A liquid scraping device for copper foil surface treatment
By using transparent PVC water-retaining sheets and tensioning guide rollers in the copper foil surface treatment device, the problem of yellowing caused by edge sinking of copper foil was solved, improving the appearance quality and performance stability of copper foil.
Patent Information
- Application Number
- CN202521579631.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-28
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-28
AI Technical Summary
When copper foil is immersed in a chromium plating solution, uneven tension causes the edges to sink, resulting in both smooth and rough surfaces being soaked and causing the edges to turn yellow.
A scraping device for copper foil surface treatment was designed. It uses a transparent PVC water-removing sheet with an angle adjustment range of 60°-75° to fit tightly against the copper foil surface. The tension of the copper foil is adjusted by tension rollers and guide rollers to block the flow of solution and prevent the solution from overflowing onto the smooth surface.
It effectively prevents the edges of copper foil from yellowing, improves appearance quality and performance stability, ensures the stability of the copper foil during processing, and reduces solution residue.
Smart Images

Figure CN224678193U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of copper foil surface treatment equipment, and in particular to a scraping device for copper foil surface treatment. Background Technology
[0002] The copper foil produced by the foil machine is called raw foil or rough foil. It cannot directly meet the needs of downstream production. It must be electroplated on the surface of the rough foil, such as copper plating, zinc plating and chromium plating, in order to improve the various performance indicators of the rough foil, such as peel resistance and oxidation resistance.
[0003] After the copper foil passes through each liquid tank, most of the liquid on the foil surface needs to be scraped off to avoid excessive waste of solution. However, when the rough foil passes through the chromium plating solution, uneven tension at the edge of the guide roller can easily occur, causing the copper foil to sink. This results in both the smooth and rough sides of the copper foil being immersed in the solution, leading to yellowing of the edges. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a scraping device for copper foil surface treatment. It can effectively counteract the sinking tendency of the copper foil edge caused by insufficient tension. The water-removing plate is closely attached to the copper foil surface and can quickly block the vertical flow of the solution the moment the copper foil leaves the chromium plating solution, preventing the solution from turning from below the copper foil to above the polished surface. At the same time, it prevents the polished and rough surfaces from being continuously soaked in the residual solution. It fundamentally solves the problem of yellowing of the copper foil edge, significantly improves the appearance quality and performance stability of the copper foil, and can effectively solve the problems in the background art.
[0005] To achieve the aforementioned objective, this utility model adopts the following technical solution: A scraping device for copper foil surface treatment includes a treatment liquid storage tank. An overflow liquid collection tank is fixed to the side of the treatment liquid storage tank. Two sets of tension rollers arranged symmetrically on the left and right are rotatably connected to the inner side of the treatment liquid storage tank near the top. A guide roller is rotatably connected to the inner side of the treatment liquid storage tank near the bottom. An angle adjustment shaft is rotatably connected to the inner side of the treatment liquid storage tank. A clamping plate is fixed to the side of the angle adjustment shaft. A water-retaining plate is provided at the end of the clamping plate. The edge of the water-retaining plate is in contact with the surface of the copper foil. A drive mechanism is installed at the end of the angle adjustment shaft. The drive mechanism is connected to the side of the treatment liquid storage tank through a locking mechanism.
[0006] Furthermore, the water-retaining sheet is made of transparent PVC material.
[0007] Furthermore, the angle adjustment range of the angle adjustment axis is 60°-75°.
[0008] Furthermore, the drive mechanism includes a telescopic rod and a handle, the telescopic rod being fixed to the end of the angle adjustment shaft, and the handle being fixed to the telescopic end of the telescopic rod.
[0009] Furthermore, the drive mechanism also includes a scale, which is evenly distributed on the side of the handle.
[0010] Furthermore, the locking mechanism includes a locking rod and a locking hole. The locking hole is evenly opened on the side of the treatment liquid storage tank, and the locking rod is evenly fixed on the side of the handle. The locking rod and the locking hole are engaged and inserted into each other.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This copper foil surface treatment scraping device has the following advantages: 1. The angle of the water-removing plate is precisely controlled within the range of 60°-75° by adjusting the angle shaft. This angle design effectively counteracts the sinking tendency of the copper foil edge caused by insufficient tension. The water-removing plate adheres tightly to the copper foil surface and can quickly block the vertical flow of the solution the moment the copper foil leaves the chromium plating solution, preventing the solution from flowing from below the copper foil to above the polished surface. At the same time, it prevents the polished and rough surfaces from being continuously soaked in residual solution. In addition, the transparent PVC material of the water-removing plate is soft and will not scratch the copper foil surface during the liquid scraping process, ensuring that the copper foil edge remains flat and clean. This fundamentally solves the problem of edge yellowing and significantly improves the appearance quality and performance stability of the copper foil.
