Continuous shape drawing die

Abstract

The application discloses a continuous shape stretching die, relates to the technical field of stretchers, and is characterized in that an air extraction assembly is arranged on a movable plate, the air extraction assembly comprises an air extraction groove arranged on the movable plate, an outer side wall of the movable plate is fixedly connected with a connecting pipe, the connecting pipe is connected with an air extraction pump, a through hole is arranged on an upper die, and the air extraction groove, the through hole and the connecting pipe are communicated; a dismounting assembly is arranged on the movable plate, the dismounting assembly comprises a dismounting plate and a driving assembly, the dismounting plate is located below the upper die when the die is not closed, and the driving assembly is used for driving the dismounting plate to move outward of the upper die when the die is closed. The application does not need a material ejecting device and does not need another device to move the workpiece from the concave die, thus improving the overall machining efficiency, and the application has compact structure and does not increase the floor area.

Description

Technical Field

[0001] The present invention relates to the technical field of stretching machines, in particular to a continuous stretching die. Background Art

[0002] A deep drawing machine (also known as a drawing machine or stretching machine) is an industrial equipment used for forming metal strips. It applies pressure to the metal material through a mold, causing it to undergo plastic deformation, thereby producing various open hollow parts. Its working principle is to place a flat metal material between a punch and a die, and use power to drive the punch downward to cooperate with the die to achieve metal processing. It is a key equipment for achieving precision stamping in modern manufacturing.

[0003] However, in the daily use of the current stretching machine mold, the ejecting device only pushes the formed workpiece out of the die, and does not collect the formed workpiece. After the workpiece is ejected, another device is required to move the workpiece out of the die for collection. Due to the additional process of removing the workpiece, the overall processing efficiency is reduced, and the overall volume of the equipment is increased, thereby increasing the floor space. Continuous drawing refers to the continuous completion of the drawing process on a metal strip through a set of molds. The existing continuous stretching machine is usually connected to a conveying device for continuous conveying of the metal strip. After each workpiece is processed, the conveying device drives the metal strip forward one workstation. The strip will be moved each time a workpiece is processed. If the metal strip is skewed or offset during the process, it may cause local deformation or missing of the workpiece after the metal strip is stretched, and ultimately lead to incomplete workpieces. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a continuous stretching die.

[0005] The technical solution is as follows:

[0006] A continuous-shaped stretching die comprises a workbench, a top side wall of the workbench is fixedly connected to a control panel, four corners of the top of the workbench (1) are fixedly connected to columns, the tops of the four columns are fixedly connected to a top plate, a hydraulic cylinder is fixedly connected to the top plate, a telescopic shaft of the hydraulic cylinder passes through the top plate, a movable plate is fixedly connected to the bottom of the telescopic shaft of the hydraulic cylinder, four corners of the movable plate are slidably connected to the four columns, an upper die is fixedly connected to the bottom of the movable plate, a lower die is fixedly connected to the top of the workbench, two conveying platforms are fixedly connected to both sides of the workbench, and an air extraction component is provided on the movable plate;

[0007] The air extraction component includes an air extraction groove provided on the movable plate, the outer wall of the movable plate is fixedly connected with a connecting pipe, the connecting pipe is connected to the air extraction pump, and a through hole is provided on the upper mold, the air extraction groove, the through hole and the connecting pipe are connected;

[0008] The movable plate is provided with a dismounting assembly, which comprises a dismounting plate and a driving assembly.

[0009] Further, the air extraction groove is composed of a horizontal section and a vertical section, and has an L shape when placed horizontally, the connecting pipe is connected to the horizontal section of the air extraction groove, and the through hole is connected to the vertical section of the air extraction groove.

[0010] Further, the driving assembly comprises a hollow position formed on the side of the movable plate away from the connecting pipe, a fixed rod is fixedly connected to the inside of the hollow position, a connecting rod assembly is rotatably connected to the fixed rod, one end of the connecting rod assembly is rotatably connected to a connecting rod, and the two ends of the connecting rod are fixedly connected to the dismounting plate.

