Automatic trepanning vehicle
By designing the clamping and feeding device and chuck assembly of the automatic hole-forming machine, automated hole-forming was achieved, solving the problems of low efficiency and danger of manual feeding in the existing technology, improving work efficiency and reducing labor costs.
Patent Information
- Application Number
- CN202423291137.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-31
Smart Images
Figure CN223617310U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cutting tool assembly technology, specifically to an automatic hole-punching machine. Background Technology
[0002] Currently, the drilling of neodymium iron boron, semiconductor materials, glass, etc. is mainly done by instrument lathes.
[0003] However, most existing material feeding devices are manual, which is inefficient and dangerous. Utility Model Content
[0004] Technical problems to be solved
[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an automatic hole-punching machine, which can effectively solve the problem that most of the hole-punching feeding devices in the existing technology are manual, with low working efficiency and relatively dangerous conditions.
[0006] Technical solution
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] This utility model provides an automatic punching machine, including a worktable. The worktable is equipped with a clamping and feeding device. A chuck assembly and a cutter assembly are respectively arranged on the worktable on both sides of the clamping and feeding device. A truss structure is arranged on one side of the clamping and feeding device. The truss structure includes a truss body and a transverse moving assembly arranged on the truss body. The clamping and feeding device includes a base frame fixed to the worktable and a pusher pneumatic rod fixed to the top of the base frame. The pusher pneumatic rod is used to push the material on the clamp into the feeding mechanism. The transverse moving assembly is connected to a fixed plate. A lifting mechanism is arranged on the fixed plate. The lifting end of the lifting mechanism is connected to the lifting plate, and the feeding mechanism is arranged on the lifting plate.
[0009] Furthermore, the feeding mechanism includes a feeding cylinder and a rotary cylinder. The output end of the rotary cylinder is connected to a feeding rod, which has a material trough for accommodating materials. The output end of the feeding cylinder is connected to a push rod, which pushes the material in the trough onto the clamping assembly for clamping. A material clamp is provided on the base frame, positioned between the push rod and the feeding rod. This configuration results in a simple overall structure and low manufacturing cost for the feeding mechanism. The material clamp also allows for connection to a vibratory feeder, enabling automatic material feeding and further improving the automation level of the equipment. One worker can manage 8-14 machines, further reducing labor costs.
[0010] Furthermore, the chuck assembly includes a clamping cylinder, a positioning plate fixed to the worktable, an outer cylinder disposed on the positioning plate, and a limiting tube rotatably disposed within the outer cylinder, with a pull rod disposed within the limiting tube; the chuck assembly also includes a chuck for clamping the workpiece, at least a portion of which is located within the limiting tube, the chuck being connected to one end of the pull rod, and the other end of the pull rod being connected to the clamping cylinder; the chuck assembly also includes an ejection mechanism for ejecting material from the chuck. Thus, the overall structure of the chuck assembly is simple, without irregularly shaped parts, easy to process and form, and easy to assemble, thereby reducing production costs.
[0011] Furthermore, the ejection mechanism includes an ejection cylinder and an ejector rod, with the ejector rod at least partially located within a pull rod; the ejection cylinder is connected to the worktable via a bracket, and the piston rod of the ejection cylinder is connected to the ejector rod. Thus, the overall structure of the ejection mechanism is simple, without irregularly shaped parts, easy to process and form, and convenient to assemble, thereby reducing production costs.
[0012] Furthermore, a pulley is fixedly connected to the limiting tube located on the outer side of the outer cylinder, and a motor is installed below the worktable, with the motor and pulley connected for transmission. The clamping cylinder is fixedly connected to the positioning plate and is located above the outer cylinder. The piston rod of the clamping cylinder is connected to the pull rod through a actuating mechanism, used to push and pull the pull rod to move axially. The chuck and the limiting tube mutually limit each other circumferentially. During use, the pulley drives the limiting tube to rotate, the limiting tube drives the chuck to rotate, and the movement of the pull rod can realize the clamping and releasing of the chuck.
