An automatic deviation rectifying device of an environment-friendly recycled aluminum plate coating production line

Abstract

The application discloses an automatic deviation rectifying device of an environment-friendly recycled aluminum plate coating production line, relates to the technical field of automatic deviation rectifying of aluminum plate coating production lines, and is used for solving the problem that rigid transverse extrusion migration operation is easy to cause the edge warping of a coating aluminum plate during the deviation rectifying operation of the coating aluminum plate. The application is characterized in that the sliding cylinder is located at the side of the placing plate and slides through the electric push rod one, the sliding cylinder top rotating shaft abutting block is limited by the fixed rotating plate, the sliding cylinder bottom fixed cover is driven to rotate left and right, the direction of the fixed cover bottom receiving roller and the roller is changed, the deviation rectifying operation of the coating aluminum plate is completed through the rotation of the receiving roller, the effect is located at the bottom of the aluminum plate coating, the surface of the aluminum plate coating is not damaged, the roller continuously contacts and extrudes the aluminum plate coating after rotating, the friction between the aluminum plate coating and the receiving roller is increased, and the deviation rectifying efficiency of the whole aluminum plate coating is improved.

Description

Technical Field

[0001] This invention relates to the field of automatic alignment technology for aluminum plate coating production lines, specifically to an automatic alignment device for an environmentally friendly recycled aluminum plate coating production line. Background Technology

[0002] Aluminum sheet refers to rectangular sheet material rolled from aluminum ingots. It is generally divided into pure aluminum sheet, alloy aluminum sheet, thin aluminum sheet, medium and thick aluminum sheet and patterned aluminum sheet. The post-processing of aluminum coils includes coating, stamping and cutting to a fixed length. The coils need to be stretched. However, the deviation that occurs during the uncoiling and conveying process affects the accurate punching and cutting of the coated aluminum sheet in the later stage. Therefore, the coated aluminum sheet needs to be corrected during the movement process.

[0003] As mentioned in the patent text with publication number CN217749664U, by setting mounting blocks and limiting rods on both sides of the aluminum plate's moving direction, the moving direction of the aluminum plate is restricted by the limiting rods and guide rollers, correcting the moving direction of the aluminum plate from the conveying mechanism to the cutting mechanism, thereby improving the cutting accuracy of the aluminum plate. When the guide roller in the equipment is laterally calibrated, its contact point with the aluminum plate is small, and it directly and rigidly abuts laterally. Without buffer protection, the laterally applied extrusion force on the edge of the aluminum plate is prone to causing the aluminum plate to warp, affecting the overall aesthetics of the coated aluminum plate and subsequent processing.

[0004] Therefore, we propose an automatic deviation correction device for an environmentally friendly recycled aluminum plate coating production line. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic correction device for an environmentally friendly recycled aluminum plate coating production line, so as to solve the problem mentioned in the background art that the rigid lateral extrusion migration operation during the correction operation of coated aluminum plates easily causes the coated aluminum plates to warp.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic correction device for an environmentally friendly recycled aluminum plate coating production line, comprising a conveying base, a placement plate fixed to the top of the conveying base by bolts, a slide cylinder slidably connected to one side of the placement plate, a fixed cover movably connected to the bottom of the slide cylinder, and a laser displacement sensor fixed to one side of the placement plate by bolts.

[0007] The inner walls of both sides of the fixed cover are connected to receiving rollers evenly and movably via bearings, and rubber sleeves are evenly and fixedly fitted on the outer walls of the receiving rollers. The inner walls of both sides of the fixed cover and the top of the receiving rollers are symmetrically and movably connected to pressing mechanisms.

[0008] Furthermore, a rotating plate is rotatably connected to the top of the placement plate, and an electric push rod two is fixed to the top of the placement plate by bolts, with one end of the electric push rod two slidably engaged with one side of the rotating plate.

[0009] Furthermore, an electric push rod is fixed to one side of the placement plate by bolts, and one end of the electric push rod is fixed to the slide cylinder. A through groove is provided on the placement plate, and a spring is installed on one side of the slide cylinder through the through groove. A rotating shaft is movably connected inside the slide cylinder, and one end of the rotating shaft is connected to the top of the fixed cover by spot welding. The other end of the rotating shaft passes through the slide cylinder and is fixed to an abutment block by spot welding. One side of the spring is connected to the top of the abutment block, and a protrusion on the abutment block abuts against one side of the rotating plate.

