A steel plate shearing machine with automatic positioning structure

Abstract

The utility model belongs to steel sheet processing technical field discloses a steel plate shearing machine with automatic positioning structure, this kind of steel plate shearing machine with automatic positioning structure includes work table, support, electric box, numerical control control unit, pressing structure, drive structure and positioning structure, the support is connected in work table, is used for supporting the component of steel plate machine, drive piece three are moved through transmission assembly rack, and the limiting assembly is pushed to the steel plate on work table, makes the steel plate gradually adjusts position and angle in the moving process, realizes the rotation fine adjustment, makes the opposite side of limiting assembly and steel plate can gradually stick together, corrects steel plate position, makes steel plate finally with blade parallel, greatly reduces the positioning deviation caused by human factor and machine vibration, significantly improves the precision and efficiency of steel plate positioning, effectively guarantees the steel plate size accuracy and shape regularity after shearing, greatly reduces the scrap rate.

Description

Technical Field

[0001] This utility model belongs to the field of steel plate processing technology, and in particular relates to a steel plate shearing machine with an automatic positioning structure. Background Technology

[0002] In the steel plate processing industry, shearing machines are a commonly used piece of equipment used to cut steel plates into the required size and shape. During the operation of the shearing machine, accurate positioning of the steel plate is the key to ensuring cutting precision.

[0003] Although existing shearing machines are equipped with a back gauge for positioning steel plates, in actual operation, the steel plates are manually pushed to align with the gauge. Due to the vibration generated during the operation of the shearing machine, it is difficult for the steel plates to be precisely aligned with the gauge, and slight tilting often occurs. This results in the steel plates being cut at an angle during the forward movement of the shearing machine, which seriously affects the dimensional accuracy and quality of the steel plates.

[0004] In other words, the existing positioning methods of shearing machines are affected by factors such as manual operation and equipment vibration, making it difficult to achieve accurate positioning of steel plates. This results in poor steel plate cutting accuracy and restricts production efficiency and product quality. Utility Model Content

[0005] The purpose of this utility model is to provide a steel plate shearing machine with an automatic positioning structure, so as to solve the problem that the positioning method of the existing shearing machine is affected by factors such as manual operation and equipment vibration, making it difficult to achieve accurate positioning of steel plates, resulting in poor steel plate cutting accuracy and restricting production efficiency and product quality.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model provides a steel plate shearing machine with an automatic positioning structure, which includes:

[0008] A workbench and a support, the support being connected to the workbench for supporting components of the steel plate machine;

[0009] An electrical box and a numerical control unit, both of which are connected to the bracket;

[0010] The pressing structure includes a cylinder, a pressing foot, and a foot switch. The cylinder is connected to the bracket, the pressing foot is connected to the cylinder, and the foot switch is connected to the CNC control unit.

[0011] The drive structure includes a blade, a first drive component, a back gauge device, a second drive component, and a hydraulic cylinder. The second drive component is connected to the hydraulic cylinder, the hydraulic cylinder is connected to the bracket, the blade is connected to the hydraulic cylinder, the first drive component is connected to the back gauge device, and the back gauge device is connected to the bracket.

[0012] Positioning structure: includes a third driving component, a transmission assembly, a first rack, and a limiting assembly. The third driving component is connected to the worktable, the transmission assembly is connected to the third driving component, the first rack meshes with the transmission assembly, and the limiting assembly is connected to the first rack.

[0013] As an optional technical solution for a steel plate shearing machine with an automatic positioning structure, it also includes a pressing structure, which comprises:

[0014] A fourth driving component and a first rotating shaft are provided. The fourth driving component is connected to the bracket and is used to drive the intermittent transmission assembly. The first rotating shaft is connected to the fourth driving component.

[0015] A sliding sleeve, connected to the bracket, is used to provide linear guidance for the limiting post;

[0016] A pressing plate and a limiting post, wherein the pressing plate is connected to the limiting post and is used to press the steel plate, and the limiting post is inserted into the sliding sleeve;

[0017] An intermittent transmission assembly includes a half gear and a rack, wherein the half gear is connected to the rotating shaft, the rack is connected to the limiting post, and the rack and the half gear mesh with each other.

[0018] As an optional technical solution for a steel plate shearing machine with an automatic positioning structure, the worktable is provided with an installation groove, and the drive component is inserted into the installation groove.

