Continuous punching and feeding equipment for metal sheets

Abstract

The invention discloses metal sheet continuous punching and feeding equipment which comprises a punching machine body and a clamping frame, a punching head is mounted at the top end of the punching machine body, a limiting plate is mounted on the punching machine body, the position of the limiting plate corresponds to that of the punching head, the clamping frame is arranged on the top of the limiting plate, and a pair of conveying guide rails is mounted on the clamping frame. A guide frame and a cleaning frame are installed at the two ends of the pair of conveying guide rails respectively, the guide frame is used for conveying and pre-cleaning a metal plate, a pair of conveying shafts is arranged on the cleaning frame, a plurality of reset pressing rods are arranged on the conveying shafts, a clamping shaft is installed at one end of a single set of reset pressing rods, and the pair of clamping shafts is used for abutting against the two sides of the punched metal plate; compared with the prior art, through the design of the staggered reset pressing rods and the elastic clamping shafts on the cleaning frame, active polishing and chipping cleaning of burrs on the surface of a punched metal plate are achieved, the clamping shafts can deform to shake off chippings, a transmission wheel rubber shaft rubs to assist chipping removal, and burr residues and chipping accumulation are effectively reduced; the subsequent processing quality is guaranteed; and the maintenance frequency is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of punching equipment, and specifically relates to a continuous punching and feeding equipment for metal sheets. Background Art

[0002] As the core device of cold stamping processing, stamping dies are widely used in processes such as cutting and forming of metal sheets.

[0003] Traditional stamping dies usually rely on manual operation to achieve the positioning, stamping, and taking out of the sheets. The operator needs to frequently put his hand into the closed area of the die to place and take out the sheets, which is extremely likely to cause pinching accidents. Moreover, it relies on manual feeding one by one, resulting in low production efficiency. After the raw material is punched, the excess waste also needs to be uniformly recycled. However, there are burrs on the edge of the punched waste, which are prone to accidental scratches during the subsequent handling and recycling process, posing a great safety hazard. Metal debris is likely to remain on the surface of the metal raw material and is easily stuck on the surface of the punched sheet during the punching process, resulting in the production of defective products. Therefore, traditional punching processing also needs to pre-clean the sheets to improve the processing quality of the equipment. For this reason, we propose a continuous punching and feeding equipment for metal sheets to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a continuous punching and feeding equipment for metal sheets to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A continuous punching and feeding equipment for metal sheets, including,

[0006] A punching machine main body, on the top of which a punching head is installed, and a limiting plate is installed on the punching machine main body, and the position of the limiting plate corresponds to that of the punching head;

[0007] A clamping frame, which is arranged on the top of the limiting plate, and a pair of transmission guide rails are installed on the clamping frame, and a guide frame and a cleaning frame are respectively installed at both ends of the pair of transmission guide rails;

[0008] The guide frame is used for pre-cleaning of metal plate transmission, and a pair of transmission shafts are provided on the cleaning frame, and a plurality of reset pressure rods are provided on the transmission shaft. A clamping shaft is installed at one end of a single group of reset pressure rods, and the pair of clamping shafts are used to abut against both sides of the metal plate after punching and are used for auxiliary cleaning of burrs. When the metal plate needs to be punched, it can be clamped on the top of the clamping frame, and as the rotating shaft abuts against its edge, it can drive the metal plate to be transmitted, and cooperate with the buffer pressure plate on the guide frame to pre-clean the surface of the metal plate to reduce the residue of debris and residues, and during the stamping process, the rectangular frame on the upper side of the clamping frame can be pushed by the push plate, so that the remaining position of the wider metal plate can be stamped in parallel, and after the punched metal plate moves between the cleaning frames, the surface of the metal plate can be rubbed with the help of the clamping shaft to reduce the residue of burrs, which is convenient for subsequent unified recycling.

[0009] Preferably, the cleaning frame is provided with a clamping frame at the bottom side, and a positioning shaft is installed on the side wall of the cleaning frame, and a hollow shaft is slidably provided on the inner wall of the positioning shaft;

[0010] A sliding groove for the transmission shaft is provided on one side of the hollow shaft, and compression shafts are installed at both ends of the transmission shaft. A limit block is provided on the outer wall of the hollow shaft on one side, and the limit block is used to limit the transmission shaft. When the restriction of the limit block is released, the transmission shafts on both sides can be brought together under the action of the compression shaft and rest against both sides of the punched sheet.

