A stamping die for arc-shaped sheet metal workpiece

Abstract

The present invention relates to the field of dies, and specifically to a stamping die for arc-shaped sheet metal workpieces, comprising a bottom plate, one end of the bottom plate being fixedly connected to a side plate, a cross plate being fixedly connected to the center of one side of the side plate, the cross plate and the bottom plate being located on the same side of the side plate, a sliding seat being slidably connected to the top of the cross plate, a cutting assembly being provided at the connection between the sliding seat and the cross plate, and a top plate being fixedly connected to one side of the top of the side plate. The present invention is used to solve the defects of existing stamping dies for arc-shaped sheet metal workpieces in the special case where it is inconvenient for technicians to manually demould. Existing stamping dies used in such environments often have the disadvantage of low processing efficiency. On the one hand, the processing efficiency is reduced because the processes of feeding, cutting and demoulding are carried out separately. On the other hand, after the workpiece is processed into a sleeve, the sleeve is put on the die, which makes demoulding very inconvenient and the sleeve is easily stuck on the die.

Description

Technical Field

[0001] The invention relates to the field of moulds, in particular to a stamping mould for an arc-shaped sheet metal workpiece. Background Art

[0002] Stamping dies are special process equipment used to process materials (metal or non-metal) into parts (or semi-finished products) during cold stamping. They are widely used in the processing industry, including arc-shaped sheet metal workpieces, and the processing of sleeves also adopts stamping processing methods.

[0003] However, the existing stamping dies for arc-shaped sheet metal workpieces still have certain defects when processing sleeves, especially for arc-shaped sheet metal workpiece stamping dies used in some special environments, such as when it is inconvenient for technicians to manually demould. The existing stamping dies used in such environments often have the disadvantage of low processing efficiency. On the one hand, the processing efficiency is reduced because the loading, cutting and demoulding processes are carried out separately. On the other hand, after the workpiece is processed into a sleeve, the sleeve is put on the mold, which makes demoulding very inconvenient and the sleeve is easily stuck on the mold. For this reason, we propose a stamping die for arc-shaped sheet metal workpieces to solve the above problems. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a stamping die for a curved sheet metal workpiece.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a stamping die for an arc-shaped sheet metal workpiece, comprising a bottom plate, one end side of the bottom plate is fixedly connected to a side plate, a side center of the side plate is fixedly connected to a cross plate, the cross plate and the bottom plate are located on the same side of the side plate, the top of the cross plate is slidably connected to a sliding seat, a cutting assembly is provided at the connection between the sliding seat and the cross plate, one side of the top of the side plate is fixedly connected to a top plate, the top plate and the cross plate are located on the same side of the side plate, a rhombus plate is slidably connected to the top plate, the rhombus plate is fixedly connected to a stamping table through a connecting piece slidably connected to the top plate, a pressing block is fixedly connected to the bottom of the stamping table, a stamping seat is slidably connected to the stamping table and the stamping seat passes through the bottom of the stamping table, a limiting column is fixedly connected to the top of the stamping seat, a shock-absorbing spring is sleeved on the limiting column, the upper and lower ends of the shock-absorbing spring are respectively fixedly connected to the top of the stamping seat and the inner wall plate of the stamping table, the pressure The block and the stamping seat are respectively located at the two ends of the bottom of the stamping table, the pressing block is transmission connected to the sliding seat, one end of the sliding seat is provided with a semicircular groove, and one side of the bottom of the stamping seat is provided with a quarter-circular groove, and a fixing rod is fixedly connected at the center of the side of the side plate, the fixing rod and the semicircular groove opened at one end of the sliding seat are at the same height, and the center of the fixing rod and the quarter-circular groove opened on one side of the bottom of the stamping seat are located on the same vertical line, one end of the sliding seat is provided with a semicircular groove, and one side of the bottom of the stamping seat is provided with a quarter-circular groove, the radius of which is greater than the radius of the fixing rod, the fixing rod is sleeved with a demolding assembly, the demolding assembly is arranged on the side plate, and the end of the bottom plate away from the side plate is rotatably connected to a loading seat through a connecting piece fixedly connected to the bottom plate, and a loading assembly is provided on the connecting piece fixed to the bottom plate to which the loading seat is rotatably connected, and the loading assembly is transmission connected to the stamping seat.

