A device for preventing edge tearing of an ultra-thin copper foil

Abstract

The utility model provides a prevent the device of tearing edge of ultrathin copper foil belongs to ultrathin copper foil processing technical field, this prevent the device of tearing edge of ultrathin copper foil includes device main part, towed subassembly, towed subassembly is located in device main part, heat treatment subassembly, heat treatment subassembly is equipped with two groups, and each group heat treatment subassembly includes heating roller and connecting rod, heating roller is equipped with two, two heating rollers are respectively rotatoryly connected in the both sides inner wall of device main part, and the end of approaching of two heating rollers is fixedly connected in connecting rod, and each heating roller is equipped with electromagnetic induction coil in, through heat treatment adjustment copper foil's grain size and texture, promote its mechanical property, reduce tearing edge risk, heat treatment homogenization copper foil's internal stress distribution, especially the stress concentration problem of edge area, thereby reduce tearing edge possibility.

Description

Technical Field

[0001] This utility model belongs to the field of ultra-thin copper foil processing technology, specifically relating to a device for preventing ultra-thin copper foil from tearing at the edges. Background Technology

[0002] Ultrathin copper foil processing is a precision manufacturing technology primarily used in lithium-ion batteries, flexible circuit boards, and high-frequency communication equipment. Its thickness is typically below 6 micrometers, and can even reach 1.5 micrometers, exhibiting excellent electrical conductivity, thermal conductivity, and mechanical properties. The processing flow of ultrathin copper foil includes key steps such as carrier pretreatment, electroplating deposition, stripping, and post-processing. First, the surface of the metal carrier is cleaned and activated to ensure good adhesion of the copper layer. Next, a copper layer is deposited on the carrier surface through electroplating. This process requires strict control of current density and solution temperature to obtain a uniform copper foil with high adhesion. Subsequently, a special process is used to peel the copper foil from the carrier, achieving a stripping efficiency of up to 99%. Finally, post-processing steps such as surface leveling, slitting, and packaging are performed. During processing, ultrasonic stirring technology improves the surface morphology of the copper foil, prevents crystal precipitation, and enhances uniformity. Simultaneously, improvements to the electroplating tank structure ensure the stability and uniformity of the electroplating process, thereby increasing the yield. The selection of highly conductive and magnetically permeable metal materials, combined with precise process parameters, ensures the high performance of the copper foil. Due to its superior performance, ultrathin copper foil serves as a current collector material for the negative electrode of lithium batteries in the new energy field, significantly improving battery energy density and cycle life. In electronic devices, ultrathin copper foil is a key material for flexible circuit boards, high-frequency communication equipment, and 5G communication. Its applications are also gradually expanding in high-tech fields such as aerospace and medical devices. With the rapid development of the new energy vehicle and consumer electronics markets, the global ultrathin copper foil market is showing stable growth. In the future, through technological innovation and process optimization, the production efficiency and performance of ultrathin copper foil will be further improved, providing broader development space for related industries. In conclusion, ultrathin copper foil processing is a high-tech field integrating materials science, precision manufacturing, and process control, and its development is of great significance to promoting technological progress in electronics, energy, and other fields.

[0003] In existing technologies, the processing of ultra-thin copper foil is subject to edge tearing due to the electroplating edge effect. This tearing reduces production efficiency and yield, and can also cause equipment failures and quality problems in downstream applications. Utility Model Content

[0004] The purpose of this invention is to provide a device to prevent the tearing of ultra-thin copper foil edges. This device aims to solve the problem of ultra-thin copper foil tearing during processing due to the electroplating edge effect. Tearing of copper foil edges reduces production efficiency and yield, and can also cause equipment failure and problems in downstream applications.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A device for preventing the edges of ultra-thin copper foil from tearing includes:

[0007] Main body of the device;

[0008] A traction assembly, wherein the traction assembly is disposed within the main body of the device;

[0009] The heat treatment assembly is provided in two sets. Each set of heat treatment assemblies includes a heating roller and a connecting rod. There are two heating rollers, which are rotatably connected to the inner walls of both sides of the main body of the device. The connecting rod is fixedly connected to the close ends of the two heating rollers.

[0010] Each of the heating rollers is equipped with an electromagnetic induction coil.

[0011] The device includes two coolers, both of which are fixedly connected to the surface of the main body of the device and are respectively connected to multiple heating rollers.

[0012] As a preferred embodiment of this utility model, the traction assembly includes a traction roller, a first motor, and a first gear. There are two traction rollers and two first gears. The two traction rollers are rotatably connected to the main body of the device. The two first gears are respectively fixedly connected to the ends of the two traction rollers and mesh with each other. The first motor is fixedly connected to the surface of the main body of the device, and the output end of the first motor is fixed to the end of one of the traction rollers.

