A hardware sheet punching equipment

Abstract

The cam is secured to a position adjacent to the first and second plates, and the cam is secured to a position adjacent to the second plates, with the cam being secured to the first and second plates.

Description

Technical Field

[0001] The invention relates to the technical field of thin plate punching, in particular to hardware thin plate punching equipment. Background Art

[0002] Punching refers to a method of slotting or opening holes in spare parts. It refers to opening eight-shaped holes, hexagonal holes, long holes, square holes, round holes and triangular holes on spare parts according to different usage requirements. Compared with pipe punching, although plate punching has many similarities in deformation properties and deformation characteristics, the plate is flat, so the punching process of the plate is simpler and more convenient. Therefore, there is no need to take special process measures and mold structure. However, for thin plates, the plates need to be protected from damage during the punching process. Therefore, the punching of thin plates needs to be processed with caution.

[0003] Existing hardware thin plate punching equipment can only perform single movement adjustment in the horizontal and vertical directions, resulting in processing dead angles during the punching process. The overall flexibility of the punching drill is poor, and the plate cannot be suspended, adsorbed, positioned and clamped, which easily scratches the surface of the plate. Local cracks or wear will occur during the punching process. It is impossible to ensure that the plate is firmly clamped and the equipment can provide shock-absorbing protection for the surface of the plate. When punching thin plates, the impact force cannot be effectively and quickly transmitted and offset, and it is impossible to avoid local overload and breakage of the plate. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a hardware thin plate punching equipment, which solves the problem that the existing hardware thin plate punching equipment can only perform a single movement adjustment along the horizontal and vertical directions, resulting in processing dead angles in the punching process, the overall flexibility of the punching drill is poor, and the plate cannot be suspended, adsorbed, positioned and clamped, which easily scratches the surface of the plate. Local cracks or wear will occur during the punching process, and it is impossible to ensure that the plate is firmly clamped while realizing the shock-absorbing protection of the equipment on the surface of the plate. When punching thinner plates, the impact force cannot be effectively and quickly transmitted and offset, and the problem of local overload and breakage of the plate cannot be avoided.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a hardware sheet punching device comprises a base, an upper surface of the base is installed with a first ring frame near the front side, a rear end of the first ring frame is installed with a second ring frame, an upper surface of the base is installed with a telescopic rod near the rear side, an upper end of the telescopic rod is installed with a front clamping piece, a rear end of the front clamping piece is installed, a plate is installed at the rear end of the plate, a telescopic rod second is installed, and a rear clamping piece is installed on the upper end of the telescopic rod second, a positioning rod is installed through the inner sides of the first ring frame and the second ring frame, a punching machine is installed on the rear end surface of the positioning rod, a hydraulic rod is installed at the middle position of the rear end surface of the punching machine, a docking ring is sleeved on the rear end of the hydraulic rod, a punching drill is docked with the rear end surface of the hydraulic rod through the docking ring, and a positioning nut is installed on the surface bolt of the positioning rod;

[0006] The first ring frame includes an external ring frame, wherein a ring groove is provided in the middle of the inner wall surface of the external ring frame, a first plate is installed on the lower left side of the ring groove, and a second plate is installed on the upper right side of the ring groove;

[0007] The front clamping member includes a No. 1 plywood, a No. 2 plywood is installed at the lower end of the No. 1 plywood, a No. 3 plywood is installed at the upper end of the No. 2 plywood, and a rope is passed through and connected between the No. 1 plywood, the No. 2 plywood and the No. 3 plywood.

[0008] Preferably, a locking ball is installed between the first plate and the second plate and on both the left and right sides, the external ring frame is installed in combination with the base, the second ring frame has the same structure as the first ring frame, the first plate has the same structure as the second plate, and the two are arranged in a central symmetrical manner about the center of the external ring frame.

[0009] Preferably, the first plate includes a guide plate, a guide groove is provided in the middle position of the upper end surface of the guide plate, a clamping rod is fixedly connected to the middle position of the lower end surface of the guide plate, an isolation block is fixedly connected to the middle of the surface of the clamping rod, and the guide plate is slidably installed with the external ring frame through the cooperation of the clamping rod and the ring groove.