[0006] Preferably, the demolding assembly includes a demolding ring, a sliding plate, an inclined column, a fixed plate, a sliding column, an L-shaped connecting rod and a roller, the demolding ring is sleeved on the fixed rod, the top of the demolding ring close to the side plate is fixedly connected to the sliding plate, the sliding plate is slidably connected to the side plate, the sliding plate is slidably connected to the inclined column, rollers are provided at the contact corners of the sliding connection between the sliding plate and the inclined column, the rollers are slidably connected to the inclined column, the top of the inclined column is fixedly connected to the sliding column, the sliding column is slidably connected to the fixed plate fixedly connected to the side plate, the top of the sliding column is fixedly connected to the L-shaped connecting rod, and the end of the L-shaped connecting rod away from the sliding column is fixedly connected to the side of the diamond plate.

[0007] Preferably, the cutting assembly includes a dovetail groove, a guide rod, a slider, a first spring, a trapezoidal block, a roller, a cutting knife, a fixed block, a second spring, and a cutting groove, the dovetail groove is opened at the top center of the cross plate, the dovetail groove is slidably connected to the sliding seat, the bottom of the sliding seat is fixedly connected with a slider, the slider is slidably connected to the inside of the cross plate, the slider is slidably connected to a guide rod fixedly connected to the inner wall panel of the cross plate, the guide rod is sleeved with a first spring, the two ends of the first spring are respectively fixedly connected to one side of the slider close to the groove opened on the sliding seat and the wall panel inside the cross plate, the sliding seat A trapezoidal block is fixedly connected to one side of the part where the bottom is slidably connected to the dovetail groove, and a semicircular groove is provided at one end of the trapezoidal block and the sliding seat, and is located on the same side of the sliding seat. The trapezoidal inclined surface of the trapezoidal block is transmission-connected with a roller, and the roller is rotatably connected to a cutting knife. A slope is provided at the bottom of the cutting knife near the trapezoidal block, and the roller is rotatably connected to this slope. A fixed block is fixedly connected to the side of the cutting knife, and the fixed block is slidably connected to the inside of the cross plate. A second spring is fixedly connected to the top of the fixed block, and the top of the second spring is fixedly connected to the inner wall panel of the cross plate.

[0008] Preferably, a quarter-circular groove is provided on one side of the bottom of the punching seat on the horizontal plate, a cutting groove is provided at the position of the extension line of the groove, and the cutting knife is slidably connected inside the cutting groove.

[0009] Preferably, the feeding assembly includes a connecting rod, an upper roller shaft, a lower roller shaft, a rack, a clamping strip, an elastic strip, a bearing, a gear, a slide plate, a third spring and a fixed rod, the connecting rod is fixedly connected to the side of the punching table away from the pressing block, the end of the connecting rod is fixedly connected to the rack, the rack is meshingly connected to the gear, the gear is fixedly connected to the rotating shaft of the lower roller shaft, the lower roller shaft is rotatably connected to a connecting piece fixed to the bottom plate rotatably connected to the feeding seat, the connecting piece fixed to the bottom plate rotatably connected to the feeding seat is located directly above the lower roller shaft and is rotatably connected to the upper roller shaft, the lower The radius of the roller shaft is the same as the radius of the fixed rod, a bearing is sleeved on the rotating shaft of the upper roller shaft, a slide plate is sleeved on the bearing, the slide plate is slidably connected to a fixed rod, a third spring is sleeved on the fixed rod, two ends of the third spring are respectively fixedly connected to the inner wall plate of a connecting piece fixed to the bottom plate which is rotatably connected to the slide plate and the loading seat, the upper slide plate is slidably connected to the connecting piece fixed to the bottom plate which is rotatably connected to the loading seat through the fixed rod, a clamping strip is fixedly connected to the inside of the gear, an elastic strip is fixedly connected to the outside of the rotating shaft of the lower roller shaft, and the elastic strip is clamped with the clamping strip.

