A surface roughening treatment device for a rolled copper foil and a treatment method thereof

Abstract

The present application relates to copper foil production technical field, disclose a kind of calendered copper foil surface roughening treatment device and its processing method, comprising: electroplating roughening pool, the electroplating roughening pool is filled with roughening liquid, the electroplating roughening pool top fixedly installed with box, the box inner wall is fixedly installed with copper ion concentration meter, the detection head of the copper ion concentration meter is located in roughening liquid, the second electric cylinder of the present application is first driven to drive the sludge net plate to rise and salvage liquid level impurities, simultaneously through the sliding plate and linkage assembly drive lower limit roller to close so that calendered copper foil is relaxed, then through lifting frame, upper limit roller, lower limit roller rises, realize that calendered copper foil is re-tensioned and lifts off liquid level, finally cleaning assembly is comprehensively washed to sludge net plate and calendered copper foil, water interception plate is inclined to receive wastewater impurities to avoid secondary pollution, form the complete impurity processing procedure of impurity salvage, calendered copper foil lifting, accurate cleaning, wastewater collection.

Description

Technical Field

[0001] This invention relates to the field of copper foil production technology, and specifically to a surface roughening treatment device and method for rolled copper foil. Background Technology

[0002] The surface roughening treatment device for rolled copper foil is a special equipment used to improve the surface roughness of rolled copper foil and enhance its bonding strength with subsequent bonding materials. In the process, the physical pre-roughening of copper foil must be completed first, and then graded electroplating roughening is carried out through a double electroplating roughening chamber to form a uniform roughened coating, ensuring the peel strength and surface morphology of copper foil and meeting the production needs of downstream copper clad laminates and other products.

[0003] During the electroplating roughening process, the generated byproducts adhere to the copper foil when it is lifted from the liquid surface. This directly affects the surface quality and product yield of the roughened copper foil. Specifically, when the drive roller lifts the copper foil off the surface of the roughening liquid, on the one hand, suspended oxide particles and additive decomposition residues adhere firmly to the wet surface of the copper foil due to the surface tension of the liquid film, making it difficult to fall off naturally. On the other hand, the roughening liquid remaining on the surface of the copper foil contains electrolytes such as sulfate and sodium ions. If the copper foil is not washed with water in time after lifting, these electrolytes will form crystalline salt residues on the surface of the copper foil plating layer as the surface moisture evaporates rapidly. Such impurities not only damage the uniformity of the roughened plating layer but also affect the bonding strength between the copper foil and other materials, resulting in substandard peel strength. At the same time, the crystalline salt residues can cause localized electrochemical corrosion of the copper foil. Based on this, the present invention aims to provide a rolling copper foil surface roughening treatment device and method that can purify the roughening liquid in real time and simultaneously remove impurities adhering to the surface of the copper foil. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a device and method for roughening the surface of rolled copper foil, thereby solving the technical problems in the prior art.

[0005] An apparatus for roughening the surface of rolled copper foil, comprising: An electroplating roughening tank is filled with a roughening solution. A box is fixedly installed on the top of the electroplating roughening tank. A copper ion concentration meter is fixedly installed on the inner wall of the box. The detection head of the copper ion concentration meter is located in the roughening solution. One side of the electroplating roughening tank is connected to the inlet of a filter assembly, and the outlet of the filter assembly is connected to the box. The feeding assembly is disposed inside the box and includes two upper limit rollers and two lower limit rollers. The feeding assembly is used to feed rolled copper foil, which passes sequentially over the top of one upper limit roller, the bottom of two lower limit rollers and the top of another upper limit roller. The first electric cylinder is fixedly installed on the top of the housing. A lifting frame is fixedly installed on the movable end of the first electric cylinder. The lifting frame is slidably installed inside the housing and is driven by the first electric cylinder to lift. Two symmetrically arranged upper limit rollers are rotatably installed on the lifting frame. Two symmetrically arranged lower limit rollers are slidably installed on the lifting frame. The two lower limit rollers are located below the two upper limit rollers and between the two upper limit rollers. A slag-removing screen is located above two lower limit rollers. Two symmetrically arranged sliding plates are fixedly installed at the bottom of the slag-removing screen. The sliding plates are slidably connected to a lifting frame. A second electric cylinder is fixedly installed on the top plate of the lifting frame. The movable end of the second electric cylinder is fixedly connected to the top of the slag-removing screen. The slag-removing screen is driven to rise and fall by the second electric cylinder. A linkage component is provided on the sliding plate. The linkage component is connected to the two lower limit rollers. When the slag-removing screen rises, the slag-removing screen drives the sliding plate to rise synchronously. The sliding plate drives the two lower limit rollers to move closer together through the linkage component. When both the first and second electric cylinders retract, the upper and lower limit rollers are positioned above the liquid surface, and the upper and lower limit rollers tension the rolled copper foil. At this time, the cleaning assembly is used to clean the slag removal screen and the rolled copper foil.

