A roll surface cleaning device for a stainless steel cold-rolled skin pass roll

Abstract

The present application relates to a kind of roll surface cleaning device of stainless steel cold-rolled skin pass roll, including the body of multiple through holes being arranged inside, the base of dust suction device is provided with multiple dust suction hole being communicated with through hole, the contact surface of body and dust suction device base is provided with sealing cavity, the outer periphery of sealing cavity is provided with the sealing groove for sealing element embedding, under the driving of driving element, dust can be sucked from the end of through hole, and finally enter the dust suction hole in the base of dust suction device via sealing cavity.The present application has the advantages that: by being provided with the sealing cavity of communicating through hole and dust suction hole on the base of dust suction device on the body, sealing groove and sealing element are arranged on the outer periphery of sealing cavity, so that a sealed channel that can be formed to communicate through hole, sealing cavity and dust suction hole, sealing cavity eliminates the problem that dust suction is weakened and dust is accumulated due to alignment error of through hole and dust suction hole, and sealing groove and sealing element can ensure the sealing of sealed channel, avoid the attenuation of suction force.

Description

Technical Field

[0001] This invention relates to the field of cold rolling cleaning tools, and more specifically to a roller surface cleaning device for stainless steel cold rolling leveling rolls. Background Technology

[0002] After annealing and pickling, stainless steel cold-rolled strip needs to enter the leveling process. At this stage, leveling rollers are used to correct the strip's shape and optimize its surface gloss. During continuous production, the strip surface accumulates residual oil and fine metal debris from rolling, and dust from the workshop environment also continuously disperses. These foreign objects easily adhere to and accumulate on the surfaces of the upper and lower leveling rollers. When oil, metal shavings, and dust adhere to the roller surfaces, periodic spots and indentations are replicated on the strip surface during leveling. There are no online repair methods for these defects, forcing the finished product to be downgraded or scrapped, resulting in long-term and stable economic losses.

[0003] For example, Chinese invention patent ZL202511861895.2 (authorization announcement number CN121266871B), entitled "A Device for Removing Surface Deposits from Cold Rolling Mill Rolls," discloses a device capable of cleaning deposits from the surface of rolling mill rolls. The device uses a motor to power the synchronous rotation and revolution of the cleaning brush, thereby cleaning the deposits on the roll surface. Another commonly used method is to equip the upper and lower leveling rolls of a leveling machine with roller surface wipers. The main body of the wiper is a bakelite / PP material wiping plate with evenly spaced dust-suction holes. The outer side of the wiping plate is successively covered with a polishing cotton layer and a polishing mesh layer, and a constant pressure is applied to adhere to the surface of the leveling roll. The bottom of the wiping plate has openings for connecting to a dust-suction pipe, a negative pressure dust-suction device, and a dust collection filter bag. During operation, the polishing mesh layer can directly contact the roller surface for friction and grinding, removing oil stains and metal dust adhering to the roller surface. The resulting debris and existing foreign matter pass through the mesh openings of the polishing mesh and the gaps in the polishing cotton, then through the through-holes of the wiping plate, and are sucked into the dust collection filter bag under negative pressure, continuously maintaining the cleanliness of the roller surface. However, the aforementioned wiping plate has the following problems:

[0004] First, the holes on the suction port and the suction base are aligned manually. If misalignment occurs during assembly, it will affect the suction effect.

[0005] Secondly, the wiping plate only has dust extraction holes in some areas. During the cleaning process, oil and metal dust can easily get stuck in the blind spots without holes. The dust accumulated over a long period of time will increase the frictional resistance between the polishing layer and the leveling roller. The continuous friction will generate a lot of heat, which will locally burn the roller surface, forming irregular strip-shaped wiping marks that are transferred to the surface of the strip steel. The machine needs to be stopped for 1 to 2 hours to replace the entire wiping device, resulting in a loss of effective production time for the unit. The strip steel with the defective marks cannot be repaired and can only be downgraded or scrapped, resulting in continuous economic losses in both materials and production capacity.

[0006] Third, the wiping board made of bakelite or PP material is easily deformed and heavy (46kg), making it difficult to handle during assembly. There is a risk of personal injury and damage to spare parts if it falls during handling. Gaps will be created when the wiping board is assembled with the bottom vacuum base, which will further reduce the vacuuming effect.

[0007] Therefore, further improvements are needed to the structure of the roller surface cleaning device for stainless steel cold rolling leveling rolls. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide a roller surface cleaning device for stainless steel cold rolling flat roll with good cleaning effect, especially for the situation where the through holes and dust suction holes are misaligned during the assembly process.