[0010] Preferably, the distance between the teeth on the rack is the same as the circumference of the gear.

[0011] Beneficial effects of the present invention:

[0012] 1: The design of the shock-absorbing spring can effectively absorb shock and buffer the stamping seat, and can also effectively protect the stamping seat. Through the design of the cutting component, the cutting knife can effectively cut the workpiece after the stamping is completed. Through the linkage of the trapezoidal block and the cutting component, the consumption of resources is also effectively saved. The elastic force of the second spring will reset the cutting knife, and the elastic force of the first spring will reset the trapezoidal block and the sliding seat.

[0013] 2: Through the design of the demolding assembly, the inclined column rises during the rising process of the stamping table, so that the sliding plate moves toward the direction close to the cross plate, and then the demolding ring pushes the punched workpiece on the fixed rod away from the fixed rod, so that the workpiece is effectively and efficiently collected. In the process of the stamping table descending, the demolding ring effectively shrinks, so that when the stamping table descends to stamp the workpiece, the demolding ring shrinks, and when the stamping table rises, the demolding ring effectively performs demolding, and at the same time effectively prevents the workpiece from being stuck on the device, so that the stamping and demolding are carried out in an orderly and efficient manner, which greatly improves the working efficiency of the device and avoids the hidden dangers caused by manual demolding.

[0014] 3: Through the design of the feeding assembly, since the upper roller is in contact with the lower roller and the workpiece is located between the upper roller and the lower roller, the lower roller will drive the workpiece to move toward the direction close to the sliding seat after being rotated counterclockwise by the gear, thereby effectively conveying the workpiece to the cross plate. Through the design of the card bar and the spring bar, during the descent of the rack, the gear will effectively drive the rotating shaft of the lower roller to rotate effectively, and during the ascent of the rack, the gear will not drive the output shaft of the lower roller to rotate, effectively preventing the workpiece from being separated from the feeding assembly due to the rise of the stamping table.

[0015] 4: Through the design of demoulding components, cutting components and feeding components, the entire device can effectively and stably produce workpieces during the stamping and resetting process of the stamping table. Since the power output of the stamping table is often excessive, the demoulding, cutting and feeding are combined with the motion trajectory of the stamping table. On the one hand, the excess power of the stamping table is effectively utilized, and on the other hand, the safety hazards caused by the contact between the staff and the production device are effectively avoided, which greatly improves the processing efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a stamping die for a curved sheet metal workpiece provided by the present invention;

[0018] Figure 2 for Figure 1 A partial cross-sectional view of the punching station shown;

[0019] Figure 3 for Figure 2 An enlarged schematic diagram of part B is shown;

[0020] Figure 4 for Figure 1 The AA section view shown;

[0021] Figure 5 for Figure 1 The schematic diagram of the structure of the upper roller and the lower roller shown;

[0022] Figure 6 for Figure 2 Schematic diagram of the connection structure between the gear and the rack shown.

