A large stamping die and method for an automobile frame

Abstract

The present application relates to the technical field of automobile stamping equipment, in particular to a large automobile frame stamping die and method; the technical problem to be solved by the present application is that the use of multiple mechanical arms not only causes high production cost, but also requires pre-adding of the time for the mechanical arms to enter and exit the stamping die when taking and placing the metal plate, resulting in a long stamping interval time and affecting the efficiency of the frame stamping production; the technical scheme is to provide a large automobile frame stamping die and method, which comprises a linkage feeding mechanism, the linkage feeding mechanism comprises a material conveying unit and a guide limiting unit, and the inner wall of the lower die is provided with a cooling mechanism; the present application has the beneficial effects that the material conveying unit is used to synchronously convey the metal plate to be stamped, the time interval between stamping is reduced, the guide limiting unit is used to guide and limit the position of the conveyed metal plate, and the cooling mechanism is used for air cooling and heat dissipation of the lower die.

Description

Technical Field

[0001] This invention relates to the field of automotive stamping equipment technology, specifically to a large stamping die and method for automotive frames. Background Technology

[0002] With the continuous development of the automotive industry, the stamping process for automotive parts is becoming increasingly important. The stamping process uses presses and dies to stretch, bend, and flanging metal sheets to form various automotive parts. The quality and production efficiency of these parts directly affect the production cost and performance of automobiles. Therefore, as an important part of the stamping process, the design and manufacturing quality of automotive stamping dies have a significant impact on the development of the automotive industry.

[0003] During the processing of automobile frames, sheet metal needs to undergo different stamping processes in sequence to gradually deform the sheet metal into the required frame component shape. The sheet metal is usually transported between different stamping processes using multiple sets of robotic arms. The use of multiple sets of robotic arms not only results in higher production costs, but also requires the robotic arms to allow time for entering and exiting the stamping die when picking up and placing sheet metal, leading to longer stamping intervals and affecting the efficiency of frame stamping production.

[0004] Combining the above issues, we find that existing stamping dies on the market are difficult to avoid all the problems mentioned above when in use. Even if they can be solved, they require the use of external tools, which makes it impossible to achieve the desired effect. Therefore, we propose a large stamping die and method for automobile frames. Summary of the Invention

[0005] The purpose of this invention is to provide a large stamping die and method for automobile frames to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a large stamping die for an automobile frame, comprising a main body, the main body including a lower support plate, four support columns fixedly installed on the top of the lower support plate, a top plate fixedly installed on the top of the support columns, a hydraulic cylinder fixedly installed on the bottom of the top plate, an upper die holder fixedly installed at the output end of the hydraulic cylinder, a guide rail fixedly installed on one side of the support columns, a side of the upper die holder slidably connected to the surface of the guide rail, an upper die fixedly installed on the surface of the upper die holder, a lower die for use with the upper die fixedly installed on the surface of the lower support plate, and a linkage feeding mechanism provided on one side of the lower die; The linkage feeding mechanism includes a material transfer unit, which is located on one side of the lower mold. The material transfer unit is used to synchronously transport the metal sheet to be stamped, thereby improving the efficiency of transporting the metal sheet. The linkage feeding mechanism also includes a guide and limiting unit, which is located on one side of the lower die. The guide and limiting unit works in conjunction with the material transfer unit to guide and limit the position of the conveyed metal sheet, thereby improving the stamping accuracy. The lower mold is equipped with a cooling mechanism on its inner wall, which is used to cool the lower mold by air, thereby improving the service life of the lower mold.

[0007] Preferably, the material transfer unit includes a slide rail, which is fixedly installed on one side of the lower mold. There are two slide rails, and three slide blocks are slidably connected to the inner wall of each slide rail. A connecting rod is provided on one side of each slide block, and the three slide blocks are interconnected via the connecting rod. A limit seat is fixedly installed on the top of each of the three slide blocks. A push rod is rotatably connected to the inner wall of the limit seat, and the push rod is inclined. A tension spring is fixedly installed on the surface of each slide block, and one end of the tension spring is fixedly connected to the surface of the push rod. A limit plate is fixedly installed on the inner wall of the limit seat. A groove is formed on the surface of the lower mold, and several telescopic rods are fixedly installed in the inner cavity of the groove. The top of each telescopic rod is fixed... A material carrier plate is installed. The surface of the lower mold has a placement groove that mates with the material carrier plate. A telescopic spring is fitted onto the surface of the telescopic rod. One end of the telescopic spring is fixedly connected to the bottom of the material carrier plate, and the other end is fixedly connected to the inner cavity of the slide groove. A pull rope is fixedly installed on one side of one of the slide blocks. One end of the pull rope passes through to one side of the slide rail. A pulley is fixedly installed on one side of the slide rail. The surface of the pull rope is slidably connected to the surface of the pulley. The other end of the pull rope is fixedly connected to the bottom of the upper mold. A tension spring is fitted onto the surface of the pull rope. One end of the tension spring is fixedly connected to one side of one of the slide blocks, and the other end is fixedly connected to the inner wall of the slide rail.

[0008] Preferably, the inner wall of the carrier plate is rotatably connected to several rollers, which are made of rubber material.

[0009] Preferably, the guiding and limiting unit includes a first guide groove, which is formed on the inner wall of the lower mold. There are two first guide grooves, or two sets of first guide grooves. A first guide post is slidably connected to the inner wall of the first guide groove. A first spring is provided in the inner cavity of the first guide groove. One end of the first spring is fixedly connected to the inner cavity of the first guide groove, and the other end of the first spring is fixedly connected to the bottom of the first guide post. The inner wall of the lower mold has four first limiting grooves. A first limiting block is slidably connected to the inner cavity of each of the four first limiting grooves. A first return spring is provided in the inner cavity of each first limiting groove. One end of the first return spring is fixedly connected to the inner cavity of the first limiting groove, and the other end of the first return spring is fixedly connected to one side of the first limiting block. A first limiting block is formed on one side of the first guide post. The lower mold has two guide grooves on its inner wall, forming two sets. A second guide post is slidably connected to the inner wall of each guide groove. A second spring is installed in the inner cavity of each guide groove, with one end fixedly connected to the inner cavity and the other end fixedly connected to the bottom of the second guide post. The lower mold also has four limiting grooves on its inner wall, each with a second limiting block slidably connected to its inner cavity. A second return spring is installed in the inner cavity of each limiting groove, with one end fixedly connected to the inner cavity and the other end fixedly connected to one side of the second limiting block. A second groove that mates with the second limiting block is located on one side of the second guide post.

