Electrolyte replacing device for electrolytic copper foil

Abstract

The invention discloses an electrolyte replacement device for electrolytic copper foils, and relates to the technical field of electrolytic copper foils, the electrolyte replacement device comprises an electrolytic tank, electrolyte is contained in the electrolytic tank, the bottom of the electrolytic tank is symmetrically fixed and communicated with liquid discharge pipes, one side of the electrolytic tank is provided with a liquid outlet pipe, one end, away from the electrolytic tank, of the liquid outlet pipe is communicated with a mixing tank, and the liquid outlet pipe is obliquely arranged; the lower end of the liquid outlet pipe communicates with the electrolysis tank, a stirring mechanism is installed in the mixing tank and used for evenly mixing the electrolyte and the additive, a scraper is slidably connected to the inner wall of the electrolysis tank, and the scraper is in transmission connection with a driving mechanism. The stirring mechanism can uniformly mix an electrolyte and an additive, and the scraping plate can clean the inner wall of the electrolytic tank under the driving of the driving mechanism, so that the internal cleanness of the electrolytic tank is guaranteed, and the influence of impurity residues on the subsequent electrolytic copper foil quality is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of electrolytic copper foil, and in particular to an electrolyte replacement device for electrolytic copper foil. Background Art

[0002] Electrolytic copper foil is made from high-purity copper, which is dissolved into a copper sulfate electrolyte. Under the action of direct current, this is electrochemically deposited onto the surface of a rotating cathode roller to form a continuous metal foil. Its smooth surface and matte surface have a rough texture. Electrolytic copper foil typically requires an electrolyte. Over time, the sulfuric acid concentration in the electrolyte may decrease, reducing the copper ion concentration and directly affecting the conductivity and thickness uniformity of the foil. Impurities such as zinc and iron in the crude copper may also enter the solution, necessitating regular electrolyte replacement.

[0003] The existing electrolyte replacement device needs to manually clean the impurities after the residual electrolyte is discharged, which is time-consuming and labor-intensive. In addition, additives are directly added when replacing the electrolyte, resulting in an uneven solution, which affects the use effect.

[0004] Therefore, there is an urgent need for an electrolyte replacement device for electrolytic copper foil to solve the problems existing in the above-mentioned prior art. Summary of the Invention

[0005] The purpose of the present invention is to provide an electrolyte replacement device for electrolytic copper foil to solve the problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides an electrolyte replacement device for electrolytic copper foil, comprising an electrolytic box, wherein the electrolytic box contains electrolyte, the bottom of the electrolytic box is symmetrically fixed and connected to a drain pipe, a liquid outlet pipe is provided on one side of the electrolytic box, and the end of the liquid outlet pipe away from the electrolytic box is connected to a mixing box, the liquid outlet pipe is arranged at an angle, and the lower end of the liquid outlet pipe is connected to the electrolytic box, a stirring mechanism is installed in the mixing box, the stirring mechanism is used to mix the electrolyte and additives evenly, a scraper is slidably connected to the inner wall of the electrolytic box, and the scraper is transmission-connected to a driving mechanism.

[0007] Optionally, the driving mechanism includes a driving shaft rotatably connected to the electrolytic box, a driven shaft rotatably connected to a side of the electrolytic box away from the driving shaft, the side walls of the driving shaft and the driven shaft are fixedly connected to connecting rods, the scraper is located between the two connecting rods and is detachably connected to the connecting rods, and the driving shaft is transmission-connected to a drive assembly.

[0008] Optionally, the driving assembly includes a first motor, the output shaft of the first motor is fixedly connected to a driving wheel, the driving wheel is connected to a driven wheel via a belt transmission, and the driven wheel is fixedly connected to the driving shaft.

[0009] Optionally, a support plate is symmetrically and fixedly connected to the bottom surface of the electrolysis box, and the first motor is fixedly connected to the side wall of the support plate.

[0010] Optionally, ear plates are symmetrically and fixedly connected to the top surface of the electrolytic box, and the driving shaft and the driven shaft respectively pass through the ear plates and are rotatably connected to the ear plates.