[0010] Preferably, the upper and lower sides of the locking ball are symmetrically provided with bayonet holes, and the locking ball is slidably installed with the guide plate through the cooperation of the bayonet hole and the guide groove, and the guide plate and the second plate are jointly installed with the external ring frame through the cooperation of the locking ball and the locking rod, and an inner slide rail is formed between the first plate and the second plate, and an outer slide rail is formed between the first plate and the second plate and the external ring frame. The inner slide rail and the outer slide rail can be effectively connected by sliding the two locking balls to the same place through the guide groove, so that the positioning rod can also be slid and adjusted in the track provided by the inner slide rail.

[0011] Preferably, a buckle is installed on the surface of the rope, a positioning suction rod is installed on the outer end of the No. 1 plywood, a rubber pad is provided on the side surface of the No. 1 plywood close to the plate, and the structures of the No. 2 plywood, the No. 3 plywood and the No. 1 plywood are the same.

[0012] Preferably, the No. 1 splint comprises an arc-shaped plate, a slot is provided at the middle position inside the arc-shaped plate, a guide block is installed on the inner side of the slot, and a semi-ring plate is fixedly connected to the lower end of the arc-shaped plate.

[0013] Preferably, the upper end of the semi-ring plate is fixedly connected to a head ring, a ball groove is opened through the middle position of the front end surface of the head ring, the guide block is installed by engaging with the arc plate through the slot, and the rope is installed by inserting the guide block and the arc plate.

[0014] Preferably, the positioning suction rod includes a screw, a cross rod is fixedly connected to the middle of the rear end surface of the screw, a suction cup is installed on the inner side of the ball groove, and an assembly ring is fixedly connected to the surface of the suction cup near the rear end. The screw is rotatably installed with the suction cup through the ball groove and the assembly ring. The screw pushes the suction cup to slowly move out of the ball groove and squeeze toward the surface of the plate. The suction cups on the No. 2 plywood and the No. 3 plywood jointly extrude and adsorb the surface of the plate, thereby realizing three-point positioning of the front clamp on the front end surface of the plate.

[0015] Preferably, the screw is installed with the head ring thread through the ball groove, and the arc plate is installed to be lifted and lowered with the base through the screw at the rear end of the head ring in cooperation with the telescopic rod. The arc plate is installed to be rotated with the telescopic rod through the head ring and the screw, and the clamping angles of the front clamping part and the rear clamping part on the plate surface can be deflected and adjusted according to the different positions of the punching process on the plate surface.

[0016] Preferably, the positioning rod is movably installed with the external ring frame through the cooperation of the positioning nut and the outer slide rail, the punching machine is rotatably installed with the base through the cooperation of the first ring frame, the second ring frame and the positioning rod, the punching drill bit is installed with the hydraulic rod bolt through the docking ring, the punching drill bit is telescopically installed with the hydraulic rod, and the hydraulic rod is rotatably installed with the punching machine, so that the punching drill bit can punch holes of different depths on the plate through the hydraulic rod.

[0017] The present invention provides a metal sheet punching device having the following beneficial effects:

[0018] 1. The hardware sheet punching equipment links the first plate and the second plate by the card ball, and effectively utilizes the card rod corresponding to the ring groove on the inner side of the external ring frame to limit the first plate and the second plate together, so that the first plate and the second plate can be fixedly assembled on the inner side of the external ring frame, so that the first plate and the second plate can be rotated and adjusted around the center of the external ring frame by relying on the limiting guidance of the two card rods, and then the card holes provided on both sides of the card ball are respectively engaged with the guide grooves provided on the first plate and the second plate. Under the effective limitation of the outer movable range of the first plate and the second plate by the external ring frame, the two card balls can only slide on the track where the guide groove is located, thereby realizing the connection and closure between the inner slide rail and the outer slide rail, thereby facilitating the sliding and position change of the positioning rod between the inner slide rail and the outer slide rail.

