Surface treatment device and treatment method for aluminum coil

Abstract

The invention relates to the technical field of aluminum roll cleaning, in particular to a surface treatment device and method for an aluminum roll, the surface treatment device comprises a main side plate and an auxiliary side plate, the aluminum roll is inserted between the main side plate and the auxiliary side plate, the lower ends of the main side plate and the auxiliary side plate are jointly provided with a collecting box, and the upper face and the lower face of the aluminum roll abut against an upper sponge wheel and a lower sponge wheel correspondingly; positioning frames are installed in cavities of the upper sponge wheel and the lower sponge wheel in a penetrating mode, the two ends of each positioning frame are rotationally connected with the main side plate and the auxiliary side plate, a liquid conveying pipe is inserted into a cavity of each positioning frame, and a guide pipe is fixedly connected to the side surface of the end, close to the main side plate, of each liquid conveying pipe; through sponge wheel wiping, spray hot water softening and deep cleaning and drying of the cleaning wheel, oil stains and aluminum scraps are thoroughly removed, waste water can be recycled, the sponge wheel is low in cost, easy to replace, energy-saving and environment-friendly, oil accumulation and blockage of the pressing wheel are prevented through hot air, stable operation is guaranteed, and the aluminum coil treatment quality and efficiency are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of aluminum coil cleaning technology, specifically to a surface treatment device and method for aluminum coils. Background Technology

[0002] During the rolling, storage and transportation of aluminum coils, rolling oil, aluminum shavings and environmental dust can easily adhere to their surface. If these impurities are not thoroughly removed, they can lead to quality problems such as reduced paint film adhesion and bubbles during coating. In severe cases, the coils may need to be scrapped. Therefore, efficient surface cleaning is a key pre-processing step for deep processing of aluminum coils. In existing aluminum coil surface treatment technologies, traditional equipment mostly relies on single cold wiping or room temperature spraying. It cannot use hot water injection to heat the cleaning parts or hot air to accelerate the softening of grease. As a result, stubborn rolling oil is difficult to separate from the aluminum coil surface, and oil residue remains after cleaning, requiring repeated treatment. At the same time, water resources and consumables are wasted in a serious manner. There is a lack of a wastewater recycling design for backwashing of cleaning parts. In addition, the equipment is prone to failure during operation. The pressure roller assembly does not have an anti-oil accumulation structure. The oil squeezed out during cleaning is easy to cool and solidify inside the pressure roller, causing the pressure roller to jam and affecting work efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a surface treatment apparatus for aluminum coils to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a surface treatment device for aluminum coils, comprising a main side plate and a secondary side plate, wherein an aluminum coil is inserted between the main side plate and the secondary side plate, and a collection box is installed at the lower ends of the main side plate and the secondary side plate. An upper sponge wheel and a lower sponge wheel respectively abut against the upper and lower surfaces of the aluminum coil. A positioning frame is installed through the cavity of both the upper and lower sponge wheels, and both ends of the positioning frame are rotatably connected to the main side plate and the secondary side plate. An infusion tube is inserted into the cavity of each positioning frame, and a conduit is fixed to the side surface of each infusion tube near the end of the main side plate. A suction tube is installed at one end of both conduits, and the suction tube is inserted into and connected to the bottom of the inner cavity of the collection box. A rotatable spiral rod is provided in the cavity of the suction tube. The outer wall of the upper sponge wheel abuts against a porous pressure roller, the porous pressure roller has a drainage structure inside, and the outer side of the lower sponge wheel abuts against a secondary pressure roller; Two symmetrically positioned sprayers are installed on one side of the main side plate, which can spray water mist onto the surface of the aluminum coil. Two water-absorbing wheels are also symmetrically rotatably connected between the main side plate and the secondary side plate, and the water-absorbing wheels are in contact with the outer surface of the aluminum coil. Two air outlet pipes are also inserted between the main side plate and the secondary side plate, and the air outlet pipes are located on the side closer to the water-absorbing wheels. One end of the two air outlet pipes is equipped with an exhaust structure, which can exhaust air into the interior of the porous pressure roller.

