Four-roller wiper
The four-roll cleaner system addresses inefficiencies in two-roll cleaners by implementing double-sided cleaning with four engaging rolls and air blowers, enhancing oil removal and reducing waste.
Patent Information
- Application Number
- CN202421653586.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-07-12
AI Technical Summary
Existing two-roll cleaners for removing rolling oil from steel surfaces after rolling are inefficient, leading to residual oil on the steel, which causes misalignment during rolling and significant oil waste.
A four-roll cleaner system with two pairs of rolls, one above and one below the steel, ensuring double-sided cleaning by four rolls that engage in rolling contact, accompanied by air blowers to enhance oil removal.
The four-roll system significantly improves oil removal efficiency, reducing misalignment and oil waste, ensuring cleaner steel surfaces for smooth rolling and oil recovery.
Smart Images
Figure CN223097627U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of equipment for subsequent treatment of strip rolling, and more specifically, to a four-roll wiper. Background Art
[0002] During the rolling process of steel, it is usually necessary to spray a layer of rolling oil on the surface of the material before rolling to achieve rolling protection of the material. After rolling, it is also necessary to wipe the rolling oil on the surface of the material clean to ensure that the rolled steel can be smoothly coiled. At the same time, the rolling oil can be recycled for subsequent rolling of steel.
[0003] Currently, in the prior art, a typical rolling oil wiping structure is usually a two-roll wiper. During the steel rolling process, the two-roll wiper is used to wipe the surface of the running strip to wipe the rolling oil on the strip surface clean and collect it. The two-roll wiper adopts an upper and lower roll box structure, and a single roll is moved up and down by a hydraulic cylinder. At the same time, a gear and rack synchronization mechanism is provided to ensure the synchronization of the opening and closing of the upper roll box.
[0004] Although the two-roll wiper solves the problem of wiping and cleaning the rolling oil on the strip surface to a certain extent, there are still certain technical problems. For example, the wiping effect of the two-roll wiper is poor, and there is a lot of residual rolling oil on the strip surface, resulting in uneven coiling of the strip during the coiling process, which causes the strip to deviate during the rolling process. At the same time, it will also cause a large amount of waste of rolling oil. Summary of the Utility Model
[0005] (I) Technical Problem
[0006] In summary, how to improve the cleaning effect of rolling oil after steel rolling has become an urgent problem for those skilled in the art.
[0007] (II) Technical Solution
[0008] In order to achieve the above object, the utility model provides the following technical solution:
[0009] The utility model provides a four-roll wiper. In the utility model, the four-roll wiper includes a wiping unit. Among them, the wiping unit includes a wiping roll that can contact the strip surface and is used to wipe the rolling oil on the strip surface, and a cleaning roll that is used to remove the rolling oil on the surface of the wiping roll. The cleaning roll is in rolling contact with the wiping roll; there are four wiping units, two of which are arranged side by side in the front and back along the strip wiping direction and form an upper roll box, and the other two wiping units are arranged side by side in the front and back along the strip wiping direction and form a lower roll box. The upper roll box and the lower roll box are arranged opposite to each other up and down and form a wiping gap for the strip to pass through.
[0010] Preferably, in the four-roll wiper provided by the present utility model, the four-roll wiper includes a frame; the upper roll box includes an upper roll frame, and the wiping roll and the cleaning roll constituting the upper roll box are both arranged on the upper roll frame; a lifting rack is arranged on the upper roll frame, at least two lifting racks are arranged, and all the lifting racks are arranged at intervals along the upper roll frame. A driving gear shaft is rotatably arranged on the frame, and a driving gear meshing with the lifting rack is arranged on the driving gear shaft, and all the lifting racks are simultaneously driven to act by the driving gear shaft.
[0011] Preferably, in the four-roll wiper provided by the present utility model, the lower roll box includes a lower roll frame, and the wiping roll and the cleaning roll constituting the lower roll box are both arranged on the lower roll frame; the lower roll frame is arranged on the frame in a vertically movable manner, and a lower roll frame driving device is arranged on the frame for driving the lifting of the lower roll frame.
