An on-line oil removal device for rolled aluminum sheet

Abstract

The present application relates to the technical field of aluminum plate manufacturing, and discloses a kind of on-line oil removal device of rolling aluminum sheet, including processing box and stock solution tank, the inner chamber lower end of processing box is fixed with first liquid collecting groove, the inner chamber upper end is fixed with second liquid collecting groove, first support roller is arranged in the left upper side of first liquid collecting groove, second support roller is arranged in the right upper side of second liquid collecting groove, first spray pipe and second spray pipe are arranged in processing box, under the action of several guide rollers, first support roller and second support roller, upper and lower surface sequentially present parabolic shape through first liquid collecting groove and second liquid collecting groove setting;The present application discloses that oil removal device not only realizes the on-line oil removal of rolling aluminum sheet, but also realizes the efficient removal of aluminum sheet surface oil layer under the premise of lower oil removal agent consumption, effectively reduces the cost of rolling aluminum sheet surface oil removal, and guarantees the surface cleanliness of rolling aluminum sheet after oil removal.

Description

Technical Field

[0001] This invention relates to the field of aluminum plate manufacturing technology, and specifically discloses an online degreasing device for rolled aluminum sheets. Background Technology

[0002] During the aluminum sheet rolling process, oil needs to be applied to the surface of the sheet. This serves two purposes: firstly, to reduce cutting forces, lower processing temperature, and reduce tool wear; and secondly, to slow down the oxidation rate of the sheet surface and prevent surface oxidation. After the sheet is rolled into an aluminum sheet, the oil layer needs to be removed before winding to ensure the cleanliness and quality of the final product.

[0003] The main method for removing oil from aluminum sheet surfaces currently used is spraying. Specifically, two sets of nozzles are installed on both sides of the aluminum sheet to spray degreasing agent onto both surfaces, followed by simultaneous brushing with rollers. For example, utility model patent application number 202122898035X discloses an aluminum sheet surface degreasing device, including a base, a support assembly fixed to the upper part of the base, a housing fixed to the upper part of the support assembly, an oil-removing wheel mechanism for cleaning the aluminum sheet inside the housing, and a spraying mechanism on the upper side of the oil-removing wheel mechanism. The oil-removing wheel mechanism includes two symmetrically arranged oil-removing wheels and support wheels, and the spraying mechanism includes multiple sets of spray pipes. While this aluminum sheet surface degreasing device achieves degreasing of the aluminum sheet surface, the degreasing agent quickly flows down the aluminum sheet surface after being sprayed, resulting in a short contact time between the degreasing agent and the oil layer, failing to achieve maximum degreasing effect. Therefore, it is necessary to increase the spray volume of degreasing agent, leading to an increase in the overall cost of aluminum sheet degreasing. Furthermore, the surface temperature of cold-rolled aluminum sheets is relatively low in the later stages, which prevents the degreasing agent from exerting its maximum activity after being sprayed onto the aluminum sheet surface, thus failing to achieve efficient removal of the oil layer on the aluminum sheet surface. Based on this, this application proposes an online degreasing device for rolled aluminum sheets to achieve efficient removal of the oil layer on the aluminum sheet surface with lower degreasing agent consumption. Summary of the Invention

[0004] The present invention aims to provide an online degreasing device for rolled aluminum sheets, so as to achieve efficient removal of oil layer on the surface of aluminum sheets with low degreasing agent consumption.

[0005] This invention is achieved through the following technical solution:

[0006] An online degreasing device for rolled aluminum sheets includes a processing tank and a raw liquid tank. The processing tank has a discharge port and a discharge outlet on its left and right sides, respectively. A first liquid collection tank is fixed at the lower end of the inner cavity of the processing tank, and a second liquid collection tank is fixed at the upper end of the inner cavity. Both the first and second liquid collection tanks include a tank body. The upper ends of the left and right sides of the tank body are provided with strip-shaped openings. The lower ends of the inner walls on the front and rear sides of the tank body are provided with arc-shaped guide grooves. A row of guide wheels is rotatably connected to the upper end of the arc-shaped guide grooves. A brushing component is fixed in the tank body, and an overflow hole is provided on the tank body below the strip-shaped opening. The outer end of the overflow hole is connected to a drain pipe.