[0010] Furthermore, the pressing mechanism includes a roller, a rotating tube, and folding rods. The bottom of the fixed cover is symmetrically and movably connected to the roller. The rotating tube is slidably connected inside the roller. The outer wall of the rotating tube is symmetrically fitted with a retaining sleeve. The inner wall of the roller is uniformly and symmetrically and movably connected with four folding rods. One end of each folding rod is fixed with a clamp by spot welding. One side of the clamp abuts against the retaining sleeve. The other side of the folding rod is movably connected to a storage rack. The outer wall of the roller is symmetrically provided with movable grooves. A pressure roller is movably connected to the storage rack and located on one side of the movable groove via a bearing. A second spring is installed on one inner wall of the roller. One side of the rotating tube abuts against the second spring.

[0011] Furthermore, a motor is fixed to one side of the fixed cover by bolts, and a gear is connected to the output end of the motor through the fixed cover. A gear connected to one side of the roller meshes with the gear on the output end of the motor. An electric push rod three is fixed to one side of the fixed cover by bolts. The rotating tube is located outside the roller and is rotatably connected to a perforated plate on the top inner wall of the fixed cover. One side of the perforated plate abuts against one end of the rotating tube. One end of the electric push rod three passes through the fixed cover and abuts against one side of the perforated plate.

[0012] The automatic correction method for this environmentally friendly recycled aluminum sheet coating production line is as follows:

[0013] The laser displacement sensor on the top of the placement plate measures the offset distance and direction of the side of the coated aluminum plate on the top of the receiving roller, and sends the offset distance and direction signals to an external processor to generate control signals that are fed back to the electric push rod. Based on the fact that the offset direction of the coated aluminum plate is opposite to the forward direction of the electric push rod, the electric push rod controls the slide cylinder to slide on one side of the placement plate, thereby causing the fixed cover connected to the rotating shaft to rotate.

[0014] The coated aluminum plate is located between the roller and the receiving roller inside the fixed cover. Due to the overall offset of the fixed cover, the rubber sleeve on the outside of the receiving roller changes its rotation direction at the bottom of the coated aluminum plate, which is opposite to the offset direction of the coated aluminum plate. At the same time, the electric push rod abuts against the perforated plate, and the perforated plate rotates and squeezes the rotating tube located outside the roller.

[0015] The rotating tube moves inward and drives the inner folding rod of the roller to rotate, thereby pushing the storage rack at one end of the folding rod out of the movable groove. The pressure roller installed on the storage rack begins to contact the top of the coated aluminum plate, squeezing the coated aluminum plate and increasing the friction between it and the rubber sleeve. Then, the receiving roller is driven by the motor to rotate, thus completing the correction of the offset coated aluminum plate.

[0016] Calculate the offset recovery distance of the coated aluminum plate per unit time, and control the electric push rod to slowly push the slide cylinder in the offset direction until the entire fixed cover is parallel to the edge of the placement plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] In this invention, the sliding cylinder is slid to one side of the placement plate by the operation of the electric push rod, and the abutment block on the top rotating shaft of the sliding cylinder is limited by the fixed rotating plate, thereby driving the bottom fixed cover of the sliding cylinder to rotate left and right, realizing the rotation of the receiving roller and the roller at the bottom of the fixed cover. The rotation of the receiving roller completes the correction operation of the coated aluminum plate. The effect is located at the bottom of the aluminum plate coating, and will not cause damage to the surface of the aluminum plate coating. At the same time, the push of the electric push rod three drives the perforated plate to flip and press the rotating tube located on one side of the roller, so that the rotating tube drives the folding rod inside the roller to rotate, and squeezes the pressure roller located on the storage rack out of the movable groove. After the roller rotates, the pressure roller continuously contacts and squeezes the aluminum plate coating, increasing the friction between the aluminum plate coating and the receiving roller, and improving the overall aluminum plate coating correction efficiency.