[0012] Preferably, in the four-roll wiper provided by the present utility model, the lower roll frame driving device is a cylinder or a hydraulic cylinder; two lower roll frame driving devices are arranged and are respectively arranged near both ends of the lower roll frame.
[0013] Preferably, in the four-roll wiper provided by the present utility model, the lower roll frame driving device is connected to the lower roll frame through a hinge structure.
[0014] Preferably, in the four-roll wiper provided by the present utility model, an elastic pre-tightening device is arranged on the frame, the elastic pre-tightening device includes an elastic movable end, and the elastic movable end is connected to the lower roll frame and is used to provide a vertically upward elastic pre-tightening force to the lower roll frame.
[0015] Preferably, in the four-roll wiper provided by the present utility model, four cleaning rolls are in a group. In the same group of cleaning rolls, two cleaning rolls are installed on the same installation shaft, the two installation shafts are symmetrically arranged on both sides of the wiping roll, the two installation shafts are installed on a platform frame, and a lifting device is connected to the platform frame, and the lifting device is fixedly arranged on the upper roll frame and the lower roll frame.
[0016] Preferably, in the four-roll wiper provided by the present utility model, along the strip wiping direction, one end of the wiping gap formed by the upper roll box and the lower roll box is a wiping inlet and the other end is a wiping outlet; a wiping inlet guard plate and a wiping outlet guard plate are arranged on the frame.
[0017] Preferably, in the four-roll wiper provided by the present utility model, a purging system is further included. The purging system includes a mounting plate and an air purging nozzle. The air purging nozzle is disposed on the mounting plate and is used for purging the strip steel. Along the wiping direction of the strip steel, the mounting plate is disposed at the end of the wiping gap.
[0018] Preferably, in the four-roll wiper provided by the present utility model, there are two mounting plates, and the two mounting plates are symmetrically arranged up and down. The number of the air purging nozzles disposed on the mounting plate is adjustable. The included angle between the outlet axis of the air purging nozzle and the horizontal plane is 30° - 60° and the angle is adjustable.
[0019] (III) Beneficial effects
[0020] As can be seen from the above structural design, the present utility model provides a four-roll wiper. The four-roll wiper includes a wiping unit. The wiping unit includes a wiping roll that can contact the surface of the strip steel and is used for wiping the rolling oil on the surface of the strip steel, and a cleaning roll that is used for removing the rolling oil on the surface of the wiping roll. The cleaning roll and the wiping roll are in rolling contact. There are four wiping units. Two of the wiping units are arranged side by side in the front and back along the wiping direction of the strip steel and form an upper roll box. The other two wiping units are arranged side by side in the front and back along the wiping direction of the strip steel and form a lower roll box. The upper roll box and the lower roll box are arranged opposite to each other up and down and form a wiping gap for the strip steel to pass through. Through the above structural design, the present utility model provides a total of four wiping units, and each wiping unit is provided with a wiping roll, that is, the present utility model provides a total of four wiping rolls to wipe the rolling oil on the surface of the strip steel. Compared with the traditional two-roll structure, the number of wiping rolls in the present utility model is doubled. In this way, the upper and lower surfaces of the strip steel can be wiped at least twice, greatly improving the wiping effect on the surface of the strip steel. The structural design of the present utility model is reasonable and the operation is reliable, significantly improving the cleaning effect of the rolling oil after steel rolling. Description of the drawings
[0021] The specification drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. Among them:
[0022] Figure 1 is an axonometric view of a four-roll wiper in an embodiment of the present utility model;
[0023] Figure 2 is a cross-sectional view of a partial structure of a four-roll wiper in a front view perspective in an embodiment of the present utility model;
[0024] Figure 3This is a cross-sectional view of another partial structure of the four-roll wiper in a front view in one embodiment of the present utility model;
[0025] Figure 4 This is a cross-sectional view of a partial structure of the four-roll wiper in a side view in one embodiment of the present utility model;
[0026] Figure 5 This is a schematic structural diagram of the cleaning roller in one embodiment of the present utility model.
