Automatic calibration device for shearing precision of galvanized steel coil

Abstract

The utility model relates to the technical field of galvanized steel coil processing, and provides a galvanized steel coil shearing precision automatic calibration device which comprises a working table and a driving motor, and a guide structure is arranged at the top of the working table. According to the galvanized steel coil shearing device, the guide structure is arranged, under the guide effect of the fixing frame, the position of a steel coil can be prevented from deviating in the shearing process, under the effect of the guide roller, the friction force between the galvanized steel coil and the fixing frame is reduced, the servo motor is started, the servo motor drives the threaded rod to rotate in the groove, and shearing is achieved. The directions of threads at the two ends of a threaded rod are opposite, the threaded rod drives moving bases at the two ends of the threaded rod to move reversely, a sliding structure is formed through a fixing frame and a groove, the moving bases are prevented from rotating along with the threaded rod, the device can be suitable for galvanized steel coils with different widths by adjusting the distance between guide rollers, and the function that the device is convenient to calibrate is achieved; therefore, the applicability of the automatic calibration device for the shearing precision of the galvanized steel coil in use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of galvanized steel coil processing, in particular to an automatic calibration device for shearing accuracy of a galvanized steel coil. Background Art

[0002] Galvanized steel coils are made by immersing thin steel sheets in a molten zinc bath to adhere a layer of zinc to the surface. During processing, galvanized steel coils need to be sheared to meet different needs. To ensure the accurate position of the steel coils during the shearing process, thereby ensuring shearing quality and efficiency, an automatic calibration device for galvanized steel coil shearing accuracy is used.

[0003] To this end, the patent with announcement number CN219464895U discloses a steel coil shearing device, which relates to the field of steel coil processing equipment, including a mounting frame and a shearing table on one side of the mounting frame, a leveling roller is rotatably connected to the mounting frame, a fixed frame, a first knife groove and a second knife groove are provided on the shearing table, a hydraulic cylinder and a connecting frame are provided on the fixed frame, the hydraulic cylinder is connected to a mounting plate, a horizontal shearing knife is fixedly provided on the mounting plate and a vertical shearing knife is movably provided, the horizontal shearing knife and the vertical shearing knife are respectively matched with the first knife groove and the second knife groove, an electromagnetic plate is provided on the vertical shearing knife, a cylinder is provided on the connecting frame, and the cylinder is connected to a collection box; compared with the prior art, the present device does not require manual intervention to collect steel coil scraps, thereby reducing safety hazards, automatically completing the collection process of steel coil scraps generated during the assembly line shearing operation, and can cut steel coils of different widths at the same time;

[0004] Although the steel coil shearing device can cut steel coils of different widths when used, it is difficult to guide and prevent the position of the steel coil from shifting during the shearing process, which makes it less suitable for use. Utility Model Content

[0005] The utility model aims to provide an automatic calibration device for the shearing precision of a galvanized steel coil, so as to solve the defect of the existing automatic calibration device for the shearing precision of a galvanized steel coil that the device is inconvenient to guide.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a device for automatically calibrating the shearing accuracy of a galvanized steel coil, comprising a workbench and a drive motor;

[0007] The top of the workbench is provided with a guide structure, which includes a groove, a threaded rod, a movable seat, a servo motor, a fixed frame and a guide roller. The groove is opened on the top of the workbench, and a threaded rod is provided inside the groove. The outer sides of both ends of the threaded rod are threadedly connected to the movable seat, and the top of the movable seat is fixed with a fixed frame. A guide roller is provided on one side of the fixed frame. A servo motor is installed on the outer wall of the workbench at one end of the threaded rod;

[0008] A built-in cavity is provided on the top of the workbench on one side of the guide structure, a first pressing roller is provided inside the built-in cavity, a driving motor is installed on the outer wall of the workbench at one end of the first pressing roller, and a leveling structure is provided above the first pressing roller;

[0009] A shearing structure is fixed on the top of the workbench on the side of the guide structure away from the built-in cavity, and a moving structure is provided on the top of the workbench on the side of the shearing structure.

[0010] When using the device, by providing a guide structure, the device is easy to calibrate, thereby improving the applicability of the automatic calibration device for the shearing accuracy of galvanized steel coils when in use; by providing a leveling structure, the device is easy to level, thereby improving the convenience of the automatic calibration device for the shearing accuracy of galvanized steel coils when in use; by providing a shearing structure, the device is easy to shear, thereby improving the stability of the automatic calibration device for the shearing accuracy of galvanized steel coils when in use; by providing a moving structure, the device is easy to transport, thereby improving the work efficiency of the automatic calibration device for the shearing accuracy of galvanized steel coils when in use.

