Cantilever type punching assembly and multi-station punching device

Abstract

The invention discloses a cantilever type punching assembly and a multi-station punching device.A base is arranged on a bottom plate of the cantilever type punching assembly, a punching die, a lifting assembly and a driving assembly are arranged on the base, and the lifting assembly is connected with the driving assembly and driven by the driving assembly to ascend and descend; a base plate is arranged on the base, a feeding groove with an opening in one side is formed in the base plate in the strip steel conveying direction, and strip steel penetrates through the feeding groove to be conveyed; the punching die comprises an upper die plate, a lower die core and a blanking plate, the upper die plate is inserted into the inserting groove of the lifting assembly, the lower die core and the blanking plate are inserted into the inserting groove of the base plate of the base, and the lower die core and the blanking plate are oppositely arranged on the upper side and the lower side of the feeding groove in a spaced mode. According to the cantilever type punching assembly, the opening slightly wider than the strip steel in thickness is formed in the front side of the base, and a rack structure jointly formed by the rear plate, the side plates and other plates is fully reinforced, so that although the cantilever type punching assembly belongs to a cantilever structure, the influence of hogging moment is effectively overcome, and the punching precision is fully guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of punching holes in a solar photovoltaic support, in particular to a cantilever punching assembly and a multi-station punching device. Background Art

[0002] Photovoltaic brackets are supporting components for photovoltaic power generation. Their usage is increasing. Existing photovoltaic brackets mainly use C or U-shaped steel. The existing production process of C or U-shaped steel for photovoltaic brackets generally involves purchasing unprocessed coiled steel raw materials from suppliers, and then performing a series of processing processes such as uncoiling, forming, and punching.

[0003] The punching mechanism of the existing photovoltaic bracket steel punching and forming production line is a gantry punching mechanism. The punching die is set on the gantry. The gantry spans the frame of the punching device through two vertical plates. The strip steel to be punched is transported to the area below the gantry of the gantry and between the two vertical plates for punching. The gantry punching mechanism has the following problems during use: (1) The lower die of the punching die of the gantry punching mechanism is fixed to the base through the die seat. Therefore, when replacing the die, it is necessary to remove the entire set including the die seat from the gantry and then replace it with a new set of die. On the one hand, the die replacement process is cumbersome, takes a long time, and has high disassembly and assembly costs; on the other hand, the die and the die seat are matched one by one. Therefore, when preparing materials, it is also necessary to match the die and the die seat one by one for preparation, which results in high component costs and inventory costs. (2) During the conveying process, the strip passes through the feeding holes of the two vertical plates of the gantry. The feeding holes are square holes with closed sides. Especially when punching wide strips, their rigidity is greatly reduced, affecting the punching accuracy. When problems occur in the punching of the strip, the strip cannot be taken out from the closed feeding hole of the gantry. The strip can only be removed by cutting off the waste, which will produce a lot of waste and cause a large waste of strip. Summary of the invention

[0004] In view of the shortcomings of the above-mentioned existing gantry punching mechanism, the applicant provides a cantilever punching assembly and a multi-station punching device with a reasonable structure. The cantilever punching structure is adopted to simplify the mold replacement procedure, shorten the disassembly and assembly time, reduce costs, and reduce the generation of strip waste.

[0005] The technical solution adopted by the present invention is as follows: A cantilever punching assembly is provided with a base on a bottom plate, a punching die, a lifting assembly and a driving assembly are provided on the base, the lifting assembly is connected to the driving assembly and driven to lift and lower by the driving assembly; a base plate is provided on the base, a feeding trough with one side opening is provided on the base plate along the conveying direction of the strip steel, and the strip steel passes through the feeding trough for conveying; the punching die comprises an upper template, a lower die core and a blanking plate, the upper template is inserted into a slot of the lifting assembly, the lower die core and the blanking plate are inserted into a slot of the base plate of the base, and the lower die core and the blanking plate are arranged at upper and lower sides of the feeding trough with relative spacing; when working, the strip steel passes through the feeding trough between the lower die core and the blanking plate, and one side thereof can extend out of the base plate from the opening end of the feeding trough.

[0006] As a further improvement of the above technical solution: The two ends of the lower mold core and the blanking plate are limited by sealing plates, and the sealing plates are fixed on the side surfaces of the side plates and are located outside the lower mold core and the blanking plate.

[0007] Guide strips are respectively arranged on the side surface of the base plate, corresponding to the upper and lower sides of the feeding end and the discharging end of the feeding trough; the guide strips are made of nylon material; and the guide strips extend inwardly toward the feeding trough.

