Production equipment of composite copper foil

Abstract

The utility model discloses production equipment of a composite copper foil, which can improve the binding force between production materials of the composite copper foil. The production equipment of the composite copper foil comprises a first unwinding device and a second unwinding device, wherein a gluing device and a pasting and pressing device are sequentially arranged between the first unwinding device and the second unwinding device; the first unwinding device is used for unwinding a base material, and the second unwinding device is used for unwinding a copper foil; an anti-oxidation device is further arranged behind the second unwinding device. Wherein the first unwinding device releases the base material to reach the gluing device, the base material reaches the pasting and pressing device after being glued by the gluing device, and the base material is pasted and pressed with the copper foil released by the second unwinding device at the pasting and pressing device; and the base material subjected to pasting and pressing is subjected to anti-oxidation treatment at the anti-oxidation device.

Description

Technical Field

[0001] The utility model relates to the field of automated production and manufacturing, in particular to production equipment for composite copper foil. Background Art

[0002] As a good alternative to traditional electrolytic copper foil, composite copper foil has the advantages of light weight, high safety and high energy density compared to traditional electrolytic copper foil. Composite copper foil uses polymer material as the substrate, and uses deposition methods such as magnetron sputtering and water electroplating to form a layer of metal copper film on the surface of the substrate. However, the production of composite copper foil faces the problem of poor bonding between the substrate and the film layer. Utility Model Content

[0003] In order to solve the above technical problems, the present utility model is proposed. The embodiment of the present utility model provides a production device for composite copper foil, which can improve the bonding force between composite copper foil production materials.

[0004] According to one aspect of the utility model, there is provided a production equipment for composite copper foil, comprising: a first unwinding device and a second unwinding device, wherein a gluing device and a pressing device are sequentially arranged between the first unwinding device and the second unwinding device; the first unwinding device is used for unwinding a substrate, and the second unwinding device is used for unwinding a copper foil; an anti-oxidation device is also arranged behind the second unwinding device; wherein, the first unwinding device releases the substrate to reach the gluing device, and after the substrate is glued by the gluing device, it reaches the pressing device, and the substrate is pressed with the copper foil released by the second unwinding device at the pressing device, and after the pressing is completed, the substrate is subjected to anti-oxidation treatment at the anti-oxidation device.

[0005] In one embodiment, the production equipment of the composite copper foil further includes: a pre-treatment device, which is arranged between the first unwinding device and the glue coating device, and is used to increase the roughness of the surface of the substrate released by the first unwinding device.

[0006] In one embodiment, the production equipment of the composite copper foil further includes: a first transfer roller, wherein the first transfer roller is arranged between the pre-treatment device and the glue coating device.

[0007] In one embodiment, the production equipment of the composite copper foil further includes: a baking device, which is arranged between the gluing device and the pressing device, and is used to bake the substrate after being glued by the gluing device.

[0008] In one embodiment, the production equipment of the composite copper foil further includes: a second transfer roller, wherein the second transfer roller is arranged between the glue coating device and the baking device.

[0009] In one embodiment, the production equipment of the composite copper foil further includes: a scraper device, wherein the scraper device is disposed between the glue coating device and the pressing device, and the scraper device is used to adjust the thickness of the glue coating layer coated on the substrate.

[0010] In one embodiment, the glue coating device includes special glue for copper foil, wherein the special glue for copper foil is any one of epoxy resin, silicone rubber, hot melt adhesive, and acrylate.

[0011] In one embodiment, the production equipment of the composite copper foil further includes: a third transfer roller, wherein the third transfer roller is arranged between the laminating device and the anti-oxidation device.

[0012] In one embodiment, the substrate includes a polymer foil, and the first unwinding device includes: a polymer foil unwinding roller, and the polymer foil unwinding roller is used to unwind the polymer foil; the second unwinding device includes a copper foil unwinding roller.

[0013] In one embodiment, the production equipment of the composite copper foil further includes: a winding roller, which is arranged behind the anti-oxidation device and is used to wind up the substrate after laminating the copper foil.