[0013] As a preferred embodiment of this utility model, the surface of the main body of the device is provided with a transmission assembly. The transmission assembly is connected to multiple heating rollers. The transmission assembly includes a second gear, a third gear, and a second motor. There are two second gears, and the two second gears are respectively fixedly connected to the ends of two of the heating rollers. The third gear is rotatably connected to the surface of the main body of the device and meshes with two of the second gears. The second motor is fixedly connected to the surface of the main body of the device, and the output end of the second motor is fixed to the end of one of the heating rollers.

[0014] As a preferred embodiment of this utility model, a first input roller is rotatably connected inside the main body of the device.

[0015] As a preferred embodiment of this utility model, a second input roller is rotatably connected inside the main body of the device.

[0016] As a preferred embodiment of this utility model, the surface of the main body of the device is fixedly connected with a plurality of fixing plates, and the plurality of fixing plates are respectively connected to two coolers.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. In this solution, heat treatment is used to adjust the grain size and texture of the copper foil, thereby improving its mechanical properties and reducing the risk of tearing. Heat treatment also homogenizes the internal stress distribution of the copper foil, especially the stress concentration problem in the edge area, thus reducing the possibility of tearing.

[0019] 2. In this solution, heat treatment improves the surface properties of the copper foil edge, such as reducing burrs or increasing surface smoothness, thereby reducing the risk of edge tearing. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a first-view perspective perspective view of the present invention;

[0022] Figure 2 This is a second-view perspective perspective view of the present invention;

[0023] Figure 3 This is a top view of the present invention.

[0024] In the figure: 1. Main body of the device; 2. First input roller; 3. Second input roller; 4. Traction roller; 5. First motor; 6. First gear; 7. Heating roller; 8. Fixing plate; 9. Cooler; 10. Second motor; 11. Second gear; 12. Third gear. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example

[0027] Please see Figures 1-3 The present invention provides the following technical solution:

[0028] A device for preventing the edges of ultra-thin copper foil from tearing includes:

[0029] Device body 1;

[0030] The traction assembly is located inside the main body 1 of the device;

[0031] The heat treatment assembly is provided in two sets. Each heat treatment assembly includes a heating roller 7 and a connecting rod. There are two heating rollers 7, which are rotatably connected to the inner walls of both sides of the main body 1 of the device. The connecting rod is fixedly connected to the close ends of the two heating rollers 7.

[0032] Each heating roller 7 is equipped with an electromagnetic induction coil;

[0033] There are two coolers 9, both of which are fixedly connected to the surface of the main body 1 of the device, and the two coolers 9 are respectively connected to multiple heating rollers 7.

[0034] In a specific embodiment of this utility model, the main body 1 of the device is connected to the cutting equipment for ultra-thin copper foil. After being processed by this device, the ultra-thin copper foil is input into the cutting equipment. The copper foil is pulled into the cutting equipment by the traction component. The edge of the copper foil passes through the heat treatment component, which heat-treats the edge of the copper foil. The heat treatment adjusts the grain size and texture of the copper foil, improves its mechanical properties, and reduces the risk of tearing. The heat treatment homogenizes the internal stress distribution of the copper foil, especially the stress concentration problem in the edge area, thereby reducing the possibility of tearing. The heat treatment improves the surface characteristics of the copper foil edge, such as reducing burrs or improving surface smoothness, thereby reducing the risk of tearing. The ultra-thin copper foil passes through the lower surface of the heating roller 7. The heating roller 7 is equipped with an electromagnetic induction coil. After being energized, heat is released on the surface of the heating roller 7. The copper foil passing through the surface of the heating roller 7 is heated by heat conduction. The heated copper foil is input into the cutting equipment. The cooler 9 is used to regulate the temperature of the heating roller 7 to prevent the temperature of the heating roller 7 from becoming too high.

[0035] Please refer to the details. Figures 1-3 The traction assembly includes a traction roller 4, a first motor 5, and a first gear 6. There are two traction rollers 4 and two first gears 6. The two traction rollers 4 are rotatably connected to the device body 1. The two first gears 6 are fixedly connected to the ends of the two traction rollers 4 respectively. The two first gears 6 mesh with each other. The first motor 5 is fixedly connected to the surface of the device body 1. The output end of the first motor 5 is fixed to the end of one of the traction rollers 4.

[0036] In this embodiment: When the first motor 5 in the traction assembly is running, it drives the traction roller 4 to rotate. The ends of the two traction rollers 4 are connected to the first gear 6. The two first gears 6 mesh with each other, and the two traction rollers 4 rotate at the same time. The ultra-thin copper foil passes through the two traction rollers 4. Through the rotation of the two traction rollers 4, the copper foil is output to the device.

[0037] Please refer to the details. Figures 1-3The device body 1 has a transmission assembly on its surface. The transmission assembly is connected to multiple heating rollers 7. The transmission assembly includes a second gear 11, a third gear 12, and a second motor 10. There are two second gears 11, which are fixedly connected to the ends of two heating rollers 7 respectively. The third gear 12 is rotatably connected to the surface of the device body 1 and meshes with two of the second gears 11. The second motor 10 is fixedly connected to the surface of the device body 1, and the output end of the second motor 10 is fixed to the end of one of the heating rollers 7.