[0023] In the figure: 1. bottom plate; 10. sliding seat; 11. side plate; 12. horizontal plate; 13. loading seat; 14. fixing rod; 15. diamond plate; 16. punching table; 17. top plate; 18. punching seat; 181. shock-absorbing spring; 182. limiting column; 19. pressing block; 2. demoulding assembly; 21. demoulding ring; 22. sliding plate; 23. inclined column; 24. fixing plate; 25. sliding column; 26. L-shaped connecting rod; 27. roller; 3. cutting assembly ; 31. dovetail groove; 32. guide rod; 33. slider; 34. first spring; 35. trapezoidal block; 36. roller; 37. cutting knife; 38. fixing block; 39. second spring; 391. cutting groove; 4. feeding assembly; 41. connecting rod; 42. upper roller shaft; 43. lower roller shaft; 44. rack; 45. clamping strip; 46. elastic strip; 47. bearing; 48. gear; 49. slide plate; 491. third spring; 492. fixing rod. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0025] like Figure 1-Figure 6As shown, a stamping die for an arc-shaped sheet metal workpiece according to the present invention comprises a bottom plate 1, one end side of the bottom plate 1 is fixedly connected to a side plate 11, a center of one side of the side plate 11 is fixedly connected to a cross plate 12, the cross plate 12 and the bottom plate 1 are located on the same side of the side plate 11, a sliding seat 10 is slidably connected to the top of the cross plate 12, a cutting assembly 3 is provided at the connection between the sliding seat 10 and the cross plate 12, a top plate 17 is fixedly connected to one side of the top of the side plate 11, the top plate 17 and the cross plate 12 are located on the same side of the side plate 11, and the top plate 1 A diamond plate 15 is slidably connected to the top plate 17, and the diamond plate 15 is fixedly connected to the stamping table 16 through a connecting piece slidably connected to the top plate 17. A pressing block 19 is fixedly connected to the bottom of the stamping table 16. A stamping seat 18 is slidably connected to the stamping table 16, and the stamping seat 18 passes through the bottom of the stamping table 16. The top of the stamping seat 18 is fixedly connected to a limiting column 182, and a shock-absorbing spring 181 is sleeved on the limiting column 182. The upper and lower ends of the shock-absorbing spring 181 are respectively fixedly connected to the top of the stamping seat 18 and the inner wall plate of the stamping table 16. The pressing block 19 and the punching seat 18 are respectively located at the two ends of the bottom of the punching table 16, and the pressing block 19 is connected to the sliding seat 10 in a transmission manner. A semicircular groove is opened at one end of the sliding seat 10, and a quarter-circular groove is opened at one side of the bottom of the punching seat 18. A fixing rod 14 is fixedly connected to the center of the side edge of the side plate 11. The semicircular groove opened at one end of the sliding seat 10 is located at the same height, and the center of the fixing rod 14 and the quarter-circular groove opened at one side of the bottom of the punching seat 18 are located on the same vertical line. A semicircular groove is provided at one end of the sliding seat 10, and a quarter-circular groove is provided on one side of the bottom of the punching seat 18, both of which have a radius greater than the radius of the fixed rod 14. A demoulding assembly 2 is sleeved on the fixed rod 14, and the demoulding assembly 2 is arranged on the side plate 11. One end of the bottom plate 1 away from the side plate 11 is rotatably connected to a loading seat 13 through a connecting piece fixedly connected to the bottom plate 1. A loading assembly 4 is provided on a connecting piece fixed on the bottom plate 1 and rotatably connected to the loading seat 13. The loading assembly 4 is transmission-connected to the punching seat 18.

[0026] Among them, the demolding assembly 2 includes a demolding ring 21, a sliding plate 22, an inclined column 23, a fixed plate 24, a sliding column 25, an L-shaped connecting rod 26 and a roller 27. The demolding ring 21 is sleeved on the fixed rod 14. The top of the demolding ring 21 close to the side plate 11 is fixedly connected with the sliding plate 22. The sliding plate 22 is slidably connected to the side plate 11. The sliding plate 22 is slidably connected with the inclined column 23. Rollers 27 are provided at the contact corner positions of the sliding connection between the sliding plate 22 and the inclined column 23. The rollers 27 are slidably connected to the inclined column 23. The top of the inclined column 23 is fixedly connected with the sliding column 25. The sliding column 25 is slidably connected to the fixed plate 24 fixedly connected to the side plate 11. The top of the sliding column 25 is fixedly connected with the L-shaped connecting rod 26. The end of the L-shaped connecting rod 26 away from the sliding column 25 is fixedly connected to the side of the diamond plate 15.

