Reinforced conductive structure for winding double-layer copper wires at two ends of cathode roller
By winding a double-layer copper wire structure at both ends of the cathode roller, the gap problem caused by the deformation of the conductive structure was solved, achieving stable conductivity and uniform current distribution of the cathode roller, thus improving the quality of copper foil and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-23
- Publication Date
- 2026-03-31
AI Technical Summary
The conductive structure of the existing cathode roller is prone to deformation and gaps after welding and fixing, which affects the conductivity and leads to a decrease in copper foil quality and production efficiency.
A double-layer copper wire structure is wound at both ends of the cathode roller, including an inner copper wire layer and an outer copper wire layer. The inner copper wire layer is connected by opening annular grooves at both ends of the outer cylinder, while the outer copper wire layer is attached to the outer surface of the outer cylinder. The copper wire layers are electrically connected to each other to enhance conductivity.
It significantly improves the conductivity and structural stability of the cathode roller, ensures uniform current distribution, avoids localized heating, and improves copper foil quality and production efficiency.
Smart Images
Figure CN224062925U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of copper foil production equipment, specifically relating to a cathode roller with double-layer copper wires wound around both ends to enhance conductivity. Background Technology
[0002] The cathode roller is a key piece of equipment in the production of electrolytic copper foil, and its conductivity directly affects the quality and production efficiency of the copper foil. The working principle of the foil-making machine is to use electrolysis technology to precipitate copper ions from the copper sulfate solution in the anode tank and attach them to the surface of the cathode roller, thereby generating copper foil. Maintaining a stable current density during operation ensures the production of uniform, aesthetically pleasing copper foil with a certain thickness. As the size of the cathode roller increases, maintaining a uniform current distribution and sufficient conductive area becomes a technical challenge. Therefore, providing corresponding conductivity analysis and design theories based on user needs, and designing appropriate conductive structures, becomes crucial for cathode roller design.
[0003] The current conductive structure design of the cathode roller involves a steel cylinder covered with a copper layer. The large copper side plate is fixed to the steel side plate with screws. There is a groove on the inner side of the large copper side plate and a groove on the outer side of the steel side plate. The small copper plate matches the groove and is clamped in the middle for conductive connection. This design not only increases the conductive area but also significantly improves the rigidity of both ends of the steel cylinder. The two ends of the steel core shaft are wrapped with copper sleeves by heat fitting, and the inner side is welded and fixed to the large and small copper plates for conductive connection. Copper wires are set on the arc-shaped outer surface of the steel cylinder. The copper wires are evenly and tightly wound on the surface of the steel cylinder. The titanium cylinder is heat-fitted onto the copper wires. This design ensures sufficient and stable conductivity on the roller surface and improves the quality of the processed copper foil.
[0004] However, since the copper wire is wound around the surface of the steel cylinder and the two ends are welded and fixed, deformation will occur and gaps will be generated, which will affect the conductivity. Therefore, there is an urgent need to provide a new reinforced conductive structure to effectively improve the conductivity of the cathode roller. Summary of the Invention
[0005] To address the problems existing in the prior art, this utility model provides a conductive structure with double-layer copper wire wound around both ends of the cathode roller. This conductive structure can significantly improve conductivity and effectively enhance structural stability by winding double-layer copper wire around both ends of the cathode roller, which can effectively ensure the quality of copper foil and help improve production efficiency.
[0006] To achieve the above objectives, this utility model provides a cathode roller with a double-layer copper wire reinforced conductive structure at both ends, including a cathode roller core, a roller, an inner copper wire layer, and an outer copper wire layer.
[0007] The roller is fitted onto the outside of the cathode roller core; the roller includes an outer cylinder, an inner side plate and an outer side plate, and two annular grooves are opened on the outer sides of both ends of the outer cylinder in the width direction; the inner side plate is fixedly encapsulated on the inner side of the end of the outer cylinder, and the outer side plate is fitted on the outer side of the inner side plate and fixedly connected to the end of the outer cylinder, while its outer circular surface extends to the outer side of the outer circular surface of the outer cylinder.
