Sheet metal part stamping device

Abstract

The utility model discloses a stamping device for sheet metal parts, and relates to the technical field of stamping devices. A protective cover is fixedly connected to the upper end of the supporting seat, a lifting structure is fixedly connected to the middle of the upper end of the supporting seat, a stamping structure is fixedly connected to the upper portion of the lifting structure, an upper die is fixedly connected to the middle of the stamping structure, and a lubricating structure is fixedly connected to the middle of the supporting seat and the stamping structure jointly. The middle of the stamping structure is fixedly connected with a lower die. Through the cooperation of the supporting seat and the lubricating structure, cutting fluid in the supporting seat can be sprayed into the inner cavity of the upper die through the lubricating structure, so that heat generated in the stamping process can be absorbed and taken away through the cutting fluid, the temperature of a workpiece and the die is reduced, thermal deformation is reduced, and burr formation is reduced; and a layer of lubricating film can be formed between the workpiece and the die by using the cutting fluid, so that friction and abrasion are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping devices, in particular to a sheet metal stamping device. Background Art

[0002] Sheet metal stamping, as a comprehensive cold processing technology for metal sheets, covers multiple links such as shearing, punching / cutting / compounding, folding, welding, riveting, splicing, and forming. In this series of processes, stamping is particularly critical. It uses a mold installed on a press to apply pressure to the material to cause it to separate or plastically deform, thereby obtaining a pressure processing method of the required parts. However, although the stamping process occupies an important position in sheet metal processing, the generation of burrs has become a problem that cannot be ignored in actual operation.

[0003] Burrs are tiny metal protrusions formed on the edge of the workpiece due to incomplete breakage or tearing of the material in the die during the stamping process. The presence of burrs not only affects the appearance quality of the workpiece, but may also cause troubles in subsequent assembly and use. In some cases, burrs may even lead to the scrapping of the entire product. Therefore, reducing the generation of burrs from a design perspective is of great significance to improving the quality and efficiency of the sheet metal stamping process.

[0004] Chinese patent document CN213915005U discloses a sheet metal stamping device, including a stamping device body, a display screen and a button are arranged on the front end outer surface of the stamping device body, and the button is located at the lower end of the display screen, a punch is arranged on the upper end inner surface of the stamping device body, and a workbench is arranged on the lower end inner surface of the stamping device body; however, there are still the following defects in the implementation process:

[0005] Although the device in the above document can drive the cleaning sponge to move through the connecting plate, which is convenient for cleaning the debris on the workbench and improves people's cleaning efficiency, the device in the above document cannot reduce the generation of burrs and improve the stamping quality of the device. Utility Model Content

[0006] The purpose of the utility model is to provide a sheet metal stamping device to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A sheet metal stamping device comprises a support seat; support feet are fixedly connected to the lower end of the support seat on all sides, a protective cover is fixedly connected to the upper end of the support seat, a lifting structure is fixedly connected to the middle of the upper end of the support seat, a stamping structure is fixedly connected to the upper part of the lifting structure, an upper die is fixedly connected to the middle of the stamping structure, a lubrication structure is fixedly connected to the middle of the support seat and the stamping structure, and a lower die is fixedly connected to the middle of the stamping structure.

[0009] A further improvement of the technical solution of the utility model is that a slide groove is opened on one side of the upper part of the support seat, a filter box is slidably connected to the inner cavity of the slide groove, a plurality of water inlet holes are opened on the bottom wall of the inner cavity of the slide groove, a storage box is fixedly connected to the lower part of the support seat, and the inner cavities of the water inlet holes are communicated with the inner cavity of the storage box.

[0010] The above-mentioned technical scheme is adopted, in which the cutting fluid collected on the surface of the support seat can be filtered through a slide groove, and some impurities and burrs in the cutting fluid can be intercepted. Then the filtered cutting fluid can flow back into the inner cavity of the storage box through a number of water inlet holes, waiting to be used again, thereby improving the use efficiency of the cutting fluid and reducing the production cost of the device.

[0011] A further improvement of the technical solution of the utility model is that an observation window is provided on one side of the storage box, and the observation window is used to observe the water level of the liquid in the inner cavity of the storage box.

[0012] By adopting the above technical solution, the liquid water level in the inner cavity of the storage box can be observed through the observation window to prevent the water level in the inner cavity of the storage box from being too low, so as to prevent the water pump from running in an idling state. The idling of the water pump not only affects its service life, but may also cause damage to the equipment.