[0005] Preferably, the drainage structure includes a drainage tube, which is rotatably connected to the cavity of the porous pressure roller. One end of the drainage tube is inserted into the main side plate. The surface of the porous pressure roller has several through holes. A liquid storage chamber is installed at the position where the two infusion tubes are opposite to each other, and the liquid storage chamber is connected to the infusion tubes. A top cover is installed on the upper end of the main side plate and the secondary side plate, and the lower surface of the top cover is in contact with the upper sponge wheel and the water absorption wheel.

[0006] Preferably, a fixing frame is fixed to one end of the drain tube extending from the outer wall of the main side plate. The fixing frame is connected to the outer wall of the main side plate by screws. A vertical pipe is installed on the lower surface of the drain tube near the fixing frame. A collector is provided on the lower side of the auxiliary pressure roller.

[0007] Preferably, the exhaust structure includes a manifold, which is fixedly connected to one end of two exhaust pipes extending out of the outer side wall of the sub-side plate. An L-shaped pipe is fixedly connected to the side surface of the manifold, and an air pipe is fixedly connected to the side of the L-shaped pipe near the porous pressure roller. The air pipe is inserted into the cavity of the porous pressure roller, and an exhaust port is opened at the lower end of the air pipe.

[0008] Preferably, the two sprayers are connected to an outer pipe at one end extending from the outer side wall of the main side plate. A brushless motor is connected to the outer side wall of the main side plate. A drive wheel is connected to the output end of the brushless motor. A driven wheel is connected to the outer side wall at the upper end of the spiral rod. A transmission belt is sleeved between the driven wheel and the drive wheel. A gear set is installed at one end of the two water suction wheels.

[0009] Preferably, each positioning frame is fitted with a pulley at one end extending from the outer side wall of the main side plate, and a belt is fitted between the two pulleys, with the belt connecting the two pulleys in a "T" shape.

[0010] Preferably, a cleaning box is provided on the side of the suction wheel away from the upper sponge wheel, and the cleaning box is connected to the collection box. Three guide wheels are provided inside the cleaning box, and the guide wheels all abut against the outer wall of the aluminum coil. Two symmetrically positioned water sprayers are fixed on the inner wall of the cleaning box near the suction wheel, and the output ends of the two water sprayers face the upper and lower sides of the aluminum coil respectively. One end of the two water sprayers is connected to an outer pipe II. Two symmetrically positioned dryers are installed on the inner wall of the cleaning box away from the suction wheel, and the output ends of the two dryers also face the upper and lower sides of the aluminum coil respectively.

[0011] Preferably, the inner sidewall of the cleaning box is rotatably connected to two cleaning wheels that abut against the corresponding water-absorbing wheels, and each cleaning wheel is in contact with the surface of the aluminum coil. The outer sidewall of the cleaning box is fixedly connected to a cleaning liquid injector, and the output end of the cleaning liquid injector is rotatably connected to the two cleaning wheels. The outer sidewall of the cleaning wheels is provided with several drainage holes.