[0006] As a further embodiment of the present invention: the feeding assembly further includes a conveying roller, a first guide roller, a second guide roller, a third guide roller, and a fourth guide roller. Both of the conveying rollers are rotatably mounted inside the housing, and the two conveying rollers clamp and convey the rolled copper foil. The conveying rollers are driven to rotate by a drive source. The first guide roller, the second guide roller, the third guide roller, and the fourth guide roller are all rotatably mounted inside the housing. Two coarse panel brushes are provided inside the housing. The two coarse panel brushes are respectively attached to both sides of the rolled copper foil. The rolled copper foil enters from one end of the housing, passes through the first guide roller, the conveying roller, the coarse panel brush, the second guide roller, one upper limit roller, two lower limit rollers, another upper limit roller, the third guide roller, and the fourth guide roller in sequence, and is discharged from the other end of the housing.

[0007] As a further embodiment of the present invention: the sliding plate is located between two lower limit rollers, the linkage assembly includes a round wheel, a square slider and a fixed plate, a round wheel is rotatably installed at both ends of each lower limit roller, a square slider is fixedly installed at the end of each round wheel away from the lower limit roller, a sliding groove is provided on the lifting frame, the square slider is slidably installed in the sliding groove, a fixed plate is fixedly installed on both sides of each sliding plate, an inclined groove is provided on the fixed plate, the inclined groove is inclined, and the horizontal height of the inclined groove near the sliding plate is less than the horizontal height of the inclined groove away from the sliding plate, the round wheel is slidably installed in the inclined groove.

[0008] As a further embodiment of the present invention: the cleaning assembly includes a rotating plate, a spray head, and a telescopic water pipe. Two rotating plates are rotatably installed on the top of the lifting frame. Each rotating plate is driven to rotate by a power component. Multiple spray heads are fixedly installed on each rotating plate at equal intervals. The water inlet end of each spray head is connected to the water outlet end of the telescopic water pipe. The water inlet end of the telescopic water pipe is located at the top of the tank and is connected to the water supply assembly. The water outlet end of the spray head faces the slag removal screen plate.

[0009] As a further aspect of the present invention: a slot is provided on one side of the box body, and two symmetrically arranged horizontal plates are fixedly installed on one side of the box body. A water-cutting plate is slidably installed between the two horizontal plates. The water-cutting plate is slidably connected to the slot, and the water-cutting plate is driven to move by an output source set on the horizontal plate. When both the first electric cylinder and the second electric cylinder retract, the driving assembly drives the water-cutting plate to extend into the box body. At this time, the water-cutting plate is located between the electroplating roughening tank and the lifting frame.

[0010] As a further embodiment of the present invention: a recycling tank is fixedly installed on one side of the electroplating roughening tank, both of the horizontal plates are located in the recycling tank, the water intercepting plate is arranged at an angle, and the horizontal height of the end of the water intercepting plate near the recycling tank is lower than the horizontal height of the end of the water intercepting plate away from the recycling tank.

[0011] As a further aspect of the present invention: a clean water tank is provided on one side of the electroplating roughening tank, the clean water tank is filled with clean water, the rolled copper foil enters the clean water tank after being discharged from the box, and a guiding component is provided in the clean water tank.

[0012] The objective of this invention can be achieved through the following technical solutions: A method for roughening the surface of rolled copper foil, the method being applied to a rolled copper foil surface roughening apparatus as described above, the method comprising the following steps: Step S1: Fill the electroplating roughening tank with a roughening solution of a preset concentration, and at the same time monitor the concentration of key components such as copper ions in the roughening solution in real time using a copper ion concentration meter. Step S2: Ensure that both the first electric cylinder and the second electric cylinder are in the extended state. At this time, the two lower limit rollers are far apart and both are in the roughening liquid. The rolled copper foil is tensioned by the feeding assembly. At this time, the rolled copper foil passes over the top of one upper limit roller, the bottom of the two lower limit rollers and the top of the other upper limit roller in sequence. Step S3: The feeding assembly drives the rolled copper foil to move at a set speed at a uniform speed to perform electroplating roughening. If the copper ion concentration meter detects that the concentration of the roughening liquid exceeds the threshold, the second electric cylinder is first activated to retract, which drives the slag removal screen and the sliding plate to rise. The slag removal screen removes impurities from the liquid surface. At the same time, the sliding plate drives the two lower limit rollers to approach through the linkage assembly, so that the rolled copper foil is relaxed. Step S4: Start the first electric cylinder to retract, driving the lifting frame to rise. The upper limit roller and the lower limit roller rise synchronously. The two lower limit rollers work together to re-tension the rolled copper foil and lift it away from the roughening liquid. Start the cleaning component to clean the impurities on the slag removal screen and the roughening liquid remaining on the surface of the rolled copper foil. Step S5: Start the filter assembly to filter the coarsening liquid and replenish the raw materials until the concentration monitored by the copper ion concentration meter returns to normal; reverse the start of the first and second electric cylinders to lower the lifting frame, reset the slag removal screen, move the two lower limit rollers away, and re-immerse the rolled copper foil in the coarsening liquid; restart the feeding assembly to restore the uniform speed of the rolled copper foil and the coarsening operation.