[0010] Preferably, the inner wall of the lower mold is provided with a first displacement groove, and a first connecting rod is slidably connected to the inner cavity of the first displacement groove. One end of the first connecting rod extends through to one side of the lower mold, and one end of the first connecting rod is fixedly connected to one side of the first limiting block. The inner wall of the lower mold is provided with a second displacement groove, and a second connecting rod is slidably connected to the inner cavity of the second displacement groove. One end of the second connecting rod extends through to one side of the lower mold, and one end of the second connecting rod is fixedly connected to one side of the second limiting block. A push plate that cooperates with the first connecting rod and the second connecting rod is fixedly installed on one side of the slide block.

[0011] Preferably, the cooling mechanism includes an air storage tank, which is fixedly installed on one side of the top plate. An air pump is fixedly installed on the top of the air storage tank, and the output end of the air pump is fixedly connected to an air supply pipe. One end of the air supply pipe is fixedly connected to the top of the air storage tank. The inner wall of the lower mold has several through holes. A sleeve is slidably connected to the inner wall of the through hole. Several arc-shaped grooves are opened on one side of the sleeve. A guide plate is rotatably connected to the surface of the sleeve. A ventilation pipe is fixedly installed on the inner wall of the lower mold. One end of the ventilation pipe is fixedly connected to an air supply pipe. There are several air supply pipes, and one end of the air supply pipe extends into the inner cavity of the through hole.

[0012] Preferably, a guide block is fixedly installed on the top of the sleeve, and the guide block has a conical structure.

[0013] Preferably, the surface of the air duct is slidably connected to the inner wall of the sleeve, and the bottom of the sleeve has an arc-shaped structure.

[0014] Preferably, the inner cavity of the through hole is provided with an ejector spring, one end of which is fixedly installed in the inner cavity of the through hole, and the other end of which is fixedly connected to one end of the sleeve.

[0015] Preferably, a method for large-scale stamping of automobile frames includes the following steps: S1: The operator places the metal sheet to be stamped on the surface of one side of the carrier plate. The user starts the hydraulic cylinder to drive the upper mold to move upward. After the upper mold and the lower mold are separated, the reaction force of the telescopic spring can push the carrier plate to slide from the inner cavity of the placement groove, which can lift the metal sheet on the top of the carrier plate. S2: When the upper mold moves upward, it can drive the pull rope to move. The pull rope can pull the slide block to move on the slide rail. By setting the connecting rod, it can drive the three slide blocks on the slide rail to move synchronously. The push rod on the slide block can push the metal plate on the carrier plate to move synchronously, so as to transport the metal plate to the stamping position. S3: When the upper mold moves upward, the reaction force of the ejector spring can push the sleeve to move upward in the through hole, and can move one end of the sleeve to the top of the lower mold. The high-pressure air in the air tank is delivered to the ventilation pipe through the air supply pipe. The air supply pipe delivers air to the corresponding through hole. Through the sliding connection between the air supply pipe and the sleeve, the delivered air is guided to the surrounding area through the guide block at the top of the sleeve. The delivered air is delivered to the surrounding area through the arc groove opened on one side of the sleeve. Through the rotational connection between the guide plate and the sleeve, the wind can blow the guide plate to rotate, so that it can cooperate with the arc groove to turbulently deliver the delivered air. The wind can carry away the heat generated on the lower mold, which can prevent the lower mold from generating high temperature during long-term use, and prevent the lower mold from deforming due to high temperature stress, thereby improving the service life of the lower mold. S4: When the push rod pushes the metal sheet to the stamping position, the slide can drive the push plate to move the first connecting rod. The push plate can push the first connecting rod to move in the first displacement groove. The first connecting rod can push the first limiting block to move, thereby releasing the limiting effect of the first limiting block on the first slot. Through the reaction force of the first spring, the first guide post can be pushed to move in the first guide groove. The first guide post moves to the top of the lower mold, thereby guiding and limiting the front end of the metal sheet. S5: When the metal sheet is conveyed to the stamping position, the hydraulic cylinder drives the upper mold to move downward, which can drive the pull rope to move, thereby gradually reducing the force between the pull rope and the slide. Through the force of the tension spring, the slide can be pushed to slide in the opposite direction on the slide rail. By setting the push rod in an inclined position, the push rod can rotate and move in the inner wall of the limit seat, which can make the push rod slide from the bottom of the metal sheet to the opposite direction. When the push rod moves to one side of the metal sheet, through the force of the tension spring, the push rod can be pushed to rotate in the limit seat. By setting the limit plate, the position of the push rod can be restricted in one direction, thus restricting the push rod to the initial angle position. S6: When the hydraulic cylinder drives the upper mold to move downward, the slide block slides in the opposite direction simultaneously, which can drive the push plate to move. The push plate can push the second connecting rod to move in the second displacement groove. The second connecting rod can push the second limiting block to move, thereby releasing the limiting effect of the second limiting block on the second slot. Through the reaction force of the second spring, the second guide post can be pushed to move in the second guide groove. The second guide post moves to the top of the lower mold, thereby guiding and limiting the rear end of the metal sheet. S7: The hydraulic cylinder drives the upper and lower molds to work together to extrude the metal sheet, thereby completing the stamping operation of the metal sheet. The load plate moves downward into the placement groove under the pressure of the upper mold, and the sleeve moves downward into the hole under the pressure of the upper mold, so as to avoid affecting the stamping process of the metal sheet. S8: After stamping is completed, the hydraulic cylinder drives the upper mold to move upward, the material plate lifts the metal sheet upward in sync, and the push rod pushes the metal sheet to the subsequent processing flow.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes a material transfer unit. When the hydraulic cylinder drives the upper die to move upward, the telescopic spring can push the carrier plate to lift the metal sheet. When the upper die moves upward, the pull rope can drive the slide block to move on the slide rail. The push rod on the slide block can simultaneously transport the metal sheet. When the metal sheet is transported to the stamping position, the hydraulic cylinder drives the upper die to move downward, gradually reducing the force between the pull rope and the slide block. The tension spring pushes the slide block to slide in the opposite direction on the slide rail. The downward movement of the upper die drives the metal sheet and the carrier plate to move downward, enabling the metal sheet to be stamped again. The upward movement of the upper die can simultaneously complete the metal sheet conveying operation. The stamping interval is short, which can improve the efficiency of frame stamping production.