[0008] The feeding slot opened on the base plate is an unthrough slot on the whole plate, or a slot space formed by combining multiple plates; a clearance slot is opened on the side plate corresponding to the upper template, and the clearance slot makes way for the installation of the upper template.

[0009] A supporting plate is arranged outside the opening end of the feeding trough.

[0010] A rear plate and two side plates are also provided on the base. The two side plates are located on one side of the rear plate and are arranged front and back along the conveying direction of the strip steel. The rear plate, the two side plates and the base plate are connected to each other through mortise and tenon structures and fixed by fasteners. The side plates are pressed against the bottom plate by a pressing plate, and the side plates can move along the pressing plate. An adjusting device is fixedly connected to the rear plate.

[0011] The lifting assembly includes a slider, a guide rod, and a limit device. The guide rod is fixedly connected to one side of the slider through a connecting plate, and the limit device is sleeved on the guide rod. The driving cylinder on the driving assembly is fixed to the top of the base through a fixing plate. A guide sleeve is provided on one side of the fixing plate corresponding to the guide rod. The guide sleeve is sleeved on the guide rod, and the guide rod can slide up and down along the guide sleeve. The limit device is located above the guide sleeve, and the limit device is limited by induction.

[0012] A multi-station punching device is provided with a plurality of cantilever punching stations, each of which is provided with a cantilever punching assembly in the same direction or in an opposite direction.

[0013] As a further improvement of the above technical solution: Each cantilever punching station is also provided with a first guide device, which is located on the incoming material side of the cantilever punching assembly; a gantry punching station is provided behind several cantilever punching stations, and the gantry punching station is provided with a gantry punching assembly and a second guide device, and the second guide device is located on the incoming material side of the gantry punching assembly; the first guide device and the second guide device are respectively provided with guide wheels, adjustment blocks, adjustment screws and positioning plates.

[0014] A clamping station and a leveling station are arranged before several cantilever punching stations. A clamping device is arranged on the clamping station, and a clamping roller is arranged on the clamping device, and the clamping roller is connected to a motor; a feed damping device is arranged on the leveling station, and a plurality of damping rollers are arranged on the feed damping device, and the plurality of damping rollers are arranged in two layers, and the strip passes between the two layers of damping rollers. The damping rollers are connected by linkage gears, and a guide structure is arranged between the damping rollers; a pulling station is also arranged after several cantilever punching stations, and a pulling device is arranged on the pulling station, and the pulling rollers of the pulling device are driven by a servo motor power device to pull the strip.

[0015] The beneficial effects of the present invention are as follows: The cantilever punching assembly of the present invention has an opening slightly wider than the thickness of the strip steel on the front side of the base, and the frame structure formed by multiple plates such as the rear plate and the side plate is fully strengthened. Therefore, although it is a cantilever structure, it has effectively overcome the influence of negative bending moment, thereby fully ensuring the accuracy of punching.

[0016] The cantilever punching assembly of the present invention adopts a base with an open front side. The base can move forward and backward perpendicular to the conveying direction of the steel strip to adjust the punching position. The steel strip can extend from the open front side of the base. When problems occur in the punching of the steel strip, the steel strip can be taken out from the open side of the base for processing or winding, thereby reducing the generation of steel strip waste and lowering material costs.

[0017] The cantilever punching assembly of the present invention can also be used to punch extra-wide strip steel. It only needs to utilize multiple components and arrange them in a manner where the open surfaces are relative to each other. That is, the holes on the left, middle or right side of the strip can be punched in batches, respectively. At the same time, the punching position can be adjusted in conjunction with the adjusting device to complete the punching operation at different longitudinal positions on the entire strip, thereby effectively solving the defect of insufficient rigidity caused by the large span of the gantry punching assembly for extra-wide strip steel.

[0018] The lower mold core and the blanking plate of the present invention are inserted on the base plate through slots, and are limited by the sealing plate. When replacing the mold, it is only necessary to remove the sealing plate, take out or put in the lower mold core and the blanking plate to complete the replacement. This method: on the one hand, greatly simplifies the mold replacement procedure, saves replacement time, and reduces the cost of disassembly and assembly; on the other hand, when preparing materials, it is only necessary to consider preparing the mold, and molds of various specifications are easier to make standardized products, which is conducive to the standardized production and preparation of molds, and reduces the cost of parts and inventory costs. A clearance groove is opened on the side panel to make way for the installation of the upper template. The upper template can be directly inserted into the lifting assembly from the clearance groove, or taken out from the lifting assembly, which simplifies the replacement procedure and saves replacement time.

