Sheet metal part machining and punching device

Abstract

The application discloses a punching device for sheet metal part machining, and relates to the punching technology field of sheet metal part machining, which comprises a machine tool and a punching mechanism, the punching mechanism is arranged on the top of the machine tool, the punching mechanism comprises a device frame, the device frame is arranged on the top of the machine tool, a gas supply module is arranged on the top of the device frame, auxiliary sliding rails are arranged on the two sides of the top of the machine tool, mounting frames are arranged on the top of the auxiliary sliding rails, air cylinders are arranged on the inner sides of the mounting frames, and top sliding plates are arranged on the bottom of the device frame. The device does not need to frequently position the punching head and the punching module, and only relies on the linkage of the internal moving parts and the circulating advancement of the punching module, so that the problem that the punching speed is slow due to the upper limit of the moving speed of the moving mechanism is broken through, the punching production speed is further avoided from being limited, and the overall operation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of sheet metal processing and punching technology, specifically to a sheet metal processing and punching device. Background Technology

[0002] Sheet metal parts refer to metal components with specific structural shapes, dimensional accuracy, and functions, made from thin metal sheets typically ranging from 0.5 to 6 millimeters in thickness. These components are processed through a series of cold working processes, including stamping, bending, shearing, welding, riveting, and surface treatment, without altering the inherent properties of the metal material. These components do not require hot working processes such as melting and casting. Due to their advantages of light weight, high strength, good forming consistency, and low mass production cost, they are widely used in numerous fields, including electromechanical equipment enclosures and cabinets, household appliance housings and internal supports, automotive body panels and chassis components, aerospace instrument housings, and communication equipment accessories.

[0003] A punching device is a piece of equipment that uses mechanical, hydraulic, or pneumatic power to drive a punch to stamp various sheet materials such as thin metal sheets, plastics, and leather. It typically consists of a basic frame, a power drive system, punching execution components, a positioning and clamping mechanism, and an auxiliary chip removal unit. During operation, the sheet material to be processed is precisely fixed by the positioning components, and the power system drives the punch to perform reciprocating linear motion. Combined with the shearing action of the die, it punches through holes of specific shapes such as round holes, oblong holes, and irregular holes in the sheet material. It features high processing efficiency, good forming accuracy, and convenient operation, and is widely used in sheet metal processing, hardware production, furniture manufacturing, and many other fields.

[0004] However, the existing sheet metal punching device has the following shortcomings: Currently available sheet metal punching equipment achieves high-precision and high-stability punching operations on thin plates of different materials by using high-strength molds, servo drives, and CNC positioning technology. However, in batch operations, some sheet metal parts require a large number of punches. During the process of moving the punching head multiple times through a multi-linkage moving mechanism, the upper limit of the moving speed of the moving mechanism makes the batch punching speed slow, which limits the punching production speed and affects the work efficiency.

[0005] Therefore, the present invention proposes a punching device for sheet metal parts processing, so as to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a sheet metal punching device. During operation, the sheet metal is automatically transported to the top of the machine tool. A motor drives a transmission rod, which in turn drives a transmission gear. Through the meshing of the gear and its teeth, multiple connected traveling wheels form a circular traveling belt that rotates cyclically, simultaneously moving a positioning slide cylinder. The punching module then activates, driving a pressing slide bar to cyclically press down along the trajectory of the positioning slide cylinder, pushing the punch head to complete the punching of the sheet metal. This device, through the linkage of internal components and a cyclic propulsion mode, eliminates the frequent positioning steps of the punch head and punching module, overcoming the limitations of traditional equipment movement. The upper speed limit of the mechanism restricts the efficiency of batch punching, enabling efficient batch processing. At the same time, the rolling support of the moving wheels ensures the stability of the traveling wheel plate. The limiting force transmission structure of the slide bar and the top slide plate ensures that the tooth groove always fits the surface of the sheet metal, providing sufficient back pressure to the punch head to counteract the punching reverse force and avoid problems such as dimensional deviations, increased burrs, and mold damage caused by the punch head bouncing. The moving wheels can adaptively adjust the back pressure to prevent excessive pressure from damaging the sheet metal. In addition, the cylinders on both sides drive the punch head to move laterally, expanding the working range and applicability. The auxiliary slide rail provides damping force and power compensation to further ensure the accuracy of the punching position.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a sheet metal part processing punching device, comprising a machine tool and a punching mechanism, wherein the punching mechanism is disposed on the top of the machine tool; The punching mechanism includes a frame mounted on the top of the machine tool. An air supply module is mounted on the top of the frame. Auxiliary slide rails are mounted on both sides of the top of the machine tool. A mounting frame is mounted on the top of the auxiliary slide rails. A cylinder is mounted inside the mounting frame. A top slide plate is mounted at the bottom of the frame. A sheet metal plate is mounted on the top of the machine tool. A connecting frame is mounted on the top of the sheet metal plate. Multiple rods are mounted on the top of the connecting frame. A sliding bar is mounted inside each of the multiple rods and is located at the bottom of the top slide plate. A motor is mounted inside the connecting frame. A transmission rod is mounted at the output end of the motor. A transmission gear is mounted on the outer middle of the transmission rod.