[0027] Among them, the cutting assembly 3 includes a dovetail groove 31, a guide rod 32, a slider 33, a first spring 34, a trapezoidal block 35, a roller 36, a cutting knife 37, a fixed block 38, a second spring 39, and a cutting groove 391. The dovetail groove 31 is opened at the top center of the cross plate 12, and the dovetail groove 31 is slidably connected to the sliding seat 10. The bottom of the sliding seat 10 is fixedly connected with the slider 33, and the slider 33 is slidably connected to the inside of the cross plate 12. The slider 33 is slidably connected to the guide rod 32 fixedly connected to the inner wall panel of the cross plate 12, and the first spring 34 is sleeved on the guide rod 32. The two ends of the first spring 34 are respectively fixedly connected to one side of the slider 33 close to the groove opened on the sliding seat 10 and the wall panel inside the cross plate 12. On the top, a trapezoidal block 35 is fixedly connected to one side of the part where the bottom of the sliding seat 10 is slidably connected to the dovetail groove 31. A semicircular groove is provided at one end of the trapezoidal block 35 and the sliding seat 10 and is located on the same side of the sliding seat 10. The trapezoidal inclined surface of the trapezoidal block 35 is transmission-connected with a roller 36, and the roller 36 is rotatably connected with a cutting knife 37. A slope is provided at the bottom of the cutting knife 37 near the position of the trapezoidal block 35 and the roller 36 is rotatably connected to this slope. A fixed block 38 is fixedly connected to the side of the cutting knife 37, and the fixed block 38 is slidably connected to the inside of the cross plate 12. A second spring 39 is fixedly connected to the top of the fixed block 38, and the top of the second spring 39 is fixedly connected to the inner wall panel of the cross plate 12.

[0028] A quarter-circular groove is provided on the bottom side of the punching seat 18 on the horizontal plate 12 , and a cutting groove 391 is provided at the extension line of the groove. The cutting knife 37 is slidably connected inside the cutting groove 391 .

[0029] The feeding assembly 4 includes a connecting rod 41, an upper roller shaft 42, a lower roller shaft 43, a rack 44, a clamping strip 45, an elastic strip 46, a bearing 47, a gear 48, a slide plate 49, a third spring 491 and a fixing rod 492. The connecting rod 41 is fixedly connected to the side of the punching table 16 away from the pressing block 19. The end of the connecting rod 41 is fixedly connected to the rack 44, the rack 44 is meshedly connected to the gear 48, the gear 48 is fixedly connected to the rotating shaft of the lower roller shaft 43, the lower roller shaft 43 is rotatably connected to the connecting piece fixed on the bottom plate 1 which is rotatably connected to the feeding seat 13, and the upper roller shaft 4 is rotatably connected to the connecting piece fixed on the bottom plate 1 which is located directly above the lower roller shaft 43. 2. The radius of the lower roller 43 is the same as the radius of the fixed rod 14. A bearing 47 is sleeved on the rotating shaft of the upper roller 42. A slide plate 49 is sleeved on the bearing 47. The slide plate 49 is slidably connected to a fixed rod 492. A third spring 491 is sleeved on the fixed rod 492. Both ends of the third spring 491 are respectively fixedly connected to the inner wall panels of the connecting member fixed to the bottom plate 1 and rotatably connected to the slide plate 49 and the loading seat 13. The upper slide plate 49 is slidably connected to the connecting member fixed to the bottom plate 1 and rotatably connected to the loading seat 13 through the fixed rod 492. A clamping strip 45 is fixedly connected to the inside of the gear 48. An elastic strip 46 is fixedly connected to the outer side of the rotating shaft of the lower roller 43. The elastic strip 46 is clamped with the clamping strip 45.

[0030] The distance between the teeth on the rack 44 is the same as the circumference of the gear 48 .

