A vertical high-speed electroplating equipment suitable for composite copper foil

Abstract

The present invention provides a vertical high-speed electroplating device suitable for composite copper foil, comprising a plurality of parallelly arranged electroplating cell groups, a guide roller group arranged on one side above each electroplating cell group for transferring copper foil and a first conductive roller on the other side for driving the transfer of the copper foil, and a power assist assembly arranged on the electroplating cell group and located on the side of the first conductive roller away from the guide roller group for transferring the copper foil. The power assist assembly can cooperate with the first conductive roller to provide a transfer assist for the copper foil, and at the same time, a lifting rod can be used to push the power assist roller group at its output end to slide along the slide groove track on the sliding arm to change the contact surface between the copper foil and the roller structure, so as to reduce the friction between the copper foil and the roller structure and thus reduce the transfer tension, thereby ensuring the stability of the high-speed transfer process of the copper foil.

Description

Technical Field

[0001] The present invention relates to the technical field of composite copper foil production and processing, and in particular to a vertical high-speed electroplating device suitable for composite copper foil. Background Art

[0002] Electrolytic copper foil, as the negative electrode current collector, is a crucial component of power and energy storage batteries. To reduce battery cell costs and increase battery energy density, thinner and lighter electrolytic copper foil is required. Consequently, the need to develop high-strength, thinner, and more uniform electrolytic copper foil is becoming increasingly urgent. Due to limitations in the physical properties of copper foil, process equipment, and downstream applications, the thickness of pure copper foil has a limit. Composite copper foil is a sandwich structure consisting of a polymer core layer and two outer copper layers. The polymer core layer serves as the support material, while the thin copper layers on either side serve as the negative electrode current collector. Compared to pure copper foil, this composite copper foil structure allows for a thinner copper layer while maintaining the same overall thickness. This not only meets the copper foil material requirements of downstream power and energy storage battery manufacturing equipment, but also reduces the battery's copper usage and weight, thereby saving costs and increasing the battery's specific energy density.

[0003] The processing technology of composite copper foil on the market is mainly as follows: magnetron sputtering or vacuum evaporation is used on the surface of substrates made of polymer materials such as PET, PP, and PI to make a copper metal seed layer, metallizing the surface of the polymer substrate with poor conductivity to improve the conductivity. The metal layer is then thickened by water electroplating to produce a composite copper foil with a total thickness that meets the requirements, which is used to replace the traditional electrolytic copper foil. The current thickening methods mainly include horizontal water electroplating or vertical water electroplating. The main process is to place the product to be electroplated in a chemical electroplating solution, and deposit metallic copper on the seed layer through electroplating to thicken the copper layer.

[0004] However, existing vertical electroplating thickening devices only feature conductive rollers on one side of the copper foil, making them incapable of meeting the requirements for double-sided electroplating thickening for composite copper foils with an insulating core structure. Furthermore, the thin conductive copper layer on the surface of the composite copper foil results in high surface resistance and fragile copper films. During the electroplating process, the surface copper layer generates a large amount of heat instantaneously. Conventional electroplating tanks are filled with plating solution, and the plating solution between the cathode and anode is slowly replenished, resulting in poor heat and mass transfer. During high-current density and high-speed electroplating, the copper film on the surface of the composite copper foil generates a large amount of heat, resulting in a lack of copper ions at the interface. This not only severely impacts the electroplating effect but also easily causes thermal expansion and shedding of the copper film, and even thermal deformation of the composite copper foil as a whole. Furthermore, because the composite copper foil cannot withstand significant tension and the electroplating process is relatively slow, the transmission tension exerted on the copper foil by the roller structure of conventional vertical electroplating equipment is relatively small. However, the friction between the multiple roller structures remains constant, resulting in a smaller transmission tension than the frictional force. This can cause mechanical jamming, transmission interruptions, and even breakage of the copper foil, making vertical electroplating of the composite copper foil difficult. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a vertical high-speed electroplating equipment suitable for composite copper foil, so as to solve the problems in the prior art that the vertical electroplating thickening device cannot meet the double-sided electroplating requirements of the composite copper foil, the plating speed is difficult to increase, and the running speed of the composite copper foil does not match the equipment transmission.