[0027] In Figures 1 to 5 the corresponding relationship between the component names and the reference numerals is as follows:
[0028] wiper roller 1, cleaning roller 2, frame 3, upper roller frame 4, lifting rack 5, driving gear shaft 6,
[0029] lower roller frame 7, lower roller frame driving device 8, elastic pre-tightening device 9, mounting plate 10, air purge nozzle 11. Detailed implementation manners
[0030] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present utility model rather than limiting the present utility model. In fact, those skilled in the art will appreciate that modifications and variations can be made to the present utility model without departing from the scope or spirit thereof. For example, features shown or described as part of one embodiment can be used in another embodiment to yield yet another embodiment. Therefore, it is intended that the present utility model cover such modifications and variations that fall within the scope of the appended claims and their equivalents.
[0031] In the description of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model rather than requiring the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model. The terms "connected" and "coupled" used in the present utility model should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.
[0032] Please refer to Figures 1 to 5 , where Figure 1 is an axonometric view of the four-roll wiper in one embodiment of the present utility model; Figure 2 is a cross-sectional view of a partial structure of the four-roll wiper in a front view in one embodiment of the present utility model; Figure 3It is a cross-sectional view of another local structure of a four-roller wiper in an embodiment of the utility model from a main viewing angle; Figure 4 It is a cross-sectional view of the local structure of a four-roller wiper in an embodiment of the utility model from a side view perspective; Figure 5 It is a schematic structural diagram of a cleaning roller in one embodiment of the utility model.
[0033] The utility model provides a four-roller wiper, which is applied to a strip steel rolling production line and can wipe the rolling oil on the surface of the strip steel (after rolling), thereby obtaining a strip steel with a clean surface to ensure smooth coiling of the subsequent strip steel (without deviation).
[0034] In order to facilitate the structural description, the utility model defines the parts with the same structure on the four-roll wiper as wiping units, and each wiping unit can perform surface oiling operation on the strip. In the prior art, there are two wiping rollers 1 (equivalent to the wiping units in this application), and the wiping effect is poor. In the utility model, there are four wiping units, and they are arranged in a "two-to-two" arrangement, which is equivalent to wiping the strip twice, thus achieving the purpose of improving the wiping effect.
[0035] Specifically, the wiping unit has the following structure: it includes a wiping roller 1 that can contact the surface of the steel strip and is used to wipe the rolling oil on the surface of the steel strip, and a cleaning roller 2 that is used to remove the rolling oil on the surface of the wiping roller 1, and the cleaning roller 2 is in rolling contact with the wiping roller 1. In the utility model, the wiping roller 1 is a long straight round roller structure, and its two ends are mounted on the roller frame (the roller frame includes an upper roller frame 4 and a lower roller frame 7) through a bearing seat (backing bearing). The length of the wiping roller 1 is not less than the width of the steel strip, so that the steel strip can be wiped without dead angles. The cleaning roller 2 is capable of removing the rolling oil on the wiping roller 1 (the wiping roller 1 is in contact with the surface of the strip, and the rolling oil on the surface of the strip can be taken away by the rotation of the wiping roller 1, and the rolling oil is attached to the wiping roller 1 from the surface of the strip). In order to facilitate the discharge of the rolling oil, the cleaning roller 2 adopts a small roller structure (the length of the cleaning roller 2 is much smaller than the length of the wiping roller 1), so that part of the rolling oil on the wiping roller 1 is taken away by the cleaning roller 2, and the other part is squeezed to the side by the cleaning roller 2 (squeezed to the side of the cleaning roller 2), and a large amount of rolling oil squeezed to the side is gathered and thrown off by the rotation of the wiping roller 1, thereby achieving the cleaning of the wiping roller 1.
[0036] In the utility model, designers can calculate the flow path of the rolling oil after it separates from the wiping roller 1 according to the structure and operation of the equipment, and set structures such as shielding and guide grooves according to the calculated path to collect most of the rolling oil for recycling and reuse of the rolling oil.
[0037] As described above, the wiping units of the present utility model are arranged in four, thereby improving the wiping effect on the rolling oil on the strip surface. The specific arrangement structure of the wiping units is as follows: Among the four wiping units, two of them are arranged side by side in the front and back along the strip wiping direction and form an upper roller box, and the other two wiping units are arranged side by side in the front and back along the strip wiping direction and form a lower roller box. The upper roller box and the lower roller box are arranged opposite to each other up and down and form a wiping gap for the strip to pass through.
