Punching device and punching machine for automobile part production

Abstract

The stamping device comprises a stamping base, a lower supporting table is arranged at the upper end of the stamping base, a plurality of lower die mounting plates distributed in the length direction of the lower supporting table are arranged at the upper end of the lower supporting table, and a lower female die is mounted at the upper end of each lower die mounting plate; a lower hydraulic cylinder is mounted at the bottom in the lower die mounting plate and the stamping base; an upper stamping frame is arranged above the stamping base, a plurality of upper die mounting plates in one-to-one correspondence with the lower die mounting plates are movably arranged in the upper stamping frame, an upper convex die is arranged at the lower end of each upper die mounting plate, and an upper hydraulic cylinder is mounted between the upper die mounting plate and the top of the upper stamping frame; connecting sliding strips arranged in the length direction of the upper punching frame are connected to the two sides in the upper punching frame in a sliding mode, each connecting sliding strip is provided with a plurality of telescopic motors, and the free end of a telescopic shaft of each telescopic motor is provided with an extrusion block. The waiting time of the punching machine can be effectively shortened, and the overall efficiency of the punching production line is further improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of sheet metal stamping, and relates to a stamping device and a stamping machine for automobile parts production. Background Art

[0002] In the field of automobile manufacturing, the accuracy and production efficiency of parts are key indicators for measuring the performance of production lines. The manufacturing process of automobile parts usually includes multiple technological processes, among which stamping technology plays a crucial role. As an important device for realizing the forming of metal sheets, an automobile parts stamping machine is widely used in the manufacturing of vehicle bodies, chassis and other key components by placing metal sheets in a mold and applying pressure to deform them into parts with the required shapes and sizes.

[0003] Traditionally, the complex shapes of automobile parts often require multiple stamping processes to be finally completed. Each stamping process aims to deform the material in a specific direction or to a specific degree to gradually approach the final form required by the design. Since a single stamping process is difficult to meet the accuracy requirements of complex shapes, in actual production, multiple stamping machines with different functions usually need to work together, and each stamping machine is responsible for one or several specific forming steps. Although this multi-process stamping method can ensure the high-quality standards of the final product, it also means that workpieces need to be transferred frequently between processes.

[0004] In the past, the transfer of sheets between these intermediate processes mainly relied on manual operation, that is, workers manually carried the sheets from one stamping machine to the next. This method not only has a high labor intensity and low work efficiency, but also has certain safety hazards. In order to improve production efficiency and reduce labor costs, automated robotic arms have been used in recent years to replace manual labor for automatic transfer of sheets. Although automated transfer significantly increases the production speed and reduces the possibility of human errors, in the existing system, whether it is manual transfer or robotic arm transfer, it will cause the stamping machine to be idle during the waiting for sheet transfer, which undoubtedly limits the overall stamping efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a stamping device and a stamping machine for automobile parts production, which adopt an integrated sheet transfer structure design, can effectively shorten the waiting time of the stamping machine, and further improve the overall efficiency of the stamping production line.

[0006] To solve the above technical problems, the present invention provides a stamping device, including a stamping base. An upper support table is arranged at the upper end of the stamping base. A plurality of lower die mounting plates distributed along its length direction are arranged at the upper end of the lower support table. A lower female die is mounted at the upper end of each lower die mounting plate. A lower lifting frame is movably arranged in the stamping base. A plurality of lower hydraulic cylinders are installed at the bottom in the stamping base and the lower lifting frame. A vertical connecting bar connected to the lower lifting frame is downwardly arranged at the lower end of each lower die mounting plate. The lower support table is provided with a plurality of lifting sliding holes corresponding to and slidably connected to the vertical connecting bars one by one.

[0007] An upper stamping frame is arranged above the stamping base. An upper lifting frame is movably arranged in the upper stamping frame. A plurality of upper hydraulic cylinders are installed between the upper end of the upper lifting frame and the top in the upper stamping frame. A plurality of upper die mounting plates corresponding to the lower die mounting plates one by one are arranged at the lower end of the upper lifting frame. An upper male die cooperating with the corresponding lower female die is arranged at the lower end of each upper die mounting plate.

[0008] Connecting sliding bars arranged along its length direction are slidably connected to both sides in the upper stamping frame. Each connecting sliding bar is located on both sides between the lower female die and the upper male die. A sliding driving motor for driving the connecting sliding bars to slide one by one is installed in the upper stamping frame. A plurality of telescopic motors corresponding to the lower female dies one by one are installed inwardly on each connecting sliding bar. An extrusion block is arranged at the free end of the telescopic shaft of each telescopic motor.