[0012] Furthermore, the present invention adopts the following technical solution: a surface treatment method for aluminum coils, comprising the following steps: S1. After inserting the aluminum coil between the main side plate and the secondary side plate, the surface of the aluminum coil is initially wiped by the rotation of the upper and lower sponge wheels. At the same time, when the screw rotates in the opposite direction, it blows air into the collection box, so that the air carrying heat flows into the air outlet pipe quickly, which accelerates the flow rate of hot air in the air outlet pipe area and promotes the melting efficiency of oil stains on the surface of the aluminum coil. At the same time, the exhaust structure increases the temperature inside the porous pressure roller to heat the surface of the lower sponge wheel. S2. Then, during the process of passing through the sprayer, the sprayer will continuously spray hot water at 50 degrees Celsius onto the upper and lower surfaces of the aluminum coil to soften the oil stains on the surface of the aluminum coil. Then, the oil and water mixture on the surface of the aluminum coil will be wiped clean by the water suction wheel. The cleaned water will then be stored inside the collection box. S3. The oil-water mixture inside the collection box is extracted and transferred to the cavities of the upper and lower sponge wheels by the screw rod, so as to backwash and preheat the upper and lower sponge wheels. While cleaning the surface of the upper and lower sponge wheels, the cleaning effect on the surface of the aluminum coil is improved, and the surface of the aluminum coil can be preheated.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. The aluminum coil surface is initially wiped by a sponge wheel, and hot water is sprayed by a spraying device to soften the oil stains. Then, cleaning fluid is injected by a cleaning wheel to complete deep cleaning. The subsequent water spray structure rinses away residual impurities. Finally, the drying component dries the coil directly, forming a complete cleaning system that can thoroughly remove oil stains and aluminum shavings from the surface of the aluminum coil without the need for an additional drying process, thus improving processing efficiency. 2. The device can recycle cleaning wastewater and transport it back to the sponge wheel for backwashing and preheating through the conveying structure, realizing water resource recycling and reducing waste. At the same time, the sponge wheel is made of low-cost and easily replaceable materials, reducing daily maintenance and consumable replacement costs, and making it more economical in the long run. 3. The hot air conveying structure introduces hot air into the pressure roller, effectively preventing oil accumulation and blockage inside the pressure roller. Combined with the top cover and cleaning components, and the guide structure to guide the aluminum coil conveying path, the equipment is less prone to failure during operation, further improving the overall processing stability and continuity. Attached Figure Description

[0014] The present invention will be further explained below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the cleaning box of the present invention; Figure 4 For the present invention Figure 1 Enlarged view of point A in the middle; Figure 5 This is a cross-sectional view of the suction tube of the present invention; Figure 6 This is a partial structural diagram of the present invention after the secondary side plate has been removed; Figure 7 This is a schematic cross-sectional view of the upper sponge wheel of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of point B in the middle; Figure 9 This is a partial structural schematic diagram of the porous pressure roller of the present invention after cross-section; Figure 10 For the present invention Figure 9 Enlarged view of point C in the middle; Figure 11 This is a schematic diagram of the cross-section of the main side plate of the present invention.

[0015] Explanation of reference numerals in the attached figures: 1. Aluminum coil; 2. Main side plate; 3. Secondary side plate; 4. Upper sponge wheel; 5. Lower sponge wheel; 6. Positioning frame; 7. Infusion tube; 8. Liquid storage chamber; 9. Perforated pressure roller; 10. Drainage tube; 11. Air pipe; 12. Exhaust port; 13. Fixing frame; 14. Vertical pipe; 15. Auxiliary pressure roller; 16. Sprayer; 17. Air outlet pipe; 18. Water suction wheel; 19. Gear set; 20. Pulley; 21. Belt; 22. Collection box 22. Guide tube; 23. Suction tube; 24. Screw rod; 25. Driven wheel; 26. Drive wheel; 27. Transmission belt; 28. Brushless motor; 29. ​​Top cover; 30. Cleaning box; 31. Cleaning wheel; 32. Drain hole; 33. Cleaning solution injector; 34. Water sprayer; 35. Dryer; 36. Guide wheel; 37. Manifold; 38. L-shaped tube; 39. Collector; 40. External pipe one; 41. External pipe two. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figures 1-11The present invention provides a technical solution: a surface treatment device for aluminum coils, including a main side plate 2 and a secondary side plate 3, an aluminum coil 1 inserted between the main side plate 2 and the secondary side plate 3, a collection box 21 installed at the lower ends of the main side plate 2 and the secondary side plate 3, an upper sponge wheel 4 and a lower sponge wheel 5 respectively abutting the upper and lower surfaces of the aluminum coil 1, a positioning frame 6 is installed through the cavity of the upper sponge wheel 4 and the lower sponge wheel 5, and the two ends of the positioning frame 6 are rotatably connected to the main side plate 2 and the secondary side plate 3, an infusion tube 7 is inserted into the cavity of each positioning frame 6, a conduit 22 is fixedly connected to the side surface of each infusion tube 7 near the end of the main side plate 2, a suction tube 23 is installed at one end of the two conduits 22, and the suction tube 23 is inserted into and connected to the bottom of the inner cavity of the collection box 21, and a rotatable spiral rod 24 is provided in the cavity of the suction tube 23; The outer side wall of the upper sponge wheel 4 abuts against the porous pressure wheel 9, and the porous pressure wheel 9 is provided with a drainage structure inside. The outer side of the lower sponge wheel 5 abuts against the auxiliary pressure wheel 14. Two symmetrically positioned sprayers 15 are installed on one side of the main side plate 2, and the sprayers 15 can spray water mist onto the surface of the aluminum coil 1. Two water suction wheels 17 are also symmetrically rotatably connected between the main side plate 2 and the secondary side plate 3, and the water suction wheels 17 abut against the outer surface of the aluminum coil 1. Two air outlet pipes 16 are also inserted between the main side plate 2 and the secondary side plate 3, and the air outlet pipes 16 are located on the side closer to the water suction wheel 17. One end of the two air outlet pipes 16 is equipped with an exhaust structure, which can exhaust air into the interior of the porous pressure roller 9.