[0007] A first support roller is located at the upper left of the first liquid collection tank, and a second support roller is located at the upper right of the second liquid collection tank. The processing box is equipped with a first spray pipe and a second spray pipe. The first spray pipe and the second spray pipe are connected to the raw liquid tank through a liquid pump. The first spray pipe is positioned towards the upper right half of the first support roller, and the second spray pipe is positioned towards the upper left half of the second support roller. The processing box is equipped with several guide rollers. Under the action of the several guide rollers, the first support roller, and the second support roller, the upper and lower surfaces of the rolled aluminum sheet pass through the first liquid collection tank and the second liquid collection tank in a parabolic shape.

[0008] The online degreasing device for rolled aluminum sheets disclosed in this invention operates as follows: After the rolled aluminum sheet passes above the first support roller, a row of spray nozzles on the first spray pipe evenly sprays degreasing liquid onto the upper surface of the rolled aluminum sheet. Simultaneously, because the rolled aluminum sheet passes through the first collection tank in a parabolic shape, the degreasing liquid on the upper surface of the rolled aluminum sheet can flow along its surface and accumulate in the first collection tank. During the process of the rolled aluminum sheet being pulled towards the first collection tank, the degreasing liquid flowing along its upper surface can fully contact the oil layer. Subsequently, upon entering the first collection tank, the rolled aluminum sheet is immersed in the degreasing liquid accumulated in the tank, while the upper surface of the rolled aluminum sheet is brushed by a brushing component. This combination of two degreasing and cleaning processes effectively removes the surface oil layer. After the rolled aluminum sheet is pulled out of the first collection tank, the remaining degreasing liquid on the surface can flow back into the first collection tank.

[0009] Subsequently, the rolled aluminum sheet, after its upper surface has been degreased, is flipped over, and the original lower surface of the sheet is sprayed, soaked, and brushed again. This ensures that both the upper and lower surfaces of the rolled aluminum sheet are thoroughly degreased, and any remaining degreasing solution flows back to the second collection tank. The entire surface of the rolled aluminum sheet is degreased without the need for large amounts of degreasing solution sprayed. Furthermore, the sprayed degreasing solution is collected and flows into the first and second collection tanks as a rinsing solution to further clean and degrease the sprayed sheet surface, greatly improving the utilization rate of the degreasing solution and reducing its consumption.

[0010] As a specific arrangement of the above scheme, the plurality of guide rollers include a discharge roller, a feed roller, a first guide roller, a second guide roller and a turning roller. The discharge roller and the feed roller are respectively arranged at the discharge port and the discharge outlet. The first guide roller is arranged below the first support roller, and the second guide roller and the turning roller are both arranged below the second support roller.

[0011] As a further provision of the above scheme, the processing box is provided with a first wiping roller and a second wiping roller. The first wiping roller is disposed between the first liquid collection tank and the second guide roller and is in contact with the upper surface of the rolled aluminum sheet. The two second wiping rollers are disposed between the second liquid collection tank and the discharge roller and are in contact with the upper and lower surfaces of the rolled aluminum sheet, respectively.

[0012] As a specific configuration of the above scheme, both the first wiping roller and the second wiping roller include an inner roller core and a sponge layer disposed on the outer circular surface of the inner roller core, and both the first wiping roller and the second wiping roller are provided with a power assembly at their ends.

[0013] The design of the first and second wiping rollers allows them to wipe the surface of the rolled aluminum sheet after the upper and lower surfaces have been cleaned of oil, thereby absorbing the residual degreasing liquid and enabling further cleaning.

[0014] As a specific feature of the above scheme, the upper end of the arc-shaped guide groove is parabolic in shape and its two ends are connected to the strip opening. The height of the strip opening is greater than the thickness of the rolled aluminum sheet.

[0015] As a further feature of the above scheme, the drain pipes on the first and second liquid collection tanks both extend out of the treatment tank and connect to the waste liquid recovery tank.

[0016] As a further provision of the above scheme, a bending mechanism for the rolled aluminum sheet is provided below both the first spray pipe and the second spray pipe. The bending mechanism includes a rotating rod, with swing arms connected to both ends of the rotating rod. A wheel rod is connected between the two swing arms. A pressing wheel for the upper surface side of the rolled aluminum sheet is connected to both ends of the wheel rod. A rotary drive assembly is connected to the end of the rotating rod.

[0017] The aforementioned bending mechanism allows the two pressing rollers to act on the front and rear ends of the upper surface of the rolled aluminum sheet below the spray head, causing the front and rear sides of the rolled aluminum sheet to bend upward at a certain angle. This prevents the degreasing liquid on the upper surface of the rolled aluminum sheet from flowing out from the sides, thus ensuring that all the degreasing liquid can flow along the upper surface of the rolled aluminum sheet into the tank, further reducing the waste of degreasing liquid.