[0011] Preferably, the threads at both ends of the threaded rod are in opposite directions, one end of the threaded rod extends to the outside of the workbench and is fixedly connected to the output end of the servo motor, the top end of the fixed frame extends to the outside of the workbench, and the fixed frame and the workbench form a sliding structure through the groove. Under the guiding action of the fixed frame, the position of the steel coil can be prevented from being offset during the shearing process. Under the action of the guide roller, the friction between the galvanized steel coil and the fixed frame is reduced. The servo motor is started, and the servo motor drives the threaded rod to rotate inside the groove. Because the threads at both ends of the threaded rod have opposite directions, the threaded rod drives the movable seats at both ends to move in opposite directions. The sliding structure formed by the fixed frame and the groove prevents the movable seat from rotating with the threaded rod. By adjusting the spacing between the guide rollers, it can be applied to galvanized steel coils of different widths.

[0012] Preferably, one end of the first pressing roller extends to the outside of the workbench and is fixedly connected to the output end of the driving motor, and the other end of the first pressing roller extends to the outside of the workbench.

[0013] Preferably, the leveling structure includes a bracket, a first electric push rod, a chute, a slide plate, a fixed plate, a second pressure roller, and a vertical plate. The bracket is fixed above the first pressure roller at the top of the workbench. The first electric push rod runs through the top of the bracket. Slide plates are provided on both sides of the top of the bracket. Slide plates are provided inside the chute, and fixed plates are fixed between adjacent slide plates. Vertical plates are fixed on both sides of the bottom end of the fixed plate, and a second pressure roller is provided between adjacent vertical plates. One end of the galvanized steel coil is placed between the first pressure roller and the second pressure roller, and the drive motor is started. The drive motor drives the first pressure roller to rotate inside the built-in cavity. The first pressure roller drives the second pressure roller to rotate through the galvanized steel coil. Under the action of the first and second pressure rollers, the galvanized steel coil is conveniently leveled.

[0014] Preferably, the bottom end of the first electric push rod is fixedly connected to the top end of the fixed plate, the slide plate and the bracket form a sliding structure via a chute, and both ends of the second pressure roller extend into the interior of the vertical plate and form a rotating structure with the vertical plate. When the first electric push rod is activated, it drives the fixed plate to move, which in turn drives the slide plate to move within the chute. The action of the slide plate enhances the stability of the fixed plate during movement. The fixed plate drives the second pressure roller to move via the vertical plate, changing the spacing between the second pressure roller and the first pressure roller, thereby enabling the leveling of galvanized steel coils of varying thicknesses.

[0015] Preferably, the shearing structure includes a support, a second electric push rod, a slide rod, a lifting plate, a knife holder, a cutter, and a knife slot. The support is fixed to the top of the workbench, the top of the support is penetrated by the second electric push rod, the bottom end of the second electric push rod is fixed to the lifting plate, the interior of the support on both sides of the second electric push rod is penetrated by slide rods, the bottom end of the lifting plate is fixed to the knife holder, the bottom of the knife holder is mounted on the cutter, and the top of the workbench below the cutter is provided with a knife slot. When the second electric push rod is activated, the second electric push rod drives the lifting plate to move, and the lifting plate drives the slide rod to move within the support. Under the action of the slide rod, the stability of the lifting plate during movement is enhanced.

[0016] Preferably, the slide rod and the support form a sliding structure, and the bottom end of the slide rod is fixedly connected to the top end of the lifting plate. The lifting plate drives the cutter to move downward through the knife holder, so that the cutter cuts the flattened galvanized steel coil.

[0017] Preferably, the movable structure includes a conveyor belt, a movable trough, a first conveyor roller, a second conveyor roller, a first transmission wheel, a transmission belt, and a second transmission wheel. The movable trough is opened on the top of the workbench, and the conveyor belt is arranged inside the movable trough. The first conveyor roller is passed through one side of the conveyor belt, and the second conveyor roller is passed through the other side of the conveyor belt. One end of the second conveyor roller extends to the outside of the workbench and is fixed with the first transmission wheel. The second transmission wheel is provided on the outer wall of the workbench on one side of the first transmission wheel. The outer sides of the first and second transmission wheels are both covered with a transmission belt. When the first pressure roller rotates, the first pressure roller drives the second transmission wheel to rotate, and the second transmission wheel drives the first transmission wheel to rotate via the transmission belt. The first transmission wheel drives the second conveyor roller to rotate inside the movable trough.