[0018] Specifically, the upper sponge wheel 4 and the lower sponge wheel 5 are made of high-density polyurethane sponge, which can be used for preliminary cleaning of the surface of the aluminum coil 1 and can withstand hot water at 50 degrees Celsius. Hot water can be poured into them to raise their surface temperature, so that the upper sponge wheel 4 and the lower sponge wheel 5 can preliminarily heat the aluminum coil 1 while scraping off the oil stains on the surface of the aluminum coil 1. At the same time, the porous structure can be used for wastewater filtration. When the screw rod 24 rotates in the forward direction, it transports the wastewater inside the collection box 21 through the conduit 22 into the infusion tube 7 and then pours it into the cavity of the upper sponge wheel 4 and the lower sponge wheel 5, which will filter out the aluminum shavings in the wastewater. Moreover, the upper sponge wheel 4 and the lower sponge wheel 5 are low in cost and easy to replace.

[0019] In this embodiment, the drainage structure includes a drainage tube 10, which is rotatably connected to the cavity of the porous pressure roller 9. One end of the drainage tube 10 is inserted into the main side plate 2. The surface of the porous pressure roller 9 is provided with several through holes. A liquid storage chamber 8 is installed at a position opposite to each other of the two infusion pipes 7, and the liquid storage chamber 8 is connected to the infusion pipes 7. The upper ends of the main side plate 2 and the secondary side plate 3 are jointly provided with a top cover 29, and the lower surface of the top cover 29 is in contact with the upper sponge wheel 4 and the water absorption wheel 17.

[0020] In this embodiment, a fixing frame 12 is fixedly connected to one end of the drain tube 10 extending from the outer side wall of the main side plate 2. The fixing frame 12 is connected to the outer side wall of the main side plate 2 by screws. A vertical pipe 13 is installed on the lower surface of the drain tube 10 near the fixing frame 12. A collector 39 is provided on the lower side of the auxiliary pressure roller 14.

[0021] For details, please refer to Figure 7 and Figure 8 When the upper sponge wheel 4 and the lower sponge wheel 5 rotate, they drive the corresponding porous pressure wheel 9 and the auxiliary pressure wheel 14 to rotate together. This causes the porous pressure wheel 9 and the auxiliary pressure wheel 14 to squeeze the upper sponge wheel 4 and the lower sponge wheel 5, squeezing out the sewage or oil inside. At the same time, when the porous pressure wheel 9 squeezes the upper sponge wheel 4, the sewage flows into the drain pipe 10 through the through holes on the surface of the porous pressure wheel 9, and then flows into the collector 39 through the vertical pipe 13. The collector 39 can be connected to a drain pipe. The driving devices for the water suction wheel 17 and the gear set 18 are both driven by motors, which is existing technology, so they are not described in detail in the figure.