[0011] Further, the connecting rod assembly comprises a threaded rod one, a connecting frame is connected to the bottom of the threaded rod one, a threaded rod two is connected to the end of the connecting frame away from the threaded rod one, and the end of the threaded rod two away from the connecting frame is rotatably connected to the connecting rod.

[0012] Further, each telescopic support is composed of two supporting rods, a strip-shaped hole is formed on each supporting rod, and the two supporting rods are fixedly connected by a bolt penetrating through the strip-shaped holes and cooperating with a nut.

[0013] Further, the conveying platform is provided with a correcting assembly, the correcting assembly comprises fixing grooves formed on the two conveying platforms respectively, two groups of fixing grooves are arranged on each conveying platform, each group of fixing grooves comprises two fixing grooves symmetrical along the center line of the conveying platform, a fixed table is fixedly connected to the two sides of the movable plate, two guide grooves are formed in each fixed table, an adjusting support is arranged in each guide groove, a screw hole is formed in each guide groove, a strip-shaped hole is formed in the adjusting support, a screw is locked in the screw hole through the strip-shaped hole to fix the adjusting support on the fixed table, a spring is fixedly connected to the top of the end of each adjusting support away from the fixed table, a fixed frame is fixedly connected to the top of the spring, the fixed frame and the adjusting support are slidingly connected, and a correcting frame is fixedly connected to the bottom of each fixed frame.

[0014] Further, two adjusting supports on the same side of the fixed table are connected by a cross rod.

[0015] Further, each correcting frame corresponds to each fixing groove on the conveying platform, an inclined surface is arranged on the inner side of the correcting frame, and the inner side wall of the correcting frame is made of rubber.

[0016] The beneficial effects of the present application are as follows:

[0017] This solution does not require a material ejection device. The vacuum assembly sucks the workpiece to release it from the mold, and cooperates with the stripping assembly to move synchronously. When the upper mold and the lower mold are closed, that is, the workpiece is stretched, the upper mold will move upward and simultaneously drive the workpiece upward. At the same time, the stripping plate will move to the bottom of the upper mold. When the upper mold moves to the highest point, the vacuum assembly releases the workpiece, and the workpiece will fall onto the stripping plate. This series of actions is very fast. Compared with the existing technology, there is no need for a material ejection device or an additional device to remove the workpiece from the die, thereby improving the overall processing efficiency. In addition, this solution has a compact structure and does not increase the floor space.

[0018] The inclined surface of the correction frame can push the metal strip, which can achieve the correction effect on the metal strip, so that the metal strip can be centered during stretching, reducing the occurrence of defects in the stretched workpiece caused by deviation or skew due to transportation, and ensuring the integrity of the formed workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall three-dimensional schematic diagram of the present invention;

[0020] Figure 2 It is a schematic perspective cutaway view of the present invention as a whole;

[0021] Figure 3 For the present invention Figure 2 A magnified schematic diagram of the component at center A;

[0022] Figure 4 It is a three-dimensional schematic diagram of the movable plate, connecting frame, detachable plate and other components of the present invention;

[0023] Figure 5 is a three-dimensional schematic diagram of the detachable assembly of the present invention;

[0024] Figure 6 This is a schematic sectional perspective view of the threaded rod 1, the connecting frame, the threaded rod 2 and other components of the present invention;

[0025] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the component at point B;

[0026] Figure 8 It is a side perspective schematic diagram of the correction frame, fixing slot and other components of the present invention;

[0027] Figure 9 It is a schematic sectional perspective view of the adjusting frame, fixing frame, correction frame and other components of the present invention;

[0028] Figure 10 is a perspective schematic diagram of the correction assembly of the present invention from a first viewing angle;

[0029] Figure 11 2 is a perspective schematic diagram of the correction component of the present invention from a second viewing angle.