[0014] The production equipment of the composite copper foil provided by the utility model adopts a gluing method to make the polymer foil and the copper foil bonded, and the transmission between the mechanical rollers can realize the winding and unwinding of the composite foil, and the preparation of the composite copper foil can be realized by repeating again. In addition, in order to increase the bonding force between the substrate and the copper foil, a gluing device is provided. In order to prevent the surface of the copper foil from being oxidized by air, an anti-oxidation device is provided for anti-oxidation treatment. Compared with the traditional composite copper foil production equipment, the device has a simple process and avoids the use of methods such as magnetron sputtering and vacuum deposition that are too costly and have too low a yield rate. In addition, the device also solves the problem of poor bonding between the polymer foil and the metal foil to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other purposes, features and advantages of the present invention will become more apparent by describing the embodiments of the present invention in more detail in conjunction with the accompanying drawings. The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0016] Figure 1 It is a schematic structural diagram of a composite copper foil production device provided by an exemplary embodiment of the utility model.

[0017] Figure 2It is a structural schematic diagram of a composite copper foil production device provided by another exemplary embodiment of the utility model.

[0018] Explanation of the accompanying drawings: 1. first unwinding device; 2. pre-treatment device; 3. first transfer roller; 4. gluing device; 5. scraper device; 6. second transfer roller; 7. baking device; 8. pressing device; 9. second unwinding device; 10. third transfer roller; 11. anti-oxidation device; 12. winding roller. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Furthermore, in the exemplary embodiments, since the same reference numerals denote the same components having the same structure or the same steps of the same method, if one embodiment is exemplarily described, only structures or methods different from the described embodiment are described in other exemplary embodiments.

[0021] Throughout the specification and claims, when a component is described as being “connected” to another component, the component may be “directly connected” to the other component, or “electrically connected” to the other component through a third component. In addition, unless explicitly described to the contrary, the term “include” and its corresponding terms should be understood to include only the components described, and should not be understood to exclude any other components.

[0022] Figure 1 Schematic diagram of the structure of a composite copper foil production device provided by an exemplary embodiment of the utility model. Figure 1 As shown, the production equipment of composite copper foil includes: a first unwinding device 1 and a second unwinding device 9, between which a gluing device 4 and a pressing device 8 are sequentially arranged; the first unwinding device 1 is used for unwinding a substrate, and the second unwinding device 9 is used for unwinding a copper foil; an anti-oxidation device 11 is also arranged behind the second unwinding device 9; wherein, the first unwinding device 1 releases the substrate to reach the gluing device 4, and after the substrate is glued by the gluing device 4, it reaches the pressing device 8, and the substrate is pressed with the copper foil released by the second unwinding device 9 at the pressing device 8, and after the pressing is completed, the substrate is subjected to anti-oxidation treatment at the anti-oxidation device 11.

[0023] The first unwinding device 1 is used to unwind the substrate, which includes a polymer foil. The first unwinding device 1 may include: a polymer foil unwinding roller, which is used to unwind the polymer foil. The thickness of the polymer foil can be set to 4.5 μm. The alternative materials of the polymer foil are PET (polyethylene terephthalate), PP (polypropylene), etc. The second unwinding device 9 can be set as a copper foil unwinding roller, which is used to release the copper foil and attach it to the surface of the substrate to form a composite copper foil. The substrate and the copper foil are stored by rolling on the roller before use. When laminating, the substrate and the copper foil are released by the rotation of the roller to achieve smooth material addition. In order to increase the adhesion between the substrate and the copper foil, a gluing device 4 is provided, in which special glue for copper foil is stored. The material of the special glue for copper foil can be one of polymer adhesives such as epoxy resin, silicone rubber, and acrylate. In addition, hot melt adhesive can also be used for bonding. After the substrate passes through the gluing device 4, the special glue for copper foil is adhered to one side of the substrate. When the glued substrate passes through the laminating device 8, it is laminated with the copper foil released by the second unwinding device 9. The laminated substrate and copper foil enter the anti-oxidation device 11 for anti-oxidation treatment to prevent the surface of the copper foil from being oxidized by air, thereby completing the laminating of the copper foil on one side of the substrate.

[0024] Figure 2 : is a schematic diagram of the structure of a production device for composite copper foil provided by another exemplary embodiment of the present invention, such as Figure 2 As shown, at the end of the process, a winding roller 12 can be provided. The winding roller 12 is provided behind the anti-oxidation device 11. The winding roller 12 is used to wind up the substrate after laminating one side of the copper foil. At this time, the winding can be opposite to the side of the substrate when it is unrolled from the first unwinding device 1. Then the winding roller 12 is placed back at the beginning of the process, and the complete process is performed again to laminate the other side of the substrate, so that both sides of the substrate are laminated with copper foil, and the production of the finished composite copper foil is completed.