[0009] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the roller surface cleaning device for the stainless steel cold rolling flat roll includes a body that can be assembled onto the base of a dust collection device. The body is provided with a plurality of through holes for dust suction. The base of the dust collection device is provided with a plurality of suction holes communicating with the through holes. The feature is that a sealing cavity is provided on the contact surface between the body and the base of the dust collection device. A sealing groove is provided on the outer periphery of the sealing cavity. A sealing element is embedded in the sealing groove. Under the drive of the driving element, dust can be sucked in from the end of the through hole under negative pressure and finally enters the suction hole of the base of the dust collection device through the sealing cavity.

[0010] To eliminate blind spots in dust collection, preferably, the through holes are evenly and spaced apart on the body, with connecting channels between adjacent through holes. By creating connecting channels between adjacent through holes, the originally independent and dispersed single-hole channels can be interconnected, forming a fully continuous dust collection channel with interconnected through holes and connecting channels. This significantly expands the coverage area of ​​negative pressure adsorption, increases the dust collection contact area of ​​the roller surface, and achieves complete negative pressure coverage of the wiping surface of the body without any dead angles.

[0011] Furthermore, the angle α formed by each of the connecting channels and the horizontal direction is 45°. By setting the connecting channels at a 45° angle from top to bottom, the airflow inside the through-holes and connecting channels can be optimized, thereby improving dust collection efficiency.

[0012] To improve sealing performance, preferably, the sealing groove is arranged in a ring around the outer periphery of the sealing cavity, and the sealing element is a sealing strip fitted into the sealing groove. By providing a ring-shaped sealing groove on the outer periphery of the sealing cavity, and embedding a sealing strip within the ring-shaped sealing groove, the body can achieve a smooth and flush fit with the base surface of the vacuum cleaner base, improving the sealing performance inside the sealing cavity and thus ensuring reliable vacuuming.

[0013] To facilitate cleaning of the leveling roller surface, preferably, the outer side of the main body is covered with a polishing mesh layer for adhering to and polishing the leveling roller surface, and a polishing cotton layer for cushioning is disposed between the polishing mesh layer and the main body. The outer polishing mesh layer can directly contact the leveling roller surface and polish away metal dust, stains, and other contaminants adhering to the roller surface, thereby achieving a clean and smooth roller surface; the polishing cotton layer can absorb and disperse the vibration and uneven pressure generated by the polishing mesh layer during high-speed rotation, thus preventing damage to the precision roller surface due to uneven pressure or vibration.

[0014] Furthermore, a flexible buffer layer is provided between the main body and the polishing cotton layer, with a thickness ranging from 6mm to 10mm. This flexible buffer layer has moderate hardness and good elastic deformation capability, allowing it to adaptively match the curvature and slight vibrations of the flat roller surface. This significantly improves the overall uniformity of the adhesion between the polishing mesh layer, the polishing cotton layer, and the roller surface, avoiding localized poor adhesion or excessive localized pressure. This ensures both uniform and stable grinding and dust removal effects while buffering hard compression friction, helping to reduce frictional temperature rise and further preventing the formation of strip-like wiping marks due to localized high temperatures. The thickness of this buffer layer needs to be maintained within a suitable range. If the buffer layer is too thick, it will reduce the cleaning efficiency of the polishing mesh layer, failing to effectively remove adhering substances from the roller surface. If the buffer layer is too thin, the high-frequency micro-vibrations generated during polishing will be directly transmitted to the roller surface, potentially damaging it.

[0015] To prevent deformation, the main body is preferably made of aluminum alloy. Aluminum alloy has high rigidity, is lightweight, and has strong resistance to deformation, preventing warping, deformation, and bulging of the sheet metal caused by long-term negative pressure stretching, roller extrusion, or workshop deformation. This ensures a smooth and even fit between the main body and the base of the dust collection device, guaranteeing subsequent sealing and precise dust collection. Furthermore, using an aluminum alloy base also prevents the material from falling during assembly due to handling difficulties, enhancing safety.

[0016] To improve connection strength, preferably, the main body is provided with mounting holes, and fasteners for connecting the main body and the base of the vacuum cleaner are installed in the mounting holes. The fasteners in the mounting holes ensure a secure connection between the main body and the base of the vacuum cleaner, preventing uneven pressure from affecting the airtightness of the sealing cavity or causing deformation of the main body.

[0017] Compared with the prior art, the advantages of the present invention are as follows: by providing a sealed cavity with a connecting hole on the main body and a suction hole on the base of the suction device, and by providing a sealing groove and a sealing element on the outer periphery of the sealed cavity, a sealed channel connecting the connecting hole, the sealed cavity and the suction hole can be formed. The sealed cavity eliminates the problem of weakened suction and dust accumulation caused by misalignment of the connecting hole and the suction hole. At the same time, the sealing groove and the sealing element cooperate with each other to ensure the sealing of the sealed channel and avoid the suction power from decreasing during the cleaning process, thus reducing the cleaning effect. Attached Figure Description

[0018] Figure 1 This is a top view of the roller surface cleaning device for the stainless steel cold rolling leveling roll in an embodiment of the present invention;

[0019] Figure 2 This is a longitudinal sectional view of the roller surface cleaning device for stainless steel cold rolling leveling rolls in an embodiment of the present invention.