[0030] Wherein, the accompanying drawings in the present invention are:

[0031] 1. Workbench; 11. Control panel; 12. Column; 13. Top plate; 14. Hydraulic cylinder; 15. Movable plate; 16. Upper mold; 17. Lower mold; 18. Conveying platform;

[0032] Air extraction assembly: 21, air extraction groove; 22, connecting pipe; 23, through hole;

[0033] Removable components: 31, recessed space; 32, fixing rod; 33, threaded rod 1; 34, connecting frame; 35, threaded rod 2; 36, connecting rod; 37, removable plate; 38, fixing sleeve; 39, telescopic frame;

[0034] Correction components: 41, fixing groove; 42, fixing platform; 43, guide groove; 44, screw; 45, adjustment frame; 46, spring; 47, fixing frame; 48, correction frame. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] The embodiments provided by the present invention will be described in detail below:

[0037] like Figures 1 to 3 and Figure 6 As shown, a continuous stretching die comprises a workbench 1, the top side walls of the workbench 1 are fixedly connected to a control panel 11, the four corners of the top of the workbench 1 are fixedly connected to columns 12, the tops of the four columns 12 are commonly fixedly connected to a top plate 13, a hydraulic cylinder 14 is fixedly connected to the top plate 13, the telescopic shaft of the hydraulic cylinder 14 passes through the top plate 13, the bottom of the telescopic shaft of the hydraulic cylinder 14 is fixedly connected to a movable plate 15, the four corners of the movable plate 15 are slidably set on the four columns 12, the bottom of the movable plate 15 is fixedly connected to an upper die 16, the top of the workbench 1 is fixedly connected to a lower die 17 corresponding to the position of the upper die 16, a conveying platform 18 is connected to each side of the workbench 1, the conveying platform 18 is used to place the metal strip, and the movable plate 15 is provided with an exhaust component for adsorbing the workpiece to prevent the workpiece from falling.

[0038] It should be noted that the upper die 16 is specifically composed of a punch, a blank holder, a trimming knife, and other components, while the lower die 17 is specifically composed of a die, a lower die holder, and other components. These are all prior art components and are not described in detail here. A conveyor device (not shown) is provided on the outside of the conveyor platform 18 for continuously conveying the metal strip. The conveyor device's function is to move the strip from the conveyor platform 18 to the lower die 17 for stretching, and after each stretch, to shift the strip for the next stretching cycle. The conveyor device is a prior art structure and is not described in detail here.

[0039] Specifically, when stretching is required, the metal strip to be stretched is placed on the conveying platform 18, and the metal strip is conveyed by the conveying device. When the metal strip is conveyed to the lower mold 17 by the conveying device, the conveying device stops conveying, and the telescopic shaft of the hydraulic cylinder 14 extends. The telescopic shaft of the hydraulic cylinder 14 drives the movable plate 15 to move downward on the column 12. When the movable plate 15 moves downward, it drives the upper mold 16 to punch the metal strip. The metal strip can be stretched by the mutual cooperation of the upper mold 16 and the lower mold 17. When the upper mold 16 and the lower mold 17 interact with each other, the upper mold 1 The trimming knife on 6 can cut the formed workpiece and the metal strip, so that the formed workpiece is separated from the metal strip. After the stretching process of the metal strip is completed, the telescopic shaft of the hydraulic cylinder 14 contracts, and the telescopic shaft of the hydraulic cylinder 14 drives the movable plate 15 to move upward on the column 12, and the movable plate 15 drives the upper mold 16 to move upward, wherein the vacuum component adsorbs the workpiece, so that the workpiece is separated from the lower mold 17 and adsorbed in the upper mold 16. At the same time, the pressure ring of the upper mold 16 can press the metal strip to prevent the metal strip from being driven upward when the upper mold 16 moves upward, thereby completing the stretching process of the metal strip.

[0040] Please refer to Figure 2 、 Figure 3 as well as Figure 6 The exhaust component includes an exhaust groove 21 provided on the movable plate 15. The exhaust groove 21 consists of a horizontal section and a vertical section, and the exhaust groove 21 is horizontally L-shaped. The outer wall of the movable plate 15 is fixedly connected with a connecting pipe 22. The connecting pipe 22 is connected to the horizontal section of the exhaust groove 21. The end of the connecting pipe 22 away from the movable plate 15 is connected to an exhaust pump (not shown). When the exhaust pump is working, the interior of the exhaust groove 21 can be exhausted through the connecting pipe 22. A through hole 23 corresponding to the position of the exhaust groove 21 is provided on the upper mold 16, and the through hole 23 is connected to the vertical section of the exhaust groove 21.