[0008] The inner copper wire layer is bonded to the annular groove, and its ends are electrically connected to the outer plate.
[0009] The outer copper wire layer is attached to the outer circular surface of the outer cylinder, and its end is electrically connected to both the inner copper wire layer and the outer plate.
[0010] The outer surface of the inner copper wire layer is flush with the outer circular surface of the outer cylinder, and the outer copper wire layer is flush with the outer circular surface of the outer plate.
[0011] The inner copper wire layer is composed of copper wire one continuously wound in the annular groove; the outer copper wire layer is composed of copper wire two continuously wound on the outer surface of the outer cylinder, and the winding direction of copper wire two is opposite to that of copper wire one.
[0012] As a preferred embodiment, the outer cylinder is a steel cylinder.
[0013] As a preferred embodiment, the inner side plate is a steel side plate.
[0014] As a preferred embodiment, the outer side plate is a large copper side plate.
[0015] In this invention, two annular grooves are respectively opened at both ends of the axial width of the outer cylinder, and the inner copper wire layer is connected in close fit within the annular grooves, while the outer copper wire layer is connected in close fit to the outer surface of the outer cylinder. This significantly enhances the conductivity of the cathode roller, especially for cathode rollers with large diameters. Because cathode rollers with large diameters are large in volume, they require more current and have higher requirements for the conductive system. When there is a connection problem between the copper sleeves at both ends of the cathode roller and the steel core shaft, the other conductive devices can provide secondary compensation current to ensure stable and uniform conductivity on the cathode roller surface. This avoids problems such as localized heating of the roller surface, heating of the shaft end, and mottling of the copper foil caused by insufficient conductivity. Therefore, by setting a double copper wire layer, the uniform distribution of current can be effectively ensured, which in turn helps to improve the quality of the copper foil.
[0016] This conductive structure significantly improves conductivity by winding double layers of copper wire at both ends of the cathode roller, effectively enhancing structural stability, ensuring copper foil quality, and contributing to increased production efficiency. Attached Figure Description
[0017] Figure 1This is a schematic diagram of the cross-sectional structure of this utility model;
[0018] Figure 2 yes Figure 1 A magnified view of part A in the middle.
[0019] In the diagram: 1. Cathode roller core, 2. Roller, 3. Annular groove, 4. Outer cylinder, 5. Inner side plate, 6. Outer side plate, 7. Inner copper wire layer, 8. Outer copper wire layer. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings.
[0021] like Figure 1 and Figure 2 As shown, the present invention provides a cathode roller with a double-layer copper wire reinforced conductive structure at both ends, including a cathode roller core 1, a roller 2, an inner copper wire layer 7 and an outer copper wire layer 8;
[0022] The roller 2 is fitted onto the outside of the cathode roller core 1; the roller 2 includes an outer cylinder 4, an inner side plate 5, and an outer side plate 6. Two annular grooves 3 are formed on the outer sides of both ends of the outer cylinder 4 in the width direction. Preferably, the width of the annular grooves 3 along the axial direction is 100 mm, and the depth along the radial direction is 4 mm. The inner side plate 5 is fixedly encapsulated on the inner side of the end of the outer cylinder 4, and the outer side plate 6 is fitted on the outer side of the inner side plate 5 and fixedly connected to the end of the outer cylinder 4. At the same time, its outer circular surface extends to the outer side of the outer circular surface of the outer cylinder 4.
[0023] The inner copper wire layer 7 is attached to the annular groove 3, and its end is electrically connected to the outer plate 6.
[0024] The outer copper wire layer 8 is attached to the outer circular surface of the outer cylinder 4, and its end is electrically connected to both the inner copper wire layer 7 and the outer plate 6.
[0025] The outer surface of the inner copper wire layer 7 is flush with the outer circular surface of the outer cylinder 4, and the outer copper wire layer 8 is flush with the outer circular surface of the outer plate 6.
