A sheet metal punching machine with a material unloading anti-blocking structure

Abstract

The invention discloses a sheet metal stamping machine with a material unblocking structure, which relates to the field of sheet metal and comprises a base, wherein the upper surface of the base is connected with a lower pressure plate and a top frame, the bottom of the top frame is connected with an upper pressure plate, a hydraulic cylinder is installed on the top of the top frame, the upper pressure plate is connected to the output end of the hydraulic cylinder, and a recovery box is connected inside the base; in the sheet metal stamping machine with the material unblocking structure, the first notch can expand the distance between the first notch and the second notch when moving, so as to prevent the material unblocking during the use of the stamping machine, and secondly, when the cleaning rod rotates to the side of the waste material, the waste material can be squeezed into the through groove, and the waste material can fall into the recovery box through the through groove for collection, thereby improving the material unblocking function of the sheet metal stamping machine, and finally, the debris or residue on the upper surface of the lower pressure plate can be cleaned by the nozzle, so as to prevent the position deviation of the workpiece during processing and improve the processing quality of the stamping machine.

Description

Technical Field

[0001] The invention relates to the technical field of sheet metal, in particular to a sheet metal punching machine with a blanking anti-blocking structure. Background Art

[0002] Sheet metal is a metal sheet processing technology used to manufacture automotive parts, building components, furniture and other products. Sheet metal processing can process metal sheets into various shapes and structures through stamping, bending, shearing, welding and other processes. Sheet metal processing requires a stamping machine. Sheet metal stamping machines are mainly used to process metal sheets into parts of various shapes and sizes through impact and pressure. This machine can usually punch, bend and form metal sheets through molds to meet the requirements of precision and production efficiency in different industrial fields.

[0003] In the prior art, a Chinese patent with authorization announcement number CN217941511U discloses a sheet metal stamping device, which belongs to the sheet metal field. Its technical points include a bottom template, an upper template is arranged on the upper side of the bottom template, a lower sandwich plate and an upper sandwich plate are arranged between the bottom template and the upper template, sliding grooves are provided on both sides of the lower sandwich plate, a lower stamping die is arranged between the lower sandwich plate and the upper sandwich plate, an upper stamping die is slidably arranged on the upper template, a dislocation hole is provided on the side of the lower stamping die close to the upper stamping die, a push rod is slidably connected in the dislocation hole, the push rod passes through the lower sandwich plate and extends downward, and a demoulding component is arranged between the bottom template and the lower sandwich plate; the sliding groove is designed to be inclined, and the stamped metal sheet moves along the sliding groove to the outside of the bottom template. At this time, collection equipment can be placed on both sides of the sliding groove to realize automatic collection, without manual removal, saving time and effort, and improving work efficiency;

[0004] In the prior art, a Chinese patent with the authorization announcement number CN118180236A discloses a stamping machine that is convenient for recycling waste materials. The technical key points of the stamping machine are that the front surface of the recycling mechanism is fixedly connected with a driving mechanism; through the recycling mechanism and the driving mechanism, after the waste materials are generated, they are recycled into the recycling box through the recycling port, and under the guidance of the guide plate, they can enter between the two crushing rollers, and the two crushing rollers are rotated by the driving mechanism, so that the waste materials can be further crushed, and then they are convenient for collection;

[0005] In the prior art, a Chinese patent with the authorization announcement number CN220611906U discloses an automobile sheet metal stamping die, which belongs to the sheet metal field. The technical key points are to stamp the sheet metal parts through a stamping plate. After the stamping is completed, the stamping plate is driven to move upward and away from the die by the contraction of the hydraulic cylinder, and then the handle is turned to drive the screw to rotate, thereby driving the extrusion plate to rotate and move upward, and the extrusion plate squeezes the sheet metal part, so that the sheet metal part moves out of the die, and finally the sheet metal part is taken out. The operation is simple, the sheet metal part is convenient to take out, and the use effect is good;