[0041] Specifically, when the upper mold 16 moves upward, the vacuum pump is started, and the vacuum pump will extract the air in the vacuum groove 21 through the connecting pipe 22. Then, because the workpiece and the punch of the upper mold 16 are in a fitted state, after the air in the vacuum groove 21 is extracted, the interior of the through hole 23 is also in a negative pressure state, so that the workpiece can be adsorbed in the punch of the upper mold 16. Then, when the upper mold 16 moves completely upward to the highest position, the workpiece is still in the punch of the upper mold 16.

[0042] like Figure 1 、 Figures 4 to 7 As shown, the movable plate 15 is provided with a disengagement assembly, which includes a disengagement plate 37 and a drive assembly. When the mold is not closed, the disengagement plate 37 is located below the upper mold 16. The drive assembly is used to drive the disengagement plate 37 to move outward from the upper mold 16 when the mold is closed. The drive assembly includes a recessed space 31 defined on the side of the movable plate 15 away from the connecting tube 22. A fixed rod 32 is fixedly connected to the interior of the recessed space 31. The fixed rod 32 is rotatably connected to a connecting rod assembly. The other end of the connecting rod assembly is rotatably connected to a connecting rod 36. The connecting rod assembly includes a threaded rod 33, the bottom of which is connected to a connecting frame 34. The end of the connecting frame 34 away from the threaded rod 33 is connected to the threaded rod 35. The end of the threaded rod 35 away from the connecting frame 34 is rotatably connected to the connecting rod 36. The connecting frame 34 is provided with threaded holes corresponding to the positions of the threaded rod 33 and the threaded rod 35. The connecting frame 34 is fixedly connected to the threaded rod 33 and the threaded rod 35 through the threaded holes. The overall length of the connecting rod assembly can be adjusted by rotating the threaded rod 33 or the threaded rod 35. The ends of the connecting rod 36 are fixedly connected to the detachable plate 37. The outer surfaces of the two columns 12 near the detachable plate 37 are each sleeved with a fixed sleeve 38. Each of the two fixed sleeves 38 is rotatably connected to a telescopic frame 39. The ends of the two telescopic frames 39 away from the fixed sleeve 38 are fixedly connected to the outer surfaces of the detachable plate 37.

[0043] It should be noted that bolts are provided at the connection points between threaded rod 1 33 and threaded rod 2 35 and connecting frame 34. When the overall length of the connecting rod assembly needs to be adjusted, the adjustment can be made by loosening the bolts. After the adjustment is completed, the connection between threaded rod 1 33 and connecting frame 34 and the connection between threaded rod 2 35 and connecting frame 34 can be fixed by retightening. Each telescopic frame 39 is composed of two support rods, both of which are provided with strip holes. Bolts pass through the strip holes and cooperate with nuts to fix the two support rods together. The length of the telescopic frame 39 can be adjusted by adjusting the position of the dismounting plate 37 by adjusting the length of the connecting rod assembly and the telescopic frame 39, so that the dismounting plate 37 is adjusted to a suitable position to ensure that when the upper mold 16 and the lower mold 17 are not closed, the dismounting plate 37 is located below the upper mold 16 to catch the workpiece falling from the upper mold 16, and the dismounting plate 37 will be as shown. Figure 6As shown, the inner side is tilted upward to facilitate the workpiece to slide down and out.

[0044] Specifically, when the above-mentioned movable plate 15 moves downward, the fixed rod 32 in the concave space 31 will also move downward. The downward movement of the fixed rod 32 will drive the end of the connecting rod assembly connected to the fixed rod 32 to move downward. Since the other end of the connecting rod assembly is rotatably connected to the connecting rod 36, and the rotating rod 36, the detachable plate 37 and the telescopic frame 39 are an integral structure fixedly connected together, the top of the integral structure, that is, the top of the telescopic frame 39 is connected to the column 12, so the top of the integral structure cannot move downward, that is, the connecting rod 36 cannot move downward, resulting in the end of the connecting rod assembly connected to the connecting rod 36 cannot move downward, so that the connecting rod assembly will push the connecting rod 36 outward and rotate around the connecting rod 36. During this process, the telescopic frame 39 will rotate around the fixed sleeve 38. The movement trajectory of the connecting rod 36 is an arc, and the radius of the arc is the length of the telescopic frame 39. The detachable plate 37 moves synchronously outward following the connecting rod 36. In summary, when the movable plate 15 moves downward, the dismounting plate 37 will swing outward. Therefore, when the movable plate 15 drives the upper mold 16 and the lower mold 17 to close the mold and stretch the metal strip, the dismounting plate 37 will not block the upper mold 16 and the lower mold 17, thereby not affecting the closing of the upper mold 16 and the lower mold 17.

