A cold rolling mill for processing steel strip

Abstract

This utility model provides a cold rolling mill for steel strip processing. The cold rolling mill includes a frame, a winding assembly, a main cleaning assembly, a side cleaning assembly, and a straightening assembly. The winding assembly is used to wind up the processed steel strip. The main cleaning assembly is used to clean the steel strip. The side cleaning assembly is located between the winding assembly and the main cleaning assembly and is used to clean both sides of the steel strip. The straightening assembly is located on the frame, between the main cleaning assembly and the side cleaning assembly, and is used to automatically correct the deviation of the steel strip. This cold rolling mill for steel strip processing achieves the cleaning of impurities adhering to the surface of the steel strip through the arrangement of these structures, enabling better winding of the steel strip. Simultaneously, the straightening assembly ensures that the steel strip is centered during winding, guaranteeing the flatness of the coil end face after winding, reducing the shearing amount in subsequent slitting processes, and further providing high-quality billets for subsequent processing.

Description

Technical Field

[0001] This utility model relates to the technical field of cold rolling mills, and in particular to a cold rolling mill for steel strip processing. Background Technology

[0002] Cold rolling mills are key equipment in the field of metal pressure processing. They are mainly used to roll hot-rolled metal strips, such as steel plates and aluminum plates, at room temperature to obtain high-precision thickness, smooth surface quality and good mechanical properties.

[0003] After steel strip is produced by cold rolling mill, it needs to be coiled up for easy transportation. After cold rolling, many impurities will be attached to the surface of the steel strip. Existing cold rolling mills cannot clean the impurities attached to the surface of cold rolled steel strip during the coiling process, which is not conducive to subsequent processing and treatment. Utility Model Content

[0004] This utility model provides a cold rolling mill for steel strip processing to solve the technical problems mentioned in the background art.

[0005] This utility model provides a cold rolling mill for steel strip processing. The cold rolling mill for steel strip processing includes a frame, a winding assembly, a main cleaning assembly, a side cleaning assembly, and a straightening assembly. The winding assembly is disposed on the frame and located at one end of the frame. The winding assembly is used to wind up the processed steel strip. The main cleaning assembly is disposed on the frame and located at the end of the frame away from the winding assembly. The main cleaning assembly is used to clean the steel strip. The side cleaning assembly is disposed between the winding assembly and the main cleaning assembly and is used to clean both sides of the steel strip. The straightening assembly is disposed on the frame and located between the main cleaning assembly and the side cleaning assembly. The straightening assembly is used to automatically correct any deviation in the steel strip.

[0006] Optionally, the winding assembly includes a shaft, winding arms, take-up rollers, a main motor, and a self-locking part. The shaft is rotatably mounted on the frame. There are two winding arms, each fixedly mounted at one end of the shaft. There are two take-up rollers, each rotatably mounted at one end of the winding arms. The main motor is connected to the shaft. The self-locking part is mounted on the frame and connected to the main motor. The self-locking part is connected to the shaft and serves to keep the shaft fixed.

[0007] Optionally, the self-locking part includes a self-locking disc, a wedge, a drive gear, an output gear, a self-locking gear, and a rack. The self-locking disc is fixedly mounted on the rotating shaft, and two self-locking grooves are formed on the self-locking disc, which are opposite to each other. The wedge is slidably mounted on the frame and engages with the self-locking grooves. The drive gear is coaxially fixedly mounted on the output shaft of the main motor, and the output gear is coaxially fixedly mounted on the rotating shaft and meshes with the drive gear. The self-locking gear is rotatably mounted on the frame and coaxially mounted with the drive gear. Two racks are provided, each located on one side of the wedge and fixedly connected to the wedge. The racks mesh with the self-locking gears.

[0008] Optionally, the main cleaning assembly includes a rotating brush, pulleys, a first transmission belt, a first motor, a water tank, a high-pressure water pump, and pipes. Two rotating brushes are provided, each rotatably mounted on the frame. Two pulleys are provided, each coaxially fixed on one of the rotating brushes and connected via the first transmission belt. The first motor is coaxially fixed on one of the rotating brushes. The water tank is fixedly mounted on the frame, and the high-pressure water pump is fixedly mounted inside the water tank, with its inlet communicating with the interior of the water tank. Two pipes are provided, each fixedly mounted on the frame and communicating with the outlet of the high-pressure water pump. Multiple high-pressure nozzles are mounted on each pipe.

