A cleaning mechanism for cold-rolled strip steel

Abstract

This application discloses a cold-rolled strip cleaning mechanism, belonging to the field of cold rolling technology. The key technical point is that the cold-rolled strip cleaning mechanism includes a cleaning box, which has an inlet for strip input and an outlet for strip output. The cleaning box contains multiple sets of conveying components that are spaced apart along the strip conveying direction. The cleaning box also contains a spraying device for spraying strip cleaning agent and at least two sets of cleaning components for cleaning the strip surface. The at least two sets of cleaning components are located on the side of the spraying device away from the inlet, and are arranged sequentially along the strip conveying direction, thereby reducing the possibility of oil stains on the strip surface.

Description

Technical Field

[0001] This application relates to the field of cold rolling technology, and in particular to a cleaning mechanism for cold-rolled strip steel. Background Technology

[0002] Currently, hot-rolled steel coils are used as raw materials. After pickling to remove oxide scale, they are subjected to cold continuous rolling. The finished product is hard-rolled coil. Due to the work hardening caused by continuous cold deformation, the strength and hardness of the hard-rolled coil increase, while its toughness and plasticity decrease. Therefore, its stamping performance will deteriorate, and it can only be used for parts with simple deformation.

[0003] In related technologies, during the production of strip steel, its surface inevitably becomes contaminated with oil and other impurities. In existing technologies, a cleaning cloth is generally wrapped around a cleaning roller so that the cleaning cloth comes into contact with the strip steel. During the strip steel conveying process, the cleaning cloth cleans the oil and other impurities adhering to the strip steel.

[0004] Regarding the aforementioned technologies, the inventors believe that as the cleaning cloth is used for longer periods and is not wrapped evenly, some areas of the strip may not be cleaned, resulting in oil stains on the strip surface and affecting product quality. Summary of the Invention

[0005] To reduce the possibility of oil stains on the surface of strip steel, the present invention provides a cold-rolled strip steel cleaning mechanism.

[0006] The cold-rolled strip cleaning mechanism provided by this invention adopts the following technical solution:

[0007] A cold-rolled strip cleaning mechanism includes a cleaning box with a feed hole for inputting strip steel and a discharge hole for outputting strip steel. The cleaning box contains multiple sets of conveying components that are spaced apart along the strip steel conveying direction. The cleaning box also contains a spraying device for spraying strip steel cleaning agent and at least two sets of cleaning components for cleaning the strip steel surface. The at least two sets of cleaning components are located on the side of the spraying device away from the feed hole, and are arranged sequentially along the strip steel conveying direction.

[0008] By adopting the above technical solution, the strip steel enters the cleaning box through the feed hole, is conveyed by multiple sets of conveying devices, and finally exits the cleaning box through the discharge port. After entering the cleaning box, the strip steel cleaning agent is first sprayed onto the strip steel by a spraying device, and the cleaning agent cleans the oil stains on the strip steel. Then, at least two sets of cleaning components clean the surface of the strip steel evenly, removing the cleaning agent and reducing the possibility of oil spots on the surface of the strip steel, thereby improving product quality.

[0009] Preferably, a set of cleaning components includes two cleaning rollers symmetrically arranged about the strip, connecting rods connected to the cleaning rollers, and cleaning components connected to the connecting rods. Both cleaning rollers are rotatably connected to the cleaning box. Multiple connecting rods are provided, and the multiple connecting rods are divided into two groups. The two groups of connecting rods are respectively connected to the two cleaning rollers. Multiple connecting rods in the same group are equally spaced along the circumference of the cleaning rollers. Multiple cleaning components abut against the strip in sequence. The cleaning box is connected to a motor that drives the cleaning rollers to rotate. The two cleaning rollers in the same group move synchronously through a linkage component.

[0010] By adopting the above technical solution, when using the cleaning components, the motor is started, which drives one cleaning roller to rotate. This cleaning roller drives the linkage component to move, which in turn drives another cleaning roller to rotate. The two cleaning rollers drive two sets of connecting rods to move, and the multiple connecting rods drive the cleaning components to move. During the movement, the multiple cleaning components come into contact with the strip steel in sequence, thereby cleaning the strip steel. The gaps between the cleaning components prevent the steel strip from being completely wiped. The cleaning components of the next set of cleaning components clean the areas that the first set did not clean, making the strip steel more evenly cleaned after passing through two sets of cleaning components. This also ensures that there is no residual cleaning agent or oil stains on the surface of the strip steel, reducing the possibility of oil stains on the surface of the strip steel and improving product quality.