[0009] By adopting the above technical solution, when stamping a sheet metal, first place a sheet metal into the lower female die of the first process. The lower hydraulic cylinder and the upper hydraulic cylinder extend simultaneously, driving the lower lifting frame and the upper lifting frame to approach each other in the middle. Finally, it drives the lower female die and the upper male die to engage, stamping the sheet metal into the required first-step shape. After one stamping is completed, the lower hydraulic cylinder and the upper hydraulic cylinder shorten simultaneously, separating the lower female die and the upper male die. The stamped sheet metal is lifted by the top bar, facilitating the clamping by the extrusion block. At this time, the telescopic motor extends to push the extrusion block close to the sheet metal to clamp it. Then, with the sliding of the connecting sliding bar, the sheet metal is transferred above the lower female die of the next process. The telescopic motor shortens, causing the sheet metal to fall into the lower female die, and then the next stamping process is carried out. Repeat this stamping and transfer process until all stamping is completed. The stamped parts are placed down from the tail end of the stamping base by the extrusion block.

[0010] The present invention is further arranged such that sliding top holes are opened downwardly through each lower female die and the corresponding lower die mounting plate. A plurality of top bars slidably connected to the sliding top holes one by one are upwardly arranged on the lower support table. The upper end of each top bar is matched with the shape of the bottom in the corresponding lower female die.

[0011] The present invention is further configured such that each extrusion block is of a hollow structure. A plurality of telescopic holes are formed in one side of each extrusion block away from the corresponding telescopic motor. A plurality of telescopic limiting shafts corresponding to the telescopic holes one by one are connected inside each extrusion block. Each telescopic limiting shaft includes an outer sleeve tube connected to the bottom inside the corresponding extrusion block, and a limiting inner shaft that is slidably connected to the inner wall of the corresponding outer sleeve tube and extends out of the corresponding telescopic hole. A pressure ring is provided on each limiting inner shaft inside the corresponding extrusion block, and a support spring is sleeved on each outer sleeve tube and is located between the corresponding pressure ring and the inner wall of the corresponding extrusion block.

[0012] The present invention is further configured such that a plurality of telescopic connecting shafts are connected between each extrusion block and the corresponding connecting slide bar.

[0013] The present invention is further configured such that one end of the stamping base is horizontally and outwardly provided with a sheet placing table. Slide rails connected to the corresponding connecting slide bars are provided on both sides inside the upper stamping frame. Each slide rail extends above the sheet placing table. The number of telescopic motors on each connecting slide bar is equal to the sum of the number of all lower die cavities and the number of the sheet placing tables.

[0014] The present invention is further configured such that each sliding drive motor is a linear motor arranged along the length direction of the corresponding connecting slide bar. A plurality of rotors connected to the corresponding connecting slide bar are slidably connected to the magnetic rail of each linear motor.

[0015] The present invention is further configured such that each telescopic motor is a voice coil motor.

[0016] The present invention also discloses a stamping machine for automobile part production. Central openings are formed below the corresponding lower die cavities through each lower die mounting plate. A plurality of material leakage openings are formed below each lower die mounting plate on the lower support table. A plurality of material discharging openings are formed through the lower lifting frame. A conveyor arranged along its length direction is provided below the lower lifting frame inside the stamping base. An aggregate tank is provided at one end of the stamping base and is located below the free end of the conveyor. A plurality of shearing sieve holes are formed by penetrating downward through the bottom of the aggregate tank. One end of the lower lifting frame is connected with a pressing and cutting plate located above the aggregate tank. A plurality of pressing blocks corresponding to the shearing sieve holes one by one are arranged downward at the lower end of the pressing and cutting plate;

[0017] At the upper end of the lower support table in the end process, a sliding stamping seat is slidably connected to the outer periphery of the corresponding lower die. Each sliding stamping seat slides towards the corresponding lower die. On one side of each sliding stamping seat facing the corresponding lower die, a side stamping die is detachably connected. At the upper end of the lower support table here, connection seats are provided on both sides of each sliding stamping seat. Each connection seat is provided with a connection sliding hole towards the corresponding sliding stamping seat. Each sliding stamping seat is provided with two connection sliding shafts respectively slidingly connected to the corresponding connection sliding holes outward. A limit cap is provided at the free end of each connection sliding shaft. A return spring sleeving the corresponding connection sliding shaft is provided between each limit cap and the corresponding connection seat. On the side of each sliding stamping seat away from the corresponding lower die, there is a pressure-receiving inclined surface that is outward and downward. On the upper die mounting plate in the end process, a plurality of stamping strips corresponding to the sliding stamping seats one by one are provided downward on the outer periphery of the corresponding upper punch. On one side of each stamping strip facing the corresponding upper punch, a pressure-applying inclined surface that cooperates with the corresponding pressure-receiving inclined surface is provided.