[0012] 2. Through the coordinated action of two sets of symmetrical tension rollers and guide rollers, the running tension of the copper foil can be effectively adjusted. The tension rollers can flexibly adjust the tension according to the thickness and material characteristics of the copper foil to avoid copper foil deviation or sinking caused by tension fluctuations. The guide rollers guide the copper foil to enter the processing liquid storage tank smoothly at a preset angle, ensuring that the copper foil maintains a stable posture in the solution. This dual combination of tension control and angle adjustment ensures that the copper foil is always in the best state during processing and scraping, further reducing solution residue and edge quality problems caused by abnormal posture. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This utility model Figure 1 A magnified structural diagram at point A; Figure 3 This is a three-dimensional first cross-sectional structural diagram of the present invention; Figure 4 This is a schematic diagram of the three-dimensional second cross-sectional structure of this utility model.
[0014] In the diagram: 1-treatment liquid storage tank, 2-overflow liquid collection tank, 3-drive mechanism, 31-telescopic rod, 32-scale, 33-handle, 4-locking mechanism, 41-locking rod, 42-locking hole, 5-guide roller, 6-water hanging plate, 7-tensioning roller, 8-angle adjustment shaft, 9-clamping plate. Detailed Implementation
[0015] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.
[0016] Please see Figure 1-4 This embodiment provides a technical solution: a scraping device for copper foil surface treatment, including a treatment liquid storage tank 1. An overflow liquid collection tank 2 is fixed to the side of the treatment liquid storage tank 1. When there is too much solution in the treatment liquid storage tank 1, the overflowing solution will flow into the overflow liquid collection tank 2, which facilitates the recycling and reuse of the solution and reduces waste. Two sets of tension rollers 7 are rotatably connected to the inner side of the treatment liquid storage tank 1 near the top, and a guide roller 5 is rotatably connected to the inner side of the treatment liquid storage tank 1 near the bottom. The tension rollers 7 can adjust the tension of the copper foil to ensure that the copper foil is treated properly. Maintaining appropriate tension prevents copper foil from shifting or sinking due to uneven tension. The guide roller 5 cooperates with the tension roller 7 to guide the copper foil into the solution in the treatment liquid storage tank 1 at a preset angle, ensuring full contact between the copper foil and the solution and improving the treatment effect. An angle adjustment shaft 8 is rotatably connected to the inner side of the treatment liquid storage tank 1. A clamping plate 9 is fixed to the side of the angle adjustment shaft 8. A water-hanging plate 6 is provided at the end of the clamping plate 9. The edge of the water-hanging plate 6 is in contact with the surface of the copper foil. A drive mechanism 3 is installed at the end of the angle adjustment shaft 8. The drive mechanism 3 is connected to the side of the treatment liquid storage tank 1 through a locking mechanism 4.
[0017] The water-removing plate 6 is made of transparent PVC. This material is soft and has a smooth surface, ensuring good scraping effect when removing copper foil surface treatment liquid while avoiding scratching the copper foil surface and preserving the integrity of the copper foil. The angle adjustment range of the angle adjustment shaft 8 is 60°-75°. Within this angle range, the water-removing plate 6 can effectively scrape off more than 80% of the treatment liquid from the copper foil surface. At the same time, it can prevent the solution from turning over to the top of the smooth surface due to the low tension at the edge of the copper foil, thus preventing the edge of the smooth surface from turning yellow. By rotating the angle adjustment shaft 8, the clamping plate 9 and the water-removing plate 6 can be rotated synchronously, thereby adjusting the contact angle between the water-removing plate 6 and the copper foil surface.
[0018] The drive mechanism 3 includes a telescopic rod 31 and a handle 33. The telescopic rod 31 is fixed to the end of the angle adjustment shaft 8, and the handle 33 is fixed to the telescopic end of the telescopic rod 31. The drive mechanism 3 also includes a scale 32, which is evenly distributed on the side of the handle 33. When the operator holds the handle 33, the handle 33 drives the angle adjustment shaft 8 to rotate through the telescopic rod 31, thereby adjusting the angle of the water-hanging plate 6. The scale 32 is evenly distributed on the side of the handle 33, and the operator can accurately control the rotation angle of the angle adjustment shaft 8 according to the scale 32, so that the angle of the water-hanging plate 6 is within the optimal range of 60°-75°.
