A multi-station synchronous stamping forming die

Abstract

A kind of die of multi-station synchronous stamping forming belongs to stamping die technical field.It includes upper and lower die mechanism, plate is placed on lower die mechanism and moves step by step;Punching punch, forming punch, fine punching punch and a pair of chamfer punch and cutting plate are arranged at the lower of upper die mechanism with interval, lower die mechanism is formed with punching recess, forming recess, guide recess, fine punching recess and chamfer recess and cutting seat at the position corresponding to punching punch, forming punch, fine punching punch and chamfer punch and cutting plate, upper die mechanism is additionally provided with self-adapting guide pin at the position between forming punch and fine punching punch, the lower end of guide pin is gradually curved surface structure of bullet head shape, guide pin is slidably installed on upper die mechanism, guide pin spring is arranged above guide pin, the lower end of guide pin protrudes from upper die mechanism under the pressure of the spring.Optical advantage: improve the machining accuracy when processing different plate thickness, reduce processing cost.

Description

Technical Field

[0001] This utility model belongs to the field of stamping die technology, specifically relating to a die for multi-station synchronous stamping. Background Technology

[0002] Stamping is a processing method that uses a press and a die to apply external force to a metal sheet, causing it to undergo plastic deformation or separation to obtain the desired shape. It has the advantages of high efficiency, high precision, and high material utilization. Stamping dies are an essential component in the stamping process. Stamping dies generally include an upper die and a lower die. When the upper die and the lower die are closed together, the middle part is stamped to form the shape of the upper die and the lower die.

[0003] However, current stamping dies can often only process parts of one specification, and their accuracy is relatively low when the stamping direction is opposite on the same part. Furthermore, as the industry's requirements for stamped parts become higher and higher, and competition becomes more intense, especially for orders with large volume and short delivery time that require rapid response, if conventional dies are used for processing, multiple sets of dies need to be designed, and the dies need to be adapted to various stamping processing situations. Therefore, it is difficult to control the design, management and processing costs.

[0004] Currently, the industry often needs to stamp plate-shaped parts with a star-shaped stretching cavity and bosses around the edges. The thickness of the sheet metal for these plate-shaped parts varies, and the required engraving and chamfering styles also vary. If processed with existing conventional stamping dies, not only are different stamping dies required, but also multiple processing steps are needed, resulting in high processing costs and difficulty in guaranteeing dimensional accuracy. There are also some dies in the industry that can continuously and synchronously stamp, but they often have very poor stamping accuracy and lack the guiding function for sheet metal. Even if they have the guiding function, they cannot adapt to the processing of sheet metal of different thicknesses.

[0005] In view of the above-mentioned problems, it is necessary to design a multi-station synchronous stamping die that can be applied to plates of different thicknesses and can guide and straighten the plates. To this end, the applicant has ingeniously designed this technical solution. Utility Model Content

[0006] The objective of this invention is to provide a multi-station synchronous stamping mold, which helps to improve the upper mold mechanism so that it can adaptively guide the sheet metal and improve the processing accuracy when processing sheet metal of different thicknesses, thereby improving stamping efficiency and reducing processing costs.

[0007] The present invention achieves its objective as follows: a multi-station synchronous stamping die includes an upper die mechanism, a lower die mechanism, and a continuous sheet metal disposed between the upper and lower die mechanisms. The sheet metal is placed on the lower die mechanism and moves in a stepping motion. Below the upper die mechanism, from left to right, are spaced a punching punch, a forming punch, a fine blanking punch, a pair of chamfering punches, and a cutting plate. The lower die mechanism forms a punching die and a forming die at positions corresponding to the punching punch, forming punch, fine blanking punch, chamfering punch, and cutting plate, respectively. The upper die mechanism comprises a die, a guide hole, a fine blanking die, a chamfering die, and a cutting seat. The upper die mechanism is characterized by the addition of an adaptive guide pin at the position between the forming punch and the fine blanking punch. The lower end of the adaptive guide pin has a bullet-shaped, gradually curved surface structure. The adaptive guide pin is slidably mounted on the upper die mechanism. Above the adaptive guide pin is a guide pin spring, also located within the upper die mechanism, which provides downward pressure to the adaptive guide pin. The lower end of the adaptive guide pin protrudes from the upper die mechanism.

[0008] In a specific embodiment of this utility model, the upper mold mechanism includes an upper mold frame, an upper mold pad plate disposed below the upper mold frame, an upper mold fixing plate disposed below the upper mold pad plate, an upper mold limiting plate disposed below the upper mold fixing plate, and a stripper plate disposed below the upper mold limiting plate. A set of upper mold fixing plate fixing screws is provided on the upper mold frame, passing through the upper mold frame and the upper mold pad plate sequentially from top to bottom and threadedly connected to the upper mold fixing plate. A set of stripper plate limiting screws is provided on the upper mold frame, passing through the upper mold frame, the upper mold pad plate, the upper mold fixing plate, and the upper mold limiting plate sequentially from top to bottom and threadedly connected to the stripper plate. A pair of forming... The forming punch is fixed by a punch fixing screw, which passes through the upper die holder and the upper die pad from top to bottom and is fixedly connected to a pair of forming punch fixing holes at the upper end of the forming punch. The upper die fixing plate has a punch fixing hole at the position corresponding to the punching punch. The upper die limiting plate and the stripper plate have a punch clearance hole at the position corresponding to the punch fixing hole and a punch clearance hole at the position corresponding to the punch fixing hole. The upper end of the punching punch is clamped and fixed between the punch fixing hole and the upper die pad. The lower end of the punching punch passes through the upper die fixing plate, the punch clearance hole at the upper die limiting plate, and the punch clearance hole at the stripper plate, and protrudes from the lower surface of the stripper plate. The upper die fixing plate has a hole at the position corresponding to the forming punch. A mold fixing plate has a forming punch clearance groove. The upper mold limiting plate has a forming punch clearance opening at a position corresponding to the forming punch. The stripper plate has a forming punch clearance groove at a position corresponding to the forming punch. The lower end of the forming punch passes sequentially through the upper mold fixing plate forming punch clearance groove, the upper mold limiting plate forming punch clearance opening, and the stripper plate forming punch clearance groove, protruding from the lower surface of the stripper plate. The upper mold limiting plate has a guide pin mounting hole at a position corresponding to the adaptive guide pin. The stripper plate has a guide pin clearance hole at a position corresponding to the adaptive guide pin. The adaptive guide pin is slidably disposed within the guide pin mounting hole. The lower end of the die protrudes from the lower surface of the stripper plate through the guide pin clearance hole. A guide pin limiting screw is plugged at the upper end of the guide pin mounting hole. The guide pin spring is disposed between the guide pin limiting screw and the self-adaptive guide pin. The upper die fixing plate has a fine blanking punch fixing hole at the position corresponding to the fine blanking punch. The upper die limiting plate and the stripper plate have a fine blanking punch clearance hole at the position corresponding to the fine blanking punch fixing hole and a fine blanking punch clearance hole at the position corresponding to the fine blanking punch fixing hole. The upper end of the fine blanking punch is clamped and fixed between the fine blanking punch fixing hole and the upper die pad. The lower end of the fine blanking punch passes through the upper die fixing plate, the fine blanking punch clearance hole of the upper die limiting plate, and the fine blanking punch clearance hole of the stripper plate in sequence and protrudes from the lower surface of the stripper plate.The upper die fixing plate has a pair of chamfering punch fixing holes at positions corresponding to the pair of chamfering punches. The stripper plate has a chamfering punch mating hole at a position corresponding to the pair of chamfering punches. The upper end of the chamfering punch is clamped and fixed between the chamfering punch fixing hole and the upper die pad. The lower end of the chamfering punch passes through the upper die fixing plate and the upper die limiting plate in sequence, inserts into the chamfering punch mating hole, and protrudes from the lower surface of the stripper plate. The upper edge of the cutting plate is fixed to the right side of the upper die fixing plate by a set of cutting plate fixing screws. The lower edge of the cutting plate protrudes from the lower surface of the stripper plate. A ring of stripper plate fixing screws is arranged around the upper die limiting plate to connect and fix the stripper plate. A guide post is provided at each of the four corner positions of the upper die fixing plate. The upper end of the guide post is clamped and fixed between the upper die fixing plate and the upper die pad. The lower end of the guide post passes through the upper die fixing plate, the upper die limiting plate, and the stripper plate in sequence and protrudes from the lower surface of the stripper plate.