[0019] The guide strip of the present invention guides the steel strip, ensuring that the steel strip will not deviate during high-speed transportation at the punching station, thereby ensuring the accuracy of punching. The guide strip made of nylon extends to a certain height into the feeding trough, thereby preventing the steel strip from being scratched and ensuring the surface quality of the steel strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the multi-station punching device of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the cantilever punching station.

[0022] Figure 3 A cross-sectional view of the cantilever punching station.

[0023] Figure 4 It is a schematic diagram of the structure of the cantilever punching assembly.

[0024] Figure 5 A cross-sectional view of the cantilever punching assembly.

[0025] Figure 6 for Figure 5 Enlarged view of part A in the middle.

[0026] In the figure: 100, frame; 200, strip steel; 101. Pinch and conveyor station; 1. Pinch and conveyor device; 11. Pinch and conveyor roller; 102. Leveling station; 2. Feed damping device; 21. Damping roller; 103, cantilever punching station; 3, cantilever punching assembly; 31, bottom plate; 32, base; 321, back plate; 322, side plate; 3221, make way slot; 323, base plate; 3231, feed slot; 324, pressing plate; 33, punching die; 331, upper die plate; 332, lower die core; 333, blanking plate; 34, lifting assembly; 341, slider; 342, guide rod; 343, limit device; 35, driving assembly; 351, driving cylinder; 352, fixing plate; 353, guide sleeve; 36, sealing plate; 37, guide strip; 38, support plate; 39, adjusting device; 4, first guiding device; 41, guide wheel; 42, adjusting block; 43, adjusting screw rod; 44, positioning plate; 104. Gantry punching station; 5. Gantry punching assembly; 6. Second guide device; 105. Material pulling station; 7. Material pulling device. DETAILED DESCRIPTION

[0027] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0028] like Figure 1 As shown, on the frame 100 of the multi-station punching device of the present invention, a clamping station 101, a leveling station 102, a plurality of cantilever punching stations 103, a gantry punching station 104, and a material pulling station 105 are sequentially arranged from front to back along the conveying direction of the strip steel 200. After the strip steel 200 is delivered from the previous process, it is clamped by the clamping station 101, sent to the leveling station 102 for leveling, sent to the cantilever punching station 103 and the gantry punching station 104 for punching, and then sent out by the material pulling station 105 and conveyed to the next process.

[0029] A pinching device 1 is provided on the pinching station 101, and a pinching roller 11 is provided on the pinching device 1. The pinching roller 11 is connected to and driven by a motor, and a lifting cylinder is also connected to the pinching roller 11, and the gap between the roller surfaces of the pinching roller 11 can be adjusted by the lifting cylinder.

[0030] The leveling station 102 is provided with a feed damping device 2, and a plurality of damping rollers 21 are provided on the feed damping device 2. The plurality of damping rollers 21 are arranged in two layers, and the strip steel 200 passes between the two layers of damping rollers 21, and the two layers of damping rollers 21 level the strip steel 200; the damping rollers 21 are connected by linkage gears to ensure the synchronization of the rotation of the damping rollers 21. A guide structure is provided between the damping rollers 21 to guide the strip steel 200 and prevent the strip steel 200 from running off.

[0031] like Figures 1 to 3 As shown, each cantilever punching station 103 is provided with a cantilever punching assembly 3 and a first guide device 4 , and the first guide device 4 is located at the material incoming side of the cantilever punching assembly 3 .

[0032] like Figures 2 to 5 As shown, the cantilever punching assembly 3 includes a bottom plate 31 fixedly connected to the frame 100 , a base 32 is arranged on the bottom plate 31 , and a punching die 33 , a lifting assembly 34 and a driving assembly 35 are arranged on the base 32 .