[0019] In this invention, the rotating plate is pushed by controlling the second electric push rod, which changes the slope of the rotating plate where the abutment block on the rotating shaft abuts. Therefore, the unit travel distance of the first electric push rod causes the rotation angle of the fixed cover to increase. This is suitable when the coated aluminum plate is wide inside the fixed cover and during the offset of the sliding cylinder, the edge of the coated aluminum plate abuts against both sides of the fixed cover, restricting the entire fixed cover from rotating over a long distance. Therefore, by increasing the slope of the entire rotating plate on the abutment block side, the entire fixed cover can complete a large-angle rotation with a small movement distance, improving the compatibility between the entire correction mechanism and the coated aluminum plate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the automatic correction device for the environmentally friendly recycled aluminum plate coating production line of the present invention.

[0021] Figure 2 This is a schematic diagram of the belt connection structure between the receiving roller and the roller cylinder of the present invention;

[0022] Figure 3 This is a schematic diagram of the connection structure between the bottom receiving roller and the cylinder of the fixed cover of the present invention;

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the roller of the present invention;

[0024] Figure 5 This is a schematic diagram of the perforated plate extrusion tube structure of the present invention;

[0025] Figure 6 This is a schematic diagram of part of the automatic correction operation of the environmentally friendly recycled aluminum plate coating production line of the present invention.

[0026] In the diagram: 1. Conveying base; 2. Placement plate; 3. Through groove; 4. Slide cylinder; 5. Fixing cover; 6. Rotating shaft; 7. Abutment block; 8. Spring 1; 9. Electric push rod 1; 10. Electric push rod 2; 11. Rotating plate; 12. Laser displacement sensor; 13. Receiving roller; 14. Pressing mechanism; 141. Roller; 142. Movable groove; 143. Rotating tube; 144. Sleeve; 145. Folding rod; 146. Clamping head; 147. Storage rack; 148. Pressure roller; 149. Spring 2; 15. Rubber sleeve; 16. Motor; 17. Electric push rod 3; 18. Perforated plate. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1-6 The present invention provides a technical solution:

[0029] Example 1: Based on the problem of movement and offset in the winding process of coated aluminum sheet preparation, a correction mechanism is installed on the conveyor base 1 as follows: Figure 1 As shown, the torque generated by the traditional roller surface turning changes the direction of movement of the coated aluminum plate. Compared with the direct action on both sides of the coated aluminum plate, it reduces the probability of edge deformation of the coated aluminum plate and improves the overall correction rate of the coated aluminum plate. The pressing mechanism 14 installed on the top of the receiving roller 13 actively presses the coated aluminum plate during the correction operation, increasing the friction between the coated aluminum plate and the receiving roller 13. With the help of the laser displacement sensor 12 and the external controller, the rapid correction operation of the coated aluminum plate during movement is realized.

[0030] Normally, the coated aluminum plate passes through the receiving roller 13 and the roller 141 and is then clamped and wound. The placement plate 2 is bolted to the conveying base 1, and has high overall adaptability. A slide cylinder 4 is slidably connected to one side of the placement plate 2, and a fixed cover 5 is movably connected to the bottom of the slide cylinder 4. The slide cylinder 4 is moved left and right by the electric push rod 9 installed on the placement plate 2.

[0031] A through groove 3 is provided on the placement plate 2. A spring 8 is connected to one side of the slide cylinder 4 through the through groove 3. A rotating shaft 6 is movably connected to the slide cylinder 4. One end of the rotating shaft 6 is fixedly connected to the top of the fixed cover 5. A laser displacement sensor 12 is installed on one side of the placement plate 2. The edge position of the coated aluminum plate is set as the center when it moves, and detection points are set at equal distances on the left and right sides. When the coated aluminum plate deviates and the deviation distance is greater than the left and right deviation threshold, the edge position deviates to one side of the detection point. The laser displacement sensor 12 will send the specific horizontal displacement data to the external processor. After the processor processes it, it generates a correction control signal and sends it to the electric push rod 9 and the electric push rod 17 to control the operation of the electric push rod 9 and the electric push rod 17.