[0018] As a further feature of the above scheme, exhaust corner boxes facing the lower surface of the rolled aluminum sheet are provided below the first spray pipe and the second spray pipe, and the two exhaust corner boxes are connected to a hot air blower through pipes.

[0019] The design of the exhaust fan and hot air blower can blow hot air onto the rolled aluminum sheet through the exhaust fan, thereby raising the temperature of the rolled aluminum sheet. This allows the degreasing liquid to increase the reactivity between the degreasing liquid and the surface oil layer when it flows along the upper surface of the rolled aluminum sheet, thus improving the degreasing liquid's effect on removing the oil layer from the surface of the rolled aluminum sheet.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The degreasing device disclosed in this invention not only achieves efficient online degreasing of rolled aluminum sheets, but also allows the degreasing liquid sprayed on the surface of the aluminum sheet to flow into a first or second collection tank as a washing liquid for secondary cleaning and degreasing of the rolled aluminum sheet. This enables efficient removal of the oil layer on the surface of the aluminum sheet with a low consumption of degreasing agent, effectively reducing the cost of degreasing the surface of rolled aluminum sheets.

[0022] The online degreasing device for rolled aluminum sheets disclosed in this invention further includes a bending mechanism. This mechanism bends the front and rear sides of the rolled aluminum sheet upwards at a certain angle as the degreasing liquid flows downwards along the upper surface of the aluminum sheet. This prevents the degreasing liquid from flowing out from the sides of the upper surface of the rolled aluminum sheet, ensuring that all the degreasing liquid flows along the upper surface of the rolled aluminum sheet into the tank. This reduces waste of degreasing liquid and further lowers the cost of degreasing the surface of the rolled aluminum sheet.

[0023] The online degreasing device for rolled aluminum sheet disclosed in this invention further heats the aluminum sheet by blowing hot air into the aluminum sheet through an exhaust fan box. Then, the sprayed degreasing liquid can fully exert its degreasing performance as it flows along the upper surface of the aluminum sheet, thereby effectively improving the degreasing effect of the degreasing liquid on the oil layer on the surface of the rolled aluminum sheet and ensuring the surface cleanliness of the rolled aluminum sheet after degreasing. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a frontal perspective view of the present invention;

[0026] Figure 2This is a three-dimensional structural diagram of the back of the present invention;

[0027] Figure 3 This is a three-dimensional structural diagram of the internal structure of the processing box in this invention;

[0028] Figure 4 This is a schematic diagram of the main view of the internal structure of the processing box in this invention;

[0029] Figure 5 This is a three-dimensional structural diagram of the first spray pipe, spray head, and arc-shaped baffle in this invention;

[0030] Figure 6 This is a three-dimensional structural diagram of the first or second liquid collection tank in this invention;

[0031] Figure 7 This is a cross-sectional three-dimensional structural diagram of the first or second liquid collection tank in this invention;

[0032] Figure 8 This is a three-dimensional structural diagram of the bending mechanism in this invention;

[0033] Figure 9 This is a three-dimensional structural diagram of the exhaust corner box and hot air duct in this invention. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The following will refer to the appendix... Figures 1-9 This application will be described in detail with reference to the embodiments. Example 1

[0036] Example 1 discloses an online degreasing device for rolled aluminum sheets, see attached drawing. Figure 1-4 The main body of the degreasing device includes a processing tank 1 and a raw liquid tank 2. A feed inlet is provided at the lower end of the right side of the processing tank 1, and a discharge outlet is provided at the upper end of the left side. Feed roller 101 and discharge roller 102 are respectively rotatably arranged in the processing tank 1 at the feed inlet and discharge outlet positions.

[0037] A first liquid collection tank 3 is fixedly installed at the lower end of the inner cavity of the processing box 1, and a second liquid collection tank 4 is fixedly installed at the upper end of the inner cavity. A first support roller 5 is rotatably connected in the processing box 1 to the upper left of the first liquid collection tank 3, and a second support roller 6 is rotatably connected in the processing box 1 to the upper right of the second liquid collection tank 4. Then, a first guide roller 7 is rotatably connected in the processing box 1 below the first support roller 5, so that the rolled aluminum sheet is introduced by the feed roller 101 and then guided by the first guide roller 7 to the first support roller 5, and then the rolled aluminum sheet is pulled into the first liquid collection tank 3 by the first support roller 5.