[0045] On the contrary, when the upper mold 16 and the lower mold 17 stretch the metal strip, when the telescopic shaft of the hydraulic cylinder 14 drives the upper mold 16 to move upward through the movable plate 15, the release plate 37 will swing inward and move to the bottom of the upper mold 16. Figure 6 As shown, when the dismounting plate 37 swings to the bottom of the upper mold 16, the dismounting plate 37 is inclined. When the telescopic shaft of the hydraulic cylinder 14 contracts to the shortest state, that is, the movable plate 15 moves to the highest position, the vacuum pump pumps air in the reverse direction. The vacuum pump pumps air into the vacuum groove 21 through the connecting pipe 22. At this time, the gas in the vacuum groove 21 will be discharged through the through hole 23. The discharged gas will push the formed workpiece to move downward, thereby realizing the work of dismounting the workpiece downward. The workpiece will fall onto the dismounting plate 37 located below the upper mold 16. A collecting device is placed below the dismounting plate 37. The workpiece will slide from the dismounting plate 37 into the collecting device to achieve the effect of automatic collection.

[0046] It should be noted that the collection device mentioned above can be a container such as a collection bucket that can collect workpieces, or it can be used in conjunction with a conveyor belt for assembly line production, so as to adapt to the use in different scenarios and improve the adaptability of the equipment.

[0047] In summary, this solution does not require a ejecting device, and the workpiece is demoulded by adsorbing the vacuum component, and cooperates with the disassembly component to move synchronously. When the upper mold 16 and the lower mold 17 are closed, that is, the workpiece is stretched, the upper mold 16 will synchronously drive the workpiece upward during the upward movement, and the disassembly plate 37 will move to the bottom of the upper mold 16. When the upper mold 16 moves to the highest point, the vacuum component releases the workpiece, and the workpiece will fall onto the disassembly plate 37. This series of actions is very fast. Compared with the existing technology, there is no need for a ejecting device or other device to move the workpiece out of the die, thereby improving the overall processing efficiency. In addition, this solution has a compact structure and does not increase the floor space.

[0048] like Figure 1 、 Figures 8 to 11 As shown, the conveying platform 18 is provided with a correction component for correcting the position of the metal strip. The correction component includes fixed grooves 41 respectively provided on the two conveying platforms 18. Each conveying platform 18 is provided with two groups of fixed grooves 41. Each group of fixed grooves 41 includes two fixed grooves 41 symmetrically along the center line of the conveying platform 18. Both sides of the movable plate 15 are fixedly connected by bolts with fixed platforms 42 corresponding to the positions of the conveying platforms 18. Both fixed platforms 42 are provided with two guide grooves 43. The two guide grooves 43 on each fixed platform 42 correspond to the positions of the two groups of fixed grooves 41 on each conveying platform 18. An adjustment frame 45 is provided in the guide groove 43. Each guide groove 43 is provided with a threaded hole. The adjustment frame 45 is provided with a strip hole. Screws 44 pass through the strip hole and are locked in the threaded hole to fix the adjustment frame 45 on the fixed platform 42. The position of the adjustment frame 45 can be adjusted by loosening the screws 44. The top of each adjusting frame 45 away from the fixed platform 42 is fixedly connected to a spring 46, and the top of the spring 46 is fixedly connected to a fixing frame 47. The fixing frames 47 are composed of vertical rods and horizontal plates. The vertical rods of the fixing frames 47 are slidably connected to the adjusting frame 45, and the bottom of the horizontal plate of each fixing frame 47 is fixedly connected to a correction frame 48. There are a total of 8 correction frames 48, each of which corresponds to the fixed groove 41 on the conveying platform 18. The inner side of the correction frame 48 is provided with an inclined surface for pushing and correcting the metal strip. The inner side wall of the correction frame 48 is set to rubber material so as not to damage the metal strip when it contacts it.

