Copper foil acid and alkali cleaning line

Abstract

The application discloses a copper foil acid-alkali cleaning line, which comprises a base and a winding machine, the winding machine is fixed on the upper end of the base and is used to drive the copper foil to run, the upper end of the base is provided with a cleaning tank and a hot water rinsing assembly, the cleaning tank and the hot water rinsing assembly are sequentially arranged along the running direction of the copper foil, a plurality of liquid spraying pipes are arranged in the cleaning tank and symmetrically distributed on both sides of the copper foil, a plurality of spray heads are communicated with one side of the liquid spraying pipe close to the copper foil, two storage boxes for storing degreasing liquid and pickling liquid respectively are arranged on the upper end of the base, the liquid spraying pipes are communicated with the two storage boxes through pipelines, a shutoff valve is arranged at one end of the liquid spraying pipe and is used to control the communication between the liquid spraying pipe and the storage box, and the hot water rinsing assembly is used to remove the residual liquid on the surface of the copper foil. The application has the effect of reducing the manufacturing cost of the cleaning line equipment.

Description

Technical Field

[0001] This invention relates to the field of copper foil surface treatment technology, and in particular to a copper foil acid and alkali cleaning line. Background Technology

[0002] Copper foil has wide applications in numerous industries, including electronics manufacturing and battery production. As these industries continue to develop, the requirements for the quality and performance of copper foil are becoming increasingly stringent. During the production and processing of copper foil, various impurities, oil stains, and oxides adhere to its surface. These impurities severely affect the conductivity, corrosion resistance, and other properties of the copper foil, thereby impacting the quality and stability of products using it. Therefore, effective cleaning and treatment of copper foil to remove surface impurities and contaminants has become a crucial step in improving its quality and performance. This is of great significance for enhancing the quality of related products and promoting industrial development.

[0003] In the past, copper foil cleaning processes mainly relied on degreasing solution brushing and pickling solution pickling to address the issues of residual impurities and oxide layers on the copper foil surface. Degreasing solution brushing removes impurities such as rolling oil from the copper foil surface through a chemical reaction between the degreasing solution and the impurities, followed by mechanical brushing. For removing the oxide layer from the copper foil surface, pickling solution pickling is often used, where the pickling solution chemically reacts with the oxide layer to dissolve it.

[0004] Regarding the aforementioned technologies, the degreasing solution brushing and pickling solution pickling employ independent tank designs, which not only require a significant investment of manpower and resources for design and commissioning, but also necessitate that each tank be equipped with an independent system, with numerous interconnected pipes, valves, pumps, and other components. This redundant configuration makes the equipment structure extremely complex, thereby increasing the design and manufacturing costs. Summary of the Invention

[0005] To reduce the manufacturing cost of cleaning line equipment, this application provides a copper foil acid and alkali cleaning line.

[0006] This application provides a copper foil acid and alkali cleaning line, which adopts the following technical solution: A copper foil acid and alkali cleaning line includes a base and a winding machine. The winding machine is fixed to the upper end of the base and is used to drive the copper foil. The upper end of the base is provided with a cleaning tank and a hot water rinsing assembly. The cleaning tank and the hot water rinsing assembly are arranged sequentially along the running direction of the copper foil. The cleaning tank is provided with several spray pipes, which are symmetrically distributed on both sides of the copper foil. The side of the spray pipe closest to the copper foil is connected to several nozzles. The upper end of the base is provided with two storage tanks for storing degreasing solution and pickling solution, respectively. The spray pipes are connected to the two storage tanks through pipelines. One end of the spray pipe is provided with an on / off valve, which is used to control the connection between the spray pipe and the storage tank. The hot water rinsing assembly is used to remove residual liquid from the surface of the copper foil.

[0007] By adopting the above technical solution, the winding machine drives the copper foil, causing it to pass sequentially through the cleaning tank and the hot water rinsing assembly. Spray pipes symmetrically distributed on both sides of the copper foil within the cleaning tank spray degreasing and pickling solutions onto the foil using nozzles, effectively removing grease and impurities from the copper foil surface and cleaning it. The hot water rinsing assembly removes any residual liquid from the copper foil surface during the cleaning process, ensuring surface cleanliness and improving the cleaning quality. This provides a good foundation for subsequent processing. Simultaneously, the cleaning tank integrates degreasing and pickling functions, dynamically switching the degreasing and pickling solution pipelines via on / off valves. This reduces the mechanical redundancy caused by separate tanks for degreasing and pickling, thereby lowering the equipment's manufacturing cost.