[0006] At present, most sheet metal stamping machines on the market still have certain shortcomings when in use. As described in the above document, the slide chute is designed to be inclined, and the stamped metal sheet moves along the slide chute to the outside of the bottom template. When the simple sliding friction is large, it will cause blockage;

[0007] Secondly, some stamping machines are punching and cutting. As described in the above document, after the waste is generated, it will be recycled into the recycling box through the recycling port. If the material angle is not right, it is easy to get stuck in the cutting position and cause blockage. The blockage will affect the feeding, thereby reducing the processing efficiency. Finally, the debris generated by the long-term processing of the stamping machine will affect the stability of the placement of the workpiece, easily reduce the processing quality, and there are certain shortcomings in its use. Summary of the invention

[0008] The purpose of the present invention is to provide a sheet metal stamping machine with an anti-blocking structure for material discharge, so as to solve the problems raised in the above background technology that the material discharge port is prone to blockage during the punching machine processing, and that the surface of the lower pressure plate of the punching machine is prone to residue or waste that affects the processing efficiency.

[0009] To achieve the above object, the present invention provides the following technical solution: a sheet metal punching machine with a blanking anti-blocking structure, comprising a base, a lower pressing plate and a top frame connected to the upper surface of the base, an upper pressing plate connected to the bottom of the top frame, a hydraulic cylinder installed on the top of the top frame, the upper pressing plate connected to the output end of the hydraulic cylinder, and a recovery box connected inside the base;

[0010] A movable groove is formed through the top of the lower pressing plate, and an adjusting mechanism is provided inside the movable groove to prevent material discharge from being blocked;

[0011] An L-shaped rod is fixed to the side of the upper pressing plate, and a rotating mechanism for cleaning the upper surface of the lower pressing plate is arranged on the side of the upper pressing plate.

[0012] Furthermore, the adjusting mechanism includes a movable block, and the movable block is symmetrically connected to the movable groove, and the side surface of the movable block and the inner side of the lower pressure plate are respectively penetrated by a first notch and a second notch, and guide blocks are fixed at both ends of the movable block, and the guide blocks penetrate and slide inside the guide groove, and the guide groove is opened on the side surface of the movable groove, an internal connection block is fixed inside the movable groove, and a placement groove is opened on the side surface of the internal connection block, and a motor is installed inside the placement groove, and the output end of the motor is fixed with a first rotating block, and a first fixed block is fixed on the side surface of the first rotating block, and a second rotating block side is rotated with a rotating rod on the side surface of the internal connection block, and a connecting block is fixed on the right end of the rotating rod, and a second fixed block is fixed on the left side of the connecting block, and the second fixed block surface is rotatably connected to the other side of the second rotating block, and a third rotating block is symmetrically connected to the right side of the connecting block, and the third rotating block is rotatably connected to the connecting block, and the ends of the third rotating block are rotatably connected with a rotating shaft, and the rotating shaft is fixed on the back of the movable block.

[0013] Furthermore, the rotating mechanism includes a tooth plate, and the tooth plate is fixed on the side of the L-shaped rod, the side of the tooth plate is meshed and connected with a large gear, the back of the large gear is installed with a one-way bearing, the back of the one-way bearing is connected to a connecting rod, the connecting rod rotates on the side of the lower pressure plate, a first bevel gear is fixed to the surface of the connecting rod, the side of the first bevel gear is meshed and connected with one end of a double-headed bevel gear rod, the double-headed bevel gear rod passes through and rotates inside the first external block, the first external block is fixed to the side of the lower pressure plate, and the other end of the double-headed bevel gear rod is meshed and connected with a second bevel gear.

[0014] Furthermore, the second bevel gear penetrates and rotates inside the second external block, the second external block is fixed to the side of the lower pressure plate, a cleaning rod is fixed to the top of the second bevel gear, and a through groove is opened through the top of the lower pressure plate.

[0015] Furthermore, a diverter plate is installed on the top of the cleaning rod, and a pressing mechanism for cleaning the upper surface of the lower pressure plate is provided on the top of the cleaning rod.