[0009] In another specific embodiment of this utility model, a set of buffer component mounting holes are evenly provided on the upper mold fixing plate, and a buffer component is respectively provided in the buffer component mounting holes. The upper end of the buffer component passes through the upper mold pad and is fixedly connected to the buffer component fixing screw on the upper mold frame. The lower end of the buffer component abuts against the upper surface of the upper mold limiting plate for buffering.

[0010] In another specific embodiment of this utility model, the stripper plate has a limiting block mounting hole at a position next to a pair of chamfered punch mating holes. A limiting block is inserted into each limiting block mounting hole. The upper end of the limiting block is fixedly connected to a limiting block fixing screw on the upper mold limiting plate. The lower end of the limiting block passes through the stripper plate and protrudes from the lower surface of the stripper plate. The bottom of the lower end of the limiting block forms a limiting block groove.

[0011] In another specific embodiment of this utility model, an upper support column is fixed downward on the front and rear sides of the upper mold frame, and a buffer column is provided downward at each of the four corners of the upper mold frame. The buffer column is slidably mounted on a buffer column connecting seat fixed to the upper mold frame, and a buffer column spring is provided between the buffer column and the buffer column connecting seat.

[0012] In another specific embodiment of this utility model, an upper forming punch limiting plate and a lower forming punch limiting plate are stacked vertically within the forming punch clearance opening of the upper die limiting plate. The upper forming punch limiting plate and the lower forming punch limiting plate each have a clearance groove in their middle portions. The forming punch mates with the clearance grooves of the upper and lower forming punch limiting plates. A forming punch limiting plate fixing screw is provided on the stripper plate at a position corresponding to the upper and lower forming punch limiting plates. The forming punch limiting plate fixing screw passes through the stripper plate, the lower forming punch limiting plate, and is threaded onto the upper forming punch limiting plate from bottom to top. The four corners of the upper forming punch limiting plate are slidably positioned vertically. There is a boss die ejection pin, and a boss die ejection spring is provided above the boss die ejection pin. The boss die ejection spring passes upward through the upper die fixing plate, the upper die pad, and the upper die frame in sequence, and then cooperates with a boss die ejection spring plug on the upper die frame. The boss die ejection spring plug is threadedly fixed to the upper die frame. The lower forming punch limiting plate is provided with a boss die ejection post that slides up and down at the position corresponding to the boss die ejection pin. The upper end of the boss die ejection post abuts against the boss die ejection pin, and the lower end of the boss die ejection post passes downward through the lower forming punch limiting plate and the stripper plate in sequence, and is flush with the lower surface of the stripper plate. A boss die is provided between the boss die ejection post and the stripper plate, and the boss die is sleeved on the corresponding boss die ejection post.

[0013] In a further specific embodiment of this utility model, the lower die mechanism includes a lower die frame, a lower die base disposed above the lower die frame, a lower die pad disposed above the lower die base, and a lower die base disposed above the lower die pad. The punching die, forming die, guide die, fine blanking die, and chamfering die are respectively disposed on the lower die base from left to right. The cutting seat is disposed on the right side of the lower die base and cooperates with the cutting plate for cutting the sheet metal. The lower die base has a forming die cavity at a position corresponding to the forming die. The forming die is disposed in the forming die cavity and fixed with screws to the lower die pad. The chamfering die is disposed at a position corresponding to the chamfering punch and fixed with screws to the lower die pad. A forming die cavity that cooperates with the forming punch is formed above the forming die. The forming die has four corner positions with upward-protruding bosses. A center hole for the forming punch is provided in the center of the forming die. A center hole retaining rod for the forming punch is fixed in the center of the forming punch, protruding downwards. The center hole retaining rod is fitted into the center hole. A guide hole cavity is formed around the guide hole in the lower die holder. An engraving punch is provided on one side of the guide hole cavity in the lower die holder. The engraving punch is fixedly connected to the lower die pad with screws. A fine blanking die cavity is formed around the fine blanking die in the lower die holder. A cutting die cavity is formed upwards between the lower die holder and the cutting seat. A set of guide post holes is provided on the lower die holder.

[0014] In a further specific embodiment of this utility model, a set of lower mold frame plates are fixed at intervals along the length direction on the lower mold frame. The lower mold base is placed on the lower mold frame plates and fixed with screws. A pair of lower support columns are fixed upward on the front and rear sides of the lower mold base. A buffer column guide sleeve is fixed upward at each of the four corners of the lower mold base. A pair of plate guide support blocks are fixed on the left side of the lower mold base. A plate guide baffle is fixed on one side of each plate guide support block. An guide channel is formed between the two plate guide baffles. A discharge slide is fixed on the right side of the lower mold base.