[0017] 2. This invention utilizes a guide and limiting unit. When the hydraulic cylinder drives the upper mold to move upward, it causes the slide to move synchronously. When the slide reaches the next stamping position of the metal sheet, the first limiting block releases its limiting effect from the first slot. The first spring can push the first guide post to move within the first guide groove. The first guide post can guide and limit the front end of the metal sheet. When the metal sheet is transported to the corresponding position, the hydraulic cylinder drives the upper mold to move downward. The second limiting block releases its limiting effect from the second slot. The second spring can push the second guide post to move within the second guide groove. The second guide post can guide and limit the rear end of the metal sheet. Thus, the metal sheet is simultaneously guided and limited during stamping, thereby improving the stamping accuracy of the metal sheet.

[0018] 3. This invention utilizes a cooling mechanism. When the hydraulic cylinder drives the upper mold to move upward, the top of the sleeve pushes the metal plate. High-pressure air in the air tank is transported to the ventilation pipe through the air supply pipe. The air in the air supply pipe is transported to the corresponding through hole. The transported air is transported to all sides through the arc-shaped groove opened on one side of the sleeve. The wind can blow the guide plate to rotate, thereby cooperating with the arc-shaped groove to turbulently transport the transported air. The wind can carry away the heat generated on the lower mold, which can prevent the lower mold from generating high temperature during long-term use, avoid the lower mold from deforming due to high temperature stress, improve the accuracy of frame stamping, and increase the service life of the lower mold. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the upper and lower molds of the present invention; Figure 3 This is a schematic diagram of the upper mold and pull cord of the present invention; Figure 4 This is a schematic diagram of the lower mold and the linkage feeding mechanism of the present invention. Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of a partial structure of the material transfer unit of the present invention; Figure 7 This is a schematic diagram of the slide rail and push rod of the present invention; Figure 8 This is a schematic diagram of the lower die cutting surface and guide limiting unit structure of the present invention; Figure 9 This is a schematic diagram of the structure of the present invention with the first guide post and the second guide post separated; Figure 10 This is a schematic diagram of the lower mold and cooling mechanism of the present invention; Figure 11 This is a schematic diagram of the structure of the ventilation duct and air supply duct of the present invention; Figure 12 This is a schematic diagram showing the disassembled structure of the sleeve, guide block, and guide plate of the present invention.

[0020] In the diagram: 1. Main body; 11. Lower support plate; 12. Support column; 13. Top plate; 14. Hydraulic cylinder; 15. Upper mold base; 16. Guide rail; 17. Upper mold; 18. Lower mold; 2. Linkage feeding mechanism; 21. Material transfer unit; 2101. Slide rail; 2102. Slide block; 2103. Connecting rod; 2104. Limiting seat; 2105. Push rod; 2106. Tension spring; 2107. Limiting plate; 2108. Slide groove; 2109. Telescopic rod; 2110. Carrying plate; 2111. Placement groove; 2112. Telescopic spring; 2113. Pull rope; 2114. Pulley; 2115. Tension spring; 2116. Roller; 22. Guide limiting unit; 2201. First guide groove; 2202. First guide column; 2203. First... 2204. Spring; 2205. First limiting groove; 2206. First limiting block; 2207. First reset spring; 2208. First slot; 2209. Second guide groove; 22000. Second guide post; 2210. Second spring; 2211. Second limiting groove; 2212. Second limiting block; 2213. Second reset spring; 2214. Second slot; 2215. First displacement groove; 2216. First connecting rod; 2217. Second displacement groove; 2218. Second connecting rod; 2219. Push plate; 3. Cooling mechanism; 31. Gas storage tank; 32. Air pump; 33. Gas supply pipe; 34. Through hole; 35. Sleeve; 36. Arc groove; 37. Guide plate; 38. Ventilation pipe; 39. Air supply pipe; 310. Guide block; 311. Ejection spring. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0022] Please see Figure 1-12 This invention provides a technical solution: a large stamping die and method for automobile frames. This invention makes corresponding improvements to the technical problems mentioned in the background art. It includes a main body 1, which includes a lower support plate 11. Four support columns 12 are fixedly installed on the top of the lower support plate 11. A top plate 13 is fixedly installed on the top of the support columns 12. A hydraulic cylinder 14 is fixedly installed on the bottom of the top plate 13. An upper die base 15 is fixedly installed at the output end of the hydraulic cylinder 14. A guide rail 16 is fixedly installed on one side of the support columns 12. One side of the upper die base 15 is slidably connected to the surface of the guide rail 16. An upper die 17 is fixedly installed on the surface of the upper die base 15. A lower die 18 that cooperates with the upper die 17 is fixedly installed on the surface of the lower support plate 11. A linkage feeding mechanism 2 is provided on one side of the lower die 18. As a further definition of the linkage feeding mechanism 2 of the present invention, the linkage feeding mechanism 2 includes a material transfer unit 21, which is disposed on one side of the lower mold 18. The material transfer unit 21 is used to synchronously transport the metal sheet to be stamped.

[0023] The material transfer unit 21 includes two slide rails 2101, which are fixedly installed on one side of the lower mold 18. Each slide rail 2101 has three slide blocks 2102 slidably connected to its inner wall. A connecting rod 2103 is provided on one side of each slide block 2102, and the three slide blocks 2102 are interconnected via the connecting rod 2103. A limit seat 2104 is fixedly installed on the top of each of the three slide blocks 2102. A push rod 2105 is rotatably connected to the inner wall, and the push rod 2105 is set at an inclination. A tension spring 2106 is fixedly installed on the surface of the slide 2102, and one end of the tension spring 2106 is fixedly connected to the surface of the push rod 2105. A limit plate 2107 is fixedly installed on the inner wall of the limit seat 2104. A slide groove 2108 is opened on the surface of the lower mold 18. Several telescopic rods 2109 are fixedly installed in the inner cavity of the slide groove 2108. A top of the telescopic rod 2109 is fixedly installed. The material carrier plate 2110 and the lower mold 18 have a placement groove 2111 on their surface that mates with the material carrier plate 2110. A telescopic spring 2112 is fitted onto the surface of the telescopic rod 2109. One end of the telescopic spring 2112 is fixedly connected to the bottom of the material carrier plate 2110, and the other end is fixedly connected to the inner cavity of the slide groove 2108. A pull rope 2113 is fixedly installed on one side of one of the slide blocks 2102, and one end of the pull rope 2113 passes through the slide rail. On one side of slide rail 2101, a pulley 2114 is fixedly installed on one side of slide rail 2101. The surface of pull rope 2113 is slidably connected to the surface of pulley 2114. The other end of pull rope 2113 is fixedly connected to the bottom of upper mold 17. A tension spring 2115 is sleeved on the surface of pull rope 2113. One end of tension spring 2115 is fixedly connected to one side of one of slide blocks 2102. The other end of tension spring 2115 is fixedly connected to the inner wall of slide rail 2101.