[0009] Optionally, the frame is provided with an adjustment slot, and the main cleaning assembly further includes a height adjustment part, which includes an adjustment block, an electric telescopic rod, a mounting rod, a first tension wheel, and a return spring. Two adjustment blocks are provided, located on opposite sides of the frame and fixedly connected to both ends of one of the rotating brushes. The adjustment blocks are slidably disposed within the adjustment slot. Two electric telescopic rods are provided, corresponding one-to-one with the two adjustment blocks. The electric telescopic rods are fixedly connected to the frame, and their movable ends are fixedly connected to the adjustment blocks. The mounting rod is disposed on the frame and hinged to it. The first tension wheel is rotatably disposed on the mounting rod and connected to the two pulleys via a first transmission belt. One end of the return spring is fixedly connected to the mounting rod, and the other end is fixedly connected to the frame.

[0010] Optionally, the cleaning assembly includes a connecting shaft, mounting blocks, a first spring, side cleaning brushes, a second pulley, a second transmission belt, a second motor, a tension rod, a second tension wheel, and a tension spring. The connecting shaft is fixedly mounted on the frame. Two mounting blocks are provided, each slidably mounted on both ends of the connecting shaft. Two sets of first springs are provided, each set containing multiple first springs. The two sets of first springs are respectively located on both sides of the frame. One end of each first spring is fixedly connected to the frame, and the other end is fixedly connected to the mounting block. Two side cleaning brushes are provided, each connected to a second pulley and a second transmission belt. Each mounting block corresponds to a side cleaning brush, which is rotatably mounted on the mounting block. Two second pulleys are provided, each coaxially fixed on one of the two side cleaning brushes and connected by a second transmission belt. A second motor is coaxially fixed on one of the side cleaning brushes. A tensioning rod is mounted on one of the mounting blocks and hinged to it. A second tensioning wheel is rotatably mounted on the tensioning rod and connected to the two second pulleys via the second transmission belt. One end of the tensioning spring is fixedly connected to the mounting block, and the other end is fixedly connected to the tensioning rod.

[0011] Optionally, the correction assembly includes a guide shaft, a movable block, a second spring, a correction plate, a rope, a counterweight, and a guide cylinder. The guide shaft is fixedly mounted on the frame. Two movable blocks are provided, each slidably mounted at one end of the guide shaft. Two sets of second springs are provided, each set positioned at one end of the guide shaft. One end of each second spring is fixedly connected to the frame, and the other end is fixedly connected to a movable block. Two sets of correction plates are provided, each set positioned at one end of the guide shaft. There are two straightening plates, located at opposite ends of the moving block and rotatably connected to it. There are four ropes, each positioned at the bottom end of one of the four straightening plates. There are four counterweights, each corresponding to one of the four ropes and fixedly connected to them. There are also four guide cylinders, all fixedly mounted on the frame and corresponding to one of the four counterweights, with the counterweights slidably disposed within each guide cylinder.

[0012] Optionally, the correction assembly further includes four support wheels, each corresponding to one of the four ropes. The support wheels are fixedly connected to the frame and abut against the ropes.

[0013] The beneficial effects of this utility model are as follows: This cold rolling mill for steel strip processing includes a frame, a winding assembly, a main cleaning assembly, a side cleaning assembly, and a straightening assembly. The winding assembly is used to wind up the processed steel strip. The main cleaning assembly is used to clean the steel strip. The side cleaning assembly is located between the winding assembly and the main cleaning assembly and is used to clean both sides of the steel strip. The straightening assembly is located on the frame and between the main cleaning assembly and the side cleaning assembly. The straightening assembly is used to automatically correct the deviation of the steel strip. This cold rolling mill for steel strip processing achieves the cleaning of impurities attached to the surface of the steel strip through the arrangement of various structures, so that the steel strip can be wound up better. At the same time, the straightening assembly keeps the steel strip in a centered position during winding, ensuring the flatness of the end face of the coiled steel strip, reducing the shearing amount in the subsequent slitting process, and further providing high-quality billets for subsequent processing. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a structural schematic diagram of a cold rolling mill for steel strip processing provided by this utility model; Figure 2 yes Figure 1 Enlarged view at point A in the middle; Figure 3 This is a schematic diagram intended to illustrate the structure of the main cleanup component; Figure 4 This is a schematic diagram intended to illustrate the structure of the side cleaning component; Figure 5 This is a schematic diagram intended to illustrate the structure of the corrective components.

