A copper strip surface pretreatment guide roller

Abstract

This invention provides a guide roller for pre-treating the surface of copper strip, relating to the field of copper-aluminum composite strip production technology. The roller guide device of this invention has a mounting frame, a mounting shaft, and multiple guide wheels. Grooves for scratching the copper strip are arranged along the circumference of the guide wheels, and a drive gear is mounted on one of the guide wheels. A sanding roller is mounted on the mounting frame, parallel to the mounting shaft, and connected to the drive gear via a driven gear. The diameter of the guide wheel is larger than the diameter of the sanding roller, causing the guide wheel to rotate forward under the drive of the copper strip, and driving the sanding roller to rotate in the opposite direction via the drive gear, thus roughening the copper strip. This invention enables relative sliding between the copper strip and the guide wheels for initial roughening of the copper strip, and also allows the sanding roller to grind the surface of the copper strip at a high relative speed for secondary roughening, allowing the copper strip to bond with the molten aluminum before oxidation occurs, thus solving the problem of easy oxidation of roughened copper strip.

Description

Technical Field

[0001] This utility model is specifically a guide roller for pre-treatment of copper strip surface, which relates to the field of copper-aluminum composite strip production technology. Background Technology

[0002] Copper-aluminum composite materials combine the advantages of copper and aluminum, featuring high electrical conductivity, thermal conductivity, lightweight, corrosion resistance, and low overall cost. They are widely used in fields such as power, semiconductors, electronic devices, and power lithium batteries.

[0003] As attached Figure 1 As shown, in the field of power lithium batteries, copper-aluminum composite materials with copper and aluminum composites at both ends and aluminum in the middle are commonly used as the terminals of lithium batteries. In the process of preparing this copper-aluminum composite material, guide wheels are needed to guide the copper strips so that two adjacent copper strips can enter the gap of the rolls at equal intervals to undergo solid-liquid bonding with the molten aluminum.

[0004] Experiments have shown that the composite strength of the copper-aluminum interface is related to the surface roughness of the copper strip; the greater the surface roughness, the higher the composite strength. While roughening the copper strip with a steel brush roller can increase its surface roughness, the roughened copper strip is prone to oxidation, and the presence of an oxide layer severely reduces the composite strength of the copper-aluminum interface. Currently, the best solution is to roughen the copper strip before lamination, ensuring it is laminated with the molten aluminum before oxidation occurs. Considering that the copper strip needs guide wheels before entering the rollers, these guide wheels can be used to roughen the copper strip. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model discloses a guide roller for pre-treatment of copper strip surface. Its purpose is to roughen the copper strip with the guide roller so that the copper strip can be combined with the aluminum liquid before oxidation.

[0006] The present invention adopts the following technical solution: A guide roller for pre-treating the surface of copper strip, wherein the roller guiding device has a mounting frame, a mounting shaft, and multiple guide wheels mounted on the mounting shaft. Grooves for scratching the copper strip are arranged along the circumference of the guide wheels, and a drive gear is mounted on one of the guide wheels. A sanding roller is mounted on the mounting frame, parallel to the mounting shaft, and meshed with the drive gear via a driven gear. The diameter of the guide wheel is larger than the diameter of the sanding roller, causing the guide wheel to rotate forward under the drive of the copper strip, and driving the sanding roller to rotate in the opposite direction via the drive gear, thus roughening the copper strip.

[0007] Further improvements to the technical solution: the number of teeth on the driving gear is greater than the number of teeth on the driven gear, and the rotational speed of the sanding belt roller is greater than the rotational speed of the guide wheel.

[0008] Further improved technical solution: The sanding belt roller consists of a roller shaft and a sanding belt bonded to the roller shaft.

[0009] Further improve the technical solution: square column structures are provided at both ends of the mounting shaft and the sanding belt roller, and square groove structures that cooperate with the square column structures are provided on the mounting frame.

[0010] Further improvement to the technical solution: A debris collection tray is installed on the mounting frame, and the debris collection tray is located below the mounting shaft and the sanding belt roller.

[0011] Further improvement of the technical solution: A brush is provided on the edge of the debris collection tray to brush off the debris attached to the copper strip.

[0012] After implementing the above technical solution, compared with the prior art, the present invention can produce the following beneficial effects: 1. Due to the presence of the sanding roller, the copper strip slides relative to the guide wheel. The grooves on the guide wheel can scratch the surface of the copper strip like a file, thus achieving the initial roughening of the copper strip.

[0013] 2. Because the guide wheel can drive the sanding belt roller to rotate in the opposite direction, the sanding belt roller can grind the surface of the copper strip at a very high relative speed, thus achieving secondary roughening of the copper strip.