[0018] By adopting the above technical solution, during the stamping process, if the lower die has a stamping hole, when the lower die cooperates with the upper punch for stamping, the punching of the stamping sheet material is carried out. The remaining material falling after punching can gradually fall downward through the middle opening, the material leakage port and the blanking port onto the conveyor. The conveyor gradually conveys the remaining material and drops it into the aggregate trough. The smaller remaining material directly passes through the shearing sieve holes and drops onto the discharge inclined plate. The larger remaining material remains in the aggregate trough. Each time the lower hydraulic cylinder shortens and drives the lower lifting frame to descend, it drives the pressure cutting plate to move down into the aggregate trough, so that the pressure cutting block is inserted into the shearing sieve holes, and the remaining material in the aggregate trough is pressure cut to make it broken and fall onto the discharge inclined plate and then discharged outward along it, so that the finally discharged remaining material is smaller broken materials, which is more convenient for collection and transfer.

[0019] When it comes to the last process of stamping and it is necessary to shape or punch the side wall of the part, the lower die is engaged with the upper punch, driving the stamping strip to move down and contact the sliding stamping seat. After the pressure-applying inclined surface gradually contacts the pressure-receiving inclined surface, it can push the sliding stamping seat to compress the return spring, making the side stamping die gradually approach the lower die, and shaping or punching the side plate of the part. When the lower die and the upper punch move away from each other, the stamping strip moves up, and under the action of the return spring, it drives the sliding stamping seat to reset outward to prepare for the next stamping.

[0020] The present invention is further configured such that the stamping base is provided with a discharge inclined plate that is outward and downward inclined below the aggregate trough.

[0021] The present invention is further configured such that the aggregate trough is provided with a guide plate that is towards its inner wall and downward below the free end of the conveyor.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] First, compared with the traditional methods of manually transferring or using a robotic arm to transfer sheets, the present invention adopts an integrated transfer mechanism. After each stamping operation, the stamped sheet is lifted upward by a top bar to keep it in the middle position without moving up and down. Subsequently, the telescopic motor drives the extrusion blocks on both sides to clamp the two sides of the stamped sheet. Then, through the reciprocating movement of the connecting slide bar, the stamped sheet is driven to move to the next process position. After the stamped sheet is placed down, the connecting slide bar reciprocates according to the stamping rhythm, ultimately driving the stamped sheet to be gradually and quickly transferred along with the process. This can effectively shorten the waiting time of the stamping machine and further improve the overall efficiency of the stamping production line.

[0024] Second, when clamping the edge of the stamped sheet, the edge of the stamped sheet can be inserted between the limit inner shafts. And when the edge of the stamped sheet contacts the limit inner shafts, it can push them back into the extrusion blocks, realizing a firm connection to the edge of the stamped sheet.

[0025] Third, during the stamping process, if stamping scraps are generated, the scraps gradually fall onto the conveyor. The conveyor gradually conveys the scraps into the aggregate trough. During each stamping process, the pressing and cutting plate can be driven to reciprocate up and down. When the pressing and cutting plate moves downward, it can drive the pressing and cutting block to insert into the shearing sieve holes to press and cut the scraps in the aggregate trough, causing them to break and fall onto the discharge inclined plate and then be discharged outwards. The finally discharged scraps are smaller pieces. Compared with scraps of different sizes and shapes, the smaller and more fragmented scraps are easier to collect and transfer using tools.