[0038] Reference Appendix Figure 3 and attached Figure 5 A first spray pipe 8 is located above the first support roller 5 and near the first collection tank 3. The first spray pipe 8 has a row of spray heads 801 facing the first support roller 5. The end of the first spray pipe 8 extends out of the processing tank 1 and is connected to the raw liquid tank 2 via a first liquid pump 201, allowing the degreasing liquid in the raw liquid tank 2 to be evenly sprayed down from the row of spray heads 801 under the action of the first liquid pump 201. Similarly, a second spray pipe 9 is located above the second support roller 6 and near the second collection tank 4. The second spray pipe 9 also has a row of spray heads facing the second support roller 6. The end of the second spray pipe 9 extends out of the processing tank 1 and is connected to the raw liquid tank 2 via a second liquid pump 202. Furthermore, to prevent the sprayed degreasing liquid from being splashed by the rolled aluminum sheet, an arc-shaped baffle 10 is installed below both the first spray pipe 8 and the second spray pipe 9.

[0039] Reference Appendix Figure 6 and attached Figure 7 The first collection tank 3 and the second collection tank 4 have the same structure, both including a tank body 301 with an opening at the top. The front and rear ends of the tank body 301 are fixedly connected to the inner walls of the front and rear sides of the processing box 1. A strip-shaped opening 302 for passing through the rolled aluminum sheet is opened on the upper part of the left and right sides of the tank body 301, and the height of the strip-shaped opening 302 is greater than the thickness of the rolled aluminum sheet, so that the degreasing liquid flowing down the upper surface of the rolled aluminum sheet can flow into the tank body 301 through the strip-shaped opening 302.

[0040] Arc-shaped guide grooves 303 are provided at the lower ends of the inner walls on both the front and rear sides of the trough 301. The upper end of the arc-shaped guide groove 303 is parabolic in shape, and both ends are connected to the strip-shaped opening 302. A row of guide wheels 304 are rotatably connected to the upper end of the arc-shaped guide groove 303, so that when the rolled aluminum sheet passes through the inside of the trough 301, its front and rear ends are restricted by the guide wheels 304, thus forming a parabolic curved trajectory in the trough 301.

[0041] A brush block 305 is fixedly installed in the tank 301 above the arc-shaped guide groove 303. A large number of brush bristles 306 are provided at the lower end of the brush block 305, acting on the upper surface of the rolled aluminum sheet in the tank 301, so that the rolled aluminum sheet is subjected to the brushing action of the brush bristles 306 when it is pulled through the tank 301. Finally, an overflow hole 307 is provided on the front or rear face of the tank 301. The overflow hole 307 is set below the horizontal height of the strip-shaped opening 302. A drain pipe 308 is connected to the outer end of the overflow hole 307, and a waste liquid recovery tank 11 is connected to the end of the drain pipe 308 that extends out of the processing tank 1.

[0042] Reference Appendix Figure 3 and attached Figure 4 A second guide roller 12 is rotatably connected to the processing box 1 below the second support roller 6, and the second guide roller 12 is at the same horizontal height as the first support roller 5, so that the rolled aluminum sheet passes through the first liquid collection tank 3 in a parabolic shape under the action of the second guide roller 12 and the first support roller 5. Similarly, the rolled aluminum sheet passes through the second liquid collection tank 4 in a parabolic shape under the action of the discharge roller 102 and the second support roller 6. A flipping roller 13 is provided on the side of the second guide roller 12, and the flipping roller 13 is vertically aligned with the second support roller 6, so that after the rolled aluminum sheet is guided by the flipping roller 13, the original upper surface is flipped to the lower surface, and the original lower surface is flipped to the upper surface, and then enters the second liquid collection tank 4 through the second support roller 6.