[0020] In the diagram: 1. Body; 11. Through hole; 12. Sealing cavity; 13. Sealing groove; 14. Connecting channel; 15. Mounting hole; 2. Sealing element; 3. Polishing mesh layer; 4. Polishing cotton layer; 5. Buffer layer. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figure 1 and Figure 2As shown, the main structure of the stainless steel cold-rolled leveling roll cleaning device in this embodiment is a body 1 for wiping the roll surface of the leveling roll. The body 1 is made of aluminum alloy substrate. Aluminum alloy substrate has high rigidity, light weight and strong resistance to deformation. It can avoid problems such as warping, deformation and plate arching of the body 1 due to long-term negative pressure pulling, roll surface squeezing or workshop deformation. This makes the contact surface of the body 1 and the base of the dust collection device (not shown in the figure) flat and fit together, thereby ensuring subsequent sealing and precise dust collection. At the same time, the use of aluminum alloy substrate can also avoid the problem of falling due to difficult handling during assembly, which is safer. The body 1 can be assembled onto the base of the dust collection device. The body 1 is provided with mounting holes 15. Fasteners (not shown in the figure) for connecting the body 1 and the base of the dust collection device are provided in the mounting holes 15. The fasteners can make the body 1 and the base of the dust collection device firmly connected, avoiding the impact of uneven pressure on the airtightness of the sealing cavity 12 or the deformation of the body 1. In this embodiment, the preferred fastener is a low-cost and easy-to-install bolt. The main body 1 has multiple through holes 11 for dust suction, and the base of the dust collection device has multiple suction holes communicating with the through holes 11. The through holes 11 are evenly and spaced apart on the main body 1, and connecting channels 14 are provided between adjacent through holes 11. By creating connecting channels 14 between adjacent through holes 11, the originally independent and dispersed single-hole channels can be interconnected, forming a fully connected suction channel linking the through holes 11 and the connecting channels 14. This significantly expands the coverage area of ​​the negative pressure adsorption, increases the contact area of ​​the roller surface for dust suction, and achieves complete negative pressure coverage of the main body 1 without dead angles. The angle α formed by each connecting channel 14 and the horizontal direction is preferably 45°. This angle can optimize the airflow inside the through holes 11 and the connecting channels 14, thereby improving the dust collection efficiency. (Reference) Figure 2 A sealing cavity 12 is provided on the contact surface between the main body 1 and the base of the vacuum cleaner. A sealing groove 13 is arranged in a ring around the outer periphery of the sealing cavity 12, and a sealing element 2 is embedded in the sealing groove 13. In this embodiment, the sealing element 2 is preferably a sealing strip. The sealing groove 13 and the sealing strip cooperate with each other to make the main body 1 and the base surface of the vacuum cleaner base flat and fit together, improving the sealing performance inside the sealing cavity 12, thereby ensuring reliable vacuuming. Under the drive of the driving component, dust can be sucked in from the end of the through hole 11 under negative pressure, and finally enters the vacuuming hole of the base of the vacuum cleaner through the sealing cavity 12. The function of the sealing cavity 12 is to connect the through hole 11 and the vacuuming hole to form a sealed channel. Even if there is a slight assembly misalignment error between the through hole 11 and the vacuuming hole, the sealing cavity 12 and the sealing strip can still ensure the airtightness of the sealed channel and prevent local suction power attenuation. Structurally, it replaces manual precise alignment and eliminates the problems of weakened vacuuming and dust accumulation caused by misalignment of the through hole 11 and the vacuuming hole.