[0006] According to an embodiment of the present invention, a vertical high-speed electroplating device for composite copper foil is used for copper plating the surface of a thin film to form copper foil. It is characterized in that the vertical high-speed electroplating device for composite copper foil includes a plurality of parallel electroplating cell groups, a second conductive roller for transferring the copper foil on one side and a first conductive roller for driving the transfer of the copper foil on the other side, which are respectively arranged above each group of the electroplating cell groups, and a power assist assembly for transferring the copper foil, which is arranged on the electroplating cell group and close to the first conductive roller on one side, and each second conductive roller is correspondingly provided with at least one transition assembly on the top;

[0007] The electroplating cell group includes an electroplating cell, a submerged roller movably arranged in the electroplating cell for transferring the copper foil, and an electroplating component embedded in the electroplating cell and located on both the inner and outer sides of the copper foil transfer path;

[0008] The electroplating assembly includes multiple vertically arranged anode plates and spray pipe groups inserted between the multiple anode plates, and the output directions of the two spray pipe groups correspond to the inner and outer sides of the copper foil respectively;

[0009] The power assist assembly includes a fixed platform fixedly connected to one side of the electroplating tank, slide arms fixedly arranged on both sides of the top of the fixed platform, two power assist roller groups passing through the slide arms for transferring the copper foil, a driving member arranged on one side of the two power assist roller groups, and a lifting rod arranged at the bottom of the slide arms;

[0010] The two assist roller groups are driven to rotate relative to each other by the driving member, so as to drive the copper foil to be transferred between the two assist roller groups.

[0011] Furthermore, a slide groove is provided on the slide arm for accommodating part of the assist roller group, and the assist roller group is driven to slide along the slide groove track by the lifting rod to adjust the conduction path and contact surface of the copper foil between the two assist roller groups and between the first conductive roller and the transition assembly.

[0012] Furthermore, the assist roller group includes an assist roller connected to the driving member, a limiting sleeve sleeved on both sides of the assist roller and abutting against the sliding arm, and a movable shaft sleeve sleeved on the surface of the limiting sleeve and connected to the output end of the lifting rod.

[0013] Furthermore, the driving member includes a motor, a driving tooth connected to the side of the motor away from the power-assisting roller, driven teeth respectively connected to both sides of the driving tooth, and a transmission assembly for connecting the driven teeth and the power-assisting roller.

[0014] Furthermore, the transmission assembly includes a first transmission member arranged on the side of the driven tooth facing the power-assisting roller, an output member arranged on the side of the power-assisting roller facing the driven tooth, and a second transmission member for connecting the first transmission member and the output member.

[0015] Furthermore, the second transmission member can slide between the first transmission member and the output member, approaching or moving away from the first transmission member.

[0016] Furthermore, the transition assembly includes a driving rod and a transition roller group fixedly arranged at the output end of the driving rod.

[0017] Furthermore, the transition roller group includes a fixed seat connected to the output end of the drive rod, a fixed frame fixedly arranged on the fixed seat away from the output end of the drive rod, and a transition roller movably arranged on one end of the fixed frame away from the fixed seat.

[0018] Furthermore, a squeezing roller is provided on a side of the second conductive roller away from the first conductive roller, and the squeezing roller abuts against an outer surface of the second conductive roller and rotates relatively thereto.

[0019] Compared with the prior art: the present invention proposes a vertical high-speed electroplating equipment suitable for composite copper foil. When the copper foil is wound around the power-assist assembly, the first conductive roller, the electroplating tank group, the second conductive roller and the transition roller in sequence for slow transfer electroplating, the first conductive roller has insufficient conductive pulling force on the copper foil. Then, by turning on the driving part on the power-assist assembly, the driving part drives the power-assist roller group to rotate, and cooperates with the first conductive roller to provide transfer assistance to the copper foil. When the copper foil is in the process of high-speed transmission, its surface will generate a higher temperature. The spray pipe group can be used to spray a large flow of electroplating solution toward the electroplating surface of the copper foil to ensure that the electroplating surface of the copper foil can fully contact with the electroplating solution, so as to achieve the effect of contact between the anode and cathode of the copper foil. The purpose of filling the electroplating solution is to use a fluid electroplating solution to cool the surface of the copper foil while electroplating it, thereby enhancing heat and mass transfer to prevent the copper foil from overheating, deformation or breakage. Based on the power assist assembly, the operator can also control the lifting rod through the controller to push the power assist roller group at its output end to slide along the slide track on the slide arm to change the contact surface between the copper foil and the roller structure, so as to reduce the friction between the copper foil and the roller structure and thus reduce the transmission tension, ensuring the stability of the copper foil transmission process, and solving the problems of the current vertical electroplating thickening equipment, the difficulty in increasing the plating speed, and the mismatch between the running speed of the composite copper foil and the equipment transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the principle structure of a vertical high-speed electroplating device for composite copper foil in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of a portion of the structure of a power assist assembly suitable for vertical high-speed electroplating equipment for composite copper foil in the first embodiment of the present invention;