[0026] Fourth, in the final stage of the stamping process, when it is necessary to shape or punch the side wall of the part, each time the upper punch moves downward, it can drive the stamping bar to move downward and contact the sliding stamping seat, pushing the sliding stamping seat to drive the side stamping die to gradually approach the lower die, quickly shaping or punching the side plate of the part. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the overall structural schematic diagram of the present invention;

[0028] Figure 2 is a partial cross-sectional view for showing the internal structure of the stamping base Figure 1 ;

[0029] Figure 3 is a partial cross-sectional view for showing the internal structure of the stamping base Figure 2 ;

[0030] Figure 4 is used to show the connection between the lower die mounting plate and the lower die at the end of the process;

[0031] Figure 5 is used to show the internal structure of the upper stamping frame;

[0032] Figure 6 Used to show the connection between the connecting slider, the sliding drive motor and the extrusion block;

[0033] Figure 7 It is a partial cross-sectional view used to show the internal structure of the extrusion block;

[0034] Figure 8 Used to show the telescopic holes on the extrusion block.

[0035] Among them, 1. Stamping base; 2. Plate placing table; 3. Lower support table; 4. Lower die mounting plate; 5. Lower female die; 6. Lower lifting frame; 7. Lower hydraulic cylinder; 8. Vertical connecting bar; 9. Lifting slide hole; 10. Upper stamping frame; 11. Upper lifting frame; 12. Upper hydraulic cylinder; 13. Upper die mounting plate; 14. Upper male die; 15. Sliding top hole; 16. Top bar; 17. Connecting slider; 18. Slide rail; 19. Linear motor; 20. Rotor; 21. Telescopic motor; 22. Extrusion block; 23. Telescopic connecting shaft; 24. Telescopic hole; 25. Outer sleeve; 26. Limit inner shaft; 27. Pressure ring; 28. Support spring; 29. Middle opening; 30. Material leakage port; 31. Material discharging port; 32. Conveyor; 33. Aggregate tank; 34. Guide plate; 35. Shearing sieve hole; 36. Press cutting plate; 37. Press cutting block; 38. Discharge inclined plate; 39. Sliding stamping seat; 40. Side stamping die; 41. Connecting seat; 42. Connecting slide hole; 43. Connecting slide shaft; 44. Limit cap; 45. Return spring; 46. Compressed inclined surface; 47. Stamping bar; 48. Pressing inclined surface. Specific embodiments

[0036] The following further elaborates on a stamping device and a stamping machine for automobile part production proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the attached drawings are all in a very simplified form and use non-precise scales, only for conveniently and clearly assisting in explaining the purpose of the embodiments of the present invention. The same or similar reference numerals in the drawings represent the same or similar components.

[0037] Embodiment, referring to Figure 1-8, a stamping device and a stamping machine for automotive part production, including a stamping base 1. One end of the stamping base 1 is horizontally and outwardly provided with a sheet placing table 2 for placing the sheet to be stamped. The upper end of the stamping base 1 is provided with a lower support table 3. The upper end of the lower support table 3 is provided with four lower die mounting plates 4 distributed along its length direction. The upper end of each lower die mounting plate 4 is installed with a lower die 5. The lower die 5 can be replaced according to the shape of the automotive part, and in the direction away from the sheet placing table 2, the shape of the lower die 5 is gradually improved. A lower lifting frame 6 is movably arranged in the stamping base 1. Multiple lower hydraulic cylinders 7 are installed between the lower lifting frame 6 and the bottom in the stamping base 1. Two lower hydraulic cylinders 7 are provided below each lower support table 3. Two vertical connecting bars 8 connected to the lower lifting frame 6 are downwardly arranged at the lower end of each lower die mounting plate 4. The lower support table 3 is provided with two lifting sliding holes 9 corresponding to and slidably connected to the vertical connecting bars 8 one by one.

[0038] Above the stamping base 1, an upper stamping frame 10 is provided. The lower edge of the upper stamping frame 10 is connected to both sides of the stamping base 1. An upper lifting frame 11 is movably arranged in the upper stamping frame 10. Multiple upper hydraulic cylinders 12 are installed between the upper end of the upper lifting frame 11 and the top in the upper stamping frame 10. Four upper die mounting plates 13 corresponding to the lower die mounting plates 4 one by one are provided at the lower end of the upper lifting frame 11. Two upper hydraulic cylinders 12 are provided above each upper die mounting plate 13. A upper punch 14 matching the corresponding lower die 5 is provided at the lower end of each upper die mounting plate 13. In the direction away from the sheet placing table 2, the shape of the upper punch 14 is gradually improved, so that the lower die 5 and the upper punch 14 cooperate to stamp the sheet into the required part shape through four stamping processes.

