Stamping die frame convenient to replace

Abstract

The invention relates to a stamping die frame convenient to replace, which relates to the technical field of die manufacturing, and comprises a die plate, a die core, a first clamping plate and a second clamping plate which are connected with the die plate in a sliding manner to clamp the die core in a matched manner, a driving part controls clamping and loosening of the clamping plates, a positioning rod guarantees positioning between the clamping plates, and the die core is connected with a positioning part. The clamping plate is connected with the limiting piece and used for adjusting and locking the position of the mold core. In addition, various related assemblies such as a clamping plate, a dovetail block, a waved plate, a metal positioning block and an electromagnet are further arranged, and the structure is further optimized. According to the stamping die frame, the technical effects that the die core in the stamping die frame is convenient to replace, the position of the die core can be gradually adjusted and locked in the clamping process, and the working stability and precision of the stamping die frame are guaranteed are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of mold manufacturing, and in particular to a stamping mold frame that is easy to replace. Background Art

[0002] Stamping die sets play a crucial role in the mechanical manufacturing industry. With the booming manufacturing industry, demands for product precision, production efficiency, and die life are increasing. As the foundational component of stamping dies, the performance of stamping die sets directly impacts the quality of stamped products and the stability of the production process. High-quality stamping die sets ensure smooth stamping processes, improve product consistency and yield, and thus enhance the efficiency of the entire production process. These die sets are widely used in numerous industries, including automotive manufacturing, electronic equipment production, and aerospace.

[0003] In the design and use of stamping mold frames in related technologies, bolt fastening and simple locating pins are often used to fix and position the mold core. Bolt fastening is to fix the mold core directly to the mold plate with bolts. This method can provide a certain fastening force, but the installation and disassembly process is relatively cumbersome, and professional tools are required to tighten or loosen the bolts one by one, which consumes a lot of time and manpower. Simple locating pins are to pre-drill holes on the mold plate and the mold core, and insert locating pins to determine the position of the mold core. However, this positioning method has limited accuracy and is easily affected by factors such as pin hole processing accuracy and locating pin wear, making it difficult to meet the needs of high-precision stamping production. In addition, there are some methods that use welding to connect the mold core to the mold plate. Although the connection is firm, once the mold core is damaged or needs to be replaced, it is difficult to disassemble, and may even cause the entire mold to be scrapped.

[0004] The stamping die frames in the related art have obvious deficiencies in terms of die core fixation and positioning. The bolt tightening method is complex and inefficient, and will seriously affect the production schedule in production scenarios where the die cores are frequently replaced. The positioning accuracy of simple locating pins is insufficient, resulting in large dimensional deviations in stamped products, making it difficult to meet high-precision quality requirements. Welding connections lack flexibility, making it difficult to easily replace the die core, which increases production costs. Moreover, when faced with die cores of different specifications and sizes, traditional methods are often difficult to adapt quickly and cannot meet diverse production needs. Summary of the Invention

[0005] In order to facilitate the replacement of the mold core, the present application provides a stamping mold frame that is easy to replace.

[0006] A stamping die frame that is easy to replace, comprising a die plate, a die core, and: The first clamping plate and the second clamping plate are slidably connected to the mold plate, and the first clamping plate and the second clamping plate cooperate to clamp the mold core. The first clamping plate and the second clamping plate are provided with sliding surfaces, and the mold core abuts against the sliding surfaces. A driving member connected to the mold plate, the driving member controls the first clamping plate and the second clamping plate to clamp the mold core or release the mold core; A positioning rod connected to the first splint or the second splint, wherein the positioning rod on the first splint is inserted into the second splint, and the positioning rod on the second splint is inserted into the first splint; Positioning piece, connected to the mold core; The limiting member is connected to the first clamping plate or the second clamping plate. When the driving member controls the first clamping plate and the second clamping plate to clamp the mold core, the limiting member and the positioning member gradually adjust and lock the position of the mold core during the clamping process.