[0015] In another specific embodiment of this utility model, a cutting buffer seat is slidably provided on the lower mold base at the position to the right of the cutting seat. A pair of cutting buffer seat screws that are slidably connected to the lower mold base are fixed below the cutting buffer seat. A cutting buffer seat spring is sleeved on the cutting buffer seat screw. The upper end of the cutting buffer seat spring abuts against the cutting buffer seat, and the lower end of the cutting buffer seat spring abuts against the lower mold base. A cutting buffer seat guide block that is fixed to the lower mold base is provided on the front and rear sides of the cutting buffer seat, and the cutting buffer seat and the cutting buffer seat guide block are in contact.

[0016] In another specific embodiment of this utility model, the lower die base has two rows of sheet metal guide pillars spaced along its length at positions on the front and rear sides of the punching die, forming die, guide hole, fine blanking die, and chamfering die. The lower die base has a sheet metal guide pillar hole at the position corresponding to the sheet metal guide pillar. A sheet metal guide pillar hole spring is provided in each of the sheet metal guide pillar holes. The lower ends of the sheet metal guide pillars are respectively positioned above the sheet metal guide pillar hole springs. The upper ends of the sheet metal guide pillars pass through the lower die pad and the lower die base in sequence and protrude from the upper surface of the lower die base.

[0017] The present invention, by adopting the above-described structure, has the following beneficial effects: Because it employs a multi-station continuous synchronous stamping structure achieved through step-feeding between the upper and lower die mechanisms, it accomplishes the task of integrating multiple stamping processes for continuous synchronous stamping. Furthermore, it can adjust different punches and dies according to different thicknesses and engraving / chamfering styles, greatly improving stamping efficiency and reducing processing costs. Because it uses a bullet-shaped gradient curved surface adaptive guide pin, when the thickness of the sheet metal changes, causing a change in the size of the center hole, the adaptive guide pin can adapt to the size of the center hole on the sheet metal through the bullet-shaped gradient curved surface. This effectively avoids the situation where the adaptive guide pin is ineffective when it is smaller or larger than the center hole, thus adapting to the processing of sheets of different thicknesses. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the usage state structure of an embodiment of the present utility model; Figure 2 This is a three-dimensional structural diagram of the upper mold mechanism described in this utility model; Figure 3 This is a three-dimensional structural diagram of the lower mold mechanism described in this utility model.

[0019] In the diagram: 1. Upper die mechanism, 11. Upper die holder, 111. Upper die fixing plate fixing screw, 112. Stripper plate limiting screw, 113. Forming punch fixing screw, 114. Boss die ejection spring plug, 115. Buffer assembly fixing screw, 116. Upper support column, 12. Upper die fixing plate, 121. Punching punch fixing hole, 122. Upper die fixing plate forming punch relief groove, 123. Fine blanking punch fixing hole, 124. Chamfering punch fixing hole, 125. Buffer assembly mounting hole, 1251. Buffer assembly, 126. Guide post, 13. Upper die limiting plate; 131. Punch relief hole for upper die limiting plate; 132. Forming punch relief opening for upper die limiting plate; 1321. Upper forming punch limiting plate; 13211. Relief groove for upper forming punch limiting plate; 13212. Boss die ejection pin; 13213. Boss die ejection spring; 1322. Lower forming punch limiting plate; 13221. Relief groove for lower forming punch limiting plate; 13222. Boss die ejection post; 133. Guide pin mounting hole; 134. Fine blanking punch relief hole for upper die limiting plate; 135. Limiting block fixing screw. 136. Stripper plate fixing screw; 14. Stripper plate; 141. Stripper plate punching punch clearance hole; 142. Stripper plate forming punch clearance groove; 143. Guide pin clearance hole; 144. Stripper plate fine blanking punch clearance hole; 145. Limit block mounting hole; 1451. Limit block; 14511. Limit block groove; 146. Chamfering punch mating hole; 147. Forming punch limit plate fixing screw; 148. Boss die; 15. Buffer pillar; 151. Buffer pillar connecting seat; 152. Buffer pillar spring; 16. Upper die pad; 2. Lower die mechanism. 21. Lower die holder; 211. Lower die holder plate; 22. Lower die base; 221. Lower support column; 222. Buffer column guide sleeve; 223. Sheet metal guide support block; 224. Sheet metal guide baffle; 2241. Guide channel; 225. Discharge slide; 226. Sheet metal guide post hole; 2261. Sheet metal guide post hole spring; 23. Lower die pad; 24. Lower die base; 241. Punching die; 242. Forming die cavity; 243. Guide hole; 2431. Guide hole die cavity; 244. Engraving punch; 245. Fine blanking die; 2451. 246. Fine blanking die cavity; 247. Chamfering die; 248. Cutting die cavity; 249. Guide post hole; 25. Cutting seat; 26. Cutting buffer seat; 261. Cutting buffer seat screw; 262. Cutting buffer seat spring; 263. Cutting buffer seat guide block; 27. Forming die; 271. Forming die cavity; 272. Boss punch; 273. Forming punch center hole retaining rod clearance hole; 28. Sheet metal guide post; 3. Punching punch; 4. Forming punch; 41. Forming punch fixing hole; 42. Forming punch center hole retaining rod; 5. Self-adaptive guide pin; 51. Guide pin spring; 52. Guide pin limit screw; 6. Fine blanking punch; 7. Chamfering punch; 8. Cutting plate; 81. Cutting plate fixing screw; 10.Sheet metal, 101. Center hole, 102. Cross-shaped groove, 103. Boss, 104. Chamfer, 105. Cut edge; 20. Part. Detailed Implementation

[0020] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. However, the description of the embodiments is not a limitation on the technical solution. Any formal but not substantive changes made based on the concept of this utility model should be considered within the protection scope of this utility model.

[0021] In the following description, all directional or positional concepts involving up, down, left, right, front, and back are based on... Figure 1 The positions shown are for reference only and should not be construed as a particular limitation on the technical solutions provided by this utility model.

[0022] Please see Figure 1 and combined Figure 2 and Figure 3 This utility model relates to a multi-station synchronous stamping mold, including an upper mold mechanism 1, a lower mold mechanism 2, and a continuous sheet metal 10 disposed between the upper mold mechanism 1 and the lower mold mechanism 2. The sheet metal 10 is placed on the lower mold mechanism 2 and moves stepwise. The lower part of the upper mold mechanism 1 is provided with a punching punch 3, a forming punch 4, a fine blanking punch 6, a pair of chamfering punches 7, and a cutting plate 8 arranged from left to right. The lower mold mechanism 2 forms a punching die 241, a detachable and replaceable forming die 27, a guide hole 243, a detachable and replaceable fine blanking die 245, a chamfering die 246, and a cutting seat 25 at the positions corresponding to the punching punch 3, the forming punch 4, the fine blanking punch 6, the chamfering punch 7, and the cutting plate 8, respectively.