[0025] In one embodiment, if Figure 2 As shown, the production equipment of composite copper foil may also include: a pre-treatment device 2, which is arranged between the first unwinding device 1 and the glue coating device 4, and is used to increase the roughness of the surface of the substrate released by the first unwinding device 1.

[0026] Before the substrate is released from the first unwinding device 1 and enters the gluing device 4, a pre-treatment device 2 is set to add a pre-treatment process. The pre-treatment device 2 mainly grinds the surface of the polymer foil by mechanical processing means such as grinding wheel polishing to remove the flat layer of the surface and form roughness. The required roughness level can be controlled by selecting appropriate grinding particle size and grinding pressure. Or chemical corrosion means such as acid and alkali are used to remove the flat layer, thereby increasing the roughness of the surface of the polymer foil. Increasing the roughness of the surface of the polymer foil can increase the contact area and increase the contact density between materials, which helps to increase the friction of the contact surface and the adhesion between the surfaces, thereby improving the firmness and stability of the bonding. The rough surface can provide more microscopic anchor points and increase the mechanical locking effect between the bonding materials. This can improve the strength and durability of the bonding, reduce the relative movement and looseness between the materials, and the rough surface of the bonding material can improve the wettability, making it easier for liquids or adhesives to penetrate and diffuse into the surface microstructure, which helps to improve the effect of coating, gluing or bonding and enhance the adhesion between materials. When copper foil is laminated, the rough surface can increase the physical anchoring force between the copper foil and the substrate, which helps to improve the adhesion and durability of the copper foil and reduce the risk of peeling and flaking.

[0027] In one embodiment, if Figure 2 As shown, the production equipment of the composite copper foil may further include: a first transfer roller 3 , which is arranged between the pre-treatment device 2 and the glue coating device 4 .

[0028] The first transfer roller 3 is arranged between the pre-treatment device 2 and the glue coating device 4, and can play a transfer role, used to convey the polymer foil, and provides a smooth surface for the transportation of the polymer foil, so that the polymer foil can move smoothly on the production line, ensuring that the polymer foil maintains the correct position and direction during the transmission process, and is transmitted from the pre-treatment device 2 to the glue coating device 4. In addition, the first transfer roller 3 can play a supporting and guiding role therein, and maintain the stability of the polymer foil during transportation. The surface of the first transfer roller 3 can be set as a smooth surface, and made of low-friction material to reduce the friction of the polymer foil during the transmission process, and reduce the wear and consumption of the polymer foil. In addition, the first transfer roller 3 can also be used to adjust the tension of the polymer foil. By adjusting the position of the first transfer roller 3, the material tension can be controlled to meet production requirements.

[0029] In one embodiment, if Figure 2 As shown, the production equipment of the composite copper foil may further include: a baking device 7 , which is arranged between the gluing device 4 and the laminating device 8 , and is used to bake the base material after being glued by the gluing device 4 .

[0030] After the polymer foil is coated with glue, it enters the baking device 7 for baking, so that the glue on the surface of the polymer foil is melted and the viscosity of the glue is maximized, thereby improving the bonding force between the polymer foil and the metal foil.

[0031] In one embodiment, if Figure 2 As shown, the production equipment of the composite copper foil may further include: a second transfer roller 6 , which is arranged between the glue coating device 4 and the baking device 7 .

[0032] After the polymer foil is coated with glue, it is transferred through the second transfer roller 6 and then enters the baking device 7 for baking. Therefore, the second transfer roller 6 can also play a transfer role, which is used to transfer the polymer foil after the glue is coated, and provides a smooth surface for the transportation of the polymer foil, so that the polymer foil can move smoothly on the production line, ensuring that the polymer foil maintains the correct position and direction during the transmission process, and is transferred from the glue coating device 4 to the baking device 7. In addition, the second transfer roller 6 can play a supporting and guiding role, maintain the stability of the polymer foil during transportation, and prevent the coated glue from falling off. The surface of the second transfer roller 6 can be set as a smooth surface, made of low-friction material, so as to reduce the friction of the polymer foil during the transmission process, reduce the wear and consumption of the polymer foil. In addition, the second transfer roller 6 can also be used to adjust the tension of the polymer foil. By adjusting the position of the second transfer roller 6, the tension of the polymer foil can be controlled to prevent the coated glue from being offset due to the transportation angle of the polymer foil.

