Punching device for aluminum veneer

Abstract

The invention relates to a stamping device for an aluminum veneer, which belongs to the technical field of stamping and comprises a lower die holder, an upper die holder, a rigid male die and an elastic female die, the rigid male die is connected to the lower die holder and is provided with a strong pressure area and a clearance area, the strong pressure area is arranged on the plane of the rigid male die close to the curved surface of the rigid male die, and the clearance area is arranged on the plane of the rigid male die close to the curved surface of the rigid male die. The clearance area is arranged in a plane between the two strong pressure areas; the elastic female die is connected to the upper die base and provided with a high-elastic body and a low-elastic body, the high-elastic body corresponds to the strong pressure area, the low-elastic body corresponds to the clearance area, and the elastic modulus of the high-elastic body is larger than that of the low-elastic body. The technical problem that in the prior art, due to the fact that an elastic body of an elastic female die is integrally arranged, accurate partitioned pressing cannot be conducted based on the technology, and the adjustability of the stamping effect is poor can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of stamping, and in particular relates to a stamping device for an aluminum single plate. Background Art

[0002] Aluminum veneer is widely used in building wall decoration as a decorative building material. In order to obtain richer visual effects, stamping is often used to process the aluminum substrate into different curved shapes. Because the post-process has high surface quality requirements on the front of the aluminum veneer, the combination of rigid punch and elastic die is used for stamping, which can greatly reduce the surface damage of the aluminum substrate during the forming process.

[0003] The existing invention patent with publication number CN108015145A discloses a multi-position locally loaded rubber forming method and device, which uses rubber as an elastic die / punch, and is provided with a rigid punch / die that extrude a sheet together with the rubber. A plurality of sliders are provided in the rubber frame, and the positions of the sliders correspond to the deformed parts of the sheet. The sliders fully deform the deformed parts of the sheet by squeezing the local rubber.

[0004] The prior art has the following problems:

[0005] During the stamping process of the aluminum substrate, a strong pressure area (to control deformation and reduce material leakage) and an air avoidance area (a non-deformation area that allows the material to be uniformly thinned to adapt to the pulling of the strong pressure area) are divided according to the process requirements. This requires that the pressure on the aluminum substrate in different areas is different. The existing technology uses rubber as the elastic part. When multiple sliders squeeze parts of the rubber respectively, because the rubber is always in the same frame, the rubber as a whole ultimately has the same pressure at different positions on the contact surface of the plate (the pressure generated by the downward pressure of a single slider will be radially transmitted to the surrounding rubber at the corresponding position, thereby causing pressure dispersion). The integrated elastic body setting of the elastic die cannot accurately apply pressure in different zones based on the process, resulting in poor adjustability of the stamping effect. Summary of the invention

[0006] The present invention provides a stamping device for an aluminum single plate, which can solve the technical problem in the prior art that the integrated setting of the elastic body of the elastic die cannot accurately perform zoned pressure application based on the process, thereby resulting in poor adjustability of the stamping effect.

[0007] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0008] The present application provides a stamping device for an aluminum single plate, comprising a lower die base and an upper die base, which also comprises a rigid punch and an elastic die. The rigid punch is connected to the lower die base, and the rigid punch has a strong pressure zone and an air avoidance zone. The strong pressure zone is arranged in a plane of the rigid punch close to the curved surface of the rigid punch, and the air avoidance zone is arranged in a plane between the two strong pressure zones; the elastic die is connected to the upper die base, and the elastic die has a high elastomer and a low elastomer. The high elastomer is arranged corresponding to the strong pressure zone, and the low elastomer is arranged corresponding to the air avoidance zone, and the elastic modulus of the high elastomer is greater than the elastic modulus of the low elastomer.

[0009] Through the above technical solution, the elastic die with zoned arrangement realizes accurate zoned pressure application by utilizing elastic bodies with different elastic moduli corresponding to the pressure requirements of different regions of the rigid punch, thereby improving the adjustability of the stamping effect.

[0010] In the present invention, the punching device further comprises a cylinder and a varistor, wherein the cylinder is connected between the upper die base and the elastomer; the varistor is connected between the cylinder and the elastomer;

[0011] The resistance of the varistor is maintained at a preset value by adjusting the extension amount of the cylinder.