[0038] For the four-roller wiper, it includes a main frame, that is, the frame 3. The frame 3 is made of steel structure. The present utility model does not limit the specific structure of the frame 3, as long as it can install other components of the present utility model and meet the wiping requirements of the strip. As described above, the wiping of the strip by the present utility model is divided into upper side wiping and lower side wiping. For the upper side wiping, the present utility model provides an upper roller box, and for the lower side wiping, the present utility model provides a lower roller box. Both the upper roller box and the lower roller box are arranged on the frame 3. Both the upper roller box and the lower roller box are provided with wiping rollers and cleaning rollers 2. For the convenience of structural description, the present utility model will use the upper wiping roller, the upper cleaning roller 2, the lower wiping roller and the lower cleaning roller 2 in the subsequent structural description. The four-roller wiper includes a frame 3. The upper roller box includes an upper roller frame 4. The upper roller frame 4 is a metal crossbeam structure and is movably arranged up and down on the frame 3. The wiping rollers (upper wiping rollers) and cleaning rollers 2 (upper cleaning rollers 2) that make up the upper roller box are both arranged on the upper roller frame 4. The wiping roller 1 is arranged on the upper roller frame 4 through a bearing seat. At the same time, the present utility model also arranges a driving device on the upper roller frame 4 for driving the rotation of the wiping roller. For the up and down driving of the upper roller frame 4, the present utility model adopts the following structure: The upper roller frame 4 is provided with lifting racks 5 (the lifting racks 5 are fixedly arranged on the upper roller frame 4). There are at least two lifting racks 5 (the optimal structure is to arrange two). The two lifting racks 5 are respectively arranged near both ends of the upper roller frame 4. All the lifting racks 5 are arranged at intervals along the upper roller frame 4. A driving gear shaft 6 is rotatably arranged on the frame 3, and a driving gear meshing with the lifting rack 5 is arranged on the driving gear shaft 6. By driving all the lifting racks 5 to act simultaneously through the driving gear shaft 6, it is ensured that the upper roller frame 4 can be lifted and lowered horizontally. Of course, the present utility model can also adopt a hydraulic cylinder or a pneumatic cylinder to drive the upper roller frame 4 up and down.
[0039] In the embodiment of the present utility model that adopts the gear-rack driving method to realize the movement of the upper roller frame 4, the present utility model also arranges a limit track on the frame 3. The lifting rack 5 is slidably clamped in the limit track. In this way, the limit track can also limit the lifting movement of the lifting rack 5 (the upper roller frame 4) and improve the stability of its movement.
[0040] The structure of the lower roll box is basically the same as that of the upper roll box, and the lower roll box and the upper roll box are mirror - set in the vertical direction. Specifically, the lower roll box includes a lower roll frame 7 (the lower roll frame 7 is a metal cross - beam structure). The wiping roll and the cleaning roll 2 that make up the lower roll box are both arranged on the lower roll frame 7. The lower roll frame 7 is movably arranged up and down on the frame 3. A lower roll frame driving device 8 is arranged on the frame 3 for driving the lifting of the lower roll frame 7. In the present utility model, the movement stroke of the upper roll frame 4 is greater than that of the lower roll frame 7, and the movement stroke of the lower roll frame 7 is shorter. Therefore, the present utility model can adopt more driving methods to realize the up - and - down driving of the lower roll frame 7. For example: the present utility model can design the lower roll frame driving device 8 as a cylinder or a hydraulic cylinder, and two lower roll frame driving devices 8 are arranged and are respectively arranged near both ends of the lower roll frame 7. Of course, the present utility model can also adopt the gear - rack driving method used for the upper roll frame 4 to drive the lower roll frame 7 to lift, and this structure can better ensure the smoothness of the horizontal lifting of the lower roll frame 7.
