Device and method for preventing galvanized sheet from sticking to roller

Abstract

The present application relates to a device and method for preventing galvanized sheet metal from sticking to rollers, belonging to the technical field of galvanized sheet metal processing. The device comprises an intermittent lifting assembly located on one side of a conveyor roller and used to intermittently lift the steel sheet to reduce the force between the steel sheet and the conveyor roller. A rotating shaft is coaxially connected to the conveyor roller, and a plurality of extrusion rods located inside the conveyor roller are fixed to the rotating shaft. The roller surface of the conveyor roller is provided with a plurality of movable holes circumferentially, and a movable plate is slidably connected to the movable hole. The surface of the movable plate located inside the conveyor roller is fixed with a force-bearing column for squeezing by the corresponding extrusion rods. The inner wall of the conveyor roller is provided with a plurality of reset assemblies for driving the corresponding movable plates to reset. When the movable plates are in the reset state, the outer surface of the movable plates is coplanar with the outer surface of the conveyor roller. The conveyor roller is provided with a drive assembly for driving the rotating shaft to rotate back and forth. The present application has the effect of preventing the occurrence of roller sticking and ensuring the continuity of the production process.

Description

Technical Field

[0001] The present application relates to the technical field of galvanized sheet processing, and in particular to a device and method for preventing galvanized sheet from sticking to rollers. Background Art

[0002] Galvanized steel refers to steel sheets coated with a layer of zinc. Galvanizing is a commonly used, economical and effective method for rust prevention, with about half of the world's zinc production being used in this process.

[0003] Existing galvanized steel production mainly uses the hot-dip galvanizing process, which involves immersing thin steel sheets in a bath of molten zinc to form a thin layer of zinc on the surface. Currently, the main production method is the continuous galvanizing process, which involves continuously immersing coiled steel sheets in a bath of molten zinc to produce the galvanized steel sheets.

[0004] In the hot-dip galvanizing production line, the steel sheets extracted from the zinc tank are continuously conveyed through multiple conveyor rollers. However, the softer zinc (alloy) will partially fill the rough surface of the rollers, causing the roller to stick. This causes the thin steel sheets to adhere to the rollers and rotate with them, making them unable to be fed into the next process, seriously affecting the continuous production process. Summary of the Invention

[0005] In order to avoid the roller sticking phenomenon and ensure the continuity of the production process, the present application provides a device and method for preventing galvanized sheet metal from sticking to the roller.

[0006] In the first aspect, the present application provides a device for preventing galvanized sheet from sticking to the roller, which adopts the following technical solution:

[0007] A device for preventing galvanized sheet metal from sticking to a roller comprises an intermittent lifting assembly, which is located on one side of a conveying roller and is used for intermittently lifting the steel plate to reduce the force between the steel plate and the conveying roller; a rotating shaft is coaxially connected to the conveying roller, a plurality of extrusion rods located inside the conveying roller are fixed on the rotating shaft, a plurality of movable holes are circumferentially opened on the roller surface of the conveying roller, a movable plate is slidably connected in the movable hole, a surface of the movable plate located inside the conveying roller is fixed with a force-bearing column for being squeezed by the corresponding extrusion rod, a plurality of reset assemblies for driving the corresponding movable plates to reset are provided on the inner wall of the conveying roller, when the movable plate is in the reset state, the outer surface of the movable plate is coplanar with the outer surface of the conveying roller, and a driving assembly for driving the rotating shaft to rotate back and forth is provided in the conveying roller.

[0008] By adopting the above technical solution, when the steel plate leached from the zinc tank passes through the conveying roller, the intermittent lifting component is started to lift the steel plate intermittently, thereby reducing the force between the steel plate and the conveying roller and reducing the probability of the steel plate adhering to the conveying roller. At the same time, the driving component is started, and the driving component drives the rotating shaft to rotate. The rotating shaft drives all the extrusion rods to rotate and squeeze all the force-bearing columns, so that the outer surfaces of the movable plates used protrude from the outer surface of the conveying roller at the same time, preventing the steel plate from adhering to the conveying roller. The driving component then drives the rotating shaft to reverse, and the extrusion rods are separated from the force-bearing columns. At the same time, the reset component drives the movable plate to reset. This reciprocating cycle can avoid the roller sticking phenomenon and ensure the continuity of the production process.