[0011] Preferably, the cleaning box is connected to a dewatering assembly for squeezing out the cleaning agent from the cleaning component. Multiple sets of the dewatering assembly are provided, and every two sets of the dewatering assembly are symmetrically arranged about the strip. The multiple sets of the dewatering assembly are respectively arranged close to multiple cleaning rollers.

[0012] By adopting the above technical solution, the dewatering assembly can sequentially squeeze out the cleaning agent from multiple cleaning components, keeping the cleaning components clean and in an absorbable state, and adsorbing the cleaning agent on the strip surface, so that the strip surface can absorb more cleaning agent, making the strip surface cleaner, further reducing the possibility of oil stains on the strip surface, and thus improving product quality.

[0013] Preferably, a set of the dewatering components includes a lead screw rotatably connected to the cleaning box, a guide rod connected to the cleaning box, a squeezing block sleeved on the lead screw and the guide rod, and an action rod fixedly connected to the lead screw. The length direction of the guide rod is parallel to the length direction of the lead screw. The squeezing block is threadedly connected to the lead screw and slidably connected to the guide rod. The action rod abuts against and slides relative to the connecting rod.

[0014] By adopting the above technical solution, during the movement of the cleaning component, the cleaning roller rotates, and multiple connecting rods sequentially abut against the actuating rod, driving the actuating rod to rotate. The rotation of the actuating rod drives the lead screw to rotate. Since the extrusion block is threadedly connected to the lead screw and slidably connected to the guide rod, when the lead screw rotates, it drives the extrusion block to move closer to the cleaning component and extrudes the cleaning component, squeezing out the cleaning agent absorbed by the cleaning component. This allows the cleaning component to absorb more cleaning agent when cleaning the strip steel again, resulting in a more uniform and cleaner cleaning of the strip steel surface, reducing the possibility of oil spots on the strip steel surface, and improving product quality.

[0015] Preferably, the extrusion block is inclined near the side wall of the cleaning component, and it slopes downward from the end near the lead screw to the end near the guide rod. A guide plate is provided between the connecting rod and the cleaning component. The guide plate includes a guide portion and two symmetrically arranged limiting portions. The length of the guide portion is greater than the width of the strip steel. The guide portion is inclined near the side wall of the cleaning component, and its inclination angle matches the side wall of the extrusion block near the cleaning component. The two limiting portions are respectively connected to both sides of the guide portion in the length direction. The guide portion is connected to both the connecting rod and the cleaning component. The top of the limiting portion away from the guide portion is higher than the top of the guide portion.

[0016] By adopting the above technical solution, when the extrusion block approaches the cleaning component, the cleaning component is squeezed by the extrusion assembly, and the cleaning agent it absorbs is squeezed out of the cleaning component. Since the top of the limiting part, which is away from the guide part, is higher than the top of the guide part, the cleaning agent squeezed out of the cleaning component flows onto the guide plate and the limiting plate. Since the length of the guide part is greater than the width of the strip steel and its side wall near the cleaning component is inclined, the cleaning agent will flow down the inclined surface of the guide part to the bottom of the cleaning box and will not flow onto the strip steel. The limiting part further restricts the cleaning agent from flowing onto the strip steel from both sides along the length of the guide part, thereby facilitating the cleaning component to clean the strip steel. The inclination angle of the side walls of the guide part and the extrusion block are matched to facilitate the extrusion of the cleaning component.

[0017] Preferably, the inner wall of the cleaning box is connected to a limiting rod that is on the same horizontal plane as the actuating rod. A spring is provided between the limiting rod and the actuating rod, with one end of the spring connected to the limiting rod and the other end connected to the actuating rod.

[0018] By adopting the above technical solution, the connecting rod drives the action rod to rotate, and the spring is stretched. When the roller on the connecting rod disengages from the action rod, the action rod will return to its original position due to the elastic force of the spring and abut against the roller on the next connecting rod, thereby squeezing the next cleaning part and realizing the continuous operation of the squeezing assembly.

[0019] Preferably, a roller is fitted on the connecting rod, the roller is rotatably connected to the connecting rod, and the outer peripheral wall of the roller abuts against the side wall of the actuating rod.

[0020] By adopting the above technical solution, the roller reduces the friction between the connecting rod and the actuating rod, and increases the service life of the actuating rod and the connecting rod.