[0033] like Figures 2 to 5 As shown, the base 32 of the cantilever punching assembly 3 includes a rear plate 321, two side plates 322 arranged front and rear along the conveying direction of the strip steel 200, and a base plate 323 located at the bottom of the frame surrounded by the rear plate 321 and the two side plates 322. The rear plate 321, the two side plates 322, and the base plate 323 are connected to each other by a mortise and tenon structure and fixed by fasteners, with higher connection accuracy and more stable structure; the two side plates 322 are respectively pressed onto the bottom plate 31 by a pressing plate 324, the pressing plate 324 is fixed to the bottom plate 31, and the side plates 322 can move along the pressing plate 324; the side plates 322 are pressed by the pressing plate 324, which can reduce the vibration generated during the punching process, ensure that the punching station can work stably, and avoid affecting the accuracy of punching due to vibration. An adjusting device 39 is fixedly connected to the rear plate 321. The adjusting device 39 can drive the entire base 32 to move through the rear plate 321 to adjust the punching position. The moving direction of the base 32 is perpendicular to the conveying direction of the steel strip 200. A feed trough 3231 with an opening on one side is provided on the base plate 323 along the conveying direction of the steel strip 200. The open end of the feed trough 3231 is located on the side opposite to the rear plate 321. The steel strip 200 passes through the feed trough 3231 for conveyance, and one side of the steel strip 200 can extend out of the base plate 323 from the open end of the feed trough 3231. Guide strips 37 are respectively provided on the left and right side surfaces of the base plate 323, corresponding to the upper and lower sides of the feed end and the discharge end of the feed trough 3231. The guide strips 37 guide the steel strip 200 to ensure that the steel strip 200 will not deviate during the high-speed conveying process of the punching station, thereby ensuring the accuracy of punching. The guide strips 37 are made of nylon, such as Figure 6 As shown, the upper and lower guide strips 37 extend inwardly toward the feeding trough 3231 to a certain height, respectively. The guide strips 37 made of nylon extend inwardly into the feeding trough 3231 to a certain height, which can prevent the strip steel 200 from being scratched and ensure the surface quality of the strip steel 200. The base plate 323 is provided with a supporting plate 38 corresponding to the outer side of the opening end of the feeding trough 3231. The supporting plate 38 can support the strip steel 200 extending from the base plate 323 to prevent the strip steel 200 from being exposed to the outside and causing the strip steel 200 to sink, thereby affecting the punching accuracy during punching.

[0034] like Figure 3 , Figure 5As shown, the punching die 33 of the cantilever punching assembly 3 includes an upper die plate 331, a lower die core 332 and a blanking plate 333. The upper die plate 331 is inserted into the slot of the lifting assembly 34, and the lower die core 332 and the blanking plate 333 are inserted into the slot of the base plate 323 of the base 32. The slots of the lifting assembly 34 and the base plate 323 are both provided with steps, and the steps corresponding to the slots respectively limit the upper die plate 331, the lower die core 332 and the blanking plate 333 in the longitudinal direction; the slots of the lifting assembly 34 and the base plate 323 are through-opened along the conveying direction of the strip steel 200, and the upper die plate 331, the lower die core 332 and the blanking plate 333 are respectively inserted into the lifting assembly 34 or the base plate 323 along the conveying direction of the strip steel 200. A clearance groove 3221 is provided on the side plate 322 corresponding to the upper template 331. The clearance groove 3221 makes way for the installation of the upper template 331. The upper template 331 can be directly inserted into the lifting assembly 34 or taken out from the lifting assembly 34 from the clearance groove 3221. When replacing the mold, it is only necessary to take out or put in the upper template 331 from the clearance groove 3221 to complete the disassembly and assembly. There is no need to remove the side plate 322 and then disassemble and assemble it, which simplifies the replacement procedure and saves replacement time. The lower mold core 332 and the blanking plate 333 are arranged face to face on the base plate 323, which are the upper and lower sides of the feed trough 3231. The strip steel 200 passes between the lower mold core 332 and the blanking plate 333; the bottom surface of the lower mold core 332 is flush with the upper side surface of the feed trough 3231, and the top surface of the blanking plate 333 is flush with the lower side surface of the feed trough 3231. On the left and right sides of the base plate 323, corresponding to the outer sides of the lower mold core 332 and the blanking plate 333, sealing plates 36 are respectively provided. The sealing plates 36 are fixed on the side of the side plate 322, and the sealing plates 36 are blocked on the outer side of the slot of the base plate 323, forming the limiting structure of the lower mold core 332 and the blanking plate 333, and limiting the lower mold core 332 and the blanking plate 333 at both ends. The lower mold core 332 and the blanking plate 333 are inserted on the base plate 323 through the slot, and are limited by the sealing plates 36. When replacing the mold, it is only necessary to remove the sealing plates 36, take out or put in the lower mold core 332 and the blanking plate 333 to complete the replacement. This method: on the one hand, greatly simplifies the mold replacement procedure, saves replacement time, and reduces the disassembly and assembly cost; on the other hand, when preparing materials, only the mold preparation needs to be considered, and molds of various specifications are easier to make standardized products, which is conducive to the standardized production and preparation of molds, and reduces the cost of parts and inventory costs.