[0024] The inner wall of the material carrier plate 2110 is rotatably connected with several rollers 2116. The rollers 2116 are made of rubber material. By setting the rollers 2116 on the material carrier plate 2110, the metal sheet can be transported more smoothly on the material carrier plate 2110. The rubber rollers 2116 can prevent damage to the metal sheet during transportation.

[0025] The specific implementation of this embodiment is as follows: By setting up a hydraulic cylinder 14, the upper mold base 15 can be moved. By setting up a guide rail 16, the upper mold base 15 can be guided during its movement. The movement of the upper mold base 15 can drive the upper mold 17 to move, which can cooperate with the lower mold 18 to stamp the metal sheet. After stamping, the hydraulic cylinder 14 can drive the upper mold 17 to move upward. Through the reaction force of the telescopic spring 2112, the carrier plate 2110 can be pushed to slide out of the inner cavity of the placement groove 2111. By setting up a telescopic rod 2109, the carrier plate 2110 can be moved to slide out of the inner cavity of the placement groove 2111. The 10-position guide prevents the material plate 2110 from shifting during its ascent, thus supporting the metal sheet. When the upper mold 17 moves upward, it causes the pull rope 2113 to shift, which in turn causes the slide block 2102 to shift on the slide rail 2101. By setting a connecting rod 2103, the three slide blocks 2102 on the slide rail 2101 can shift synchronously. The push rods 2105 on the slide blocks 2102 can synchronously push the metal sheet on the material plate 2110 to shift, thus conveying the metal sheet. When the metal sheet is conveyed to the stamping position... The hydraulic cylinder 14 drives the upper mold 17 to move downward, which in turn causes the pull rope 2113 to move, thereby gradually reducing the force between the pull rope 2113 and the slide block 2102. Through the force of the tension spring, the slide block 2102 can be pushed to slide in the opposite direction on the slide rail 2101. By setting the push rod 2105 at an angle, the push rod 2105 can rotate and move within the inner wall of the limit seat 2104, allowing the push rod 2105 to slide from the bottom of the metal plate to the opposite direction. When the push rod 2105 moves to one side of the metal plate, the force of the tension spring 2106... The push rod 2105 can be pushed to rotate within the limit seat 2104. By setting the limit plate 2107, the position of the push rod 2105 can be restricted in one direction, thus limiting the push rod 2105 to the initial angle position. When the upper mold 18 moves downward, it can drive the metal sheet and the carrier plate 2110 to move downward, and the metal sheet can be stamped again. The carrier plate 2110 can slide into the placement groove 2111 under pressure, thereby avoiding affecting the stamping of the metal sheet. This process can be repeated to quickly complete the multiple feeding and stamping operations of the metal sheet. Example

[0026] Please see Figure 1-12 The present invention provides a technical solution: a large stamping die and method for automobile frames. The present invention makes corresponding improvements to the technical problems mentioned in the background art. The linkage feeding mechanism 2 includes a guide limiting unit 22, which is disposed on one side of the lower die 18. The guide limiting unit 22 is used in conjunction with the material transfer unit 21 to guide and limit the position of the conveyed metal sheet.

[0027] As a further limitation of the linkage feeding mechanism 2 of the present invention, the guide limiting unit 22 includes a first guide groove 2201. The first guide groove 2201 is formed on the inner wall of the lower mold 18. There are two first guide grooves 2201, and there are two sets of first guide grooves 2201. A first guide post 2202 is slidably connected to the inner wall of the first guide groove 2201. A first spring 2203 is provided in the inner cavity of the first guide groove 2201. One end of the first spring 2203 is fixedly connected to the inner cavity of the first guide groove 2201, and the other end of the first spring 2203 is fixedly connected to the first guide post 2202. The bottom of the guide post 2202 is fixedly connected. The inner wall of the lower mold 18 has four first limiting grooves 2204. Each of the four first limiting grooves 2204 has a first limiting block 2205 slidably connected to its inner cavity. A first return spring 2206 is installed in the inner cavity of each first limiting groove 2204. One end of the first return spring 2206 is fixedly connected to the inner cavity of the first limiting groove 2204, and the other end is fixedly connected to one side of the first limiting block 2205. One side of the first guide post 2202 has a groove that connects to the first limiting block 2205. The first slot 2207, which cooperates with the positioning block 2205, has a second guide groove 2208 on the inner wall of the lower mold 18. There are two second guide grooves 2208, and two sets of them. A second guide post 2209 is slidably connected to the inner wall of each second guide groove 2208. A second spring 2210 is installed inside the cavity of each second guide groove 2208. One end of the second spring 2210 is fixedly connected to the cavity of the second guide groove 2208, and the other end is fixedly connected to the bottom of the second guide post 2209. The lower mold 18... The inner wall is provided with a second limiting groove 2211, and there are four second limiting grooves 2211. The inner cavity of each of the four second limiting grooves 2211 is slidably connected with a second limiting block 2212. The inner cavity of the second limiting groove 2211 is provided with a second return spring 2213. One end of the second return spring 2213 is fixedly connected to the inner cavity of the second limiting groove 2211, and the other end of the second return spring 2213 is fixedly connected to one side of the second limiting block 2212. A second slot 2214 is provided on one side of the second guide post 2209 to cooperate with the second limiting block 2212.