[0009] Optionally, the end of the force-bearing column away from the movable plate is arranged in an arc shape, and an arc-shaped extrusion block is fixed to the end of the extrusion rod away from the rotating shaft and toward the extrusion position of the force-bearing column.

[0010] By adopting the above technical solution, when the extrusion rod rotates, the arc-shaped extrusion block squeezes the arc end of the load-bearing column, reducing the wear between the extrusion rod and the load-bearing column, and enabling the extrusion movement of the load-bearing column to be smoother, thereby improving the movement efficiency of the movable plate.

[0011] Optionally, the reset assembly includes a connecting plate and a reset spring, the connecting plate is fixed on the side wall of the corresponding force-bearing column, and the reset spring is fixed between the connecting plate and the inner wall of the conveying roller; when the reset spring is in a natural state, the outer surface of the movable plate is coplanar with the outer surface of the conveying roller.

[0012] By adopting the above technical solution, when the extrusion rod squeezes the force-bearing column, the return spring is compressed. When the extrusion rod separates from the force-bearing column, the rebound force of the return spring drives the connecting plate and the force-bearing column to move inward, thereby driving the movable plate to move inward, thereby improving the reset efficiency of the movable plate.

[0013] Optionally, the extrusion blocks are all magnets, the force-bearing columns are made of metal, and the extrusion blocks and the force-bearing columns are tightly attracted after contacting each other.

[0014] By adopting the above technical solution, when the extrusion rod rotates to squeeze the load-bearing column, the extrusion block and the load-bearing column are tightly sucked together, which can make the movement of the load-bearing column when being squeezed more stable, and can make the expansion and contraction of the spring more stable, reducing inertia.

[0015] Optionally, when the extrusion rod is reversed to drive the extrusion block to separate from the force-bearing column, the return spring is stretched, and after the extrusion block is separated from the force-bearing column, the return spring retracts and resets.

[0016] By adopting the above technical solution, since the extrusion block and the force-bearing column are in a sucked state, when the extrusion block is separated from the force-bearing column, the force-bearing column will be sucked to move, so that the reset spring will be stretched. At this time, the outer surface of the movable plate enters the movable hole, and a groove is formed on the outer surface of the rotating roller, which can avoid adhesion between the steel plate and the outer surface of the movable plate. After the extrusion block is completely separated from the force-bearing column, the reset spring drives the movable plate to reset, further avoiding the phenomenon of steel plate sticking to the roller, so as to ensure the continuity of the production process.

[0017] Optionally, the driving assembly includes a connecting rod and a driving cylinder, the connecting rod is fixed on the circumferential side wall of the rotating shaft, and the driving cylinder is hinged between the connecting rod and the inner wall of the conveying roller.

[0018] By adopting the above technical solution, the driving cylinder is started to extend and retract, thereby pushing the connecting rod to rotate, so that the rotating shaft rotates, thereby improving the rotation efficiency of all extrusion rods.

[0019] Optionally, a limit rod for limiting the rotation angle of the connecting rod is fixed to the inner wall of the conveying roller, and the extrusion rod squeezes the force column so that when the outer surface of the movable plate protrudes from the outer surface of the conveying roller, the limit rod contacts the connecting rod.

[0020] By adopting the above technical solution, the setting of the limit rod can limit the maximum rotation angle of the connecting rod. When the connecting rod rotates to contact the limit rod, the extrusion rod is in an extrusion state on the load-bearing column, which can prevent the extrusion rod from rotating excessively and detaching from the extrusion rod, thereby improving the working stability of the device.