[0011] Preferably, the reset pressure rod is bent, and one end of the reset pressure rod connected to the clamping shaft is elastic. The reset pressure rods on the transmission shafts on both sides are staggered. A plurality of clamping grooves are provided on the clamping shaft, and a plurality of grinding shafts are provided inside the clamping grooves for cleaning burrs on the surface of the metal plate after punching. The reset pressure rod adopts a bent elastic structure, which can deform and buffer external force impact during the grinding process to avoid jamming of the metal plate transmission. The staggered reset pressure rods and elastic clamping shafts on the cleaning frame are designed to realize active grinding and debris cleaning of burrs on the surface of the metal plate after punching.

[0012] Preferably, a support rod is installed between the reset pressure rod, a transmission wheel is rotatably provided on the support rod, a plurality of elastic sheets are provided on the surface of the transmission wheel, and a rubber shaft is provided on the edge of the elastic sheet. The transmission wheel can be located on both sides of the metal plate and rotated by means of the friction between the rubber shaft and the metal plate to assist in cleaning debris.

[0013] Preferably, the guide frame is composed of a pair of horizontal plates, and the guide frame is installed at the bottom of the transmission guide rail. Connecting shafts are installed on both sides of the guide frame, and a transmission frame is movably provided on the connecting shaft. A positioning plug plate is installed on the top of the transmission frame, and a buffer pressure plate is installed between the positioning plug plates. The buffer pressure plate is against the punching surface of the metal plate to assist in cleaning. The parallel limit design of the buffer pressure plate takes into account the stability of plate transmission, reduces the risk of offset and tilt, and improves the punching accuracy and processing efficiency.

[0014] Preferably, a plurality of chip cleaning pieces are installed at the bottom of the buffer pressure plate, and an inclination angle is provided between the chip cleaning piece and the bottom of the buffer pressure plate. A straight groove connecting the rubber shaft is opened at the bottom of the chip cleaning piece. The guide frame integrates the buffer pressure plate and the inclination chip cleaning piece, and the surface debris pre-cleaning is completed synchronously during the metal plate transmission process through the rubber shaft friction and the gap chip guiding structure.

[0015] Preferably, a docking groove is provided on the surface of the limiting plate, the interior of the docking groove is used to clamp the mold, and the position of the docking groove corresponds to the clamping frame for subsequent punching processing.

[0016] Preferably, a plurality of connecting plates are installed on the transmission guide rail, and the connecting plates are symmetrically arranged in pairs on both sides of the clamping frame. Connecting end blocks are installed on the connecting plates, and a driving motor is installed inside the connecting end block. A rotating shaft is installed on the output end of the driving motor for supporting both sides of the metal plate to assist transmission.

[0017] Preferably, the clamping frame is a double-layer rectangular frame, the upper rectangular frame is slidably clamped on the lower rectangular frame, a pair of reset belts are installed on the side walls of the clamping frame, and the two ends of the reset belts are respectively clamped on the two side rectangular frames for transmission reset;

[0018] The movable card on the limit plate is provided with a push plate, and an adjustable feed plate is installed between the push plate and the upper rectangular frame to control the movable distance of the upper rectangular frame. The clamping frame adopts a double-layer sliding structure, which is designed with a push plate and an adjustable feed plate. The punching position of the upper rectangular frame can be flexibly adjusted to achieve continuous punching of multiple areas of the same plate. Parallel processing can be completed without repositioning, avoiding secondary punching accuracy problems caused by plate deformation. It is suitable for processing metal plates of various sizes and significantly improves the applicability of the equipment.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention realizes active grinding and chip cleaning of burrs on the surface of metal plates after punching through the staggered reset pressure rods and elastic clamping shaft design on the cleaning frame. The clamping shaft can be deformed to shake off the chips, and the friction of the transmission wheel rubber shaft assists in chip removal, which effectively reduces burr residue and chip accumulation, ensures the quality of subsequent processing and reduces the maintenance frequency;

[0021] 2. The present invention adopts a double-layer sliding structure for the clamping frame, combined with the design of the pushing plate and the adjustable feeding plate, which can flexibly adjust the punching position of the upper rectangular frame, realize continuous punching in multiple areas of the same plate, complete parallel processing without repositioning, avoid the problem of secondary punching accuracy caused by plate deformation, is applicable to the processing of metal plates of various sizes, and significantly improves the applicability of the equipment;