[0018] Preferably, both ends of the first conveyor roller extend into the interior of the workbench and form a rotating structure with the workbench. One side of the second transmission wheel is fixedly connected to the end of the first pressure roller away from the drive motor. The second conveyor roller drives the first conveyor roller to rotate via the conveyor belt. Under the action of the conveyor belt, the sheared galvanized steel coil is conveniently conveyed and prevents blockage.

[0019] The advantages of the automatic calibration device for shearing accuracy of galvanized steel coils provided by the utility model are:

[0020] By providing a guide structure, the position of the steel coil can be prevented from being offset during the shearing process under the guidance of the fixed frame. Under the action of the guide roller, the friction between the galvanized steel coil and the fixed frame is reduced. The servo motor is started, and the servo motor drives the threaded rod to rotate inside the groove. The threads at both ends of the threaded rod are in opposite directions, and the threaded rod drives the movable seats at both ends to move in opposite directions. The fixed frame and the groove form a sliding structure, which prevents the movable seat from rotating with the threaded rod. By adjusting the spacing between the guide rollers, it can be applied to galvanized steel coils of different widths, realizing the function of facilitating calibration of the device, thereby improving the applicability of the automatic calibration device for galvanized steel coil shearing accuracy when in use.

[0021] By providing a leveling structure, one end of the galvanized steel coil is placed between the first pressing roller and the second pressing roller, and the driving motor is started. The driving motor drives the first pressing roller to rotate inside the built-in cavity, and the first pressing roller drives the second pressing roller to rotate through the galvanized steel coil. Under the action of the first pressing roller and the second pressing roller, the galvanized steel coil is conveniently leveled. The first electric push rod is started, and the first electric push rod drives the fixed plate to move, and the fixed plate drives the slide plate to move inside the slide groove. Under the action of the slide plate, the stability of the fixed plate during movement is enhanced, and the fixed plate drives the second pressing roller to move through the vertical plate, so that the distance between the second pressing roller and the first pressing roller is changed, so that galvanized steel coils of different thicknesses can be leveled, thereby realizing the function of the device to facilitate leveling, thereby improving the convenience of the automatic calibration device for shearing accuracy of galvanized steel coils when in use;

[0022] By providing a shearing structure, the second electric push rod is started, the second electric push rod drives the lifting plate to move, and the lifting plate drives the slide rod to move inside the support. Under the action of the slide rod, the stability of the lifting plate during movement is enhanced, and the lifting plate drives the cutter to move downward through the knife holder, so that the cutter cuts the flattened galvanized steel coil, realizing the function of facilitating shearing of the device, thereby improving the stability of the automatic calibration device for shearing precision of galvanized steel coils during use;

[0023] By providing a movable structure, when the first pressure roller rotates, the first pressure roller drives the second transmission wheel to rotate, the second transmission wheel drives the first transmission wheel to rotate through the transmission belt, the first transmission wheel drives the second conveying roller to rotate inside the movable groove, and the second conveying roller drives the first conveying roller to rotate through the conveyor belt. Under the action of the conveyor belt, the sheared galvanized steel coil is conveniently conveyed to prevent blockage, thereby realizing the function of facilitating conveying of the device, thereby improving the working efficiency of the automatic calibration device for shearing accuracy of galvanized steel coils when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0025] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the leveling structure section of the present utility model;

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of the guide structure section of the utility model;

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of the shear structure section of the utility model;

[0029] Figure 6 It is a schematic diagram of the top cross-sectional structure of the utility model.