[0011] Optionally, the stirring mechanism includes a stirring shaft, the side walls of the stirring shaft are symmetrically fixedly connected with cross bars, the ends of the cross bars are symmetrically fixedly connected with oblique bars, the oblique bars are fixedly connected to the stirring shaft, the oblique bars are fixedly connected with vertical bars, the vertical bars are rotatably connected with ring sleeves, the side walls of the ring sleeves are symmetrically fixedly connected with stirring rods, the stirring shaft is transmission-connected with a drive assembly, and the drive assembly is fixedly connected to the inner wall of the mixing box.

[0012] Optionally, the drive assembly includes a second motor fixedly connected to the top surface of the mixing box, the output shaft of the second motor is fixedly connected to the first gear, the first gear is engaged with the second gear, the second gear is fixedly connected to the stirring shaft, a partition is fixedly connected inside the mixing box, the first gear and the second gear are in contact with the top surface of the partition, and the stirring shaft passes through the partition and is rotatably connected to the partition.

[0013] Optionally, a sliding groove is provided at both ends of the scraper, one end of the spring is fixedly connected to the inner wall of the sliding groove, the other end of the spring is fixedly connected to the insertion rod, the insertion rod is slidably connected to the sliding groove, a limiting hole is provided on the connecting rod, and the insertion rod is adapted to the limiting hole.

[0014] Optionally, legs are fixedly connected to the four corners of the bottom surface of the mixing box.

[0015] Optionally, a supporting plate is fixedly connected to the liquid outlet pipe, and the supporting plate is fixedly connected to the side wall of the electrolytic box.

[0016] The present invention discloses the following technical effects: an electrolytic box contains electrolyte, and the copper foil electrolysis process can be carried out in the box. A drain pipe is used to discharge the electrolyte in the box, facilitating replacement of new electrolyte. A liquid outlet pipe connects the box to a mixing box, and the inclined arrangement of the liquid outlet pipe facilitates the outflow of the electrolyte. A stirring mechanism can evenly mix the electrolyte and additives. A scraper driven by a driving mechanism can clean the inner wall of the box, ensuring the cleanliness of the box and preventing impurities from affecting the quality of the subsequent electrolytic copper foil. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 For the present invention Figure 1 A partial enlarged view of middle A;

[0020] Figure 3 This is a front view of the electrolytic box of the present invention;

[0021] Figure 4 Schematic diagram of the internal structure of the mixing box of the present invention;

[0022] Figure 5 It is an assembly diagram of the connecting rod and the scraper of the present invention;

[0023] In the figure: 1. electrolytic box; 2. support plate; 3. support leg; 4. mixing box; 5. liquid outlet pipe; 6. bearing plate; 7. driven shaft; 8. connecting rod; 9. scraper; 10. first motor; 11. driving wheel; 12. belt; 13. driven wheel; 14. driving shaft; 15. ear plate; 16. discharge pipe; 17. second motor; 18. first gear; 19. second gear; 20. stirring shaft; 21. inclined rod; 22. horizontal rod; 23. vertical rod; 24. ring sleeve; 25. stirring rod; 26. partition; 27. limit hole; 28. plug rod; 29. ​​slide; 30. spring. DETAILED DESCRIPTION

[0024] Electrolytic copper foil, a core material in the electronics and information industry, plays an irreplaceable role in integrated circuits, printed circuit boards (PCBs), lithium-ion batteries, and other fields. As electronic products evolve toward thinner, lighter, and higher-performance designs, the production process for electrolytic copper foil places higher demands on electrolyte purity, replacement efficiency, and environmental friendliness. The electrolyte replacement system is crucial for ensuring the continuity and stability of electrolytic copper foil production, and its technological development directly impacts foil quality and production efficiency. Electrolytic copper foil production process requirements: Electrolytic copper foil is produced through electrolytic deposition, with the core process comprising copper dissolution, electrolytic deposition, and surface treatment. As a carrier for copper ion transport, the electrolyte must meet the following requirements: High purity: Impurities such as iron ions must be kept below the ppm level to avoid affecting the copper foil's conductivity and corrosion resistance; Stability: The composition must be uniform to avoid uneven thickness or surface defects caused by concentration fluctuations; Recyclability: It must support recycling to reduce production costs and possess efficient purification capabilities. Technical Challenges of Electrolyte Replacement: Traditional electrolyte replacement methods present the following challenges: Complex operation: The electrolytic cell requires downtime and disassembly, resulting in production interruptions; Contamination risk: Manual operation can easily introduce impurities, affecting electrolyte purity; Inefficiency: Long replacement cycles make it difficult to meet the demands of large-scale production; Resource waste: Underutilized electrolyte is discarded, increasing production costs. Market Demand and Technological Development Directions: With the rapid development of 5G communications, new energy vehicles, and energy storage, market demand for high-end electrolytic copper foil is surging. Technological development should focus on the following areas: Automation and intelligence: Enable unmanned electrolyte replacement, reducing human intervention; Environmental protection and energy conservation: Reduce electrolyte consumption and wastewater discharge; High-precision control: Real-time monitoring and adjustment of liquid level and concentration through sensors and control systems.