[0033] In one embodiment, if Figure 2 As shown, the production equipment of the composite copper foil may further include: a scraper device 5, which is arranged between the glue coating device 4 and the laminating device 8, and is used to adjust the thickness of the glue coating layer coated on the substrate.

[0034] The scraper device 5 is arranged after the glue coating device 4 and before the baking device 7, and is used to control the glue coating thickness. The gap between the scraper device 5 and the polymer foil determines the thickness of the glue coating layer. By adjusting the position and angle of the scraper, the thickness of the glue coating layer can be controlled to ensure the accuracy and consistency of the glue coating. The scraper device 5 can scrape off the excess glue from the glue coating roller. When the polymer foil passes through the scraper device 5, the scraper device 5 scrapes the excess glue back to the glue tank or the recycling system to avoid excessive glue coating and waste. The scraper device 5 can also make the surface of the glue coating layer flat. It can remove particles, pits or uneven glue coating on the polymer foil coating layer, making the surface of the glue coating layer smooth and uniform. In addition, the scraper device 5 can improve the efficiency of glue coating. By controlling the glue coating thickness and removing excess glue, the scraper device 5 can reduce the waste of glue and improve the utilization rate and production efficiency of glue coating.

[0035] In one embodiment, if Figure 2 As shown, the production equipment of the composite copper foil may further include: a third transfer roller 10 , and the third transfer roller 10 is arranged between the laminating device 8 and the anti-oxidation device 11 .

[0036] After the polymer foil and the copper foil are pressed, they are transferred by the third transfer roller 10 and enter the anti-oxidation device 11 for anti-oxidation treatment. Therefore, the third transfer roller 10 can play a transfer role, which is used to convey the polymer foil after the glue is applied, and provides a smooth surface for the transportation of the polymer foil, so that the polymer foil can move smoothly on the production line, ensuring that the polymer foil maintains the correct position and direction during the transmission process, and is transferred from the pressing device 8 to the anti-oxidation device 11. In addition, the third transfer roller 10 can play a supporting and guiding role therein, maintaining the stability of the polymer foil during transportation. The surface of the third transfer roller 10 can be set as a smooth surface, made of low-friction material, to reduce the friction of the polymer foil during the transmission process, and reduce the wear and consumption of the polymer foil. In addition, the third transfer roller 10 can also be used to adjust the tension of the polymer foil. By adjusting the position of the third transfer roller 10, the control of the tension of the polymer foil can be achieved.

[0037] In one embodiment, if Figure 2 As shown, the production equipment of the composite copper foil may include in sequence: a first unwinding device 1, a pre-treatment device 2, a first transfer roller 3, a gluing device 4, a scraper device 5, a second transfer roller 6, a baking device 7, a pressing device 8, a second unwinding device 9, a third transfer roller 10, an anti-oxidation device 11 and a winding roller 12.

[0038] Among them, in the production equipment of the composite copper foil, the production process of the composite copper foil is as follows: the polymer foil is released from the polymer foil unwinding roller (the first unwinding device 1), and the roughness of the current bonding surface of the polymer foil is improved by the pre-treatment device 2. After the pre-treatment is completed, the polymer foil passes through the first transfer roller 3 and enters the glue coating device 4. When passing through the glue coating device 4, the colloid adheres to the current bonding surface of the polymer foil. After the glue coating treatment, the polymer foil passes through the scraper device 5, and the scraper device 5 flattens the glue coating layer, adjusts the thickness of the glue coating layer, and then passes through the second transfer roller 6 for transfer, and enters the baking device 7 area to bake the glue coating layer, so that the glue on the surface of the polymer foil is melted and the viscosity of the glue is maximized. The baked polymer foil will pass through the laminating device 8 and be laminated with the copper foil on the surface of the copper foil unwinding roller (the second unwinding device 9). After the laminated composite foil is transferred by the third transfer roller 10, it will immediately pass through the anti-oxidation device 11 for anti-oxidation treatment to prevent the copper foil surface from being oxidized by air, and then be reeled by the reeling roller 12 to complete the single-sided production of the composite copper foil. The composite foil in the semi-finished state at this time repeats the above steps again to complete the production of the finished composite copper foil.