[0023] The technical innovation of this utility model is as follows: an adaptive guide pin 5 is added to the upper mold mechanism 1 at the position between the forming punch 4 and the fine blanking punch 6. The lower end of the adaptive guide pin 5 has a bullet-shaped gradually curved surface structure. The adaptive guide pin 5 is slidably mounted on the upper mold mechanism 1. A guide pin spring 51, which is also set in the upper mold mechanism 1, is set above the adaptive guide pin 5. The guide pin spring 51 provides downward pressure for the adaptive guide pin 5. The lower end of the adaptive guide pin 5 protrudes from the upper mold mechanism 1.

[0024] Please see Figure 2The aforementioned upper mold mechanism 1 includes an upper mold frame 11, an upper mold pad 16 disposed below the upper mold frame 11, an upper mold fixing plate 12 disposed below the upper mold pad 16, an upper mold limiting plate 13 disposed below the upper mold fixing plate 12, and a stripper plate 14 disposed below the upper mold limiting plate 13. A set of upper mold fixing plate fixing screws 111 are provided on the upper mold frame 11, and these screws pass through the upper mold frame 11, the upper mold pad 16, and the upper mold fixing plate 12 in a threaded connection from top to bottom. A set of stripper plate limiting screws 112 are provided on the upper mold frame 11, and these screws pass through the upper mold frame 11, the upper mold pad 16, the upper mold fixing plate 12, the upper mold limiting plate 13, and the stripper plate in a threaded connection from top to bottom. 14. Threaded connection: The aforementioned upper die holder 11 is provided with a pair of forming punch fixing screws 113 at the position corresponding to the forming punch 4. The aforementioned forming punch fixing screws 113 pass through the upper die holder 11 and the upper die pad 16 from top to bottom and are fixedly connected to a pair of forming punch fixing holes 41 at the upper end of the forming punch 4. The aforementioned upper die fixing plate 12 is provided with a punch fixing hole 121 at the position corresponding to the punching punch 3. The aforementioned upper die limiting plate 13 and stripper plate 14 are provided with an upper die limiting plate punching punch clearance hole 131 and a stripper plate punching punch clearance hole 141 at the position corresponding to the punching punch fixing hole 121. The upper end of the aforementioned punching punch 3 is clamped and fixed between the punching punch fixing hole 121 and the upper die pad 16. The aforementioned punching punch 3 The lower end of the forming punch 4 passes sequentially through the upper die fixing plate 12, the upper die limiting plate punching punch clearance hole 131, and the stripper plate punching punch clearance hole 141, and protrudes from the lower surface of the stripper plate 14. The upper die fixing plate 12 has an upper die fixing plate forming punch clearance groove 122 at the position corresponding to the forming punch 4. The upper die limiting plate 13 has an upper die limiting plate forming punch clearance opening 132 at the position corresponding to the forming punch 4. The stripper plate 14 has a stripper plate forming punch clearance groove 142 at the position corresponding to the forming punch 4. The lower end of the forming punch 4 passes sequentially through the upper die fixing plate forming punch clearance groove 122, the upper die limiting plate forming punch clearance opening 132, and the stripper plate forming punch clearance groove 142, and protrudes from the lower surface of the stripper plate 14. The aforementioned upper die limiting plate 13 has a guide pin mounting hole 133 at the position corresponding to the adaptive guide pin 5, and the aforementioned stripper plate 14 has a guide pin clearance hole 143 at the position corresponding to the adaptive guide pin 5. The aforementioned adaptive guide pin 5 is slidably disposed in the guide pin mounting hole 133, and the lower end of the aforementioned adaptive guide pin 5 passes through the guide pin clearance hole 143 and protrudes from the lower surface of the stripper plate 14. A guide pin limiting screw 52 is plugged at the upper end of the aforementioned guide pin mounting hole 133, and the aforementioned guide pin spring 51 is disposed between the guide pin limiting screw 52 and the adaptive guide pin 5. The aforementioned upper die fixing plate 12 has a fine blanking punch fixing hole 123 at the position corresponding to the fine blanking punch 6.The aforementioned upper die limiting plate 13 and stripper plate 14 have an upper die limiting plate fine blanking punch clearance hole 134 and a stripper plate fine blanking punch clearance hole 144 at positions corresponding to the fine blanking punch fixing hole 123. The upper end of the aforementioned fine blanking punch 6 is clamped and fixed between the fine blanking punch fixing hole 123 and the upper die pad 16. The lower end of the aforementioned fine blanking punch 6 passes through the upper die fixing plate 12, the upper die limiting plate fine blanking punch clearance hole 134 and the stripper plate fine blanking punch clearance hole 144 in sequence and protrudes from the lower surface of the stripper plate 14. The aforementioned upper die fixing plate 12 has a pair of chamfering punch fixing holes 124 at positions corresponding to a pair of chamfering punches 7. The aforementioned stripper plate 14 has a chamfering punch mating hole 146 at positions corresponding to a pair of chamfering punches 7. The upper end of the aforementioned chamfering punch 7 is clamped and fixed in the chamfering punch fixing hole 124. Between the upper mold base plate 16 and the upper mold pad plate 16, the lower end of the aforementioned chamfering punch 7 passes sequentially through the upper mold fixing plate 12 and the upper mold limiting plate 13, and is inserted into the chamfering punch mating hole 146 and protrudes from the lower surface of the stripper plate 14. The upper edge of the aforementioned cutting plate 8 is fixed to the right side of the upper mold fixing plate 12 by a set of cutting plate fixing screws 81, and the lower edge of the aforementioned cutting plate 8 protrudes from the lower surface of the stripper plate 14. A ring of stripper plate fixing screws 136 is provided around the aforementioned upper mold limiting plate 13 to connect and fix the stripper plate 14. A guide post 126 is provided at each of the four corner positions of the aforementioned upper mold fixing plate 12. The upper end of the aforementioned guide post 126 is clamped and fixed between the upper mold fixing plate 12 and the upper mold base plate 16, and the lower end of the aforementioned guide post 126 passes sequentially through the upper mold fixing plate 12, the upper mold limiting plate 13 and the stripper plate 14 and protrudes from the lower surface of the stripper plate 14.