[0016] Furthermore, the pressing mechanism comprises a nozzle, a side surface of the nozzle is connected to a side surface of the diverter plate, and a plurality of groups of the nozzles are arranged on the surface of the diverter plate.

[0017] Furthermore, a sealing shaft is installed on the upper surface of the diverter plate, a third external connection block is fixed on the right side of the lower pressure plate, and an air cushion is connected to the upper surface of the third external connection block.

[0018] Furthermore, a connecting pipe is connected between the side of the air cushion and the top of the sealing shaft, the connecting pipe is made of hard plastic, and a pressing block is fixed on the right side of the upper pressure plate.

[0019] Furthermore, a one-way valve is installed at the front of the air cushion, and the air cushion is through-connected to the diverter plate through a connecting pipe and a sealing shaft, and the sealing shaft is rotationally connected to the connecting pipe.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The sheet metal punching machine with a material unloading anti-blocking structure can expand the distance between the first notch and the second notch when moving, thereby preventing the unloading blockage from occurring during the use of the punching machine. Secondly, when the cleaning rod rotates to the side of the waste material, the waste material can be squeezed into the through-groove, and the waste material can fall into the recycling box through the through-groove for collection, thereby improving the unloading function of the sheet metal punching machine. Finally, the debris or residue on the upper surface of the lower pressing plate can be cleaned through the nozzle, thereby preventing the position deviation of the workpiece during processing and improving the processing quality of the punching machine.

[0022] 2. A first rotating block is provided, and the connection block can be driven to rotate left and right through the rotation of the first rotating block. The motor only needs to drive the first rotating block to rotate in one direction, and does not need to rotate back and forth to start, thereby increasing the service life of the motor;

[0023] 3. A connecting block is provided, through which the two third rotating blocks can be driven to move synchronously in opposite directions at the same time, thereby increasing the size between the first notch and the second notch and improving the efficiency of sheet metal cutting;

[0024] 4. A one-way bearing is provided, through which the large gear can drive the connecting rod to rotate in only one direction, and no power is provided when rotating in the other direction, thereby preventing the cleaning rod from reversing and improving the reliability of the cleaning rod in cleaning the waste on the upper surface of the lower pressure plate;

[0025] 5. A sealing shaft is provided, through which the connection between the manifold plate and the connecting pipe can be sealed, while the through connection between the connecting pipe and the manifold plate is not affected, thereby improving the efficiency of the nozzle gas in cleaning the debris on the upper surface of the lower pressure plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall front-view stereoscopic structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the overall rear-view stereoscopic structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the base of the present invention;

[0029] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the lower pressing plate of the present invention;

[0030] Figure 5 It is a schematic diagram of an enlarged three-dimensional structure of the rotating shaft of the present invention;

[0031] Figure 6 For the present invention Figure 5 The enlarged three-dimensional structure diagram of the middle A part;

[0032] Figure 7 This is a schematic diagram of the split three-dimensional structure of the upper pressing plate of the present invention;

[0033] Figure 8 For the present invention Figure 7 The enlarged three-dimensional structure diagram of the middle B part;

[0034] Fig. 9 It is a schematic diagram of the enlarged three-dimensional structure of the connecting pipe of the present invention.

[0035] In the figure: 1, base; 2, lower pressure plate; 3, top frame; 4, upper pressure plate; 5, hydraulic cylinder; 6, recovery box; 201, movable groove; 202, movable block; 203, first notch; 204, second notch; 205, guide block; 206, guide groove; 207, internal block; 208, placement groove; 209, motor; 210, first rotating block; 211, first fixed block; 212, second rotating block; 213, rotating rod; 214, connecting block; 215, second fixed block; 216, third rotating block; 21 7. Rotating shaft; 401. L-shaped rod; 402. tooth plate; 403. large gear; 404. one-way bearing; 405. connecting rod; 406. first bevel gear; 407. double-headed bevel gear rod; 408. first external block; 409. second bevel gear; 410. second external block; 411. cleaning rod; 412. diverter plate; 413. nozzle; 414. sealing shaft; 415. connecting pipe; 416. third external block; 417. air cushion; 418. one-way valve; 419. through groove; 420. pressing block. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1: Figure 1-Figure 6 The technical solution shown in the figure, the present invention provides the following technical solution: In order to solve the problem that the feed port is easily blocked during the processing of the sheet metal stamping machine, an adjustment mechanism is disclosed:

[0038] It includes a base 1, the upper surface of the base 1 is connected with a lower pressure plate 2 and a top frame 3, the bottom of the top frame 3 is connected with an upper pressure plate 4, a hydraulic cylinder 5 is installed on the top of the top frame 3, the upper pressure plate 4 is connected to the output end of the hydraulic cylinder 5, a recovery box 6 is connected inside the base 1, a movable groove 201 is penetrated through the top of the lower pressure plate 2, an adjusting mechanism is arranged inside the movable groove 201 to prevent material blocking, an L-shaped rod 401 is fixed on the side of the upper pressure plate 4, a rotating mechanism for cleaning the upper surface of the lower pressure plate 2 is arranged on the side of the upper pressure plate 4, the adjusting mechanism includes a movable block 202, and the movable block 202 is symmetrically connected to the inside of the movable groove 201, a first notch 203 and a second notch 204 are penetrated through the side of the movable block 202 and the inner side of the lower pressure plate 2 respectively, guide blocks 205 are fixed at both ends of the movable block 202, the guide block 205 penetrates and slides inside the guide groove 206, and the guide groove 206 is arranged in the movable groove On the side of 201, an internal block 207 is fixed inside the movable groove 201, and a placement groove 208 is opened on the side of the internal block 207. A motor 209 is installed inside the placement groove 208. A first rotating block 210 is fixed to the output end of the motor 209, and a first fixed block 211 is fixed to the side of the first rotating block 210. The surface of the first fixed block 211 is rotatably connected with one side of the second rotating block 212. A rotating rod 213 is rotatably connected to the side of the internal block 207. A connecting block 214 is fixed to the right end of the rotating rod 213. A second fixed block 215 is fixed to the left side of the connecting block 214. The surface of the second fixed block 215 is rotatably connected to the other side of the second rotating block 212. A third rotating block 216 is symmetrically connected to the right side of the connecting block 214. The third rotating block 216 is rotatably connected to the connecting block 214. The ends of the third rotating block 216 are rotatably connected to a rotating shaft 217, and the rotating shaft 217 is fixed to the back of the movable block 202.

[0039] After the sheet metal stamping machine punches, under the punching action of the upper pressing plate 4, the waste of the workpiece can fall between the first notch 203 and the second notch 204 or directly fall into the recycling box 6. When the upper pressing plate 4 is lifted upward under the drive of the hydraulic cylinder 5, the motor 209 is started. When the motor 209 is started, the output end can drive the first rotating block 210 to rotate. When the first rotating block 210 rotates, it can push the second rotating block 212 to move through the first fixed block 211. When the second rotating block 212 moves, it can push the second fixed block 215 to move. When the second fixed block 215 moves, it can drive the connecting block 214 to rotate. When the connecting block 214 rotates, it can rotate on the side of the internal block 207 through the rotating rod 213. When the connecting block 214 rotates, the second rotating block 212 can rotate through the first fixed block 211 and the second fixed block 215. At the same time, the connecting block 214 rotates The right side can drive the two third rotating blocks 216 to rotate, and the two third rotating blocks 216 will move in opposite directions. When the third rotating block 216 rotates, it can rotate through the rotating shaft 217. At the same time, the third rotating block 216 can push the rotating shaft 217 to move. When the rotating shaft 217 moves, it can drive the movable block 202 to move. When the movable block 202 moves, it can drive the guide block 205 to move. When the guide block 205 moves, it can slide through the guide groove 206. When the movable block 202 slides, it can drive the first notch 203 to move. When the first notch 203 moves, the distance between the first notch 203 and the second notch 204 can be expanded. When the expansion occurs, the stamping waste stuck between the first notch 203 and the second notch 204 will fall into the recycling box 6 for collection, thereby preventing the material discharge blockage during the use of the stamping machine and improving the use and processing efficiency of the stamping machine.