[0013] A further improvement of the technical solution of the utility model is that the lifting structure includes a connecting seat, a baffle is fixedly connected to one side of the connecting seat, an electric push rod is placed in the inner cavity of the connecting seat, the electric push rod is fixedly connected to the baffle, a wedge block is slidably connected to the inner cavity of the connecting seat, the output end of the electric push rod is fixedly connected to the wedge block, the middle part of the connecting seat is slidably connected to the base structure, and the side of the wedge block close to the base structure is in contact with the lower part of the base structure.

[0014] The above-mentioned technical solution is adopted, in which the output end of the electric push rod pushes the wedge block 1 to slide in the inner cavity of the connecting seat, so that the wedge block 1 can be used to drive the base structure to rise, so that the position of the base structure components in the inner cavity of the upper mold can be adjusted as needed, making the entire stamping process more flexible, and can adapt to workpieces of different sizes and materials, thereby improving production efficiency and product quality.

[0015] A further improvement of the technical solution of the utility model is that the base structure includes a mold bottom, the lower end of the mold bottom is fixedly connected with a wedge block 2, the lower part of the wedge block 2 is in contact with the side of the wedge block 1 close to the wedge block 2, the middle part of the wedge block 2 is symmetrically fixedly connected with a connecting block 1, the middle part of the connecting block 1 is slidably connected with a guide rod, the lower end of the guide rod is fixedly connected with the connecting block 2, the lower end of the connecting block 2 is fixedly connected to the upper end of the connecting seat, the outer surface of the guide rod is wound with a spring, the spring on the same side is located between the connecting block 1 and the connecting block 2, and the side of the spring close to the connecting block 1 is fixedly connected to the connecting block 1.

[0016] The above technical solution is adopted. In this solution, through the cooperation of the spring and the connecting block one, when the position of the base structure needs to be adjusted downward, the wedge block two and the mold bottom can be driven to move downward together, so that the position height of the base structure can be adjusted. In addition, through the cooperation of the spring and the connecting block one, when the workpiece is in the stamping process, the spring can be used to alleviate the pressure and vibration generated in the stamping process, reduce cracks and deformation caused by stress concentration, and other damage, thereby improving processing accuracy and product quality.

[0017] A further improvement of the technical solution of the utility model is that the stamping structure includes two support plates 2, the lower ends of the two support plates 2 are fixedly connected to the upper end of the connecting seat, the opposite surfaces of the two support plates 2 are fixedly connected with connecting blocks 3, the two connecting blocks 3 are fixedly connected to the upper die, the upper parts of the opposite surfaces of the two support plates 2 are provided with sliding grooves 2, the inner cavities of the two sliding grooves 2 are slidably connected with sliders 2, the upper ends of the two support plates 2 are fixedly connected with support plate 1, the middle part of support plate 1 is fixedly connected with a hydraulic cylinder, and the output end of the hydraulic cylinder extends through the upper end of support plate 1 to the lower part, the output end of the hydraulic cylinder is fixedly connected to the upper end of slider 2, and the lower end of slider 2 is fixedly connected to the upper end of the lower die.

[0018] The above-mentioned technical scheme is adopted, in which the moving position of the slider two is limited by the slide groove two, so that when the hydraulic cylinder pushes the slider two to move, and then the slider two drives the lower die to move toward the workpiece, it can prevent the lower die from being dislocated during the movement, etc., to avoid the workpiece being subjected to uneven force during stamping, thereby causing uneven tearing or breaking of the material, increasing the possibility of burr formation, and when the lower die and the upper die are precisely aligned, the punching force can be evenly distributed on the workpiece, so that the material breaks on a predetermined path, reducing abnormal tearing caused by dislocation, thereby helping to reduce the number and size of burrs and improve the surface quality of the workpiece.

[0019] A further improvement of the technical solution of the utility model is that the lubrication structure includes a water pump, the lower end of the water pump is fixedly connected to the bottom wall of the inner cavity of the storage box, the output end of the water pump is fixedly connected to a water pipe, the water pipe is fixedly connected to the support seat, the output end of the water pipe is fixedly connected to a switching block, and the inner cavity of the water pipe is communicated with the inner cavity of the switching block, the side of the switching block close to the second support plate is fixedly connected to the second support plate, the side of the switching block away from the water pipe is rotatably connected to a nozzle, and the inner cavity of the switching block is communicated with the inner cavity of the nozzle.