[0008] Preferably, a movable wheel is installed at the other end of the transmission rod, an auxiliary wheel axle is installed on the outer side of the other end of the connecting frame, another movable wheel is rotatably connected to the outer side of the auxiliary wheel axle, the top surface of the slide bar slides on the bottom surface of the top slide plate, a travel wheel plate is provided on the top of the processing sheet metal plate, and sheet metal limiting strips are installed on both sides of the top of the machine tool.

[0009] Preferably, a connecting shaft is rotatably connected to the inner side of the traveling wheel plate, and another connecting shaft is rotatably connected to the inner side of the other end of the traveling wheel plate, with multiple traveling wheel plates and connecting shafts arranged in sequence.

[0010] Preferably, two anti-slip rubber strips are installed on the outer side of the travel wheel plate, and a positioning slide cylinder is installed on the inner side of the travel wheel plate, with two compression springs installed at one end of the positioning slide cylinder.

[0011] Preferably, the other end of the two compression springs is provided with a punch head, which is slidably connected to the inner side of the positioning slide.

[0012] Preferably, a limiting slide is provided on the inner end of the stamping head, and a sliding groove is provided on the inner side of the traveling wheel plate.

[0013] Preferably, a support slide bar is slidably connected to the inner side of the slide groove, and a support frame is installed on the other side of the support slide bar. The outer side of the support frame is installed at the output end of the cylinder.

[0014] Preferably, a punching frame is installed on the inner side of the support frame, a punching module is installed at the bottom of the punching frame, and a pressing slide is installed at the bottom output end of the punching module.

[0015] Preferably, the pressing slide bar slides inside the limiting slide, and the outside of the punching module is connected to a connecting air pipe.

[0016] Preferably, the other end of the connecting air pipe is connected to the air supply module, and the inner side of the slide groove is provided with a toothed groove, which engages with the transmission gear.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, when punching sheet metal parts, first places the sheet metal to be processed on top of the machine tool via an automatic transport device. Then, the motor is started, and the motor drives the transmission gear to rotate through the transmission rod. The meshing of the transmission gear and the tooth groove drives the travel wheel plate to move. Multiple travel wheel plates are connected in series via connecting shafts and close end to end to form a circular travel belt. As the transmission gear rotates, the whole system rotates in a cycle, synchronously driving the positioning slide cylinder to move. At the same time, the punching module is started, driving the pressing slide bar to cyclically press down following the movement of the positioning slide cylinder, pushing the punch head inside the positioning slide cylinder downward to complete the punching of the sheet metal. This device does not require frequent positioning of the punch head and punching module. It only relies on the linkage of internal moving parts and the cyclic advancement of the punching module to achieve rapid batch punching. This overcomes the problem of slow batch punching speed caused by the upper limit of the moving speed of the moving mechanism, further avoiding the limitation of punching production speed and improving overall operation efficiency.