[0013] The beneficial effects of this invention are: 1. In this invention, when the concentration of the roughening solution is abnormal, the second electric cylinder first drives the slag-removing screen plate to rise and remove impurities from the liquid surface. Simultaneously, the sliding plate and linkage component drive the lower limit roller to approach and relax the rolled copper foil. Then, the first electric cylinder drives the lifting frame, upper limit roller, and lower limit roller to rise. Under the limit of the second guide roller and the third guide roller, the rolled copper foil is re-tensioned and lifted away from the liquid surface. Finally, the cleaning component washes the slag-removing screen plate and the rolled copper foil in all directions. The water intercepting plate is tilted to receive wastewater impurities to avoid secondary pollution. This forms a complete impurity treatment process of impurity removal, rolled copper foil lifting, precise cleaning, and wastewater collection. It avoids the problems of impurities adhering to the rolled copper foil, incomplete cleaning, and wastewater pollution of the roughening solution in traditional treatment, and ensures the cleanliness of the rolled copper foil surface. 2. In this invention, the concentration of the roughening solution in the electroplating roughening tank is monitored in real time by a copper ion concentration meter. When the concentration deviates from the threshold, the filter assembly is activated to realize the circulation filtration and component replenishment of the roughening solution, thereby reducing the generation of by-products such as oxide particles from the source. At the same time, the first electric cylinder and the second electric cylinder work together to drive the lifting frame, slag removal screen, upper limit roller, and lower limit roller to flexibly adjust the contact state between the rolled copper foil and the roughening solution, avoiding uneven coating of the rolled copper foil due to imbalance of the roughening solution components or improper contact. 3. In this invention, the water-cutting plate extends into the tank through the slot, and its inclined end is precisely connected to the recycling tank. During cleaning, the rotating plate drives the spray head to rotate and spray water. Wastewater and impurities flow into the recycling tank along the inclined surface of the water-cutting plate for collection. After cleaning, the water-cutting plate is reset and the slot is sealed. In this way, the wastewater and impurities are collected without leakage through inclined guidance and precise connection, avoiding contamination of the roughening solution in the electroplating roughening tank, ensuring the stability of the roughening solution composition to reduce the generation of by-products. At the same time, the reset and sealing of the water-cutting plate ensures the airtightness of the tank, preventing external impurities from interfering with the roughening process, and further improving the surface roughening quality of rolled copper foil. Attached Figure Description

[0014] The invention will now be further described with reference to the accompanying drawings.

[0015] Figure 1This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional structural schematic diagram of the box body in this invention; Figure 3 In this invention Figure 2 A schematic diagram of the structure from head-up view; Figure 4 This is a cross-sectional structural schematic diagram of the recycling pool in this invention; Figure 5 This is a schematic diagram of the structure of the water interception plate entering the box in this invention; Figure 6 This is a schematic diagram of the lower limit roller in this invention; Figure 7 This is a schematic diagram of the lifting frame in this invention; Figure 8 This is a schematic diagram of the rising structure of the slag removal mesh plate in this invention.