[0016] Explanation of reference numerals in the attached figures: 1. Frame; 11. Adjustment groove; 2. Take-up assembly; 21. Shaft; 22. Take-up arm; 23. Take-up roller; 24. Main motor; 25. Self-locking part; 251. Self-locking disc; 252. Wedge; 253. Drive gear; 254. Output gear; 255. Self-locking gear; 256. Rack; 3. Main cleaning assembly; 31. Rotary brush; 32. Pulley; 33. First drive belt; 34. First motor; 35. Water tank; 36. High-pressure water pump; 37. Pipeline; 38. Height adjustment part; 381. Adjustment block; 382. Electric... 383. Telescopic rod; 384. Mounting rod; 385. First tensioning wheel; 386. Return spring; 4. Side cleaning assembly; 40. Connecting shaft; 41. Mounting block; 42. First spring; 43. Side cleaning brush; 44. Second pulley; 45. Second transmission belt; 46. Second motor; 47. Tensioning rod; 48. Second tensioning wheel; 49. Tensioning spring; 5. Correction assembly; 51. Guide shaft; 52. Moving block; 53. Second spring; 54. Correction plate; 55. Rope; 56. Counterweight; 57. Guide cylinder; 58. Support wheel. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to the present utility model are shown in the drawings, not all of the structures. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0018] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0019] Please see Figures 1 to 5 The present invention provides a cold rolling mill for steel strip processing, comprising a frame 1, a winding assembly 2, a main cleaning assembly 3, a side cleaning assembly 4, and a straightening assembly 5; The winding assembly 2 is mounted on the frame 1 and located at one end of the frame 1. The winding assembly 2 is used to wind up the processed steel strip. The main cleaning assembly 3 is mounted on the frame 1 and located at the end of the frame 1 away from the winding assembly 2. The main cleaning assembly 3 is used to clean the steel strip. The side cleaning assembly 4 is mounted between the winding assembly 2 and the main cleaning assembly 3 and is used to clean both sides of the steel strip. The straightening assembly 5 is mounted on the frame 1 and located between the main cleaning assembly 3 and the side cleaning assembly 4. The straightening assembly 5 is used to automatically correct the offset steel strip. During the winding process of the winding assembly 2 after the steel strip is rolled, the main cleaning assembly 3 cleans the impurities attached to the top and bottom of the steel strip, and the side cleaning assembly 3 cleans both sides of the steel strip, thereby completing the cleaning of impurities and dust attached to the steel strip. At the same time, the straightening component 5 resets the misaligned steel strip, placing it in the middle position, thereby ensuring the flatness of the end face of the coiled steel and reducing the shearing amount in the subsequent slitting process.

[0020] In this embodiment, the take-up assembly 2 includes a rotating shaft 21, take-up arms 22, take-up rollers 23, a main motor 24, and a self-locking part 25. The rotating shaft 21 is rotatably mounted on the frame 1. There are two take-up arms 22, which are respectively fixedly mounted at both ends of the rotating shaft 21. There are two take-up rollers 23, which are respectively rotatably mounted at both ends of the take-up arms 22. The main motor 24 is connected to the rotating shaft 21. The self-locking part 25 is mounted on the frame 1 and connected to the main motor 24. The self-locking part 25 is connected to the rotating shaft 21 and is used to keep the rotating shaft 21 fixed. When the steel strip on one take-up roller 23 reaches the set length, the main motor 24 drives the rotating shaft 21 to rotate, the rotating shaft 21 drives the take-up arm 22 to rotate, and the take-up roller 23 follows the take-up arm 22 to rotate, thereby rotating the other empty take-up roller 23 to the working position. At the same time, the self-locking part 25 fixes the rotating shaft 21, so that the rotating shaft 21 is not easy to rotate during the take-up process.