[0012] Through the above technical solution, the extension amount of the cylinder is adjusted to keep the resistance value of the varistor stable so that the elastomer can obtain a stable pressure value, thereby realizing dynamic compensation of the pressure in the strong pressure area and improving the stability during the stamping process.

[0013] In the present invention, the above-mentioned stamping device also includes a transverse movement unit, which is connected between the varistor and the elastic body. When the elastic body is subjected to a transverse force, the transverse movement unit moves the elastic body to the side of the low elastic body. When the elastic body is not subjected to a transverse force, the low elastic body rebounds to reset the elastic body.

[0014] Through the above technical solution, a lateral movement unit is used to reduce the heat accumulation and friction damage caused by the increase in friction between the elastomer and the surface of the aluminum substrate after the elastomer is compressed and deformed, thereby improving the durability of the elastomer and the surface quality of the aluminum substrate.

[0015] In the present invention, the above-mentioned stamping device also includes a guide column, a first magnet and a second magnet, the guide column is connected to the upper die base; the first magnet is connected to the lower die base; the second magnet is connected to the end of the guide column away from the upper die base, and the same poles of the first magnet and the second magnet are arranged facing each other.

[0016] Through the above technical solution, the mutual repulsion of the same poles of the magnets is used to avoid excessive closing of the upper and lower mold bases when there are partial errors in the stroke parameters of the press, which may cause damage to the mold.

[0017] In the present invention, the punching device further comprises a lower die pad, the lower die pad is connected to the bottom of the lower die seat, and the first magnet is connected to the lower die pad.

[0018] Through the above technical solution, the lower die pad is used to install the first magnet, which reduces the deformation of the lower die seat caused by the force of the first magnet. At the same time, the maintenance performance is improved because of the easy processing and convenient replacement of the lower die pad.

[0019] In the present invention, the first magnet and the second magnet are electromagnets or neodymium magnets.

[0020] Through the above technical solution, the use of electromagnets or neodymium magnets can obtain greater magnetic force in a smaller area, increase the threshold of the magnet's impact resistance, and improve protection.

[0021] In the present invention, the punching device further comprises air-avoiding grooves, and a plurality of air-avoiding grooves are arranged in a mesh shape at the bottom of the air-avoiding area.

[0022] Through the above technical solution, a mesh-shaped air-avoiding groove is used to accommodate aluminum chips generated by friction on the back side of the aluminum substrate, thereby reducing the wear rate of the back side of the aluminum substrate.

[0023] In the present invention, the punching device further comprises a heating wire, and the heating wire is connected to the bottom of the air-avoiding groove.

[0024] Through the above technical solution, the aluminum chips generated once are heated by electric heating wire to oxidize them into stable oxides, thereby avoiding the potential safety hazards caused by the accumulation of a large amount of aluminum chips.

[0025] In the present invention, the punching device further comprises a roller connected to the top of the curved surface of the rigid punch, and the surface of the roller smoothly transitions to the curved surface.

[0026] Through the above technical solution, the roller is used to convert the sliding friction into rolling friction when the aluminum substrate slides in, thereby reducing the generation of aluminum chips and improving the safety of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 An axonometric diagram of a stamping device for an aluminum single plate provided in an embodiment of the present invention;

[0029] Figure 2A side view of a punching device for an aluminum plate provided in an embodiment of the present invention;

[0030] Figure 3 for Figure 2 Sectional view at AA in the figure;

[0031] Figure 4 for Figure 3 A local enlarged view of point B in FIG.

[0032] Figure 5 A schematic diagram of the structure of the upper die base and the elastic die after assembly provided by an embodiment of the present invention;

[0033] Figure 6 An exploded view of an upper die base and an elastic die provided in an embodiment of the present invention;

[0034] Figure 7 for Figure 2 Sectional view at CC in FIG.

[0035] Figure 8 A schematic diagram of the structure of the lower die base and the rigid punch after assembly provided by an embodiment of the present invention;

[0036] Fig. 9 A side view of the lower die base and the rigid punch after assembly provided by an embodiment of the present invention;

[0037] Fig.10 for Fig. 9 Sectional view at DD in the figure;

[0038] Fig.11 for Fig.10 A local enlarged view of point E in FIG.