[0016] In the diagram: 1. Electroplating roughening tank; 2. Box body; 3. Clean water tank; 4. Filter assembly; 5. Rolled copper foil; 6. Conveying roller; 7. Roughening panel brush; 8. Copper ion concentration meter; 9. First electric cylinder; 10. Lifting frame; 11. Second electric cylinder; 12. Slag removal screen; 13. Upper limit roller; 14. Lower limit roller; 15. Spray head; 16. Telescopic water pipe; 17. Water intercepting plate; 18. Groove; 19. Recycling tank; 20. Horizontal plate; 21. Rotating plate; 22. Round wheel; 23. Square slider; 24. Slide groove; 25. Fixed plate; 26. Inclined groove; 27. Sliding plate; 28. First guide roller; 29. ​​Second guide roller; 30. Third guide roller; 31. Fourth guide roller. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-8 As shown, the present invention is a surface roughening treatment device for rolled copper foil, comprising: An electroplating roughening tank 1 is filled with a roughening solution. A box 2 is fixedly installed on the top of the electroplating roughening tank 1. A copper ion concentration meter 8 is fixedly installed on the inner wall of the box 2. The detection head of the copper ion concentration meter 8 is located in the roughening solution. One side of the electroplating roughening tank 1 is connected to the inlet of the filter assembly 4, and the outlet of the filter assembly 4 is connected to the box 2. The material conveying assembly is disposed inside the housing 2. The material conveying assembly includes two upper limit rollers 13 and two lower limit rollers 14. The material conveying assembly is used to convey the rolled copper foil 5. The rolled copper foil 5 passes sequentially around the top of one upper limit roller 13, the bottom of the two lower limit rollers 14 and the top of the other upper limit roller 13. A first electric cylinder 9 is fixedly installed on the top of the housing 2. A lifting frame 10 is fixedly installed on the movable end of the first electric cylinder 9. The lifting frame 10 is slidably installed inside the housing 2 and is driven by the first electric cylinder 9 to lift. Two symmetrically arranged upper limit rollers 13 are rotatably installed on the lifting frame 10. Two symmetrically arranged lower limit rollers 14 are slidably installed on the lifting frame 10. The two lower limit rollers 14 are located below the two upper limit rollers 13 and between the two upper limit rollers 13. A slag-removing screen 12 is located above two lower limit rollers 14. Two symmetrically arranged sliding plates 27 are fixedly installed at the bottom of the slag-removing screen 12. The sliding plates 27 are slidably connected to the lifting frame 10. A second electric cylinder 11 is fixedly installed on the top plate of the lifting frame 10. The movable end of the second electric cylinder 11 is fixedly connected to the top of the slag-removing screen 12. The slag-removing screen 12 is driven to rise and fall by the second electric cylinder 11. A linkage component is provided on the sliding plate 27. The linkage component is connected to the two lower limit rollers 14. When the slag-removing screen 12 rises, the slag-removing screen 12 drives the sliding plate 27 to rise synchronously. The sliding plate 27 drives the two lower limit rollers 14 to move closer together through the linkage component. When the first electric cylinder 9 and the second electric cylinder 11 both retract, the upper limit roller 13 and the lower limit roller 14 are both above the liquid surface, and the upper limit roller 13 and the lower limit roller 14 tension the rolled copper foil 5. At this time, the cleaning assembly is used to clean the slag removal screen 12 and the rolled copper foil 5.

[0019] Specifically, the material conveying assembly further includes a conveying roller 6, a first guide roller 28, a second guide roller 29, a third guide roller 30, and a fourth guide roller 31. Both conveying rollers 6 are rotatably mounted inside the housing 2, and the two conveying rollers 6 clamp and convey the rolled copper foil 5. The conveying rollers 6 are driven to rotate by a drive source. The first guide roller 28, the second guide roller 29, the third guide roller 30, and the fourth guide roller 31 are all rotatably mounted inside the housing 2. Two coarse panel brushes 7 are provided inside the housing 2. The two coarse panel brushes 7 are respectively attached to both sides of the rolled copper foil 5. The rolled copper foil 5 enters from one end of the housing 2, passes through the first guide roller 28, the conveying roller 6, the coarse panel brushes 7, the second guide roller 29, one upper limit roller 13, two lower limit rollers 14, another upper limit roller 13, the third guide roller 30, and the fourth guide roller 31 in sequence, and is discharged from the other end of the housing 2.

[0020] In one embodiment, the driving source can be a servo motor, a servo motor or other components, or other mechanisms capable of rotational motion. This embodiment does not impose specific limitations on these components. It should be noted that the filter assembly 4, copper ion concentration meter 8, first electric cylinder 9 and second electric cylinder 11 described in this invention are all prior art. This invention does not improve them. Therefore, it is not necessary to disclose their specific mechanical and circuit structures, and this does not affect the integrity of this invention.

[0021] The working principle of this invention is as follows: The copper ion concentration meter 8 monitors the composition concentration of the roughening solution in the electroplating roughening tank 1 in real time. When the concentration deviates from the process threshold, the filter assembly 4 is activated to circulate and replenish the roughening solution, reducing the generation of byproducts such as oxide particles from the source. The coordinated drive of the first electric cylinder 9 and the second electric cylinder 11 enables the linkage movement of the lifting frame 10, the slag-removing screen 12, the upper limit roller 13, and the lower limit roller 14, flexibly adjusting the roughening posture and lifting timing of the rolled copper foil 5. When the concentration of the roughening solution is abnormal or impurities need to be removed, the second electric cylinder 11 first contracts to drive the slag-removing screen 12 upward. During the upward movement, the slag-removing screen 12 directly removes floating impurities from the surface of the roughening solution, preventing impurities from adhering to the rolled copper foil 5 during lifting. Simultaneously, the slag-removing screen 12 drives the sliding plate 27 to rise synchronously. The two lower limit rollers 14 are pulled closer together by the linkage component, so that the rolled copper foil 5 is in a relaxed state. Then, the first electric cylinder 9 retracts to drive the lifting frame 10 to rise. The upper limit roller 13 and the lower limit roller 14 rise synchronously with the lifting frame 10. Under the limiting action of the second guide roller 29 and the third guide roller 30, the rise of the upper limit roller 13 automatically tightens the relaxed rolled copper foil 5, realizing the re-tensioning of the rolled copper foil 5, ensuring that the rolled copper foil 5 is always away from the liquid surface and avoids sagging and contamination with impurities. Finally, the cleaning component is activated to clean the impurities on the surface of the slag removal screen 12 and the residual roughening liquid on the surface of the rolled copper foil 5. The re-tensioned rolled copper foil 5 is free of folds and wrinkles, ensuring thorough cleaning. Through this series of linkage actions, the problems of by-product adhesion and residual crystallized salt are completely solved, ensuring the surface quality and peel strength of the rolled copper foil 5 after roughening.