[0013] Furthermore, the push rod has a Z-shaped structure, and its bottom end is at the same height as the middle of the material; the material trough has a C-shaped cross-section, and the opening of the C-shaped structure is at the same height as the bottom end of the push rod. This arrangement ensures that the feeding cylinder is positioned far from the feeding rod, resulting in a relatively small overall structure, a smaller gap between the chuck and the cutter, and thus improved equipment efficiency.
[0014] Furthermore, the tail end of the clamp is inclined to the outer top, and the output end of the push rod penetrates the side wall of the clamp.
[0015] Furthermore, the positioning plate in the chuck assembly is provided with multiple sets of outer cylinders, and the number and position of the tool assemblies are adapted to the outer cylinders. This configuration allows for the simultaneous processing of multiple blanks, improving processing efficiency and reducing processing costs.
[0016] Furthermore, the actuating mechanism includes a swing ring, a sliding sleeve, a swing rod, and a swing base. The sliding sleeve is slidably connected to the limiting tube. A bearing is provided between the swing ring and the sliding sleeve. The inner ring of the bearing is connected to the sliding sleeve, and the outer ring of the bearing is connected to the swing ring via a rotating pin. The upper side of the swing ring is connected to the piston rod of the clamping cylinder, and the lower side of the swing ring is hinged to the worktable. The swing base is fixedly connected to the pull rod. One end of the swing rod is rotatably connected to the swing base, and the other end of the swing rod is located between the sliding sleeve and the swing base. The sliding sleeve has an inclined surface near the swing rod to control the swing of the swing rod. One end of the swing rod has a protrusion that cooperates with the limiting tube to pull the pull rod after the swing rod rotates. With this configuration, even if the limiting tube rotates during use, the swing ring remains stationary, thus allowing the clamping cylinder to remain stationary. This simplifies the connection structure of the clamping cylinder, reduces the manufacturing difficulty of the equipment, and consequently reduces the manufacturing cost.
[0017] Furthermore, the center of gravity of the pendulum is located between the connection point of the pendulum and the pendulum base and the other end of the pendulum; the limiting tube is provided with a limiting seat, and the limiting seat has an opening slot corresponding to the pendulum. With this configuration, the pendulum does not need a return spring and can return to its original position under its own weight, reducing the number of parts, simplifying the structure, and lowering the manufacturing cost; while the opening slots can ensure the position of the pendulum, preventing pendulum deviation that could lead to delayed pendulum movement or jamming, thereby ensuring stability and reliability in use.
[0018] Beneficial effects:
[0019] The technical solution provided by this utility model has the following advantages compared with the prior art:
[0020] This utility model utilizes a clamping and feeding device—a truss structure. The truss's transverse component carries a rotating cylinder, a feeding cylinder, a fixed plate, and a lifting mechanism, moving along the truss body. Workers simply place the material into the clamp or a vibratory feeder connected to the clamp. The pushing cylinder then pushes the material from the clamp into the feeding rod. Because the feeding rod has a groove for accommodating the material, it can be pushed into the feeding rod and limited by the feeding push rod. The feeding push rod can move inward / outward via the feeding cylinder to prevent the material from slipping out from the other end of the feeding hole. Meanwhile, the feeding rod can be rotated 180 degrees via the rotating cylinder. After the groove of the feeding rod is rotated, the feeding cylinder operates, allowing the material to... The feeding pusher pushes one end of the material into the chuck, and then the chuck assembly clamps the material. After the feeding rod rises, the cutting tool assembly can process the material. Usually, when the cutting tool assembly drills, the depth of the first hole is greater than 1 / 2 of the material length but less than the material length. After the first hole is drilled, the traverse assembly moves the feeding rod to the chuck position, then the chuck is released, and the push rod pushes the material in the chuck into the slot. Then the feeding rod rotates the material 180 degrees, and the feeding pusher pushes the material in the slot back into the chuck, which clamps the material again. Then the second hole is drilled, and the depth of the second hole is 1 / 2 of the material length. After completion, the chuck is released, and the push rod pushes the processed material out. The whole process is highly automated. Therefore, compared with the existing structure, this device can achieve rapid automatic hole punching, reduce the labor intensity of workers, and one worker can handle 4 to 14 machines (when manually feeding with material clamps, it is usually 4-8 machines, while when using vibratory feeder, it can reach 8-14 machines, and if the vibratory feeder is larger, it can handle more machines), resulting in lower labor costs. It can also be applied to assembly line production, which can further improve work efficiency. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the structure of this utility model;
[0023] Figure 2 This is one of the structural schematic diagrams of the clamping and feeding device and truss structure of this utility model;
[0024] Figure 3 This is the second schematic diagram of the clamping and feeding device and the truss structure in this utility model;
[0025] Figure 4 This is a schematic diagram of the clamping and feeding device in this utility model;
[0026] Figure 5 This is an exploded view of the chuck assembly in this utility model;
[0027] Figure 6 This is a cross-sectional view of the clamp assembly in this utility model;
[0028] Figure 7 This is a perspective view of the clamp assembly in this utility model;
[0029] Figure 8 This is a schematic diagram of the swing arm in this utility model.
