A polishing brush device for online polishing

Abstract

The utility model discloses a kind of on-line polishing and grinding are used polishing brush device, comprising: polishing brush roller, the both ends of the polishing brush roller are provided with polishing brush edge high part, the diameter of the polishing brush edge high part gradually increases from the middle part of polishing brush roller to end part direction, by setting polishing brush edge high part can when polishing and grinding cathode roller to edge part exert higher polishing and grinding pressure, to reach the effective polishing and grinding of edge part oxide layer, thereby solve the problem of cathode roller edge formation collapse depression.

Description

Technical Field

[0001] This utility model relates to the technical field of electrolytic copper foil production equipment, specifically to an online polishing brush device. Background Technology

[0002] In the electrolytic copper foil production process, the cathode roller, as the core carrier for copper foil electrodeposition, directly affects the uniformity and roughness of the copper foil. Cathode rollers are prone to scratches, oxide layers, or impurities during production, requiring periodic polishing to restore surface smoothness. Currently, the industry uses mechanical polishing (diamond / silicon carbide brushes) supplemented by chemical cleaning (nitric acid-hydrofluoric acid solution) to remove stubborn oxide layers. Some leading companies have introduced six-axis robotic arms for polishing, achieving a positioning accuracy of ±0.1mm, but the equipment cost exceeds 2 million RMB per unit, making widespread adoption in the industry difficult.

[0003] The existing technology uses a linear polishing brush, which cannot effectively remove the oxide layer on the edge of the cathode roller; at the same time, due to the existing process, the edge of the cathode roller will form a collapsed depression, and the polishing brush currently used cannot adapt to fit due to its rigid shape. Utility Model Content

[0004] This invention provides an online polishing brush device that can solve the problem that existing linear polishing brushes cannot effectively remove the oxide layer on the edge of the cathode roller, resulting in collapsed and sunken edges on the cathode roller.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an online polishing brush device, comprising: a polishing brush roller, wherein both ends of the polishing brush roller are provided with polishing edge height portions, the diameter of the polishing edge height portions gradually increases from the middle of the polishing brush roller towards the ends, and by setting the polishing edge height portions, higher polishing pressure can be applied to the edge when polishing the cathode roller, so as to achieve effective polishing of the oxide layer on the edge, thereby solving the problem of edge collapse and depression on the cathode roller.

[0006] Preferably, the high part of the brush edge and the brush roller are integrated into a single structure, which has high processing precision and is easy to install.

[0007] Preferably, the high edge of the polishing brush is sleeved on the end of the polishing brush roller, and a limiting end cap is installed at the end of the polishing brush roller to axially limit the high edge of the polishing brush. The high edge of the polishing brush is customized according to the actual situation of the oxide layer on the edge of the cathode roller and is replaced in a timely manner.

[0008] Preferably, the brush roller and the brush edge height section are axially guided by multiple guide ribs arranged along the axial direction, so that the brush edge height section can be accurately moved along the brush roller when it is replaced.

[0009] Preferably, both ends of the brush roller are axially fixed to the support rod via a fixed plate, and the end of the support rod is axially connected to a connecting rod. The diameter of the connecting rod is larger than that of the support rod. The support rod is connected to the support structure at both ends of the side of the brush roller, so that the brush roller and the cathode roller can be aligned.

[0010] Preferably, the connecting rod and the support rod are axially slidingly fitted, which facilitates adjustment of the axial position of the brush roller.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] By setting a higher edge for the polishing brush, the residual oxide layer thickness on the edge of the polishing brush roller can be significantly reduced, resulting in a significant improvement in oxide layer removal rate. At the same time, the Ra value of the polishing brush roller edge is reduced, which can meet the surface roughness requirements of cathode rollers in the copper foil industry. The height of the polishing brush edge can be adjusted for grinding or replacement based on the collapse of the cathode roller edge, increasing the contact area of ​​the collapsed edge area and effectively avoiding polishing blind spots. Downtime losses are reduced because the higher edge of the polishing brush can effectively polish the oxide layer on the edge, which can effectively reduce polishing time and thus increase machine uptime. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the first embodiment of the present utility model;

[0014] Figure 2 This is a structural diagram of the second embodiment of the present utility model;

[0015] Figure 3 This is a side sectional view of the present invention.