[0019] The locking mechanism 4 includes a locking rod 41 and a locking hole 42. The locking holes 42 are evenly distributed on the side of the processing liquid storage tank 1. The locking rod 41 is evenly fixed on the side of the handle 33. The locking rod 41 and the locking hole 42 are inserted into each other. After the water-hanging plate 6 is adjusted to a suitable angle, the locking rod 41 is aligned with the corresponding locking hole 42 and inserted to fix the position of the angle adjustment shaft 8, preventing the angle adjustment shaft 8 from rotating during the copper foil conveying process, and ensuring that the water-hanging plate 6 stably scrapes the liquid from the copper foil surface. The handle 33 moves in extension and retraction through the telescopic rod 31, so that the locking rod 41 on the handle 33 can be inserted into the locking hole 42.
[0020] The working principle of the scraping device for copper foil surface treatment provided by this utility model is as follows: The copper foil enters the treatment liquid storage tank 1 under the guidance of the tension roller 7 and the guide roller 5, and is surface treated by contacting the treatment liquid. The treated copper foil continues to be conveyed. When it passes the water-hanging plate 6, the water-hanging plate 6 scrapes off the excess treatment liquid on the surface of the copper foil at a preset angle. The scraped treatment liquid flows back to the treatment liquid storage tank 1, and the overflowing treatment liquid flows into the overflow liquid collection tank 2. By adjusting the angle of the water-hanging plate 6, the solution can be effectively prevented from rising above the bright surface of the copper foil, preventing the edge of the bright surface from turning yellow and improving the surface quality of the copper foil.
[0021] It is worth noting that the components disclosed in the above embodiments are all general standard parts or parts known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.
[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. For example, a rotary connection can refer to a rotary connection through a bearing.
[0023] The parts of this utility model not described in detail are prior art. Although this utility model has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. However, those skilled in the art should understand that various changes in form and detail can be made to this utility model without departing from the spirit and scope of this utility model as defined by the appended claims, and all such changes shall be within the protection scope of this utility model.
Claims
1. A scraping device for copper foil surface treatment, comprising a treatment liquid storage tank (1), characterized in that: An overflow collection tank (2) is fixed to the side of the treatment liquid storage tank (1). Two sets of tension rollers (7) are rotatably connected to the inner side of the treatment liquid storage tank (1) near the top position. A guide roller (5) is rotatably connected to the inner side of the treatment liquid storage tank (1) near the bottom position. An angle adjustment shaft (8) is rotatably connected to the inner side of the treatment liquid storage tank (1). A clamp (9) is fixed to the side of the angle adjustment shaft (8). A water-hanging plate (6) is provided at the end of the clamp (9). The edge of the water-hanging plate (6) is in contact with the surface of the copper foil. A drive mechanism (3) is installed at the end of the angle adjustment shaft (8). The drive mechanism (3) is connected to the side of the treatment liquid storage tank (1) through a locking mechanism (4).
2. The scraping device for copper foil surface treatment according to claim 1, characterized in that: The water-retaining sheet (6) is made of transparent PVC material.
3. The scraping device for copper foil surface treatment according to claim 1, characterized in that: The angle adjustment range of the angle adjustment axis (8) is 60°-75°.
4. The scraping device for copper foil surface treatment according to claim 1, characterized in that: The drive mechanism (3) includes a telescopic rod (31) and a handle (33). The telescopic rod (31) is fixed to the end of the angle adjustment shaft (8), and the handle (33) is fixed to the telescopic end of the telescopic rod (31).
5. The scraping device for copper foil surface treatment according to claim 4, characterized in that: The drive mechanism (3) also includes a scale (32), which is evenly distributed on the side of the handle (33).
6. A scraping device for copper foil surface treatment according to claim 1 or 4, characterized in that: The locking mechanism (4) includes a locking rod (41) and a locking hole (42). The locking hole (42) is evenly opened on the side of the treatment liquid storage tank (1). The locking rod (41) is evenly fixed on the side of the handle (33). The locking rod (41) and the locking hole (42) are engaged and plugged in.