[0030] The labels in the diagram represent: 1. Workbench; 2. Chuck assembly; 21. Positioning plate; 22. Ejector cylinder; 23. Tie rod; 24. Pulley; 25. Limiting tube; 26. Outer cylinder; 27. Chuck; 28. Push rod; 3. Tool assembly; 4. Truss structure; 41. Truss body; 42. Lateral movement assembly; 5. Clamping and feeding device; 51. Base frame; 52. Push rod; 53. Material clamp; 54. Feeding cylinder; 541. Push rod; 55. Rotary cylinder; 551. Feeding rod; 5511. Material trough; 56. Fixing plate; 57. Lifting mechanism; 6. Material; 7. Swing ring; 8. Sliding sleeve; 9. Swing rod; 91. Protrusion; 10. Swing seat; 11. Bearing; 12. Limiting seat; 121. Opening slot. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0032] The present invention will be further described below with reference to the embodiments.
[0033] Example: An automatic hole-punching machine, see attached figure. Figure 1 - Appendix Figure 8The system includes a workbench 1, with a clamping and feeding device 5 fixed at the top center of the workbench 1. A chuck assembly 2 and a tool assembly 3 are respectively installed on the workbench 1 on both sides of the clamping and feeding device 5. A truss structure 4 is installed on one side of the clamping and feeding device 5, including a truss body 41 and a transverse moving assembly 42 installed on one side of the truss body 41. The output end of the transverse moving assembly 42 is located on the outside of the truss body 41. The clamping and feeding device 5 includes a base frame 51 fixed to the workbench 1 and a push rod 52 fixed to the top of the base frame 51. The output end of the transverse moving assembly 42 is fixedly connected to a fixed plate 56. A lifting mechanism 57 is fixed to the top of the fixed plate 56, and the output end of the lifting mechanism 57 is fixedly connected to a lifting plate. A feeding cylinder 54 and a rotary cylinder 55 are fixed to the bottom of the lifting plate, and the output end of the feeding cylinder 54 is fixedly connected to a push rod 541. Next, the output end of the rotary cylinder 55 is fixedly connected to the feeding rod 551. The middle of the vertically arranged feeding rod 551 has a circular groove that does not penetrate horizontally. Material 6 is placed in the groove. A material clamp 53 is set on the side of the feeding rod 551 near the pushing rod 52. The material clamp 53 is fixed to the top of the base frame 51. The transverse component 42 is connected to the fixed plate 56. The fixed plate 56 is equipped with a lifting mechanism 57. The lifting end of the lifting mechanism 57 is connected to the lifting plate. The lifting mechanism 57 includes a servo motor and a lead screw. The servo motor is fixedly connected to the fixed plate 56. The lead screw is connected to the output end of the servo motor. A lead screw nut that cooperates with the lead screw is fixed on the lifting plate. The lead screw nut and the lead screw form a four-bar linkage. Two parallel ball guide rails are also set between the lifting plate and the fixed plate 56. This makes the back-and-forth movement of the lifting plate more stable. The feeding mechanism is set on the lifting plate.