[0020] The above-mentioned technical scheme is adopted, in which the cutting fluid in the inner cavity of the storage box can be transported to the inner cavity of the water pipe through a water pump, and then the cutting fluid can be transported to the nozzle through the cooperation of the water pipe and the adapter block, so that the cutting fluid can be sprayed into the inner cavity of the upper mold by the nozzle, so that the cutting fluid can be used to absorb and take away the heat generated in the stamping process, thereby reducing the temperature of the workpiece and the mold, reducing thermal deformation, reducing the formation of burrs, and the cutting fluid can be used to form a lubricating film between the workpiece and the mold to reduce friction and wear; the nozzle is rotatably connected to the adapter block, so that the spray angle of the nozzle can be adjusted as needed, thereby improving the flexibility of use of the device.

[0021] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0022] 1. The utility model provides a sheet metal stamping device. Through the cooperation of a support seat and a lubrication structure, the lubrication structure can be used to spray the cutting fluid in the support seat into the inner cavity of the upper die, so that the cutting fluid can be used to absorb and take away the heat generated in the stamping process, reduce the temperature of the workpiece and the die, reduce thermal deformation, reduce the formation of burrs, and can use the cutting fluid to form a lubricating film between the workpiece and the die to reduce friction and wear. Through the cooperation of a lifting structure and an upper die, the lifting structure can be used to adjust the position height of the die bottom in the inner cavity of the upper die as needed, so that the entire stamping process is more flexible and can adapt to workpieces of different sizes and materials. Through the cooperation of the stamping structure and the lower die, the lower die can be prevented from being dislocated in the process of the stamping structure pushing the lower die to apply a force to the workpiece, thereby causing the workpiece to be subjected to uneven force during stamping, thereby causing uneven tearing or fracture of the material, and increasing the possibility of burr formation, thereby reducing the probability of burrs generated by the device when stamping sheet metal, and improving the stamping quality of the device.

[0023] 2. The utility model provides a sheet metal stamping device, which can filter the used cutting fluid by using a slide groove, so as to improve the utilization rate of the cutting fluid and reduce the production cost. Through the cooperation of the spring and the connecting block, when the mold bottom needs to be adjusted downward, the wedge block 2 can be driven to move downward, and the spring can be used to relieve the pressure and vibration generated in the stamping process, reduce the damage such as cracks and deformation caused by stress concentration, thereby improving the processing accuracy and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a schematic diagram of the base of the utility model;

[0027] Figure 3 This is a schematic diagram of the lifting structure of the utility model;

[0028] Figure 4 It is a schematic diagram of the stamping structure of the utility model;

[0029] Figure 5 This is a schematic diagram of the lubrication structure of the utility model;

[0030] In the figure: 1. support seat; 11. slide slot 1; 12. filter box; 13. water inlet hole; 14. storage box; 141. observation window; 2. support foot; 3. protective cover; 4. lifting structure; 41. connecting seat; 42. baffle; 43. electric push rod; 44. wedge block 1; 45. base structure; 451. mold bottom; 452. wedge block 2; 453. guide rod; 454. connecting block 1; 455. spring; 456. connecting block 2; 5. stamping structure; 51. support plate 2; 52. connecting block 3; 53. slide slot 2; 54. slider 2; 55. hydraulic cylinder; 6. lubrication structure; 61. water pump; 62. water pipe; 63. adapter block; 64. nozzle; 7. upper mold; 8. lower mold. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the embodiments:

[0032] like Figure 1-5As shown, the utility model provides a sheet metal stamping device, including a support base 1; support feet 2 are fixedly connected to the lower end of the support base 1, a protective cover 3 is fixedly connected to the upper end of the support base 1, a lifting structure 4 is fixedly connected to the middle of the upper end of the support base 1, a stamping structure 5 is fixedly connected to the upper part of the lifting structure 4, an upper die 7 is fixedly connected to the middle of the stamping structure 5, a lubrication structure 6 is fixedly connected to the middle of the support base 1 and the stamping structure 5, and a lower die 8 is fixedly connected to the middle of the stamping structure 5.

[0033] In this embodiment, the entire device can be supported and connected by the support base 1, the support base 1 can be supported by the support foot 2, the protective cover 3 can prevent the debris generated in the process of stamping the sheet metal from splashing, thereby affecting the surrounding people or the environment, and can avoid the cutting fluid from splashing, the lifting structure 4 can adjust the bottom position height of the workpiece to be processed as needed, the stamping structure 5 can prevent the lower die 8 from being dislocated when stamping the workpiece, and the lubrication structure 6 can spray the cutting fluid stored in the support base 1 onto the surface of the workpiece, so that the workpiece can be lubricated and cooled when stamping, thereby reducing the generation of burrs.