[0039] Two sliding top holes 15 are formed through each lower die block 5 downward. Two top bars 16 that are slidably connected to the sliding top holes 15 one by one are arranged upward on the lower support table 3. The upper ends of each top bar 16 are matched with the shape of the bottom in the corresponding lower die block 5, so that when the upper ends of the top bars 16 and the bottom in the lower die block 5 form a complete bottom, it does not affect the cooperation between the upper punch 14 and the lower die block 5 to punch the sheet. On both sides inside the upper punching frame 10, a connecting slide bar 17 arranged along its length direction is slidably connected. On both sides inside the upper punching frame 10, a slide rail 18 connected to the corresponding connecting slide bar 17 is arranged. Each slide rail 18 extends above the sheet placing table 2. Each connecting slide bar 17 is located on both sides between the lower die block 5 and the upper punch 14. A sliding driving motor for driving the corresponding connecting slide bar 17 to slide one by one is installed inside the upper punching frame 10. Each sliding driving motor is a linear motor 19 arranged along the length direction of the connecting slide bar 17. Three rotors 20 connected to the corresponding connecting slide bar 17 are slidably connected to the magnetic track of each linear motor 19. Using the linear motor 19 can achieve faster sliding of the connecting slide bar 17.

[0040] Five telescopic motors 21 corresponding to the lower die blocks 5 one by one are installed inwardly on each connecting slide bar 17. The number of telescopic motors 21 on each connecting slide bar 17 is equal to the sum of the number of all lower die blocks 5 and the number of sheet placing tables 2. In order to improve the telescopic speed of the telescopic motor 21, the voice coil motor is selected as the telescopic motor 21. A pressing block 22 is arranged at the free end of the telescopic shaft of each telescopic motor 21. Two telescopic connecting shafts 23 are connected between each pressing block 22 and the corresponding connecting slide bar 17. Each pressing block 22 is a hollow structure. A number of telescopic holes 24 distributed in an array are formed on one side of each pressing block 22 away from the corresponding telescopic motor 21. A plurality of telescopic limiting shafts corresponding to the telescopic holes 24 one by one are connected inside each pressing block 22. Each telescopic limiting shaft includes an outer sleeve 25 connected to the bottom inside the corresponding pressing block 22, and a limiting inner shaft 26 that is slidably connected to the inner wall of the corresponding outer sleeve 25 and extends out of the corresponding telescopic hole 24. A pressure ring 27 is arranged on each limiting inner shaft 26 inside the corresponding pressing block 22. A support spring 28 located between the corresponding pressure ring 27 and the inner wall of the corresponding pressing block 22 is sleeved on each outer sleeve 25. Through the protruding limiting inner shafts 26, the non-linear edges of the punched sheet can be caught between the limiting inner shafts 26, and when the edge of the punched sheet touches the limiting inner shafts 26, it can be squeezed and pushed back into the pressing block 22 to achieve stable connection of the edge of the punched sheet.

[0041] A central opening 29 is provided below each lower die mounting plate 4 corresponding to the lower die cavity 5. A plurality of material leakage openings 30 are provided below each lower die mounting plate 4 on the lower support table 3. A plurality of material discharge openings 31 are provided through the lower lifting frame 6, so that the remaining materials dropped during stamping can gradually drop downward through the central opening 29, the material leakage openings 30 and the material discharge openings 31. A conveyor 32 arranged along its length direction is provided below the lower lifting frame 6 in the stamping base 1. The conveyor 32 cannot use a belt conveyor to prevent the remaining materials of the sheet from falling on it and damaging the conveyor belt. An aggregate chute 33 is provided at one end of the stamping base 1 below the free end of the conveyor 32. A guide plate 34 with its inner wall and downward direction is provided below the free end of the conveyor 32 in the aggregate chute 33, so that the remaining materials on the conveyor 32 can finally fall into the aggregate chute 33. A plurality of shearing sieve holes 35 are provided through the bottom of the aggregate chute 33 downward. One end of the lower lifting frame 6 is connected with a pressing plate 36 located above the aggregate chute 33. A plurality of pressing blocks 37 corresponding to the shearing sieve holes 35 one by one are provided downward at the lower end of the pressing plate 36. The pressing blocks 37 cooperate with the shearing sieve holes 35 to be able to press and cut the larger remaining materials falling into the aggregate chute 33 into smaller and more fragmented remaining materials. A discharge inclined plate 38 inclined outward and downward is provided below the aggregate chute 33 in the stamping base 1, so that the final small remaining materials can slide out from the discharge inclined plate 38.