[0034] like Figure 4 As shown, the feeding mechanism includes a feeding cylinder 54 and a rotary cylinder 55. Both the feeding cylinder 54 and the rotary cylinder 55 are fixed to the lower end of the lifting plate. The output end of the rotary cylinder 55 is connected to a feeding rod 551. The rotary cylinder 55 can control the feeding rod 551 to rotate 360 degrees around its axis. The feeding rod 551 has a material trough 5511 for accommodating the material 6. The cross-section of the material trough 5511 is C-shaped. The opening of the C-shaped structure is at the same height as the bottom end of the push rod 541, which ensures that the bottom end of the push rod 541 can smoothly enter the material trough. The material 6 is pushed onto the chuck 27 by the trough 5511. The output end of the feeding cylinder 54 is connected to the push rod 541, which has a Z-shaped structure and the bottom end of the push rod 541 is at the same height as the middle of the material 6. The push rod 541 is used to push the material 6 in the trough 5511 onto the chuck assembly 2 for clamping. A material clamp 53 is provided on the base frame 51. The material clamp 53 is located between the push rod 52 and the feeding rod 551. The tail end of the material clamp 53 is inclined to the outer top, and the output end of the push rod 52 passes through the side wall of the material clamp 53.
[0035] The chuck assembly 2 includes a clamping cylinder, a positioning plate 21 fixed on the worktable 1, an outer cylinder 26 disposed on the positioning plate 21, and a limiting tube 25 rotatably disposed within the outer cylinder 26. A pull rod 23 is disposed within the limiting tube 25, and a bearing is provided between the outer wall of the limiting tube 25 and the inner wall of the outer cylinder 26. The bearing reduces the resistance during rotation of the limiting tube 25. The chuck assembly 2 also includes a chuck 27 for clamping the workpiece, at least a portion of which is located within the limiting tube 25. The clamping part of 7 is petal-shaped and has the same clamping head structure as existing machine tools or power tools. The inner wall of the end face of the limiting tube 25 is an inclined surface that cooperates with the frustum-shaped outer wall of the chuck 27 for clamping. The chuck 27 is connected to one end of the pull rod 23, and the other end of the pull rod 23 is connected to the clamping cylinder. The number of clamping cylinders is the same as the number of pull rods 23, and the clamping cylinders are fixed to the upper end of the fixing plate 21. The chuck assembly 2 also includes an ejection mechanism for ejecting the material from the chuck 27.
[0036] The ejection mechanism includes an ejection cylinder 22 and an ejector rod 28. The number of ejection cylinders 22 and ejector rods 28 corresponds one-to-one with the number of chucks 27. The ejection cylinder 22 is fixed to the worktable 1 by a fixing bracket. The ejector rod 28 is at least partially located inside the pull rod 23. A support ring is provided at one end of the pull rod 23 near the chuck 27. The ejector rod 28 passes through the central hole of the support ring and is slidably connected to the central hole. The support ring supports the ejector rod 28, making the movement of the ejector rod 28 more stable and ensuring the ejection effect. The ejection cylinder 22 is connected to the worktable 1 by a bracket, and the piston rod of the ejection cylinder 22 is connected to the ejector rod 28.
[0037] A pulley 24 is fixedly connected to the limiting tube 25 located outside the outer cylinder 26. A motor is provided below the worktable 1, and the pulley on the output shaft of the motor is connected to the pulley 24 via a belt. The clamping cylinder is fixedly connected to the positioning plate 21, and the clamping cylinder is located above the outer cylinder 26. The piston rod of the clamping cylinder is connected to the pull rod 23 via a toggle mechanism, which is used to push and pull the pull rod 23 to move axially. The chuck 27 and the limiting tube 25 limit each other circumferentially. In the process of operation, the limiting tube 25 can rotate together with the chuck 27 and the material 6 clamped by the chuck 27.
[0038] The actuating mechanism includes a swing ring 7, a sliding sleeve 8, a swing rod 9, and a swing base 10. The sliding sleeve 8 is slidably connected to the limiting tube 25. A bearing 11 is provided between the swing ring 7 and the sliding sleeve 8. The inner ring of the bearing 11 is connected to the sliding sleeve 8, and the outer ring of the bearing 11 is connected to the swing ring 7 through a rotating pin. The upper side of the swing ring 7 is connected to the piston rod of the clamping cylinder, and the lower side of the swing ring 7 is hinged to the worktable 1. The swing base 10 is fixedly connected to the pull rod 23. The swing rod 9 is usually provided with three rods along the circumference. The pendulum ring 7 is evenly distributed, with one end of the pendulum rod 9 rotatably connected to the pendulum base 10, and the other end of the pendulum rod 9 located between the sliding sleeve 8 and the pendulum base 10. The sliding sleeve 8 has an inclined surface near the pendulum rod 9 for controlling the swing of the pendulum rod 9. The pendulum rod 9 has a protrusion 91 that cooperates with the limiting tube 25 to pull the pull rod 23 after the pendulum rod 9 rotates. Thus, the structure between the pendulum ring 7 and the limiting tube 25 is similar to the connecting bracket of a globe that can rotate 360 degrees.