[0019] As an optional technical solution for a steel plate shearing machine with an automatic positioning structure, the limiting component includes:

[0020] The screw is connected to the rack and pinion and is used to connect to the limiting block;

[0021] A limiting block, sleeved on the screw, is used to push the steel plate;

[0022] A nut, connected to the screw, is used to fix the limiting block.

[0023] As an optional technical solution for a steel plate shearing machine with an automatic positioning structure, the transmission assembly includes:

[0024] A gear and a second rotating shaft, the second rotating shaft being connected to the third driving component for driving the gear, the gear being connected to the second rotating shaft.

[0025] As an optional technical solution for a steel plate shearing machine with an automatic positioning structure, the limiting block is provided with a protective layer to protect the steel plate.

[0026] Beneficial effects:

[0027] This utility model provides a steel plate shearing machine with an automatic positioning structure. The machine includes a worktable, a support frame, an electrical box, a CNC control unit, a pressing structure, a drive structure, and a positioning structure. The support frame is connected to the worktable and supports the components of the steel plate shearing machine. The electrical box and the CNC control unit are both connected to the support frame. The pressing structure includes a cylinder, a pressing foot, and a foot switch. The cylinder is connected to the support frame, the pressing foot is connected to the cylinder, and the foot switch is connected to the CNC control unit. The drive structure includes a blade, a first drive component, a back gauge device, a second drive component, and a hydraulic cylinder. The second drive component is connected to the hydraulic cylinder, which is connected to the support frame. The blade is connected to the hydraulic cylinder. The first drive component is connected to the back gauge device, which is connected to the support frame. The positioning structure... The structure includes a third driving component, a transmission assembly, a rack and pinion, and a limiting assembly. The third driving component is connected to the worktable, the transmission assembly is connected to the third driving component, the rack and pinion meshes with the transmission assembly, and the limiting assembly is connected to the rack and pinion. The third driving component drives the rack and pinion to move through the transmission assembly, and the rack and pinion then drives the limiting assembly to move. The limiting assembly pushes the steel plate on the worktable, so that the steel plate gradually adjusts its position and angle during the movement, achieving rotational adjustment. This allows the side of the limiting assembly and the steel plate opposite to each other to gradually fit together, correcting the position of the steel plate and making the steel plate parallel to the blade. This greatly reduces the positioning deviation caused by human factors and machine vibration, significantly improves the accuracy and efficiency of steel plate positioning, effectively ensures the dimensional accuracy and shape regularity of the steel plate after shearing, and greatly reduces the scrap rate. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a steel plate shearing machine with an automatic positioning structure provided in this embodiment of the utility model. Figure One ;

[0029] Figure 2 This is a schematic diagram of the structure of a steel plate shearing machine with an automatic positioning structure provided in this embodiment of the utility model. Figure Two ;

[0030] Figure 3 This is a schematic diagram of the structure of a steel plate shearing machine with an automatic positioning structure provided in this embodiment of the utility model. Figure Three ;

[0031] Figure 4 This is a schematic diagram of the structure of a steel plate shearing machine with an automatic positioning structure provided in this embodiment of the utility model. Figure Four ;

[0032] Figure 5 This is a schematic diagram of the pressing structure provided in this embodiment of the utility model. Figure One .

[0033] In the picture:

[0034] 1. Workbench; 2. Support; 3. Electrical box; 4. CNC control unit; 5. Cylinder; 6. Pressing foot; 7. Foot switch; 8. Blade; 9. Drive component one; 10. Back gauge device; 11. Drive component two; 12. Hydraulic cylinder; 13. Drive component three; 14. Rack one; 15. Drive component four; 16. Rotating shaft one; 17. Sliding sleeve; 18. Pressing plate; 19. Limiting post; 20. Half gear; 21. Rack two; 22. Screw; 23. Limiting block; 24. Nut; 25. Gear; 26. Rotating shaft two; 27. Protective layer; 28. Limiting strip. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] like Figures 1 to 5 As shown, this embodiment provides a steel plate shearing machine with an automatic positioning structure. This steel plate shearing machine includes a worktable 1, a support 2, an electrical box 3, a CNC control unit 4, a pressing structure, a drive structure, and a positioning structure. The support 2 is connected to the worktable 1 and supports the components of the steel plate shearing machine. The electrical box 3 and the CNC control unit 4 are both connected to the support 2. The pressing structure includes a cylinder 5, a pressing foot 6, and a foot switch 7. The cylinder 5 is connected to the support 2, the pressing foot 6 is connected to the cylinder 5, and the foot switch 7 is connected to the CNC control unit 4. The operator controls the movement of the cylinder 5 by pressing the foot switch 7, thereby controlling the pressing foot 6 to press down and lift. The drive structure includes a blade 8, a first drive component 9, a back gauge device 10, a second drive component 11, and a hydraulic cylinder 12. The second drive component 11 is connected to the hydraulic cylinder 12 and provides power to the hydraulic cylinder 12. The hydraulic cylinder 12 is connected to the support 2 and drives the blade 8 to perform shearing actions. The blade 8 is connected to the hydraulic cylinder 12 and is used for shearing... The steel plate is cut. A drive component 9 is connected to a back gauge device 10 to drive the back gauge device 10 to move. The back gauge device 10 is connected to a bracket 2 to determine the steel plate cutting size. The positioning structure includes a drive component 13, a transmission assembly, a rack 14, and a limiting assembly. The drive component 13 is connected to the worktable 1, the transmission assembly is connected to the drive component 13, the rack 14 meshes with the transmission assembly, and the limiting assembly is connected to the rack 14. The worktable 1 has a mounting slot, and the drive component 13 is inserted into the mounting slot. Inside, the limiting assembly includes a screw 22, a limiting block 23, and a nut 24. The screw 22 is connected to a rack 14 and is used to connect the limiting block 23. The limiting block 23 is sleeved on the screw 22 and is used to push the steel plate. The nut 24 is connected to the screw 22 and is used to fix the limiting block 23. The transmission assembly includes a gear 25 and a rotating shaft 26. The rotating shaft 26 is connected to a drive component 13 and is used to drive the gear 25. The gear 25 is connected to the rotating shaft 26. The limiting block 23 is provided with a protective layer 27 to protect the steel plate.

[0040] In use, first activate drive component 9, which moves the back gauge 10 to the position where the steel plate needs to be cut. Then, place the steel plate to be cut on the worktable 1, with the front end of the steel plate close to the back gauge 10. Next, activate drive component 3 13, which drives gear 25 to rotate via shaft 26. The rotation of gear 25 drives rack 14 to move. To ensure that rack 14 moves horizontally, a limit bar 28 is fixedly installed at the bottom of rack 14. A sliding groove is provided at the top of the workbench 1 where it is in contact with the steel plate. The limiting strip 28 is slidably installed in the sliding groove. When the rack 14 moves, it drives the limiting block 23 to move horizontally towards the steel plate. When the limiting block 23 touches the steel plate, the protective layer 27 buffers the collision between the steel plate and the limiting block 23, avoiding damage to the surface of the steel plate and wear on the limiting block 23. As the limiting block 23 pushes the steel plate to move, the position and angle of the steel plate are gradually adjusted during the movement. When the steel plate is in contact with one end of the limiting block 23, the steel plate and the limiting block 23 are in contact. When the blades 8 are parallel to each other at one end, the rotation of the drive component 13 stops, and the steel plate continues to move forward. At this time, the side of the steel plate is limited by the limiting block 23. When the steel plate is in contact with the back gauge 10, the foot switch 7 is pressed. The foot switch 7 controls the cylinder 5 to drive the pressing foot 6, so that the pressing foot 6 moves towards the worktable 1 to squeeze the steel plate and prevent the steel plate from shifting. Then, the drive component 11 is driven. The drive component 11 drives the blades 8 to cut the steel plate through the hydraulic cylinder 12. To cut a parallelogram-shaped steel plate, rotate nut 24 to separate it from limit block 23. Then, rotate limit block 23 on screw 22 so that the angle between limit block 23 and rack is the angle of the required oblique steel plate. Then, rotate nut 24 onto screw 22 and tighten it to prevent limit block 23 from loosening. At this time, the steel plate moves along limit block 23 at an angle when moving on worktable 1, so that the steel plate cut by blade 8 is a parallelogram shape, which meets the shape requirements of the steel plate.