[0039] Fig.12 An exploded view of the lower die base and the rigid punch provided in an embodiment of the present invention.

[0040] Icons: 101-lower die base; 102-lower die pad; 110-rigid punch; 111-avoidance area; 1111-avoidance groove; 1112-heating wire; 112-roller; 113-plug; 120-guide sleeve; 121-first magnet; 201-upper die base; 210-elastic die; 211-first elastic body; 212-second elastic body; 213-third elastic body; 214-fourth elastic body; 215-fifth elastic body; 216-cylinder; 217-varistor; 220-transverse unit; 221-fixed block; 222-sliding body; 223-transverse block; 230-guide column; 231-second magnet. DETAILED DESCRIPTION

[0041] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0042] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be welding, bolt connection, or riveting; it can be fixed connection, detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] Example:

[0046] Please refer to Figures 1 to 12 , Figures 1 to 12 An embodiment of the present application is shown.

[0047] This embodiment provides a punching device for an aluminum plate, such as Figures 1 to 3 As shown, it includes a lower die base 101 and an upper die base 201, which also includes a rigid punch 110 and an elastic die 210. The rigid punch 110 is connected to the lower die base 101, and the rigid punch 110 has a strong pressure area and an air avoidance area 111. The strong pressure area is arranged in the plane of the rigid punch 110 close to the curved surface of the rigid punch 110, and the air avoidance area 111 is arranged in the plane between the two strong pressure areas; the elastic die 210 is connected to the upper die base 201, and the elastic die 210 has a high elastomer and a low elastomer. The high elastomer is arranged corresponding to the strong pressure area, and the low elastomer is arranged corresponding to the air avoidance area 111. The elastic modulus of the high elastomer is greater than the elastic modulus of the low elastomer.

[0048] When manufacturing, Figure 3As shown, the high elastomer is specifically the second elastomer 212 and the fourth elastomer 214, and the low elastomer is specifically the first elastomer 211, the third elastomer 213 and the fifth elastomer 215, wherein the second elastomer 212 and the fourth elastomer 214 respectively perform strong pressure on the top R of the rigid convex mold 110 and the tangent of the two end inclined surfaces 15 cm backward (the strong pressure is specifically to use blue tan or red single brush to both sides of the aluminum substrate and then perform stamping, and after the stamping is completed, the blue tan or red single at the position of the aluminum substrate corresponding to the strong pressure area is basically completely attached to the high elastomer), and the third elastomer 213 and the fifth elastomer 215 correspond to the plane area of ​​the rigid convex mold 110, as shown Figure 8 and Fig. 9 As shown, a void zone 111 is provided in the plane area, which is 0.05 mm lower than the molding surface of the rigid punch 110 and has a 5 cm wide transition slope to prevent the steps from scratching the back of the aluminum substrate, and the contact between the third elastomer 213, the fifth elastomer 215 and the void zone 111 on the aluminum substrate is virtual pressure (the virtual pressure is specifically to use blue tan or red single brush to brush on both sides of the aluminum substrate and then stamping, and after the stamping is completed, the blue tan or red single part of the virtual pressure area corresponding to the aluminum substrate position adheres to the low elastomer and the void zone 111, and the attachment rate is <50%), and the top R of the rigid punch 110 corresponding to the first elastomer 211 is specifically a non-contact area for void avoidance.

[0049] During molding, the top R of the aluminum substrate is tightly attached to the rigid punch 110 and folded downward under the control of the fourth elastic body 214 on both sides. When the six strong pressure areas are in contact (the two sides of the top convex R and the two sides of the bottom concave R), the aluminum substrate in the inclined part is slightly stretched and deformed to extend toward both ends due to the locking of the strong pressure areas, and the aluminum substrate in the plane position at both ends is free to expand and contract, and then the strong pressure areas are further compacted to complete the stamping.

[0050] Through the above technical solution, the elastic die 210 with zoned arrangement uses elastic bodies with different elastic moduli to correspond to the pressure requirements of different regions of the rigid punch 110 to achieve accurate zoned pressure application and improve the adjustability of the stamping effect.