[0022] 3. The present invention integrates a buffer pressing plate and an inclined angle chip cleaning piece on the guiding frame. Through the rubber shaft friction and the gap chip guiding structure, the surface debris is pre-cleaned synchronously during the transmission of the metal plate. The parallel limit design of the buffer pressing plate takes into account the stability of the plate transmission, reduces the risk of deviation and inclination, and improves the punching accuracy and processing efficiency;

[0023] 4. The present invention adopts a bent elastic structure for the reset pressure rod, which can deform and buffer external force impacts during the grinding process, avoid the jamming of the metal plate transmission, and the linkage design of the sliding groove of the clamping shaft and the transmission shaft further optimizes the dynamic adjustment of the grinding pressure to ensure the smoothness of continuous processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 is a schematic diagram of the structure of the limiting plate of the present invention;

[0026] Figure 3 is the present invention Figure 2 a partial enlarged schematic diagram at position A in;

[0027] Figure 4 is a partial structure schematic diagram of the clamping frame of the present invention;

[0028] Figure 5 is the present invention Figure 4 a partial enlarged schematic diagram at position B in;

[0029] Figure 6 is a schematic diagram of the structure of the guiding frame of the present invention;

[0030] Figure 7 is a schematic diagram of the structure of the cleaning frame of the present invention;

[0031] Figure 8 is a partial structure schematic diagram of the transmission shaft of the present invention;

[0032] In the figure: 1. Stamping machine main body; 2. Limit plate; 3. Clamping frame; 4. Guide frame; 5. Cleaning frame; 11. Punching head; 21. Docking groove; 31. Reset belt; 33. Pushing plate; 34. Feeding plate; 35. Transmission guide rail; 36. Connecting plate; 37. Connecting end block; 371. Rotating shaft; 41. Transmission frame; 42. Positioning plug; 43. Buffer pressing plate; 44. Chip cleaning piece; 51. Positioning shaft; 52. Hollow shaft; 521. Limit clamping block; 53. Transmission shaft; 531. Compression shaft; 54. Reset pressure rod; 55. Clamping shaft; 56. Support rod; 57. Transmission wheel. Detailed implementation manner

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Please refer to Figures 1-8 , the present invention provides a technical solution: a continuous punching and feeding device for metal sheets, including

[0035] A stamping machine main body 1, on the top of which a punching head 11 is installed, and a limit plate 2 is installed on the stamping machine main body 1, and the position of the limit plate 2 corresponds to that of the punching head 11;

[0036] A clamping frame 3, which is arranged on the top of the limit plate 2, and a pair of transmission guide rails 35 are installed on the clamping frame 3, and a guide frame 4 and a cleaning frame 5 are respectively installed at both ends of the pair of transmission guide rails 35;

[0037] Among them, the guide frame 4 is used for pre-cleaning the transmission of the metal plate. A pair of transmission shafts 53 are provided on the cleaning frame 5, and a plurality of reset pressure rods 54 are provided on the transmission shafts 53. One end of a single group of reset pressure rods 54 is provided with a clamping shaft 55. A pair of clamping shafts 55 are used to abut against both sides of the punched metal plate for auxiliary burr cleaning. When the metal plate needs to be punched and processed, it can be clamped on the top of the clamping frame 3. As the rotating shaft 371 abuts against its edge, it can drive the transmission of the metal plate, and cooperate with the buffer pressing plate 43 on the guide frame 4 to pre-clean the surface of the metal plate, reduce the remaining of chips and residues, etc. And during the stamping process, the rectangular frame on the upper side of the clamping frame 3 can be pushed by the pushing plate 33 to perform parallel stamping treatment on the remaining positions of the wider metal plate. After the punched metal plate moves between the cleaning frames 5, the surface of the metal plate can be frictionally treated by the clamping shaft 55 to reduce the remaining burrs and facilitate subsequent unified recycling treatment.

[0038] Such as Figure 7 And Figure 8As shown, in order to fit the metal sheet during the transmission process, the cleaning frame 5 is clamped to one side of the bottom of the clamping frame 3. Positioning shafts 51 are installed on the side walls of the cleaning frame 5, and hollow shafts 52 are slidably arranged on the inner walls of the positioning shafts 51;

[0039] A sliding groove for the movement of the transmission shaft 53 is provided on one side of the hollow shaft 52. Compression shafts 531 are installed at both ends of the transmission shaft 53. A limit clamping block 521 is clamped on the outer wall of one side of the hollow shaft 52. The limit clamping block 521 is used for limiting the transmission shaft 53. According to the equipment operation requirements and the sheet transmission characteristics, the three-dimensional spatial position of the hollow shaft 52 needs to be calibrated. The limit clamping block 521 can be taken out, so that under the action of the compression shaft 531, the transmission shafts 53 on both sides are pulled to move inside the sliding groove, and the clamping shaft 55 is used to abut against the surface of the metal plate after punching.