[0041] When the lower roll frame driving device 8 is a cylinder or a hydraulic cylinder, the lower roll frame driving device 8 is connected to the lower roll frame 7 through a hinge structure. Specifically, hinge seats are arranged at positions near both ends of the lower roll frame 7. A connecting sleeve is arranged at the movable shaft end of the cylinder or the hydraulic cylinder, and the connecting sleeve and the hinge seat are connected through a hinge shaft.
[0042] In the present utility model, after the upper roll frame 4 moves in place, it will remain fixed. A certain gap is maintained between the lower roll frame 7 and the upper roll frame 4 for the passage of the strip steel. During the passage of the strip steel, the wiping roll wipes the rolling oil. The thickness of the strip steel will have small floating changes. In order to adapt to this thickness change, the present utility model adopts the following design concept: the lower roll frame 7 has a certain elasticity relative to the frame 3, and the upper roll frame 4 is fixedly arranged relative to the frame 3. In this way, the lower roll frame 7 can elastically descend or elastically ascend according to the thickness of the strip steel, so that the upper wiping roll and the lower wiping roll can be used to contact the surface of the strip steel.
[0043] Specifically, the utility model is provided with an elastic pre-tightening device 9 on the frame 3. The elastic pre-tightening device 9 includes an elastic movable end, and the elastic movable end is connected to the lower roller frame 7 and used to provide an upward vertical elastic pre-tightening force to the lower roller frame 7. The elastic pre-tightening device 9 includes a spring seat, a spring, and a docking shaft seat. The spring seat is provided with an installation hole according to the cross-sectional diameter size of the spring, and the spring is installed in the installation hole. The spring seat is fixedly arranged on the frame 3. The docking shaft seat includes a docking plate, and a telescopic shaft is arranged on the docking plate. The docking plate is installed on the lower roller frame 7, and the end of the telescopic shaft passes through the spring and is connected to the bottom of the installation hole. The lower roller frame 7 is hinged to the lower roller frame driving device 8 (by designing the structure of the hinge, the hinge can have a certain amount of movement in the vertical direction, so as to meet the elastic movement requirements of the lower roller frame 7). At the same time, an elastic pre-tightening device 9 is also arranged between the lower roller frame 7 and the frame 3, so that an elastic connection between the lower roller frame 7 and the frame 3 can be realized.
[0044] The wiping roller 1 is a long straight round roller structure, and its length is greater than the width of the strip steel. The cleaning roller 2 adopts a small round roller structure, and there is also a certain gap between the cleaning rollers 2, so that the rolling oil on the cleaning rollers 2 can be extruded to the side and separated from the cleaning rollers 2 under the rotational movement of the cleaning rollers 2. Specifically, in the utility model, four cleaning rollers 2 are taken as a group. In the same group of cleaning rollers 2, two cleaning rollers 2 are installed on the same installation shaft, and the two installation shafts are symmetrically arranged on both sides of the wiping roller 1. The two installation shafts are installed on a platform, and a lifting device is connected to the platform. The lifting device is fixedly arranged on the upper roller frame 4 and the lower roller frame 7. Specifically, the platform connecting the lifting device is a cylinder or a hydraulic cylinder.
[0045] Further, along the strip steel wiping direction, one end of the wiping gap formed by the upper roller box and the lower roller box is the wiping inlet and the other end is the wiping outlet; a wiping inlet guard plate and a wiping outlet guard plate are arranged on the frame 3, and both the wiping inlet guard plate and the wiping outlet guard plate are of steel plate structure. Intermediate guard plates are also arranged in the upper roller box and the lower roller box, and the intermediate guard plates are arranged between two cleaning rollers 2 in the upper roller box and between two cleaning rollers 2 in the lower roller box.
[0046] The above structural design realizes the cleaning of the rolling oil on the strip surface through the cleaning roller 2, and the present utility model is provided with four cleaning rollers 2 to improve the cleaning effect. In order to further improve the cleaning effect of the rolling oil, the present utility model also provides a purging system, which includes a mounting plate 10 and an air purging nozzle 11. The air purging nozzle 11 is arranged on the mounting plate 10 and is used for purging the strip. Along the wiping direction of the strip, the mounting plate 10 is arranged at the end of the wiping gap. Specifically, there are two mounting plates 10, and the two mounting plates 10 are symmetrically arranged up and down; the number of air purging nozzles 11 arranged on the mounting plate 10 is adjustable; the included angle between the outlet axis of the air purging nozzle 11 and the horizontal plane is 30° - 60° and the angle is adjustable.