[0028] The inner wall of the lower mold 18 is provided with a first displacement groove 2215. A first connecting rod 2216 is slidably connected to the inner cavity of the first displacement groove 2215. One end of the first connecting rod 2216 extends through to one side of the lower mold 18. One end of the first connecting rod 2216 is fixedly connected to one side of the first limiting block 2205. The inner wall of the lower mold 18 is provided with a second displacement groove 2217. A second connecting rod 2218 is slidably connected to the inner cavity of the second displacement groove 2217. One end of the second connecting rod 2218 extends through to one side of the lower mold 18. One end of the second connecting rod 2218 is fixedly connected to one side of the second limiting block 2212. A push plate 2219 that works in conjunction with the first connecting rod 2216 and the second connecting rod 2216 is fixedly installed on one side of the slide block 2102.

[0029] By setting the push plate 2219, when the slide block 2102 is displaced, it can move the first connecting rod 2216 and the second connecting rod 2103. The push plate 2219 can push the first connecting rod 2216 to move within the first displacement groove 2215. The first connecting rod 2216 can push the first limiting block 2205 to move, thereby releasing the first limiting block 2205 from the limiting effect of the first slot 2207. The push plate 2219 can push the second connecting rod 2218 to move within the second displacement groove 2217. The second connecting rod 2218 can push the second limiting block 2212 to move, thereby releasing the second limiting block 2212 from the limiting effect of the second slot 2214.

[0030] The specific implementation of this embodiment is as follows: By setting a first guide post 2202 and a second guide post 2209, with one side of the first guide post 2202 and the second guide post 2209 having a sloping structure, the position of the metal sheet can be guided and limited, thereby improving the accuracy of the metal sheet during stamping. When the hydraulic cylinder 14 drives the upper mold 18 to move downward to stamp the metal sheet, it can drive the first guide post 2202 to move synchronously into the first guide groove 2201, and drive the second guide post 2209 to move synchronously into the second guide groove 2208. The first return spring 2206 can push the first limiting block 2205 to slide in the inner cavity of the first limiting groove 2204, thereby allowing the first limiting block 2205 to slide. One end of 205 engages with the inner cavity of the first slot 2207 for limiting, thus restricting the position of the first guide post 2202 within the first guide groove 2201. The second return spring 2213 pushes the second limiting block 2212 to slide within the inner cavity of the second limiting groove 2211, allowing one end of the second limiting block 2212 to engage with the inner cavity of the second slot 2214 for limiting, thus restricting the position of the second guide post 2209 within the second guide groove 2208. This prevents interference with the stamping of the metal sheet. After the metal sheet stamping is completed, the hydraulic cylinder 14 drives the upper mold 17 to move upwards, and the slide block 2102 moves synchronously. When the slide block 2102 reaches the next stamping position of the metal sheet, it can drive... The push plate 2219 actuates the first connecting rod 2103, causing the first connecting rod 2216 to move within the first displacement groove 2215. The first connecting rod 2216 then moves the first limiting block 2205, releasing it from its limiting effect on the first slot 2207. Through the reaction force of the first spring 2203, the first guide post 2202 moves within the first guide groove 2201, moving above the lower mold 18. This guide post guides and limits the front end of the metal sheet. When the metal sheet is conveyed to the corresponding position, the hydraulic cylinder 14 moves the upper mold 17 downwards, and the slide block 2102 moves synchronously. Sliding displacement in the opposite direction can cause the push plate 2219 to move, which in turn pushes the second connecting rod 2218 to move within the second displacement groove 2217. The second connecting rod 2218 can then push the second limiting block 2212 to move, thereby releasing the second limiting block 2212 from its limiting effect with the second slot 2214. Through the reaction force of the second spring 2210, the second guide post 2209 can be pushed to move within the second guide groove 2208. The second guide post 2209 moves to the top of the lower mold 18, thereby guiding and limiting the rear end of the metal sheet. This improves the stamping accuracy of the metal sheet by guiding and limiting its movement during stamping. Example

[0031] Please see Figure 1-12 The present invention provides a technical solution: a large stamping die and method for automobile frame. The present invention makes corresponding improvements to the technical problems mentioned in the background art. The inner wall of the lower die 18 is provided with a cooling mechanism 3, which is used to cool the lower die 18 by air cooling, thereby improving the service life of the lower die 18.

[0032] As a further definition of the cooling mechanism 3 of the present invention, the cooling mechanism 3 includes an air storage tank 31, which is fixedly installed on one side of the top plate 13. An air pump 32 is fixedly installed on the top of the air storage tank 31. An air supply pipe 33 is fixedly connected to the output end of the air pump 32. One end of the air supply pipe 33 is fixedly connected to the top of the air storage tank 31. A through hole 34 is opened on the inner wall of the lower mold 18. The number of through holes 34 is several. A sleeve 35 is slidably connected to the inner wall of the through hole 34. A number of arc-shaped grooves 36 are opened on one side of the sleeve 35. A guide plate 37 is rotatably connected to the surface of the sleeve 35. A ventilation pipe 38 is fixedly installed on the inner wall of the lower mold 18. An air supply pipe 39 is fixedly connected to one end of the ventilation pipe 38. The number of air supply pipes 39 is several. One end of the air supply pipe 39 extends into the inner cavity of the through hole 34.

[0033] A guide block 310 is fixedly installed on the top of the sleeve 35. The guide block 310 has a conical structure. By setting the conical guide block 310, the air direction delivered by the air duct 39 can be guided, thereby enabling the delivered air to be transported in all directions.

[0034] The surface of the air duct 39 is slidably connected to the inner wall of the sleeve 35. The bottom of the sleeve 35 has an arc-shaped structure. Through the sliding connection between the air duct 39 and the sleeve 35, the air duct 39 can effectively deliver air to the inside of the sleeve 35. By setting the sleeve 35 with an arc-shaped structure, the delivered air can be guided downward, which is beneficial to the air cooling effect of the lower mold 18.

[0035] An ejector spring 311 is provided in the inner cavity of the through hole 34. One end of the ejector spring 311 is fixedly installed in the inner cavity of the through hole 34, and the other end of the ejector spring 311 is fixedly connected to one end of the sleeve 35. Through the reaction force of the ejector spring 311, the sleeve 35 can be pushed upward in the through hole 34, so that the top of the sleeve 35 can push the metal sheet, which is beneficial to the metal sheet after stamping being separated from the lower mold 18. One end of the sleeve 35 is moved to the top of the lower mold 18, which can ensure the effect of air cooling of the lower mold 18 by the sleeve 35.