[0014] 3. This utility model ingeniously uses the roller as a power source to drive the sanding belt roller and guide wheel to rotate, without the need for an additional power source.

[0015] 4. In addition to guiding the copper strip, this utility model can also roughen the copper strip, so that the copper strip can be combined with the aluminum liquid before it oxidizes, thus solving the problem that roughened copper strip is prone to oxidation. Attached Figure Description

[0016] Appendix Figure 1 The diagram shown is a schematic of lithium battery terminals.

[0017] Appendix Figure 2 The diagram shown is a schematic representation of the overall structure of this roller guide device.

[0018] Appendix Figure 3 The attached image shows the attached image. Figure 2 A magnified view of a portion of the image.

[0019] Appendix Figure 4 The diagram shown is a schematic of a copper-aluminum solid-liquid composite.

[0020] Appendix Figure 5 The attached image shows the attached image. Figure 4 A magnified view of a portion of the image.

[0021] In the attached diagram: 1. Mounting bracket; 2. Mounting shaft; 3. Guide wheel; 3.1. Tooth groove; 3.2. Drive gear; 4. Sanding belt roller; 4.1. Sanding belt; 4.2. Driven gear; 5. Debris collection disc; 6. Brush; 7. Copper belt; 8. Roller; 9. Molten aluminum. Detailed Implementation

[0022] The preferred embodiments of this utility model are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of this utility model and are not intended to limit the scope of protection of this utility model. It should be noted that in the description of this utility model, terms such as "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation and positional relationship, and therefore should not be construed as a limitation of this utility model. It should also be noted that in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] A guide roller for pre-treatment of copper strip surface is disclosed, relating to the field of copper-aluminum composite strip production technology. The composition and working principle of this utility model are described in detail below.

[0024] See attached document Figure 2 and attached Figure 3 The roller guide device of this utility model has a mounting frame 1, a mounting shaft 2, and five guide wheels 3 mounted on the mounting shaft 2. Unlike existing guide wheels, the guide wheels 3 have toothed grooves 3.1 for scratching copper strips along their circumference, and a drive gear 3.2 is provided on one of the guide wheels 3 near the edge.

[0025] A sanding belt roller 4 is mounted on the mounting frame 1. The diameter r of the sanding belt roller 4 is smaller than the diameter R of the guide wheel 3. The sanding belt roller 4 consists of a roller shaft and a sanding belt 4.1 bonded to the roller shaft. The copper strip is polished by the sanding belt 4.1. The sanding belt roller 4 is arranged parallel to the mounting shaft 2 and is connected to the driving gear 3.2 through a driven gear 4.2. When the guide wheel 3 rotates, the sanding belt roller 4 rotates through the meshing of the driving gear 3.2 and the driven gear 4.2. In this embodiment, the number of teeth of the driving gear 3.2 is greater than the number of teeth of the driven gear 4.2, and the rotational speed of the sanding belt roller 4 is greater than the rotational speed of the guide wheel 3.

[0026] For easy disassembly, square column structures are provided at both ends of the mounting shaft 2 and the sanding belt roller 4, and square groove structures that mate with the square column structures are provided on the mounting frame 1. When it is necessary to replace the guide wheel or sanding belt, simply lift the mounting shaft 2 and the sanding belt roller 4 upwards to remove them from the mounting frame 1.

[0027] In addition, a debris collection tray 5 is provided on the mounting frame 1. The debris collection tray 5 is located below the mounting shaft 2 and the sanding roller 4 and is used to collect the debris generated during the roughening process.

[0028] See attached document Figure 4 and attached Figure 5 In the preparation process of copper-aluminum composite materials, guide wheels 3 are used to guide the copper strips 7, allowing adjacent copper strips 7 to enter the gap of the roll 8 at equal intervals to undergo solid-liquid composite with the molten aluminum 9. For this roll guiding device, the roll 8 acts as a power source, pulling the copper strips 7 at a uniform speed, causing the copper strips 7 to be taut on the guide wheels 3 and the abrasive roller 4, forming a wrap angle with them. At this time, friction is generated between the copper strips 7 and the guide wheels 3, and between the copper strips 7 and the abrasive roller 4. Because the guide wheels 3 have circumferentially arranged grooves 3.1, which can "bite" into the relatively soft copper strips 7, the friction between the copper strips 7 and the guide wheels 3 is greater than the friction between the copper strips 7 and the abrasive roller 4.

[0029] If there is no driving gear 3.2 and driven gear 4.2 between the guide wheel 3 and the sanding belt roller 4, then under the drive of the copper belt 7, both the guide wheel 3 and the sanding belt roller 4 will rotate counterclockwise, and there will be basically no relative slippage between the copper belt 7 and the guide wheel 3, and between the copper belt 7 and the sanding belt roller 4, and the linear speeds of the guide wheel 3 and the sanding belt roller 4 will be the same.