[0008] Optionally, a drying chamber is provided at the upper end of the base. The drying chamber is located on the side of the hot water rinsing assembly away from the cleaning tank. The drying chamber is equipped with two sets of hot air circulation systems, which are located on both sides of the copper foil.

[0009] By adopting the above technical solution, after the hot water rinsing component removes the residual liquid on the surface of the copper foil, the hot air circulation system located on both sides of the copper foil can dry it from both sides at the same time, making the copper foil more evenly heated, with better drying effect and higher efficiency, providing a good foundation for further processing of the copper foil.

[0010] Optionally, a plasma degreasing component is provided on the side of the drying chamber away from the hot water rinsing component. The plasma degreasing component includes a gas delivery system, an exhaust system, and a high-voltage power supply. The gas delivery system is used to connect nitrogen and compressed air, the exhaust system is used to decompose ozone, and the high-voltage power supply is used to match the corresponding power. A passivation component for spraying passivation liquid onto copper foil is provided on the side of the plasma degreasing component away from the drying chamber.

[0011] By adopting the above technical solution, the gas delivery system introduces nitrogen and compressed air, which generate plasma under the action of a high-voltage power supply. Through high-energy electron bombardment and reaction with active particles, residual grease and organic matter on the surface of copper foil are decomposed, improving the degreasing effect. The exhaust system can decompose ozone, avoiding ozone from harming the environment and operators, while ensuring the safety and stability of the plasma degreasing process. After the copper foil has undergone plasma degreasing, the passivation component sprays passivation liquid onto its surface in a timely manner, forming a passivation film on the surface of the copper foil, enhancing the copper foil's oxidation resistance and corrosion resistance, extending the service life of the copper foil, and improving the quality and performance of the copper foil.

[0012] Optionally, the bottom of the cleaning tank is provided with a degreasing liquid outlet and a pickling liquid outlet. The degreasing liquid outlet and the pickling liquid outlet are respectively connected to independent liquid pipelines. One end of each liquid pipeline is equipped with an on / off valve. Both the degreasing liquid outlet and the pickling liquid outlet are equipped with removable filters.

[0013] By adopting the above technical solution, the degreasing liquid outlet and the pickling liquid outlet can discharge degreasing liquid and pickling liquid separately. With independent liquid pipelines, the two liquids can be discharged separately, reducing the probability of mixing. An on / off valve at one end of the liquid pipeline allows for flexible control of the discharge of degreasing liquid and pickling liquid, facilitating operation according to actual conditions. The filter screen effectively filters impurities from the degreasing liquid and pickling liquid in the cleaning tank, reducing the amount of impurities entering the liquid pipeline and improving the convenience of liquid recovery. The detachable design facilitates regular cleaning or replacement of the filter screen, simplifying maintenance.

[0014] Optionally, the hot water rinsing assembly includes a rinsing tank, several drain pipes, and several spray heads. The rinsing tank is fixed to the upper end of the base. A hot water pipe is provided at the upper end of the rinsing tank. Several drain pipes are located inside the rinsing tank and are symmetrically distributed on both sides of the copper foil. All drain pipes are connected to the hot water pipes. Several spray heads are fixed to the side of the drain pipes near the copper foil and are connected to the drain pipes.

[0015] By adopting the above technical solution, the hot water pipe supplies water to the drain pipe connected to it, and the spray head is connected to the drain pipe, so that the spray head can spray water onto the copper foil from both sides at the same time, so as to achieve a comprehensive and uniform rinsing of the copper foil, effectively removing residual degreasing liquid and pickling liquid on the surface of the copper foil, improving the cleaning quality of the copper foil, and providing cleaner copper foil for subsequent processing.

[0016] Optionally, a pre-wash tank is fixed at the upper end of the base. The pre-wash tank is located on the side of the cleaning tank away from the hot water rinsing components. Several spray pipes are provided in the pre-wash tank. The spray pipes are symmetrically distributed on both sides of the copper foil. Several nozzles are connected to the side of the spray pipes closest to the copper foil. A connecting pipe is connected to the lower end of the rinsing tank. The connecting pipe is connected to all the spray pipes.