[0036] The specific implementation of this embodiment is as follows: When the hydraulic cylinder 14 drives the upper mold 17 to move upward, the reaction force of the ejector spring 311 can push the sleeve 35 to move upward within the through hole 34, allowing the top of the sleeve 35 to push the metal plate, and moving one end of the sleeve 35 to the top of the lower mold 18. By setting up the air pump 32, starting the air pump 32 can deliver air to the inside of the air storage tank 31 through the air supply pipe 33. The air inside the air storage tank 31 is compressed and stored, which can improve the air delivery speed. The high-pressure air in the air storage tank 31 is delivered to the ventilation pipe 38 through the air supply pipe 33, and the air is delivered to the corresponding through hole 34 through the air supply pipe 39 and the sleeve. The sliding connection of pipe 35 ensures the effective air delivery of air from air duct 39 to sleeve 35. The delivered air is guided to the surroundings by the guide block 310 at the top of sleeve 35. The delivered air is also delivered to the surroundings by the arc groove 36 on one side of sleeve 35. The guide plate 37 is rotatably connected to sleeve 35. The air can blow the guide plate 37 to rotate, which can cooperate with the arc groove 36 to turbulently deliver the air. The air can carry away the heat generated on the lower die 18, which can prevent the lower die 18 from generating high temperature during long-term use, avoid deformation of the lower die 18 due to high temperature stress, improve the accuracy of frame stamping, and extend the service life of the lower die 18.

[0037] A method for large-scale stamping of automobile frames includes the following steps: S1: The operator places the metal sheet to be stamped on the surface of one side of the carrier plate 2110. The user starts the hydraulic cylinder 14 to drive the upper mold 17 to move upward. After the upper mold 17 is separated from the lower mold 18, the reaction force of the telescopic spring 2112 can push the carrier plate 2110 to slide from the inner cavity of the placement groove 2111, which can lift the metal sheet on the top of the carrier plate 2110. S2: When the upper mold 17 moves upward, it can drive the pull rope 2113 to move. The pull rope 2113 can pull the slide block 2102 to move on the slide rail 2101. By setting the connecting rod 2103, it can drive the three slide blocks 2102 on the slide rail 2101 to move synchronously. The push rod 2105 on the slide block 2102 can push the metal plate on the material plate 2110 to move synchronously, so as to transport the metal plate to the stamping position. S3: When the upper mold 17 moves upward, the reaction force of the ejector spring 311 can push the sleeve 35 to move upward in the through hole 34, and can move one end of the sleeve 35 to the top of the lower mold 18. The high-pressure air in the air tank 31 is delivered to the ventilation pipe 38 through the air supply pipe 33. The air supply pipe 33 delivers air to the corresponding through hole 34. Through the sliding connection between the air supply pipe 39 and the sleeve 35, the delivered air is guided and delivered to the surroundings through the guide block 310 at the top of the sleeve 35. The delivered air is delivered to the surroundings through the arc groove 36 opened on one side of the sleeve 35. Through the rotatable connection between the guide plate 37 and the sleeve 35, the wind can blow the guide plate 37 to rotate, so that it can cooperate with the arc groove 36 to turbulently deliver the delivered air. The wind can carry away the heat generated on the lower mold 18, which can prevent the lower mold 18 from generating high temperature during long-term use, and prevent the lower mold 18 from deforming due to high temperature stress, thereby improving the service life of the lower mold 18. S4: When the push rod 2105 pushes the metal sheet to the stamping position, the slide block 2102 can drive the push plate 2219 to move the first connecting rod 2216. The push plate 2219 can push the first connecting rod 2216 to move within the first displacement groove 2215. The first connecting rod 2216 can push the first limiting block 2205 to move, thereby releasing the limiting effect of the first limiting block 2205 with the first slot 2207. Through the reaction force of the first spring 2203, the first guide post 2202 can be pushed to move within the first guide groove 2201. The first guide post 2202 moves to the top of the lower mold 18, thereby guiding and limiting the front end of the metal sheet. S5: When the metal sheet is conveyed to the stamping position, the hydraulic cylinder 14 drives the upper mold 17 to move downward, which can drive the pull rope 2113 to move, thereby gradually reducing the force between the pull rope 2113 and the slide block 2102. Through the force of the tension spring, the slide block 2102 can be pushed to slide in the opposite direction on the slide rail 2101. By setting the push rod 2105 in an inclined position, the push rod 2105 can rotate and move within the inner wall of the limit seat 2104, which can make the push rod 2105 slide from the bottom of the metal sheet to the opposite direction. When the push rod 2105 moves to one side of the metal sheet, through the force of the tension spring 2106, the push rod 2105 can be pushed to rotate within the limit seat 2104. By setting the limit plate 2107, the position of the push rod 2105 can be unidirectionally restricted, so that the push rod 2105 can be restricted to the initial angle position. S6: When the hydraulic cylinder 14 drives the upper mold 17 to move downward, the slide block 2102 slides in the opposite direction simultaneously, which can drive the push plate 2219 to move. The push plate 2219 can push the second connecting rod 2218 to move in the second displacement groove 2217. The second connecting rod 2218 can push the second limiting block 2212 to move, so that the second limiting block 2212 can release the limiting effect of the second slot 2214. Through the reaction force of the second spring 2210, the second guide post 2209 can be pushed to move in the second guide groove 2208. The second guide post 2209 moves to the top of the lower mold 18, so as to guide and limit the rear end of the metal plate. S7: The hydraulic cylinder 14 drives the upper mold 17 and the lower mold 18 to extrude the metal sheet, thereby completing the stamping operation of the metal sheet. The material plate 2110 moves downward into the placement groove 2111 under the pressure of the upper mold 17, and the sleeve 35 moves downward into the hole under the pressure of the upper mold 17, so as to avoid affecting the stamping process of the metal sheet. S8: After stamping is completed, the hydraulic cylinder 14 drives the upper mold 17 to move upward, the material plate 2110 simultaneously lifts the metal sheet upward, and the push rod 2105 simultaneously pushes the metal sheet to be transported to the subsequent processing flow.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A large stamping die for an automobile frame, comprising a main body (1), characterized in that: The main body (1) includes a lower support plate (11), four support columns (12) are fixedly installed on the top of the lower support plate (11), a top plate (13) is fixedly installed on the top of the support columns (12), a hydraulic cylinder (14) is fixedly installed on the bottom of the top plate (13), an upper mold base (15) is fixedly installed at the output end of the hydraulic cylinder (14), a guide rail (16) is fixedly installed on one side of the support column (12), one side of the upper mold base (15) is slidably connected to the surface of the guide rail (16), an upper mold (17) is fixedly installed on the surface of the upper mold base (15), a lower mold (18) that cooperates with the upper mold (17) is fixedly installed on the surface of the lower support plate (11), and a linkage feeding mechanism (2) is provided on one side of the lower mold (18). The linkage feeding mechanism (2) includes a material transfer unit (21), which is located on one side of the lower mold (18). The material transfer unit (21) is used to synchronously transport the metal sheet to be stamped, thereby improving the efficiency of transporting the metal sheet. The linkage feeding mechanism (2) also includes a guide limiting unit (22), which is located on one side of the lower mold (18). The guide limiting unit (22) works in conjunction with the material transfer unit (21) to guide and limit the position of the conveyed metal sheet, thereby improving the stamping accuracy. The inner wall of the lower mold (18) is provided with a cooling mechanism (3), which is used to cool the lower mold (18) by air cooling, thereby improving the service life of the lower mold (18).