[0038] In this embodiment: the transmission assembly is used to connect the heating roller 7. When the second motor 10 is running, it drives one of the heating rollers 7 to rotate. The two heating rollers 7 on the same side are fixed by the connecting rod. The two second gears 11 are connected to the two heating rollers 7 respectively. The third gear 12 meshes with the two second gears 11. After the connection, the multiple heating rollers 7 rotate in the same direction at the same time, and the copper foil passes under the surface of the heating roller 7.

[0039] Please refer to the details. Figures 1-3 The first input roller 2 is rotatably connected inside the main body 1 of the device.

[0040] In this embodiment, the copper foil passes over the surface above the first input roller 2.

[0041] Please refer to the details. Figures 1-3 The second input roller 3 is rotatably connected inside the main body 1 of the device.

[0042] In this embodiment, the copper foil passes under the surface of the second input roller 3.

[0043] Please refer to the details. Figures 1-3 Multiple fixing plates 8 are fixedly connected to the surface of the main body 1 of the device, and the multiple fixing plates 8 are respectively connected to two coolers 9.

[0044] In this embodiment, the fixing plate 8 serves to fix the cooler 9.

[0045] It should be noted that the specific models of the first motor 5, the second motor 10, the cooler 9, and the electromagnetic induction coil used shall be selected by those skilled in the art. Furthermore, the first motor 5, the second motor 10, the cooler 9, and the electromagnetic induction coil mentioned above are all existing technologies and will not be elaborated upon in this solution.

[0046] The working principle and usage process of this utility model are as follows: When using this device, the ultra-thin copper foil passes sequentially through the surfaces of the first input roller 2, the heating roller 7, and the second input roller 3. Finally, the copper foil passes between the two traction rollers 4 and is pulled out of the device by the traction assembly. During this process, the copper foil passes through the lower surface of the heating roller 7. The electromagnetic induction coil inside the heating roller 7 is energized, and heat is transferred to the edge of the copper foil, heating the edge of the copper foil to be cut. The heat treatment adjusts the grain size and texture of the copper foil, improves its mechanical properties, and reduces the risk of tearing. The heat treatment also homogenizes the internal stress distribution of the copper foil, especially the stress concentration problem in the edge area, thereby reducing the possibility of tearing.

[0047] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for preventing the edges of ultra-thin copper foil from tearing, characterized in that, include: Device body (1); A traction assembly, which is disposed within the main body (1) of the device; The heat treatment assembly is provided in two sets. Each heat treatment assembly includes a heating roller (7) and a connecting rod. There are two heating rollers (7). The two heating rollers (7) are rotatably connected to the inner walls of the two sides of the main body (1) of the device. The connecting rod is fixedly connected to the close ends of the two heating rollers (7). Each of the heating rollers (7) is equipped with an electromagnetic induction coil; The cooler (9) is provided in two, and both coolers (9) are fixedly connected to the surface of the main body (1) of the device. The two coolers (9) are respectively connected to multiple heating rollers (7).

2. The device for preventing tearing of ultra-thin copper foil according to claim 1, characterized in that: The traction assembly includes a traction roller (4), a first motor (5), and a first gear (6). There are two traction rollers (4) and two first gears (6). The two traction rollers (4) are rotatably connected inside the main body (1) of the device. The two first gears (6) are respectively fixedly connected to the ends of the two traction rollers (4) and mesh with each other. The first motor (5) is fixedly connected to the surface of the main body (1) of the device. The output end of the first motor (5) is fixed to the end of one of the traction rollers (4).

3. The device for preventing tearing of ultra-thin copper foil according to claim 2, characterized in that: The surface of the main body (1) of the device is provided with a transmission assembly, which is connected to a plurality of heating rollers (7). The transmission assembly includes a second gear (11), a third gear (12), and a second motor (10). There are two second gears (11), which are fixedly connected to the ends of two of the heating rollers (7). The third gear (12) is rotatably connected to the surface of the main body (1) of the device and meshes with two of the second gears (11). The second motor (10) is fixedly connected to the surface of the main body (1), and the output end of the second motor (10) is fixed to the end of one of the heating rollers (7).

4. The device for preventing tearing of ultra-thin copper foil according to claim 3, characterized in that: The first input roller (2) is rotatably connected inside the main body (1) of the device.

5. The device for preventing tearing of ultra-thin copper foil according to claim 4, characterized in that: The device body (1) is rotatably connected to a second input roller (3).

6. The device for preventing tearing of ultra-thin copper foil according to claim 5, characterized in that: The surface of the main body (1) of the device is fixedly connected with multiple fixing plates (8), and the multiple fixing plates (8) are respectively connected to two coolers (9).

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