and the positioning pin 5 is inserted between the two limiting plates 605. The transverse adjusting block 604 and the limiting plate 605 are set inside the storage cavity of the mold top plate 1. When the positioning pin 5 is misaligned with the positioning hole of the strip, the bottom of the positioning pin 5 moves upward under the pressure applied by the strip. The positioning pin 5 pushes the lifting plate 601 to move upward. The lifting plate 601 compresses the spring 602 to buffer the pressure on the positioning pin 5, so that the positioning pin 5 moves up and down inside the groove of the two limiting plates 605 to prevent the positioning pin 5 from damaging the strip.

[0022] refer to Figure 4 , Figure 5 and Figure 6 As shown, two sliding rods 606 are also fixed inside the mold top plate 1. A blocking rod 608 is fixed at both ends of the two sliding rods 606. The sliding rods 606 and the blocking rods 608 are both fixed to the inner wall of the storage cavity of the mold top plate 1. There are four blocking rods 608, and the blocking rods 608 are evenly fixed at the inner corners of the inner wall of the storage cavity of the mold top plate 1.

[0023] The lifting plate 601 has a limiting groove on its outside that is compatible with the blocking rod 608, and the lateral adjusting block 604 has a sliding groove on the side away from the limiting plate 605 that is compatible with the sliding rod 606. The lateral adjustment block 604 is sleeved on the outside of the slide bar 606, and the lifting plate 601 is slidably connected to the blocking bar 608; The blocking rod 608 is installed in the limiting groove of the lifting plate 601. When the positioning pin 5 moves upward due to resistance, the positioning pin 5 drives the lifting plate 601 to move upward. The limiting groove of the lifting plate 601 cooperates with the blocking rod 608 to limit the lifting plate 601 and prevent the lifting plate 601 from deviating when moving vertically up and down. When the horizontal adjusting block 604 moves horizontally, the sliding groove of the horizontal adjusting block 604 cooperates with the sliding rod 606 to limit the horizontal adjusting block 604 and prevent the horizontal adjusting block 604 from deviating when moving horizontally back and forth, thereby avoiding the positioning pin 5 from tilting.

[0024] When the positioning pin 5 is misaligned with the positioning hole of the material strip, the bottom of the positioning pin 5 moves upward under the pressure applied by the material strip. The positioning pin 5 pushes the lifting plate 601 to move upward, the lifting plate 601 compresses the spring 602, and the force plate 603 limits the spring 602, buffering the pressure on the positioning pin 5, so that the positioning pin 5 moves up and down inside the grooves of the two limiting plates 605, preventing the positioning pin 5 from damaging the material strip.

[0025] refer to Figure 7 , Figure 8 and Figure 9 As shown, a support plate 611 is also provided on the top of the force plate 603, and several positioning frames 613 for limiting the support plate 611 are also fixed on the top of the mold top plate 1. The support plate 611 has several extension blocks 612 on its outside, and the bottom of several positioning frames 613 has slots that are adapted to the extension blocks 612. A rotating shaft is fixed to the top of the force plate 603. The support plate 611 is sleeved on the outside of the rotating shaft. The support plate 611 is cross-shaped. The number of extension blocks 612 is equal to the number of positioning frames 613. When the support plate 611 is rotated, the support plate 611 rotates around the axis of the rotating shaft. The support plate 611 drives the extension blocks 612 to rotate around the axis of the rotating shaft, so that the extension blocks 612 move to the outside of the positioning frame 613. The support plate 611 is pulled upward to separate the support plate 611 from the force plate 603. Then the force plate 603 is taken out from the top of the mold top plate 1.