[0007] By adopting the above technical solution, the first clamping plate and the second clamping plate are slidably connected to the mold plate and cooperate to clamp the mold core, which facilitates the installation and disassembly of the mold core; the driving part can control the clamping and releasing operations of the clamping plate, which is convenient for replacing the mold core; the positioning rod is inserted into the clamping plate, which enhances the connection stability between the clamping plates; the positioning part and the limit part gradually adjust and lock the position of the mold core when the clamping plate clamps the mold core, thereby improving the accuracy and stability of the mold core installation.

[0008] Optionally, the mold core is provided with a clamping plate, the positioning member is connected to the clamping plate, the clamping plate is connected to the mounting plate, and the mounting plate abuts against the sliding surface; when the positioning member conflicts with the limiting member, the limiting member pushes the mounting plate to slide on the sliding surface.

[0009] By adopting the above technical solution, when the driving member controls the first clamping plate and the second clamping plate to clamp the mold core, the limiting member can push the mounting plate to slide on the sliding surface when the positioning member conflicts with the limiting member, thereby adjusting the position of the mold core and improving the accuracy of the two mold cores when closing the mold.

[0010] Optionally, the mounting plate is connected to a dovetail block, and a plug-in slot matching the dovetail block is opened on the mold plate. The dovetail block is inserted into the plug-in slot, and a limit spring is fixedly connected to the inner wall of the plug-in slot. The limit spring is used to prevent the dovetail block from excessively slipping in the plug-in slot.

[0011] By adopting the above technical solution, the mounting plate is connected to the dovetail block, and the mold plate is provided with a matching plug-in slot. The dovetail block is inserted into the plug-in slot and passes through the limit spring on the inner wall, which can prevent the dovetail block from sliding excessively in the plug-in slot, so that the mold core is more stably in the predetermined position, which is beneficial for the driving part to control the first clamping plate and the second clamping plate to accurately clamp or release the mold core. At the same time, the positioning rod can further assist in locking, and the limit part and the positioning part gradually adjust and lock the mold core position, thereby improving the accuracy and stability of the mold core position when the stamping die frame is in use and facilitating the replacement of the mold core.

[0012] Optionally, the positioning member includes a positioning plate composed of multiple wave plates, the limiting member includes a limiting plate composed of multiple wave plates, the wave plates between adjacent two of the positioning plate and the limiting plate are staggered, and the wave plates constituting the positioning plate and the limiting plate are oriented in the same direction.

[0013] By adopting the above technical solution, a plurality of wave plates that are offset and face the same direction are used to form a positioning plate and a limiting plate respectively. During the process of the first clamping plate and the second clamping plate sliding and clamping the mold core, when there is an offset in the position of the clamping plate, the wave plate on the positioning plate will be squeezed by the wave plate on the limiting plate, so that the wave plate on the positioning plate will gradually fit the wave plate on the limiting plate, thereby adjusting the position of the mounting plate on the lining plate, improving the accuracy of the two mold cores when closing the mold, and at the same time locking the position of the clamping plate through the abutment between the positioning plate and the limiting plate.

[0014] In addition, the first clamping plate and the second clamping plate can cooperate to slide and clamp the mold core, and the driving part can control it to clamp or release the mold core. The positioning rod inserted into the other clamping plate can further lock the clamping plate. The mold core is provided with a clamping plate and an installation plate, and the installation plate can slide on the sliding surface, providing basic conditions for the positioning plate and the limit plate to play an adjustment and locking role.

[0015] Optionally, a memory alloy sheet is connected to the end of the corrugated plate, and the corrugated plate is connected to the clamping plate or the first clamping plate or the second clamping plate through the memory alloy sheet.

[0016] By adopting the above technical solution, the memory alloy sheet at the end of the corrugated plate can shrink in a high temperature environment to compensate for the gap caused by the expansion of the mold core, so that the clamping plate and the snap-on plate can automatically adjust the clamping force when the temperature changes, thereby improving the stability and life of the mold frame.

[0017] Optionally, a lubricating layer is provided on the surface of the wave plate.

[0018] By adopting the above technical solution, a lubricating layer is provided on the surface of the wave plate, which can reduce the damage to the surface of the wave plate when the positioning plate and the limit plate are squeezed and rubbed.