[0019] 2. The hardware sheet metal punching equipment, through the positioning rod and the bolt positioning cooperation of the positioning nut, makes the positioning rod slide in the track provided by the outer slide rail, and the two cards are slid to the same place through the guide groove to effectively connect the inner slide rail with the outer slide rail, so that the positioning rod can also slide and adjust in the track provided by the inner slide rail. Through the above operation, the positioning rod can drive the punching machine to move freely within the circular range covered by the inner side of the external ring frame, so as to realize the punching drill bit to punch holes at any position on the plate, change the traditional horizontal moving mechanism and vertical moving mechanism, get rid of the single horizontal and vertical motion trajectory, reduce the dead angle of punching processing, and improve the overall flexibility of the punching drill bit.

[0020] 3. The metal sheet punching equipment uses the screw at the rear end of the head ring to cooperate with the telescopic rod to lift and lower the curved plate and the base, so that the entire front clamping part is suspended and installed on the upper end of the base through the curved plate. The head ring and the screw cooperate to make the curved plate rotate around the upper end of the telescopic rod, so that the overall flexibility of the front clamping part is increased, and the plate can be adsorbed and positioned at any angle. Similarly, the rear clamping part installed at the upper end of the telescopic rod can be used to adsorb and position the plate at any angle. Through the above operations, the front clamping part and the rear clamping part can clamp and position the plate in mid-air, and can also be used for non-suspended clamping and positioning based on the size of the plate and the support of the base on the bottom of the plate.

[0021] 4. The hardware thin plate punching equipment rotates the screw clockwise through the cross rod, utilizes the rotation setting between the screw and the assembly ring, and the threaded installation of the screw through the ball groove and the head ring, so that the screw pushes the suction cup to slowly move out of the ball groove and squeeze toward the surface of the plate, and utilizes the suction cups on the second and third plywood to jointly squeeze and adsorb the surface of the plate, thereby realizing three-point positioning of the front end surface of the plate by the front clamping part, and combining with the rear clamping part installed at the rear end of the plate to realize three-point positioning of the rear end surface of the plate, thereby realizing stable adsorption and clamping of the plate by the equipment, and the rubber pad provided on the side of the arc plate in contact with the plate effectively prevents the surface of the plate from being scratched, and plays a local shock-absorbing role in the punching process of the plate, thereby avoiding local cracks or wear on the surface of the plate caused by the punching process.

[0022] 5. The metal sheet punching equipment uses a guide block to interweave the rope and the curved plate, and can effectively use the rope to assemble the second and third plywoods with the first plywood into the same whole, so that multiple groups of structures identical to the curved plate are located on the same plane, and the second and third plywoods are gathered together with the first plywood on a circular ring with the same center through the buckle, thereby improving the stability of the overall structural components of the front clamping part, effectively increasing the contact area between the front clamping part and the rear clamping part and the plate surface, while minimizing the surface area of the plate blocked during the clamping process. The semi-annular plate provides a position guide for punching while further expanding the effective contact area between the front clamping part and the middle of the plate, thus avoiding local overload and breakage of the plate when punching thin plates. Combined with the close contact between the rubber pad on the curved plate and the surface of the plate, it provides a good conduction and shock absorption effect for the impact force generated by punching, thereby reducing the breakage rate of the plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the external structure of a metal sheet punching device according to the present invention;

[0024] Figure 2 Schematic diagram of the partial assembly structure of the first ring frame and the positioning rod of the present invention;

[0025] Figure 3 This is a schematic diagram of the assembly structure of the first plate and the card ball of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the front clamping member of the present invention;

[0027] Figure 5 This is a schematic structural diagram of the first splint of the present invention;

[0028] Figure 6This is a schematic diagram of the partial assembly structure of the positioning suction rod and head ring of the present invention.