[0034] like Figure 3 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the lifting structure 4 includes a connecting seat 41, a baffle 42 is fixedly connected to one side of the connecting seat 41, an electric push rod 43 is placed in the inner cavity of the connecting seat 41, the electric push rod 43 is fixedly connected to the baffle 42, a wedge block 44 is slidably connected to the inner cavity of the connecting seat 41, the output end of the electric push rod 43 is fixedly connected to the wedge block 44, a base structure 45 is slidably connected to the middle of the connecting seat 41, and a side of the wedge block 44 close to the base structure 45 is in contact with the lower part of the base structure 45;

[0035] The base structure 45 includes a mold bottom 451, and a wedge block 2 452 is fixedly connected to the lower end of the mold bottom 451. The lower part of the wedge block 2 452 fits with the side of the wedge block 1 44 close to the wedge block 2 452. The middle part of the wedge block 2 452 is symmetrically fixedly connected to the connecting block 1 454. The middle part of the connecting block 1 454 is slidably connected to a guide rod 453, and the lower end of the guide rod 453 is fixedly connected to the connecting block 2 456. The lower end of the connecting block 2 456 is fixedly connected to the upper end of the connecting seat 41. The outer surface of the guide rod 453 is wound with a spring 455. The spring 455 on the same side is located between the connecting block 1 454 and the connecting block 2 456. The side of the spring 455 close to the connecting block 1 454 is fixedly connected to the connecting block 1 454.

[0036] In this embodiment, when it is necessary to stamp the sheet metal, first, according to the stamping needs of the sheet metal, the position height of the mold bottom 451 in the inner cavity of the upper mold 7 is adjusted, and the electric push rod 43 is operated, and then the output end of the electric push rod 43 is used to push the wedge block 1 44 to slide in the inner cavity of the connecting seat 41, so that the wedge block 1 44 can apply a force to the lower part of the wedge block 2 452, thereby driving the wedge block 2 452 to slide in the middle of the connecting seat 41, and then the wedge block 2 452 is used to drive the mold bottom 451 to slide in the inner cavity of the upper mold 7. When the wedge block 2 452 rises, it will drive the connecting block 1 454 to slide upward, thereby driving the spring 455 to stretch, so that the spring 455 can be used to relieve the pressure and vibration generated during the stamping process, reduce the damage such as cracks and deformation caused by stress concentration, and reduce the generation of burrs.

[0037] like Figure 4 As shown, on the basis of Example 2, the utility model provides a technical solution: preferably, the stamping structure 5 includes two support plates 2 51, the lower ends of the two support plates 2 51 are commonly fixedly connected to the upper end of the connecting seat 41, the opposite surfaces of the two support plates 2 51 are fixedly connected with connecting blocks 3 52, the two connecting blocks 3 52 are commonly fixedly connected to the upper mold 7, the upper parts of the opposite surfaces of the two support plates 2 51 are provided with sliding grooves 2 53, the inner cavities of the two sliding grooves 2 53 are commonly slidably connected with sliders 2 54, the upper ends of the two support plates 2 51 are commonly fixedly connected with support plate 1, the middle part of support plate 1 is fixedly connected with a hydraulic cylinder 55, and the output end of the hydraulic cylinder 55 extends through the upper end of the support plate 1 to the lower part, the output end of the hydraulic cylinder 55 is fixedly connected to the upper end of the slider 2 54, and the lower end of the slider 2 54 is fixedly connected to the upper end of the lower mold 8.

[0038] In this embodiment, the sheet metal to be stamped is then placed in the inner cavity of the upper die 7, and then the hydraulic cylinder 55 is operated, and the output end of the hydraulic cylinder 55 is used to push the slider 54 to slide in the inner cavity of the slide groove 53, and then the slider 54 is used to drive the lower die 8 to move toward the workpiece. Through the cooperation of the slide groove 53 and the slider 54, the lower die 8 can be prevented from being misaligned during the movement, and the workpiece can be prevented from being subjected to uneven force during stamping, thereby causing uneven tearing or breaking of the material and increasing the possibility of burr formation. Then, with the cooperation of the upper die 7 and the lower die 8, the workpiece can be stamped.