[0031] Working principle: When the present invention is in use, the workpiece to be stamped is first placed on the loading seat 13, and then the workpiece is placed on the cross plate 12 after being guided by the loading assembly 4, and then the stamping table 16 stamps the workpiece. During the descent of the stamping table 16, the stamping seat 18 first presses the workpiece. At the same time, in order to prevent the stamping table 16 from descending too quickly, the stamping seat 18 is effectively damped and buffered by the shock-absorbing spring 181, thereby protecting the stamping seat 18. After the stamping seat 18 presses the workpiece, as the stamping table 16 descends, the pressing block 19 contacts the sliding seat 10, and the pressing block 19 pushes the sliding seat 10 to move toward the position of the stamping seat 18, thereby causing the semi-automatic pressing member 10 to move toward the position of the stamping seat 18. The circular groove bends the workpiece, and then the workpiece is guided by the quarter-circular groove on the stamping seat 18 so that the workpiece is sleeved on the fixed rod 14. At the same time, when the pressure block 19 pushes the sliding seat 10, the slider 33 located at the bottom of the sliding seat 10 will squeeze the first spring 34. The trapezoidal block 35 will contact the roller 36 as the sliding seat 10 moves, and the trapezoidal block 35 causes the cutting knife 37 to rise through the roller 36, so that the cutting knife 37 cuts the stamped workpiece, and at the same time, the entire workpiece is sleeved on the fixed rod 14. After the stamping is completed, the stamping table 16 rises. At this time, the elastic force of the second spring 39 will reset the cutting knife 37, and the elastic force of the first spring 34 will reset the trapezoidal block 35 and the sliding seat 10.

[0032] During the rising process of the punching table 16, since the workpiece has been punched and the workpiece is sleeved on the fixed rod 14, the rising of the punching table 16 causes the diamond plate 15 to drive the L-shaped connecting rod 26 in the demolding assembly 2 to rise, and then the L-shaped connecting rod 26 drives the sliding column 25 to rise, and the rising of the sliding column 25 causes the inclined column 23 to rise, and the inclined column 23 rises and then rolls with the roller 27 on the sliding plate 22, so that the sliding plate 22 moves in the direction close to the cross plate 12, and then the sliding plate 22 drives the demolding ring 21 to move, and then the demolding ring 21 pushes the punched workpiece on the fixed rod 14 away from the fixed rod 14. The workpieces are collected effectively and efficiently, and during the descent of the punching table 16, the diamond plate 15 drives the inclined column 23 to move downward through the L-shaped connecting rod 26 and the sliding column 25, so that the inclined column 23 moves the sliding plate 22 in the direction away from the cross plate 12 through the roller 27, so that the demolding ring 21 is effectively contracted. When the punching table 16 descends to punch the workpiece, the demolding ring 21 contracts, and when the punching table 16 rises, the demolding ring 21 is effectively demolded, so that the stamping and demolding are carried out in an orderly and efficient manner, which greatly improves the working efficiency of the device and avoids the hidden dangers caused by manual demolding.