[0029] In the figure: 1, base; 2, first ring frame; 21, external ring frame; 22, ring groove; 23, first plate; 231, guide plate; 232, guide groove; 233, clamping rod; 234, isolation block; 24, second plate; 25, clamping ball; 3, second ring frame; 4, telescopic rod 1; 5, front clamping member; 51, clamping plate 1; 511, curved plate; 512, clamping groove; 513, guide block; 514, semi-ring plate; 515 , head ring; 516, ball groove; 52, No. 2 splint; 53, No. 3 splint; 54, rope; 55, buckle; 56, positioning suction rod; 561, screw; 562, cross rod; 563, suction cup; 564, assembly ring; 57, rubber pad; 6, plate; 7, telescopic rod 2; 8, rear clamping piece; 9, positioning rod; 10, punching machine; 11, hydraulic rod; 12, docking ring; 13, punching drill bit; 14, positioning nut. DETAILED DESCRIPTION

[0030] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described to better illustrate the principles of the invention and its practical application, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for specific applications. Example 1

[0031] like Figures 1-6As shown, the present invention provides a technical solution: comprising a base 1, a first ring frame 2 is installed on the upper end surface of the base 1 near the front side, a second ring frame 3 is installed on the rear end of the first ring frame 2, a telescopic rod 1 4 is installed on the upper end of the base 1 near the rear side, a front clamping member 5 is installed on the upper end of the telescopic rod 1 4, a plate 6 is installed on the rear end of the front clamping member 5, a telescopic rod 2 7 is installed on the rear end of the plate 6, a rear clamping member 8 is installed on the upper end of the telescopic rod 2 7, a positioning rod 9 is installed through the inner sides of the first ring frame 2 and the second ring frame 3, a punching machine 10 is installed on the rear end surface of the positioning rod 9, and a hydraulic rod is installed in the middle position of the rear end surface of the punching machine 10 11, the rear end of the hydraulic rod 11 is sleeved with a docking ring 12, the rear end surface of the hydraulic rod 11 is docked with a punching drill 13 through the docking ring 12, and the surface bolt of the positioning rod 9 is installed with a positioning nut 14; the positioning rod 9 is movably installed with the external ring frame 21 through the positioning nut 14 and the outer slide rail, the punching machine 10 is rotatably installed with the base 1 through the first ring frame 2, the second ring frame 3 and the positioning rod 9, the punching drill 13 is bolted to the hydraulic rod 11 through the docking ring 12, the punching drill 13 is telescopically installed with the hydraulic rod 11, and the hydraulic rod 11 is rotatably installed with the punching machine 10; the first ring frame 2 includes an external ring frame 21, the external ring frame An annular groove 22 is provided in the middle of the inner wall surface of 21, a first plate 23 is installed on the lower left side of the annular groove 22, and a second plate 24 is installed on the upper right side of the annular groove 22; a card ball 25 is installed between the first plate 23 and the second plate 24 and on both the left and right sides, the external ring frame 21 is assembled with the base 1, the second ring frame 3 has the same structure as the first ring frame 2, the first plate 23 has the same structure as the second plate 24, and the two are centrally symmetrically arranged about the center of the external ring frame 21; the first plate 23 includes a guide plate 231, a guide groove 232 is provided in the middle of the upper end surface of the guide plate 231, and the lower end of the guide plate 231 is provided with a card ball 25. A clamping rod 233 is fixedly connected to the middle position of the end surface, and an isolation block 234 is fixedly connected to the middle of the surface of the clamping rod 233. The guide plate 231 is slidably installed with the external ring frame 21 through the clamping rod 233 and the ring groove 22; the upper and lower sides of the clamping ball 25 are symmetrically provided with clamping slots, and the clamping ball 25 is slidably installed with the guide plate 231 through the clamping slots and the guide groove 232. The guide plate 231 and the second plate 24 are combined and installed with the external ring frame 21 through the clamping ball 25 and the clamping rod 233. An inner slide rail is formed between the first plate 23 and the second plate 24, and an outer slide rail is formed between the first plate 23, the second plate 24 and the external ring frame 21.