[0021] In this embodiment, the self-locking part 25 includes a self-locking disc 251, a wedge 252, a drive gear 253, an output gear 254, a self-locking gear 255, and a rack 256. The self-locking disc 251 is fixedly mounted on the rotating shaft 21, and two self-locking grooves are formed on the self-locking disc 251, which are opposite to each other. The wedge 252 is slidably mounted on the frame 1, and the wedge 252 cooperates with the self-locking grooves. The drive gear 253 is coaxially fixedly mounted on the output shaft of the main motor 24, and the output gear 254 is coaxially fixedly mounted on the rotating shaft 21 and meshes with the drive gear 253. The self-locking gear 255 is rotatably mounted on the frame 1 and is coaxially mounted with the drive gear 253. There are two racks 256, which are located on both sides of the wedge 252 and are fixedly connected to the wedge 252. The racks 256 mesh with the self-locking gears 255. Among them, the drive gear 253 is an incomplete gear. The output shaft of the main motor 24 drives the drive gear 253 to rotate, and the drive gear 253 drives the output gear 254 to rotate. The output gear 254 and the rotating shaft 21 are coaxially fixedly connected, thereby realizing the conversion of the two take-up rollers 23. During the switching process of the two take-up rollers 23, the main motor 24 drives the self-locking gear 255 to rotate. The self-locking gear 255 is an incomplete gear. The self-locking gear 255 meshes with the rack 256. When the self-locking gear 255 drives the rack 256 to move upward, the rack 256 drives the wedge 252 to move upward. The wedge 252 inserts into the self-locking groove, making it difficult for the shaft 21 to rotate. When it needs to be replaced again, the main motor 24 drives the self-locking gear 255 to continue rotating. The self-locking gear 255 meshes with the rack 256 on the other side. The rack 256 moves downward, and the wedge 252 moves downward with the rack 256. The wedge 252 disengages from the self-locking groove, so that the shaft 21 can rotate again.

[0022] In this embodiment, the main cleaning assembly 3 includes a rotating brush 31, pulleys 32, a first transmission belt 33, a first motor 34, a water tank 35, a high-pressure water pump 36, and pipes 37. Two rotating brushes 31 are provided, each rotatably mounted on the frame 1. Two pulleys 32 are provided, each coaxially fixed on one of the rotating brushes 31 and connected by the first transmission belt 33. The first motor 34 is coaxially fixed on one of the rotating brushes 31. The water tank 35 is fixedly mounted on the frame 1, and the high-pressure water pump 36 is fixedly mounted inside the water tank 35, with its inlet communicating with the interior of the water tank 35. Two pipes 37 are provided, each fixedly mounted on the frame 1 and communicating with the outlet of the high-pressure water pump 36. Multiple high-pressure nozzles are provided on each pipe 37. The high-pressure water pump 36 draws water from the water tank 35, and the water flows from the outlet of the high-pressure water pump 36 into the pipe 37. Then, it is sprayed from the high-pressure nozzle on the pipe 37 onto the steel belt. The steel belt moves to the rotating brush 31, and the first motor 34 drives the rotating brush 31 to rotate. At the same time, the pulley 32 connected to it drives another pulley 32 to rotate through the first transmission belt 33, and the other rotating brush 31 also rotates, thereby cleaning the top and bottom of the steel belt.