2. The large stamping die for an automobile frame according to claim 1, characterized in that: The material transfer unit (21) includes a slide rail (2101), which is fixedly installed on one side of the lower mold (18). There are two slide rails (2101). A slide block (2102) is slidably connected to the inner wall of the slide rail (2101). There are three slide blocks (2102) on each slide rail (2101). A connecting rod (2103) is provided on one side of each slide block (2102). The three slide blocks (2102) are connected to each other through the connecting rod (2103). A limit seat (2104) is fixedly installed on the top of each of the three slide blocks (2102). The inner wall of the limiting seat (2104) is rotatably connected to a push rod (2105), the push rod (2105) is inclined, a tension spring (2106) is fixedly installed on the surface of the slide (2102), one end of the tension spring (2106) is fixedly connected to the surface of the push rod (2105), a limiting plate (2107) is fixedly installed on the inner wall of the limiting seat (2104), a slide groove (2108) is opened on the surface of the lower mold (18), and a plurality of telescopic rods (2109) are fixedly installed in the inner cavity of the slide groove (2108). A material carrier plate (2110) is fixedly installed on the top of the 9), and a placement groove (2111) for use with the material carrier plate (2110) is opened on the surface of the lower mold (18). A telescopic spring (2112) is sleeved on the surface of the telescopic rod (2109). One end of the telescopic spring (2112) is fixedly connected to the bottom of the material carrier plate (2110), and the other end of the telescopic spring (2112) is fixedly connected to the inner cavity of the slide groove (2108). A pull rope (2113) is fixedly installed on one side of one of the slide blocks (2102). One end of the pull rope (2113) is fixedly connected to the inner cavity of the slide groove (2108). A pulley (2114) is fixedly installed on one side of the slide rail (2101), and the surface of the pull rope (2113) is slidably connected to the surface of the pulley (2114). The other end of the pull rope (2113) is fixedly connected to the bottom of the upper mold (17). A tension spring (2115) is sleeved on the surface of the pull rope (2113). One end of the tension spring (2115) is fixedly connected to one side of one of the slide blocks (2102), and the other end of the tension spring (2115) is fixedly connected to the inner wall of the slide rail (2101).

3. The large stamping die for an automobile frame according to claim 2, characterized in that: The inner wall of the material carrier plate (2110) is rotatably connected with several rollers (2116), which are made of rubber material.

4. The large stamping die for an automobile frame according to claim 1, characterized in that: The guide limiting unit (22) includes a first guide groove (2201), which is formed on the inner wall of the lower mold (18). There are two first guide grooves (2201) in two sets. A first guide post (2202) is slidably connected to the inner wall of the first guide groove (2201). A first spring (2203) is provided in the inner cavity of the first guide groove (2201). One end of the first spring (2203) is fixedly connected to the inner cavity of the first guide groove (2201), and the other end of the first spring (2203) is fixedly connected to the bottom of the first guide post (2202). Next, the inner wall of the lower mold (18) is provided with a first limiting groove (2204). There are four first limiting grooves (2204). The inner cavity of each of the four first limiting grooves (2204) is slidably connected with a first limiting block (2205). The inner cavity of the first limiting groove (2204) is provided with a first return spring (2206). One end of the first return spring (2206) is fixedly connected to the inner cavity of the first limiting groove (2204), and the other end of the first return spring (2206) is fixedly connected to one side of the first limiting block (2205). One side of the first guide post (2202) is provided with a part that cooperates with the first limiting block (2205) to make it... The lower mold (18) has a first slot (2207) and a second guide slot (2208) on its inner wall. There are two second guide slots (2208) in two sets. A second guide post (2209) is slidably connected to the inner wall of each second guide slot (2208). A second spring (2210) is installed in the inner cavity of each second guide slot (2208). One end of the second spring (2210) is fixedly connected to the inner cavity of the second guide slot (2208), and the other end is fixedly connected to the bottom of the second guide post (2209). The lower mold (18) has a first slot (2207). The wall is provided with a second limiting groove (2211), and there are four second limiting grooves (2211). The inner cavity of each of the four second limiting grooves (2211) is slidably connected with a second limiting block (2212). The inner cavity of the second limiting groove (2211) is provided with a second return spring (2213). One end of the second return spring (2213) is fixedly connected to the inner cavity of the second limiting groove (2211), and the other end of the second return spring (2213) is fixedly connected to one side of the second limiting block (2212). The second guide post (2209) is provided with a second slot (2214) on one side that cooperates with the second limiting block (2212).

5. A large stamping die for an automobile frame according to claim 2, characterized in that: The inner wall of the lower mold (18) is provided with a first displacement groove (2215). The inner cavity of the first displacement groove (2215) is slidably connected to a first connecting rod (2216). One end of the first connecting rod (2216) extends through to one side of the lower mold (18). One end of the first connecting rod (2216) is fixedly connected to one side of the first limiting block (2205). The inner wall of the lower mold (18) is provided with a second displacement groove (2217). The inner cavity of the second displacement groove (2217) is slidably connected to a second connecting rod (2218). One end of the second connecting rod (2218) extends through to one side of the lower mold (18). One end of the second connecting rod (2218) is fixedly connected to one side of the second limiting block (2212). A push plate (2219) that works in conjunction with the first connecting rod (2216) and the second connecting rod (2218) is fixedly installed on one side of the slide block (2102).