[0033] During the descent of the punching table 16, the connecting rod 41 in the feeding assembly 4 on the side of the punching table 16 will drive the rack 44 to descend, thereby causing the rack 44 to mesh with the gear 48, and then the rack 44 drives the gear 48 to rotate counterclockwise. Due to the elastic force exerted on the slide plate 49 by the third spring 491, the slide plate 49 is subjected to a downward force, and the upper roller shaft 42 is also subjected to a downward force under the action of the bearing 47 and the slide plate 49, thereby causing the upper roller shaft 42 to fit the lower roller shaft 43, and the workpiece is located between the upper roller shaft 42 and the lower roller shaft 43. After being subjected to the counterclockwise rotation of the gear 48, the lower roller shaft 43 will drive the workpiece to move in the direction close to the sliding seat 10, thereby effectively conveying the workpiece to the cross plate 12. Since the distance between the gear teeth on the rack 44 is the same as the circumference of the gear 48, the rack 44 will drive the gear 48 to rotate. The gear 48 is engaged with the rack 44 and the workpiece is pressed down by the stamping seat 18, thereby effectively stamping the workpiece. During the descent of the rack 44, the rotation of the gear 48 causes the clamping strip 45 to clamp the spring strip 46. Therefore, during the descent of the rack 44, the gear 48 can effectively drive the rotating shaft of the lower roller shaft 43 to rotate effectively. During the ascent of the rack 44, the clamping strip 45 causes the spring strip 46 to move toward the center of the rotating shaft of the lower roller shaft 43. Therefore, the clamping strip 45 and the spring strip 46 will not be clamped at this time. Therefore, during the ascent of the rack 44, the gear 48 will not drive the output shaft of the lower roller shaft 43 to rotate, thereby effectively preventing the workpiece from being separated from the loading assembly 4 due to the ascent of the stamping table 16.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A stamping die for a curved sheet metal workpiece, comprising a bottom plate (1), characterized in that: One end side edge of the bottom plate (1) is fixedly connected to a side plate (11), a center of one side of the side plate (11) is fixedly connected to a transverse plate (12), the transverse plate (12) and the bottom plate (1) are located on the same side of the side plate (11), a sliding seat (10) is slidably connected to the top of the transverse plate (12), a cutting assembly (3) is provided at the connection between the sliding seat (10) and the transverse plate (12), a top plate (17) is fixedly connected to one side of the top of the side plate (11), the top plate (17) and the transverse plate (12) are located on the same side of the side plate (11), a rhombus plate (15) is slidably connected to the top plate (17), the The diamond plate (15) is fixedly connected to the punching platform (16) through a connecting piece that is slidably connected to the top plate (17); the bottom of the punching platform (16) is fixedly connected to a pressing block (19); a punching seat (18) is slidably connected to the punching platform (16), and the punching seat (18) passes through the bottom of the punching platform (16); the top of the punching seat (18) is fixedly connected to a limiting column (182); a shock absorbing spring (181) is sleeved on the limiting column (182); the upper and lower ends of the shock absorbing spring (181) are respectively fixedly connected to the top of the punching seat (18) and the inner wall plate of the punching platform (16); the pressing block (19) is fixedly connected to the top of the punching seat (18) and the inner wall plate of the punching platform (16); 9) and the punching seat (18) are respectively located at the two ends of the bottom of the punching table (16), the pressing block (19) is connected to the sliding seat (10) in a transmission manner, one end of the sliding seat (10) is provided with a semicircular groove, and one side of the bottom of the punching seat (18) is provided with a quarter-circular groove, and the center of the side edge of the side plate (11) is fixedly connected with a fixing rod (14), the fixing rod (14) and the semicircular groove opened at one end of the sliding seat (10) are located at the same height, and the center of the fixing rod (14) and the quarter-circular groove opened at one side of the bottom of the punching seat (18) are located on the same vertical line, and the sliding seat A semicircular groove is provided at one end of the punching seat (10), and a quarter-circular groove is provided at one side of the bottom of the punching seat (18), the radius of which is greater than the radius of the fixing rod (14); a demoulding assembly (2) is sleeved on the fixing rod (14), and the demoulding assembly (2) is arranged on the side plate (11); an end of the bottom plate (1) away from the side plate (11) is rotatably connected to a loading seat (13) through a connecting piece fixedly connected to the bottom plate (1); a loading assembly (4) is provided on a connecting piece fixed to the bottom plate (1) to which the loading seat (13) is rotatably connected, and the loading assembly (4) is transmission-connected to the punching seat (18); The demoulding assembly (2) comprises a demoulding ring (21), a sliding plate (22), an inclined column (23), a fixed plate (24), a sliding