[0023] In this embodiment, the frame 1 is provided with an adjustment groove 11, and the main cleaning assembly 3 further includes a height adjustment part 38. The height adjustment part 38 includes an adjustment block 381, an electric telescopic rod 382, ​​a mounting rod 383, a first tensioning wheel 384, and a return spring 385. Two adjustment blocks 381 are provided, located on both sides of the frame 1 respectively, and fixedly connected to both ends of one of the rotating brushes 31. The adjustment blocks 381 are slidably disposed in the adjustment groove 11. Two electric telescopic rods 382 are provided. The electric telescopic rod 382 corresponds one-to-one with the two adjusting blocks 381. The electric telescopic rod 382 is fixedly connected to the frame 1. The movable end of the electric telescopic rod 382 is fixedly connected to the adjusting block 381. The mounting rod 383 is mounted on the frame 1 and hinged to the frame 1. The first tension wheel 384 is rotatably mounted on the mounting rod 383 and connected to the two pulleys 32 through the first transmission belt 33. One end of the return spring 385 is fixedly connected to the mounting rod 383 and the other end is fixedly connected to the frame 1. The electric telescopic rod 382 drives the adjusting block 381 to move up and down. When the adjusting block 381 moves upward, the distance between the two pulleys 32 increases, and the first transmission belt 33 causes the first tensioning wheel 384 to rotate towards the two pulleys 32. When the adjusting block 381 moves downward, the distance between the two pulleys 32 decreases, and the first tensioning wheel 384 moves away from the two pulleys 32 under the action of the return spring 385, so that the first transmission belt 33 always remains taut, thereby enabling the distance between the two rotating brushes 31 to be adjusted according to the thickness of the steel belt.

[0024] In this embodiment, the side cleaning assembly 4 includes a connecting shaft 40, mounting blocks 41, a first spring 42, a side cleaning brush 43, a second pulley 44, a second transmission belt 45, a second motor 46, a tension rod 47, a second tension wheel 48, and a tension spring 49. The connecting shaft 40 is fixedly mounted on the frame 1. Two mounting blocks 41 are provided, each slidably mounted on both ends of the connecting shaft 40. Two sets of first springs 42 are provided, each set containing multiple first springs 42. The two sets of first springs 42 are respectively located on both sides of the frame 1. One end of each first spring 42 is fixedly connected to the frame 1, and the other end is fixedly connected to the mounting block 41. Two side cleaning brushes 43 are provided. Brush 43 corresponds one-to-one with two mounting blocks 41. The side cleaning brush 43 is rotatably mounted on the mounting block 41. There are two second pulleys 44, which are coaxially fixedly mounted on the two side cleaning brushes 43 respectively. The two second pulleys 44 are connected by the second transmission belt 45. The second motor 46 is coaxially fixedly mounted on one of the side cleaning brushes 43. The tension rod 47 is mounted on one of the mounting blocks 41 and is hinged to the mounting block 41. The second tension wheel 48 is rotatably mounted on the tension rod 47 and is connected to the two second pulleys 44 through the second transmission belt 45. One end of the tension spring 49 is fixedly connected to the mounting block 41 and the other end is fixedly connected to the tension rod 47. The steel strip is placed between two mounting blocks 41. The first spring 42 is compressed to generate elastic force. Under the elastic force of the first spring 42, the mounting blocks 41 tend to move towards each other. The mounting blocks 41 abut against the side of the steel strip, and the side cleaning brush 43 abuts against the side wall of the steel strip. The second motor 46 drives the side cleaning brush 43 connected to it to rotate. At the same time, the second pulley 44, which is coaxially fixedly connected to the output shaft of the second motor 46, also rotates. The second pulley 44 drives another second pulley 44 to rotate through the second transmission belt 45, so that the two side cleaning brushes 43 can better clean both sides of the steel strip. Because the steel belts have different widths, the first spring 42 allows the distance between the two mounting blocks 41 to be adjusted according to the width between the steel belts. Under the elastic force of the tension spring 49, the second tension wheel 48 keeps the second transmission belt 45 taut, so that the second motor 46 can better drive the side cleaning brush 43 for cleaning.