[0018] 2. During operation, the transmission rod and the moving wheels on the connecting frame of this invention work together to roll on the surface of the sheet metal being processed, ensuring the stability of the movement of the traveling wheel plate. The slide bar at the top of the connecting frame slides at the bottom of the top slide plate, transmitting the limiting resistance of the top slide plate to the tooth groove without interfering with the movement of the traveling wheel plate. This ensures that the tooth groove always fits against the surface of the sheet metal being processed, providing sufficient back pressure for the punch head to counteract the reverse force generated during punching. This avoids problems such as dimensional deviations, increased burrs, and mold damage caused by the punch head springing back. At the same time, the moving wheels adaptively adjust the back pressure to prevent excessive back pressure from damaging the sheet metal. The cylinders on both sides of the device work together to drive the punch head to move laterally, improving the punching range and applicability. The auxiliary slide rail provides damping force and power compensation for the overall movement process, further ensuring the punching position accuracy of the punch head. Attached Figure Description

[0019] Figure 1 This is a perspective view of the main structure of a sheet metal punching device according to the present invention; Figure 2 This is a three-dimensional exploded view of the structure of a sheet metal punching device according to the present invention. Figure 3 A perspective view showing the position of the punching mechanism in a sheet metal processing punching device of the present invention; Figure 4 This is a three-dimensional exploded view of the punching mechanism in a sheet metal punching device according to the present invention. Figure 5 This is a partially exploded perspective view of the punching mechanism in a sheet metal punching device of the present invention. Figure 6 This is a three-dimensional exploded view of another part of the punching mechanism in a sheet metal punching device of the present invention.

[0020] In the diagram: 1. Machine tool; 2. Punching mechanism; 201. Frame; 202. Air supply module; 203. Auxiliary slide rail; 204. Mounting frame; 205. Cylinder; 206. Top slide plate; 207. Slide bar; 208. Rod post; 209. Connecting frame; 210. Motor; 211. Transmission gear; 212. Transmission rod; 213. Auxiliary wheel axle; 214. Moving wheel; 215. Support frame; 216. Supporting slide bar; 217. Punching frame; 218. Punching module; 219. Pressing slide bar; 220. Traveling wheel plate; 221. Connecting shaft; 222. Anti-slip rubber strip; 223. Positioning slide cylinder; 224. Punching head; 225. Compression spring; 226. Tooth groove; 227. Slide groove; 228. Limiting slide; 229. Connecting air pipe; 3. Sheet metal limiting strip; 4. Processed sheet metal plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1, according to Figure 1 - Figure 3 As shown, to achieve the above objectives, the present invention provides the following technical solution: a sheet metal part processing punching device, comprising a machine tool 1 and a punching mechanism 2, the punching mechanism 2 being disposed on the top of the machine tool 1, the punching mechanism 2 including a device frame 201, the device frame 201 being mounted on the top of the machine tool 1, an air supply module 202 being mounted on the top of the device frame 201, auxiliary slide rails 203 being mounted on both sides of the top of the machine tool 1, a mounting frame 204 being mounted on the top of the auxiliary slide rails 203, a cylinder 205 being mounted on the inner side of the mounting frame 204, a top slide plate 206 being mounted on the bottom of the device frame 201, a sheet metal plate 4 being disposed on the top of the machine tool 1, a connecting frame 209 being disposed on the top of the sheet metal plate 4, a plurality of rods 208 being disposed on the top of the connecting frame 209, and sliding rods 207 being disposed on the inner side of each of the plurality of rods 208, the sliding rods 207 being located at the top. At the bottom of the slide plate 206, a motor 210 is installed on the inner side of the connecting frame 209. A transmission rod 212 is installed at the output end of the motor 210. A transmission gear 211 is installed on the outer side of the middle of the transmission rod 212. A moving wheel 214 is installed at the other end of the transmission rod 212. An auxiliary wheel axle 213 is installed on the outer side of the other end of the connecting frame 209. Another moving wheel 214 is rotatably connected to the outer side of the auxiliary wheel axle 213. The top surface of the slide bar 207 slides on the bottom surface of the top slide plate 206. A traveling wheel plate 220 is provided on the top of the sheet metal plate 4. Sheet metal limit strips 3 are installed on both sides of the top of the machine tool 1. A connecting shaft 221 is rotatably connected to the inner side of the traveling wheel plate 220. Another connecting shaft 221 is rotatably connected to the inner side of the other end of the traveling wheel plate 220. Multiple traveling wheel plates 220 and connecting shafts 221 are arranged in sequence.