[0032] For example, such as Figure 6 As shown, when the coated aluminum plate deviates to the right by a distance greater than the offset threshold, the electric push rod 9 retracts, pulling the slide cylinder 4 to move to the left on the side of the placement plate 2. Simultaneously, the spring 8 pulls the abutment block 7 to continuously abut against the edge of the rotating plate 11, causing the entire fixed cover 5 to rotate to the left. The receiving roller 13 at the bottom of the fixed cover 5 and the roller 141 rotate simultaneously. Figure 2 As shown, there are three receiving rollers 13 and two rollers 141. The outer walls of the five rollers are fitted with pulleys and connected by belts. The outer diameter of the pulley on the outer wall of the middle receiving roller 13 is larger than that on the two sides. The two rollers 141 are located at the top of the middle of the three receiving rollers 13. A gear is fixed on one side of one roller 141. The motor 16 installed on one side of the fixed cover 5 drives the roller 141 to rotate through the gear, thereby realizing the rotation of the five rollers.

[0033] Rubber sleeves 15 are uniformly fitted on the outer wall of the receiving roller 13 to increase the contact friction with the coated aluminum plate, thereby generating torque after rotation to correct the offset coated aluminum plate.

[0034] Secondly, to increase the friction between the coated aluminum plate and the receiving roller 13 during the correction operation, such as... Figure 4As shown, a rotating tube 143 is slidably connected inside the roller 141, and a retaining sleeve 144 is symmetrically fitted and fixed on the rotating tube 143. Next, a folding rod 145 is rotatably connected to the inner wall of the roller 141. A retaining head 146 is fixed to one end of the folding rod 145. The protrusion on the retaining head 146 abuts against the retaining sleeve 144. The retaining heads 146 connected to one end of the two folding rods 145 on the same cross-section are located on both sides of the retaining sleeve 144. A movable groove 142 is symmetrically opened on the outer wall of the roller 141. The other end of the folding rod 145 is movably stored in a storage rack 147. A pressure roller 148 is movably connected to the storage rack 147.

[0035] Normally, the pressure roller 148 on the storage rack 147 is inside the roller 141. When it is necessary to increase the friction between the receiving roller 13 and the coated aluminum plate, it is necessary to push the entire rotating tube 143 to move. For this purpose, a perforated plate 18 is rotatably connected to the top inner wall of the entire fixed cover 5. The rotating tube 143 at one end of the roller 141 passes through the perforated plate 18 and abuts against the perforated plate 18. This is achieved by a spring 149 installed inside the roller 141. An electric push rod 17 is installed on the outside of the fixed cover 5. When the electric push rod 17 receives a control command, it pushes the perforated plate 18 to rotate, thereby pushing the rotating tube 143.

[0036] like Figure 5 As shown, the rotating tube 143 moves to the right, and the folding rod 145 is rotated through the clamp 144, thereby pushing the storage rack 147 connected to one end of the folding rod 145 out of the movable groove 142. The pressure roller 148 on the storage rack 147 begins to squeeze the top of the coated aluminum plate, increasing the friction between the coated aluminum plate and the receiving roller 13. Through the rotation of the reverse receiving roller 13 and the timed pressure of the pressure roller 148 on the roller 141, the correction operation of the coated aluminum plate is completed. Since it is a large-area contact correction and is located at the bottom of the coated aluminum plate, deformation of the coated aluminum plate is avoided.

[0037] Since the entire receiving roller 13 has a process of correcting the coated aluminum plate, in order to avoid the fixed cover 5 being in an offset state after the correction is completed, causing the coated aluminum plate to continue to move and shift to the other side, the laser displacement sensor 12 is used to identify the lateral displacement rate of the coated aluminum plate during the correction process, thereby controlling the entire electric push rod 9 to drive the slide cylinder 4 back to the center, so that the entire fixed cover 5 is also in a horizontal state after the correction of the coated aluminum plate is completed.

[0038] Example 2: The entire fixed cover 5 is rotated by the rotation of the rotating shaft 6. A stop block 7 is fixedly connected to one end of the rotating shaft 6 at the top of the slide cylinder 4. A rotating plate 11 is rotatably connected to the top of the placement plate 2. One side of the rotating plate 11 is inclined. The connection between the spring 8 and the bottom of the stop block 7 makes the protrusion on the stop block 7 abut against the inclined surface of the rotating plate 11. Therefore, by fixing the rotating plate 11, when the slide cylinder 4 moves on one side of the placement plate 2, the stop block 7 drives the rotating shaft 6 to rotate left and right, thereby completing the rotation of the entire fixed cover 5.