[0035] like Figures 2 to 5As shown, the lifting assembly 34 of the cantilever punching assembly 3 includes a slider 341, a guide rod 342, and a limit device 343. The guide rod 342 is fixedly connected to one side of the slider 341 through a connecting plate, and the limit device 343 is sleeved on the guide rod 342. The driving cylinder 351 on the driving assembly 35 is fixed to the top of the base 32 and located on the side away from the rear plate 321 through a fixing plate 352, and the slider 341 of the lifting assembly 34 is fixedly connected to the piston rod of the driving cylinder 351. A guide sleeve 353 is provided on one side of the fixing plate 352 corresponding to the guide rod 342, and the guide sleeve 353 is sleeved on the guide rod 342. The guide rod 342 can slide up and down along the guide sleeve 353. The guide rod 342 and the guide sleeve 353 cooperate to form a lifting guide structure of the slider 341, which guides the slider 341 to rise and fall, thereby ensuring the accuracy of punching. The limiting device 343 is located above the guide sleeve 353 to limit the punching stroke of the slider 341 . The limiting device 343 limits the position by induction.

[0036] like Figure 2 , Figure 3 As shown, the first guide device 4 of the cantilever punching station 103 includes two guide wheels 41 arranged at intervals in front and behind, the guide wheels 41 are connected to the adjusting screw rod 43 through the adjusting block 42, and the upper part of the two guide wheels 41 is connected with a positioning plate 44. The first guide device 4 is used to guide the feeding of the strip steel 200, ensure the accurate positioning of the center of the strip steel 200, and ensure the punching accuracy.

[0037] like Figure 1 As shown, the gantry punching station 104 is provided with a gantry punching assembly 5 and a second guide device 6, the second guide device 6 is located on the incoming material side of the gantry punching assembly 5, and the structure of the second guide device 6 is the same as that of the first guide device 4. The gantry punching station 104 is arranged behind the conveying direction of the strip steel 200 of the plurality of cantilever punching stations 103, and is used to punch the adjacent ends and tails of two adjacent profiles at the same time, so that the punching efficiency is higher.

[0038] like Figure 1 As shown, a pulling device 7 is provided on the pulling station 105, and the pulling roller of the pulling device 7 is driven by a servo motor power device to pull the steel strip 200, so the pulling force is stronger and the working efficiency is higher.

[0039] The cantilever punching assembly of the present invention adopts a base 32 with an open front side. The base 32 can move forward and backward in a direction perpendicular to the conveying direction of the steel strip 200 to adjust the punching position. The steel strip 200 can extend from the front open surface of the base 32. When problems occur in the punching of the steel strip 200, the steel strip 200 can be taken out from the open surface of the base 32 for processing or winding, thereby reducing the generation of waste steel strip 200 and reducing material costs.

[0040] The cantilever punching assembly of the present invention can also be used to punch holes in an ultra-wide steel strip 200, by using only a plurality of assemblies with open faces facing each other (e.g. Figure 1 The arrangement is as shown in the reverse schematic diagram of the third group of cantilever punching assemblies 3 in the figure, that is, the holes on the left, middle or right side of the strip can be punched in batches, and the punching position can be adjusted by cooperating with the adjusting device 39 to complete the punching operation at different longitudinal positions on the entire strip, thereby effectively solving the defect of insufficient rigidity caused by the large span of the gantry punching assembly for ultra-wide strips.

[0041] The above description is an explanation of the present invention, not a limitation of the present invention. The present invention may be modified in any form without violating the spirit of the present invention. Figure 5 The figure shows a non-through slot on the whole plate, which can also be a slot space formed by combining multiple plates.

Claims

1. A cantilever punching assembly, wherein a base (32) is arranged on a bottom plate (31), a punching die (33), a lifting assembly (34) and a driving assembly (35) are arranged on the base (32), the lifting assembly (34) is connected to the driving assembly (35) and is driven to rise and fall by the driving assembly (35); the characteristics are as follows: The base (32) is provided with a base plate (323), and a feeding trough (3231) with an opening on one side is provided on the base plate (323) along the conveying direction of the strip steel (200), and the strip steel (200) passes through the feeding trough (3231) for conveying; the punching die (33) includes an upper die plate (331), a lower die core (332) and a blanking plate (333), the upper die plate (331) is inserted into a slot of a lifting assembly (34), and the lower die core (332) is inserted into a slot of a lifting assembly (34). ) and the blanking plate (333) are inserted into the slot of the base plate (323) of the base (32), and the lower mold core (332) and the blanking plate (333) are arranged at the upper and lower sides of the feeding trough (3231) opposite to each other; during operation, the strip steel (200) passes through the feeding trough (3231) between the lower mold core (332) and the blanking plate (333), and one side portion thereof can extend out of the base plate (323) from the opening end of the feeding trough (3231).