[0022] In this embodiment, the exhaust structure includes a manifold 37, which is fixedly connected to one end of two exhaust pipes 16 extending out of the outer side wall of the sub-side plate 3. An L-shaped pipe 38 is fixedly connected to the side surface of the manifold 37. An air pipe 11 is fixedly connected to the side of the L-shaped pipe 38 near the porous pressure roller 9, and the air pipe 11 is inserted into the cavity of the porous pressure roller 9. An exhaust port 111 is opened at the lower end of the air pipe 11.

[0023] Specifically, during the process of storing wastewater inside the collection box 21, the screw rod 24 rotates in the opposite direction to send air into the collection box 21, causing the wastewater in the collection box 21 to generate more hot air, which is then discharged through the air outlet pipe 16. This increases the local airflow velocity in the air outlet pipe 16, allowing the oil layer on the surface of the aluminum coil 1 between the two air outlet pipes 16 to soften more quickly and mix with the hot water. After the hot air enters the air outlet pipe 16, it is transmitted to the interior of the porous pressure roller 9 through the L-shaped pipe 38 and the air pipe 11. The hot air then heats the surface of the sponge wheel 5 through the holes on the surface of the porous pressure roller 9, while also preventing the oil adhering inside the porous pressure roller 9 from cooling and accumulating. The sub-side plate 3, the air outlet pipe 16, and the air pipe 11 are all detachable, facilitating the replacement of the sponge wheel.

[0024] In this embodiment, the two sprayers 15 extend from one end of the outer side wall of the main side plate 2 and are jointly fixed to an outer pipe 40. A brushless motor 28 is fixed to the outer side wall of the main side plate 2. A drive wheel 26 is fixed to the output end of the brushless motor 28. A driven wheel 25 is fixed to the outer side wall of the upper end of the spiral rod 24. A transmission belt 27 is sleeved between the driven wheel 25 and the drive wheel 26. A gear set 18 is installed at one end of the two water suction wheels 17.

[0025] In this embodiment, each positioning frame 6 is fitted with a pulley 19 at one end extending from the outer side wall of the main side plate 2, and a belt 20 is fitted between the two pulleys 19, with the belt 20 connecting the two pulleys 19 in a figure-eight shape.

[0026] Specifically, the gear set 18 is used to make the two suction wheels 17 rotate synchronously and in opposite directions, thereby cleaning the surface of the aluminum coil 1. At the same time, the cleaning effect on the surface of the aluminum coil 1 can be adjusted by changing the rotation speed of the suction wheels 17. The belt 20 fitted between the two pulleys 19 is in the shape of an "8" to achieve the effect of the two pulleys 19 rotating in opposite directions.

[0027] In this embodiment, a cleaning box 30 is provided on the side of the water-absorbing wheel 17 away from the upper sponge wheel 4, and the cleaning box 30 is connected to the collection box 21. Three guide wheels 36 are provided inside the cavity of the cleaning box 30, and the guide wheels 36 all abut against the outer side wall of the aluminum coil 1. Two symmetrically positioned water sprayers 34 are fixedly connected to the inner side wall of the cleaning box 30 near the water-absorbing wheel 17, and the output ends of the two water sprayers 34 face the upper and lower sides of the aluminum coil 1 respectively. One end of the two water sprayers 34 is connected to an outer pipe 41. Two symmetrically positioned dryers 35 are installed on the inner side wall of the cleaning box 30 away from the water-absorbing wheel 17, and the output ends of the two dryers 35 also face the upper and lower sides of the aluminum coil 1 respectively.

[0028] In this embodiment, the inner sidewall of the cleaning box 30 is rotatably connected to two cleaning wheels 31 that abut against the corresponding water-absorbing wheels 17, and each cleaning wheel 31 is in contact with the surface of the aluminum coil 1. The outer sidewall of the cleaning box 30 is fixedly connected to a cleaning liquid injector 33, and the output end of the cleaning liquid injector 33 is rotatably connected to the two cleaning wheels 31. The outer sidewall of the cleaning wheel 31 is provided with a number of drainage holes 32.