[0017] By adopting the above technical solution, spray pipes symmetrically distributed on both sides of the copper foil are installed in the pre-washing tank, and several nozzles are connected to the spray pipes near the copper foil. This allows for comprehensive spraying and cleaning of the copper foil from both sides, quickly rinsing away large particles of impurities on the copper foil surface and reducing the probability of wear caused by large particles of impurities during subsequent brushing. The lower end of the rinsing tank is connected to all the spray pipes through a connecting pipe, enabling the reuse of water in the rinsing tank. Water discharged from the rinsing tank can be used for spraying in the pre-washing tank, reducing equipment operating costs.

[0018] Optionally, a bracket is fixed to the upper end of the base. The bracket is located on the side of the pre-washing tank away from the washing tank. Two conveying rollers are provided at the upper end of the bracket. The copper foil is located between the two conveying rollers, and the conveying rollers are in contact with the surface of the copper foil. The conveying rollers are slidably connected to the bracket in a vertical direction. Connecting rods are rotatably connected to both ends of the conveying rollers. Corresponding sliding grooves are opened on the side wall of the bracket. The connecting rods are inserted into the sliding grooves and slide along the sliding grooves. A locking block is provided at the end of the connecting rod away from the conveying rollers. The locking block is threadedly connected to the connecting rod.

[0019] By adopting the above technical solution, the two conveying rollers are in contact with the surface of the copper foil and sandwich the copper foil in the middle, so that the copper foil can maintain a stable position and state during the conveying process, effectively reducing the probability of the copper foil wrinkling during operation. The connecting rod slides along the chute, and the distance between the two conveying rollers can be flexibly adjusted according to the thickness of the copper foil to adapt to the conveying needs of copper foil of different thicknesses, thereby improving the applicability and compatibility of the equipment with copper foil of different specifications. The locking block is threadedly connected to the connecting rod to lock the connecting rod, reducing the displacement of the conveying rollers due to vibration during long-term high-speed operation and improving the stability of the equipment.

[0020] Optionally, the cleaning tank is equipped with two brush rollers, which are located on both sides of the copper foil. The brush rollers are rotatably connected to the cleaning tank. The cleaning tank is equipped with a motor that drives the brush rollers to rotate. The motor is slidably connected to the cleaning tank along the length of the cleaning tank.

[0021] By adopting the above technical solution, the motor drives the brush roller to rotate, which can simultaneously brush both sides of the copper foil, effectively removing contaminants from the surface of the copper foil. The motor is slidably connected to the cleaning tank along the length of the cleaning tank, allowing the brush roller to move within the cleaning tank, expanding the brushing range, enabling more comprehensive and thorough cleaning of the copper foil, and improving the cleaning effect.

[0022] Optionally, the output end of the cleaning tank is provided with two scrapers, which are symmetrically distributed on both sides of the copper foil. The scrapers are slidably connected to the inner wall of the cleaning tank in the vertical direction. A silicone layer is provided on the side of the scraper near the copper foil. The silicone layer is made of elastic material. An elastic element is fixed between the scraper and the inner wall of the cleaning tank. The elastic element is used to drive the scraper to adhere to the surface of the copper foil.

[0023] By adopting the above technical solution, the scraper can promptly clean the liquid and other substances adhering to the copper foil surface after cleaning, making the copper foil surface cleaner when it leaves the cleaning tank, improving the effect of the next processing step. The silicone layer can better adapt to the copper foil surface, enhance the cleaning effect, reduce scratches on the copper foil surface, and protect the integrity of the copper foil. Under the action of the elastic force of the elastic element, the scraper always adheres to the copper foil surface, ensuring that the scraper continuously and effectively cleans the copper foil surface.

[0024] Optionally, a cleaning brush is fixed on the side of the scraper near the brush roller, and the cleaning brush is used to clean the brush roller.

[0025] By adopting the above technical solution, after the copper foil is cleaned, the brush roller moves to the cleaning brush to clean it, effectively removing residual impurities, oil stains and copper shavings on the surface of the brush roller, reducing the accumulation of these impurities on the brush roller and affecting the cleaning effect of the brush roller on the copper foil.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The spray pipes symmetrically distributed on both sides of the copper foil in the cleaning tank use nozzles to spray degreasing solution and pickling solution onto the copper foil, realizing the integrated degreasing and pickling functions of the cleaning tank. The degreasing solution and pickling solution pipelines are dynamically switched by the on-off valve, reducing the mechanical structural redundancy caused by separate tanks for degreasing solution cleaning and pickling solution cleaning, thereby reducing the manufacturing cost of the equipment. 2. After the copper foil has undergone plasma degreasing, the passivation component sprays passivation liquid onto its surface in a timely manner to form a passivation film on the copper foil surface, thereby enhancing the copper foil's oxidation resistance and corrosion resistance, extending its service life, and improving its quality and performance. 3. The connecting rod slides along the chute, which can flexibly adjust the distance between the two conveying rollers according to the thickness of the copper foil to adapt to the conveying needs of copper foil of different thicknesses, thereby improving the applicability and compatibility of the equipment with copper foil of different specifications. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a copper foil acid and alkali cleaning line.