[0043] A first wiping roller 14 is rotatably connected in the processing box 1 between the first liquid collection tank 3 and the second guide roller 12, and the first wiping roller 14 contacts the upper surface of the rolled aluminum sheet after the first cleaning. Two second wiping rollers 15 are rotatably connected in the processing box 1 between the second liquid collection tank 4 and the discharge roller 102, and the two second wiping rollers 15 contact the upper and lower surfaces of the rolled aluminum sheet. Specifically, the first wiping roller 14 and the second wiping roller 15 have the same structure, both including an inner roller core, and a sponge layer is provided on the outer circular surface of the inner roller core for wiping and absorbing the residual degreasing liquid on the surface of the rolled aluminum sheet. The first wiping roller 14 and the second wiping roller 15 are respectively located away from the first liquid collection tank 3 and the second liquid collection tank 4, so that the rolled aluminum sheet has a longer stroke during the traction process after the degreasing and cleaning is completed, allowing the residual degreasing liquid on the surface to slide down the surface into the corresponding tank 301. Finally, a power assembly 16, which is provided on the outer side of the processing box 1, is connected to the ends of the first wiping roller 14 and the second wiping roller 15. The power assembly consists of a motor and a reducer to realize the low-speed rotation of the first wiping roller 14 or the second wiping roller 15.

[0044] When the degreasing device disclosed in this embodiment degreases the rolled aluminum sheet online, the rolled aluminum sheet 100 passes through the feed roller 101, the first guide roller 7, the first support roller 5, the first liquid collection tank 3, the second guide roller 12, the turning roller 13, the second support roller 6, the second liquid collection tank 4, and the discharge roller 102 in sequence. When the rolled aluminum sheet 100 passes through the first liquid collection tank 3 and the second liquid collection tank 4, its curve trajectory is a downward concave parabola.

[0045] As the rolled aluminum sheet moves to the first support roller 5, the degreasing liquid delivered by the first spray pipe 8 is sprayed onto the surface of the rolled aluminum sheet, allowing it to contact the surface oil layer. Simultaneously, the degreasing liquid flows along the upper surface of the rolled aluminum sheet into the first collection tank 3 for accumulation. During this flow, the degreasing liquid has sufficient time to fully contact and react with the surface oil layer. Then, the rolled aluminum sheet moves into the first collection tank 3, where it undergoes a thorough reaction in the degreasing liquid immersed in the tank 301. During the traction process, it is brushed by bristles, achieving complete removal of the surface oil layer. Finally, the first wiping roller 14 wipes away any remaining degreasing liquid from the upper surface. Subsequently, the rolled aluminum sheet passes through the turning roller 13, repeating the above spraying, immersion brushing, and wiping steps to achieve complete degreasing treatment of both the upper and lower surfaces of the rolled aluminum sheet. Example 2

[0046] Example 2 discloses an online degreasing device for rolled aluminum sheets that is an improved design based on the technical solution in Example 1. The similarities between it and Example 1 will not be described again.

[0047] Reference Appendix Figure 1 Appendix Figure 3 Appendix Figure 4 and attached Figure 8 In this embodiment 2, a bending mechanism 17 acting on the upper surface of the rolled aluminum sheet is provided in the processing box 1 below the first spray pipe 8 and the second spray pipe 9. The bending mechanism 17 includes a rotating rod 171 rotatably connected in the processing box 1. A swing arm 172 is connected to both ends of the rotating rod 171. A wheel rod 173 is connected to the ends of the two swing arms 172. Then, a pressing wheel 174 is connected to both ends of the wheel rod 173. In addition, a rotary drive assembly 175 disposed on the outer side of the processing box 1 is also connected to the end of the rotating rod 171. The rotary drive assembly 175 is also composed of a motor and a reducer.

[0048] In this embodiment 2, through the design of the bending mechanism 17, the swing arm 172 is rotated by the rotation drive component 175, which in turn causes the front and rear pressure rollers 174 to act on the front and rear ends of the upper surface of the rolled aluminum sheet below the spray head 801. This causes the front and rear sides of the rolled aluminum sheet to bend upward at a certain angle, preventing the degreasing liquid on the upper surface of the rolled aluminum sheet from flowing out from the sides, so that all the degreasing liquid can flow along the upper surface of the rolled aluminum sheet into the tank 301. Example 3

[0049] Example 3 discloses an online degreasing device for rolled aluminum sheets that is an improved design based on the technical solutions in Example 1 or Example 2. The similarities between it and Example 1 or Example 2 will not be described again.

[0050] Reference Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 and attached Figure 9 In this embodiment 3, exhaust corner boxes 18 are fixedly installed in the treatment box 1 below the first spray pipe 8 and the second spray pipe 9. The exhaust corner boxes 18 are arranged below the width direction of the rolled aluminum sheet, and exhaust ports are provided at the ends of the exhaust corner boxes 18 facing the rolled aluminum sheet. A hot air pipe 19 is connected to one end of each exhaust corner box 18, and then the two hot air pipes 19 are connected to the ends of the treatment box 1 through the same pipe to the hot air blower 20. In addition, air outlets 103 are provided on the front and rear sides of the treatment box 1, aligned with the upper positions of the exhaust corner boxes 18.