[0042] At the upper end of the lower support table 3 in the end process, four sliding stamping seats 39 are slidably connected to the outer periphery of the corresponding lower die 5. Each sliding stamping seat 39 slides towards the corresponding lower die 5. On one side of each sliding stamping seat 39 facing the corresponding lower die 5, a side stamping die 40 is detachably connected. When it is necessary to shape or punch holes in the side of the part, the corresponding side stamping die 40 is installed on the sliding stamping seat 39. Here, at both sides of each sliding stamping seat 39 at the upper end of the lower support table 3, a connecting seat 41 is provided. Each connecting seat 41 is provided with a connecting sliding hole 42 facing the corresponding sliding stamping seat 39. Each sliding stamping seat 39 is provided with two connecting sliding shafts 43 respectively slidably connected to the corresponding connecting sliding holes 42 on the outside. At the free end of each connecting sliding shaft 43, a limit cap 44 is provided. Between each limit cap 44 and the corresponding connecting seat 41, a return spring 45 sleeved on the corresponding connecting sliding shaft 43 is provided. The return spring 45 drives the sliding stamping seat 39 away from the lower die 5. On one side of each sliding stamping seat 39 away from the corresponding lower die 5, there is a pressure-receiving inclined surface 46 which is arranged outwards and downwards. On the lower die mounting plate 13 in the end process, four stamping strips 47 corresponding to the sliding stamping seats 39 are arranged downwards on the outer periphery of the corresponding upper punch 14. On one side of each stamping strip 47 facing the corresponding upper punch 14, a pressure-applying inclined surface 48 which is matched with the corresponding pressure-receiving inclined surface 46 is provided. After the pressure-applying inclined surface 48 gradually contacts the pressure-receiving inclined surface 46, it can push the sliding stamping seat 39 to compress the return spring 45, so that it gradually approaches the lower die 5.

[0043] Working principle: When stamping automotive parts, first cut the sheet into the required shape and gradually place it on the sheet placement table 2. During each stamping process, the sliding drive motor can drive the connecting slide bar 17 to make a reciprocating slide. When the extrusion block 22 at the end is driven to move to the placement table position, the telescopic motor 21 extends to push the extrusion block 22 close to the sheet, so that the edge of the sheet is inserted between the limit inner shafts 26. If the sheet contacts the end of the limit inner shaft 26, the limit inner shaft 26 can be pushed into the inside of the extrusion block 22, and finally the limit inner shaft 26 cooperates to clamp the edge of the sheet, and then it is transferred to the position of the lower die 5 in the first process along with the sliding of the connecting slide bar 17. The telescopic motor 21 shortens, and the sheet is drawn out and dropped between the limit inner shafts 26. Due to the shape of the lower die 5, the edge of the sheet is limited, and finally it gradually reaches the most fitting position inside the lower die 5;

[0044] The lower hydraulic cylinder 7 and the upper hydraulic cylinder 12 extend simultaneously, driving the lower lifting frame 6 and the upper lifting frame 11 to move closer to each other in the middle. Finally, the lower female die 5 and the upper male die 14 are engaged to stamp the sheet metal into the required first-step shape. After one stamping is completed, the lower hydraulic cylinder 7 and the upper hydraulic cylinder 12 shorten simultaneously, causing the lower female die 5 and the upper male die 14 to move away from each other. The stamped sheet metal is lifted by the top bar 16 to facilitate clamping by the extrusion block 22. At this time, the telescopic motor 21 extends to push the extrusion block 22 closer to the sheet metal, so that the edge of the sheet metal is inserted between the limit inner shafts 26. Then, with the sliding of the connecting slide bar 17, the sheet metal is transferred above the lower female die 5 of the downward transfer process. The telescopic motor 21 shortens, causing the sheet metal to be withdrawn from between the limit inner shafts 26 and fall into the lower female die 5. Then, the next stamping process is carried out. This stamping and transfer process is repeated until all stamping is completed. The stamped parts are placed down from the tail end of the stamping base 1 by the extrusion block 22;

[0045] During the stamping process, if the lower female die 5 has a stamping hole, when the lower female die 5 and the upper male die 14 cooperate for stamping, the stamping sheet metal is punched. The remaining material that falls off during punching can gradually fall downward through the middle opening 29, the material leakage port 30, and the blanking port 31 onto the conveyor 32. The conveyor 32 gradually conveys the remaining material and drops it into the aggregate trough 33. The smaller remaining material directly passes through the shearing sieve holes 35 and drops onto the discharge inclined plate 38, while the larger remaining material remains in the aggregate trough 33. Each time the lower hydraulic cylinder 7 shortens to drive the lower lifting frame 6 to descend, it drives the pressure cutting plate 36 to move down into the aggregate trough 33, causing the pressure cutting block 37 to insert into the shearing sieve holes 35 to cut and press the remaining material in the aggregate trough 33, so that it is broken and falls onto the discharge inclined plate 38 and is discharged outwards along it, making the finally discharged remaining material into smaller broken materials, which is more convenient for collection and transfer;