[0028] Figure 2 This is a cross-sectional schematic diagram designed to highlight the passivation box connection structure.

[0029] Figure 3 This is a schematic diagram designed to highlight the connection structure of the rinsing tank.

[0030] Figure 4 This is a cross-sectional schematic diagram designed to highlight the connection structure of the cleaning tank.

[0031] Figure 5 This is a schematic diagram designed to highlight the brush roller connection structure.

[0032] Figure 6 This is a schematic diagram designed to highlight the connection structure of the conveyor rollers.

[0033] Explanation of reference numerals in the attached drawings: 1. Base; 11. Storage box; 12. Drying box one; 13. Plasma degreasing assembly; 14. Drying box two; 15. Winding machine; 2. Cleaning tank; 21. Spray pipe; 22. Nozzle one; 23. On / off valve; 24. Opening / closing valve; 25. Liquid pipeline; 26. Brush roller; 261. Motor one; 262. Lead screw; 263. Motor two; 27. Scraper; 271. Elastic element; 272. Cleaning brush; 3. Pre-wash tank; 31. Spray pipe; 32. Nozzle two; 4. Rinse tank; 41. Drain pipe; 42. Spray head; 43. Hot water pipe; 5. Support; 51. Conveyor roller; 52. Connecting rod; 53. Locking block; 6. Copper foil; 7. Passivation assembly; 71. Passivation box; 72. Conveyor pipe; 73. Nozzle three. Detailed Implementation

[0034] The present application will be further described in detail below with reference to all the accompanying drawings.

[0035] This application discloses an acid and alkali cleaning line for copper foil. Example

[0036] Reference Figure 1 and Figure 2 A copper foil acid and alkali cleaning line includes a base 1 and a winding machine 15. The winding machine 15 is fixed to the upper end of the base 1. When the copper foil 6 is cleaned, the winding machine 15 moves to drive the copper foil 6 to move. The upper end of the base 1 is provided with a cleaning tank 2, a hot water rinsing component, a drying box 12, a plasma degreasing component 13, and a passivation component 7 in sequence along the running direction of the copper foil 6. The upper end of the base 1 is provided with two storage tanks 11 for storing degreasing solution and pickling solution, respectively. The cleaning tank 2 is provided with a plurality of spray pipes 21. The plurality of spray pipes 21 are symmetrically distributed on both sides of the copper foil 6. The spray pipes 21 are connected to the two storage tanks 11 through pipelines, and the end of the spray pipe 21 connected to the storage tank 11 is provided with an on / off valve 23.

[0037] Reference Figure 2 and Figure 3When the copper foil 6 is being cleaned, the on / off valve 23 connecting the spray pipe 21 to the storage tank 11 for storing degreasing solution is opened, and the on / off valve 23 connecting the spray pipe 21 to the storage tank 11 for storing pickling solution is closed. At this time, the degreasing solution flows from the storage tank 11 to the spray pipe 21. Several nozzles 22 are connected to the side of the spray pipe 21 near the copper foil 6. The degreasing solution is sprayed onto both sides of the copper foil 6 through the nozzles 22, achieving degreasing cleaning and effectively removing grease from the surface of the copper foil 6. After the degreasing cleaning is completed, the on / off valve 23 connecting the spray pipe 21 to the storage tank 11 for storing pickling solution is opened, and the on / off valve 23 connecting the spray pipe 21 to the storage tank 11 for storing degreasing solution is closed. At this time, the pickling solution flows from the storage tank 11 to the spray pipe 21, and then the pickling solution is sprayed onto both sides of the copper foil 6 through the nozzles 22, achieving pickling cleaning and effectively removing oxides from the surface of the copper foil 6. The on / off valve 23 dynamically switches between degreasing solution cleaning and pickling solution cleaning, reducing the mechanical structural redundancy caused by separate tanks for degreasing solution cleaning and pickling solution cleaning, thereby reducing the manufacturing cost of the equipment.