[0025] Furthermore, a set of buffer component mounting holes 125 are evenly provided on the aforementioned upper mold fixing plate 12. A buffer component 1251 is respectively provided in the aforementioned buffer component mounting holes 125. The upper end of the aforementioned buffer component 1251 passes through the upper mold pad 16 and is fixedly connected to the buffer component fixing screw 115 on the upper mold frame 11. The lower end of the aforementioned buffer component 1251 abuts against the upper surface of the upper mold limiting plate 13 for buffering.

[0026] Furthermore, the aforementioned stripper plate 14 has a limiting block mounting hole 145 respectively at a position next to a pair of chamfered punch mating holes 146. A limiting block 1451 is inserted into the aforementioned limiting block mounting hole 145 respectively. The upper end of the aforementioned limiting block 1451 is fixedly connected to a limiting block fixing screw 135 on the upper mold limiting plate 13. The lower end of the aforementioned limiting block 1451 passes through the stripper plate 14 and protrudes from the lower surface of the stripper plate 14. The bottom of the lower end of the aforementioned limiting block 1451 forms a limiting block groove 14511.

[0027] Furthermore, an upper support column 116 is fixed downward on the front and rear sides of the aforementioned upper mold frame 11, and a buffer column 15 is provided downward at each of the four corners of the aforementioned upper mold frame 11. The aforementioned buffer column 15 is slidably mounted on a buffer column connecting seat 151 fixed to the upper mold frame 11, and a buffer column spring 152 is provided between the aforementioned buffer column 15 and the buffer column connecting seat 151.

[0028] Furthermore, an upper forming punch limiting plate 1321 and a lower forming punch limiting plate 1322 are stacked vertically within the aforementioned upper die limiting plate forming punch relief opening 132. An upper forming punch limiting plate relief groove 13211 and a lower forming punch limiting plate relief groove 13221 are respectively formed in the middle portions of the aforementioned upper forming punch limiting plate 13211 and lower forming punch limiting plate relief groove 13221. The aforementioned forming punch 4 interacts with the upper forming punch limiting plate relief groove 13211 and the lower forming punch limiting plate relief groove 13221. In conjunction with this, the aforementioned stripper plate 14 is provided with a forming punch limiting plate fixing screw 147 at the position corresponding to the upper forming punch limiting plate 1321 and the lower forming punch limiting plate 1322. The aforementioned forming punch limiting plate fixing screw 147 passes through the stripper plate 14 and the lower forming punch limiting plate 1322 sequentially from bottom to top and is threaded to the upper forming punch limiting plate 1321. The aforementioned upper forming punch limiting plate 1321 has a boss die release pin 13212 that slides up and down at each of the four corners. A boss mold release spring 13213 is provided above the boss mold release pin 13212. The aforementioned boss mold release spring 13213 passes upward sequentially through the upper mold fixing plate 12, the upper mold pad plate 16, and the upper mold frame 11, and then cooperates with a boss mold release spring plug 114 on the upper mold frame 11. The aforementioned boss mold release spring plug 114 is threadedly fixed to the upper mold frame 11. The aforementioned lower forming punch limiting plate 1322 slides up and down at the position corresponding to the boss mold release pin 13212. A boss die ejector pin 13222 is dynamically provided. The upper end of the aforementioned boss die ejector pin 13222 abuts against the boss die ejector pin 13212. The lower end of the aforementioned boss die ejector pin 13222 passes downward through the lower forming punch limiting plate 1322 and the stripper plate 14 and is flush with the lower surface of the stripper plate 14. A boss die 148 is provided between the aforementioned boss die ejector pin 13222 and the stripper plate 14. The aforementioned boss die 148 is sleeved on the corresponding boss die ejector pin 13222.

[0029] Please see Figure 2 and Figure 3The aforementioned lower die mechanism 2 includes a lower die frame 21, a lower die base 22 disposed above the lower die frame 21, a lower die pad 23 disposed above the lower die base 22, and a lower die base 24 disposed above the lower die pad 23. The aforementioned punching die 241, forming die 27, guide hole 243, fine blanking die 245, and chamfering die 246 are respectively disposed on the lower die base 24 from left to right. The aforementioned cutting seat 25 is disposed on the right side of the lower die base 24 and cooperates with the cutting plate 8 to cut the plate 10. The aforementioned lower die base 24 is located on the corresponding A forming die cavity 242 is formed at the position of the forming die 27. The forming die 27 is disposed in the forming die cavity 242 and fixed with screws to the lower die plate 23. The chamfering die 246 is disposed at the position corresponding to the chamfering punch 7 and fixed with screws to the lower die plate 23. A forming die cavity 271 is formed above the forming die 27 to cooperate with the forming punch 4. Boss punches 272 are respectively provided at the four corner positions of the forming die 27. A center hole retaining rod for the forming punch is formed in the center of the forming die 27. A center hole 273 is provided. A center hole retaining rod 42, protruding downwards from the center of the forming punch 4, is fixed at the center of the forming punch 4. The center hole retaining rod 42 is fitted into the center hole 273. The upper end of the center hole retaining rod 42 is clamped and fixed between the forming punch 4 and the upper die plate 16, while the lower end of the center hole retaining rod 4 passes through the forming punch 4 and protrudes from its lower surface. The lower die base 24 forms a guide around the guide recess 243. The positive concave cavity 2431 is provided. The aforementioned lower mold base 24 is provided with an engraving punch 244 at a position next to the positive concave cavity 2431. The engraving punch 244 is fixedly connected to the lower mold pad 23 with screws. The aforementioned lower mold base 24 forms a fine blanking cavity 2451 around the fine blanking die 245. The aforementioned lower mold base 24 and the cutting seat 25 form a cutting cavity 247 upward. The aforementioned lower mold base 24 is provided with a set of guide post holes 248. The aforementioned guide post holes 248 and guide post 126 cooperate with each other to slide.

[0030] Furthermore, a set of lower mold base plates 211 are fixed at intervals along the length of the aforementioned lower mold base 21. The aforementioned lower mold base 22 is placed on the lower mold base plates 211 and fixed with screws. A pair of lower support columns 221 are fixed upward along the front and rear sides of the aforementioned lower mold base 22. A buffer column guide sleeve 222 is fixed upward at each of the four corners of the aforementioned lower mold base 22. A pair of plate guide support blocks 223 are fixed on the left side of the aforementioned lower mold base 22 located on the lower mold base 24. A plate guide baffle 224 is fixed on one side of the support block 223, and an inlet channel 2241 is formed between the two plate guide baffles 224. A discharge slide 225 is fixed on the right side of the lower mold base 22. The lower support column 221 and the upper support column 116 cooperate and abut against each other in the mold closing state. The buffer column guide sleeve 222 and the buffer column 15 cooperate in the mold closing state. After the buffer column 15 is inserted into the buffer column guide sleeve 222, the buffer column spring 152 is compressed as the mold closes.