[0029] Specifically, after the oil and aluminum shavings on the surface of the aluminum coil 1 are initially softened and cleaned by hot water between the main side plate 2 and the secondary side plate 3, it is then conveyed into the cleaning box 30. During this process, the aluminum coil 1 first passes through the cleaning wheel 31, which is made of cloth. A low concentration of cleaning solution is injected into the cleaning wheel 31 through the cleaning solution injector 33. Then, the cleaning solution is discharged from the drain hole 32, thus performing the final cleaning of the small amount of oil on the surface of the aluminum coil 1. (Refer to...) Figure 3When the aluminum coil 1 enters the cleaning box 30, it is turned by three guide wheels 36, making the aluminum coil 1 form a V shape. Then, when it passes the position of the water sprayer 34, the water sprayer 34 sprays hot water at 50 degrees Celsius onto the surface of the aluminum coil 1 for a second rinsing and cleaning, so that the cleaning liquid and the cleaned oil are washed off and then flow into the bottom of the inner cavity of the cleaning box 30, and then flow from the cleaning box 30 into the inside of the collection box 21. Then, as the aluminum coil 1 moves upward at an angle, it passes through the dryer 35 to dry the surface of the aluminum coil 1, so that the surface of the aluminum coil 1 is thoroughly cleaned.

[0030] A surface treatment method for aluminum coils includes the following steps: S1. After inserting the aluminum coil 1 between the main side plate 2 and the secondary side plate 3, the surface of the aluminum coil 1 is initially wiped by rotating the upper sponge wheel 4 and the lower sponge wheel 5. At the same time, when the screw rod 24 rotates in the opposite direction, it blows air into the collection box 21, so that the air carrying heat flows into the interior of the air outlet pipe 16 quickly, which accelerates the flow rate of hot air in the area of ​​the air outlet pipe 16 and promotes the melting efficiency of oil stains on the surface of the aluminum coil 1. At the same time, the exhaust structure increases the temperature inside the porous pressure roller 9 to heat the surface of the lower sponge wheel 5. S2. Then, during the process of passing through the sprayer 15, the sprayer 15 will continuously spray hot water at 50 degrees Celsius onto the upper and lower surfaces of the aluminum coil 1 to soften the oil stains on the surface of the aluminum coil 1. Then, the oil and water mixture on the surface of the aluminum coil 1 will be wiped clean by the water suction wheel 17. Then, the cleaned water will be stored inside the collection box 21. S3. The oil-water mixture inside the collection box 21 is extracted and transferred to the cavities of the upper sponge wheel 4 and the lower sponge wheel 5 by the screw rod 24, so that the upper sponge wheel 4 and the lower sponge wheel 5 are backwashed and preheated. While cleaning the surface of the upper sponge wheel 4 and the lower sponge wheel 5, the cleaning effect on the surface of the aluminum coil 1 is improved, and the surface of the aluminum coil 1 can be preheated.