[0030] Explanation of the reference numerals in the figure: 1. workbench; 2. guide structure; 201. groove; 202. threaded rod; 203. movable seat; 204. servo motor; 205. fixed frame; 206. guide roller; 3. drive motor; 4. first pressure roller; 5. built-in cavity; 6. leveling structure; 601. bracket; 602. first electric push rod; 603. slide; 604. slide plate; 605. fixed plate; 606. second pressure roller; 607. vertical plate; 7. shearing structure; 701. support; 702. second electric push rod; 703. slide rod; 704. lifting plate; 705. knife seat; 706. cutter; 707. knife groove; 8. movable structure; 801. conveyor belt; 802. movable groove; 803. first conveyor roller; 804. second conveyor roller; 805. first transmission wheel; 806. transmission belt; 807. second transmission wheel. DETAILED DESCRIPTION

[0031] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0032] See also Figures 1-6 The galvanized steel coil shearing precision automatic calibration device provided by the present invention includes a workbench 1 and a driving motor 3. A guide structure 2 is provided on the top of the workbench 1. The guide structure 2 includes a groove 201, a threaded rod 202, a movable seat 203, a servo motor 204, a fixed frame 205 and a guide roller 206. The groove 201 is opened at the top of the workbench 1, and a threaded rod 202 is provided inside the groove 201. The outer sides of both ends of the threaded rod 202 are threadedly connected to the movable seat 203, and the top of the movable seat 203 is fixed with a fixed frame 205. A guide roller 206 is provided on one side of the fixed frame 205. A servo motor 204 is installed on the outer wall of the workbench 1 at one end of the threaded rod 202. The threads at both ends of the threaded rod 202 are in opposite directions. One end of the threaded rod 202 extends to the outside of the workbench 1 and is fixedly connected to the output end of the servo motor 204. The top of the fixed frame 205 extends to the outside of the workbench 1, and the fixed frame 205 and the workbench 1 form a sliding structure through the groove 201.

[0033] Reference Figure 2 and Figure 4As shown, under the guiding action of the fixed frame 205, the position of the steel coil can be prevented from being offset during the shearing process. Under the action of the guide roller 206, the friction between the galvanized steel coil and the fixed frame 205 is reduced, and the servo motor 204 is started. The servo motor 204 drives the threaded rod 202 to rotate inside the groove 201. The threads at both ends of the threaded rod 202 are in opposite directions, and the threaded rod 202 drives the movable seats 203 at both ends to move in opposite directions. The fixed frame 205 and the groove 201 form a sliding structure to prevent the movable seat 203 from rotating with the threaded rod 202. By adjusting the spacing between the guide rollers 206, it can be suitable for galvanized steel coils of different widths.

[0034] A built-in cavity 5 is provided on the top of the workbench 1 on one side of the guide structure 2, and a first pressing roller 4 is provided inside the built-in cavity 5. A driving motor 3 is installed on the outer wall of the workbench 1 at one end of the first pressing roller 4. A leveling structure 6 is provided above the first pressing roller 4. The leveling structure 6 includes a bracket 601, a first electric push rod 602, a slide 603, a slide plate 604, a fixed plate 605, a second pressing roller 606 and a vertical plate 607. The bracket 601 is fixed above the first pressing roller 4 at the top of the workbench 1. The first electric push rod 602 runs through the top of the bracket 601. Slide grooves 603 are provided on both sides of the top of the bracket 601, and the interior of the slide groove 603 is provided with a There is a slide plate 604, and a fixed plate 605 is fixed between adjacent slide plates 604, vertical plates 607 are fixed on both sides of the bottom end of the fixed plate 605, and a second pressure roller 606 is arranged between adjacent vertical plates 607, the bottom end of the first electric push rod 602 is fixedly connected to the top end of the fixed plate 605, the slide plate 604 and the bracket 601 form a sliding structure through the slide groove 603, both ends of the second pressure roller 606 extend to the inside of the vertical plate 607 and form a rotating structure with the vertical plate 607, one end of the first pressure roller 4 extends to the outside of the workbench 1 and is fixedly connected to the output end of the drive motor 3, and the other end of the first pressure roller 4 extends to the outside of the workbench 1.

[0035] Reference Figure 2 and Figure 3 As shown, one end of the galvanized steel coil is placed between the first pressing roller 4 and the second pressing roller 606, and the drive motor 3 is started. The drive motor 3 drives the first pressing roller 4 to rotate inside the built-in cavity 5, and the first pressing roller 4 drives the second pressing roller 606 to rotate through the galvanized steel coil. Under the action of the first pressing roller 4 and the second pressing roller 606, the galvanized steel coil is conveniently leveled. The first electric push rod 602 is started, and the first electric push rod 602 drives the fixed plate 605 to move. The fixed plate 605 drives the slide plate 604 to move inside the slide groove 603. Under the action of the slide plate 604, the stability of the fixed plate 605 during movement is enhanced. The fixed plate 605 drives the second pressing roller 606 to move through the vertical plate 607, so that the distance between the second pressing roller 606 and the first pressing roller 4 changes, so that galvanized steel coils of different thicknesses can be leveled.