[0039] like Figure 2 and Figure 5As shown, on the basis of Example 3, the utility model provides a technical solution: preferably, a slide groove 11 is provided on one side of the upper part of the support seat 1, and a filter box 12 is slidably connected to the inner cavity of the slide groove 11, and a plurality of water inlet holes 13 are provided on the bottom wall of the inner cavity of the slide groove 11, and a storage box 14 is fixedly connected to the lower part of the support seat 1, and the inner cavity of the water inlet holes 13 is communicated with the inner cavity of the storage box 14, and an observation window 141 is provided on one side of the storage box 14, and the observation window 141 is used to observe the water level height of the liquid in the inner cavity of the storage box 14, and the lubrication The structure 6 includes a water pump 61, the lower end of the water pump 61 is fixedly connected to the bottom wall of the inner cavity of the storage box 14, the output end of the water pump 61 is fixedly connected to a water pipe 62, the water pipe 62 is fixedly connected to the support seat 1, the output end of the water pipe 62 is fixedly connected to a switching block 63, and the inner cavity of the water pipe 62 is communicated with the inner cavity of the switching block 63, the side of the switching block 63 close to the support plate 2 51 is fixedly connected to the support plate 2 51, the side of the switching block 63 away from the water pipe 62 is rotatably connected to a nozzle 64, and the inner cavity of the switching block 63 is communicated with the inner cavity of the nozzle 64.

[0040] In this embodiment, during the process of stamping the workpiece, the water pump 61 is operated to transport the cutting fluid in the inner cavity of the storage box 14 to the nozzle 64 through the water pipe 62, and then the cutting fluid is sprayed toward the workpiece through the nozzle 64. The stamped sheet metal is lubricated and cooled by the cutting fluid to reduce the generation of burrs. At the same time, the cutting fluid sprayed onto the workpiece lubricates and cools the workpiece, and then flows into the inner cavity of the filter box 12 with debris, and then the cutting fluid is filtered by the filter box 12. The filtered cutting fluid flows back to the inner cavity of the storage box 14 through a number of water inlet holes 13, waiting to be used again.

[0041] The working principle of the sheet metal stamping device is described in detail below.

[0042] like Figure 1-5 As shown, when the sheet metal needs to be stamped, first, according to the stamping needs of the sheet metal, the position height of the mold bottom 451 in the inner cavity of the upper mold 7 is adjusted, and the electric push rod 43 is operated, and then the output end of the electric push rod 43 is used to push the wedge block 1 44 to slide in the inner cavity of the connecting seat 41, so that the wedge block 1 44 can apply a force to the lower part of the wedge block 2 452, so that the wedge block 2 452 can be driven to slide in the middle of the connecting seat 41, and then the wedge block 2 452 is used to drive the mold bottom 451 to slide in the inner cavity of the upper mold 7. When the wedge block 2 452 rises, it will drive the connecting block 1 454 to slide upward, so as to drive the spring 455 to stretch, so that the spring 455 can be used to relieve the pressure and vibration generated during the stamping process, reduce the damage such as cracks and deformation caused by stress concentration, and reduce the generation of burrs;

[0043] Next, the sheet metal to be punched is placed in the inner cavity of the upper die 7, and then the hydraulic cylinder 55 is operated, and the output end of the hydraulic cylinder 55 is used to push the slider 54 to slide in the inner cavity of the slide groove 53, and then the slider 54 is used to drive the lower die 8 to move toward the workpiece. Through the cooperation of the slide groove 53 and the slider 54, the lower die 8 can be prevented from being misaligned during the movement, so that the workpiece is prevented from being subjected to uneven force during punching, thereby causing the material to tear or break unevenly, and increasing the possibility of burr formation. Then, with the cooperation of the upper die 7 and the lower die 8, the workpiece can be punched;

[0044] During the process of stamping the workpiece, the water pump 61 is operated to transport the cutting fluid in the inner cavity of the storage box 14 to the nozzle 64 through the water pipe 62, and then the cutting fluid is sprayed toward the workpiece through the nozzle 64. The cutting fluid is used to lubricate and cool the stamped sheet metal to reduce the generation of burrs. At the same time, the cutting fluid sprayed to the workpiece will carry debris and flow into the inner cavity of the filter box 12 after lubricating and cooling the workpiece, and then the cutting fluid will be filtered by the filter box 12. The filtered cutting fluid will flow back to the inner cavity of the storage box 14 through a number of water inlet holes 13, waiting to be used again.