[0039] The production equipment of composite copper foil provided by the utility model adopts the method of gluing to make the polymer foil and the copper foil be bonded, and the transmission between each mechanical roller can realize the winding and unwinding of the composite foil, and the preparation of the composite copper foil can be realized by repeating again. In order to increase the bonding force between the substrate and the copper foil, a gluing device is provided, and in order to prevent the surface of the copper foil from being oxidized by air, an anti-oxidation device is provided for anti-oxidation treatment. In addition, the addition of the pre-treatment process and the baking process can greatly improve the roughness and activity of the surface of the polymer foil, give full play to the viscosity of the colloid, and solve the problem of poor bonding between the polymer foil and the metal foil. Compared with the traditional composite copper foil production equipment, the device has a simple process, avoids the use of methods such as magnetron sputtering and vacuum deposition that are too costly and have too low a yield rate, and in addition, the device also solves the problem of poor bonding between the polymer foil and the metal foil to a certain extent.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A production equipment for composite copper foil, characterized in that: include: A first unwinding device (1) and a second unwinding device (9), wherein a gluing device (4) and a laminating device (8) are sequentially arranged between the first unwinding device (1) and the second unwinding device (9); the first unwinding device (1) is used for unwinding a substrate, and the second unwinding device (9) is used for unwinding a copper foil; An anti-oxidation device (11) is also provided behind the second unwinding device (9); The first unwinding device (1) releases the substrate to reach the gluing device (4), and after being glued by the gluing device (4), the substrate reaches the pressing device (8), and the substrate is pressed with the copper foil released by the second unwinding device (9) at the pressing device (8). After the pressing is completed, the substrate is subjected to anti-oxidation treatment at the anti-oxidation device (11).

2. The production equipment of composite copper foil according to claim 1, characterized in that: The production equipment of the composite copper foil also includes: A pre-treatment device (2), the pre-treatment device (2) is arranged between the first unwinding device (1) and the glue coating device (4), and the pre-treatment device (2) is used to increase the roughness of the surface of the substrate released by the first unwinding device (1).

3. The production equipment of composite copper foil according to claim 2, characterized in that: The production equipment of the composite copper foil also includes: A first transfer roller (3), wherein the first transfer roller (3) is arranged between the pre-treatment device (2) and the glue coating device (4).

4. The production equipment of composite copper foil according to claim 1, characterized in that: The production equipment of the composite copper foil also includes: A baking device (7), wherein the baking device (7) is arranged between the gluing device (4) and the pressing device (8), and the baking device (7) is used to bake the substrate after being glued by the gluing device (4).

5. The production equipment of composite copper foil according to claim 4, characterized in that: The production equipment of the composite copper foil also includes: A second transfer roller (6), wherein the second transfer roller (6) is arranged between the gluing device (4) and the baking device (7).

6. The production equipment of composite copper foil according to claim 1, characterized in that: The production equipment of the composite copper foil also includes: A scraper device (5), the scraper device (5) is arranged between the glue coating device (4) and the pressing device (8), and the scraper device (5) is used to adjust the thickness of the glue coating layer coated on the substrate.

7. The production equipment of composite copper foil according to claim 1, characterized in that: The glue coating device (4) comprises special glue for copper foil, wherein the special glue for copper foil is any one of epoxy resin, silicone rubber, hot melt glue, and acrylate.

8. The production equipment of composite copper foil according to claim 1, characterized in that: The production equipment of the composite copper foil also includes: A third transfer roller (10), wherein the third transfer roller (10) is arranged between the pressing device (8) and the anti-oxidation device (11).

9. The production equipment of composite copper foil according to claim 1, characterized in that: The substrate comprises a polymer foil, and the first unwinding device (1) comprises: a polymer foil unwinding roller, the polymer foil unwinding roller is used to unwind the polymer foil; the second unwinding device (9) comprises a copper foil unwinding roller.

10. The production equipment of composite copper foil according to claim 1, characterized in that: The production equipment of the composite copper foil also includes: A winding roller (12), the winding roller (12) is arranged behind the anti-oxidation device (11), and the winding roller (12) is used to wind up the substrate after the copper foil is laminated.

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