[0023] The overall effect of Embodiment 1 is as follows: When punching the sheet metal parts begins, the sheet metal plate 4 is first precisely placed on the top processing station of the machine tool 1 via an automatic transport device, completing the loading and positioning of the workpiece. Then, the motor 210 is turned on, and the torque output by the motor 210 is transmitted to the transmission gear 211 through the transmission rod 212, driving the transmission gear 211 to rotate synchronously. Utilizing the meshing transmission relationship between the transmission gear 211 and the inner tooth groove 226 of the traveling wheel plate 220, the traveling wheel plate 220 is driven to move along a preset trajectory. Multiple traveling wheel plates 220 are connected in series by hinges via connecting shafts 221 and form a closed-loop traveling belt structure at the ends. This structure achieves overall circulation through the continuous drive of the transmission gear 211. Rotation, unlike the limitations of traditional single-station punching, enables continuous batch processing. During this process, the positioning slide cylinder 223, installed inside the travel wheel plate 220, moves synchronously with the travel wheel plate 220, forming a dynamically moving punching execution carrier component. The support slide bar 216 slides within the slide groove 227, working in conjunction with the support frame 215 to support the travel wheel plate 220 and simultaneously fix the position of the support frame 215. At the same time, the punching module 218 starts and, based on the movement trajectory and position of the positioning slide cylinder 223, drives the pressing slide bar 219 to move downwards in a high-frequency cyclic manner. When the pressing slide bar 219 extends into the inside of the positioning slide cylinder 223, it forms a downward force on the built-in punching head 224. The thrust of the punch head 224 pushes it against the sheet metal plate 4 at the bottom to complete a single punching operation. Unlike traditional punching devices that require frequent manual alignment and precise program positioning of the punch head 224 and punching module 218, this device relies on the linkage structure of gear and tooth groove 226 meshing transmission and annular travel belt movement. It only needs to use the moving parts inside the punching mechanism 2 to rotate in a cycle, in conjunction with the automatic triggering of the punching module 218, to achieve rapid batch punching of different positions on the sheet metal plate 4, shortening the time for station switching and positioning calibration, and improving the efficiency of punching operations. During the entire transmission and movement process, the moving wheel 214 at the other end of the transmission rod 212 and the other end of the connecting frame 209 The movable wheel 214 on the auxiliary axle 213 forms a cooperative guiding support structure. The two work together to achieve smooth rotation and movement on the top of the processed sheet metal plate 4, providing stable support and guidance for the annular travel belt, preventing the travel wheel plate 220 from deviating or jamming during movement, and ensuring the stable movement of the travel wheel plate 220. The slide bar 207 at the top of the connecting frame 209 and the bottom of the top slide plate 206 form a sliding limit engagement. Without interfering with the normal movement of the travel wheel plate 220, the limiting resistance of the top slide plate 206 on the slide bar 207 is transmitted to the tooth groove 226 through the connecting frame 209, so that the tooth groove 226 is always tightly fitted to the top surface of the processed sheet metal plate 4, thereby providing precise and controllable back pressure for the stamping head 224.This back pressure is used to balance the elastic restoring force generated by the punch head 224 when punching the sheet metal plate 4 at the bottom, preventing the punch head 224 from springing up due to the reverse force, thus avoiding common problems such as out-of-tolerance punching dimensions, increased burrs, and mold damage. At the same time, the rolling support of the moving wheel 214 on the surface of the sheet metal plate 4 adaptively adjusts the back pressure, preventing excessive back pressure from causing additional damage such as indentations and deformation on the surface of the sheet metal plate 4, thus balancing punching quality and sheet surface integrity. In addition, the cylinders 205 on both sides of the device work together to drive the punching frame 217 and the punching module 218 to reciprocate horizontally, thereby driving the punch head 224 to achieve lateral displacement adjustment and realize a single ring travel belt. The trajectory-based operation significantly expands the scope and applicability of punching operations, meeting the processing needs of sheet metal parts with different specifications and hole distributions. During this process, the auxiliary slide rails 203 on both sides of the top of the machine tool 1 provide guidance and support for the movement of the mounting frame 204 and cylinder 205. Simultaneously, their damping characteristics provide damping force and power compensation throughout the movement process, offsetting inertial impacts and ensuring the positional accuracy of the punch head 224 during lateral movement and punching. Furthermore, the air supply module 202, connected to the air pipe 229, provides a stable air source to the punching module 218, ensuring the stability of the thrust output of the pressing slide bar 219, further improving the consistency and reliability of the punching operation.