[0022] like Figures 1-8As shown, in a preferred embodiment of the present invention, the sliding plate 27 is located between two lower limit rollers 14. The linkage assembly includes a wheel 22, a square slider 23, and a fixed plate 25. A wheel 22 is rotatably mounted at both ends of each lower limit roller 14. A square slider 23 is fixedly mounted at the end of each wheel 22 away from the lower limit roller 14. A groove 24 is provided on the lifting frame 10. The square slider 23 is slidably mounted in the groove 24. A fixed plate 25 is fixedly mounted on both sides of each sliding plate 27. An inclined groove 26 is provided on the fixed plate 25. The inclined groove 26 is inclined, and the horizontal height of the inclined groove 26 near the sliding plate 27 is less than the horizontal height of the inclined groove 26 away from the sliding plate 27. The wheel 22 is slidably mounted in the inclined groove 26.

[0023] In practical application, when the second electric cylinder 11 retracts and drives the slag-removing screen 12 to rise, the slag-removing screen 12 drives the sliding plate 27 to rise synchronously. The sliding plate 27 drives the fixed plate 25 to rise synchronously. The fixed plate 25 exerts a horizontal force on the wheel 22 through the inclined groove 26, pushing the wheel 22 to rotate around the axis of the lower limit roller 14. At the same time, the wheel 22 drives the square slider 23 to slide along the groove 24, ultimately pulling the two lower limit rollers 14 closer to each other, thus achieving the rolling of copper foil. 5. Relaxation: When the second electric cylinder 11 extends and drives the slag-removing screen 12 to descend, the fixed plate 25 pushes the wheel 22 to rotate in the opposite direction through the inclined groove 26, causing the two lower limit rollers 14 to move away from each other, thereby achieving tensioning of the rolled copper foil 5. This linkage structure does not require an additional drive source. The movement of the lower limit rollers 14 can be synchronously controlled by the lifting and lowering of the slag-removing screen 12. This simplifies the operation process while ensuring the stability of tensioning and relaxing of the rolled copper foil 5, and avoids wrinkles or damage to the rolled copper foil 5 when switching states.

[0024] like Figures 1-5 As shown, in a preferred embodiment of the present invention, the cleaning assembly includes a rotating plate 21, a spray head 15, and a telescopic water pipe 16. Two rotating plates 21 are rotatably mounted on the top of the lifting frame 10. Each rotating plate 21 is driven to rotate by a power component. Multiple spray heads 15 are fixedly installed on each rotating plate 21 at equal intervals. The water inlet end of each spray head 15 is connected to the water outlet end of the telescopic water pipe 16. The water inlet end of the telescopic water pipe 16 is located at the top of the housing 2, and this end of the telescopic water pipe 16 is connected to the water supply assembly. The water outlet end of the spray head 15 faces the slag removal screen plate 12.

[0025] Specifically, a slot 18 is provided on one side of the box body 2, and two symmetrically arranged horizontal plates 20 are fixedly installed on one side of the box body 2. A water intercepting plate 17 is slidably installed between the two horizontal plates 20. The water intercepting plate 17 is slidably connected to the slot 18, and the water intercepting plate 17 is driven to move by an output source set on the horizontal plate 20. When the first electric cylinder 9 and the second electric cylinder 11 are both retracted, the drive assembly drives the water intercepting plate 17 to extend into the box body 2. At this time, the water intercepting plate 17 is located between the electroplating roughening tank 1 and the lifting frame 10.

[0026] Specifically, a recycling tank 19 is fixedly installed on one side of the electroplating roughening tank 1, and both horizontal plates 20 are located in the recycling tank 19. The water intercepting plate 17 is arranged at an angle, and the horizontal height of the end of the water intercepting plate 17 near the recycling tank 19 is lower than the horizontal height of the end of the water intercepting plate 17 away from the recycling tank 19.