[0051] In this embodiment 3, through the design of the exhaust box 18 and the hot air blower 20, the hot air blown out by the exhaust box 18 slightly heats up the rolled aluminum sheet, so that when the degreasing liquid flows along the upper surface of the rolled aluminum sheet towards the tank 301, the reactivity between the degreasing liquid and the surface oil layer can be improved, thereby improving the degreasing liquid's effect on removing the oil layer on the surface of the rolled aluminum sheet.

[0052] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A rolling aluminum sheet online degreasing device comprising a treatment tank and a raw liquid tank, left and right sides of the treatment tank are respectively provided with discharge ports and discharge ports, characterized in that, The inner cavity lower end of the processing box is fixed with a first collecting tank, and the inner cavity upper end is fixed with a second collecting tank, both the first collecting tank and the second collecting tank comprise a tank body, both left and right side surfaces of the tank body are provided with a strip-shaped opening at the upper end, and both the front and rear inner walls of the tank body are provided with an arc-shaped guide groove at the lower end, the upper end of the arc-shaped guide groove is rotatably connected with a row of guide edge wheels, a brush washing assembly is fixed in the tank body, and a overflow hole lower than the strip-shaped opening is formed in the tank body, and the outer end of the overflow hole is connected with a liquid discharge pipe. A first supporting roller is arranged at the upper left of the first collecting tank, and a second supporting roller is arranged at the upper right of the second collecting tank, a first spraying pipe and a second spraying pipe are arranged in the processing box, the first spraying pipe and the second spraying pipe are connected with a raw liquid tank through a liquid pump, the first spraying pipe is arranged towards the upper right half of the first supporting roller, and the second spraying pipe is arranged towards the upper left half of the second supporting roller, a plurality of guide rollers are arranged in the processing box, and the upper and lower surfaces of the rolled aluminum sheet pass through the first collecting tank and the second collecting tank in sequence in a parabolic shape under the action of the plurality of guide rollers, the first supporting roller and the second supporting roller. The plurality of guide rollers comprise a discharge roller, an inlet roller, a first guide roller, a second guide roller and a turnover roller, the discharge roller and the inlet roller are arranged at the positions of the discharge port and the inlet port respectively, the first guide roller is arranged below the first supporting roller, and the second guide roller and the turnover roller are both arranged below the second supporting roller. A bending mechanism acting on the rolled aluminum sheet is arranged below the first spraying pipe and the second spraying pipe, the bending mechanism comprises a rotating rod, both ends of the rotating rod are connected with a swing arm, a wheel rod is connected between the two swing arms, both ends of the wheel rod are connected with a bending wheel acting on the side edge of the upper surface of the rolled aluminum sheet, and the end of the rotating rod is connected with a rotary driving assembly.

2. The on-line degreasing device for rolling aluminum sheet according to claim 1, wherein A first wiping roller and a second wiping roller are arranged in the processing box, the first wiping roller is arranged between the first collecting tank and the second guide roller and contacts the upper surface of the rolled aluminum sheet, and two second wiping rollers are arranged between the second collecting tank and the discharge roller and contact the upper and lower surfaces of the rolled aluminum sheet respectively.

3. The on-line degreasing device for rolling aluminum sheet according to claim 2, wherein Both the first wiping roller and the second wiping roller comprise an inner roller core and a sponge layer arranged on the outer circular surface of the inner roller core, and both the first wiping roller and the second wiping roller are provided with a power assembly at the end.

4. The on-line degreasing device for rolling aluminum sheet according to claim 1, wherein The upper end of the arc-shaped guide groove is in a parabolic shape and connected with the strip-shaped opening at both ends, and the height of the strip-shaped opening is greater than the thickness of the rolled aluminum sheet.

5. The on-line degreasing device for rolling aluminum sheet as claimed in claim 1, wherein The liquid discharge pipes on the first collecting tank and the second collecting tank both extend out of the processing box and are connected with a waste liquid recovery tank.

6. The on-line degreasing device for rolling aluminum sheet as claimed in claim 1, wherein A ventilation corner box arranged towards the lower surface of the rolled aluminum sheet is arranged below the first spraying pipe and the second spraying pipe, and the two ventilation corner boxes are connected with a hot air fan through a pipeline.

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