[0036] A shearing structure 7 is fixed to the top of the workbench 1 on the side of the guide structure 2 away from the built-in cavity 5. The shearing structure 7 includes a support 701, a second electric push rod 702, a slide bar 703, a lifting plate 704, a knife holder 705, a cutter 706 and a knife groove 707. The support 701 is fixed to the top of the workbench 1. The top of the support 701 is penetrated by the second electric push rod 702. The bottom end of the second electric push rod 702 is fixed with a lifting plate 704. The interior of the supports 701 on both sides of the second electric push rod 702 is penetrated by slide bars 703. The bottom end of the lifting plate 704 is fixed with a knife holder 705. The bottom of the knife holder 705 is installed with a cutter 706. A knife groove 707 is provided on the top of the workbench 1 below the cutter 706. The slide bar 703 and the support 701 constitute a sliding structure. The bottom end of the slide bar 703 is fixedly connected to the top of the lifting plate 704.

[0037] Reference Figure 2 and Figure 5 As shown, the second electric push rod 702 is started, and the second electric push rod 702 drives the lifting plate 704 to move, and the lifting plate 704 drives the slide bar 703 to move inside the support 701. Under the action of the slide bar 703, the stability of the lifting plate 704 during movement is enhanced. The lifting plate 704 drives the cutter 706 to move downward through the knife holder 705, so that the cutter 706 cuts the leveled galvanized steel coil.

[0038] A movable structure 8 is provided on the top of the workbench 1 on one side of the shearing structure 7. The movable structure 8 includes a conveyor belt 801, a movable groove 802, a first conveyor roller 803, a second conveyor roller 804, a first transmission wheel 805, a transmission belt 806 and a second transmission wheel 807. The movable groove 802 is opened on the top of the workbench 1, and the conveyor belt 801 is provided inside the movable groove 802. The first conveyor roller 803 passes through one side of the conveyor belt 801, and the second conveyor roller 804 passes through the other side of the conveyor belt 801. One end of the second conveyor roller 804 extends to the outside of the workbench 1 and is fixed with the first transmission wheel 805. The second transmission wheel 807 is provided on the outer wall of the workbench 1 on one side of the first transmission wheel 805. The outer sides of the first transmission wheel 805 and the second transmission wheel 807 are both sleeved with transmission belts 806. Both ends of the first conveyor roller 803 extend to the interior of the workbench 1 and form a rotating structure with the workbench 1. One side of the second transmission wheel 807 is fixedly connected to the end of the first pressure roller 4 away from the drive motor 3.

[0039] Reference Figure 2 and Figure 6As shown, when the first pressure roller 4 is rotating, the first pressure roller 4 drives the second transmission wheel 807 to rotate, the second transmission wheel 807 drives the first transmission wheel 805 to rotate through the transmission belt 806, the first transmission wheel 805 drives the second conveying roller 804 to rotate inside the movable groove 802, and the second conveying roller 804 drives the first conveying roller 803 to rotate through the conveyor belt 801. Under the action of the conveyor belt 801, the sheared galvanized steel coil is conveniently transported to prevent blockage.

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or 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 scope of protection of the present invention.

Claims

1. An automatic calibration device for shearing accuracy of galvanized steel coils, comprising a workbench (1) and a drive motor (3); Its characteristics are: A guide structure (2) is provided on the top of the workbench (1), and the guide structure (2) comprises a groove (201), a threaded rod (202), a movable seat (203), a servo motor (204), a fixed frame (205) and a guide roller (206); the groove (201) is opened on the top of the workbench (1); a threaded rod (202) is provided inside the groove (201); the outer sides of both ends of the threaded rod (202) are threadedly connected to the movable seat (203); the top of the movable seat (203) is fixed with a fixed frame (205); a guide roller (206) is provided on one side of the interior of the fixed frame (205); and a servo motor (204) is installed on the outer wall of the workbench (1) at one end of the threaded rod (202); A built-in cavity (5) is provided on the top of the workbench (1) on one side of the guide structure (2), a first pressing roller (4) is provided inside the built-in cavity (5), a driving motor (3) is installed on the outer wall of the workbench (1) at one end of the first pressing roller (4), and a leveling structure (6) is provided above the first pressing roller (4); A shearing structure (7) is fixed to the top of the workbench (1) on the side of the guide structure (2) away from the built-in cavity (5), and a moving structure (8) is provided on the top of the workbench (1) on the side of the shearing structure (7).