[0027] In one embodiment, the power component can be a servo motor, a servo motor, or other mechanisms capable of rotational motion. This embodiment does not impose specific limitations on these components. It should be noted that the water nozzle 15 and water supply assembly described in this invention are existing technologies. This invention does not improve them. Therefore, it is not necessary to disclose their specific mechanical and circuit structures, which does not affect the integrity of this invention.

[0028] In practical application, when it is necessary to receive cleaning wastewater and impurities, the output source extends and pushes the intercepting plate 17 to move along the slide rail of the horizontal plate 20 towards the box 2, so that the intercepting plate 17 passes through the slot 18 and extends into the box 2, and the inclined end of the intercepting plate 17 is located above the opening of the recycling tank 19; during the cleaning process, the rotating plate 21 rotates under the drive of the power component, driving the spray head 15 to rotate synchronously, and the clean water is transported to the spray head 15 through the telescopic water pipe 16 and sprayed out to clean the slag removal screen plate 12 and the rolled copper foil 5. A thorough rinsing process is performed, during which wastewater and impurities fall onto the surface of the intercepting plate 17 and flow naturally into the recycling tank 19 for collection along the inclined surface. After cleaning, the output source retracts and pulls the intercepting plate 17 back to its original position, detaching it from the inside of the tank 2. At this time, the end of the intercepting plate 17 seals the slot 18, ensuring the airtightness of the inside of the tank 2. Through the inclined design and precise docking, the wastewater and impurities are collected without leakage, avoiding contamination of the roughening solution in the electroplating roughening tank 1, ensuring the stability of the roughening solution composition, and reducing the generation of by-products.

[0029] like Figures 1-3 As shown, in a preferred embodiment of the present invention, a clean water tank 3 is provided on one side of the electroplating roughening tank 1. The clean water tank 3 is filled with clean water. The rolled copper foil 5 enters the clean water tank 3 after being discharged from the box 2. A guide component is provided in the clean water tank 3.

[0030] The guiding assembly includes two upper guiding rollers and two lower guiding rollers, with the two lower guiding rollers located in water. The rolled copper foil 5 passes through one upper guiding roller, two lower guiding rollers, and another upper guiding roller in sequence before being discharged from the clean water tank 3.

[0031] In practical application, after the rolled copper foil 5 is discharged from the box 2, it enters the clean water tank 3 and passes around the top of the left upper guide roller, the bottom of the left lower guide roller, the bottom of the right lower guide roller, and the top of the right upper guide roller in sequence. During this process, the rolled copper foil 5 is completely immersed in the clean water of the clean water tank 3 and makes full contact with the clean water, which can thoroughly remove the residual electrolytes and trace impurities on the surface. In one embodiment, after the rolled copper foil 5 has undergone a second water wash, it is discharged from the outlet of the clean water tank 3 and enters the drying area of ​​the drying assembly. The hot air blown out by the hot air dryer can quickly evaporate the moisture on the surface of the rolled copper foil 5, avoiding moisture residue that could cause oxidation or impurities on the surface of the rolled copper foil 5. By extending the water washing path and adding a drying step, the surface quality of the rolled copper foil 5 is further improved, ensuring the bonding strength with other materials in the future and ensuring that the product's peel strength meets the standards.

[0032] Please see Figures 1-8 As shown, the present invention provides a method for roughening the surface of rolled copper foil. The method is applied to a rolled copper foil surface roughening apparatus as described in the above embodiments. The method includes the following steps: Step S1: Fill the electroplating roughening tank 1 with a roughening solution of a preset concentration, and at the same time monitor the concentration of key components such as copper ions in the roughening solution in real time through a copper ion concentration meter 8. Step S2: Ensure that the first electric cylinder 9 and the second electric cylinder 11 are both in the extended state. At this time, the two lower limit rollers 14 are far apart and both are in the roughening liquid. The rolled copper foil 5 is tensioned by the feeding assembly. At this time, the rolled copper foil 5 passes over the top of one upper limit roller 13, the bottom of the two lower limit rollers 14 and the top of the other upper limit roller 13 in sequence. Step S3: The feeding assembly drives the rolled copper foil 5 to move at a set speed at a uniform speed to perform electroplating roughening. If the copper ion concentration meter 8 detects that the concentration of the roughening liquid exceeds the threshold, the second electric cylinder 11 is first activated to retract, which drives the slag removal screen 12 and the sliding plate 27 to rise. The slag removal screen 12 removes impurities from the liquid surface. At the same time, the sliding plate 27 drives the two lower limit rollers 14 to approach through the linkage assembly, so that the rolled copper foil 5 is relaxed. Step S4: Start the first electric cylinder 9 to retract, driving the lifting frame 10 to rise. The upper limit roller 13 and the lower limit roller 14 rise synchronously. The two lower limit rollers 14 cooperate to re-tension the rolled copper foil 5 and lift it away from the roughening liquid. Start the cleaning component to clean the impurities on the slag removal screen 12 and the roughening liquid remaining on the surface of the rolled copper foil 5 respectively. Step S5: Start the filter assembly 4 to filter the coarsening liquid and replenish the raw materials until the concentration monitored by the copper ion concentration meter 8 returns to normal; start the first electric cylinder 9 and the second electric cylinder 11 in reverse to lower the lifting frame 10, reset the slag removal screen 12, and move the two lower limit rollers 14 away, so that the rolled copper foil 5 is re-immersed in the coarsening liquid; restart the material conveying assembly to restore the uniform speed movement and coarsening operation of the rolled copper foil 5.