[0019] Optionally, the positioning member includes a metal positioning block with a triangular cross-section, the clamping plate is provided with a clamping groove, and the positioning block is connected to the bottom of the clamping groove through a first return spring; the first splint or the second splint is provided with a limiting groove, and a shielding sleeve is inserted into the limiting groove; the limiting member includes an electromagnet installed in the shielding sleeve, the bottom surface of the shielding sleeve is connected to a metal block, and the end of the electromagnet away from the positioning member is connected to the metal block through a second return spring, and the mold plate is provided with a battery connected to the electromagnet.

[0020] By adopting the above technical solution, the positioning part adopts a metal positioning block with a triangular cross-section, which is connected to the clamping groove of the clamping plate through a first return spring. The electromagnet of the limiting part is installed in the shielding sleeve and connected to the metal block through a second return spring. The battery powers the electromagnet. After the electromagnet is energized, it can drag the positioning block to slide into the limiting groove. When the position of the clamping plate is offset, the positioning block is squeezed with the limiting groove and the inner wall of the clamping groove to cause the mounting plate to slide, thereby adjusting the position of the mounting plate and improving the accuracy when the two mold cores are clamped.

[0021] Optionally, a docking groove for inserting the electromagnet is provided on the positioning block, and when the first clamping plate or the second clamping plate clamps the mold core, the electromagnet extends into the docking groove.

[0022] By adopting the above technical solution, a docking groove is provided on the positioning block, and when the first clamping plate or the second clamping plate clamps the mold core, the electromagnet can extend into the docking groove, and cooperate with the structure in which the positioning block and the clamping plate are connected by the first return spring, and the electromagnet and the metal block are connected by the second return spring, so that after the electromagnet is energized, magnetic attraction is formed between the electromagnet and the positioning block, driving the positioning block to move, and in the process of inserting the positioning block into the limit groove, if the position of the clamping plate is offset, the positioning block is squeezed against the limit groove and the inner wall of the clamping groove, pushing the mounting plate to slide on the sliding surface, thereby adjusting the position of the mounting plate and improving the accuracy of the two mold cores when closing the mold.

[0023] Optionally, the driving member includes a driving cylinder fixedly connected to the mold plate, the piston rod of the driving cylinder is connected to the first splint or the second splint, and the driving cylinder is inserted with a leather hose, which is connected to the air tank through a metering valve.

[0024] By adopting the above technical solution, the driving cylinder is fixedly connected to the mold plate and the piston rod is connected to the clamping plate, so as to drive the first clamping plate and the second clamping plate to slide on the mold plate, thereby clamping or loosening the mold core; the driving cylinder and the air tank are connected by a leather hose, and the metering valve is used for control, so the extension and contraction of the piston rod can be accurately controlled to ensure that the sliding speed and sliding distance of the first clamping plate and the second clamping plate on the mold plate match, thereby facilitating the replacement operation of the mold core.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The first and second clamping plates are slidably connected to the mold plate, and the driving element controls them to clamp or release the mold core, avoiding the cumbersome operation of bolt tightening, improving the efficiency of mold core replacement, and meeting the production needs of frequent mold core replacement; 2. The positioning parts and limiters gradually adjust and lock the position of the die core during the clamping process, solving the problem of limited positioning accuracy of traditional positioning pins and improving the accuracy of the two die cores when closing the mold, thereby ensuring the quality of the stamping product; 3. In a high temperature environment, the memory alloy sheet at the end of the wave plate can shrink to compensate for the gap caused by the expansion of the mold core, so that the clamping plate and the connecting plate can automatically adjust the clamping force when the temperature changes, thereby improving the stability and service life of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 It is a schematic diagram of a partial explosion structure of Example 1 of the present application, mainly showing the limit plate; Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A; Figure 4 yes Figure 1 Schematic diagram of the cross-sectional structure along the AA plane; Figure 5 It is a partial structural diagram of Example 1 of the present application, mainly showing the positioning plate; Figure 6 This is a schematic diagram of the overall structure of Example 2 of the present application; Figure 7 yes Figure 6 Schematic diagram of the cross-sectional structure along the BB plane.