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Reference Figure 1-Figure 5As shown, this embodiment provides an electrolyte replacement device for electrolytic copper foil, including an electrolytic box 1, in which electrolyte is contained. The bottom of the electrolytic box 1 is symmetrically fixed and connected to a drain pipe 16, and a liquid outlet pipe 5 is provided on one side of the electrolytic box 1. The end of the liquid outlet pipe 5 away from the electrolytic box 1 is connected to a mixing box 4, the liquid outlet pipe 5 is inclined, and the lower end of the liquid outlet pipe 5 is connected to the electrolytic box 1. A stirring mechanism is installed in the mixing box 4, and the stirring mechanism is used to mix the electrolyte and additives evenly. A scraper 9 is slidably connected to the inner wall of the electrolytic box 1, and the scraper 9 is transmission-connected to a driving mechanism.

[0028] In the present invention, the electrolytic tank 1 contains electrolyte, and the copper foil electrolysis process can be carried out in the electrolytic tank 1. The drain pipe 16 is used to discharge the electrolyte in the electrolytic tank 1, facilitating the replacement of new electrolyte. The outlet pipe 5 connects the electrolytic tank 1 with the mixing tank 4. The inclined position of the outlet pipe 5 facilitates the outflow of the electrolyte. The stirring mechanism can evenly mix the electrolyte and additives. The scraper 9, driven by the driving mechanism, cleans the inner wall of the electrolytic tank 1, ensuring the cleanliness of the electrolytic tank 1 and preventing impurities from affecting the quality of the subsequent electrolytic copper foil.

[0029] Further refining the scheme, the drive mechanism includes a driving shaft 14 rotatably connected to the electrolytic tank 1. The side of the electrolytic tank 1 away from the driving shaft 14 is rotatably connected to the driven shaft 7. The side walls of the driving shaft 14 and the driven shaft 7 are fixedly connected to the connecting rods 8. The scraper 9 is located between the two connecting rods 8 and is detachably connected to the connecting rods 8. The driving shaft 14 is in transmission connection with the drive assembly. The driving shaft 14 and the driven shaft 7 are respectively rotatably connected to the two sides of the electrolytic tank 1. The scraper 9 is located between the two connecting rods 8 and is detachably connected. The driving shaft 14 is driven by the drive assembly to rotate, thereby driving the connecting rods 8 and scraper 9 to clean the inner wall of the electrolytic tank 1. This structure is simple and reliable, and the detachable connection method facilitates the installation, removal, and replacement of the scraper 9, and is easy to maintain and service.

[0030] Further detailing the solution, the drive assembly includes a first motor 10, the output shaft of which is fixedly connected to a driving pulley 11, which is connected to a driven pulley 13 via a belt 12, and the driven pulley 13 is fixedly connected to a driving shaft 14. The belt 12 transmission method is low-cost and stable, and can reliably transmit the power of the first motor 10 to the driving shaft 14 to drive the scraper 9, ensuring that the scraper 9 can properly clean the inner wall of the electrolytic box 1.

[0031] To further refine the solution, a support plate 2 is symmetrically fixedly connected to the bottom surface of the electrolytic box 1, and the first motor 10 is fixedly connected to the side wall of the support plate 2. This installation method is stable and reliable, ensuring the stability of the first motor 10 during operation, reducing vibration and noise, and facilitating the installation and removal of the first motor 10, making it easier to maintain and repair the motor.