[0041] Specifically, drive component 9 can be a servo motor or other power mechanism capable of driving the back gauge device 10; drive component 11 can be a hydraulic motor or other power mechanism capable of driving the hydraulic cylinder 12; and drive component 13 can be a motor or other component capable of driving the rotating shaft 26 to rotate. Drive component 13 is fixedly installed in the mounting groove, and the rotating shaft 26 is keyed to the output shaft of drive component 13. Gear 25 is fixedly sleeved on the outer surface of rotating shaft 26, and rack 14 meshes with the outer surface of gear 25. A limit strip 28 is fixedly installed at the bottom end of rack 14. A sliding groove is provided on the worktable 1, and the limit strip 28 is slidably installed on the limit strip 28. A screw 22 is fixedly installed on one side of the top end of the limit strip 28. The bottom of the outer surface of the screw 22 is a smooth section, and the top of the outer surface of the screw 22 has a threaded section. The limiting block 23 is movably sleeved on the smooth section of the screw 22. A nut 24 is threadedly connected to the threaded section of the screw 22. The nut 24 can be a horn nut 24, which allows the operator to directly rotate the nut 24. A protective layer 27 is fixedly installed on one side of the limiting block 23. The protective layer 27 can be a polyurethane rubber pad. The polyurethane material has compression and tear resistance properties. The CNC hydraulic shearing machine is an upgraded device that achieves automation and high-precision control by introducing a computer numerical control (CNC) system. Its working principle combines a hydraulic power system with digital control technology, and it can automatically complete plate positioning, shearing length setting, and angle... For complex operations such as degree adjustment, the hydraulic system includes a hydraulic pump station and a servo proportional valve. The hydraulic pump station provides the power source, driving a variable pump via a drive unit to adjust flow and pressure as needed, achieving energy efficiency. The servo proportional valve receives CNC commands and precisely controls the movement speed and pressure of the cylinder to achieve high-precision shearing. The CNC system includes a control unit, a human-machine interface (HMI), and a feedback system. The control unit integrates an industrial computer or PLC and has built-in programming functions for shearing parameters (length, angle, number of cuts, etc.). The HMI is a touch screen operation panel that supports parameter input, program calling, and real-time monitoring. The feedback system uses a linear scale or encoder to detect the position of the tool holder and the back gauge in real time. A closed-loop control system is formed. The hydraulic cylinder 12 is driven by a servo proportional valve, which has a fast response speed and smooth movement. The back gauge device 10 is driven by the drive component 9 or a motor, and automatically adjusts the plate positioning distance according to the program. The blade gap 8 can be automatically adjusted by the CNC system to adapt to different materials and thicknesses. The shearing machine also includes an automatic lubrication system, cylinder 5, and safety protection. The automatic lubrication system ensures the long-term stable operation of moving parts such as guide rails and blade holders. Cylinder 5 is driven by the drive component 9 to provide uniform pressure and fix the material. Safety protection includes infrared light grids, emergency stop buttons, etc., to prevent operators from accidentally entering dangerous areas. An automatic pushing device can be set at the rear end of the steel plate. The automatic pushing device is existing technology and will not be described in detail here.

[0042] In this embodiment, there are two sets of rack 14 and limiting components, with the racks located at both ends of the outer surface of gear 25. The operator inputs parameters such as sheet thickness, cutting length, and angle on the HMI, or calls a pre-stored program. The CNC system automatically calculates the tool holder stroke, back gauge position, and cutting pressure. Drive component 9 drives the back gauge to the set position with a positioning accuracy of ±0.1mm. The pressure foot 6 driven by cylinder 5 presses down quickly to fix the sheet and prevent it from shifting. The CNC sends a command, and the proportional valve precisely adjusts the oil supply of the cylinder to control the tool holder to descend at a uniform speed. Dynamic pressure compensation adjusts the cutting pressure in real time according to the sheet thickness to avoid overload or incomplete cutting. The grating ruler provides feedback to monitor the tool holder position in real time to ensure that the cutting depth is consistent with the program. After cutting, the blade 8 automatically returns to the origin, and the back gauge moves to the next cutting position to prepare for the next cycle. This supports continuous batch cutting and reduces manual intervention.