[0051] As a preferred implementation method, Figure 3 and Figure 6 As shown, the punching device further includes a cylinder 216 and a varistor 217. The cylinder 216 is connected between the upper die base 201 and the elastomer; the varistor 217 is connected between the cylinder 216 and the elastomer;

[0052] The resistance of the varistor 217 is maintained at a preset value by adjusting the extension amount of the cylinder 216 .

[0053] The setting is to determine the pressure required for the high pressure zone according to the process requirements, and then set the resistance value of the varistor 217 at this pressure to a preset value according to the required pressure. The cylinder 216 is connected to the air pump, and the air pump controls the extension and contraction of the cylinder 216 according to the resistance value of the varistor 217 after comparison by the processor.

[0054] It should be noted that each adjustment is made based on the maximum or minimum resistance value of the varistor 217 obtained in the previous stroke, and then the cylinder 216 is adjusted when the upper and lower molds are separated. Compared with the prior art that directly adjusts the input pressure of the cylinder 216 (the prior art adjusts the pressure of the cylinder 216 when the pier is dead), it has a more accurate reference value (the initial extension of the cylinder 216 determines the initial amount of gas in the cylinder bodies at both ends of the cylinder 216, and can be more accurately directly adjusted by the pre-tested output pressure. This adjustment method has better balance than only adjusting the pressure in a single cylinder body after the cylinder 216 is fully extended, and the cylinder 216 is not prone to the risk of explosion due to instantaneous excessive pressure) and zero-load adjustment (it will not cause damage to the aluminum substrate or explosion of the cylinder 216 due to excessive pressure). Safety.

[0055] Through the above technical solution, the extension amount of the adjusting cylinder 216 is used to keep the resistance value of the varistor 217 stable so that the elastomer can obtain a stable pressure value, thereby realizing dynamic compensation of the pressure in the strong pressure area and improving the stability during the stamping process.

[0056] As a preferred implementation method, Figure 3 and Figure 4 As shown, the above-mentioned stamping device also includes a transverse movement unit 220, which is connected between the varistor 217 and the elastomer. When the elastomer is subjected to a transverse force, the transverse movement unit 220 moves the elastomer to the side of the low-elastic body. When the elastomer is not subjected to a transverse force, the low-elastic body rebounds to reset the elastomer.

[0057] Specifically, the transverse unit 220 includes a fixed block 221, a sliding body 222 and a transverse block 223. The fixed block 221 is connected to the varistor 217. The transverse block 223 is connected to the fixed block 221 in a transversely slidable manner. The sliding body 222 abuts between the transverse block 223 and the fixed block 221. The sliding body 222 is elastic.

[0058] When in use, as the elastomer continues to be pressed downward and further hits the strong pressure zone, the elastomer is deformed as the pressure gradually increases. After the elastomer is deformed by pressure, the contact area and surface gap increase, and the friction force on the surface of the aluminum substrate further increases. Because the elastomer is located on the inclined surface, as it continues to move downward, there will be a slight downward displacement along the bottom, which will cause the elastomer to pull the aluminum substrate along the inclined surface. The repeated combination of friction and pulling will cause the elastomer to deform laterally and generate heat, and even heat accumulation will occur. After being heated, the friction force of the elastomer will be further increased and the elastic modulus of the elastomer will be reduced. The lateral movement unit 220 is as follows: Figure 4 The interlocking mode with gaps shown in the figure enables a gap for lateral movement between the fixed block 221 and the lateral movement block 223. Figure 3 and Figure 6 As shown, the low-elastic body, specifically the third elastomer 213 and the fifth elastomer 215, has a through hole in the middle. When the high-elastic body slides toward the low-elastic body, the side wall of the low-elastic body will be squeezed to make it concave inward, allowing the high-elastic body to undergo a slight lateral displacement. The lateral displacement and the compression deformation of the sliding body 222 ensure that the high-elastic body does not displace, thereby reducing the heat accumulation caused by the increase in friction and displacement.

[0059] It should be noted that if there is no lateral movement unit 220, whether the elastomer has sliding friction relative to the aluminum substrate depends on the elastomer material and surface friction. However, regardless of whether the elastomer has sliding friction relative to the aluminum substrate, additional heat will be generated (if sliding displacement occurs, heat will be generated on the sliding contact surface due to the increased friction. If no sliding displacement occurs, heat will be generated inside the elastomer due to twisting and deformation. For example, repeated bending of an iron wire will cause the bend to heat up until it breaks).