[0033] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A device for roughening the surface of rolled copper foil, characterized in that, include: An electroplating roughening tank (1) is filled with a roughening liquid. A box (2) is fixedly installed on the top of the electroplating roughening tank (1). A copper ion concentration meter (8) is fixedly installed on the inner wall of the box (2). The detection head of the copper ion concentration meter (8) is located in the roughening liquid. One side of the electroplating roughening tank (1) is connected to the inlet of the filter assembly (4). The outlet of the filter assembly (4) is connected to the box (2). The material conveying assembly is located inside the housing (2). The material conveying assembly includes two upper limit rollers (13) and two lower limit rollers (14). The material conveying assembly is used to convey rolled copper foil (5). The rolled copper foil (5) passes over the top of one upper limit roller (13), the bottom of the two lower limit rollers (14), and the top of another upper limit roller (13) in sequence. The first electric cylinder (9) is fixedly installed on the top of the box (2). The movable end of the first electric cylinder (9) is fixedly installed with a lifting frame (10). The lifting frame (10) is slidably installed inside the box (2). The lifting frame (10) is driven by the first electric cylinder (9) to lift. Two symmetrically arranged upper limit rollers (13) are rotatably installed on the lifting frame (10). Two symmetrically arranged lower limit rollers (14) are slidably installed on the lifting frame (10). The two lower limit rollers (14) are located below the two upper limit rollers (13) and between the two upper limit rollers (13). The slag removal screen (12) is located above two lower limit rollers (14). Two symmetrically arranged sliding plates (27) are fixedly installed at the bottom of the slag removal screen (12). The sliding plates (27) are slidably connected to the lifting frame (10). A second electric cylinder (11) is fixedly installed on the top plate of the lifting frame (10). The movable end of the second electric cylinder (11) is fixedly connected to the top of the slag removal screen (12). The slag removal screen (12) is driven to rise and fall by the second electric cylinder (11). A linkage component is provided on the sliding plate (27). The linkage component is connected to the two lower limit rollers (14). When the slag removal screen (12) rises, the slag removal screen (12) drives the sliding plate (27) to rise synchronously. The sliding plate (27) drives the two lower limit rollers (14) to move closer through the linkage component. When the first electric cylinder (9) and the second electric cylinder (11) are both retracted, the upper limit roller (13) and the lower limit roller (14) are both above the liquid surface, and the upper limit roller (13) and the lower limit roller (14) will tension the rolled copper foil (5). At this time, the cleaning assembly is used to clean the slag removal screen (12) and the rolled copper foil (5).

2. The apparatus for roughening the surface of rolled copper foil according to claim 1, characterized in that, The material conveying assembly also includes a conveying roller (6), a first guide roller (28), a second guide roller (29), a third guide roller (30), and a fourth guide roller (31). Both conveying rollers (6) are rotatably mounted inside the housing (2), and the two conveying rollers (6) clamp and convey the rolled copper foil (5). The conveying rollers (6) are driven to rotate by a drive source. The first guide roller (28), the second guide roller (29), the third guide roller (30), and the fourth guide roller (31) are all rotatably mounted inside the housing (2). Inside the box (2), two coarse panel brushes (7) are installed. The two coarse panel brushes (7) are respectively attached to both sides of the rolled copper foil (5). The rolled copper foil (5) enters from one end of the box (2), passes through the first guide roller (28), the conveying roller (6), the coarse panel brush (7), the second guide roller (29), one upper limit roller (13), two lower limit rollers (14), another upper limit roller (13), the third guide roller (30) and the fourth guide roller (31) in sequence, and is discharged from the other end of the box (2).

3. The apparatus for roughening the surface of rolled copper foil according to claim 1, characterized in that, The sliding plate (27) is located between two lower limit rollers (14). The linkage assembly includes a wheel (22), a square slider (23), and a fixed plate (25). A wheel (22) is rotatably installed at both ends of each lower limit roller (14). A square slider (23) is fixedly installed at the end of each wheel (22) away from the lower limit roller (14). A groove (24) is provided on the lifting frame (10). The square slider (23) is slidably installed in the groove (24). A fixed plate (25) is fixedly installed on both sides of each sliding plate (27). An inclined groove (26) is provided on the fixed plate (25). The inclined groove (26) is inclined, and the horizontal height of the inclined groove (26) near the sliding plate (27) is less than the horizontal height of the inclined groove (26) away from the sliding plate (27). The wheel (22) is slidably installed in the inclined groove (26).