[0046] When reaching the last stamping process and it is necessary to shape or punch the side wall of the part, the lower female die 5 and the upper male die 14 are engaged, driving the stamping bar 47 to move down and contact the sliding stamping seat 39. After the pressure application inclined surface 48 gradually contacts the pressure-receiving inclined surface 46, it can push the sliding stamping seat 39 to compress the return spring 45, causing the side stamping die 40 to gradually approach the lower female die 5 to shape or punch the side plate of the part. When the lower female die 5 and the upper male die 14 move away from each other, the stamping bar 47 moves up, and under the action of the return spring 45, it drives the sliding stamping seat 39 to reset outwards for the next stamping.

[0047] It should also be supplemented and explained that all "settings" and similar descriptive words in this application (especially in the specification) express that there is a connection relationship between two structures, but there is no excessive limitation on the specific means by which the two are connected, and usually it is a conventional connection means, that is, it should be understood that this means is the prior art and does not need to be elaborated too much. For example, "n is provided on m" only expresses that there is an n structure on the m structure, and whether the two are connected by welding, riveting, adhesive connection or integral molding is within the protection scope of this application; another example is "y is rotatably provided on x", which only expresses that y and x can rotate relative to each other, and as for whether the two are rotatably connected by a bearing, or y directly passes through x and is rotatably connected to x, or other achievable ways, they are all within the protection scope of this application.

[0048] The above description is only a description of the preferred embodiments of the present invention, and does not impose any limitation on the scope of the present invention. Any changes and modifications made by those of ordinary skill in the art of the present invention based on the above disclosure are within the protection scope of the claims.

Claims

1. A stamping device, comprising a stamping base (1), characterized in that, The upper end of the stamping base (1) is provided with a lower support table (3). The upper end of the lower support table (3) is provided with a plurality of lower die mounting plates (4) distributed along its length direction. The upper end of each lower die mounting plate (4) is installed with a lower female die (5). A lower lifting frame (6) is movably arranged in the stamping base (1). A plurality of lower hydraulic cylinders (7) are installed at the bottom in the stamping base (1) between the lower lifting frame (6) and the stamping base (1). The lower end of each lower die mounting plate (4) is downwardly provided with a vertical connecting strip (8) connected to the lower lifting frame (6). The lower support table (3) is provided with a plurality of lifting sliding holes (9) corresponding to and slidably connected to the vertical connecting strips (8) one by one; An upper stamping frame (10) is arranged above the stamping base (1). An upper lifting frame (11) is movably arranged in the upper stamping frame (10). A plurality of upper hydraulic cylinders (12) are installed between the upper end of the upper lifting frame (11) and the top in the upper stamping frame (10). The lower end of the upper lifting frame (11) is provided with a plurality of upper die mounting plates (13) corresponding to the lower die mounting plates (4) one by one. The lower end of each upper die mounting plate (13) is provided with an upper male die (14) matching the corresponding lower female die (5); On both sides in the upper stamping frame (10), there are sliding connection strips (17) arranged along its length direction. Each sliding connection strip (17) is located on both sides in the middle of the lower female die (5) and the upper male die (14). A sliding driving motor for driving the sliding connection strips (17) to slide one by one is installed in the upper stamping frame (10). Each sliding connection strip (17) is inwardly installed with a plurality of telescopic motors (21) corresponding to the lower female die (5) one by one. The free end of the telescopic shaft of each telescopic motor (21) is provided with a pressing block (22).

2. The stamping device according to claim 1, characterized in that, A sliding top hole (15) is opened through each lower female die (5) and the corresponding lower die mounting plate (4) downward. The lower support table (3) is upwardly provided with a plurality of top strips (16) corresponding to and slidably connected to the sliding top holes (15) one by one. The upper end of each top strip (16) matches the shape of the bottom in the corresponding lower female die (5).