[0021] Preferably, the spraying device includes a conveying pipe for conveying cleaning agent, an upper branch pipe connected to the cleaning tank, a lower branch pipe connected to the cleaning tank, and a plurality of spray heads for spraying cleaning agent. The conveying pipe is connected to both the upper branch pipe and the lower branch pipe. The upper branch pipe is located above the strip steel, and the lower branch pipe is located below the strip steel. The plurality of spray heads are respectively connected to the upper branch pipe and the lower branch pipe.

[0022] By adopting the above technical solution, the conveying pipe delivers the cleaning agent to the upper and lower distribution pipes. The upper and lower distribution pipes spray the cleaning agent onto the strip steel through the spray nozzles, so that the top and bottom of the strip steel can be sprayed and the oil stains on the strip steel surface can be cleaned.

[0023] In summary, the present invention has the following beneficial effects:

[0024] 1. First, use a spraying device to spray cleaning agent onto the surface of the strip steel. The cleaning agent will remove the oil stains from the surface of the strip steel. When the cleaning components are cleaning the strip steel, as one cleaning component detaches from the strip steel, the next cleaning component comes into contact with the strip steel. There will be cleaning agent residue between two adjacent cleaning components. The cleaning components in the next set of cleaning components will clean the residual cleaning agent. The cleaning components in at least two sets of cleaning components will clean the surface of the strip steel evenly, reducing the possibility of oil spots on the surface of the strip steel and improving product quality. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a cold-rolled strip steel cleaning mechanism.

[0026] Figure 2 This is a schematic diagram of the overall structure of the spraying device.

[0027] Figure 3 This is a partial structural diagram of the cleaning component.

[0028] Figure 4 This is a schematic diagram of the dewatering assembly.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Cleaning box; 11. Feed port; 12. Discharge port; 2. Conveying device; 3. Spraying device; 31. Conveying pipe; 32. Upper diversion pipe; 33. Lower diversion pipe; 34. Spray head; 4. Cleaning assembly; 41. Cleaning roller; 42. Connecting rod; 421. Roller; 43. Cleaning component; 5. Guide plate; 51. Guide part; 52. Limiting part; 6. Linkage assembly; 7. Squeezing assembly; 71. Lead screw; 72. Guide rod; 73. Extrusion block; 74. Actuating rod; 8. Limiting rod; 9. Spring. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] A cleaning mechanism for cold-rolled strip steel, as described in the following example. Figure 1 The system includes a cleaning box 1, a conveying device 2, a spraying device 3, and cleaning components 4. The cleaning box 1 has an inlet 11 and an outlet 12 at both ends, which are used for the input and output of strip steel, respectively. The conveying device 2 is provided in multiple sets along the direction of strip steel conveying, and all of them are connected to the inner wall of the cleaning box 1 for conveying strip steel. The spraying device 3 is connected to the inner wall of the cleaning box 1 for spraying cleaning agent to clean the strip steel. The cleaning components 4 are provided in at least two sets, and at least two sets of cleaning components 4 are connected to the cleaning box 1. At least two sets of cleaning components 4 are located on the side of the spraying device 3 away from the inlet 11. At least two sets of cleaning components 4 are arranged sequentially along the direction of strip steel conveying for uniformly cleaning the surface of the strip steel with cleaning agent. The spraying device 3 and the cleaning components 4 work together to uniformly clean the strip steel and remove the cleaning agent from the surface of the strip steel, reducing the possibility of oil stains on the surface of the strip steel.

[0033] Reference Figure 1 A set of conveying devices 2 includes two conveying rollers arranged in a vertical direction and rotatably connected to the cleaning box 1. The strip steel passes between the two conveying rollers and abuts against both conveying rollers.

[0034] Reference Figure 2 The spraying device 3 includes a conveying pipe 31, an upper diversion pipe 32, a lower diversion pipe 33, and a spray head 34. The upper diversion pipe 32 is located above the strip steel, and the lower diversion pipe 33 is located below the strip steel. The length direction of the upper diversion pipe 32 and the lower diversion pipe 33 is perpendicular to the conveying direction of the strip steel, and the length of the upper diversion pipe 32 and the lower diversion pipe 33 is greater than the width of the strip steel. The conveying pipe 31 is connected to the upper diversion pipe 32 and the lower diversion pipe 33, and it passes through the cleaning box 1 and is connected to a device for supplying cleaning agents.