6. A large stamping die for an automobile frame according to claim 1, characterized in that: The cooling mechanism (3) includes a gas storage tank (31), which is fixedly installed on one side of the top plate (13). A gas pump (32) is fixedly installed on the top of the gas storage tank (31). The output end of the gas pump (32) is fixedly connected to a gas supply pipe (33). One end of the gas supply pipe (33) is fixedly connected to the top of the gas storage tank (31). The inner wall of the lower mold (18) is provided with through holes (34). The number of through holes (34) is several. A sleeve (35) is slidably connected to the inner wall of the through hole (34). Several arc-shaped grooves (36) are opened on one side of the sleeve (35). A guide plate (37) is rotatably connected to the surface of the sleeve (35). A ventilation pipe (38) is fixedly installed on the inner wall of the lower mold (18). One end of the ventilation pipe (38) is fixedly connected to an air supply pipe (39). There are several air supply pipes (39). One end of the air supply pipe (39) extends into the inner cavity of the through hole (34).

7. A large stamping die for an automobile frame according to claim 6, characterized in that: A guide block (310) is fixedly installed on the top of the sleeve (35), and the guide block (310) has a conical structure.

8. A large stamping die for an automobile frame according to claim 6, characterized in that: The surface of the air duct (39) is slidably connected to the inner wall of the sleeve (35), and the bottom of the sleeve (35) is an arc-shaped structure.

9. A large stamping die for an automobile frame according to claim 6, characterized in that: The inner cavity of the through hole (34) is provided with an ejector spring (311). One end of the ejector spring (311) is fixedly installed in the inner cavity of the through hole (34), and the other end of the ejector spring (311) is fixedly connected to one end of the sleeve (35).

10. A method for large-scale stamping of an automobile frame according to claims 1-9, comprising the following steps: S1: The operator places the metal sheet to be stamped on the surface of one side of the carrier plate (2110). The user starts the hydraulic cylinder (14) to drive the upper mold (17) to move upward. After the upper mold (17) and the lower mold (18) are separated, the reaction force of the telescopic spring (2112) can push the carrier plate (2110) to slide from the inner cavity of the placement groove (2111), which can lift the metal sheet on the top of the carrier plate (2110). S2: When the upper mold (17) moves upward, it can drive the pull rope (2113) to move. The pull rope (2113) can pull the slide block (2102) to move on the slide rail (2101). By setting the connecting rod (2103), it can drive the three slide blocks (2102) on the slide rail (2101) to move synchronously. The push rod (2105) on the slide block (2102) can push the metal plate on the material plate (2110) to move synchronously, so as to transport the metal plate and transport the metal plate to the stamping position. S3: When the upper mold (17) moves upward, the reaction force of the ejector spring (311) can push the sleeve (35) upward in the through hole (34), and can move one end of the sleeve (35) to the top of the lower mold (18). The high-pressure air in the air tank (31) is transported to the ventilation pipe (38) through the air supply pipe (33). The air in the air supply pipe (33) is transported to the corresponding through hole (34). Through the sliding connection between the air supply pipe (39) and the sleeve (35), the transported air is directed to four directions through the guide block (310) at the top of the sleeve (35). The air is guided and transported around the bush. The air is transported to the surrounding area through the arc groove (36) opened on one side of the sleeve (35). The air is rotatably connected to the sleeve (35) through the guide plate (37). The wind can blow the guide plate (37) to rotate, so that it can cooperate with the arc groove (36) to turbulently transport the air. The wind can carry away the heat generated on the lower mold (18), which can prevent the lower mold (18) from generating high temperature during long-term use, and prevent the lower mold (18) from deforming due to high temperature stress, thereby improving the service life of the lower mold (18). S4: When the push rod (2105) pushes the metal sheet to the stamping position, the slide (2102) can drive the push plate (2219) to move the first connecting rod (2216). The push plate (2219) can push the first connecting rod (2216) to move in the first displacement groove (2215). The first connecting rod (2216) can push the first limiting block (2205) to move, so that the first limiting block (2205) can release the limiting effect of the first slot (2207). Through the reaction force of the first spring (2203), the first guide post (2202) can be pushed to move in the first guide groove (2201). The first guide post (2202) moves to the top of the lower mold (18), so that the front end of the metal sheet can be guided and limited. S5: When the metal sheet is conveyed to the stamping position, the hydraulic cylinder (14) drives the upper mold (17) to move downward, which can drive the pull rope (2113) to move, thereby gradually reducing the force between the pull rope (2113) and the slide (2102). Through the force of the tension spring (2115), the slide (2102) can be pushed to slide in the opposite direction on the slide rail (2101). By setting the push rod (2105) in an inclined position, the push rod (2105) can be in the limit seat (21102) The inner wall of 04) rotates and displaces, which allows the push rod (2105) to slide from the bottom of the metal plate to the opposite direction. When the push rod (2105) is displaced to one side of the metal plate, the force of the tension spring (2106) can push the push rod (2105) to rotate in the limit seat (2104). By setting the limit plate (2107), the position of the push rod (2105) can be unidirectionally restricted, so that the push rod (2105) can be restricted to the initial angle position. S6: When the hydraulic cylinder (14) drives the upper mold (17) to move downward, the slide block (2102) moves in the opposite direction at the same time, which can drive the push plate (2219) to move. The push plate (2219) can push the second connecting rod (2218) to move in the second displacement groove (2217). The second connecting rod (2218) can push the second limiting block (2212) to move, so that the second limiting block (2212) can release the limiting effect of the second slot (2214). Through the reaction force of the second spring (2210), the second guide post (2209) can be pushed to move in the second guide groove (2208). The second guide post (2209) moves to the top of the lower mold (18), so that the rear end of the metal plate can be guided and limited. S7: The hydraulic cylinder (14) drives the upper mold (17) and the lower mold (18) to squeeze the metal sheet, thereby completing the stamping operation of the metal sheet. The material plate (2110) moves downward into the placement groove (2111) under the pressure of the upper mold (17), and the sleeve (35) moves downward into the hole under the pressure of the upper mold (17), so as to avoid affecting the stamping process of the metal sheet. S8: After the stamping is completed, the hydraulic cylinder (14) drives the upper mold (17) to move upward, the material plate (2110) lifts the metal plate upward in sync, and the push rod (2105) pushes the metal plate to the subsequent processing flow in sync.

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