[0040] As Figure 8 shown, in order to polish and clean the metal plate, the reset pressure rod 54 is bent. One end of the reset pressure rod 54 connected to the clamping shaft 55 has elasticity. The reset pressure rods 54 on the two transmission shafts 53 are arranged staggeredly. A plurality of clamping grooves are provided on the clamping shaft 55, and a plurality of grinding shafts are arranged inside the clamping grooves, which are used for cleaning the burrs on the surface of the metal plate after punching. The reset pressure rod 54 itself has elasticity. When the grinding transmission process is stuck, the elastic end of the reset pressure rod 54 can be deformed to reduce the situation of the metal plate being stuck during the transmission process. When the clamping shaft 55 moves with the reset pressure rod 54, it is also convenient to shake off the debris accumulated on the grinding sheet, etc., and reduce the accumulation of debris near the clamping shaft 55 during the grinding process, affecting the subsequent grinding effect.

[0041] As Figure 8 shown, in order to reduce the residue of debris, a support rod 56 is installed between the reset pressure rods 54. A transmission wheel 57 is rotatably arranged on the support rod 56. A plurality of elastic sheets are arranged on the surface of the transmission wheel 57, and rubber shafts are arranged at the edges of the elastic sheets. The transmission wheel 57 can be located on both sides of the metal plate and rotate by means of the friction between the rubber shaft and the metal plate, which is used for assisting in cleaning debris. During the transmission process, the elastic sheets on the outside of the transmission wheel 57 can move in a circular motion under the action of the rubber shaft. As the elastic sheets move in a circular motion, it can play a role in assisting chip removal and reducing the blockage generated during the grinding process.

[0042] As Figure 6As shown in the figure, in order to reduce the situation where debris remains on the surface of the metal plate during the punching process and affects the processing quality, the guide frame 4 is composed of a pair of cross plates. The guide frame 4 is installed at the bottom of the transmission guide rail 35. Connecting shafts are installed on both sides of the guide frame 4, and a transmission frame 41 is movably clamped on the connecting shafts. A positioning plug 42 is installed at the top of the transmission frame 41, and a buffer pressing plate 43 is installed between the positioning plugs 42. The buffer pressing plate 43 abuts against the punching surface of the metal plate for auxiliary cleaning. The buffer pressing plate 43 can abut against the top of the metal plate, and can quickly clean the debris and the like remaining on its surface by means of friction, reducing the remaining situation. And by arranging the buffer pressing plate 43 parallel to the metal plate, the metal plate during transmission can be limited, reducing the situation of tilting and offset during transmission.

[0043] As Figure 6 shown, in order to ensure the pre-cleaning efficiency of the metal plate surface, a plurality of chip cleaning pieces 44 are installed at the bottom of the buffer pressing plate 43. An inclination angle is provided between the chip cleaning pieces 44 and the bottom of the buffer pressing plate 43, which can guide the debris generated by cleaning along the side with a larger gap, facilitating the maintenance and processing by the operator. A straight groove for connecting the rubber shaft is opened at the bottom of the chip cleaning piece 44. The chip cleaning pieces 44 at the bottom of the buffer pressing plate 43 can abut against the surface of the metal plate. The chip cleaning pieces 44 can abut against the surface of the metal plate, and the rubber shaft can rub against the metal plate to clean the metal chips and slag remaining on the surface, reducing the remaining situation.

[0044] As Figure 2 shown, a docking groove 21 is opened on the surface of the limit plate 2. The inside of the docking groove 21 is used to clamp the mold. The position of the docking groove 21 corresponds to the clamping frame 3, and can cooperate with the punching head 11 to punch and process the metal plate.

[0045] As Figure 4 and Figure 5 shown, a plurality of connecting plates 36 are installed on the transmission guide rail 35. The connecting plates 36 are arranged symmetrically in pairs on both sides of the clamping frame 3. A connecting end block 37 is installed on the connecting plate 36. A driving motor is installed inside the connecting end block 37, and a rotating shaft 371 is installed on the output end of the driving motor, which is used to abut against both sides of the metal plate to assist in transmission. During the rotation of the rotating shaft 371, the metal plate clamped between them can be driven to be transmitted and fed by means of friction.