[0021] Optionally, the intermittent lifting assembly includes a motor, a rotating rod and a lifting plate. The motor is installed on the galvanizing production line and is located on one side of the conveying roller. The motor output shaft and the rotating shaft are parallel to each other, and the rotation direction of the motor output shaft is consistent with the conveying direction of the steel plate. The rotating rod is vertically fixed on the motor output shaft, and the lifting plate is fixed at the end of the rotating rod away from the motor output shaft. After the lifting plate rotates until it contacts the steel plate, the contact area between the steel plate and the conveying roller is reduced.

[0022] By adopting the above technical solution, the motor is started to make the rotating rod drive the lifting plate to rotate. When the lifting plate rotates to the steel plate, it pushes the steel plate to lift it, so that the contact area between the steel plate and the conveying roller is reduced, and the force generated by the steel plate is borne, thereby reducing the force between the steel plate and the conveying roller, further avoiding the roller sticking phenomenon, and the lifting plate always rotates in the conveying direction of the steel plate during the pushing process of the steel plate. Not only does it not affect the transmission due to the reduction of the contact area between the steel plate and the conveying roller, but it improves the transmission efficiency of the steel plate.

[0023] Optionally, there are two groups of intermittent lifting components, which are located on different sides of the conveying roller. When one group of lifting plates is in contact with the steel plate, the other group of lifting plates is located farthest from the steel plate.

[0024] By adopting the above technical solution, the lifting plates on both sides of the conveying roller lift the steel plates in an alternating manner, which can not only increase the lifting frequency but also convey the steel plates more stably.

[0025] In a second aspect, the present application provides a method for preventing galvanized sheet from sticking to the roller, which adopts the following technical solution:

[0026] The method for preventing galvanized sheet from sticking to rollers comprises the following steps:

[0027] S1. When the steel plate leached from the zinc tank passes through the conveyor roller, the driving assembly drives the rotating shaft to rotate, and the rotating shaft drives the extrusion rod to squeeze the load-bearing column, so that the moving plate protrudes from the outer surface of the conveyor roller to prevent the steel plate from adhering to the outer surface of the conveyor roller;

[0028] S2, the driving assembly then drives the rotating shaft to reverse, the extrusion rod and the force-bearing column gradually separate, the reset assembly drives the movable plate to move into the conveyor roller, the extrusion block sucks the force-bearing column to stretch the reset spring, and the outer surface of the movable plate moves to the inside of the movable hole to prevent the steel plate from adhering to the outer surface of the movable plate. After the extrusion block and the force-bearing column separate, the reset assembly drives the movable plate to reset until the outer surface is coplanar with the outer surface of the conveyor roller;

[0029] S3. Simultaneously start the motors of the two sets of intermittent lifting components, so that the two sets of lifting plates lift the steel plate alternately, and reduce the force between the steel plate and the conveying roller at multiple frequencies.

[0030] By adopting the above technical solution, the driving component drives the rotating shaft to rotate, and the rotating shaft drives the extrusion rod to squeeze the force column, so that the movable plate protrudes from the outer surface of the conveying roller. When the driving component drives the rotating shaft to reverse, the movable plate can be recessed into the outer surface of the conveying roller, which can avoid the outer surface of the conveying roller from sticking to the steel plate, and can also avoid the outer surface of the movable plate from sticking to the steel plate; at the same time, the intermittent lifting component lifts the steel plate at multiple frequencies, further avoiding the roller sticking phenomenon and ensuring the continuity of the production process.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. When the steel plate leached from the zinc bath passes through the conveyor roller, the intermittent lifting assembly is activated to reduce the force between the steel plate and the conveyor roller. At the same time, the driving assembly drives the rotating shaft to rotate so that the outer surface of the moving plate protrudes from the outer surface of the conveyor roller, preventing the steel plate from adhering to the conveyor roller. This can avoid the roller sticking phenomenon and ensure the continuity of the production process.