[0032] When in use, the first plate 23 and the second plate 24 are connected by the card ball 25, and the card rod 233 is effectively used to limit the locking of the ring groove 22 on the inner side of the external ring frame 21, so that the first plate 23 and the second plate 24 are jointly locked and assembled on the inner side of the external ring frame 21, so that the first plate 23 and the second plate 24 can be rotated and adjusted around the center of the external ring frame 21 by the limiting guidance of the two card rods 233. Then, the card holes provided on both sides of the card ball 25 respectively engage with the guide grooves 232 opened on the first plate 23 and the second plate 24. Under the effective limitation of the outer movable range of the first plate 23 and the second plate 24 by the external ring frame 21, the two card balls 25 can only slide on the track where the guide grooves 232 are located, thereby realizing the connection and closing between the inner slide rail and the outer slide rail, thereby facilitating the sliding and position change of the positioning rod 9 between the inner slide rail and the outer slide rail.

[0033] With the positioning rod 9 and the bolt positioning cooperation of the positioning nut 14, the positioning rod 9 slides in the track provided by the outer slide rail, and the two blocking balls 25 are slid to the same place through the guide groove 232, which can effectively connect the inner slide rail with the outer slide rail, so that the positioning rod 9 can also slide and adjust in the track provided by the inner slide rail. Through the above operation, the positioning rod 9 can drive the punching machine 10 to move freely within the circular range covered by the inner side of the external ring frame 21, so as to realize the punching drill bit 13 on any position of the plate 6, change the traditional horizontal moving mechanism and vertical moving mechanism, get rid of the single horizontal and vertical motion trajectory, reduce the dead angle of punching processing, and improve the overall flexibility of the punching drill bit 13. Example 2

[0034] like Figure 4-Figure 6As shown, the front clamping member 5 includes a No. 1 splint 51, a No. 2 splint 52 is installed at the lower end of the No. 1 splint 51, and a No. 3 splint 53 is installed at the upper end of the No. 2 splint 52. A rope 54 is passed through the No. 1 splint 51, the No. 2 splint 52 and the No. 3 splint 53; a buckle 55 is installed on the surface of the rope 54, a positioning suction rod 56 is installed at the outer end of the No. 1 splint 51, and a rubber pad 57 is provided on the surface of the side of the No. 1 splint 51 close to the plate 6. The No. 2 splint 52, the No. 3 splint 53 and the No. 1 splint 51 have the same structure; the No. 1 splint 51 includes an arc-shaped plate 511, a card slot 512 is opened at the middle position of the inner part of the arc-shaped plate 511, a guide block 513 is installed on the inner side of the card slot 512, and the lower end of the arc-shaped plate 511 is fixedly connected to a semi-ring plate 514; the upper end of the semi-ring plate 514 is fixedly connected to a head ring 515, and the head ring 51 5, a ball groove 516 is provided through the middle position of the front end surface of the guide block 513, the guide block 513 is engaged with the arc plate 511 through the card groove 512, and the rope 54 is installed through the guide block 513 and the arc plate 511; the positioning suction rod 56 includes a screw rod 561, a cross rod 562 is fixedly connected to the middle of the rear end surface of the screw rod 561, a suction cup 563 is installed on the inner side of the ball groove 516, and an assembly ring 564 is fixedly connected to the surface of the suction cup 563 near the rear end, and the screw rod 561 is rotatably installed with the suction cup 563 through the ball groove 516 and the assembly ring 564; the screw rod 561 is threadedly installed with the head ring 515 through the ball groove 516, and the arc plate 511 is lifted and lowered with the base 1 through the screw 561 at the rear end of the head ring 515 in cooperation with the telescopic rod 4, and the arc plate 511 is rotatably installed with the telescopic rod 4 through the head ring 515 and the screw 561.

[0035] When in use, the curved plate 511 and the base 1 are lifted and installed through the screw 561 at the rear end of the head ring 515 in conjunction with the telescopic rod 14, so that the entire front clamping member 5 is suspended and installed on the upper end of the base 1 through the curved plate 511. The head ring 515 and the screw 561 cooperate to make the curved plate 511 rotate around the upper end of the telescopic rod 14, so that the overall flexibility of the front clamping member 5 is increased, and the plate 6 can be adsorbed and positioned at any angle. Similarly, the rear clamping member 8 installed at the upper end of the telescopic rod 27 can be adsorbed and positioned at any angle. Through the above operation, the front clamping member 5 and the rear clamping member 8 can clamp the plate 6 in a suspended position, and can also be combined with the size of the plate 6 and the support of the base 1 on the bottom of the plate 6 to perform non-suspended clamping positioning;