[0027] Description of the drawings: 1. Mold plate; 2. Mold core; 3. First splint; 4. Second splint; 5. Limiting column; 6. Guide column; 7. Buffer spring; 8. Driving cylinder; 9. Injection valve; 10. Lining plate; 11. Splint groove; 12. Plug-in plate; 13. Connecting plate; 14. Clamping plate; 15. Positioning rod; 16. Snap-in plate; 17. Mounting plate; 18. Dovetail block; 19. Plug-in groove; 20. Limiting spring; 21. Positioning plate; 22. Limiting plate; 23. Memory alloy sheet; 24. Snap-in groove; 25. Limiting groove; 26. Shielding groove; 27. Shielding sleeve; 28. Positioning block; 29. ​​First reset spring; 30. Bump; 31. Battery; 32. Metal block; 33. Second reset spring; 34. Electromagnet. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1 -Attached Figure 7 , further details of this application are given.

[0029] Example 1: A stamping die set that is easy to replace, refer to Figure 1 The mold core 2 is comprised of two mold plates 1 and two mold cores 2. A mold core 2 is detachably connected to each mold plate 1. A first clamping plate 3 and a second clamping plate 4 are slidably connected to the mold plates 1, and the first clamping plate 3 and the second clamping plate 4 are used to clamp and secure the mold core 2. Furthermore, the mold core 2 is provided with a positioning member. A limit member is provided on the surface of the first clamping plate 3 or the second clamping plate 4 that clamps the mold core 2. The limit member and the positioning member gradually adjust and lock the position of the mold core 2 during the clamping process.

[0030] A limiting post 5 is fixedly connected to the bottom mold plate 1. A guide post 6 is sleeved within the limiting post 5. One end of the guide post 6 penetrates the top mold plate 1. A buffer spring 7 is sleeved on the surface of the guide post 6 located between the two mold plates 1. One end of the buffer spring 7 is fixedly connected to the limiting post 5. When an external hydraulic cylinder drives the top mold plate 1 to move along the guide rod toward the bottom mold plate 1, the buffer spring 7 can absorb the kinetic energy of the stamping moment, reducing the impact of rigid collision on the mold core 2, the equipment, and the workpiece inside the mold core 2.

[0031] The mold plate 1 is fixedly connected to two drive cylinders 8 located on either side of the mold core 2. The piston rods of the drive cylinders 8 are fixedly connected to either the first clamping plate 3 or the second clamping plate 4. The drive cylinders 8 are also fixedly connected to an air injection valve 9, which is detachably connected to a hose connected to an air tank via a metering valve. The drive cylinders 8 control the extension and retraction of the piston rods via the metering valves, ensuring that the sliding speed and distance of each first clamping plate 3 and second clamping plate 4 on the mold plate 1 match.

[0032] Reference Figure 2 、 Figure 3 、 Figure 4 The mold plate 1 is fixedly connected to a liner 10. The liner 10 has two openings 11 with opposite openings. The first and second liner 3 and 4 extend into the corresponding liner grooves 11. The first and second liner 3 and 4 have the same structure, and both include a plug-in plate 12, a connecting plate 13, and a clamping plate 14 that are fixedly connected in sequence. The plug-in plate 12 extends into the liner groove 11 and abuts against the inner wall of the liner groove 11. The side of the plug-in plate 12 facing away from the mold plate 1 is flush with the side of the liner 10 facing away from the mold plate 1.

[0033] The side of the connecting plate 13 away from the mold core 2 is fixedly connected to the piston rod of the driving cylinder 8 .

[0034] A positioning rod 15 passes through the end portion of the clamping plate 14 close to the mold core 2, and a positioning groove is opened at the other end portion of the clamping plate 14, so that the positioning rod 15 on the first clamping plate 3 is inserted into the positioning groove of the second clamping plate 4, and the positioning rod 15 of the second clamping plate 4 is inserted into the positioning groove of the first clamping plate 3, and the positioning rod 15 on the first clamping plate 3 is fixed to the first clamping plate 3 by bolts, and the positioning rod 15 on the second clamping plate 4 is fixed to the second clamping plate 4 by bolts.