4. The apparatus for roughening the surface of rolled copper foil according to claim 1, characterized in that, The cleaning assembly includes a rotating plate (21), a spray nozzle (15), and a telescopic water pipe (16). Two rotating plates (21) are rotatably installed on the top of the lifting frame (10). Each rotating plate (21) is driven to rotate by a power component. Multiple spray nozzles (15) are fixedly installed on each rotating plate (21) at equal intervals. The water inlet end of each spray nozzle (15) is connected to the water outlet end of the telescopic water pipe (16). The water inlet end of the telescopic water pipe (16) is located at the top of the box (2), and this end of the telescopic water pipe (16) is connected to the water supply assembly. The water outlet end of the spray nozzle (15) faces the slag removal screen plate (12).

5. The apparatus for roughening the surface of rolled copper foil according to claim 4, characterized in that, A slot (18) is provided on one side of the box body (2). Two symmetrically arranged horizontal plates (20) are fixedly installed on one side of the box body (2). A water-cutting plate (17) is slidably installed between the two horizontal plates (20). The water-cutting plate (17) is slidably connected to the slot (18). The water-cutting plate (17) is driven to move by the output source set on the horizontal plate (20). When the first electric cylinder (9) and the second electric cylinder (11) are both retracted, the driving component drives the water-cutting plate (17) to extend into the box body (2). At this time, the water-cutting plate (17) is located between the electroplating roughening tank (1) and the lifting frame (10).

6. The apparatus for roughening the surface of rolled copper foil according to claim 5, characterized in that, A recycling tank (19) is fixedly installed on one side of the electroplating roughening tank (1). Both of the horizontal plates (20) are located in the recycling tank (19). The water intercepting plate (17) is arranged at an angle, and the horizontal height of the end of the water intercepting plate (17) near the recycling tank (19) is lower than the horizontal height of the end of the water intercepting plate (17) away from the recycling tank (19).

7. The apparatus for roughening the surface of rolled copper foil according to claim 1, characterized in that, A water purification tank (3) is provided on one side of the electroplating roughening tank (1). The water purification tank (3) is filled with purified water. The rolled copper foil (5) is discharged from the box (2) and enters the water purification tank (3). A guide component is provided in the water purification tank (3).

8. A method for roughening the surface of rolled copper foil, characterized in that, The method is applied to a surface roughening treatment apparatus for rolled copper foil as described in any one of claims 1-7, and the method includes the following steps: Step S1: Fill the electroplating roughening tank (1) with a roughening solution of a preset concentration, and at the same time monitor the concentration of key components such as copper ions in the roughening solution in real time through a copper ion concentration meter (8); Step S2: Ensure that the first electric cylinder (9) and the second electric cylinder (11) are both in the extended state. At this time, the two lower limit rollers (14) are far apart and both are in the roughening liquid. The rolled copper foil (5) is tensioned by the feeding assembly. At this time, the rolled copper foil (5) passes over the top of one upper limit roller (13), the bottom of the two lower limit rollers (14) and the top of the other upper limit roller (13) in sequence. Step S3: The feeding assembly drives the rolled copper foil (5) to move at a set speed to perform electroplating roughening. If the copper ion concentration meter (8) detects that the concentration of the roughening liquid exceeds the threshold, the second electric cylinder (11) is activated to retract, which drives the slag removal screen (12) and the sliding plate (27) to rise. The slag removal screen (12) removes impurities from the liquid surface. At the same time, the sliding plate (27) drives the two lower limit rollers (14) to approach through the linkage assembly, so that the rolled copper foil (5) is relaxed. Step S4: Start the first electric cylinder (9) to retract, drive the lifting frame (10) to rise, the upper limit roller (13) and the lower limit roller (14) rise synchronously, the two lower limit rollers (14) cooperate to re-tension the rolled copper foil (5) and lift it away from the roughening liquid, start the cleaning assembly to clean the impurities on the slag removal screen (12) and the roughening liquid remaining on the surface of the rolled copper foil (5); Step S5: Start the filter assembly (4) to filter the coarsening liquid and replenish the raw materials until the concentration monitored by the copper ion concentration meter (8) returns to normal; start the first electric cylinder (9) and the second electric cylinder (11) in reverse to lower the lifting frame (10), reset the slag removal screen (12), move the two lower limit rollers (14) away, and re-immerse the rolled copper foil (5) in the coarsening liquid; restart the feeding assembly to restore the uniform speed of the rolled copper foil (5) and the coarsening operation.

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