[0016] Figure label:

[0017] 1. Connecting rod, 2. Support rod, 3. Fixing plate, 4. Brush roller, 5. Brush edge height, 6. Limiting end cap, 7. Screw, 8. Guide rib. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] This invention addresses the problem that existing linear polishing brushes cannot effectively remove the oxide layer from the edges of the cathode roller, leading to edge collapse and depressions. Figure 1-3As shown, the following technical solution is provided: an online polishing brush device, comprising: a polishing brush roller 4, wherein both ends of the polishing brush roller 4 are provided with polishing edge height portions 5, the diameter of the polishing edge height portions 5 gradually increases from the middle of the polishing brush roller 4 towards the end, and by setting the polishing edge height portions 5, a higher polishing pressure can be applied to the edge when polishing the cathode roller, so as to achieve effective polishing of the oxide layer on the edge, thereby solving the problem of edge collapse and depression on the cathode roller.

[0020] The cone angle of the high part of the brush edge is preferably 15°-30°, which can be adaptively adjusted according to the arc of the cathode roller collapse. When using it, the initial positioning should be performed first: the brush roller 4 is moved to a distance of 5mm from the cathode roller surface, and the position of the cathode roller edge can be identified by a visual sensor.

[0021] Then, adjust the pressure: automatically calculate the downward pressure at the height of the brush edge based on the diameter of the cathode roller. The recommended downward pressure is 0.3-0.5mm. The calculation formula is: downward pressure = 0.0004 × D, where D is the diameter of the cathode roller.

[0022] Next, set the polishing parameters: rotation speed 1800-2200 rpm, feed speed 0.5-1 m / min, and spray with nitric acid solution (concentration 5-8%).

[0023] The surface of the edge height section 5 of the polishing brush is hard chrome plated to improve wear resistance and extend service life by 2-3 times compared to untreated parts. Through the conical structure design of the edge height section, the edge pressure during polishing is increased by 30%-50% compared to traditional straight-line polishing brushes. Actual test data shows that when the polishing brush roller speed is 2000 rpm, the edge oxide layer removal rate increases from 0.08 mm / min to 0.12-0.14 mm / min. When cleaned with nitric acid-hydrofluoric acid solution, the residual oxide layer thickness can be controlled below 5 μm, a significant improvement compared to the approximately 15-20 μm residue of traditional processes, meeting the surface requirements of cathode rollers for high-end electrolytic copper foil (such as 6 μm lithium battery copper foil).

[0024] Meanwhile, after polishing, the depth of the edge collapse of the cathode roller was reduced from 0.3-0.5 mm to less than 0.1 mm, and the surface roughness Ra value was reduced from 1.2 μm to less than 0.6 μm. According to the scanning electron microscope, after the edge oxide layer was removed, the metal substrate showed a uniform mirror-like texture, avoiding the problem of copper foil edge tearing caused by the depression.

[0025] Meanwhile, the polishing time per cycle is reduced from 45 minutes in the traditional process to 25-30 minutes, and the annual uptime of a single machine is increased by about 8%; the high part of the polishing brush edge can be replaced separately (the cost is about 1 / 3 of the overall polishing brush roller), reducing the annual consumable cost by more than 40%.

[0026] In the first embodiment, the polishing brush edge height 5 and the polishing brush roller 4 are integrally formed, with high processing precision and simple installation. Specifically, the polishing brush roller 4 is made of 45# steel with quenching treatment. The polishing brush edge height 5 and the roller body are formed by CNC lathe in one step. The surface roughness Ra≤1.6μm, the diameter gradient is 0.5-1mm / cm (from the middle of the roller to the end), and the surface is inlaid with diamond abrasive grains with a grit size of 80#. It is suitable for high-frequency polishing scenarios with oxide layer thickness >0.1mm. The polishing brush edge height 5 can be re-grinded with grinding equipment during use as needed.