[0035] The mold core 2 is fixedly connected to a snap-in plate 16, and a mounting plate 17 is fixedly connected to the side of the snap-in plate 16 away from the mold core 2. The mounting plate 17 is installed between the plug-in plate 12 and the clamping plate 14, and the mounting plate 17 abuts against the plug-in plate 12 and the clamping plate 14 respectively. The side of the clamping plate 14 opposite to the plug-in plate 12 is set as a sliding surface and coated with lubricating oil, so that the mounting plate 17 can slide between the clamping plate 14 and the plug-in plate 12. Two dovetail blocks 18 are fixedly connected to the side of the mounting plate 17 away from the snap-in plate 16, and the lining plate 10 is provided with two plug-in slots 19 between the two clamping plate slots 11. The inner wall of one side of the plug-in slot 19 is connected to the outside world and is set as an insertion port, and the inner wall of the other side of the plug-in slot 19 is fixedly connected to a limit spring 20. The limit spring 20 can be used to prevent the dovetail block 18 from excessively sliding in the plug-in slot 19 during installation.

[0036] Reference Figure 4 、 Figure 5 The clamping plate 16 contacts the clamping plate 14, and the positioning member is installed on the clamping plate 16, and the limiting member is installed on the clamping plate 14. The positioning member includes a positioning plate 21 composed of a plurality of corrugated plates. At the same time, the corrugated plates between two adjacent ones of the positioning plate 21 are staggered. The ends of the corrugated plates are fixedly connected to a memory alloy sheet 23, which is fixedly connected to the side wall of the clamping plate 16 near the clamping plate 14; the limiting member includes a limiting plate 22 composed of a plurality of corrugated plates. At the same time, the corrugated plates between two adjacent ones of the limiting plate 22 are staggered. The ends of the corrugated plates are fixedly connected to a memory alloy sheet 23, which is fixedly connected to the side wall of the clamping plate 14 near the clamping plate 16. Moreover, the wave plates constituting the positioning plate 21 and the limiting plate 22 are oriented in the same direction, so that the positioning plate 21 and the limiting plate 22 can fit tightly together. In addition, a lubricating layer is coated on the surface of the wave plates to reduce damage to the surface of the wave plates when the positioning plate 21 and the limiting plate 22 are squeezed and rubbed.

[0037] The implementation principle of Example 1 of the present application is: during assembly, the lining plate 10 is first fixedly connected to the mold plate 1 by bolts, and then the first clamping plate 3 and the second clamping plate 4 are respectively inserted into the clamping plate groove 11 on the corresponding side, and then the cylinder body of the driving cylinder 8 is fixed to the mold plate 1 by bolts, and the piston rod of the driving cylinder 8 is fixedly connected to the connecting plate 13 by bolts.

[0038] After the two mold plates 1 are installed and initially assembled, the mold plate 1 without the limiting column 5 is lifted and aligned with the guide column 6 on the limiting column 5, and the two mold plates 1 are closed by the guide column 6. In addition, the buffer spring 7 lifts the mold plate 1 at the top to provide space for the top mold plate 1 to stamp and slide toward the bottom mold plate 1.

[0039] After the mold plate 1 is installed, the rubber hose is inserted into the corresponding air injection valve 9 of the drive cylinder 8. Next, the dovetail block 18 on the mounting plate 17 is inserted into the liner 10 through the insertion port. This pushes the dovetail block 18 into contact with the limit spring 20, causing the clamping plate 16, mounting plate 17, and mold core 2 to slide to the predetermined position. The mounting plate 17 abuts the sliding surfaces of the plug plate 12 and clamping plate 14. Next, the metering valve on the air tank is opened, allowing the piston rod of the drive cylinder 8 to push the first clamping plate 3 and the second clamping plate 4 toward the mold core 2.