[0040] Embodiment 2: Figure 2 , Figure 4 , Figure 7 and Figure 8 The technical solution shown in the figure, the present invention provides the following technical solution: In order to solve the problem that waste or other objects of the sheet metal punching machine may fall on the upper surface of the lower pressing plate 2 and need to be manually removed, affecting the use efficiency, a rotating mechanism is disclosed:

[0041] The rotating mechanism includes a tooth plate 402, and the tooth plate 402 is fixed on the side of the L-shaped rod 401, the side of the tooth plate 402 is meshed with a large gear 403, the back of the large gear 403 is installed with a one-way bearing 404, the back of the one-way bearing 404 is connected to a connecting rod 405, the connecting rod 405 rotates on the side of the lower pressure plate 2, a first bevel gear 406 is fixed on the surface of the connecting rod 405, one end of a double-headed bevel gear rod 407 is meshed with the side of the first bevel gear 406, the double-headed bevel gear rod 407 passes through and rotates inside the first external block 408, the first external block 408 is fixed on the side of the lower pressure plate 2, and the other end of the double-headed bevel gear rod 407 is meshed with a second bevel gear 409 , the second bevel gear 409 rotates through the second external block 410, the second external block 410 is fixed to the side of the lower pressure plate 2, a cleaning rod 411 is fixed on the top of the second bevel gear 409, and a through groove 419 is opened on the top of the lower pressure plate 2. When the sheet metal punching machine is in use, the hydraulic cylinder 5 can push the upper pressure plate 4 to move downward, and the operator needs to take away the workpiece on the upper surface of the lower pressure plate 2. When the upper pressure plate 4 moves downward, it can drive the L-shaped rod 401 to move, and when the L-shaped rod 401 moves, it can drive the tooth plate 402 to move. When the tooth plate 402 moves downward, it can drive the large gear 403 to mesh and rotate, and when the large gear 403 meshes and rotates, it can drive the one-way bearing 4 04 rotates, and when the one-way bearing 404 rotates, the connecting rod 405 can rotate through the lower pressure plate 2. When the upper pressure plate 4 moves upward, the toothed plate 402 can drive the large gear 403 to mesh and rotate. When the large gear 403 rotates, it can rotate through the one-way bearing 404, which can prevent the first bevel gear 406 from rotating, thereby preventing the cleaning rod 411 from reversing. When the connecting rod 405 rotates, it can drive the first bevel gear 406 to rotate. When the first bevel gear 406 rotates, it can mesh and drive the double-headed bevel gear rod 407 to rotate. When the double-headed bevel gear rod 407 rotates, it can rotate through the first external block 408. When the double-headed bevel gear rod 407 rotates, the left end can To drive the second bevel gear 409 to mesh and rotate. When the second bevel gear 409 meshes and rotates, it can rotate through the second external block 410. When the second bevel gear 409 rotates, it can drive the cleaning rod 411 to rotate. The cleaning rod 411 can rotate on the upper surface of the lower pressure plate 2. When the cleaning rod 411 rotates to the side of the waste protruding from the upper surface of the lower pressure plate 2, it can be squeezed. After being squeezed, the waste can be squeezed into the through groove 419. The waste can fall into the recycling box 6 through the through groove 419 for collection, thereby improving the unloading function of the sheet metal stamping machine, preventing stamping waste from appearing on the upper surface of the lower pressure plate 2 during blockage, and further improving the efficiency of sheet metal stamping.