[0060] Through the above technical solution, the lateral movement unit 220 is used to reduce the heat accumulation and friction damage caused by the increase of friction between the elastomer and the surface of the aluminum substrate after the elastomer is compressed and deformed, thereby improving the durability of the elastomer and the surface quality of the aluminum substrate.

[0061] As a preferred embodiment, the above-mentioned stamping device also includes a guide column 230, a first magnet 121 and a second magnet 231, the guide column 230 is connected to the upper die base 201; the first magnet 121 is connected to the lower die base 101; the second magnet 231 is connected to the end of the guide column 230 away from the upper die base 201, and the same poles of the first magnet 121 and the second magnet 231 are arranged facing each other.

[0062] During use, the prior art mostly adopts setting a pier dead block and a pier dead surface on the upper and lower mold bases to limit the closing height of the upper and lower molds. However, in the actual production process, due to the inertia of the press slider, failure of the limit mechanism, incorrect input parameters, and raising the pier dead block for grinding during the trial mold, there is a probability of crushing the pier dead block or even fracturing the mold base. Therefore, the two magnets are used to repel each other, which can form resistance in a non-contact manner to prevent the pier dead block from being crushed and flying out to injure people, and can also ensure that the mold will not be directly crushed when any parameter of the press slider pressure or the downward stroke is wrong.

[0063] It should be noted that when errors occur in the press slide pressure and the downward stroke and the slide pressure is much greater than the repulsive force between the magnets, it will still cause irreversible damage to the mold.

[0064] Through the above technical solution, the mutual repulsion of the same poles of the magnets is used to avoid excessive closing of the upper and lower mold bases 101 when there is a partial error in the stroke parameters of the press, which may cause damage to the mold.

[0065] As a preferred implementation method, Figure 3 and Fig.12 As shown, the stamping device further includes a lower die pad 102 , the lower die pad 102 is connected to the bottom of the lower die base 101 , and the first magnet 121 is connected to the lower die pad 102 .

[0066] Through the above technical solution, the lower die pad 102 is used to install the first magnet 121, which reduces the deformation of the lower die base 101 caused by the force of the first magnet 121. At the same time, the maintenance performance is improved because the lower die pad 102 is easy to process and easy to replace.

[0067] As a preferred implementation, the first magnet 121 and the second magnet 231 are electromagnets or nepheline magnets.

[0068] The use of electromagnets can increase the magnetic force by increasing the number of coils, and neodymium magnets have the greatest natural magnetic force.

[0069] Through the above technical solution, the use of electromagnets or neodymium magnets can obtain greater magnetic force in a smaller area, increase the threshold of the magnet's impact resistance, and improve protection.

[0070] As a preferred implementation method, Figure 8 and Fig. 9 As shown, the punching device further includes air-avoiding grooves 1111 , and a plurality of air-avoiding grooves 1111 are arranged in a mesh shape at the bottom of the air-avoiding area 111 .

[0071] During stamping, aluminum powder and aluminum chips dropped due to friction between the back of the aluminum substrate and the rigid punch 110 fall into the air avoidance groove 1111 of the air avoidance area 111 due to the sliding of the aluminum substrate.

[0072] Through the above technical solution, the mesh-shaped air-avoiding groove 1111 is used to accommodate aluminum chips generated by friction on the back side of the aluminum substrate, thereby reducing the wear rate of the back side of the aluminum substrate.

[0073] As a preferred implementation method, Fig.10 and Fig.11 As shown, the stamping device further includes a heating wire 1112 , and the heating wire 1112 is connected to the bottom of the air-avoiding groove 1111 .

[0074] When in use, with each downward pressure, the heating wire 1112 is energized for a short time through a high current power source to quickly heat the aluminum powder and aluminum chips in the air avoidance groove 1111 for a short time so that they are fully oxidized into stable aluminum oxide.