[0031] Furthermore, a cutting buffer seat 26 is slidably provided on the lower mold base 22 at the position to the right of the cutting seat 25. A pair of cutting buffer seat screws 261 are fixed below the cutting buffer seat 26 and are slidably connected to the lower mold base 22. A cutting buffer seat spring 262 is sleeved on the cutting buffer seat screws 261. The upper end of the cutting buffer seat spring 262 abuts against the cutting buffer seat 26, and the lower end of the cutting buffer seat spring 262 abuts against the lower mold base 22. A cutting buffer seat guide block 263 fixed to the lower mold base 22 is provided on the front and rear sides of the cutting buffer seat 26. The cutting buffer seat 26 and the cutting buffer seat guide block 263 are close to each other. When the cutting plate 8 cuts the plate 10, the cutting buffer seat 26 supports the plate 10 upwards to avoid the plate 10 from sudden stress change, which may cause edge instability, plastic collapse, and edge collapse defects. As is well known, the thicker the aforementioned plate 10 is, the greater the stress released during cutting, and the easier it is to cause edge collapse. The cutting buffer seat 26 not only suppresses the occurrence of edge collapse, but also helps to complete automatic unloading by pushing the cutting buffer seat 26 upward through the aforementioned cutting buffer seat spring 262.

[0032] Furthermore, the aforementioned lower die base 22 has two rows of sheet metal guide pillars 28 spaced along its length at positions on the front and rear sides of the punching die 241, forming die 27, guide hole 243, fine blanking die 245 and chamfering die 246. The aforementioned lower die base 22 has a sheet metal guide pillar hole 226 at the position corresponding to the sheet metal guide pillar 28. A sheet metal guide pillar hole spring 2261 is provided in each of the aforementioned sheet metal guide pillar holes 226. The lower ends of the aforementioned sheet metal guide pillars 28 are respectively positioned above the sheet metal guide pillar hole springs 2261. The upper ends of the aforementioned sheet metal guide pillars 28 pass through the lower die pad 23 and the lower die base 24 in sequence and protrude from the upper surface of the lower die base 24.

[0033] Please continue reading. Figures 1 to 3 During processing, the aforementioned upper die mechanism 1 reciprocates up and down under the action of the stamping press and closes with the lower die mechanism 2 to complete the stamping of the sheet metal 10. The aforementioned sheet metal 10 enters from the inlet channel 2241 under the action of the power source of the external conveying mechanism and moves stepwise from left to right (feeding). During each interval of the up and down reciprocating motion, the aforementioned upper die mechanism 1 moves the sheet metal 10 one station to the right. The aforementioned sheet metal 10 is stamped with a center hole 101 at the position of the punching punch 3. The aforementioned sheet metal 10 is stamped with a downwardly protruding star-shaped groove 102 under the cooperation of the forming punch 4 and the forming die cavity 271. During the stamping process, the aforementioned forming punch... The center hole retaining rod 42 passes downward through the center hole 101 that has been stepped in and inserts into the center hole retaining rod clearance hole 273 of the forming punch, thereby preventing the center hole 101 from being damaged by the cross groove 102. The aforementioned sheet metal 10 is stamped with an upwardly protruding boss 103 under the cooperation of the boss punch 272 and the boss die 148. The boss 103 is affected by the thickness of the aforementioned sheet metal 10, and the thinner the boss 103, the higher the protrusion height. During the upward protrusion process, the boss 103 pushes the aforementioned boss die ejector pin 13222 to slide upward and squeeze the boss die ejector pin 13212 to compress the boss die ejector spring 13213 until... The upper end of the aforementioned boss die ejector pin 13222 is pushed against the upper forming punch limiting plate 1321, thereby effectively limiting the height of the boss 103. After the stamping is completed, the aforementioned boss die ejector spring 13213 releases its elastic force to push the boss die ejector pin 13212 downward to push the boss die ejector pin 13222. The aforementioned boss die ejector pin 13222 pushes the boss 103 away from the boss die 148. The aforementioned adaptive guide pin 5 is inserted into the center hole 101 that has been stepped in to correct the position of the sheet metal 10. At the same time, the aforementioned engraving punch 244 engraves numbers or patterns on the lower surface of the sheet metal 10. The aforementioned sheet metal 10 is then finely stamped. With the cooperation of punch 6 and fine blanking die 245, the center hole 101 that comes step by step is finely stamped to ensure the size of the center hole 101. The aforementioned chamfering punch 7 and chamfering die 246 cooperate to stamp chamfers 104 on the front and rear sides of the sheet metal 10. The aforementioned boss 103 is clamped in the limit block groove 14511 when passing the limit block 1451 to ensure that the position does not shift. The aforementioned cutting plate 8 and cutting seat 25 cooperate to cut the chamfer 104 that comes step by step, which is the cutting edge 105, thereby completing the stamping process of the entire part 20. The cut part 20 finally slides out from the discharge slide 225.

[0034] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this utility model. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

[0035] In summary, the technical solution provided by this utility model makes up for the shortcomings of the prior art, successfully completes the utility model task, and faithfully realizes the technical effects described by the applicant in the above technical effect column.

Claims

1. A multi-station synchronous stamping die, comprising an upper die mechanism (1), a lower die mechanism (2), and a continuous sheet metal (10) disposed between the upper die mechanism (1) and the lower die mechanism (2), the sheet metal (10) being placed on the lower die mechanism (2) and moving stepwise; the upper die mechanism (1) having a punching punch (3), a forming punch (4), a fine blanking punch (6), a pair of chamfering punches (7), and a cutting plate (8) spaced apart from left to right below it; the lower die mechanism (2) having a punching die (241), a forming die (27), a guide hole (243), a fine blanking die (245), a chamfering die (246), and a cutting seat (25) respectively formed at positions corresponding to the punching punch (3), the forming punch (4), the fine blanking punch (6), the chamfering punch (7), and the cutting plate (8), characterized in that: An adaptive guide pin (5) is added at the position between the forming punch (4) and the fine blanking punch (6) in the upper die mechanism (1). The lower end of the adaptive guide pin (5) has a bullet-shaped gradient curved surface structure. The adaptive guide pin (5) is slidably mounted on the upper die mechanism (1). A guide pin spring (51) is also set above the adaptive guide pin (5) and is also set in the upper die mechanism (1). The guide pin spring (51) provides downward pressure for the adaptive guide pin (5). The lower end of the adaptive guide pin (5) protrudes from the upper die mechanism (1).