[0042] Embodiment 3: Figure 3 , Figure 4 , Figure 8 and Fig. 9The technical solution shown in the figure, the present invention provides the following technical solution: In order to solve the problem that the sheet metal stamping machine is inconvenient to clean the waste chips generated after processing, which easily leads to the deviation of the workpiece during processing and reduces the product quality, based on the second embodiment, a pressing mechanism is disclosed:

[0043] A diverter plate 412 is installed on the top of the cleaning rod 411, and a pressing mechanism for cleaning the upper surface of the lower pressure plate 2 is arranged on the top of the cleaning rod 411. The pressing mechanism includes a nozzle 413, and the side of the nozzle 413 is connected to the side of the diverter plate 412. There are multiple groups of nozzles 413 on the surface of the diverter plate 412. A sealing shaft 414 is installed on the upper surface of the diverter plate 412. A third external block 416 is fixed on the right side of the lower pressure plate 2. An air cushion 417 is connected to the upper surface of the third external block 416. The side of the air cushion 417 is connected, and a connecting pipe 415 is connected between the side of the air cushion 417 and the top of the sealing shaft 414. The connecting pipe 415 is made of hard plastic, a pressing block 420 is fixed on the right side of the upper pressure plate 4, a one-way valve 418 is installed on the front of the air cushion 417, the air cushion 417 is connected to the diverter plate 412 through the connecting pipe 415 and the sealing shaft 414, and the sealing shaft 414 and the connecting pipe 415 are rotatably connected. When the sheet metal punching machine is in use, the upper pressure plate 4 can be pressed downward, and the upper pressure plate 4 can drive the pressing block 420 to move when it is pressed. When the pressing block 420 moves to the upper surface of the air cushion 417, it can be pressed. The air cushion 417 can be deformed after being pressed, and the air cushion 417 can be deformed when it is deformed. The gas is transported to the inside of the diverter plate 412 through the connecting pipe 415 and the sealing shaft 414, and the diverter plate 412 diverts the transported gas and discharges it through the nozzle 413. When the upper pressure plate 4 moves downward, the cleaning rod 411 can rotate on the upper surface of the lower pressure plate 2, and the cleaning rod 411 can drive the diverter plate 412 to rotate when it rotates. When the diverter plate 412 rotates, it can rotate with the connecting pipe 415 through the sealing shaft 414. Therefore, the nozzle 413 can rotate with the cleaning rod 411, and the gas discharged when the nozzle 413 rotates can clean the debris and impurities on the upper surface of the lower pressure plate 2 In addition, when the upper pressure plate 4 is lifted upward after processing, the air cushion 417 can be reset by its own rubber material. When the air cushion 417 is reset, the air intake state can be changed by the one-way valve 418. The one-way valve 418 can improve the efficiency of gas recovery of the air cushion 417. The removed debris can fall into the inside of the recovery box 6 through the first notch 203, the second notch 204 and the through groove 419 for collection, or it can directly fall to the ground through the upper surface of the lower pressure plate 2. After the foreign debris is removed, the position displacement of the workpiece during the punching machine processing can be prevented, thereby improving the processing quality of the punching machine.