[0033] 2. When the extrusion block separates from the load-bearing column, it will suck the load-bearing column to move, so that the reset spring will be stretched. At this time, the outer surface of the movable plate enters the movable hole, which can prevent the steel plate from sticking to the outer surface of the movable plate, further avoiding the phenomenon of steel plate sticking to the roller, thereby ensuring the continuity of the production process;

[0034] 3. Start the motor to make the rotating rod drive the lifting plate to rotate. When the lifting plate rotates to the steel plate, it pushes the steel plate to lift it, reducing the force between the steel plate and the conveying roller. The lifting plate always rotates in the conveying direction of the steel plate during the pushing process of the steel plate. Not only does it not affect the transmission due to the reduction of the contact area between the steel plate and the conveying roller, but it improves the transmission efficiency of the steel plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural diagram of an embodiment of the present application;

[0036] Figure 2 This is a cross-sectional view showing the internal structure of the conveyor roller.

[0037] Explanation of the accompanying drawings: 1. Intermittent lifting assembly; 11. Motor; 12. Turning rod; 13. Lifting plate; 2. Steel plate; 3. Conveying roller; 31. Moving hole; 4. Rotating shaft; 41. Extrusion rod; 42. Extrusion block; 5. Moving plate; 51. Force column; 6. Reset assembly; 61. Connecting plate; 62. Reset spring; 7. Driving assembly; 71. Connecting rod; 72. Driving cylinder; 8. Limiting rod. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-2 This application is described in further detail.

[0039] The embodiment of the present application discloses a device for preventing galvanized sheet metal from sticking to a roller.

[0040] refer to Figure 1 The galvanizing production line includes a conveying roller 3 located at the back process of the zinc tank. The conveying roller 3 is rotatably connected to a certain frame, and the conveying roller 3 conveys the steel plate 2 leached from the zinc tank.

[0041] refer to Figure 1 The device for preventing the galvanized sheet from sticking to the roller includes two groups of intermittent lifting components 1 located on opposite sides of the conveying roller 3. The intermittent lifting components 1 are used to intermittently lift the steel plate 2 to reduce the interaction force between the steel plate 2 and the conveying roller 3.

[0042] The intermittent lifting assembly 1 includes a motor 11 installed on a frame and parallel to the conveying roller 3, a rotating rod 12 vertically fixed on the output shaft of the motor 11, and a lifting plate 13 fixed on the end of the rotating rod 12 away from the motor 11. The rotation direction of the output shaft of the motor 11 is consistent with the conveying direction of the steel plate 2. The length direction of the lifting plate 13 is perpendicular to the conveying direction of the steel plate 2, and the contact surface between the lifting plate 13 and the steel plate 2 is an arc surface. After the lifting plate 13 contacts the steel plate 2 and lifts the steel plate 2, the contact area between the steel plate 2 and the conveying roller 3 is reduced; the angle between the rotating rods 12 in the two groups of intermittent lifting assemblies 1 is always 180°, that is, when one of the lifting plates 13 contacts the steel plate 2, the other lifting plate 13 is located at the farthest distance from the steel plate 2.

[0043] When the steel plate 2 after leaching from the zinc tank is conveyed on the conveying roller 3, the intermittent lifting component 1 intermittently lifts the steel plate 2 to reduce the force between the steel plate 2 and the conveying roller 3, and preliminarily prevents the steel plate 2 from sticking to the roller; and the lifting plate 13 always rotates in the conveying direction of the steel plate 2 during the pushing process of the steel plate 2, which improves the conveying efficiency of the steel plate 2. The two lifting plates 13 are staggered to lift, which increases the lifting frequency of the steel plate 2.