[0047] The purpose of the present utility model is to provide a four-roll wiper, and the use effect of the four-roll wiper is: by improving the wiping effect of the rolling oil on the strip surface, the deviation of the strip during rolling is reduced, and the loss of the rolling oil is reduced.
[0048] Aiming at the deficiencies of the prior art (the wiping effect of two rolls is poor), the present utility model provides a four-roll wiper capable of improving the wiping effect of the rolling oil. In the present utility model, the four-roll wiper is composed of four wiping rollers 1, which are arranged in two upper and two lower configurations, that is, two wiping rollers 1 are arranged above the strip (the strip here refers to the strip that needs to be wiped after the rolling process), and two wiping rollers 1 are arranged below the strip. The wiping roller 1 is supported by a backing bearing, and the support bearing is connected to a cylinder, and the cylinder can be controlled separately according to the rolling parameters (speed, width, thickness) to ensure the support of the wiping roller 1 in the entire width direction of the strip.
[0049] For the convenience of the maintenance of the wiper, the roller box can be quickly pushed in and pulled out, and an air purging system is provided. The opening and closing operations are performed by a hydraulic cylinder, and a gear rack is used to ensure the synchronization of the opening and closing of the upper roller box. Specifically, lifting racks 5 are symmetrically and fixedly arranged at both ends of the upper roller box, a driving gear shaft 6 is arranged on the frame 3, and the driving gear shaft 6 meshes with the two lifting racks 5. The synchronous lifting of both ends of the upper roller box can be achieved through the driving gear shaft 6. Each roller and its backing bearing are installed in a roller box to ensure quick replacement.
[0050] In the present utility model, the set value of the cylinder pressure can be calculated by the PLC according to the rolling speed. When the rolling speed is the maximum, the air pressure is the maximum, and the pressure is controlled by a proportional valve. The number of cylinders put into use (4 or 8) is adjusted according to the width of the strip. An air purging system is provided to remove the oil at the edges of the strip. When the rolling stops, the air purging stops. The air purging nozzle (low-noise air knife) performs a linear fan-shaped purging.
[0051] In addition, a set of copper rollers (two in total) can be arranged before the wiping inlet of the present utility model. The two copper rollers are arranged vertically. The two copper rollers can be driven by a cylinder or a hydraulic cylinder to move closer or apart. The diameter of the copper rollers is larger than that of the wiping rollers. When wiping the strip steel, the copper rollers are in a closed state, which can not only prevent the rolling oil from splashing outside, but also have a certain oil scraping effect (slightly scraping the oil. The rolling oil on the surface of the strip steel is mainly wiped and cleaned by the wiping rollers).
[0052] The present utility model aims to overcome the defects in the use of the original two-roller wiper, and the purpose is to provide a structural device of a four-roller wiper with simple replacement and good oil removal effect. Through a new control method, the rolling oil on the surface of the strip steel can be more effectively removed, the strip breakage can be reduced, and the consumption of rolling oil can be reduced.
[0053] As can be seen from the above structural design, the present utility model provides a four-roller wiper. The four-roller wiper includes a wiping unit. The wiping unit includes a wiping roller 1 that can contact the surface of the strip steel and is used for wiping the rolling oil on the surface of the strip steel, and a cleaning roller 2 that is used for removing the rolling oil on the surface of the wiping roller 1. The cleaning roller 2 is in rolling contact with the wiping roller 1. Four wiping units are provided. Two of the wiping units are arranged side by side in the front and back along the strip steel wiping direction and form an upper roller box. The other two wiping units are arranged side by side in the front and back along the strip steel wiping direction and form a lower roller box. The upper roller box and the lower roller box are arranged opposite to each other up and down and form a wiping gap for the strip steel to pass through.