[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sheet metal punching machine with a material unloading anti-blocking structure, comprising a base (1), the upper surface of the base (1) is connected to a lower pressing plate (2) and a top frame (3), the bottom of the top frame (3) is connected to an upper pressing plate (4), a hydraulic cylinder (5) is installed on the top of the top frame (3), the upper pressing plate (4) is connected to the output end of the hydraulic cylinder (5), and the base (1) is internally connected to a recovery box (6). It is characterized by: A movable groove (201) is provided through the top of the lower pressing plate (2), and an adjusting mechanism for preventing material discharge from being blocked is provided inside the movable groove (201); An L-shaped rod (401) is fixed to the side of the upper pressing plate (4), and a rotating mechanism for cleaning the upper surface of the lower pressing plate (2) is provided on the side of the upper pressing plate (4); The adjusting mechanism comprises a movable block (202), and the movable block (202) is symmetrically connected to the inside of the movable groove (201). The side of the movable block (202) and the inner side of the lower pressure plate (2) are respectively penetrated with a first notch (203) and a second notch (204). Both ends of the movable block (202) are fixed with guide blocks (205). The guide blocks (205) penetrate and slide in the guide groove (206). The guide groove (206) is opened on the side of the movable groove (201). An internal block (207) is fixed in the movable groove (201). A placement groove (208) is opened on the side of the internal block (207). A motor (209) is installed in the placement groove (208). A first rotating block (210) is fixed to the output end of the motor (209). A first fixed block (211) is fixed on the side of the first rotating block (210); a second rotating block (212) is rotatably connected to the surface of the first fixed block (211); a rotating rod (213) is rotatably connected to the side of the internal block (207); a connecting block (214) is fixed to the right end of the rotating rod (213); a second fixed block (215) is fixed to the left side of the connecting block (214); the second fixed block (215) is rotatably connected to the other side of the second rotating block (212); a third rotating block (216) is symmetrically connected to the right side of the connecting block (214) in an upper and lower manner; the third rotating block (216) is rotatably connected to the connecting block (214); both ends of the third rotating block (216) are rotatably connected to a rotating shaft (217); and the rotating shaft (217) is fixed to the back of the movable block (202).

2. A sheet metal punching machine with a blanking anti-blocking structure according to claim 1, characterized in that: The rotating mechanism comprises a toothed plate (402), and the toothed plate (402) is fixed on the side of the L-shaped rod (401), the side of the toothed plate (402) is meshedly connected with a large gear (403), the back of the large gear (403) is installed with a one-way bearing (404), the back of the one-way bearing (404) is connected with a connecting rod (405), the connecting rod (405) rotates on the side of the lower pressure plate (2), a first bevel gear (406) is fixed on the surface of the connecting rod (405), the side of the first bevel gear (406) is meshedly connected with one end of a double-headed bevel gear rod (407), the double-headed bevel gear rod (407) passes through and rotates inside a first external block (408), the first external block (408) is fixed on the side of the lower pressure plate (2), and the other end of the double-headed bevel gear rod (407) is meshedly connected with a second bevel gear (409).

3. A sheet metal punching machine with a blanking anti-blocking structure according to claim 2, characterized in that: The second bevel gear (409) rotates through the second external block (410), the second external block (410) is fixed to the side of the lower pressure plate (2), a cleaning rod (411) is fixed to the top of the second bevel gear (409), and a through groove (419) is opened through the top of the lower pressure plate (2).

4. The sheet metal punching machine with a blanking anti-blocking structure according to claim 3, characterized in that: A diverter plate (412) is installed on the top of the cleaning rod (411), and a pressing mechanism for cleaning the upper surface of the lower pressing plate (2) is provided on the top of the cleaning rod (411).

5. The sheet metal punching machine with a blanking anti-blocking structure according to claim 4, characterized in that: The pressing mechanism comprises a nozzle (413), the side of the nozzle (413) being connected to the side of the diverter plate (412), and a plurality of groups of the nozzles (413) being arranged on the surface of the diverter plate (412).

6. The sheet metal punching machine with a blanking anti-blocking structure according to claim 5, characterized in that: A sealing shaft (414) is installed on the upper surface of the diverter plate (412), a third external connection block (416) is fixed on the right side of the lower pressure plate (2), and an air cushion (417) is connected to the upper surface of the third external connection block (416).

7. The sheet metal punching machine with a blanking anti-blocking structure according to claim 6, characterized in that: A connecting tube (415) is connected between the side of the air cushion (417) and the top of the sealing shaft (414); the connecting tube (415) is made of hard plastic. A pressing block (420) is fixed to the right side of the upper pressing plate (4).

8. The sheet metal punching machine with a blanking anti-blocking structure according to claim 7, characterized in that: A one-way valve (418) is installed at the front of the air cushion (417). The air cushion (417) is connected to the diverter plate (412) through a connecting pipe (415) and a sealing shaft (414). The sealing shaft (414) is rotatably connected to the connecting pipe (415).

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