[0035] Reference Figure 2Multiple spray heads 34 are provided, and the multiple spray heads 34 are divided into two groups. Multiple spray heads 34 in the same group are connected to the upper diversion pipe 32 and are arranged at equal intervals along the length of the upper diversion pipe 32. Multiple spray heads 34 in the other group are connected to the lower diversion pipe 33 and are evenly arranged along the length of the lower diversion pipe 33.

[0036] The cleaning agent is delivered by pressure through the conveying pipe 31 to the upper branch pipe 32 and the lower branch pipe 33. The upper branch pipe 32 and the lower branch pipe 33 spray the cleaning agent onto the strip steel through the spray head 34, so that the top and bottom of the strip steel can be sprayed and the oil stains on the surface of the strip steel can be cleaned.

[0037] Reference Figure 3 A set of cleaning components 4 includes a cleaning roller 41, a connecting rod 42, and a cleaning element 43. There are two cleaning rollers 41 with respect to the strip steel, and their length direction is parallel to the width direction of the strip steel. A motor is fixedly connected to the cleaning box 1. The motor drive passes through the cleaning box 1 and is fixedly connected to one of the cleaning rollers 41.

[0038] Reference Figure 1 and Figure 3 The cleaning roller 41 is fixedly connected to the linkage component 6, which is fixedly connected to another cleaning roller 41. In order to achieve the same purpose, the linkage component 6 can be a belt and pulley, a sprocket and a chain, etc. In this embodiment, a belt and pulley are selected.

[0039] Start the motor, and the motor drives one cleaning roller 41 to rotate. Through the cooperation of the belt and pulley, this cleaning roller 41 drives the other cleaning roller 41 to rotate.

[0040] Reference Figure 3 Multiple connecting rods 42 are provided, and two sets of multiple connecting rods 42 are provided. The two sets of connecting rods 42 are fixedly connected to two cleaning rollers 41 respectively. The connecting rods 42 in the same set are arranged at equal intervals along the circumference of the cleaning rollers 41. Rollers 421 are sleeved on the connecting rods 42, and the rollers 421 are rotatably connected to the connecting rods 42.

[0041] Reference Figure 3 Multiple cleaning components 43 are provided, and each cleaning component 43 is fixedly connected to multiple connecting rods 42 and abuts against the strip steel. To achieve the same purpose, the cleaning components 43 can be made of cleaning cloth, cleaning sponge, etc. In this embodiment, a cleaning sponge is selected. The side wall of the cleaning component 43 away from the connecting rod 42 is arc-shaped. When one cleaning component 43 detaches from the strip steel, the next cleaning component 43 abuts against the strip steel.

[0042] When cleaning component 4 cleans the strip, two cleaning rollers 41 rotate and drive two sets of connecting rods 42 to move. The two sets of connecting rods 42 drive multiple cleaning components 43 to move. The multiple cleaning components 43 clean the strip in sequence. The cleaning components 43 in the first set of cleaning components 4 will leave some cleaning agent. The cleaning components 43 in the second set of cleaning components 4 will clean the cleaning agent off the strip. The cleaning components 43 of at least two sets of cleaning components 4 cooperate with each other to clean the upper and lower surfaces of the strip, reducing the possibility of oil stains on the surface of the strip.

[0043] Reference Figure 1 and Figure 3 The cleaning box 1 is connected to a dewatering assembly 7. Multiple dewatering assemblies 7 are provided, and every two sets of dewatering assemblies 7 are symmetrically arranged about the strip. The multiple dewatering assemblies 7 are respectively located close to multiple cleaning rollers 41. One set of dewatering assemblies 7 squeezes multiple cleaning parts 43 connected to a cleaning roller 41.

[0044] Reference Figure 1 and Figure 3 A set of dewatering components 7 includes a lead screw 71, a guide rod 72, a squeezing block 73, and an actuating rod 74. The lead screw 71 is vertically arranged and its top is rotatably connected to the inner wall of the cleaning box 1. The guide rod 72 is vertically arranged and its top is fixedly connected to the inner wall of the cleaning box 1.

[0045] Reference Figure 4 The extrusion block 73 is sleeved on the lead screw 71 and the guide rod 72, and is threadedly connected to the lead screw 71 and slidably connected to the guide rod 72. The extrusion block 73 is inclined near the side wall of the cleaning component 43 and is inclined downward from one end near the lead screw 71 to the other end, and is smoothly arranged near the side wall of the cleaning component 43.