[0039] The center of gravity of the swing arm 9 is located between the connection point of the swing arm 9 and the swing base 10 and the other end of the swing arm 9. Of course, a torsion spring can also be set to reset the swing arm 9. The limiting tube 25 is provided with a limiting seat 12, and the limiting seat 12 is provided with an opening groove 121 corresponding to the swing arm 9. The opening groove 121 is used to limit and guide the swing arm 9, so that the movement of the swing arm 9 is more accurate.
[0040] The positioning plate 21 in the chuck assembly 2 is provided with multiple sets of outer cylinders 26 (three sets in this example), and the number and position of the tool assembly 3 are adapted to the outer cylinders 26. The top of the material clamp 53 is provided with a hook structure. A pulley 24 is fixed to the outside of the outer cylinder 26, and a limiting tube 25 is sleeved in the pulley 24. Through the clamping and feeding device 5-truss structure 4, the worker only needs to place the material 6 into the material clamp 53. The push cylinder will push the material 6 in the material clamp 53 into the feeding rod 551. Since the feeding rod 551 has a slot structure, the material 6 can be pushed into the feeding rod 551, and the rear side will be limited by the feeding push rod 541. The feeding push rod 541 can be moved inward / outward by the feeding cylinder 54 to prevent the material 6 from sliding out from the other end of the feeding hole of the feeding rod 551. The feeding rod 551 moves to the chuck 27 of the chuck assembly 2 to be fed. In this device, the transverse component 42 in the truss can carry the structure of rotary cylinder 55, feeding cylinder 54, fixed plate 56, and lifting mechanism 57, and move along the truss body 41. At this time, the feeding rod 551 can be rotated 180 degrees by the rotary cylinder. After the groove of the feeding rod 551 is rotated, the feeding cylinder works, causing the feeding push rod 541 to push one end of the material 6 into the chuck 27. Then the clamping cylinder works, causing the pull rod 23 to drive the chuck 27 to move, so that the chuck 27 works to clamp the material 6. After all the chucks 27 have clamped the material 6, the motor works to drive the limit tube 25, the chucks 27 and the material 6 to rotate together. At this time, the tool assembly 3 moves towards the chuck assembly 2 under the action of the lead screw, and can then perform drilling on the material 6. Therefore, compared with the existing structure, this device can realize fast and automatic hole punching, is suitable for assembly line production, and improves work efficiency.
[0041] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.
Claims
1. An automatic punching machine, characterized in that, The device includes a workbench (1), which is equipped with a clamping and feeding device (5). On the workbench (1) on both sides of the clamping and feeding device (5), a chuck assembly (2) and a cutter assembly (3) are respectively provided. A truss structure (4) is provided on one side of the clamping and feeding device (5). The truss structure (4) includes a truss body (41) and a transverse component (42) provided on the truss body (41). The clamping and feeding device (5) includes a base frame (51) fixed on the workbench (1) and a push air rod (52) fixed on the top of the base frame (51). The push air rod (52) is used to push the material (6) on the material clamp (53) into the feeding mechanism. The transverse component (42) is connected to a fixed plate (56). A lifting mechanism (57) is provided on the fixed plate (56). The lifting end of the lifting mechanism (57) is connected to the lifting plate, and the feeding mechanism is provided on the lifting plate.