[0039] like Figure 1 As shown, an electric push rod 10 is fixed on the top of the placement plate 2. One end of the electric push rod 10 is slidably connected to the rotating plate 11. By controlling the electric push rod 10, the rotating plate 11 is pushed, which changes the slope of the rotating plate 11 that is abutted by the abutment block 7 on the rotating shaft 6. Therefore, the unit travel distance of the electric push rod 19 causes the rotation angle of the fixed cover 5 to increase. This is suitable for situations where the coated aluminum plate is relatively wide inside the fixed cover 5. During the offset of the sliding cylinder 4, the edge of the coated aluminum plate abuts against both sides of the fixed cover 5, restricting the entire fixed cover 5 from rotating a long distance. Therefore, by increasing the slope of the entire rotating plate 11 on the abutment block 7 side, the entire fixed cover 5 can complete a large-angle rotation in the early stage of moving a small distance, thus improving the compatibility between the entire correction mechanism and the coated aluminum plate.

[0040] The working process and principle of this invention are as follows:

[0041] The laser displacement sensor 12 on the top of the placement plate 2 measures the offset distance and direction of the side of the coated aluminum plate on the top of the receiving roller 13, and sends the offset distance and direction signals to the external processor to generate control signals that are fed back to the electric push rod 9. Based on the fact that the offset direction of the coated aluminum plate is opposite to the travel direction of the electric push rod 9, the electric push rod 9 controls the slide cylinder 4 to slide on one side of the placement plate 2, thereby causing the fixed cover 5 connected to the rotating shaft 6 to rotate.

[0042] The coated aluminum plate is located between the inner roller 141 and the receiving roller 13 of the fixed cover 5. Due to the overall offset of the fixed cover 5, the outer rubber sleeve 15 of the receiving roller 13 changes its rotation direction at the bottom of the coated aluminum plate, which is opposite to the offset direction of the coated aluminum plate. At the same time, the electric push rod 17 abuts against the perforated plate 18, and the perforated plate 18 rotates and squeezes the rotating tube 143 located outside the roller.

[0043] The rotating tube 143 moves inward and drives the inner folding rod 145 of the roller 141 to rotate, thereby pushing the storage rack 147 at one end of the folding rod 145 out from the movable groove 142. The pressure roller 148 installed on the storage rack 147 begins to contact the top of the coated aluminum plate, squeezing the coated aluminum plate and increasing the friction between it and the rubber sleeve 15. Then, the receiving roller 13 is driven to rotate by the motor 16 to complete the correction of the offset coated aluminum plate.

[0044] Calculate the offset recovery distance of the coated aluminum plate per unit time, and control the electric push rod 9 to slowly push the slide cylinder 4 in the offset direction until the fixed cover 5 is parallel to the edge of the placement plate 2.

[0045] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

[0046] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic alignment device for an environmentally friendly recycled aluminum plate coating production line, comprising a conveyor base (1), characterized in that, The top of the conveying base (1) is fixed with a placement plate (2) by bolts. A slide cylinder (4) is slidably connected to one side of the placement plate (2). A fixed cover (5) is movably connected to the bottom of the slide cylinder (4). A laser displacement sensor (12) is fixed to one side of the placement plate (2) by bolts. The inner walls of both sides of the fixed cover (5) are connected to the receiving roller (13) evenly and movably via bearings, and rubber sleeves (15) are evenly and fixedly fitted on the outer wall of the receiving roller (13). The inner walls of both sides of the fixed cover (5) and the top of the receiving roller (13) are symmetrically and movably connected to the pressing mechanism (14). The top of the placement plate (2) is rotatably connected to a rotating plate (11), and the top of the placement plate (2) is fixed with an electric push rod two (10) by bolts, and one end of the electric push rod two (10) is slidably engaged with one side of the rotating plate (11). One side of the placement plate (2) is fixed with an electric push rod (9) by bolts, and one end of the electric push rod (9) is fixed to the slide cylinder (4). The placement plate (2) has a through groove (3). One side of the slide cylinder (4) passes through the through groove (3) and is fitted with a spring (8). The slide cylinder (4) is movably connected with a rotating shaft (6), and one end of the rotating shaft (6) is connected to the top of the fixed cover (5) by spot welding. The other end of the rotating shaft (6) passes through the slide cylinder (4) and is fixed with an abutment block (7) by spot welding. One side of the spring (8) is connected to the top of the abutment block (7), and the protrusion on the abutment block (7) abuts against one side of the rotating plate (11). One side of the rotating plate (11) is an inclined surface. By connecting the spring (8) to the bottom of the abutting block (7), the protrusion on the abutting block (7) abuts against the inclined surface of the rotating plate (11). By fixing the rotating plate (11) to limit the movement, when the slide cylinder (4) moves on the side of the placement plate (2), the abutting block (7) drives the rotating shaft (6) to rotate left and right, thus completing the rotation of the entire fixed cover (5).