[0025] In this embodiment, the correction component 5 includes a guide shaft 51, a moving block 52, a second spring 53, a correction plate 54, a rope 55, a counterweight 56, and a guide cylinder 57. The guide shaft 51 is fixedly mounted on the frame 1. Two moving blocks 52 are provided, each slidably mounted at one end of the guide shaft 51. Two sets of second springs 53 are provided, each set being mounted at one end of the guide shaft 51. One end of each second spring 53 is fixedly connected to the frame 1, and the other end is fixedly connected to the moving block 52. Two sets of correction plates 54 are provided, each set being mounted at one end of the guide shaft 51. Two straightening plates 54 are provided, and the two straightening plates 54 are respectively located at both ends of the moving block 52. The straightening plates 54 are rotatably connected to the moving block 52. Four ropes 55 are provided, and the four ropes 55 are respectively provided at the bottom ends of the four straightening plates 54. Four counterweights 56 are provided, and the four counterweights 56 correspond one-to-one with the four ropes 55. The counterweights 56 are fixedly connected to the ropes 55. Four guide cylinders 57 are provided, and the four guide cylinders 57 are all fixedly provided on the frame 1. The four guide cylinders 57 correspond one-to-one with the four counterweights 56. The counterweights 56 are slidably disposed in the guide cylinders 57. When the steel belt deviates during movement, the straightening plate 54 rotates around the hinge axis under the lateral thrust of the steel belt. At this time, the counterweight 56 ​​connected to the straightening plate 54 by the rope 55 will sink, forming gravitational potential energy opposite to the direction of rotation. The gravity of the counterweight 56 ​​will drive the straightening plate 54 to rotate in the opposite direction and return to the initial position through the rope 55. The reset action of the straightening plate 54 causes the steel belt to return to the center position, thereby realizing the correction of the movement trajectory of the steel belt.

[0026] In this embodiment, the correction component 5 further includes four support wheels 58, each of which corresponds to one of the four ropes 55. The support wheels 58 are fixedly connected to the frame 1 and abut against the ropes 55. Among them, the support wheel 58 makes the force on the counterweight 56 ​​less likely to change due to the change in the distance between the two straightening plates 54, thereby enabling the straightening plates 54 to better straighten the steel belt.

[0027] This cold rolling mill for steel strip processing includes a frame 1, a winding assembly 2, a main cleaning assembly 3, a side cleaning assembly 4, and a straightening assembly 5. The winding assembly 2 is used to wind up the processed steel strip. The main cleaning assembly 3 is used to clean the steel strip. The side cleaning assembly 4 is located between the winding assembly 2 and the main cleaning assembly 3 and is used to clean both sides of the steel strip. The straightening assembly 5 is located on the frame 1 and between the main cleaning assembly 3 and the side cleaning assembly 4. The straightening assembly 5 is used to automatically correct the deviation of the steel strip. This cold rolling mill for steel strip processing achieves the cleaning of impurities attached to the surface of the steel strip through the arrangement of various structures, so that the steel strip can be wound up better. At the same time, the straightening assembly 5 keeps the steel strip in the center position during winding, ensuring the flatness of the end face of the coil after winding, reducing the shearing amount in the subsequent slitting process, and further providing high-quality billets for subsequent processing.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A cold rolling mill for processing steel strip, characterized in that, include frame; A winding assembly is mounted on the frame and located at one end of the frame. The winding assembly is used to wind up the processed steel strip. A main cleaning assembly is mounted on the frame and located at the end of the frame away from the winding assembly. The main cleaning assembly is used to clean the steel strip. A side cleaning assembly is disposed between the winding assembly and the main cleaning assembly and is used to clean both sides of the steel strip; A correction assembly is disposed on the frame and located between the main cleaning assembly and the side cleaning assembly. The correction assembly is used to automatically correct the offset steel strip.

2. The cold rolling mill for steel strip processing according to claim 1, characterized in that, The winding assembly includes a shaft, winding arms, take-up rollers, a main motor, and a self-locking part. The shaft is rotatably mounted on the frame. There are two winding arms, each fixedly mounted at one end of the shaft. There are also two take-up rollers, each rotatably mounted at one end of the winding arms. The main motor is connected to the shaft. The self-locking part is mounted on the frame and connected to the main motor. The self-locking part is connected to the shaft and serves to keep the shaft fixed.

3. A cold rolling mill for steel strip processing according to claim 2, characterized in that, The self-locking part includes a self-locking disc, a wedge, a drive gear, an output gear, a self-locking gear, and a rack. The self-locking disc is fixedly mounted on the rotating shaft and has two self-locking grooves that are opposite each other. The wedge is slidably mounted on the frame and engages with the self-locking grooves. The drive gear is coaxially fixedly mounted on the output shaft of the main motor, and the output gear is coaxially fixedly mounted on the rotating shaft and meshes with the drive gear. The self-locking gear is rotatably mounted on the frame and coaxially mounted with the drive gear. There are two racks, each located on one side of the wedge and fixedly connected to the wedge. The racks mesh with the self-locking gears.