[0026] refer to Figure 7 , Figure 8 and Figure 9 As shown, several extension blocks 612 are rotatably connected to several second threaded rods 619 on one side near the support plate 611, and the support plate 611 is also provided with second threaded holes that are adapted to the second threaded rods 619 on the outside. Several locking rods 614 are inserted into the top of several positioning frames 613, and several extension blocks 612 and several positioning frames 613 are all provided with locking holes that are compatible with the locking rods 614. Rotate the second threaded rod 619, which engages with the second threaded hole, causing the second threaded rod 619 to move the extension block 612. Adjust the distance between the extension block 612 and the support plate 611. The bottom of the locking rod 614 passes through the positioning frame 613 and is inserted into the interior of the extension block 612. The locking rod 614 positions the extension block 612 and the positioning frame 613.

[0027] refer to Figure 10 and Figure 11 As shown, a connecting rod 616 is fixed to the top of the worm gear 610, a knob 617 is fixed to the top of the connecting rod 616, an insert block 618 is fixed inside the lower mold 3, a positioning groove that matches the positioning pin 5 is opened on the top of the insert block 618, a handle 615 that is easy for people to grip is fixed to the top of the support plate 611, and a rubber block is also provided inside the insert block 618.

[0028] Pull out the locking rod 614 to separate it from the extension block 612 and the positioning frame 613; rotate the support plate 611 to make it rotate around the axis of rotation, and the support plate 611 drives the extension block 612 to rotate synchronously around the axis of rotation, so that the extension block 612 moves to the outside of the positioning frame 613; pull the support plate 611 upward to separate it from the force plate 603, and then remove the force plate 603 from the top of the mold top plate 1.

[0029] Working principle: In the positioning and adjustment stage before stamping, the knob 617 is rotated, which drives the connecting rod 616 to rotate synchronously, thereby driving the worm gear 610 to rotate around its own axis. The worm gear 610 drives the worm wheels 609 on both sides to rotate synchronously through tooth surface meshing transmission. The worm wheels 609 are coaxially fixedly connected to the first threaded rod 607, thereby driving the first threaded rod 607 to rotate around its own axis. The first threaded rod 607 forms a threaded transmission engagement with the threaded hole on the transverse adjustment block 604, converting the rotational motion into linear motion. Under the guidance of the slide rod 606, the transverse adjustment block 604 moves horizontally back and forth along the axis of the first threaded rod 607. The blocking rod 608 forms an end limit limit on the movement stroke of the transverse adjustment block 604. The transverse adjustment block 604 drives the limiting plate 605 to move laterally synchronously, thereby driving the positioning pin 5 to slide laterally along the guide groove on the mold top plate 1, thereby completing the precise adjustment of the transverse position of the positioning pin 5 to adapt to the positioning hole requirements of different material strips. During the stamping operation, the mold top plate 1 drives the upper mold 2 to move downwards and close with the lower mold 3 fixed on the mold bottom plate 4 to complete the stamping of thick material. When there is a misalignment between the positioning pin 5 and the positioning hole of the strip, the lower end of the positioning pin 5 is subjected to the upward pressure of the strip surface, resulting in vertical displacement. At this time, the positioning pin 5 slides vertically upwards along the inner wall of the groove of the two side limit plates 605, while the upper end of the positioning pin 5 pushes the lifting plate 601 to move upwards. The lifting plate 601 applies pressure to the spring 602, causing it to compress and deform. The force plate 603 forms an axial limit on the upper end of the spring 602. The elastic deformation of the spring 602 absorbs the impact load and buffers and unloads the pressure on the positioning pin 5, so that the positioning pin 5 can adaptively float up and down in the groove of the two side limit plates 605, avoiding rigid collisions that could cause damage to the strip or the positioning pin 5. This achieves fault tolerance buffering and strip protection when the positioning is misaligned. During the maintenance and repair phase, when the spring 602 needs to be replaced or repaired after the stamping operation, first pull the locking rod 614 through the handle 615 to disengage the locking rod 614 from the mating hole between the extension block 612 and the positioning frame 613, thus releasing the circumferential locking limit; then rotate the support plate 611 to deflect around the axis of rotation, causing the extension block 612 to rotate synchronously around the axis of rotation, so that the extension block 612 rotates to the outside of the positioning frame 613, thus releasing the locking limit between the two; pull the support plate 611 upward to separate the force plate 603 from the mold top plate 1 as a whole, remove the force plate 603 from the top of the mold top plate 1, and then expose the spring 602 inside, completing the repair and replacement operation of the spring 602.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A stamping die with a retractable locating pin structure, comprising a die top plate (1), an upper die (2) disposed at the bottom of the die top plate (1), a lower die (3) disposed below the upper die (2), and a die bottom plate (4) disposed at the bottom of the lower die (3), characterized in that, A positioning pin (5) is provided between the mold top plate (1) and the upper mold (2), and an adjustment mechanism (6) for adjusting the positioning pin (5) is also provided inside the mold top plate (1). The adjustment mechanism (6) can buffer the resistance generated by the positioning pin (5) to prevent the positioning hole on the strip from being misaligned with the positioning pin (5) during the stamping process, which would cause damage to the strip. The adjustment mechanism (6) includes a lifting plate (601) disposed inside the mold top plate (1), a spring (602) fixed on the top of the lifting plate (601), a force plate (603) disposed on the top of the spring (602), and a moving mechanism disposed between the spring (602) and the positioning pin (5).