[0031] Working principle: In this invention, aluminum coil 1 is first inserted between the main side plate 2 and the secondary side plate 3. Then, the surface of aluminum coil 1 is initially wiped by the rotation of the upper sponge wheel 4 and the lower sponge wheel 5 made of high-density polyurethane material. At the same time, the brushless motor 28 drives the screw rod 24 through the transmission structure. The screw rod 24 rotates in the opposite direction and blows air into the collection box 21. The hot air is accelerated by the air outlet pipe 16, thereby accelerating the softening of oil stains on the surface of aluminum coil 1. The exhaust structure also heats the porous pressure roller 9 to prevent internal oil cooling and accumulation. The porous pressure roller 9 and the secondary pressure roller 14 squeeze the sponge wheel. Wastewater enters collector 39 through the drainage structure. Sprayer 15 sprays 50-degree hot water to further soften the oil stains. Water suction wheel 17 wipes away the oil-water mixture and stores it in collection box 21. Spiral rod 24 then draws the mixture back to sponge wheel for backwashing and preheating. After that, aluminum coil 1 enters cleaning box 30, where it undergoes final cleaning by cleaning wheel 31, secondary hot water rinsing by sprayer 34, and drying by dryer 35. Wastewater is circulated in collection box 21, and aluminum shavings are filtered by sponge wheel. This achieves efficient cleaning and drying of oil stains and aluminum shavings on the surface of aluminum coil 1, with low cost, easy replacement of sponge wheel, and good cleaning effect.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A surface treatment apparatus for aluminum coils, comprising a main side plate (2) and a secondary side plate (3), wherein an aluminum coil (1) is inserted between the main side plate (2) and the secondary side plate (3), characterized in that: A collection box (21) is installed at the lower end of the main side plate (2) and the secondary side plate (3). The upper and lower sides of the aluminum coil (1) are respectively in contact with the upper sponge wheel (4) and the lower sponge wheel (5). A positioning frame (6) is installed through the cavity of the upper sponge wheel (4) and the lower sponge wheel (5). The two ends of the positioning frame (6) are rotatably connected to the main side plate (2) and the secondary side plate (3). An infusion tube (7) is inserted into the cavity of each positioning frame (6). A conduit (22) is fixed to the side surface of each infusion tube (7) near the end of the main side plate (2). A suction tube (23) is installed at one end of the two conduits (22). The suction tube (23) is inserted into the bottom of the inner cavity of the collection box (21). A rotatable spiral rod (24) is provided in the cavity of the suction tube (23). The outer wall of the upper sponge wheel (4) abuts against the porous pressure wheel (9), and the interior of the porous pressure wheel (9) is provided with a drainage structure. The outer side of the lower sponge wheel (5) abuts against the auxiliary pressure wheel (14). Two sprayers (15) are installed on one side of the main side plate (2), and the sprayers (15) can spray water mist onto the surface of the aluminum coil (1). Two water suction wheels (17) are also symmetrically rotated between the main side plate (2) and the secondary side plate (3), and the water suction wheels (17) abut against the outer surface of the aluminum coil (1). Two air outlet pipes (16) are also inserted between the main side plate (2) and the secondary side plate (3), and the air outlet pipes (16) are located on the side close to the water suction wheel (17). One end of the two air outlet pipes (16) is equipped with an exhaust structure, which can exhaust air into the interior of the porous pressure roller (9).

2. The surface treatment apparatus for aluminum coils according to claim 1, characterized in that: The drainage structure includes a drainage tube (10), which is rotatably connected to the cavity of the porous pressure roller (9). One end of the drainage tube (10) is inserted into the main side plate (2). The surface of the porous pressure roller (9) has several through holes. A storage chamber (8) is installed at the position where the two infusion pipes (7) are opposite to each other, and the storage chamber (8) is connected to the infusion pipe (7). The upper ends of the main side plate (2) and the secondary side plate (3) are jointly equipped with a top cover (29), and the lower surface of the top cover (29) is in contact with the upper sponge wheel (4) and the water absorption wheel (17).

3. The surface treatment apparatus for aluminum coils according to claim 2, characterized in that: A fixing frame (12) is fixed to one end of the drain tube (10) extending out of the outer wall of the main side plate (2). The fixing frame (12) is connected to the outer wall of the main side plate (2) by screws. A vertical tube (13) is installed on the lower surface of the drain tube (10) near the fixing frame (12). A collector (39) is provided on the lower side of the auxiliary pressure roller (14).

4. The surface treatment apparatus for aluminum coils according to claim 3, characterized in that: The exhaust structure includes a manifold (37), which is fixed to one end of the two exhaust pipes (16) extending out of the outer side wall of the sub-side plate (3). An L-shaped pipe (38) is fixed to the side surface of the manifold (37). An air pipe (11) is fixed to the side of the L-shaped pipe (38) near the porous pressure roller (9), and the air pipe (11) is inserted into the cavity of the porous pressure roller (9). An exhaust port (111) is opened at the lower end of the air pipe (11).