4. A cold rolling mill for steel strip processing according to claim 3, characterized in that, The main cleaning assembly includes a rotating brush, pulleys, a first transmission belt, a first motor, a water tank, a high-pressure water pump, and pipes. Two rotating brushes are provided, each rotatably mounted on the frame. Two pulleys are provided, each coaxially fixed on one of the rotating brushes and connected by the first transmission belt. The first motor is coaxially fixed on one of the rotating brushes. The water tank is fixedly mounted on the frame, and the high-pressure water pump is fixedly mounted inside the water tank, with its inlet communicating with the inside of the water tank. Two pipes are provided, each fixedly mounted on the frame and communicating with the outlet of the high-pressure water pump. Multiple high-pressure nozzles are installed on each pipe.

5. A cold rolling mill for steel strip processing according to claim 4, characterized in that, The frame is provided with an adjustment slot. The main cleaning assembly also includes a height adjustment part, which includes an adjustment block, an electric telescopic rod, a mounting rod, a first tension wheel, and a return spring. There are two adjustment blocks, which are located on both sides of the frame and are fixedly connected to both ends of one of the rotating brushes. The adjustment blocks are slidably disposed in the adjustment slot. There are two electric telescopic rods, which correspond one-to-one with the two adjustment blocks. The electric telescopic rods are fixedly connected to the frame, and the movable end of the electric telescopic rod is fixedly connected to the adjustment block. The mounting rod is disposed on the frame and hinged to the frame. The first tension wheel is rotatably disposed on the mounting rod and is connected to the two pulleys through the first transmission belt. One end of the return spring is fixedly connected to the mounting rod, and the other end is fixedly connected to the frame.

6. A cold rolling mill for steel strip processing according to claim 5, characterized in that, The cleaning assembly includes a connecting shaft, mounting blocks, a first spring, side cleaning brushes, a second pulley, a second transmission belt, a second motor, a tension rod, a second tension wheel, and a tension spring. The connecting shaft is fixedly mounted on the frame. Two mounting blocks are provided, each slidably mounted on both ends of the connecting shaft. Two sets of first springs are provided, each set containing multiple springs. The two sets of first springs are respectively located on both sides of the frame. One end of each first spring is fixedly connected to the frame, and the other end is fixedly connected to a mounting block. Two side cleaning brushes are provided, and each set of two side cleaning brushes is connected to a second mounting block. The mounting blocks are arranged in a one-to-one correspondence. The side cleaning brush is rotatably mounted on the mounting block. There are two second pulleys, which are coaxially fixedly mounted on the two side cleaning brushes respectively. The two second pulleys are connected by the second transmission belt. The second motor is coaxially fixedly mounted on one of the side cleaning brushes. The tensioning rod is mounted on one of the mounting blocks and hinged to the mounting block. The second tensioning wheel is rotatably mounted on the tensioning rod and is connected to the two second pulleys through the second transmission belt. One end of the tensioning spring is fixedly connected to the mounting block, and the other end is fixedly connected to the tensioning rod.

7. A cold rolling mill for steel strip processing according to claim 6, characterized in that, The correction assembly includes a guide shaft, a moving block, a second spring, a correction plate, ropes, counterweights, and guide cylinders. The guide shaft is fixedly mounted on the frame. There are two moving blocks, each slidably mounted at one end of the guide shaft. There are two sets of second springs, each set located at one end of the guide shaft, with one end fixedly connected to the frame and the other end fixedly connected to a moving block. There are two sets of correction plates, each set located at one end of the guide shaft, with two plates in each set. The correction plates are rotatably connected to the moving blocks. There are four ropes, each located at the bottom end of one of the four correction plates. There are four counterweights, each corresponding to one of the four ropes, and the counterweights are fixedly connected to the ropes. There are four guide cylinders, each fixedly mounted on the frame, each corresponding to one of the four counterweights, with the counterweights slidably mounted inside the guide cylinders.

8. A cold rolling mill for steel strip processing according to claim 7, characterized in that, The correction assembly also includes four support wheels, each corresponding to one of the four ropes. The support wheels are fixedly connected to the frame and abut against the ropes.

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