[0046] When the lead screw 71 rotates, the extrusion block 73 moves closer to the cleaning component 43 and extrudes the cleaning component 43, forcing out the cleaning agent absorbed by it. This allows the cleaning component 43 to absorb more cleaning agent when cleaning the strip again, resulting in a more uniform and thorough cleaning of the strip surface. This reduces the possibility of oil stains on the strip surface and improves product quality. The smooth sidewalls reduce friction on the cleaning component 43 and do not affect its movement during the extrusion process.

[0047] Reference Figure 4 The actuating rod 74 is horizontally set, with one end fixedly connected to the bottom end of the lead screw 71, and its side wall abutting against the circumferential wall of the roller 421. The cleaning box 1 is fixedly connected to the limiting rod 8, which is located on the same horizontal plane as the actuating rod 74. A spring 9 is provided between the limiting rod 8 and the actuating rod 74, with one end of the spring 9 fixedly connected to the limiting rod 8 and the other end fixedly connected to the actuating rod 74.

[0048] During the movement of the cleaning component 4, multiple connecting rods 42 sequentially abut against the actuating rod 74, causing the actuating rod 74 to rotate. The rotation of the actuating rod 74 causes the lead screw 71 to rotate, causing the extrusion block 73 to extrude the cleaning component 43. When the roller 421 on the connecting rod 42 disengages from the actuating rod 74, the actuating rod 74 will return to its original position due to the elastic force of the spring 9, and abut against the roller 421 on the next connecting rod 42, thereby extruding the next cleaning component 43, thus realizing the continuous operation of the extrusion component.

[0049] Reference Figure 3 A guide plate 5 is provided between the connecting rod 42 and the cleaning component 43. The guide plate 5 includes a guide part 51 and a limiting part 52. The length direction of the guide part 51 is parallel to the width direction of the strip steel, and its length is greater than the width of the strip steel. The bottom surface of the guide part 51 is fixedly connected to the connecting rod 42, and its top surface is fixedly connected to the cleaning component 43. The guide part 51 is inclined near the side wall of the cleaning component 43, and its inclination angle matches the side wall of the extrusion block 73 near the cleaning component 43. Two limiting parts 52 are provided. The two limiting parts 52 are fixedly connected to the two side walls of the guide part 51 in the length direction, and the top surface of the limiting part 52 away from the guide part 51 is higher than the top surface of the guide part 51.

[0050] When the extrusion block 73 approaches the cleaning component 43, the cleaning component 43 is squeezed by the extrusion assembly, and the cleaning agent absorbed by it is squeezed out of the cleaning component 43. The limiting part 52 cooperates with the guide part 51 so that the cleaning agent squeezed out by the cleaning component 43 flows down the inclined surface of the guide part 51 to the bottom of the cleaning box 1, and does not flow onto the strip steel, which facilitates the cleaning of the strip steel.

[0051] The operating principle of this application is as follows: The strip steel is fed into the cleaning box 1 through the feed hole 11, conveyed by multiple sets of conveying devices 2, and finally discharged from the cleaning box 1 through the discharge port. In the cleaning box 1, the strip steel cleaning agent is first sprayed onto the strip steel by the spraying device 3. The cleaning agent cleans the oil stains on the strip steel. Then, the motor drives the cleaning roller 41 to rotate. The cleaning roller 41 drives multiple connecting rods 42 to rotate circumferentially. The connecting rods 42 drive the cleaning components 43 to rotate circumferentially and clean the strip steel. First, the cleaning components 43 of the first set of cleaning components 4 clean the cleaning agent on the upper and lower surfaces of the strip steel. Since there is a gap between two adjacent cleaning components 43 in the first set of cleaning components 4, there will be cleaning agent residue between adjacent cleaning components 43. The cleaning components 43 in the next set of cleaning components 4 will clean all the residual cleaning agent. The cleaning components 43 in at least two sets of cleaning components 4 will clean the surface of the strip steel evenly, reducing the possibility of oil spots on the surface of the strip steel and improving product quality.

[0052] When the cleaning component 43 moves away from the strip, the multiple connecting rods 42 connected to each cleaning roller 41 abut against the actuating rod 74 in sequence. The rotation of the actuating rod 74 drives the lead screw 71 to rotate. The lead screw 71 drives the extrusion block 73 to approach the cleaning component 43 and extrude the cleaning component 43. The extruded cleaning agent flows through the guide plate 5 to the bottom of the cleaning box 1, so that the cleaning component 43 can absorb more cleaning agent when cleaning the strip again. This reduces the possibility of oil spots on the surface of the strip, makes the surface of the strip cleaner more uniform and cleaner, and improves product quality.