5. The surface treatment apparatus for aluminum coils according to claim 4, characterized in that: Two sprayers (15) are connected to an outer pipe (40) at one end of the outer side wall of the main side plate (2). A brushless motor (28) is connected to the outer side wall of the main side plate (2). A drive wheel (26) is connected to the output end of the brushless motor (28). A driven wheel (25) is connected to the outer side wall of the upper end of the spiral rod (24). A transmission belt (27) is sleeved between the driven wheel (25) and the drive wheel (26). A gear set (18) is installed at one end of the two water suction wheels (17).

6. The surface treatment apparatus for aluminum coils according to claim 5, characterized in that: Each positioning frame (6) is fitted with a pulley (19) at one end of the outer side wall of the main side plate (2), and a belt (20) is fitted between the two pulleys (19), and the belt (20) connects the two pulleys (19) in a figure-eight shape.

7. The surface treatment apparatus for aluminum coils according to claim 6, characterized in that: A cleaning box (30) is provided on the side of the suction wheel (17) away from the upper sponge wheel (4), and the cleaning box (30) is connected to the collection box (21). Three guide wheels (36) are provided in the cavity of the cleaning box (30), and the guide wheels (36) all abut against the outer wall of the aluminum coil (1). Two water sprayers (34) are fixedly attached to the inner wall of the cleaning box (30) near the suction wheel (17), and the output ends of the two water sprayers (34) face the upper and lower sides of the aluminum coil (1) respectively. One end of the two water sprayers (34) is connected to an outer pipe two (41). Two dryers (35) are installed on the inner wall of the cleaning box (30) away from the suction wheel (17), and the output ends of the two dryers (35) also face the upper and lower sides of the aluminum coil (1) respectively.

8. The surface treatment apparatus for aluminum coils according to claim 7, characterized in that: The inner wall of the cleaning box (30) is rotatably connected to two cleaning wheels (31) that abut against the corresponding water suction wheel (17), and each cleaning wheel (31) is in contact with the surface of the aluminum coil (1). The outer wall of the cleaning box (30) is fixedly connected to a cleaning liquid injector (33), and the output end of the cleaning liquid injector (33) is rotatably connected to the two cleaning wheels (31). The outer wall of the cleaning wheel (31) is provided with several drainage holes (32).

9. A surface treatment method for aluminum coils, characterized in that: This method, based on the surface treatment apparatus for aluminum coils as described in claim 8, includes the following steps: S1. After inserting the aluminum coil (1) between the main side plate (2) and the secondary side plate (3), the surface of the aluminum coil (1) is initially wiped by rotating the upper sponge wheel (4) and the lower sponge wheel (5). At the same time, when the screw rod (24) rotates in the opposite direction, it blows air into the collection box (21), so that the air carrying heat flows into the interior of the exhaust pipe (16) quickly, which accelerates the flow rate of hot air in the area of ​​the exhaust pipe (16) and promotes the melting efficiency of the oil stains on the surface of the aluminum coil (1). At the same time, the temperature inside the porous pressure roller (9) is increased by the exhaust structure to heat the surface of the lower sponge wheel (5). S2. Then, during the process of passing through the sprayer (15), the sprayer (15) will continuously spray hot water at 50 degrees Celsius onto the upper and lower surfaces of the aluminum coil (1) to soften the oil stains on the surface of the aluminum coil (1). Then, the oil and water mixture on the surface of the aluminum coil (1) will be wiped clean by the water suction wheel (17). Then, the cleaned water will be stored inside the collection box (21). S3. The oil-water mixture inside the collection box (21) is extracted and transferred to the cavity of the upper sponge wheel (4) and the lower sponge wheel (5) by the screw rod (24), so that the upper sponge wheel (4) and the lower sponge wheel (5) are backwashed and preheated. While cleaning the surface of the upper sponge wheel (4) and the lower sponge wheel (5), the cleaning effect on the surface of the aluminum coil (1) can be improved, so that the surface of the aluminum coil (1) can be preheated.

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