column (25), an L-shaped connecting rod (26) and a roller (27); the demoulding ring (21) is sleeved on the fixed rod (14); the top of one end of the demoulding ring (21) close to the side plate (11) is fixedly connected to the sliding plate (22); the sliding plate (22) is slidably connected to the side plate (11); the sliding plate (22) is slidably connected to the inclined column (23); the sliding plate (22) ) is provided with a roller (27) at the contact corner position of the sliding connection between the inclined column (23), the roller (27) is slidably connected to the inclined column (23), the top of the inclined column (23) is fixedly connected with a sliding column (25), the sliding column (25) is slidably connected with a fixed plate (24) fixedly connected to the side plate (11), the top of the sliding column (25) is fixedly connected with an L-shaped connecting rod (26), and the end of the L-shaped connecting rod (26) away from the sliding column (25) is fixedly connected to the side of the diamond plate (15); The cutting assembly (3) comprises a dovetail groove (31), a guide rod (32), a slider (33), a first spring (34), a trapezoidal block (35), a roller (36), a cutting knife (37), a fixed block (38), and a second spring (39). The dovetail groove (31) is arranged at the top center of the transverse plate (12). The dovetail groove (31) is slidably connected to the sliding seat (10). The bottom of the sliding seat (10) is fixedly connected with a slider (33). The slider (33) is slidably connected to the inside of the transverse plate (12). The slider (33) is slidably connected to a guide rod (32) fixedly connected to the inner wall plate of the transverse plate (12). The guide rod (32) is sleeved with a first spring (34). The two ends of the first spring (34) are respectively fixedly connected to one side of the slider (33) close to the groove arranged on the sliding seat (10) and the inner wall plate of the transverse plate (12). A trapezoidal block (35) is fixedly connected to one side of the portion where the bottom of the sliding seat (10) is slidably connected to the dovetail groove (31); a semicircular groove is provided at one end of the trapezoidal block (35) and the sliding seat (10) and is located on the same side of the sliding seat (10); a roller (36) is rotatably connected to the trapezoidal inclined surface of the trapezoidal block (35); a cutting knife (37) is rotatably connected to the roller (36); a slope is arranged at the bottom of the cutting knife (37) near the position of the trapezoidal block (35) and the roller (36) is rotatably connected to the slope; a fixed block (38) is fixedly connected to the side of the cutting knife (37); the fixed block (38) is slidably connected to the inside of the horizontal plate (12); a second spring (39) is fixedly connected to the top of the fixed block (38); and the top of the second spring (39) is fixedly connected to the inner wall plate of the horizontal plate (12); The feeding assembly (4) comprises a connecting rod (41), an upper roller shaft (42), a lower roller shaft (43), a rack (44), a clamping strip (45), an elastic strip (46), a bearing (47), a gear (48), a slide plate (49), a third spring (491) and a fixing rod (492), wherein the connecting rod (41) is fixedly connected to a side edge of the punching table (16) away from the pressing block (19), the end of the connecting rod (41) is fixedly connected to a rack (44), the rack (44) is meshingly connected to a gear (48), the gear (48) is fixedly connected to the rotating shaft of the lower roller shaft (43), the lower roller shaft (43) is rotatably connected to a connecting piece fixed to the bottom plate (1) and rotatably connected to the feeding seat (13), the connecting piece fixed to the bottom plate (1) and rotatably connected to the upper roller shaft (42) located directly above the lower roller shaft (43) ), the radius of the lower roller (43) is the same as the radius of the fixed rod (14), the rotating shaft of the upper roller (42) is sleeved with a bearing (47), the bearing (47) is sleeved with a slide plate (49), the slide plate (49) is slidably connected with a fixed rod (492), the fixed rod (492) is sleeved with a third spring (491), the two ends of the third spring (491) are respectively fixedly connected to the inner wall plate of the connecting member fixed on the bottom plate (1) and the sliding plate (49) and the loading seat (13) are rotatably connected, the sliding plate (49) is slidably connected to the connecting member fixed on the bottom plate (1) and the loading seat (13) is rotatably connected through the fixing rod (492), the interior of the gear (48) is fixedly connected with a clamping strip (45), the outer side of the rotating shaft of the lower roller (43) is fixedly connected with an elastic strip (46), and the elastic strip (46) is clamped with the clamping strip (45).

2. The arc-shaped sheet metal workpiece stamping die according to claim 1, characterized in that: A quarter-circular groove is provided on the horizontal plate (12) at one side of the bottom of the punching seat (18), a cutting groove (391) is provided at the position of the extension line of the groove, and the cutting knife (37) is slidably connected inside the cutting groove (391).

3. The arc-shaped sheet metal workpiece stamping die according to claim 1, characterized in that: The distance between the gear teeth on the rack (44) is the same as the circumference of the gear (48).

Images