[0023] To facilitate cleaning of the leveling roller surface, the outer side of the body 1 is covered with a polishing mesh layer 3 for adhering to and polishing the leveling roller surface. This polishing mesh layer 3 can directly contact the leveling roller surface and polish away metal dust, stains, and other contaminants adhering to the roller surface, thereby achieving a clean and smooth roller surface. A polishing cotton layer 4 is disposed between the polishing mesh layer 3 and the body 1 to absorb and disperse the vibration and uneven pressure generated by the polishing mesh layer 3 during high-speed rotation, thus preventing damage to the precision roller surface due to uneven pressure or vibration. Considering that the polishing cotton layer 4 may age and harden after long-term use, this embodiment provides a [missing information - likely a design element or material] between the body 1 and the polishing cotton layer 4. The flexible buffer layer 5, preferably Shore 60° high elasticity rubber in this embodiment, is moderately soft and hard, has good elastic deformation ability, and is resistant to temperature and aging. The buffer layer 5 can adaptively match the curvature and slight jump of the flat roller surface, greatly improving the overall uniformity of the bonding between the polishing mesh layer 3, the polishing cotton layer 4 and the roller surface. The buffer layer 5, polishing mesh layer 3 and polishing cotton layer 4 form a combined structure of rigid support and flexible buffer, avoiding local loose bonding and excessive local pressure. It not only ensures uniform and stable grinding and dust removal effect, but also buffers hard extrusion friction, helps reduce friction temperature rise, and further avoids the defect of strip-shaped wiping marks caused by local high temperature. The thickness of the buffer layer 5 needs to be maintained between 6mm and 10mm. When the thickness of the buffer layer 5 is too large, it will reduce the cleaning efficiency of the polishing mesh layer 3 and will not be able to effectively remove the adhering substances on the roller surface. When the thickness of the buffer layer 5 is too small, the high-frequency micro-vibration generated by the polishing mesh layer 3 during polishing will be directly transmitted to the roller surface, thereby damaging the roller surface. Therefore, in this embodiment, the preferred thickness of the buffer layer 5 is 8mm.

[0024] The working principle of the stainless steel cold-rolled leveling roll surface cleaning device in this embodiment is as follows: When the surface of the leveling roll needs to be cleaned, the main body 1 is fixed to the base of the dust collection device, the drive is activated, and under negative pressure, the dust and impurities generated by the polishing mesh layer 3 grinding the surface of the leveling roll can be sucked into the dust collection hole on the base through the end of the through hole 11 via the connecting channel 14 and the sealing cavity 12. At this time, the roll surface can be restored to cleanliness and flatness, avoiding the appearance of strip-shaped indentations on the strip. This stainless steel cold-rolled leveling roll surface cleaning device completely solves the 13% probability of wiping marks defect in the prior art, eliminates the need for frequent machine shutdowns to replace the main body, prevents strip downgrading and scrapping losses, and eliminates the need for precise manual alignment, reducing the risk of assembly errors and adapting to long-term continuous high-speed production of cold-rolled leveling units.

Claims

1. A roller surface cleaning device for a stainless steel cold-rolled leveling roll, comprising a body (1) that can be mounted on a base of a dust collection device, wherein the body (1) is provided with a plurality of through holes (11) for dust suction, and the base of the dust collection device is provided with a plurality of suction holes communicating with the through holes (11), characterized in that: A sealing cavity (12) is provided on the contact surface between the main body (1) and the base of the vacuum cleaner. A sealing groove (13) is provided on the outer periphery of the sealing cavity (12). A sealing element (2) is embedded in the sealing groove (13). Under the drive of the driving element, dust can be sucked in from the end of the through hole (11) under negative pressure and finally enter the suction hole of the base of the vacuum cleaner through the sealing cavity (12).

2. The roller surface cleaning device for stainless steel cold-rolled leveling rolls as described in claim 1, characterized in that: Each of the through holes (11) is evenly and spaced on the body (1), and a connecting channel (14) is provided between adjacent through holes (11).

3. The roller surface cleaning device for stainless steel cold-rolled leveling rolls as described in claim 2, characterized in that: The angle α formed by each of the connecting channels (14) and the horizontal direction is 45°.

4. The roller surface cleaning device for stainless steel cold rolling leveling rolls as described in claim 1, characterized in that: The sealing groove (13) is arranged in a ring around the outer periphery of the sealing cavity (12), and the sealing element (2) is a sealing strip fitted into the sealing groove (13).

5. The roller surface cleaning device for stainless steel cold-rolled leveling rolls as described in claim 1, characterized in that: The outer side of the body (1) is covered with a polishing mesh layer (3) for adhering to the surface of the flat roller and for polishing. A polishing cotton layer (4) for buffering is provided between the polishing mesh layer (3) and the body (1).

6. The roller surface cleaning device for stainless steel cold-rolled leveling rolls as described in claim 5, characterized in that: A flexible buffer layer (5) is provided between the main body (1) and the polishing cotton layer (4), and the thickness of the buffer layer (5) is in the range of 6mm to 10mm.

7. The roller surface cleaning device for stainless steel cold-rolled leveling rolls as described in any one of claims 1 to 6, characterized in that: The body (1) is made of aluminum alloy substrate.

8. The roller surface cleaning device for stainless steel cold-rolled leveling rolls as described in claim 7, characterized in that: The main body (1) is provided with a mounting hole (15), and a fastener for connecting the main body (1) and the base of the vacuum cleaner is provided in the mounting hole (15).

Images