[0046] As Figure 2 and Figure 3 shown, the clamping frame 3 is arranged as a double-layer rectangular frame. The upper rectangular frame is slidably clamped on the lower rectangular frame. A pair of reset belts 31 are installed on the side wall of the clamping frame 3. Both ends of the reset belt 31 are respectively clamped on the two rectangular frames on both sides for transmission reset;

[0047] A push plate 33 is movably clamped on the limit plate 2. An adjustable feed plate 34 is installed between the push plate 33 and the upper rectangular frame to control the moving distance of the upper rectangular frame. When punching is required, the punching head 11 feeds downward, capable of punching the surface of the metal plate. After punching on one side is completed, the operator can push the push plate 33 to move, making one end of it abut against the surface of the lower rectangular frame of the clamping frame 3, enabling the punching head 11 to perform parallel punching on the surface of the plate. There is no need for re-clamping and feeding, and it can also reduce problems with the quality of secondary punching caused by the deformation of the punched metal plate itself. Moreover, the length of the feed plate 34 can be adjusted and limited according to the actual situation, suitable for punching and processing metal plates of various sizes, with good applicability.

[0048] Working principle: First, when punching and processing a metal plate is required, it can be clamped on the top of the clamping frame 3. As the rotating shaft 371 abuts against its edge, it can drive the metal plate to be transported. And in cooperation with the buffer pressing plate 43 on the guiding frame 4, it can pre-clean the surface of the metal plate, reducing the situation of residual debris and slag. And during the stamping process, it can push the upper rectangular frame of the clamping frame 3 to move with the help of the push plate 33, capable of performing parallel stamping on the remaining positions of a wider metal plate. After the punched metal plate moves between the cleaning frames 5, it can perform friction treatment on the surface of the metal plate with the help of the clamping shaft 55, reducing the remaining burrs, facilitating subsequent unified recycling treatment. When transporting the metal plate, the metal plate can be clamped between the transport guide rails 35. In cooperation with the rotation of the rotating shaft 371, it can drive the metal plate to be fed during transportation. And during the transportation process, the chip cleaning piece 44 at the bottom of the buffer pressing plate 43 can abut against the surface of the metal plate. The chip cleaning piece 44 can abut against the surface of the metal plate, and the rubber shaft can rub against the metal plate to clean the remaining metal chips and slag on the surface, reducing the remaining situation.

[0049] Then, when punching is required next, the punching head 11 feeds downward, capable of punching the surface of the metal plate. After punching on one side is completed, the operator can push the push plate 33 to move, making one end of it abut against the surface of the lower rectangular frame of the clamping frame 3, enabling the punching head 11 to perform parallel punching on the surface of the plate. There is no need for re-clamping and feeding, and it can also reduce problems with the quality of secondary punching caused by the deformation of the punched metal plate itself. Moreover, the length of the feed plate 34 can be adjusted and limited according to the actual situation, suitable for punching and processing metal plates of various sizes.

[0050] Finally, the position of the hollow shaft 52 can be adjusted according to the actual situation, so that its middle section is flush with the metal plate, and the limit catch 521 can be removed. The transmission shaft 53 can approach under the action of the compression shaft 531 and can abut against the surface of the plate during transmission. As the plate moves along with the rotating shaft 371, the friction plate on the surface of the clamping shaft 55 can polish the surface of the metal plate, reducing the residual burrs. During the transmission process, the elastic piece outside the transmission wheel 57 can move in a circular motion under the action of the rubber shaft, scraping the surface of the metal plate and discharging the debris generated by polishing. As the push plate 33 drives the metal plate to move longitudinally, the continuous friction between the clamping shaft 55 and the metal plate can be achieved, and the metal plate can be friction-treated from two directions, further reducing the residual burrs. During the longitudinal movement, the clamping shaft 55 can also be inclined and offset under the elastic action of the reset lever 54, quickly discharging the debris remaining on the surface of the polishing piece.