[0040] During the sliding and clamping process between the first clamping plate 3 and the second clamping plate 4, the mounting plate 17 slides on the sliding surface, causing the limiting plate 22 to slide toward the positioning plate 21. When the limiting plate 22 abuts against the positioning plate 21, the wave plate on the limiting plate 22 abuts against the wave plate on the positioning plate 21. When the position of the clamping plate 16 is offset, the wave plate on the positioning plate 21 is squeezed by the wave plate on the limiting plate 22, causing the wave plate on the positioning plate 21 to gradually fit into the wave plate on the limiting plate 22. This adjusts the position of the mounting plate 17 on the lining plate 10, improves the accuracy of the two mold cores 2 when closing the mold, and locks the position of the clamping plate 16 through the abutment between the positioning plate 21 and the limiting plate 22.

[0041] After the clamping is completed, the positioning rod 15 on the first clamping plate 3 is inserted into the positioning groove of the second clamping plate 4, and the positioning rod 15 of the second clamping plate 4 is inserted into the positioning groove of the first clamping plate 3, thereby further locking the clamping plate 16.

[0042] In addition, when working in a high temperature environment, the clamping plate 14 and the snap-on plate 16 expand due to heat, and at the same time, the memory alloy sheet 23 contracts when the temperature rises, compensating for the gap caused by the expansion of the mold core 2, so that the clamping plate 14 and the snap-on plate 16 can automatically adjust the clamping force when the temperature changes.

[0043] Example 2: A stamping die set that is easy to replace, refer to Figure 6 、 Figure 7 The difference between this embodiment and the first embodiment is that the clamping plate 16 is provided with two clamping grooves 24 with openings facing each other, and a first return spring 29 is fixedly connected to the bottom of the clamping groove 24. In addition, the positioning member includes a metal positioning block 28 with a triangular cross-section. The positioning block 28 is fixedly connected to the first return spring 29, and a protrusion 30 is fixedly connected to the positioning block 28. When the positioning block 28 extends out of the clamping groove 24, the protrusion 30 abuts against the inner wall of the clamping groove 24 to lock it in place.

[0044] The clamping plate 14 is provided with a limiting groove 25 that mates with the positioning block 28. A shielding groove 26 is provided at the bottom of the limiting groove 25, and a cylindrical shielding sleeve 27 is inserted into the shielding groove 26. A metal block 32 is fixedly connected to the bottom of the shielding sleeve 27, to which a second return spring 33 is fixedly connected. The limiting member includes an electromagnet 34 fixedly connected to the second return spring 33. The positioning block 28 is provided with a docking groove. When installed, the core of the electromagnet 34 is inserted into the docking groove and abuts against the bottom of the docking groove. Through holes are provided in the metal block 32 and the shielding sleeve 27. The mold plate 1 at the bottom contains a battery 31. The wires of the battery 31 are sequentially passed through the shielding sleeve 27, the metal block 32, and the electromagnet 34.

[0045] The implementation principle of Example 2 of the present application is as follows: after the first clamping plate 3 and the second clamping plate 4 complete the clamping of the clamping plate 16, the mounting plate 17 abuts against the plug-in plate 12 and the clamping plate 14. Then, the battery 31 is started, and the electromagnet 34 is energized, so that magnetic attraction is formed between the electromagnet 34 and the positioning block 28, and between the electromagnet 34 and the metal block 32, so that the electromagnet 34 drags the positioning block 28 to slide into the limiting groove 25. At this time, the first return spring 29 deforms and stretches, and the second return spring 33 deforms and contracts. Moreover, the elastic thrust formed by the first return spring 29 and the second return spring 33 is smaller than the magnetic attraction between the electromagnet 34 and the metal block 32, and between the electromagnet 34 and the positioning block 28.

[0046] Moreover, when the positioning block 28 is inserted into the limit groove 25, when the position of the clamping plate 16 is offset, the positioning block 28 is squeezed against the inner wall of the limit groove 25, and the positioning block 28 is squeezed against the inner wall of the clamping groove 24, so that the mounting plate 17 slides between the plug-in plate 12 and the clamping plate 14, thereby adjusting the position of the mounting plate 17 on the lining plate 10 and improving the accuracy of the two mold cores 2 when closing the mold.