2. The automatic hole-punching machine according to claim 1, characterized in that, The feeding mechanism includes a feeding cylinder (54) and a rotary cylinder (55). The output end of the rotary cylinder (55) is connected to a feeding rod (551). The feeding rod (551) has a material trough (5511) for accommodating the material (6). The output end of the feeding cylinder (54) is connected to a push rod (541). The push rod (541) is used to push the material (6) in the material trough (5511) onto the clamping assembly (2) for clamping. A material clamp (53) is provided on the base frame (51). The material clamp (53) is located between the push rod (52) and the feeding rod (551).
3. An automatic punching machine according to claim 1, characterized in that, The chuck assembly (2) includes a clamping cylinder, a positioning plate (21) fixed on the worktable (1), an outer cylinder (26) disposed on the positioning plate (21), and a limiting tube (25) rotatably disposed in the outer cylinder (26). A pull rod (23) is disposed in the limiting tube (25). The chuck assembly (2) also includes a chuck (27) for clamping the workpiece. At least a portion of the chuck (27) is located in the limiting tube (25). One end of the chuck (27) is connected to one end of the pull rod (23), and the other end of the pull rod (23) is connected to the clamping cylinder. The chuck assembly (2) also includes an ejection mechanism for ejecting the material from the chuck (27).
4. An automatic punching machine according to claim 3, characterized in that, The ejection mechanism includes an ejection cylinder (22) and an ejector rod (28), wherein the ejector rod (28) is at least partially located inside the pull rod (23); the ejection cylinder (22) is connected to the worktable (1) via a bracket, and the piston rod of the ejection cylinder (22) is connected to the ejector rod (28).
5. An automatic socketing machine according to claim 3, characterized in that, The limiting tube (25) located outside the outer cylinder (26) is fixedly connected to a pulley (24). A motor is provided below the workbench (1), and the motor is connected to the pulley (24) for transmission. The clamping cylinder is fixedly connected to the positioning plate (21), and the clamping cylinder is located above the outer cylinder (26). The piston rod of the clamping cylinder is connected to the pull rod (23) through a toggle mechanism, which is used to push and pull the pull rod (23) to move axially. The chuck (27) and the limiting tube (25) are mutually circumferentially limited.
6. An automatic punching machine according to claim 2, characterized in that, The push rod (541) has a Z-shaped structure, and the bottom end of the push rod (541) is at the same height as the middle of the material (6); the cross-section of the material trough (5511) is a C-shaped structure, and the opening of the C-shaped structure is at the same height as the bottom end of the push rod (541).
7. An automatic punching machine according to claim 2, characterized in that, The tail end of the clamp (53) is inclined to the outer top, and the output end of the push rod (52) penetrates the side wall of the clamp (53).
8. An automatic hole-punching machine according to claim 3, characterized in that, The positioning plate (21) of the chuck assembly (2) is provided with multiple sets of outer cylinders (26), and the number and position of the tool assembly (3) are adapted to the outer cylinders (26).
9. An automatic socketing machine according to claim 5, characterized in that, The actuating mechanism includes a swing ring (7), a sliding sleeve (8), a swing rod (9), and a swing seat (10). The sliding sleeve (8) is slidably connected to the limiting tube (25). A bearing (11) is provided between the swing ring (7) and the sliding sleeve (8). The inner ring of the bearing (11) is connected to the sliding sleeve (8), and the outer ring of the bearing (11) is connected to the swing ring (7) through a rotating pin. The upper side of the swing ring (7) is connected to the piston rod of the clamping cylinder, and the lower side of the swing ring (7) is hinged to the worktable (1). The swing seat (10) is fixedly connected to the pull rod (23). One end of the swing rod (9) is rotatably connected to the swing seat (10). The other end of the swing rod (9) is located between the sliding sleeve (8) and the swing seat (10). The sliding sleeve (8) has an inclined surface near the swing rod (9) for controlling the swing of the swing rod (9) to control the rotation of the swing rod (9). One end of the swing rod (9) has a protrusion (91) that cooperates with the limiting tube (25) to pull the pull rod (23) after the swing rod (9) rotates.
10. An automatic hole-punching machine according to claim 9, characterized in that, The center of gravity of the swing rod (9) is located between the connection between the swing rod (9) and the swing seat (10) and the other end of the swing rod (9); the limiting tube (25) is provided with a limiting seat (12), and the limiting seat (12) is provided with an opening groove (121) corresponding to the swing rod (9).