2. The automatic calibration device for shearing accuracy of galvanized steel coil according to claim 1, characterized in that: The threads at both ends of the threaded rod (202) are in opposite directions. One end of the threaded rod (202) extends to the outside of the workbench (1) and is fixedly connected to the output end of the servo motor (204). The top end of the fixed frame (205) extends to the outside of the workbench (1). The fixed frame (205) and the workbench (1) form a sliding structure through the groove (201).

3. The automatic calibration device for shearing accuracy of galvanized steel coil according to claim 1, characterized in that: One end of the first pressing roller (4) extends to the outside of the workbench (1) and is fixedly connected to the output end of the drive motor (3), and the other end of the first pressing roller (4) extends to the outside of the workbench (1).

4. The automatic calibration device for shearing accuracy of galvanized steel coil according to claim 1, characterized in that: The leveling structure (6) comprises a bracket (601), a first electric push rod (602), a slide (603), a slide plate (604), a fixed plate (605), a second pressure roller (606) and a vertical plate (607); the bracket (601) is fixed above the first pressure roller (4) at the top of the workbench (1); the top of the bracket (601) is penetrated by the first electric push rod (602); slide grooves (603) are provided on both sides of the top of the bracket (601); slide plates (604) are provided inside the slide grooves (603); and fixed plates (605) are fixed between adjacent slide plates (604); vertical plates (607) are fixed on both sides of the bottom end of the fixed plate (605); and a second pressure roller (606) is provided between adjacent vertical plates (607).

5. The automatic calibration device for shearing accuracy of galvanized steel coil according to claim 4, characterized in that: The bottom end of the first electric push rod (602) is fixedly connected to the top end of the fixed plate (605), the slide plate (604) and the bracket (601) form a sliding structure through the slide groove (603), and both ends of the second pressure roller (606) extend to the inside of the vertical plate (607) and form a rotating structure with the vertical plate (607).

6. The automatic calibration device for shearing accuracy of galvanized steel coil according to claim 1, characterized in that: The shearing structure (7) comprises a support (701), a second electric push rod (702), a slide bar (703), a lifting plate (704), a knife seat (705), a cutter (706) and a knife groove (707); the support (701) is fixed to the top of the workbench (1); the top of the support (701) is penetrated by the second electric push rod (702); the bottom end of the second electric push rod (702) is fixed with a lifting plate (704); the interiors of the supports (701) on both sides of the second electric push rod (702) are penetrated by slide bars (703); the bottom end of the lifting plate (704) is fixed with a knife seat (705); the bottom of the knife seat (705) is installed with a cutter (706); and a knife groove (707) is provided on the top of the workbench (1) below the cutter (706).

7. The automatic calibration device for shearing accuracy of galvanized steel coil according to claim 6, characterized in that: The sliding rod (703) and the support (701) form a sliding structure, and the bottom end of the sliding rod (703) is fixedly connected to the top end of the lifting plate (704).

8. The automatic calibration device for shearing accuracy of galvanized steel coil according to claim 3, characterized in that: The movable structure (8) comprises a conveyor belt (801), a movable groove (802), a first conveyor roller (803), a second conveyor roller (804), a first transmission wheel (805), a transmission belt (806) and a second transmission wheel (807); the movable groove (802) is opened on the top of the workbench (1); a conveyor belt (801) is arranged inside the movable groove (802); the first conveyor roller (803) passes through one side of the conveyor belt (801); the second conveyor roller (804) passes through the other side of the conveyor belt (801); one end of the second conveyor roller (804) extends to the outside of the workbench (1) and is fixed with the first transmission wheel (805); a second transmission wheel (807) is arranged on the outer wall of the workbench (1) on one side of the first transmission wheel (805); and the outer sides of the first transmission wheel (805) and the second transmission wheel (807) are both sleeved with transmission belts (806).

9. The automatic calibration device for shearing accuracy of galvanized steel coil according to claim 8, characterized in that: Both ends of the first conveying roller (803) extend into the interior of the workbench (1) and form a rotating structure with the workbench (1), and one side of the second transmission wheel (807) is fixedly connected to the end of the first pressing roller (4) away from the driving motor (3).

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