[0032] Further detailing the solution, lugs 15 are symmetrically fixedly connected to the top surface of the electrolytic tank 1. The driving shaft 14 and the driven shaft 7 respectively pass through the lugs 15 and are rotationally connected to the lugs 15. The arrangement of the lugs 15 provides stable support for the driving shaft 14 and the driven shaft 7, ensuring their smooth rotation, improving the stability and reliability of the entire drive mechanism, and ensuring the normal operation of the scraper 9.

[0033] Further refining the scheme, the stirring mechanism includes a stirring shaft 20, the side wall of the stirring shaft 20 is symmetrically fixedly connected to a crossbar 22, the end of the crossbar 22 is symmetrically fixedly connected to an inclined rod 21, the inclined rod 21 is fixedly connected to the stirring shaft 20, the inclined rod 21 is fixedly connected to the vertical rod 23, the vertical rod 23 is rotatably connected to the ring sleeve 24, the side wall of the ring sleeve 24 is symmetrically fixedly connected to the stirring rod 25, the stirring shaft 20 is connected to a drive assembly, and the drive assembly is fixedly connected to the inner wall of the mixing box 4. This multi-level stirring structure can fully stir the electrolyte and additives, making them more evenly mixed, improving the mixing effect, and facilitating the stability of the electrolyte performance in the subsequent electrolytic copper foil process. At the same time, the stirring shaft 20 is connected to a drive assembly to provide power for the stirring mechanism.

[0034] Further refining the scheme, the drive assembly includes a second motor 17 fixedly connected to the top surface of the mixing box 4. The output shaft of the second motor 17 is fixedly connected to a first gear 18, which is meshed with a second gear 19. The second gear 19 is fixedly connected to a stirring shaft 20. A partition 26 is fixedly connected to the mixing box 4. The first gear 18 and the second gear 19 are in contact with the top surface of the partition 26. The stirring shaft 20 passes through the partition 26 and is rotatably connected to the partition 26. The partition 26 fixedly connected to the mixing box 4 separates the gear transmission part from the stirring part, preventing the electrolyte from entering the gear transmission area and affecting the transmission, and at the same time serves as a support for the gear. The stirring shaft 20 passes through the partition 26 and is rotatably connected to the partition 26, ensuring the stable rotation of the stirring shaft 20. This structure is compact and has high transmission efficiency, and can reliably drive the stirring mechanism to work.

[0035] Further detailing the solution, each end of the scraper 9 has a slot 29. One end of a spring 30 is fixedly connected to the inner wall of the slot 29. A rod 28 is fixedly connected to the other end of the spring 30. The rod 28 is slidably connected to the slot 29. A limit hole 27 is provided on the connecting rod 8, and the rod 28 fits into the limit hole 27. By pressing the rod 28, the spring 30 is compressed, and the rod 28 retracts into the slot 29, allowing the scraper 9 to be removed from the connecting rod 8. During installation, the scraper 9 is placed between the two connecting rods 8. The rod 28, under the action of the spring 30, pops out and inserts into the limit hole 27, completing the installation of the scraper 9. This simple and easy-to-operate structure facilitates the installation and removal of the scraper 9, as well as its cleaning and replacement.

[0036] Further detailing the solution, the four corners of the bottom surface of the mixing box 4 are fixedly connected to the legs 3. The legs 3 provide stable support for the mixing box 4, allowing the mixing box 4 to be placed stably. At the same time, the bottom of the mixing box 4 maintains a certain distance from the ground or other supporting surface, facilitating the installation and maintenance of the mixing box 4 and the connection and operation of the bottom pipes.

[0037] Further detailing the solution, a supporting plate 6 is fixedly connected to the liquid outlet pipe 5, and the supporting plate 6 is fixedly connected to the side wall of the electrolytic box 1. The supporting plate 6 supports and fixes the liquid outlet pipe 5, preventing the liquid outlet pipe 5 from shaking or shifting during use, ensuring the stability and sealing of the connection between the liquid outlet pipe 5 and the electrolytic box 1, and ensuring that the electrolyte can flow smoothly from the mixing box 4 into the electrolytic box 1.