2. The automatic deviation correction device for an environmentally friendly recycled aluminum plate coating production line according to claim 1, characterized in that, The pressing mechanism (14) includes a roller (141), a rotating tube (143), and a folding rod (145). The bottom of the fixed cover (5) is symmetrically and movably connected to the roller (141). The rotating tube (143) is slidably connected inside the roller (141). The outer wall of the rotating tube (143) is symmetrically fitted with a retaining sleeve (144). The inner wall of the roller (141) is uniformly and symmetrically connected with four folding rods (145). One end of each folding rod (145) is fixed with a retaining sleeve by spot welding. The head (146) has one side abutting against the sleeve (144), and the other side of the folding rod (145) is movably connected to the storage rack (147). The outer wall of the roller (141) is symmetrically provided with movable grooves (142). The storage rack (147) and located on one side of the movable groove (142) are movably connected to the pressure roller (148) through the bearing. The inner wall of one side of the roller (141) is equipped with a second spring (149), and one side of the rotating tube (143) abuts against the second spring (149).

3. The automatic alignment device for an environmentally friendly recycled aluminum plate coating production line according to claim 2, characterized in that, A motor (16) is fixed to one side of the fixed cover (5) by bolts, and a gear is connected to the output end of the motor (16) through the fixed cover (5). A gear connected to one side of the roller (141) meshes with the gear on the output end of the motor (16). An electric push rod three (17) is fixed to one side of the fixed cover (5) by bolts. The rotating tube (143) is located outside the roller (141) and is rotatably connected to the inner wall of the top of the fixed cover (5) with a perforated plate (18). One side of the perforated plate (18) abuts against one end of the rotating tube (143). One end of the electric push rod three (17) passes through the fixed cover (5) and abuts against one side of the perforated plate (18).

4. The automatic deviation correction device for an environmentally friendly recycled aluminum plate coating production line according to claim 3, characterized in that, The automatic correction method for this environmentally friendly recycled aluminum sheet coating production line is as follows: The laser displacement sensor (12) on the top of the placement plate (2) is used to measure the offset distance and direction of the side of the coated aluminum plate on the top of the receiving roller (13), and the offset distance and direction signals are sent to the external processor to generate control signals to feed back to the electric push rod (9). Based on the fact that the offset direction of the coated aluminum plate is opposite to the travel direction of the electric push rod (9), the electric push rod (9) controls the slide cylinder (4) to slide on one side of the placement plate (2), thereby causing the fixed cover (5) connected to the rotating shaft (6) to rotate. The coated aluminum plate is located between the inner roller (141) and the receiving roller (13) of the fixed cover (5). Due to the overall offset of the fixed cover (5), the outer rubber sleeve (15) of the receiving roller (13) at the bottom of the coated aluminum plate changes its rotation direction and is opposite to the offset direction of the coated aluminum plate. At the same time, the electric push rod three (17) abuts against the perforated plate (18), and the perforated plate (18) rotates and squeezes the rotating tube (143) located outside the roller. The rotating tube (143) moves inward and drives the folding rod (145) inside the roller (141) to rotate, thereby pushing the storage rack (147) at one end of the folding rod (145) out from the movable groove (142). The pressure roller (148) installed on the storage rack (147) begins to contact the top of the coated aluminum plate, squeezing the coated aluminum plate and increasing the friction between it and the rubber sleeve (15). Then, the receiving roller (13) is driven to rotate by the motor (16) to complete the correction of the offset coated aluminum plate. Calculate the offset recovery distance of the coated aluminum plate per unit time, and control the electric push rod (9) to slowly push the slide (4) in the offset direction until the fixed cover (5) is parallel to the edge of the placement plate (2).

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