[0047] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A stamping die frame that is easy to replace, comprising a die plate (1) and a die core (2), characterized in that: Also includes: The first clamping plate (3) and the second clamping plate (4) are slidably connected to the mold plate (1); the first clamping plate (3) and the second clamping plate (4) cooperate to clamp the mold core (2); the first clamping plate (3) and the second clamping plate (4) are provided with sliding surfaces, and the mold core (2) abuts against the sliding surfaces; A driving member connected to the mold plate (1), the driving member controlling the first clamping plate (3) and the second clamping plate (4) to clamp the mold core (2) or release the mold core (2); A positioning rod (15) is connected to the first clamping plate (3) or the second clamping plate (4), wherein the positioning rod (15) on the first clamping plate (3) is inserted into the second clamping plate (4), and the positioning rod (15) on the second clamping plate (4) is inserted into the first clamping plate (3); A positioning member connected to the mold core (2); A limiting member is connected to the first clamping plate (3) or the second clamping plate (4); when the driving member controls the first clamping plate (3) and the second clamping plate (4) to clamp the mold core (2), the limiting member and the positioning member gradually adjust and lock the position of the mold core (2) during the clamping process.

2. The easily replaceable stamping die set according to claim 1, characterized in that: The mold core (2) is provided with a clamping plate (16), the positioning member is connected to the clamping plate (16), the clamping plate is connected to a mounting plate (17), and the mounting plate (17) abuts against the sliding surface; When the positioning member and the limiting member come into conflict, the limiting member pushes the mounting plate (17) to slide on the sliding surface.

3. The stamping die frame that is easy to replace according to claim 2, characterized in that; The mounting plate (17) is connected to a dovetail block (18), and a plug-in slot (19) matching the dovetail block (18) is provided on the mold plate (1), and the dovetail block (18) is inserted into the plug-in slot (19). The inner wall of the plug-in slot (19) is fixedly connected to a limit spring (20), and the limit spring (20) is used to prevent the dovetail block (18) from excessively sliding in the plug-in slot (19).

4. The stamping die frame that is easy to replace according to claim 2, characterized in that; The positioning member comprises a positioning plate (21) composed of a plurality of wave plates, and the limiting member comprises a limiting plate (22) composed of a plurality of wave plates. The wave plates between two adjacent ones on the positioning plate (21) and the limiting plate (22) are staggered, and the wave plates constituting the positioning plate (21) and the limiting plate (22) face the same direction.

5. The stamping die frame that is easy to replace according to claim 4, characterized in that; The end of the wave plate is connected to a memory alloy sheet (23), and the wave plate is connected to the clamping plate (16) or the first clamping plate (3) or the second clamping plate (4) through the memory alloy sheet (23).

6. The stamping die frame that is easy to replace according to claim 5, characterized in that; A lubricating layer is provided on the surface of the wave plate.

7. The easily replaceable stamping die set according to claim 2, characterized in that: The positioning member comprises a metal positioning block (28) with a triangular cross section, the clamping plate (16) is provided with a clamping groove (24), and the positioning block (28) is connected to the bottom of the clamping groove (24) via a first return spring (29); The first clamping plate (3) or the second clamping plate (4) is provided with a limiting groove (25), and a shielding sleeve (27) is inserted into the limiting groove (25); The limiting member comprises an electromagnet (34) installed in a shielding sleeve (27); a metal block (32) is connected to the bottom surface of the shielding sleeve (27); an end of the electromagnet (34) away from the positioning member is connected to the metal block (32) via a second return spring (33); and the mold plate (1) is provided with a battery (31) connected to the electromagnet (34).

8. The easily replaceable stamping die set according to claim 7, characterized in that: The positioning block (28) is provided with a docking groove for inserting the electromagnet (34). When the first clamping plate (3) or the second clamping plate (4) clamps the mold core (2), the electromagnet (34) extends into the docking groove.

9. The easily replaceable stamping die set according to claim 1, characterized in that: The driving member comprises a driving cylinder (8) fixedly connected to the mold plate (1); a piston rod of the driving cylinder (8) is connected to the first clamping plate (3) or the second clamping plate (4); a leather hose is inserted into the driving cylinder (8); and the leather hose is connected to the gas storage tank through a metering valve.

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