[0038] Reference Figure 3 and Figure 4 The bottom of the cleaning tank 2 is equipped with a degreasing liquid discharge port and a pickling liquid discharge port, each connected to an independent liquid pipeline 25. This allows for separate discharge of the pickling and degreasing liquids, reducing the probability of mixing. Each liquid pipeline 25 has an on / off valve 24 at one end. When the nozzle 22 sprays degreasing liquid, the on / off valve 24 at the degreasing liquid discharge port opens, while the valve at the pickling liquid discharge port closes, allowing the degreasing liquid to flow out. When the nozzle 22 sprays pickling liquid, the on / off valve 24 at the pickling liquid discharge port opens, while the valve at the degreasing liquid discharge port closes, allowing the pickling liquid to flow out, achieving separate recycling. Both the degreasing and pickling liquid discharge ports are equipped with removable filters that effectively filter impurities from the degreasing and pickling liquids in the cleaning tank 2, reducing the amount of impurities entering the liquid pipeline 25 and improving the convenience of liquid recycling. Meanwhile, the detachable design makes it easy to clean or replace the filter regularly, and maintenance is simple.

[0039] Reference Figure 4 and Figure 5 A second motor 263 is fixedly installed on one side of the cleaning tank 2. A lead screw 262 is installed inside the cleaning tank 2 and is rotatably connected to the cleaning tank 2. The output shaft of the second motor 263 is coaxially fixed with the lead screw 262. Two brush rollers 26 are installed inside the cleaning tank 2. The brush rollers 26 are made of flexible material. The two brush rollers 26 are located on both sides of the copper foil 6 and are rotatably connected to the cleaning tank 2. A first motor 261 is installed inside the cleaning tank 2 to drive the brush rollers 26 to rotate. The first motor 261 is slidably connected to the cleaning tank 2 along the length of the cleaning tank 2. A movable plate is provided at one end of the lead screw 262. The movable plate is fixedly connected to the two first motors 261 and is threadedly connected to the lead screw 262.

[0040] Reference Figure 4 and Figure 5 When the copper foil 6 is cleaned in the cleaning tank 2, motor 261 drives the brush roller 26 to rotate, which can simultaneously brush both sides of the copper foil 6, effectively removing contaminants from the surface of the copper foil 6. At the same time, motor 263 starts and drives the lead screw 262 to rotate. The cleaning tank 2 limits the movement of the moving plate, causing the moving plate to move along the length of the cleaning tank 2, thereby driving motor 261 to slide. This allows the brush roller 26 to move within the cleaning tank 2, expanding the brushing range and enabling a more comprehensive and thorough cleaning of the copper foil 6, thus improving the cleaning effect.

[0041] Reference Figure 3 and Figure 4 The hot water rinsing assembly includes a rinsing tank 4, several drain pipes 41, and several spray nozzles 42. The rinsing tank 4 is fixed to the upper end of the base 1. The upper end of the cleaning tank 2 is provided with a hot water pipe 43. Several drain pipes 41 are located in the cleaning tank 2 and are symmetrically distributed on both sides of the copper foil 6. All drain pipes 41 are connected to the hot water pipes 43. After the copper foil 6 is cleaned by degreasing solution and pickling solution, it enters the rinsing tank 4. The hot water pipes 43 supply water to the drain pipes 41 connected to them. Several spray nozzles 42 are fixed to the side of the drain pipes 41 near the copper foil 6. The spray nozzles 42 are connected to the drain pipes 41, so that the spray nozzles 42 can spray water on the copper foil 6 from both sides of the copper foil 6 at the same time, so as to achieve a comprehensive and uniform rinsing of the copper foil 6, effectively removing residual degreasing solution and pickling solution from the surface of the copper foil 6, improving the cleaning quality of the copper foil 6, and providing a cleaner copper foil 6 for subsequent processing. The drain pipe 41 is rotatably connected to the hot water pipe 43, and the angle of the drain pipe 41 can be adjusted according to the actual situation, which helps to improve the flexibility of the device.

[0042] Reference Figure 1 and Figure 2 After the copper foil 6 passes through the hot water rinsing assembly to remove residual liquid from its surface, it enters the drying chamber 12. The drying chamber 12 is equipped with two sets of hot air circulation systems, which are located on both sides of the copper foil 6. The hot air circulation systems can dry the copper foil 6 from both sides simultaneously, making the copper foil 6 more evenly heated, resulting in better drying effect and higher efficiency, thus providing a good foundation for further processing of the copper foil 6.