[0024] Example 2, according to Figure 4 - Figure 6 As shown, two anti-slip rubber strips 222 are installed on the outer side of the travel wheel plate 220, and a positioning slide cylinder 223 is installed on the inner side of the travel wheel plate 220. Two compression springs 225 are installed at one end of the positioning slide cylinder 223, and a punch head 224 is installed at the other end of the two compression springs 225. The punch head 224 is slidably connected to the inner side of the positioning slide cylinder 223. A limit slide track 228 is opened at the inner end of the punch head 224. A slide groove 227 is opened on the inner side of the travel wheel plate 220. A support slide bar 216 is slidably connected to the inner side of the slide groove 227. The other side of the support slide bar 216 is equipped with... A support frame 215 is provided, with the outer side of the support frame 215 installed at the output end of the cylinder 205. A punching frame 217 is installed on the inner side of the support frame 215. A punching module 218 is installed at the bottom of the punching frame 217. A pressing slide 219 is installed at the bottom output end of the punching module 218. The pressing slide 219 slides on the inner side of the limiting slide 228. A connecting air pipe 229 is connected to the outer side of the punching module 218. The other end of the connecting air pipe 229 is connected to the air supply module 202. A toothed groove 226 is opened on the inner side of the slide groove 227. The toothed groove 226 engages with the transmission gear 211.

[0025] The overall effect of Embodiment 2 is as follows: multiple traveling wheel plates 220 are hinged to form a closed-loop structure, which is combined with gear meshing to achieve cyclic movement. Combined with the follow-type trigger punching of the punching module 218, continuous batch punching operation is realized. Compared with the traditional single-station punching device, the operation efficiency is improved. It is suitable for large-scale sheet metal processing scenarios. Relying on the limiting resistance transmission structure of the slide bar 207 and the top slide plate 206, the positioning slide cylinder 223 is tightly fitted with the sheet metal, providing precise back pressure for the punching head 224. At the same time, the rolling support of the moving wheel 214 is used to adaptively adjust the back pressure, avoiding the problem of the punching head 224 springing up. It also prevents excessive back pressure from damaging the sheet metal. The damping force and power compensation of the auxiliary slide rail 203 offset the inertial impact during the movement. With the cooperative guidance of the moving wheel 214, the positioning accuracy of the punching head 224 is improved.

[0026] The working principle of the entire equipment is as follows: When punching holes in sheet metal parts begins, the sheet metal plate 4 is first placed on top of the machine tool 1 via an automatic transport device. Then, the motor 210 is turned on. The motor 210 drives the transmission gear 211 to rotate via the transmission rod 212. This causes the transmission gear 211 to move the traveling wheel plate 220 through meshing with the tooth groove 226. Multiple traveling wheel plates 220 are connected in series via connecting shaft 221 and closed at the ends to form an annular traveling belt. Then, through the movement of multiple traveling wheel plates 220, the entire traveling wheel plate rotates as it moves. During this process, the positioning slide 223 is moved along with it. At the same time, the punching module 218 is activated, which drives the pressing slide 219 to move downward repeatedly according to the movement of the positioning slide 223. This causes the pressing slide 219 to push the punching head 224 located at the bottom of the positioning slide 223 downward, thus realizing the punching operation. During this operation, since it is not necessary to frequently position the punching head 224 and the punching module 218, it is only necessary to activate the punching module 218 to cyclically advance during the movement of the moving parts inside the punching mechanism 2, thereby realizing rapid batch punching.