[0054] Through the above structural design, the present utility model provides a total of four wiping units, and each wiping unit is provided with a wiping roller. That is, the present utility model provides a total of four wiping rollers to wipe the rolling oil on the surface of the strip steel. Compared with the traditional two-roller structure, the number of wiping rollers of the present utility model has doubled, so that the upper and lower surfaces of the strip steel can be wiped at least twice, greatly improving the wiping effect on the surface of the strip steel. The structural design of the present utility model is reasonable and operates reliably, significantly improving the cleaning effect of the rolling oil after steel rolling.
[0055] The above is only the preferred embodiment of the present utility model and is not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. A four-roll wiper, characterized in that it includes a wiping unit; The wiping unit includes a wiping roll (1) that can contact the surface of the strip steel and is used to wipe the rolling oil on the surface of the strip steel, and a cleaning roll (2) that is used to remove the rolling oil on the surface of the wiping roll. The cleaning roll is in rolling contact with the wiping roll; There are four wiping units, two of which are arranged side by side in the front and back along the strip wiping direction and form an upper roll box, and the other two wiping units are arranged side by side in the front and back along the strip wiping direction and form a lower roll box. The upper roll box and the lower roll box are arranged opposite to each other up and down and form a wiping gap for the strip steel to pass through.
2. The four-roll wiper according to claim 1, characterized in that the four-roll wiper includes a frame (3); The upper roll box includes an upper roll frame (4), and the wiping roll and the cleaning roll that make up the upper roll box are both arranged on the upper roll frame; Lifting racks (5) are arranged on the upper roll frame. There are at least two lifting racks, and all the lifting racks are arranged at intervals along the upper roll frame. A driving gear shaft (6) is rotatably arranged on the frame, and a driving gear meshing with the lifting rack is arranged on the driving gear shaft, and all the lifting racks are simultaneously driven to act through the driving gear shaft.
3. The four-roll wiper according to claim 2, characterized in that The lower roll box includes a lower roll frame (7), and the wiping roll and the cleaning roll that make up the lower roll box are both arranged on the lower roll frame; The lower roll frame is movably arranged up and down on the frame, and a lower roll frame driving device (8) is arranged on the frame for driving the lifting of the lower roll frame.
4. The four-roll wiper according to claim 3, characterized in that the lower roll frame driving device is a cylinder or a hydraulic cylinder; There are two lower roll frame driving devices and they are respectively arranged near both ends of the lower roll frame.
5. The four-roll wiper according to claim 4, characterized in that the lower roll frame driving device is connected to the lower roll frame through a hinge structure.
6. The four-roll wiper according to claim 5, characterized in that An elastic pre-tightening device (9) is arranged on the frame. The elastic pre-tightening device includes an elastic movable end, and the elastic movable end is connected to the lower roll frame and is used to provide a vertically upward elastic pre-tightening force to the lower roll frame.
7. The four-roll wiper according to claim 1, characterized in that The cleaning rolls are grouped in fours. In the same group of cleaning rolls, two cleaning rolls are installed on the same installation shaft, and the two installation shafts are symmetrically arranged on both sides of the wiping roll. The two installation shafts are installed on a platform frame, and a lifting device is connected to the platform frame. The lifting device is fixedly arranged on the upper roll frame and the lower roll frame.
8. The four-roll wiper according to claim 2, characterized in that Along the strip wiping direction, one end of the wiping gap formed by the upper roll box and the lower roll box is a wiping inlet and the other end is a wiping outlet; A wiping inlet guard plate and a wiping outlet guard plate are arranged on the frame.
9. The four-roll wiper according to any one of claims 1 to 8, characterized in that it further includes a purging system, the purging system includes a mounting plate (10) and an air purging nozzle (11), and the air purging nozzle is arranged on the mounting plate and is used for purging the strip steel; Along the wiping direction of the strip steel, the mounting plate is arranged at the end of the wiping gap.
10. The four-roll wiper according to claim 9, characterized in that there are two mounting plates, and the two mounting plates are symmetrically arranged up and down; the number of the air purging nozzles arranged on the mounting plate is adjustable; the outlet axis of the air purging nozzle has an angle of 30°-60° with the horizontal plane and the angle is adjustable.