[0043] Reference Figure 1After the copper foil 6 is dried in the drying oven 12, it reaches the plasma degreasing component 13. The plasma degreasing component 13 includes a gas delivery system, an exhaust system, and a high-voltage power supply. The gas delivery system introduces nitrogen and compressed air, and plasma is generated under the action of the high-voltage power supply. Through high-energy electron bombardment and reaction with active particles, the residual grease and organic matter on the surface of the copper foil 6 are decomposed, thereby improving the degreasing effect. The exhaust system can decompose ozone, avoiding ozone from causing harm to the environment and operators, while ensuring the safety and stability of the plasma degreasing process.

[0044] Reference Figure 1 and Figure 2 The passivation assembly 7 includes a passivation box 71, several conveying pipes 72, and several nozzles 73. The passivation box 71 is fixed to the upper end of the base 1. The several conveying pipes 72 are located inside the copper foil 6 and are symmetrically distributed on both sides of the copper foil 6. The nozzles 73 are located on the side of the conveying pipes 72 close to the copper foil 6 and are connected to the conveying pipes 72. The copper foil 6 moves into the passivation box 71. After the plasma degreasing assembly 13 degreases the copper foil 6, the conveying pipes 72 deliver passivation liquid to the nozzles 73. The nozzles 73 spray the passivation liquid onto the copper foil 6, so that a passivation film is formed on the surface of the copper foil 6, which enhances the oxidation resistance and corrosion resistance of the copper foil 6, extends the service life of the copper foil 6, and improves the quality and performance of the copper foil 6.

[0045] Reference Figure 1 and Figure 2 The upper end of the base 1 is equipped with a drying box 2 14. The drying box 2 14 is located on the side of the passivation box 71 away from the plasma degreasing component 13. After the copper foil 6 is passivated by the passivation liquid, it enters the drying box 2 14 for drying, thereby improving the treatment effect of the copper foil 6.

[0046] Reference Figure 1 and Figure 6 A bracket 5 is fixedly installed at the upper end of the base 1. The bracket 5 is located on the side of the cleaning tank 2 away from the hot water rinsing component. Two conveying rollers 51 are provided at the upper end of the bracket 5. The bracket 5 supports the conveying rollers 51. The copper foil 6 is located between the two conveying rollers 51, and the conveying rollers 51 are in contact with the surface of the copper foil 6. The two conveying rollers 51 are in contact with the surface of the copper foil 6 and sandwich the copper foil 6 in the middle, so that the copper foil 6 can maintain a stable position and state during the conveying process, effectively reducing the probability of the copper foil 6 wrinkling during operation.

[0047] Reference Figure 6The conveyor roller 51 is slidably connected to the support 5 in a vertical direction. Connecting rods 52 are rotatably connected to both ends of the conveyor roller 51. Corresponding grooves are provided on the side wall of the support 5, and the connecting rods 52 are inserted into and slide along the grooves. The distance between the two conveyor rollers 51 can be flexibly adjusted according to the thickness of the copper foil 6 to adapt to the conveying requirements of copper foil 6 of different thicknesses, improving the applicability and compatibility of the equipment with copper foil 6 of different specifications. A locking block 53 is provided at the end of the connecting rod 52 away from the conveyor roller 51. The locking block 53 is threadedly connected to the connecting rod 52. After the position of the connecting rod 52 is adjusted, rotating the locking block 53 locks the connecting rod 52, reducing displacement of the conveyor roller 51 due to vibration during long-term high-speed operation and improving the stability of the equipment.

[0048] Reference Figure 4 and Figure 5 A pre-washing tank 3 is fixedly installed at the upper end of the base 1. The pre-washing tank 3 is located between the cleaning tank 2 and the support 5. Several spray pipes 31 are installed in the pre-washing tank 3, which are symmetrically distributed on both sides of the copper foil 6. A connecting pipe is connected to the lower end of the rinsing tank 4. The connecting pipe is connected to all the spray pipes 31, which enables the reuse of water in the rinsing tank 4. The water discharged from the rinsing tank 4 is used for spraying in the pre-washing tank 3, reducing the equipment operating cost. Several nozzles 32 are connected to the side of the spray pipes 31 near the copper foil 6, which can spray and clean the copper foil 6 from both sides. This can quickly wash away large particles of impurities on the surface of the copper foil 6, reducing the probability of large particles of impurities causing wear to the surface of the copper foil 6 during subsequent washing.