2. The mold for multi-station synchronous stamping forming according to claim 1, characterized in that: The upper mold mechanism (1) includes an upper mold frame (11), an upper mold pad (16) disposed below the upper mold frame (11), an upper mold fixing plate (12) disposed below the upper mold pad (16), an upper mold limiting plate (13) disposed below the upper mold fixing plate (12), and a stripper plate (14) disposed below the upper mold limiting plate (13). A set of upper mold fixing plate fixing screws (111) is provided on the upper mold frame (11). The upper mold fixing plate fixing screws (111) pass through the upper mold frame (11), the upper mold pad (16), and are threadedly connected to the upper mold fixing plate (12) from top to bottom. A set of stripper plate limiting screws (112) is provided on the upper mold frame (11). The stripper plate limiting screws (112) extend from top to bottom. The upper die frame (11), upper die pad (16), upper die fixing plate (12), upper die limiting plate (13) and stripper plate (14) are threaded together. The upper die frame (11) is provided with a pair of forming punch fixing screws (113) at the position corresponding to the forming punch (4). The forming punch fixing screws (113) pass through the upper die frame (11) and upper die pad (16) from top to bottom and are fixedly connected to a pair of forming punch fixing holes (41) at the upper end of the forming punch (4). The upper die fixing plate (12) is provided with a punch fixing hole (121) at the position corresponding to the punching punch (3). The upper die limiting plate (13) and stripper plate (14) are provided with holes at the positions corresponding to the punch fixing hole (121). There is an upper die limiting plate punching punch clearance hole (131) and an ejector plate punching punch clearance hole (141). The upper end of the punching punch (3) is clamped and fixed between the punching punch fixing hole (121) and the upper die pad (16). The lower end of the punching punch (3) passes through the upper die fixing plate (12), the upper die limiting plate punching punch clearance hole (131) and the ejector plate punching punch clearance hole (141) in sequence and protrudes from the lower surface of the ejector plate (14). The upper die fixing plate (12) has an upper die fixing plate forming punch clearance groove (122) at the position corresponding to the forming punch (4). The upper die limiting plate (13) has an upper die limiting plate forming punch clearance opening (132) at the position corresponding to the forming punch (4). The stripper plate (14) has a stripper plate forming punch clearance groove (142) at a position corresponding to the forming punch (4). The lower end of the forming punch (4) passes through the upper die fixing plate forming punch clearance groove (122), the upper die limiting plate forming punch clearance opening (132), and the stripper plate forming punch clearance groove (142) in sequence and protrudes from the lower surface of the stripper plate (14). The upper die limiting plate (13) has a guide pin mounting hole (133) at a position corresponding to the adaptive guide pin (5). The stripper plate (14) has a guide pin clearance hole (143) at a position corresponding to the adaptive guide pin (5). The adaptive guide pin (5) is slidably disposed in the guide pin mounting hole (133).The lower end of the adaptive guide pin (5) protrudes from the lower surface of the stripper plate (14) through the guide pin clearance hole (143). A guide pin limiting screw (52) is plugged at the upper end of the guide pin mounting hole (133). The guide pin spring (51) is disposed between the guide pin limiting screw (52) and the adaptive guide pin (5). The upper die fixing plate (12) has a fine blanking punch fixing hole (123) at the position corresponding to the fine blanking punch (6). The upper die limiting plate (13) and the stripper plate (14) are located at the positions corresponding to the fine blanking punch fixing hole (123). A fine blanking punch clearance hole (134) for an upper die limiting plate and a fine blanking punch clearance hole (144) for a stripper plate are provided at the position. The upper end of the fine blanking punch (6) is clamped and fixed between the fine blanking punch fixing hole (123) and the upper die pad (16). The lower end of the fine blanking punch (6) passes through the upper die fixing plate (12), the fine blanking punch clearance hole (134) for the upper die limiting plate and the fine blanking punch clearance hole (144) for the stripper plate in sequence and protrudes from the lower surface of the stripper plate (14). The upper die fixing plate (12) is provided with a pair of chamfering punch fixing holes at the positions corresponding to a pair of chamfering punches (7). 124), the stripper plate (14) has a chamfering punch mating hole (146) at the position corresponding to a pair of chamfering punches (7). The upper end of the chamfering punch (7) is clamped and fixed between the chamfering punch fixing hole (124) and the upper die pad (16). The lower end of the chamfering punch (7) passes through the upper die fixing plate (12) and the upper die limiting plate (13) in sequence, and is inserted into the chamfering punch mating hole (146) and protrudes from the lower surface of the stripper plate (14). The upper edge of the cutting plate (8) is fixed to the right side of the upper die fixing plate (12) by a set of cutting plate fixing screws (81). The lower edge of the cutting plate (8) protrudes from the lower surface of the unloading plate (14). A ring of unloading plate fixing screws (136) is provided around the upper mold limiting plate (13) to connect and fix the unloading plate (14). A guide post (126) is provided at each of the four corner positions of the upper mold fixing plate (12). The upper end of the guide post (126) is clamped and fixed between the upper mold fixing plate (12) and the upper mold pad (16). The lower end of the guide post (126) passes sequentially through the upper mold fixing plate (12), the upper mold limiting plate (13), and the unloading plate (14), and protrudes from the lower surface of the unloading plate (14).

3. The mold for multi-station synchronous stamping according to claim 2, characterized in that: A set of buffer component mounting holes (125) are evenly provided on the upper mold fixing plate (12). A buffer component (1251) is respectively provided in the buffer component mounting hole (125). The upper end of the buffer component (1251) passes through the upper mold pad (16) and is fixedly connected to the buffer component fixing screw (115) on the upper mold frame (11). The lower end of the buffer component (1251) abuts against the upper surface of the upper mold limiting plate (13) for buffering.

4. The mold for multi-station synchronous stamping forming according to claim 2, characterized in that: The stripper plate (14) has a limiting block mounting hole (145) on each side of a pair of chamfered punch mating holes (146). A limiting block (1451) is inserted into each limiting block mounting hole (145). The upper end of the limiting block (1451) is fixedly connected to a limiting block fixing screw (135) on the upper mold limiting plate (13). The lower end of the limiting block (1451) passes through the stripper plate (14) and protrudes from the lower surface of the stripper plate (14). The bottom of the lower end of the limiting block (1451) forms a limiting block groove (14511).