[0027] In the second embodiment, the high edge part 5 of the polishing brush is sleeved on the end of the polishing brush roller 4. The end of the polishing brush roller 4 is equipped with a limiting end cap 6 to axially limit the high edge part 5 of the polishing brush. The high edge part 5 of the polishing brush is customized according to the actual situation of the oxide layer on the edge of the cathode roller and is replaced in time. The limiting end cap 6 is connected to the end face of the polishing brush roller 4 by screws 7 and is fixed by four M8 screws 7. The end face runout is ≤0.03mm.

[0028] In this embodiment, the brush roller 4 and the brush edge height 5 are axially guided by a plurality of guide ribs 8 arranged along the axial direction, so that the brush edge height 5 can be accurately moved along the brush roller 4 when it is replaced. Specifically, four axial guide grooves are opened on the inner wall, the guide grooves are 8mm wide and 5mm deep, and are connected to the guide ribs 8 at the end of the brush roller 4.

[0029] In this embodiment, the two ends of the brush roller 4 are axially fixedly connected to the support rod 2 via the fixed plate 3. The end of the support rod 2 is axially connected to the connecting rod 1. The diameter of the connecting rod 1 is larger than the diameter of the support rod 2. The support rod 2 is connected to the support structure at both ends of the side of the brush roller 4, so that the brush roller 4 and the cathode roller can be aligned. The connecting rod 1 is connected to the brush motor via a coupling to drive the brush roller 4 to rotate. Both the connecting rod 1 and the support rod 2 can be made of stainless steel, which has good corrosion resistance and strength.

[0030] In this embodiment, the connecting rod 1 and the support rod 2 are axially slidingly fitted to facilitate adjustment of the axial position of the brush roller 4. Specifically, the connecting rod 1 has a diameter of φ40mm, the support rod 2 has a diameter of φ30mm, the inner wall of the connecting rod has an axial groove (groove width 10mm, depth 6mm), and the outer wall of the support rod has a slider with a sliding resistance ≤50N. Axial fine adjustment is achieved by driving the screw through a handwheel (not shown), with an adjustment accuracy of ±0.1mm. When aligning, the laser alignment instrument is activated to detect the parallelism between the brush roller and the cathode roller. The handwheel is rotated to adjust the axial position of the connecting rod 1 until the parallelism error is <0.1mm / m, and the positioning nut at the end of the support rod 2 is locked.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] Furthermore, in this utility model, descriptions involving terms such as "primary," "secondary," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "primary" or "secondary" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

Claims

1. A polishing brush device for online polishing, characterized in that, The application relates to a brush polishing roller (4) with brush polishing edge high parts (5) arranged at both ends of the brush polishing roller (4), wherein the diameters of the brush polishing edge high parts (5) gradually increase from the middle part of the brush polishing roller (4) to the end part. The brush polishing edge high parts (5) are integrally formed with the brush polishing roller (4).

2. The on-line buffing apparatus for polishing according to claim 1, characterized by: The brush polishing edge high parts (5) are sleeved on the end part of the brush polishing roller (4), and the end part of the brush polishing roller (4) is provided with a limiting end cover (6) for axially limiting the brush polishing edge high parts (5).

3. The on-line buffing and polishing apparatus according to claim 1, wherein: The brush polishing roller (4) and the brush polishing edge high parts (5) are axially guided through a plurality of guide ribs (8) arranged along the axial direction.

4. The on-line buffing and polishing apparatus according to claim 3, wherein: Both ends of the brush polishing roller (4) are axially fixedly connected with a supporting rod (2) through a fixing disc (3), the end part of the supporting rod (2) is axially connected with a connecting rod (1), and the diameter of the connecting rod (1) is larger than that of the supporting rod (2).

5. The on-line buffing and polishing apparatus according to any one of claims 1 to 4, characterized in that: The connecting rod (1) and the supporting rod (2) are axially slidably matched.

6. The on-line buffing and polishing apparatus according to claim 5, wherein: ​

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