[0049] Reference Figure 4 and Figure 5 The output end of the cleaning tank 2 is equipped with two scrapers 27, which are symmetrically distributed on both sides of the copper foil 6. The scrapers 27 are slidably connected to the inner wall of the cleaning tank 2 vertically. The two scrapers 27 work together to promptly remove liquids and other residues adhering to the surface of the copper foil 6 after cleaning, resulting in a cleaner surface when the copper foil 6 leaves the cleaning tank 2, improving the effectiveness of subsequent processing steps. Simultaneously, the scrapers 27 guide the surface of the copper foil 6, reducing the probability of wrinkles. A silicone layer, made of elastic material, is provided on the side of the scraper 27 closest to the copper foil 6. This silicone layer better adapts to the surface of the copper foil 6, enhancing the cleaning effect while reducing scratches and protecting the integrity of the copper foil 6. An elastic element 271, which can be a spring, is fixed between the scraper 27 and the inner wall of the cleaning tank 2. Under the elastic force of the elastic element 271, the scraper 27 remains in contact with the surface of the copper foil 6, suitable for copper foils of different thicknesses, ensuring continuous and effective cleaning of the copper foil 6 surface.

[0050] Reference Figure 4 and Figure 5A cleaning brush 272 is fixed on the side of the scraper 27 near the brush roller 26. After the copper foil 6 is cleaned, the motor 263 starts and drives the brush roller 26 to move to the cleaning brush 272. The motor 263 starts and drives the brush roller 26 to rotate, so that the cleaning brush 272 cleans the brush roller 26, effectively removing the impurities, oil stains and copper shavings remaining on the surface of the brush roller 26, reducing the accumulation of these impurities on the brush roller 26 and affecting the cleaning effect of the brush roller 26 on the copper foil 6.

[0051] The implementation principle of the copper foil acid-base cleaning line in this application embodiment is as follows: When the copper foil 6 is being cleaned, the on / off valve 23 connecting the spray pipe 21 to the storage tank 11 for storing degreasing solution is opened, and the on / off valve 23 connecting the spray pipe 21 to the storage tank 11 for storing pickling solution is closed. At this time, the degreasing solution flows from the storage tank 11 to the spray pipe 21. Several nozzles 22 are connected to the side of the spray pipe 21 near the copper foil 6. The degreasing solution is sprayed onto both sides of the copper foil 6 through the nozzles 22, achieving degreasing cleaning and effectively removing grease from the surface of the copper foil 6. After the degreasing cleaning is completed, the on / off valve 23 connecting the spray pipe 21 to the storage tank 11 for storing pickling solution is opened, and the on / off valve 23 connecting the spray pipe 21 to the storage tank 11 for storing degreasing solution is closed. At this time, the pickling solution flows from the storage tank 11 to the spray pipe 21, and then the pickling solution is sprayed onto both sides of the copper foil 6 through the nozzles 22, achieving pickling cleaning and effectively removing oxides from the surface of the copper foil 6. The on / off valve 23 dynamically switches between degreasing solution cleaning and pickling solution cleaning, reducing the mechanical structural redundancy caused by separate tanks for degreasing solution cleaning and pickling solution cleaning, thereby reducing the manufacturing cost of the equipment.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A copper foil acid-alkali cleaning line, comprising a base (1) and a winding machine (15), characterized in that: The winding machine (15) is fixed at the upper end of the base (1). The winding machine (15) is used to drive the copper foil (6) to run. The upper end of the base (1) is provided with a cleaning tank (2) and a hot water rinsing assembly. The cleaning tank (2) and the hot water rinsing assembly are arranged in sequence along the running direction of the copper foil (6). The cleaning tank (2) is provided with several spray pipes (21). The spray pipes (21) are symmetrically distributed on both sides of the copper foil (6). The side of the spray pipe (21) close to the copper foil (6) is connected to several nozzles (22). The upper end of the base (1) is provided with two storage tanks (11) for storing degreasing liquid and pickling liquid respectively. The spray pipe (21) is connected to the two storage tanks (11) through a pipeline. One end of the spray pipe (21) is provided with an on / off valve (23). The on / off valve (23) is used to control the connection between the spray pipe (21) and the storage tank (11). The hot water rinsing assembly is used to remove the liquid remaining on the surface of the copper foil (6).

2. The copper foil acid and alkali cleaning line according to claim 1, characterized in that: The upper end of the base (1) is provided with a drying box (12), which is located on the side of the hot water rinsing assembly away from the cleaning tank (2). The drying box (12) is provided with two sets of hot air circulation systems, which are located on both sides of the copper foil (6).