[0049] It should be noted that the two adjustment frames 45 located on the same side of the fixed platform 42 are connected by a cross bar, which is used to enable synchronous adjustment when adjusting the two adjustment frames 45 on the same side. When the adjustment frame 45 slides, the fixed frame 47 will move horizontally synchronously, and the fixed frame 47 will drive the correction frame 48 to move horizontally synchronously, so that the correction frame 48 can adapt to metal strips of different widths. After the adjustment is completed, the position of the adjustment frame 45 needs to be fixed, and the screws 44 can be tightened at this time.

[0050] Specifically, after the position of the adjusting frame 45 is adjusted by the above method, the adjusting frame 45 makes the position of the correcting frame 48 synchronously adjusted through the fixing frame 47. When the position of the correcting frame 48 is adjusted to the appropriate position, that is, the inclined surfaces of the two correcting frames 48 on the same side and the inclined surfaces of the two correcting frames 48 on the other side just correspond vertically to the edge positions of both sides of the metal strip. When the metal strip needs to be stretched, that is, when the telescopic shaft of the hydraulic cylinder 14 drives the upper mold 16 to move downward through the movable plate 15, the movable plate 15 will also drive the fixed platform 42 to move downward synchronously, and the fixed platform 42 will The adjusting frame 45 in the guide groove 43 is driven to move downward, and the adjusting frame 45 enables the fixing frame 47 to drive the correcting frame 48 to move downward through the spring 46. When the correcting frame 48 moves downward, the bottom of the correcting frame 48 will be inserted into the inside of the fixing groove 41. At the same time, the inclined surface of the correcting frame 48 will contact the edges on both sides of the metal strip. The inclined surface of the correcting frame 48 can push the metal strip, and the correction effect of the metal strip can be achieved, so that the metal strip can be centered during stretching, reducing the deviation or skew caused by transportation, which causes the metal strip to be stretched and defective, thereby ensuring the integrity of the formed workpiece.

[0051] When the upper mold 16 and the lower mold 17 just come into contact with the metal strip, the upper mold 16 is still in a state of continuing to move downward, that is, the movable plate 15 is still driving the upper mold 16 downward. Because the correction frame 48 has already come into contact with the metal strip, the correction frame 48 can no longer move downward. The inability of the correction frame 48 to move downward also causes the fixed frame 47 to be unable to move downward. Because the movable plate 15 is still moving downward, the movable plate 15 drives the fixed platform 42 downward, causing the adjustment frame 45 to continue to move downward. When the adjustment frame 45 moves downward, it stretches the spring 46 between it and the fixed frame 47. The elastic contraction of the spring 46 causes the fixed frame 47 to drive the correction frame 48 to always come into contact with the two side edges of the metal strip, thereby being able to fix the metal strip while correcting it. The metal strip is fixed at multiple points by multiple correction frames 48, which improves the stability of the metal strip when it is stretched and prevents the metal strip from shifting when the upper mold 16 and the lower mold 17 are closed.