[0043] See Figure 4 and Figure 5 In this embodiment, a pressing structure is also included. The pressing structure includes a driving component 15, a rotating shaft 16, a sliding sleeve 17, a pressing plate 18, a limiting post 19, and an intermittent transmission assembly. The driving component 15 is connected to the bracket 2 and is used to drive the intermittent transmission assembly. The rotating shaft 16 is connected to the driving component 15. The sliding sleeve 17 is connected to the bracket 2 and is used to provide linear guidance for the limiting post 19. The pressing plate 18 is connected to the limiting post 19 and is used to press the steel plate. The limiting post 19 is inserted into the sliding sleeve 17. The intermittent transmission assembly includes a half gear 25 and a rack 21. The half gear 25 is connected to the rotating shaft 16, and the rack 21 is connected to the limiting post 19. The rack 21 and the half gear 25 mesh with each other. In order to collect the cut steel plate, a support table is placed at the rear end of the cutting machine.

[0044] The drive component 15 drives the rotating shaft 16 to rotate, which in turn drives the half gear 25 to rotate. The half gear 25 intermittently meshes with the rack 21. When the half gear 25 rotates and meshes with the rack 21, the half gear 25 pushes the rack 21 upward, thereby causing the limiting post 19 to move upward within the sliding sleeve 17. When the half gear 25 rotates and does not mesh with the rack 21, the rack 21 loses the push from the half gear 25, causing the limiting post 19 to be driven by gravity to press the pressing plate 18 towards the support table, thereby pressing the bent steel plate on the support table and restoring the steel plate to flatness.

[0045] In use, the drive unit 15 is activated, which drives the rotating shaft 16 to rotate. The rotation of the rotating shaft 16 causes the connected half gear 25 to rotate synchronously. The half gear 25 and the rack 21 form an intermittent meshing transmission relationship. When the half gear 25 rotates to the meshing area with the rack 21, the teeth of the half gear 25 push the rack 21. Since the rack 21 is connected to the limiting post 19, under the thrust of the half gear 25, the limiting post 19 moves upward along the sliding sleeve 17. At this time, the pressing plate 18 rises accordingly. When the half gear 25 rotates away from the meshing area with the rack 21, the rack 21 loses the thrust of the half gear 25. Under the action of its own gravity, the limiting post 19 and the pressing plate 18 move downward along the sliding sleeve 17. The pressing plate 18 moves towards the support table and applies pressure to the steel plate that has been cut and bent on the support table, so that the steel plate gradually returns to flatness under the pressure.

[0046] Specifically, limit posts 19 are fixedly installed at both ends of the pressing plate 18, and a support table is fixedly installed at the rear end of the shearing machine for collecting the cut steel plates. A limit plate is placed on the pressing plate 18, and sliding sleeves 17 are movably sleeved on the outer surface of the limit posts 19. Two sliding sleeves 17 are fixedly installed at the rear ends of both sides of the support frame. Two racks 21 are fixedly installed on the outer surface of the two limit posts 19. Half gears 25 are meshed on one side of each of the two racks 21. Half gears 25 are fixedly connected to rotating shaft 16. Four driving components 15 are fixedly installed at the rear ends of both sides of the bracket 2. The output shaft of the four driving components 15 is keyed to the corresponding rotating shaft 16. The four driving components 15 can be a motor or other component that can drive the rotating shaft 16 to rotate.

[0047] The following is a detailed description of the operation of a steel plate shearing machine with an automatic positioning structure:

[0048] In use, first activate drive component 9, which moves the back gauge 10 to the desired cutting position. Then, place the steel plate to be cut on the worktable 1, with the front end close to the back gauge 10. Next, activate drive component 3 13, which rotates gear 25 via shaft 26. Gear 25 rotates, causing rack 14 to move. To ensure horizontal movement of rack 14, a limit strip 28 is fixedly installed at the bottom of rack 14. A sliding groove is provided at the top of the worktable 1, and the limit strip 28 is slidably installed in the sliding groove. When the device is activated, the limiting block 23 moves horizontally towards the steel plate. When the limiting block 23 touches the steel plate, the protective layer 27 buffers the collision between the steel plate and the limiting block 23, preventing damage to the steel plate surface and wear on the limiting block 23. As the limiting block 23 pushes the steel plate, the steel plate gradually adjusts its position and angle during the movement. When one end of the steel plate is in contact with the limiting block 23, the steel plate and the opposite end of the blade 8 are parallel to each other. At this time, the rotation of the drive component 13 stops, and then the steel plate continues to be pushed forward. At this time, the side of the steel plate is limited by the limiting block 23. When the steel plate is in contact with the back gauge device 10, the foot switch 7 is pressed. 7. The control cylinder 5 drives the pressure foot 6, causing it to move towards the worktable 1 to compress the steel plate and prevent displacement. Then, it drives the second drive component 11, which in turn drives the blade 8 to cut the steel plate via the hydraulic cylinder 12. The cut steel plate slides onto the support table. Cutting the steel plate disrupts the internal stress balance, causing localized stress release and bending deformation. At this point, the fourth drive component 15 is activated, rotating the first shaft 16. The rotation of the first shaft 16 causes the connected half gear 25 to rotate synchronously. The half gear 25 and the second rack 21 form an intermittent meshing transmission relationship. When the half gear 25 rotates to… When the gear 25 is engaged with the rack 21, the teeth of the half gear 25 push the rack 21. Since the rack 21 is connected to the limiting post 19, the limiting post 19 moves upward along the sliding sleeve 17 under the thrust of the half gear 25. At this time, the pressing plate 18 rises accordingly. When the half gear 25 rotates away from the engagement area with the rack 21, the rack 21 loses the thrust of the half gear 25. The limiting post 19 and the pressing plate 18 move downward along the sliding sleeve 17 under their own weight. The pressing plate 18 moves toward the support table and applies pressure to the steel plate that has been cut and bent on the support table, so that the steel plate gradually returns to flatness under the pressure.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A steel plate shearing machine with an automatic positioning structure, characterized in that, include: A workbench (1) and a support (2), wherein the support (2) is connected to the workbench (1); The electrical box (3) and the numerical control control unit (4) are both connected to the bracket (2); The pressing structure includes a cylinder (5), a pressing foot (6) and a foot switch (7). The cylinder (5) is connected to the bracket (2), the pressing foot (6) is connected to the cylinder (5), and the foot switch (7) is connected to the CNC control unit (4). The drive structure includes a blade (8), a first drive component (9), a back gauge device (10), a second drive component (11), and a hydraulic cylinder (12). The second drive component (11) is connected to the hydraulic cylinder (12), the blade (8) is connected to the hydraulic cylinder (12), the first drive component (9) is connected to the back gauge device (10), and the back gauge device (10) is connected to the bracket (2). Positioning structure: includes a third driving component (13), a transmission assembly, a first rack (14) and a limiting assembly. The third driving component (13) is connected to the worktable (1), the transmission assembly is connected to the third driving component (13), the first rack (14) meshes with the transmission assembly, and the limiting assembly is connected to the first rack (14).

2. A steel plate shearing machine with an automatic positioning structure according to claim 1, characterized in that, It also includes a pressing structure, the pressing structure comprising: A drive component four (15) and a rotating shaft one (16), wherein the drive component four (15) is connected to the bracket (2) and is used to drive the intermittent transmission assembly, and the rotating shaft one (16) is connected to the drive component four (15); A sliding sleeve (17), connected to the bracket (2), is used to provide linear guidance for the limiting post (19); The pressing plate (18) and the limiting post (19) are connected to the limiting post (19) and are used to press the steel plate. The limiting post (19) is inserted into the sliding sleeve (17). An intermittent transmission assembly includes a half gear (25) and a rack (21), wherein the half gear (25) is connected to the rotating shaft (16), and the rack (21) is connected to the limiting post (19), and the rack (21) and the half gear (25) mesh with each other.

3. A steel plate shearing machine with an automatic positioning structure according to claim 2, characterized in that, The workbench (1) is provided with a mounting slot, and the drive component three (13) is inserted into the mounting slot.

4. A steel plate shearing machine with an automatic positioning structure according to claim 1, characterized in that, The limiting component includes: A screw (22) is connected to the rack (14) and is used to connect to the limiting block (23); The limiting block (23) is sleeved on the screw (22) and is used to push the steel plate; Nut (24), connected to the screw (22), is used to fix the limiting block (23).

5. A steel plate shearing machine with an automatic positioning structure according to claim 1, characterized in that, The transmission assembly includes: Gear (25) and shaft two (26), the shaft two (26) being connected to the driving component three (13) for driving gear (25), gear (25) being connected to shaft two (26).

6. A steel plate shearing machine with an automatic positioning structure according to claim 4, characterized in that, The limiting block (23) is provided with a protective layer (27) for protecting the steel plate.

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