2. The cantilever punching assembly according to claim 1, characterized in that: The two ends of the lower mold core (332) and the blanking plate (333) are limited by a sealing plate (36); the sealing plate (36) is fixed on the side surface of the side plate (322) and is located outside the lower mold core (332) and the blanking plate (333).

3. The cantilever punching assembly according to claim 1, characterized in that: Guide strips (37) are respectively arranged on the side surface of the base plate (323) and on the upper and lower sides corresponding to the feeding end and the discharging end of the feeding trough (3231); the guide strips (37) are made of nylon; and the guide strips (37) extend inwardly toward the feeding trough (3231).

4. The cantilever punching assembly according to claim 1, characterized in that: The feeding slot (3231) provided on the base plate (323) is a non-through slot on the whole plate, or a slot space formed by combining a plurality of plates; a clearance slot (3221) is provided on the side plate (322) corresponding to the upper template (331), and the clearance slot (3221) makes way for the installation of the upper template (331).

5. The cantilever punching assembly according to claim 1, characterized in that: A support plate (38) is provided outside the open end of the feeding trough (3231).

6. The cantilever punching assembly according to claim 1, characterized in that: A rear plate (321) and two side plates (322) are also provided on the base (32); the two side plates (322) are located on one side of the rear plate (321) and are arranged front and rear along the conveying direction of the strip steel (200); the rear plate (321), the two side plates (322), and the base plate (323) are connected to each other through a mortise and tenon structure and fixed by fasteners; the side plates (322) are pressed against the bottom plate (31) through a pressing plate (324), and the side plates (322) can move along the pressing plate (324); and an adjusting device (39) is fixedly connected to the rear plate (321).

7. The cantilever punching assembly according to claim 1, characterized in that: The lifting assembly (34) comprises a slider (341), a guide rod (342), and a limit device (343); the guide rod (342) is fixedly connected to one side of the slider (341) through a connecting plate, and the limit device (343) is sleeved on the guide rod (342); a driving cylinder (351) on the driving assembly (35) is fixed to the top of the base (32) through a fixing plate (352); a guide sleeve (353) is provided on one side of the fixing plate (352) corresponding to the guide rod (342); the guide sleeve (353) is sleeved on the guide rod (342), and the guide rod (342) can slide up and down along the guide sleeve (353); the limit device (343) is located above the guide sleeve (353), and the limit device (343) is limited by induction.

8. A multi-station punching device, characterized in that: A plurality of cantilever punching stations (103) are provided, and a cantilever punching assembly according to claim 1 is provided on each cantilever punching station (103) in the same direction or in an opposite direction.

9. The multi-station punching device according to claim 8, characterized in that: Each cantilever punching station (103) is also provided with a first guide device (4), and the first guide device (4) is located on the material-incoming side of the cantilever punching assembly (3); a gantry punching station (104) is provided behind a plurality of cantilever punching stations (103), and the gantry punching station (104) is provided with a gantry punching assembly (5) and a second guide device (6), and the second guide device (6) is located on the material-incoming side of the gantry punching assembly (5); the first guide device (4) and the second guide device (6) are respectively provided with guide wheels, adjustment blocks, adjustment screws and positioning plates.

10. The multi-station punching device according to claim 8, characterized in that: A pinching station (101) and a leveling station (102) are arranged before the plurality of cantilever punching stations (103); a pinching device (1) is arranged on the pinching station (101); a pinching roller (11) is arranged on the pinching device (1); and the pinching roller (11) is connected to a motor; a feed damping device (2) is arranged on the leveling station (102); a plurality of damping rollers (21) are arranged on the feed damping device (2); and a plurality of damping rollers (21) are arranged on the feed damping device (2). The steel strip (200) is arranged in two layers, the upper and lower layers, and passes between the two layers of damping rollers (21). The damping rollers (21) are connected by linkage gears, and a guide structure is arranged between the damping rollers (21). A material pulling station (105) is arranged behind the plurality of cantilever punching stations (103), and a material pulling device (7) is arranged on the material pulling station (105). The material pulling rollers of the material pulling device (7) are driven by a servo motor power device to pull the steel strip (200).

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