5. The mold for multi-station synchronous stamping according to claim 2, characterized in that: The upper mold frame (11) has an upper support column (116) fixed downward on the front and rear sides respectively. A buffer column (15) is provided downward at each of the four corners of the upper mold frame (11). The buffer column (15) is slidably mounted on a buffer column connecting seat (151) fixed to the upper mold frame (11). A buffer column spring (152) is provided between the buffer column (15) and the buffer column connecting seat (151).

6. The mold for multi-station synchronous stamping according to claim 2, characterized in that: An upper forming punch limiting plate (1321) and a lower forming punch limiting plate (1322) are stacked vertically within the forming punch relief opening (132) of the upper die limiting plate. An upper forming punch limiting plate relief groove (13211) and a lower forming punch limiting plate relief groove (13221) are respectively formed in the middle of the upper forming punch limiting plate (13211) and the lower forming punch limiting plate relief groove (13221). The forming punch (4) cooperates with the upper forming punch limiting plate relief groove (13211) and the lower forming punch limiting plate relief groove (13221). The stripper plate (14) is provided with a forming punch limiting plate fixing screw (147) at the position corresponding to the upper forming punch limiting plate (1321) and the lower forming punch limiting plate (1322). The forming punch limiting plate fixing screw (147) passes through the stripper plate (14) and the lower forming punch limiting plate (1322) from bottom to top and is threaded to the upper forming punch limiting plate (1321). At the four corners of the upper forming punch limiting plate (1321), a boss die release pin (13212) is provided, which slides up and down. A boss die release spring (13213) is provided above (13212). The boss die release spring (13213) passes through the upper die fixing plate (12), the upper die pad plate (16), and the upper die frame (11) in sequence and then cooperates with a boss die release spring plug (114) on the upper die frame (11). The boss die release spring plug (114) is threadedly fixed to the upper die frame (11). The lower forming punch limiting plate (1322) is slidably set up and down at the position corresponding to the boss die release pin (13212). There is a boss die ejector pin (13222), the upper end of which abuts against the boss die ejector pin (13212), and the lower end of which passes through the lower forming punch limiting plate (1322) and the stripper plate (14) in sequence and is flush with the lower surface of the stripper plate (14). A boss die (148) is provided between the boss die ejector pin (13222) and the stripper plate (14), and the boss die (148) is sleeved on the corresponding boss die ejector pin (13222).

7. The mold for multi-station synchronous stamping forming according to claim 1, characterized in that: The lower die mechanism (2) includes a lower die frame (21), a lower die base (22) disposed above the lower die frame (21), a lower die pad (23) disposed above the lower die base (22), and a lower die base (24) disposed above the lower die pad (23). The punching die (241), forming die (27), guide hole (243), fine blanking die (245), and chamfering die (246) are respectively disposed on the lower die base (24) from left to right. The cutting seat (25) is disposed on the right side of the lower die base (24) and... The lower mold base (24) is used in conjunction with the cutting plate (8) to cut the plate (10). A forming cavity (242) is formed at a position corresponding to the forming die (27). The forming die (27) is disposed within the forming cavity (242) and fixed with screws to the lower mold base (23). The chamfering die (246) is disposed at a position corresponding to the chamfering punch (7) and fixed with screws to the lower mold base (23). A forming cavity (271) is formed above the forming die (27) to cooperate with the forming punch (4). The forming die (27) has four corners with upward-protruding bosses (272). The forming die (27) has a center hole retaining rod clearance hole (273) in the center. The forming die (4) has a center hole retaining rod (42) that protrudes downward from the forming die (4). The center hole retaining rod (42) of the forming die (4) is fitted into the center hole retaining rod clearance hole (273). The lower die base (24) forms a guide hole die around the guide hole (243). The lower mold base (24) has an engraving punch (244) located on one side of the guide hole cavity (2431). The engraving punch (244) is fixedly connected to the lower mold pad (23) with screws. The lower mold base (24) forms a fine blanking cavity (2451) around the fine blanking die (245). The lower mold base (24) and the cutting seat (25) form a cutting cavity (247) upward. A set of guide post holes (248) are opened on the lower mold base (24).

8. The mold for multi-station synchronous stamping according to claim 7, characterized in that: A set of lower mold frame plates (211) are fixed at intervals along the length direction on the lower mold frame (21). The lower mold base (22) is placed on the lower mold frame plate (211) and fixed with screws. A pair of lower support columns (221) are fixed upward on the front and rear sides of the lower mold base (22). A buffer column guide sleeve (222) is fixed upward at each of the four corners of the lower mold base (22). A pair of plate guide support blocks (223) are fixed on the lower mold base (22) at the left side of the lower mold base (24). A plate guide baffle (224) is fixed on one side of each plate guide support block (223). An guide channel (2241) is formed between the two plate guide baffles (224). A discharge slide (225) is fixed on the right side of the lower mold base (22).

9. The mold for multi-station synchronous stamping according to claim 7, characterized in that: The lower die base (22) is located on the right side of the cutting base (25) and a cutting buffer base (26) is slidably provided. A pair of cutting buffer base screws (261) that are slidably connected to the lower die base (22) are fixed below the cutting buffer base (26). A cutting buffer base spring (262) is sleeved on the cutting buffer base screw (261). The upper end of the cutting buffer base spring (262) abuts against the cutting buffer base (26), and the lower end of the cutting buffer base spring (262) abuts against the lower die base (22). A cutting buffer base guide block (263) that is fixed to the lower die base (22) is provided on the front and rear sides of the cutting buffer base (26). The cutting buffer base (26) and the cutting buffer base guide block (263) are in close contact.

10. A multi-station synchronous stamping die according to claim 7, characterized in that: The lower die base (22) has two rows of sheet metal guide posts (28) spaced along its length at positions on the front and rear sides of the punching die (241), forming die (27), guide hole (243), fine blanking die (245) and chamfering die (246). The lower die base (22) has a sheet metal guide post hole (226) at a position corresponding to the sheet metal guide post (28). A sheet metal guide post hole spring (2261) is provided in each of the sheet metal guide post holes (226). The lower ends of the sheet metal guide posts (28) are respectively positioned above the sheet metal guide post hole springs (2261). The upper ends of the sheet metal guide posts (28) pass through the lower die pad (23) and the lower die base (24) in sequence and protrude from the upper surface of the lower die base (24).

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