[0051] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A continuous punching and feeding device for metal sheets, characterized in that: Including, A punching machine main body (1) with a punching head (11) installed at its top end. A limit plate (2) is installed on the punching machine main body (1), and the position of the limit plate (2) corresponds to that of the punching head (11); A clamping frame (3) is arranged on the top of the limit plate (2). A pair of transmission guide rails (35) are installed on the clamping frame (3), and a guide frame (4) and a cleaning frame (5) are respectively installed at both ends of the pair of transmission guide rails (35); Among them, the guide frame (4) is used for pre-cleaning the transmission of the metal plate. A pair of transmission shafts (53) are provided on the cleaning frame (5), and a plurality of reset pressure rods (54) are provided on the transmission shafts (53). One end of a single group of the reset pressure rods (54) is installed with a clamping shaft (55), and the pair of clamping shafts (55) are used to abut against both sides of the metal plate after punching for assisting in burr cleaning.

2. The continuous punching and feeding device for metal sheets according to claim 1, wherein: The cleaning frame (5) is clamped on one side of the bottom of the clamping frame (3). Positioning shafts (51) are installed on the side walls of the cleaning frame (5), and hollow shafts (52) are slidably arranged on the inner walls of the positioning shafts (51); A sliding groove for the movement of the transmission shaft (53) is opened on one side of the hollow shaft (52). Compression shafts (531) are installed at both ends of the transmission shaft (53). A limit clamping block (521) is clamped on the outer wall of one side of the hollow shaft (52), and the limit clamping block (521) is used for limiting the transmission shaft (53).

3. The metal sheet continuous punching and feeding device according to claim 1, characterized in that: The reset pressure rod (54) is bent, and the end of the reset pressure rod (54) connected to the clamping shaft (55) has elasticity. The reset pressure rods (54) on the two sides of the transmission shaft (53) are arranged staggeredly. A plurality of clamping grooves are opened on the clamping shaft (55), and a plurality of grinding shafts are arranged inside the clamping grooves for cleaning the burrs on the surface of the metal plate after punching.

4. The metal sheet continuous punching and feeding device according to claim 1, wherein: Support rods (56) are installed between the reset pressure rods (54). Transmission wheels (57) are rotatably arranged on the support rods (56). A plurality of elastic pieces are arranged on the surface of the transmission wheels (57), and rubber shafts are arranged at the edges of the elastic pieces. The transmission wheels (57) can be located on both sides of the metal plate and rotate by means of the friction between the rubber shafts and the metal plate for assisting in cleaning debris.

5. The metal sheet continuous punching and feeding device according to claim 1, wherein: The guide frame (4) is composed of a pair of horizontal plates. The guide frame (4) is installed at the bottom of the transmission guide rail (35). Connecting shafts are installed on both sides of the guide frame (4), and a transmission frame (41) is movably clamped on the connecting shafts. A positioning plug board (42) is installed on the top of the transmission frame (41), and a buffer pressing plate (43) is installed between the positioning plug boards (42). The buffer pressing plate (43) abuts against the punching surface of the metal plate for assisting in cleaning.

6. The metal sheet continuous punching and feeding device according to claim 5, wherein: A plurality of chip cleaning pieces (44) are installed at the bottom of the buffer pressing plate (43). An inclination angle is provided between the chip cleaning pieces (44) and the bottom of the buffer pressing plate (43). Straight grooves for connecting rubber shafts are opened at the bottoms of the chip cleaning pieces (44).

7. The metal sheet continuous punching and feeding device according to claim 1, characterized in that: Docking grooves (21) are opened on the surface of the limit plate (2), and the inside of the docking grooves (21) is used for clamping the mold. The position of the docking grooves (21) corresponds to that of the clamping frame (3).

8. The metal sheet continuous punching and feeding device according to claim 1, characterized in that: A plurality of connecting plates (36) are installed on the transmission guide rail (35). The connecting plates (36) are symmetrically arranged in pairs on both sides of the clamping frame (3). A connecting end block (37) is installed on the connecting plate (36). A driving motor is installed inside the connecting end block (37), and a rotating shaft (371) is installed on the output end of the driving motor, which is used to abut against both sides of the metal plate to assist in transmission.

9. The metal sheet continuous punching and feeding device according to claim 1, characterized in that: The clamping frame (3) is arranged as a double-layer rectangular frame. The upper rectangular frame is slidably clamped on the lower rectangular frame. A pair of reset belts (31) are installed on the side wall of the clamping frame (3). Both ends of the reset belt (31) are respectively clamped on the two rectangular frames for transmission reset. A push plate (33) is movably clamped on the limiting plate (2). An adjustable feed plate (34) is installed between the push plate (33) and the upper rectangular frame, which is used to control the moving distance of the upper rectangular frame.

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