[0053] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A cleaning mechanism for cold-rolled strip steel, characterized in that: The system includes a cleaning box (1), which has an inlet (11) for feeding strip steel and an outlet (12) for discharging strip steel. The cleaning box (1) is equipped with multiple sets of conveying components that are spaced apart along the conveying direction of the strip steel. The cleaning box (1) is equipped with a spraying device (3) for spraying strip steel cleaning agent and at least two sets of cleaning components (4) for cleaning the surface of the strip steel. The at least two sets of cleaning components (4) are located on the side of the spraying device (3) away from the inlet (11). The at least two sets of cleaning components (4) are arranged sequentially along the conveying direction of the strip steel. A set of cleaning components (4) includes two cleaning rollers (41) symmetrically arranged about the strip, a connecting rod (42) connected to the cleaning rollers (41), and a cleaning component (43) connected to the connecting rod (42). The two cleaning rollers (41) are rotatably connected to the cleaning box (1). There are multiple connecting rods (42), which are divided into two groups. The two groups of connecting rods (42) are respectively connected to the two cleaning rollers (41). The multiple connecting rods (42) in the same group are evenly distributed along the circumference of the cleaning rollers (41). The multiple cleaning components (43) abut against the strip in sequence. The cleaning box (1) is connected to a motor that drives the cleaning rollers (41) to rotate. The two cleaning rollers (41) in the same group move synchronously through a linkage component (6). The cleaning box (1) is connected to a water-squeezing assembly (7) for squeezing out the cleaning agent in the cleaning component (43). Multiple sets of the water-squeezing assembly (7) are provided, and each pair of water-squeezing assemblies (7) are symmetrically arranged about the strip steel. The multiple sets of water-squeezing assemblies (7) are respectively arranged close to multiple cleaning rollers (41). A set of the dewatering assembly (7) includes a lead screw (71) rotatably connected to the cleaning box (1), a guide rod (72) connected to the cleaning box (1), a squeezing block (73) sleeved on the lead screw (71) and the guide rod (72), and an action rod (74) fixedly connected to the lead screw (71). The length direction of the guide rod (72) is parallel to the length direction of the lead screw (71). The squeezing block (73) is threadedly connected to the lead screw (71) and slidably connected to the guide rod (72). The action rod (74) abuts against and slides relative to the connecting rod (42).

2. The cold-rolled strip cleaning mechanism according to claim 1, characterized in that: The extrusion block (73) is inclined near the side wall of the cleaning component (43), and it is inclined downward from one end near the lead screw (71) to the end near the guide rod (72). A guide plate (5) is provided between the connecting rod (42) and the cleaning component (43). The guide plate (5) includes a guide part (51) and two symmetrically arranged limiting parts (52). The length of the guide part (51) is greater than the width of the strip. The guide part (51) is inclined near the side wall of the cleaning component (43), and its inclination angle matches the side wall of the extrusion block (73) near the cleaning component (43). The two limiting parts (52) are respectively connected to the two sides of the guide part (51) in the length direction. The guide part (51) is connected to both the connecting rod (42) and the cleaning component (43). The top of the limiting part (52) away from the guide part (51) is higher than the top of the guide part (51).

3. The cold-rolled strip cleaning mechanism according to claim 2, characterized in that: The inner wall of the cleaning box (1) is connected to a limiting rod (8) that is located on the same horizontal plane as the actuating rod (74). A spring (9) is provided between the limiting rod (8) and the actuating rod (74). One end of the spring (9) is connected to the limiting rod (8) and the other end is connected to the actuating rod (74).

4. A cold-rolled strip cleaning mechanism according to claim 3, characterized in that: A roller (421) is fitted on the connecting rod (42), and the roller (421) is rotatably connected to the connecting rod (42). The outer peripheral wall of the roller (421) abuts against the side wall of the actuating rod (74).

5. A cold-rolled strip cleaning mechanism according to claim 1, characterized in that: The spraying device (3) includes a conveying pipe (31) for conveying cleaning agent, an upper branch pipe (32) connected to the cleaning box (1), a lower branch pipe (33) connected to the cleaning box (1), and multiple spray heads (34) for spraying cleaning agent. The conveying pipe (31) is connected to both the upper branch pipe (32) and the lower branch pipe (33). The upper branch pipe (32) is located above the strip steel, and the lower branch pipe (33) is located below the strip steel. The multiple spray heads (34) are respectively connected to the upper branch pipe (32) and the lower branch pipe (33).

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