[0027] In this system, the movable wheel 214 at the other end of the transmission rod 212 cooperates with the movable wheel 214 on the auxiliary wheel axle 213 at the other end of the connecting frame 209 to enable multiple movable wheels 214 to rotate and move on the top of the sheet metal plate 4, thereby ensuring the stable movement of the traveling wheel plate 220. Furthermore, the slide bar 207 at the top of the connecting frame 209 slides at the bottom of the top slide plate 206, limiting its movement without affecting the traveling wheel plate 220. This allows the limiting resistance of the top slide plate 206 on the slide bar 207 to be transmitted to the tooth groove 226, ensuring that the tooth groove 226 always fits against the top of the sheet metal plate 4, thus ensuring the stamping head 224 can effectively process the bottom. Sufficient back pressure is provided when punching the sheet metal plate 4 to prevent the punch head 224 from springing up due to the reverse force generated between the punch head 224 and the sheet metal plate 4 during punching, which would lead to problems such as out-of-tolerance punching dimensions, increased burrs, and damage. In addition, the aforementioned moving wheel 214 moves on the sheet metal plate 4 while ensuring that the excessive back pressure of the punch head 224 does not cause additional damage to the sheet metal plate 4. The punch head 224 is moved laterally through the cooperation between the cylinders 205 on both sides, which improves the punching working range and applicability. During this process, the auxiliary slide rail 203 provides damping force and power compensation for the entire movement process, improving the positional accuracy of the punch head 224 in punching.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A punching device for sheet metal parts processing, characterized in that: It includes a machine tool (1) and a punching mechanism (2), wherein the punching mechanism (2) is disposed on the top of the machine tool (1); The punching mechanism (2) includes a device frame (201), which is mounted on the top of the machine tool (1). An air supply module (202) is mounted on the top of the device frame (201). Auxiliary slide rails (203) are mounted on both sides of the top of the machine tool (1). A mounting frame (204) is mounted on the top of the auxiliary slide rails (203). A cylinder (205) is mounted inside the mounting frame (204). A top slide plate (206) is mounted on the bottom of the device frame (201). A machining center is located on the top of the machine tool (1). Sheet metal plate (4), the top of the processed sheet metal plate (4) is provided with a connecting frame (209), the top of the connecting frame (209) is provided with multiple rods (208), the inner side of each of the multiple rods (208) is provided with a sliding rod (207), the sliding rod (207) is located at the bottom of the top sliding plate (206), the inner side of the connecting frame (209) is provided with a motor (210), the output end of the motor (210) is provided with a transmission rod (212), and the middle outer side of the transmission rod (212) is provided with a transmission gear (211).

2. The sheet metal punching device according to claim 1, characterized in that: The other end of the transmission rod (212) is equipped with a movable wheel (214), the other side of the connecting frame (209) is equipped with an auxiliary wheel axle (213), the outer side of the auxiliary wheel axle (213) is rotatably connected to another movable wheel (214), the top surface of the slide bar (207) slides on the bottom surface of the top slide plate (206), the top of the processing sheet metal plate (4) is provided with a travel wheel plate (220), and sheet metal limit strips (3) are installed on both sides of the top of the machine tool (1).

3. The sheet metal punching device according to claim 2, characterized in that: The inner side of the traveling wheel plate (220) is rotatably connected to a connecting shaft (221), and the inner side of the other end of the traveling wheel plate (220) is rotatably connected to another connecting shaft (221). Multiple traveling wheel plates (220) and connecting shafts (221) are arranged in sequence.

4. The sheet metal punching device according to claim 2, characterized in that: Two anti-slip rubber strips (222) are installed on the outer side of the travel wheel plate (220), and a positioning slide cylinder (223) is installed on the inner side of the travel wheel plate (220). Two compression springs (225) are installed at one end of the positioning slide cylinder (223).

5. The sheet metal punching device according to claim 4, characterized in that: The other end of the two compression springs (225) is provided with a punch head (224), which is slidably connected to the inside of the positioning slide (223).

6. The sheet metal punching device according to claim 5, characterized in that: The inner end of the stamping head (224) is provided with a limiting slide (228), and the inner side of the traveling wheel plate (220) is provided with a slide groove (227).

7. The sheet metal punching device according to claim 6, characterized in that: The inner side of the slide groove (227) is slidably connected to a support slide bar (216). A support frame (215) is installed on the other side of the support slide bar (216), and the outer side of the support frame (215) is installed at the output end of the cylinder (205).

8. The sheet metal punching device according to claim 7, characterized in that: A punching frame (217) is installed on the inner side of the support frame (215), a punching module (218) is installed at the bottom of the punching frame (217), and a pressing slide (219) is installed at the bottom output end of the punching module (218).

9. The sheet metal punching device according to claim 8, characterized in that: The pressing slide (219) slides on the inner side of the limiting slide (228), and the outer side of the punching module (218) is connected to the connecting air pipe (229).

10. The sheet metal punching device according to claim 9, characterized in that: The other end of the connecting air pipe (229) is connected to the air supply module (202), and the inner side of the slide groove (227) is provided with a toothed groove (226), which engages with the transmission gear (211).

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