[0044] refer to Figure 1 and Figure 2 The conveying roller 3 has an internal hollow structure, and the conveying roller 3 is coaxially connected to the rotating shaft 4, and a number of extrusion rods 41 are fixed circumferentially on the rotating shaft 4; a number of long strip-shaped moving holes 31 are opened circumferentially on the roller surface of the conveying roller 3, and a moving plate 5 is slidably connected in each moving hole 31. A force-bearing column 51 is fixed on the surface of the moving plate 5 located inside the conveying roller 3, and an arc-shaped extrusion block 42 is fixed on the side of the extrusion rod 41 away from the rotating shaft 4 and toward the corresponding force column 51. The inner end of the force column 51 away from the moving plate 5 is arc-shaped and is squeezed by the extrusion block 42; a number of groups of reset components 6 are provided in the conveying roller 3 for driving the corresponding moving plate 5 to reset. When the moving plate 5 is reset to the initial state, the outer surface of the moving plate 5 is coplanar with the outer surface of the conveying roller 3; a driving component 7 is provided in the conveying roller 3 for driving the rotating shaft 4 to rotate reciprocally.

[0045] The driving component 7 drives the rotating shaft 4 to rotate, and the rotating shaft 4 drives the extrusion rod 41 to rotate so that the extrusion block 42 squeezes the force-bearing column 51. The movable plate 5 protrudes from the outer surface of the conveying roller 3, which can prevent the steel plate 2 from adhering to the outer surface of the conveying roller 3. The driving component 7 then drives the rotating shaft 4 to reverse, and the reset component 6 drives the movable plate 5 to reset for normal transmission. This reciprocating motion can avoid the roller sticking phenomenon and ensure the continuity of the production process.

[0046] refer to Figure 2The reset assembly 6 includes connecting plates 61 fixed on both sides of the force-bearing column 51, and a reset spring 62 fixed between the corresponding connecting plates 61 and the inner wall of the conveying roller 3. When the reset spring 62 is in a natural state, the outer surface of the movable plate 5 is coplanar with the outer surface of the conveying roller 3; the extrusion block 42 is made of a strong magnet, and the force-bearing column 51 is made of a metal that can be attracted by the magnet, such as iron, steel, etc.; when the extrusion block 42 is separated from the tightened force column 51, the reset spring 62 is driven to stretch, so that the outer surface of the movable plate 5 enters the interior of the movable hole 31, avoiding adhesion of the steel plate 2 to the outer surface of the movable plate 5. After the extrusion block 42 is separated from the force-bearing column 51, the reset spring 62 drives the movable plate 5 to reset, further avoiding the occurrence of roller sticking.

[0047] refer to Figure 2 The driving assembly 7 includes a connecting rod 71 vertically fixed on the circumferential side wall of the rotating shaft 4, and a driving cylinder 72 hinged between the end of the connecting rod 71 away from the rotating shaft 4 and the inner wall of the conveying roller 3. In this embodiment, the driving cylinder 72 is an electric cylinder; a limiting rod 8 for limiting the rotation angle of the connecting rod 71 is fixed to the inner wall of the conveying roller 3; when the extrusion block 42 squeezes the load-bearing column 51 until the load-bearing column 51 moves to the maximum distance, the connecting rod 71 contacts the limiting rod 8.

[0048] Starting the drive cylinder 72 can push the connecting rod 71 to rotate, thereby improving the reciprocating rotation efficiency of the rotating shaft 4. In addition, the limiting rod 8 limits the connecting rod 71, thereby preventing the extrusion rod 41 from rotating excessively and disengaging from the extrusion rod 41, thereby improving the working stability of the device.