[0045] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A sheet metal stamping device, comprising a support seat (1); characterized in that: The lower end of the support seat (1) is fixedly connected to support feet (2) on all sides, the upper end of the support seat (1) is fixedly connected to a protective cover (3), the middle part of the upper end of the support seat (1) is fixedly connected to a lifting structure (4), the upper part of the lifting structure (4) is fixedly connected to a punching structure (5), the middle part of the punching structure (5) is fixedly connected to an upper die (7), the middle part of the support seat (1) and the punching structure (5) are fixedly connected to a lubrication structure (6), and the middle part of the punching structure (5) is fixedly connected to a lower die (8).

2. A sheet metal stamping device according to claim 1, characterized in that: A slide groove (11) is provided on one side of the upper portion of the support seat (1), the inner cavity of the slide groove (11) is slidably connected to a filter box (12), a bottom wall of the inner cavity of the slide groove (11) is provided with a plurality of water inlet holes (13), the lower portion of the support seat (1) is fixedly connected to a storage box (14), and the inner cavities of the water inlet holes (13) are all in communication with the inner cavity of the storage box (14).

3. A sheet metal stamping device according to claim 2, characterized in that: An observation window (141) is provided on one side of the storage box (14), and the observation window (141) is used to observe the water level of the liquid in the inner cavity of the storage box (14).

4. A sheet metal stamping device according to claim 1, characterized in that: The lifting structure (4) comprises a connecting seat (41), one side of the connecting seat (41) is fixedly connected to a baffle (42), an electric push rod (43) is placed in the inner cavity of the connecting seat (41), the electric push rod (43) is fixedly connected to the baffle (42), a wedge block (44) is slidably connected to the inner cavity of the connecting seat (41), an output end of the electric push rod (43) is fixedly connected to the wedge block (44), a base structure (45) is slidably connected to the middle of the connecting seat (41), and a side of the wedge block (44) close to the base structure (45) is in contact with the lower part of the base structure (45).

5. A sheet metal stamping device according to claim 4, characterized in that: The base structure (45) comprises a mold bottom (451), the lower end of the mold bottom (451) is fixedly connected to a wedge block 2 (452), the lower part of the wedge block 2 (452) is in contact with the side of the wedge block 1 (44) close to the wedge block 2 (452), the middle part of the wedge block 2 (452) is symmetrically fixedly connected to a connecting block 1 (454), the middle part of the connecting block 1 (454) is slidably connected to a guide rod (453), the lower end of the guide rod (453) is fixedly connected to a connecting block 2 (456), the lower end of the connecting block 2 (456) is fixedly connected to the upper end of the connecting seat (41), the outer surface of the guide rod (453) is wound with a spring (455), the spring (455) on the same side is located between the connecting block 1 (454) and the connecting block 2 (456), and the side of the spring (455) close to the connecting block 1 (454) is fixedly connected to the connecting block 1 (454).

6. A sheet metal stamping device according to claim 1, characterized in that: The stamping structure (5) comprises two support plates (51), the lower ends of the two support plates (51) are fixedly connected to the upper end of the connecting seat (41), the opposite surfaces of the two support plates (51) are fixedly connected with connecting blocks (52), the two connecting blocks (52) are fixedly connected to the upper die (7), the upper parts of the opposite surfaces of the two support plates (51) are provided with sliding grooves (53), the inner cavities of the two sliding grooves (53) are slidably connected with sliders (54), the upper ends of the two support plates (51) are fixedly connected with support plate (1), the middle part of the support plate (1) is fixedly connected with a hydraulic cylinder (55), and the output end of the hydraulic cylinder (55) passes through the upper end of the support plate (1) and extends to the lower part, the output end of the hydraulic cylinder (55) is fixedly connected to the upper end of the slider (54), and the lower end of the slider (54) is fixedly connected to the upper end of the lower die (8).

7. A sheet metal stamping device according to claim 6, characterized in that: The lubrication structure (6) comprises a water pump (61), the lower end of the water pump (61) being fixedly connected to the bottom wall of the inner cavity of the storage box (14), the output end of the water pump (61) being fixedly connected to a water pipe (62), the water pipe (62) being fixedly connected to the support seat (1), the output end of the water pipe (62) being fixedly connected to a transfer block (63), and the inner cavity of the water pipe (62) is in communication with the inner cavity of the transfer block (63), the side of the transfer block (63) close to the second support plate (51) is fixedly connected to the second support plate (51), the side of the transfer block (63) away from the water pipe (62) is rotatably connected to a spray head (64), and the inner cavity of the transfer block (63) is in communication with the inner cavity of the spray head (64).

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