[0075] It should be noted that due to the free rebound of the aluminum substrate, the heat generated by the heating wire 1112 will stay briefly on the surface of the rigid punch 110 according to the stamping frequency. The heat will eliminate the internal stress of the aluminum substrate while the aluminum substrate is deformed by stamping, thereby reducing the amount of free rebound. When necessary, a heat-conducting metal is used to connect the heating wire 1112 in the rebound area after ACE analysis. For example, a copper sheet is used to quickly transfer the residual heat after the heating wire 1112 promotes the oxidation of aluminum powder and aluminum chips to the rebound area to eliminate the stress of the aluminum substrate.

[0076] Through the above technical solution, the electric heating wire 1112 is used to heat the aluminum chips produced once to oxidize them into stable oxides, thereby avoiding the accumulation of a large amount of aluminum chips to cause safety hazards.

[0077] As a preferred implementation method, Figure 8 and Fig.12 As shown, the punching device further includes a roller 112 , which is connected to the top of the curved surface of the rigid punch 110 , and the surface of the roller 112 smoothly transitions to the curved surface.

[0078] When in use, when feeding along the vertical direction of the convex R at the top of the rigid punch 110, a groove with a side opening is drilled on the side of the top of the convex R. After the roller 112 is inserted into the groove, its axis is fixedly connected to the bottom of the groove and the plug 113. The rolling surface of the roller 112 is tangent to the curved surface of the handle of the convex R (and the rolling surface replaces the side opening caused by the drilling groove). When the aluminum substrate is placed in, it rolls in contact with the rolling surface to reduce friction.

[0079] Through the above technical solution, the roller 112 is used to convert the sliding friction into rolling friction when the aluminum substrate slides in, thereby reducing the generation of aluminum chips and improving the safety of production.

[0080] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A stamping device for an aluminum plate, comprising a lower die base (101) and an upper die base (201), characterized in that: Also includes: A rigid punch (110) is connected to the lower die base (101), the rigid punch (110) having a strong pressure zone and an escape zone (111), the strong pressure zone being arranged at a position where the plane of the rigid punch (110) is close to the curved surface of the rigid punch, and the escape zone (111) being arranged in a plane between two of the strong pressure zones; The elastic concave mold (210) is connected to the upper mold base (201), and the elastic concave mold (210) has a high-elastic body and a low-elastic body. The high-elastic body is arranged corresponding to the strong pressure area, and the low-elastic body is arranged corresponding to the air avoidance area (111). The elastic modulus of the high-elastic body is greater than the elastic modulus of the low-elastic body.

2. The punching device for aluminum veneer according to claim 1, characterized in that: Also includes: A cylinder (216) connected between the upper die base (201) and the elastomer; A varistor (217) connected between the cylinder (216) and the elastomer; The resistance of the varistor (217) is maintained at a preset value by adjusting the extension amount of the cylinder (216).

3. The punching device for aluminum single plate according to claim 2, characterized in that: Also includes: A transverse movement unit (220) is connected between the varistor (217) and the elastic body. When the elastic body is subjected to a transverse force, the transverse movement unit (220) moves the elastic body toward the side of the low elastic body. When the elastic body is not subjected to a transverse force, the low elastic body rebounds to reset the elastic body.

4. The punching device for aluminum veneer according to claim 3, characterized in that: Also includes: A guide column (230) connected to the upper die base (201); A first magnet (121) connected to the lower die base (101); The second magnet (231) is connected to an end of the guide column (230) facing away from the upper die seat (201), and the first magnet (121) and the second magnet (231) have the same poles arranged facing each other.

5. The punching device for aluminum single plate according to claim 4, characterized in that: Also includes: A lower die pad (102) is connected to the bottom of the lower die base (101), and the first magnet (121) is connected to the lower die pad (102).

6. The punching device for aluminum veneer according to claim 5, characterized in that: The first magnet (121) and the second magnet (231) are electromagnets or nepheline magnets.

7. The punching device for aluminum single plate according to claim 6, characterized in that: Also includes: A plurality of air avoidance grooves (1111) are arranged in a mesh shape at the bottom of the air avoidance area (111).

8. The punching device for aluminum single plate according to claim 7, characterized in that: Also includes: The heating wire (1112) is connected to the bottom of the air avoidance groove (1111).

9. The punching device for aluminum single plate according to claim 8, characterized in that: Also includes: A roller (112) is connected to the top of the curved surface of the rigid male mold (110), and a surface of the roller (112) smoothly transitions to the curved surface.

Images