[0049] The implementation principle of the device for preventing galvanized sheet from sticking to the roller in the embodiment of the present application is as follows: when the steel plate 2 after leaching from the zinc tank is conveyed on the conveying roller 3, the intermittent lifting component 1 intermittently lifts the steel plate 2 to reduce the force between the steel plate 2 and the conveying roller 3, thereby preliminarily preventing the steel plate 2 from sticking to the roller; at the same time, the driving cylinder 72 drives the rotating shaft 4 to rotate, and the rotating shaft 4 drives the extrusion rod 41 to rotate so that the extrusion block 42 squeezes the force column 51, and the movable plate 5 protrudes from the outer surface of the conveying roller 3, which can prevent the steel plate 2 from adhering to the outer surface of the conveying roller 3. The driving cylinder 72 then drives the rotating shaft 4 to reverse, which can make the movable plate 5 recessed into the outer surface of the conveying roller 3, which can prevent the outer surface of the movable plate 5 from adhering to the steel plate 2. This reciprocating process can avoid the sticking to the roller, thereby ensuring the continuity of the production process.

[0050] The embodiment of the present application also discloses a method for preventing galvanized sheet from sticking to the roller.

[0051] The method for preventing galvanized sheet from sticking to rollers comprises the following steps:

[0052] S1. When the steel plate 2 leached from the zinc bath passes through the conveying roller 3, the driving cylinder 72 pushes the connecting rod 71 to rotate, and the rotating shaft 4 drives the squeezing rod 41 to squeeze the force-bearing column 51, so that the movable plate 5 protrudes from the outer surface of the conveying roller 3, preventing the steel plate 2 from adhering to the outer surface of the conveying roller 3;

[0053] S2, then drive cylinder 72 and drive rotating shaft 4 to reverse, squeeze rod 41 and force column 51 gradually separate, reset assembly 6 drives movable plate 5 to move into conveying roller 3, squeeze block 42 sucks force column 51 to stretch reset spring 62, outer surface of movable plate 5 moves to the inside of movable hole 31, prevents steel plate 2 from adhering to outer surface of movable plate 5, squeeze block 42 and force column 51 separate, reset assembly 6 drives movable plate 5 to reset until outer surface is coplanar with outer surface of conveying roller 3;

[0054] S3. Simultaneously start the motors 11 of the two sets of intermittent lifting assemblies 1, so that the two sets of lifting plates 13 lift the steel plate 2 alternately, and reduce the force between the steel plate 2 and the conveying roller 3 multiple times.

[0055] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A device for preventing galvanized sheet from sticking to rollers, characterized by: The invention comprises an intermittent lifting assembly (1) which is located on one side of a conveying roller (3) and is used for intermittently lifting a steel plate (2) to reduce the force between the steel plate (2) and the conveying roller (3); a rotating shaft (4) is coaxially connected to the conveying roller (3); a plurality of extrusion rods (41) located inside the conveying roller (3) are fixed on the rotating shaft (4); a plurality of moving holes (31) are opened circumferentially on the roller surface of the conveying roller (3); a moving plate (5) is slidably connected in the moving hole (31); the moving plate (5) is located on the surface of the conveying roller (3) A force-bearing column (51) for being squeezed by a corresponding squeezing rod (41) is fixed on the surface, and the rotating shaft (4) drives the squeezing rod (41) to squeeze the force-bearing column (51), so that the movable plate (5) protrudes from the outer surface of the conveying roller (3). The inner wall of the conveying roller (3) is provided with a plurality of reset components (6) for driving the corresponding movable plates (5) to reset. When the movable plate (5) is in the reset state, the outer surface of the movable plate (5) is coplanar with the outer surface of the conveying roller (3). A driving component (7) for driving the rotating shaft (4) to rotate back and forth is provided inside the conveying roller (3); The end of the force-bearing column (51) away from the movable plate (5) is arranged in an arc shape, and an arc-shaped extrusion block (42) is fixed on the end of the extrusion rod (41) away from the rotating shaft (4) and toward the extrusion position of the force-bearing column (51); The reset assembly (6) includes a connecting plate (61) and a reset spring (62), wherein the connecting plate (61) is fixed on the side wall of the corresponding force-bearing column (51), and the reset spring (62) is fixed between the connecting plate (61) and the inner wall of the conveying roller (3); when the reset spring (62) is in a natural state, the outer surface of the movable plate (5) and the outer surface of the conveying roller (3) are coplanar; The extrusion blocks (42) are all magnets, the force-bearing columns (51) are made of metal, and the extrusion blocks (42) and the force-bearing columns (51) are tightly attracted after contacting each other; When the extrusion rod (41) reverses and drives the extrusion block (42) to separate from the force-bearing column (51), the return spring (62) is stretched. After the extrusion block (42) separates from the force-bearing column (51), the return spring (62) retracts and resets.