[0030] After setting a driving gear 3.2 and a driven gear 4.2 between the guide wheel 3 and the sanding belt roller 4, since the diameter R of the guide wheel 3 is larger than the diameter r of the sanding belt roller 4, the frictional force generated between the copper belt 7 and the guide wheel 3 is greater than the frictional force generated between the copper belt 7 and the sanding belt roller 4. Therefore, the torque exerted by the copper belt 7 on the guide wheel 3 is greater than the torque exerted by the copper belt 7 on the sanding belt roller 4, causing the guide wheel 3 to rotate counterclockwise under the drive of the copper belt 7, and driving the sanding belt roller 4 to rotate clockwise through the driving gear 3.2 and the driven gear 4.2. This rotation method will produce the following beneficial effects: 1. The rotation direction of the sanding roller 4 is opposite to the movement direction of the copper belt 7. The copper belt 7 applies a reverse torque to the sanding roller 4 through friction. This reverse torque acts on the guide wheel 3 through the driven gear 4.2 and the driving gear 3.2, which is equivalent to applying a resistance torque to the guide wheel 3, reducing the rotational speed of the guide wheel 3, and causing the guide wheel 3 to slide relative to the copper belt 7. Due to the relative sliding between the copper belt 7 and the guide wheel 3, the toothed grooves 3.1 on the guide wheel 3 can scratch the surface of the copper belt 7 like a file, achieving the initial roughening of the copper belt 7.

[0031] 2. Since the number of teeth of the driving gear 3.2 is greater than the number of teeth of the driven gear 4.2, the rotational speed of the sanding roller 4 is greater than the rotational speed of the guide wheel 3. More importantly, the rotational direction of the sanding roller 4 is opposite to the movement direction of the copper strip 7. Therefore, the sanding roller 4 can grind the surface of the copper strip 7 at a very high relative speed, thus achieving secondary roughening of the copper strip 7.

[0032] Although the grinding direction of the abrasive belt roller 4 is opposite to the movement direction of the copper strip 7, debris may still adhere to the roughened copper strip 7. The presence of debris will affect the composite strength of the copper strip 7 and the molten aluminum 9. Therefore, a brush 6 can be installed on the edge of the debris collection tray 5 to brush away the debris on the copper strip 7 and collect the debris in the debris collection tray 5.

[0033] In summary, the feed roller guiding device of this utility model not only guides the copper strip 7, but also roughens the copper strip 7 with the power of the roller 8, so that the copper strip 7 does not have time to oxidize before it combines with the aluminum liquid 9, thus solving the problem that roughened copper strip is prone to oxidation.

[0034] It is worth noting that the content not described in detail in the above embodiments is prior art. It is also worth noting that any additions, subtractions, substitutions, and improvements made by those skilled in the art based on the structure and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A copper strip surface pre-treatment guide roll, said roll guide having a mounting frame, a mounting shaft and a plurality of guide wheels fitted on the mounting shaft, characterized in that: The guide wheel has grooves for scratching the copper strip along its circumference, and a drive gear is installed on one of the guide wheels. A sanding roller is installed on the mounting frame, and the sanding roller is arranged parallel to the mounting shaft and is connected to the drive gear through a driven gear. The diameter of the guide wheel is larger than the diameter of the sanding roller, so that the guide wheel rotates forward under the drive of the copper strip, and drives the sanding roller to rotate in the opposite direction through the drive gear, thus roughening the copper strip.

2. A copper strip surface pre-treatment guide roll as defined in claim 1, characterized in that: The number of teeth on the driving gear is greater than the number of teeth on the driven gear, and the rotational speed of the sanding belt roller is greater than the rotational speed of the guide wheel.

3. A copper strip surface pre-treatment guide roll as defined in claim 1, characterized in that: The abrasive belt roller consists of a roller shaft and an abrasive belt bonded to the roller shaft.

4. A copper strip surface pre-treatment guide roll as defined in claim 1, characterized in that: Square column structures are provided at both ends of the mounting shaft and the sanding belt roller, and square groove structures that cooperate with the square column structures are provided on the mounting frame.

5. A copper strip surface pre-treatment guide roll as defined in claim 1, characterized in that: A debris collection tray is installed on the mounting frame, located below the mounting shaft and the sanding belt roller.

6. A copper strip surface pre-treatment guide roll as defined in claim 5, characterized in that: A brush is provided at the edge of the debris collection tray to brush away the debris attached to the copper strip.

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