[0036] By rotating the screw 561 clockwise by the cross rod 562, the rotation setting between the screw 561 and the assembly ring 564, and the threaded installation of the screw 561 through the ball groove 516 and the head ring 515, the screw 561 pushes the suction cup 563 to slowly move out of the ball groove 516 and squeeze it toward the surface of the plate 6, and the suction cups 563 on the second clamping plate 52 and the third clamping plate 53 are used to jointly squeeze and adsorb the surface of the plate 6, so as to achieve three-point positioning of the front end surface of the plate 6 by the front clamping member 5, and the three-point positioning of the rear end surface of the plate 6 by the rear clamping member 8 installed at the rear end of the plate 6, thereby achieving stable adsorption and clamping of the plate 6 by the equipment, and the rubber pad 57 provided on the side of the curved plate 511 in contact with the plate 6 effectively prevents the surface of the plate 6 from being scratched, and plays a local shock absorbing role during the punching process of the plate 6, thereby avoiding local cracks or wear caused by the punching process on the surface of the plate 6;

[0037] The rope 54 and the curved plate 511 are inserted and installed through the guide block 513, and the rope 54 can be effectively used to assemble the second and third splints 52 and the first splint 51 into the same whole, so that multiple groups of structures identical to the curved plate 511 are located on the same plane, and the second and third splints 52 and the first splint 51 are gathered together on a circular ring with the same center through the buckle 55, thereby improving the stability of the overall structural components of the front clamping member 5, effectively increasing the contact area between the front clamping member 5 and the rear clamping member 8 and the plate 6, and minimizing the obstruction of the plate 6 during the clamping process. area, which facilitates the convenient processing of arbitrary displacement of the plate 6 by the equipment, reduces the number of adjustments to the clamping position of the plate 6, improves the punching processing efficiency, and saves processing time; wherein, while providing position guidance for punching through the semi-annular plate 514, the effective contact area between the front clamping member 5 and the middle of the plate 6 is further expanded, avoiding the local overload and breakage of the plate 6 when punching the thinner plate 6, combined with the close contact between the rubber pad 57 on the arc plate 511 and the surface of the plate 6, provides a good conduction and shock absorption effect for the impact force generated by the punching, and reduces the breakage rate of the plate 6.

[0038] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making creative efforts should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention shall be implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. A metal sheet punching device, comprising a base (1), characterized in that: A first ring frame (2) is mounted on the upper end surface of the base (1) near the front side, a second ring frame (3) is mounted on the rear end of the first ring frame (2), a telescopic rod (4) is mounted on the upper end surface of the base (1) near the rear side, a front clamping member (5) is mounted on the upper end of the telescopic rod (4), a plate (6) is mounted on the rear end of the front clamping member (5), a telescopic rod (7) is mounted on the rear end of the plate (6), a rear clamping member (8) is mounted on the upper end of the telescopic rod (7), and the first A positioning rod (9) is installed through the inner sides of the ring frame (2) and the second ring frame (3), a punching machine (10) is installed on the rear end surface of the positioning rod (9), a hydraulic rod (11) is installed at the middle position of the rear end surface of the punching machine (10), a docking ring (12) is installed on the rear end of the hydraulic rod (11), a punching drill bit (13) is docked and installed on the rear end surface of the hydraulic rod (11) through the docking ring (12), and a positioning nut (14) is installed on the surface bolt of the positioning rod (9); The first ring frame (2) includes an external ring frame (21), an annular groove (22) is provided at a middle position of an inner wall surface of the external ring frame (21), a first plate (23) is installed on the lower left side of the annular groove (22), and a second plate (24) is installed on the upper right side of the annular groove (22); a card ball (25) is installed between the first plate (23) and the second plate (24) and on both the left and right sides; the external ring frame (21) is assembled with the base (1), the second ring frame (3) has the same structure as the first ring frame (2), the first plate (23) has the same structure as the second plate (24), and the two are centrally symmetrically arranged about the center of the external ring frame (21); The front clamping member (5) includes a No. 1 clamping plate (51), a No. 2 clamping plate (52) is installed at the lower end of the No. 1 clamping plate (51), and a No. 3 clamping plate (53) is installed at the upper end of the No. 2 clamping plate (52). A rope (54) is connected through the No. 1 clamping plate (511), the No. 2 clamping plate (52) and the No. 3 clamping plate (53). The No. 1 clamping plate (511) includes a curved plate (511), a slot (512) is provided at the middle position inside the curved plate (511), a guide block (513) is installed on the inner side of the slot (512), and a semi-ring plate (514) is fixedly connected to the lower end of the curved plate (511).