2. The device for preventing galvanized sheet from sticking to the roller according to claim 1, characterized in that: The driving assembly (7) comprises a connecting rod (71) and a driving cylinder (72), wherein the connecting rod (71) is fixed on the circumferential side wall of the rotating shaft (4), and the driving cylinder (72) is hinged between the connecting rod (71) and the inner wall of the conveying roller (3).

3. The device for preventing galvanized sheet from sticking to the roller according to claim 2, characterized in that: A limiting rod (8) for limiting the rotation angle of the connecting rod (71) is fixed to the inner wall of the conveying roller (3); the extrusion rod (41) squeezes the force-bearing column (51) so that when the outer surface of the movable plate (5) protrudes from the outer surface of the conveying roller (3), the limiting rod (8) contacts the connecting rod (71).

4. The device for preventing galvanized sheet from sticking to the roller according to claim 1, characterized in that: The intermittent lifting assembly (1) comprises a motor (11), a rotating rod (12) and a lifting plate (13); the motor (11) is installed on the galvanizing production line and is located on one side of the conveying roller (3); the output shaft of the motor (11) and the rotating shaft (4) are parallel to each other, and the rotation direction of the output shaft of the motor (11) is consistent with the conveying direction of the steel plate (2); the rotating rod (12) is vertically fixed on the output shaft of the motor (11); the lifting plate (13) is fixed on one end of the rotating rod (12) away from the output shaft of the motor (11); after the lifting plate (13) rotates until it contacts the steel plate (2), the contact area between the steel plate (2) and the conveying roller (3) is reduced.

5. The device for preventing galvanized sheet from sticking to the roller according to claim 4, characterized in that: There are two groups of intermittent lifting components (1), which are respectively located on different sides of the conveying roller (3). When one group of lifting plates (13) contacts the steel plate (2), the other group of lifting plates (13) is located at the farthest distance from the steel plate (2).

6. A method for preventing galvanized sheet from sticking to rollers, characterized in that: The device for preventing galvanized sheet from sticking to the roller according to any one of claims 1 to 5 comprises the following steps: S1. When the steel plate (2) leached from the zinc bath passes through the conveying roller (3), the driving assembly (7) drives the rotating shaft (4) to rotate, and the rotating shaft (4) drives the squeezing rod (41) to squeeze the force-bearing column (51), so that the movable plate (5) protrudes from the outer surface of the conveying roller (3), thereby preventing the steel plate (2) from adhering to the outer surface of the conveying roller (3); S2, the driving assembly (7) then drives the rotating shaft (4) to reverse, the extrusion rod (41) and the force-bearing column (51) gradually separate, the reset assembly (6) drives the movable plate (5) to move into the conveying roller (3), the extrusion block (42) sucks the force-bearing column (51) to stretch the reset spring (62), and the outer surface of the movable plate (5) moves to the inside of the movable hole (31) to prevent the steel plate (2) from adhering to the outer surface of the movable plate (5). After the extrusion block (42) and the force-bearing column (51) separate, the reset assembly (6) drives the movable plate (5) to reset until the outer surface is coplanar with the outer surface of the conveying roller (3); S3. Simultaneously start the motors (11) of the two sets of intermittent lifting assemblies (1), so that the two sets of lifting plates (13) lift the steel plate (2) in an alternating manner, and reduce the force between the steel plate (2) and the conveying roller (3) at multiple frequencies.

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