2. The stamping die with a retractable locating pin structure according to claim 1, characterized in that, The moving mechanism includes two lateral adjusting blocks (604) disposed outside the positioning pin (5). Two first threaded rods (607) are movably connected to the middle of the two lateral adjusting blocks (604). Two worm gears (609) are fixed to the ends of the two first threaded rods (607). The two worm gears (609) mesh with a worm (610). The middle part of the transverse adjustment block (604) is provided with a first threaded hole that is compatible with the first threaded rod (607), and the worm gear (610) is rotatably installed inside the mold top plate (1).

3. The stamping die with a retractable locating pin structure according to claim 2, characterized in that, Two limiting plates (605) are also fixed on the opposite side of the two lateral adjusting blocks (604), and the two limiting plates (605) are sleeved on the outside of the positioning pin (5); The two limiting plates (605) have grooves on their opposite sides, and the upper half of the positioning pin (5) is inserted into the grooves.

4. The stamping die with a retractable locating pin structure according to claim 1, characterized in that, The mold top plate (1) is also fixed with two slide rods (606), and each end of the two slide rods (606) is fixed with a stop rod (608).

5. The stamping die with a retractable locating pin structure according to claim 2, characterized in that, The lifting plate (601) has a limiting groove on its outside that is compatible with the blocking rod (608), and the side of the horizontal adjusting block (604) away from the limiting plate (605) also has a sliding groove that is compatible with the sliding rod (606). The lateral adjustment block (604) is sleeved on the outside of the slide bar (606), and the lifting plate (601) is slidably connected to the blocking bar (608).

6. The stamping die with a retractable locating pin structure according to claim 2, characterized in that, The top of the load-bearing plate (603) is also provided with a support plate (611), and the top of the mold top plate (1) is also fixed with several positioning frames (613) for limiting the support plate (611). The support plate (611) is provided with several extension blocks (612) on its outside, and the bottom of several positioning frames (613) is provided with slots that are adapted to the extension blocks (612).

7. The stamping die with a retractable locating pin structure according to claim 6, characterized in that, A plurality of the extension blocks (612) are rotatably connected to a plurality of second threaded rods (619) on the side near the support plate (611), and the support plate (611) is also provided with second threaded holes that are adapted to the second threaded rods (619) on the outside. A number of locking rods (614) are inserted into the top of a number of positioning frames (613), and a number of extension blocks (612) and a number of positioning frames (613) are provided with locking holes that are compatible with the locking rods (614).

8. The stamping die with a retractable locating pin structure according to claim 6, characterized in that, The top of the worm gear (610) is also fixed with a connecting rod (616), the top of the connecting rod (616) is fixed with a knob (617), the inside of the lower mold (3) is also fixed with an insert (618), the top of the insert (618) is provided with a positioning groove that matches the positioning pin (5), and the top of the support plate (611) is also fixed with a handle (615) that is easy for people to grip.

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