2. The metal sheet punching device according to claim 1, characterized in that: The first plate (23) comprises a guide plate (231), a guide groove (232) is provided at a middle position of an upper end surface of the guide plate (231), a clamping rod (233) is fixedly connected to a middle position of a lower end surface of the guide plate (231), an isolation block (234) is fixedly connected to a middle portion of a surface of the clamping rod (233), and the guide plate (231) is slidably mounted on the external ring frame (21) through the clamping rod (233) and the ring groove (22).

3. The metal sheet punching device according to claim 2, characterized in that: The upper and lower sides of the clamping ball (25) are symmetrically provided with clamping slots. The clamping ball (25) is slidably mounted on the guide plate (231) by cooperating with the clamping slot and the guide groove (232). The guide plate (231) and the second plate (24) are assembled and mounted on the external ring frame (21) by cooperating with the clamping ball (25) and the clamping rod (233). An inner slide rail is formed between the first plate (23) and the second plate (24), and an outer slide rail is formed between the first plate (23), the second plate (24) and the external ring frame (21).

4. The metal sheet punching device according to claim 3, characterized in that: A buckle (55) is installed on the surface of the rope (54), a positioning suction rod (56) is installed on the outer end of the No. 1 splint (51), and a rubber pad (57) is provided on the surface of the No. 1 splint (51) close to the plate (6). The No. 2 splint (52), the No. 3 splint (53) and the No. 1 splint (51) have the same structure.

5. The metal sheet punching device according to claim 4, characterized in that: The upper end of the semi-ring plate (514) is fixedly connected to a head ring (515), and a ball groove (516) is provided through the middle position of the front end surface of the head ring (515). The guide block (513) is mounted by being engaged with the arc plate (511) through the slot (512), and the rope (54) is mounted by being inserted through the guide block (513) and the arc plate (511).

6. The metal sheet punching device according to claim 5, characterized in that: The positioning suction rod (56) comprises a screw rod (561), a cross rod (562) is fixedly connected to the middle of the rear end surface of the screw rod (561), a suction cup (563) is installed on the inner side of the ball groove (516), and an assembly ring (564) is fixedly connected to the surface of the suction cup (563) near the rear end. The screw rod (561) is rotatably mounted with the suction cup (563) through the ball groove (516) and the assembly ring (564).

7. The metal sheet punching equipment according to claim 6, characterized in that: The screw rod (561) is threadedly mounted on the head ring (515) through the ball groove (516); the arc plate (511) is lifted and mounted on the base (1) in cooperation with the telescopic rod (4) through the screw rod (561) at the rear end of the head ring (515); and the arc plate (511) is rotationally mounted on the telescopic rod (4) through the head ring (515) and the screw rod (561).

8. The metal sheet punching device according to claim 7, characterized in that: The positioning rod (9) is movably mounted on the external ring frame (21) by cooperating with the positioning nut (14) and the external slide rail; the punching machine (10) is rotatably mounted on the base (1) by cooperating with the first ring frame (2), the second ring frame (3) and the positioning rod (9); the punching drill bit (13) is bolted to the hydraulic rod (11) through the docking ring (12); the punching drill bit (13) is telescopically mounted on the hydraulic rod (11); and the hydraulic rod (11) is rotatably mounted on the punching machine (10).

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