[0052] It should be noted that the lowest point of the inclined surface of the correction frame 48 is lower than the lower surface of the upper mold 16, so the correction frame 48 contacts the metal strip before the upper mold 16, and can correct and fix the metal strip before the upper mold 16 contacts the metal strip.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A continuous stretching die, comprising a workbench (1), wherein the top side wall of the workbench (1) is fixedly connected to a control panel (11), the top four corners of the workbench (1) are fixedly connected to columns (12), the tops of the four columns (12) are fixedly connected to a top plate (13), a hydraulic cylinder (14) is fixedly connected to the top plate (13), the telescopic shaft of the hydraulic cylinder (14) passes through the top plate (13), the bottom of the telescopic shaft of the hydraulic cylinder (14) is fixedly connected to a movable plate (15), the four corners of the movable plate (15) are slidably connected to the four columns (12), the bottom of the movable plate (15) is fixedly connected to an upper die (16), the top of the workbench (1) is fixedly connected to a lower die (17), and two sides of the workbench (1) are fixedly connected to two conveying platforms (18), characterized in that An air extraction component is provided on the movable plate (15); The air extraction component includes an air extraction groove (21) provided on the movable plate (15); a connecting pipe (22) is fixedly connected to the outer wall of the movable plate (15); the connecting pipe (22) is connected to the air extraction pump; a through hole (23) is provided on the upper mold (16); the air extraction groove (21), the through hole (23) and the connecting pipe (22) are connected; The movable plate (15) is provided with a dismounting assembly, which includes a dismounting plate (37) and a driving assembly. When the mold is not closed, the dismounting plate (37) is located below the upper mold (16). The driving assembly is used to drive the dismounting plate (37) to move toward the outside of the upper mold (16) when the mold is closed. The driving assembly includes a concave space (31) opened on the side of the movable plate (15) away from the connecting pipe (22). The interior of the concave space (31) is fixedly connected with a fixed rod (32). The fixed rod (32) is rotatably connected to a connecting rod assembly. The other end of the connecting rod assembly is rotatably connected to a connecting rod (36). Both ends of the connecting rod (36) are fixedly connected to the dismounting plate (37). The outer surfaces of the two columns (12) near the side of the dismounting plate (37) are each sleeved with a fixed sleeve (38). The two fixed sleeves (38) are each rotatably connected to a telescopic frame (39). The ends of the two telescopic frames (39) away from the fixed sleeve (38) are fixedly connected to the outer surfaces of both sides of the dismounting plate (37).

2. The continuous stretching die according to claim 1, characterized in that: The air extraction groove (21) consists of a horizontal section and a vertical section, and the air extraction groove (21) is in a horizontal L-shape. The connecting pipe (22) is connected to the horizontal section of the air extraction groove (21), and the through hole (23) is connected to the vertical section of the air extraction groove (21).

3. The continuous-form drawing die according to claim 1, characterized in that: The connecting rod assembly includes a threaded rod (33), the bottom of the threaded rod (33) is connected to a connecting frame (34), an end of the connecting frame (34) away from the threaded rod (33) is connected to a threaded rod (35), an end of the threaded rod (35) away from the connecting frame (34) is rotatably connected to a connecting rod (36), and the connecting frame (34) is provided with threaded holes at positions corresponding to the threaded rod (33) and the threaded rod (35).

4. The continuous-form drawing die according to claim 3, characterized in that: Each telescopic frame (39) is composed of two support rods, both of which are provided with strip holes, and bolts pass through the strip holes and cooperate with nuts to fix the two support rods together.

5. The continuous-form drawing die according to claim 1, characterized in that: A correction component is provided on the conveying platform (18), and the correction component includes fixed grooves (41) respectively provided on the two conveying platforms (18). Two groups of fixed grooves (41) are provided on each conveying platform (18), and each group of fixed grooves (41) includes two fixed grooves (41) symmetrical along the center line of the conveying platform (18). Both sides of the movable plate (15) are fixedly connected to fixed platforms (42), and the two fixed platforms (42) are provided with two guide grooves (43). An adjustment frame (45) is provided in the guide groove (43). A threaded hole is provided in each guide groove (43), and a strip hole is provided on the adjustment frame (45). The screw (44) passes through the strip hole and is locked in the threaded hole to fix the adjustment frame (45) on the fixed platform (42). The top of each adjustment frame (45) away from the fixed platform (42) is fixedly connected to a spring (46), and the top of the spring (46) is fixedly connected to a fixing frame (47). The fixing frame (47) is slidably connected to the adjustment frame (45), and the bottom of each fixing frame (47) is fixedly connected to a correction frame (48).

6. The continuous-form drawing die according to claim 5, characterized in that: The two adjustment frames (45) located on the same side of the fixed platform (42) are connected by a crossbar.

7. The continuous-form drawing die according to claim 5, characterized in that: Each correction frame (48) corresponds to each fixing groove (41) on the conveying platform (18), and an inclined surface is provided on the inner side of the correction frame (48). The inner side wall of the correction frame (48) is provided with a rubber material.

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