3. The copper foil acid-base cleaning line according to claim 2, characterized in that: A plasma degreasing component (13) is provided on the side of the drying chamber (12) away from the hot water rinsing component. The plasma degreasing component (13) includes a gas delivery system, an exhaust system and a high-voltage power supply. The gas delivery system is used to connect nitrogen and compressed air, the exhaust system is used to decompose ozone, and the high-voltage power supply is used to match the corresponding power. A passivation component (7) for spraying passivation liquid onto the copper foil (6) is provided on the side of the plasma degreasing component (13) away from the drying chamber (12).

4. The copper foil acid and alkali cleaning line according to claim 1, characterized in that: The bottom of the cleaning tank (2) is provided with a degreasing liquid outlet and a pickling liquid outlet. The degreasing liquid outlet and the pickling liquid outlet are respectively connected to independent liquid pipelines (25). One end of each liquid pipeline (25) is provided with an on / off valve (24). Both the degreasing liquid outlet and the pickling liquid outlet are provided with detachable filters.

5. The copper foil acid and alkali cleaning line according to claim 1, characterized in that: The hot water rinsing assembly includes a rinsing tank (4), several drain pipes (41) and several spray heads (42). The rinsing tank (4) is fixed to the upper end of the base (1). The upper end of the cleaning tank (2) is provided with a hot water pipe (43). Several drain pipes (41) are located in the cleaning tank (2). Several drain pipes (41) are symmetrically distributed on both sides of the copper foil (6). All drain pipes (41) are connected to the hot water pipes (43). Several spray heads (42) are fixed to the side of the drain pipes (41) close to the copper foil (6). The spray heads (42) are connected to the drain pipes (41).

6. The copper foil acid-base cleaning line according to claim 5, characterized in that: The upper end of the base (1) is fixed with a pre-wash tank (3). The pre-wash tank (3) is located on the side of the cleaning tank (2) away from the hot water rinsing component. The pre-wash tank (3) is provided with a number of spray pipes (31). The spray pipes (31) are symmetrically distributed on both sides of the copper foil (6). The side of the spray pipes (31) close to the copper foil (6) is connected to a number of nozzles (32). The lower end of the rinsing tank (4) is connected to a connecting pipe, which is connected to all the spray pipes (31).

7. The copper foil acid and alkali cleaning line according to claim 6, characterized in that: The upper end of the base (1) is fixed with a bracket (5). The bracket (5) is located on the side of the pre-washing tank (3) away from the washing tank (2). The upper end of the bracket (5) is provided with two conveying rollers (51). The copper foil (6) is located between the two conveying rollers (51), and the conveying rollers (51) are in contact with the surface of the copper foil (6). The conveying rollers (51) are slidably connected to the bracket (5) in the vertical direction. Both ends of the conveying rollers (51) are rotatably connected with connecting rods (52). The side wall of the bracket (5) is provided with corresponding sliding grooves. The connecting rods (52) are inserted into the sliding grooves and slide along the sliding grooves. The end of the connecting rod (52) away from the conveying rollers (51) is provided with a locking block (53). The locking block (53) is threadedly connected to the connecting rod (52).

8. The copper foil acid and alkali cleaning line according to claim 1, characterized in that: The cleaning tank (2) is provided with two brush rollers (26), which are located on both sides of the copper foil (6). The brush rollers (26) are rotatably connected to the cleaning tank (2). The cleaning tank (2) is provided with a motor (261) that drives the brush rollers (26) to rotate. The motor (261) is slidably connected to the cleaning tank (2) along the length of the cleaning tank (2).

9. The copper foil acid and alkali cleaning line according to claim 1, characterized in that: The output end of the cleaning tank (2) is provided with two scrapers (27). The two scrapers (27) are symmetrically distributed on both sides of the copper foil (6). The scrapers (27) are slidably connected to the inner wall of the cleaning tank (2) in the vertical direction. The scraper (27) is provided with a silicone layer on the side of the scraper (27) close to the copper foil (6). The silicone layer is made of elastic material. An elastic element (271) is fixed between the scraper (27) and the inner wall of the cleaning tank (2). The elastic element (271) is used to drive the scraper (27) to adhere to the surface of the copper foil (6).

10. A copper foil acid-base cleaning line according to claim 9, characterized in that: A cleaning brush (272) is fixed on the side of the scraper (27) near the brush roller (26), and the cleaning brush (272) is used to clean the brush roller (26).

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