3. The stamping device according to claim 1, characterized in that, Each pressing block (22) is of a hollow structure. A plurality of telescopic holes (24) are opened on one side of each pressing block (22) away from the corresponding telescopic motor (21). A plurality of telescopic limiting shafts corresponding to the telescopic holes (24) one by one are connected inside each pressing block (22). Each telescopic limiting shaft includes an outer sleeve (25) connected to the bottom in the corresponding pressing block (22), a limiting inner shaft (26) slidably connected to the inner wall of the corresponding outer sleeve (25) and extending through the corresponding telescopic hole (24). Each limiting inner shaft (26) is provided with a pressure ring (27) in the corresponding pressing block (22). Each outer sleeve (25) is sleeved with a support spring (28) located between the corresponding pressure ring (27) and the inner wall of the corresponding pressing block (22).

4. A stamping device according to claim 1, characterized in that, A plurality of telescopic connection shafts (23) are connected between each pressing block (22) and the corresponding sliding connection strip (17).

5. A stamping device according to claim 1, characterized in that, One end of the stamping base (1) is horizontally and outwardly provided with a sheet placing table (2). On both sides inside the upper stamping frame (10), there are slide rails (18) connected to the corresponding connecting slide bars (17). Each slide rail (18) extends above the sheet placing table (2). The number of telescopic motors (21) on each connecting slide bar (17) is equal to the sum of the number of all lower die cavities (5) and the number of the sheet placing tables (2).

6. The stamping device according to claim 1, characterized in that, Each sliding drive motor is a linear motor (19) arranged along the length direction of the connecting slide bar (17). On the magnetic rail of each linear motor (19), there are a plurality of movers (20) slidably connected to the corresponding connecting slide bar (17).

7. A stamping device according to claim 1, characterized in that, Each telescopic motor (21) is a voice coil motor.

8. A stamping machine for the production of automotive parts, based on the stamping device according to any one of claims 1-7, characterized in that, A central opening (29) is opened below the corresponding lower die cavity (5) through each lower die mounting plate (4). The lower support table (3) is provided with a plurality of material leakage openings (30) below each lower die mounting plate (4). A plurality of material discharging openings (31) are opened through the lower lifting frame (6). Inside the stamping base (1) and below the lower lifting frame (6), there is a conveyor (32) arranged along its length direction. At one end of the stamping base (1), there is an aggregate chute (33) located below the free end of the conveyor (32). A plurality of shearing sieve holes (35) are opened downward through the bottom of the aggregate chute (33). One end of the lower lifting frame (6) is connected with a pressing and cutting plate (36) located above the aggregate chute (33). At the lower end of the pressing and cutting plate (36), there are a plurality of pressing blocks (37) corresponding to the shearing sieve holes (35) one by one; At the upper end of the lower support table (3) in the tail-end process, a sliding stamping seat (39) is slidably connected to the outer periphery of the corresponding lower die cavity (5). Each sliding stamping seat (39) slides towards the corresponding lower die cavity (5). On one side of each sliding stamping seat (39) facing the corresponding lower die cavity (5), a side stamping die (40) is detachably connected. At the upper end of the lower support table (3) here, connecting seats (41) are arranged on both sides of each sliding stamping seat (39). Each connecting seat (41) is provided with a connecting slide hole (42) towards the corresponding sliding stamping seat (39). Each sliding stamping seat (39) is provided with two connecting slide shafts (43) slidably connected to the corresponding connecting slide holes (42) outwardly. A limit cap (44) is arranged at the free end of each connecting slide shaft (43). A return spring (45) sleeving the corresponding connecting slide shaft (43) is arranged between each limit cap (44) and the corresponding connecting seat (41). On the side of each sliding stamping seat (39) away from the corresponding lower die cavity (5), there is a pressure-receiving inclined surface (46) arranged outwardly and downwardly. On the outer periphery of the corresponding upper punch (14) of the upper die mounting plate (13) in the tail-end process, there are a plurality of stamping bars (47) corresponding to the sliding stamping seats (39) arranged downwardly. On one side of each stamping bar (47) facing the corresponding upper punch (14), there is a pressure-applying inclined surface (48) matching the corresponding pressure-receiving inclined surface (46).

9. A punching machine for manufacturing automotive parts according to claim 8, characterized in that, The stamping base (1) is provided with a discharge chute (38) that slopes outward and downward below the aggregate chute (33).

10. A punching machine for automobile part production according to claim 8, characterized in that, The aggregate chute (33) is provided with a material guide plate (34) that slopes towards its inner wall and downward below the free end of the conveyor (32).

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