[0026] The inner copper wire layer 7 is composed of copper wire one continuously wound in the annular groove 3. Preferably, copper wire one is connected to the outer plate 6 by welding. The outer copper wire layer 8 is composed of copper wire two continuously wound on the outer surface of the outer cylinder 4. Preferably, copper wire one is connected to the outer plate 6 by welding, and the winding direction of copper wire two is opposite to that of copper wire one. More preferably, the diameter of both copper wire one and copper wire two is 5 mm.
[0027] As a preferred embodiment, the outer cylinder 4 is a steel cylinder.
[0028] As a preferred embodiment, the inner side plate 5 is a steel side plate.
[0029] As a preferred embodiment, the outer side plate 6 is a large copper side plate.
[0030] In this invention, two annular grooves are respectively opened at both ends of the axial width of the outer cylinder, and the inner copper wire layer is connected in close fit within the annular grooves, while the outer copper wire layer is connected in close fit to the outer surface of the outer cylinder. This significantly enhances the conductivity of the cathode roller, especially for cathode rollers with large diameters. Because cathode rollers with large diameters are large in volume, they require more current and have higher requirements for the conductive system. When there is a connection problem between the copper sleeves at both ends of the cathode roller and the steel core shaft, the other conductive devices can provide secondary compensation current to ensure stable and uniform conductivity on the cathode roller surface. This avoids problems such as localized heating of the roller surface, heating of the shaft end, and mottling of the copper foil caused by insufficient conductivity. Therefore, by setting a double copper wire layer, the uniform distribution of current can be effectively ensured, which in turn helps to improve the quality of the copper foil.
[0031] This conductive structure significantly improves conductivity by winding double layers of copper wire at both ends of the cathode roller, effectively enhancing structural stability, ensuring copper foil quality, and contributing to increased production efficiency.
Claims
1. A cathode roll two-end winding double-layer copper wire reinforced conductive structure, comprising a cathode roll core (1) and a roll barrel (2), the roll barrel (2) being sleeved on the outside of the cathode roll core (1); characterized in that, The inner copper wire layer (7) and the outer copper wire layer (8) are further included. The roller (2) comprises an outer cylinder (4), an inner side plate (5) and an outer side plate (6), two annular grooves (3) are formed on the outer side of the two ends of the outer cylinder (4) in the width direction; the inner side plate (5) is fixedly encapsulated on the inner side of the end of the outer cylinder (4), the outer side plate (6) is arranged on the outer side of the inner side plate (5) in a close manner, and is fixedly connected with the end of the outer cylinder (4), and the outer circular surface of the outer side plate (6) extends to the outer side of the outer circular surface of the outer cylinder (4); The inner copper wire layer (7) is connected in the annular groove (3) in a close manner, and the end of the inner copper wire layer (7) is electrically connected with the outer side plate (6); The outer copper wire layer (8) is connected on the outer circular surface of the outer cylinder (4) in a close manner, and the end of the outer copper wire layer (8) is electrically connected with the inner copper wire layer (7) and the outer side plate (6) at the same time.
2. A cathode roll two end winding reinforced conductive structure according to claim 1, wherein, The outer surface of the inner copper wire layer (7) is flush with the outer circular surface of the outer cylinder (4), and the outer copper wire layer (8) is flush with the outer circular surface of the outer side plate (6).
3. The cathode roll two-end winding double-layer copper wire reinforced conductive structure according to claim 1 or 2, characterized in that, The inner copper wire layer (7) is composed of copper wire one which is continuously wound in the annular groove (3); the outer copper wire layer (8) is composed of copper wire two which is continuously wound on the outer surface of the outer cylinder (4), and the winding direction of the copper wire two is opposite to the winding direction of the copper wire one.
4. The cathode roller two-end winding double-layer copper wire reinforced conductive structure according to claim 3, characterized in that, The outer cylinder (4) is a steel cylinder.
5. A cathode roll two end winding reinforced conductive structure according to claim 4, wherein, The inner side plate (5) is a steel side plate.
6. A cathode roll two end winding reinforced conductive structure according to claim 5, wherein, The outer side plate (6) is a large copper side plate.