[0038] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. An electrolyte replacement device for electrolytic copper foil, characterized in that: The invention comprises an electrolytic box (1), wherein the electrolytic box (1) contains electrolyte, the bottom of the electrolytic box (1) is symmetrically fixed and connected to a drain pipe (16), a liquid outlet pipe (5) is provided on one side of the electrolytic box (1), the end of the liquid outlet pipe (5) away from the electrolytic box (1) is connected to a mixing box (4), the liquid outlet pipe (5) is arranged obliquely, the lower end of the liquid outlet pipe (5) is connected to the electrolytic box (1), a stirring mechanism is installed in the mixing box (4), the stirring mechanism is used to mix the electrolyte and additives uniformly, the inner wall of the electrolytic box (1) is slidably connected to a scraper (9), and the scraper (9) is transmission-connected to a driving mechanism.

2. The electrolyte replacement device for electrolytic copper foil according to claim 1, characterized in that: The driving mechanism comprises a driving shaft (14) rotatably connected to the electrolytic box (1); a driven shaft (7) is rotatably connected to a side of the electrolytic box (1) away from the driving shaft (14); side walls of the driving shaft (14) and the driven shaft (7) are both fixedly connected to connecting rods (8); the scraper (9) is located between the two connecting rods (8) and is detachably connected to the connecting rods (8); and the driving shaft (14) is transmission-connected to a driving assembly.

3. The electrolyte replacement device for electrolytic copper foil according to claim 2, characterized in that: The driving assembly comprises a first motor (10), the output shaft of the first motor (10) is fixedly connected to a driving wheel (11), the driving wheel (11) is connected to a driven wheel (13) via a belt (12), and the driven wheel (13) is fixedly connected to the driving shaft (14).

4. The electrolyte replacement device for electrolytic copper foil according to claim 3, characterized in that: A support plate (2) is symmetrically and fixedly connected to the bottom surface of the electrolytic box (1), and the first motor (10) is fixedly connected to the side wall of the support plate (2).

5. The electrolyte replacement device for electrolytic copper foil according to claim 2, characterized in that: The top surface of the electrolytic box (1) is symmetrically fixedly connected with an ear plate (15), and the driving shaft (14) and the driven shaft (7) respectively pass through the ear plate (15) and are rotationally connected to the ear plate (15).

6. The electrolyte replacement device for electrolytic copper foil according to claim 1, characterized in that: The stirring mechanism comprises a stirring shaft (20), a side wall of the stirring shaft (20) is symmetrically fixedly connected with a cross bar (22), an end of the cross bar (22) is symmetrically fixedly connected with an inclined rod (21), the inclined rod (21) is fixedly connected to the stirring shaft (20), a vertical rod (23) is fixedly connected to the inclined rod (21), a ring sleeve (24) is rotatably connected to the vertical rod (23), a side wall of the ring sleeve (24) is symmetrically fixedly connected with a stirring rod (25), the stirring shaft (20) is transmission-connected with a drive assembly, and the drive assembly is fixedly connected to the inner wall of the mixing box (4).

7. The electrolyte replacement device for electrolytic copper foil according to claim 6, characterized in that: The driving assembly comprises a second motor (17) fixedly connected to the top surface of the mixing box (4), the output shaft of the second motor (17) is fixedly connected to a first gear (18), the first gear (18) is meshed with a second gear (19), the second gear (19) is fixedly connected to the stirring shaft (20), a partition (26) is fixedly connected to the mixing box (4), the first gear (18) and the second gear (19) are in contact with the top surface of the partition (26), and the stirring shaft (20) passes through the partition (26) and is rotatably connected to the partition (26).

8. The electrolyte replacement device for electrolytic copper foil according to claim 2, characterized in that: The scraper (9) is provided with a sliding groove (29) at both ends, one end of a spring (30) is fixedly connected to the inner wall of the sliding groove (29), and the other end of the spring (30) is fixedly connected to an insertion rod (28), the insertion rod (28) is slidably connected to the sliding groove (29), and a limiting hole (27) is provided on the connecting rod (8), and the insertion rod (28) is adapted to the limiting hole (27).

9. The electrolyte replacement device for electrolytic copper foil according to claim 1, characterized in that: Support legs (3) are fixedly connected to the four corners of the bottom surface of the mixing box (4).

10. The electrolyte replacement device for electrolytic copper foil according to claim 2, characterized in that: A carrying plate (6) is fixedly connected to the liquid outlet pipe (5), and the carrying plate (6) is fixedly connected to the side wall of the electrolytic box (1).

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