[0022] Figure 3 Schematic diagram of a partial cross-sectional structure of a power assist assembly suitable for vertical high-speed electroplating equipment for composite copper foil in the first embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the enlarged structure of point A in the vertical high-speed electroplating equipment for composite copper foil in the first embodiment of the present invention;

[0024] Figure 5 Schematic diagram of a portion of the structure of a transition assembly suitable for vertical high-speed electroplating equipment for composite copper foil in the first embodiment of the present invention;

[0025] Figure 6 This is a partial structural diagram of a transition roller group suitable for use in a composite copper foil vertical high-speed electroplating device according to the first embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the copper foil transfer state in the composite copper foil vertical high-speed electroplating equipment in the first embodiment of the present invention.

[0027] Description of main component symbols:

[0028]

[0029]

[0030] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0031] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] See also Figures 1 to 7 , shown is a vertical high-speed electroplating device for composite copper foil in an embodiment of the present invention, which is used for copper plating the surface of a thin film to form copper foil 9. The vertical high-speed electroplating device for composite copper foil includes a plurality of parallel electroplating pool groups, a second conductive roller 5 for transferring copper foil 9 on one side above each electroplating pool group, and a first conductive roller 4 for driving the transfer of copper foil 9 on the other side, wherein the second conductive roller 5 also has a driving effect on the copper foil 9, and an assist assembly for transferring copper foil 9 arranged on the electroplating pool group and close to the side of the first conductive roller 4. At least one transition assembly 8 is correspondingly arranged on the top of each second conductive roller 5. The electroplating pool group includes an electroplating pool 1, a submerged roller 2 movably arranged in the electroplating pool 1 for transferring copper foil 9, and a roller embedded in the electroplating pool. 1 and located on the inner and outer sides of the copper foil 9 transfer path, the electroplating assembly 3 includes a plurality of vertically arranged anode plates 31, and a spray pipe group 32 interspersed between the plurality of anode plates 31, the output directions of the two spray pipe groups 32 correspond to the inner and outer sides of the copper foil 9 respectively, the power-assisting assembly 7 includes a fixed platform 71 fixedly connected to one side of the electroplating tank 1, a slide arm 72 fixedly arranged on both sides of the top of the fixed platform 71, two power-assisting roller groups 74 for transferring the copper foil 9 through the slide arm 72, and a driving member 75 arranged on one side of the two power-assisting roller groups 74, wherein the two power-assisting roller groups 74 are driven to rotate relative to each other by the driving member 75 to drive the copper foil 9 to be transferred between the two power-assisting roller groups 74, and at least one transition assembly 8 is correspondingly provided on the top of each second conductive roller 5.

[0034] Furthermore, the assist assembly 7 further includes a lifting rod 76 provided at the bottom of the slide arm 72. The slide arm 72 is provided with a slide groove 73 for accommodating part of the assist roller group 74. The lifting rod 76 drives the assist roller group 74 to slide along the track of the slide groove 73, so as to adjust the conductive path and contact surface of the copper foil 9 between the two assist roller groups 74 and between the first conductive roller 4 and the transition assembly 8. In some optional embodiments of the present invention, the lifting rod 76 can be an electric lifting rod, a cylinder or a hydraulic lifting rod. The assist roller group 74 includes a lifting rod connected to the driving member 75. The auxiliary roller 741, the limiting sleeve 742 set on both sides of the auxiliary roller 741 and abutting against the sliding arm 72, and the movable shaft sleeve 743 set on the surface of the limiting sleeve 742 and connected to the output end of the lifting rod 76, wherein the movable shaft sleeve 743 can complete the docking with the lifting rod 76 without affecting the subsequent axial rotation of the auxiliary roller 741, and the driving member 75 includes a motor 751, a driving tooth 752 connected to the side of the motor 751 away from the auxiliary roller 741, and driven teeth 753 respectively connected to both sides of the driving tooth 752, and The transmission assembly for connecting the driven gear 753 and the power roller 741 includes a first transmission member 754 provided on the side of the driven gear 753 facing the power roller 741, an output member 756 provided on the side of the power roller 741 facing the driven gear 753, and a second transmission member 755 for connecting the first transmission member 754 and the output member 756. In some optional embodiments of the present invention, the second transmission member 755 can be driven by a cylinder or an electric push rod so that the second transmission member 755 can be controlled to move closer to or away from the first transmission member. 754 and the output member 756. It should be noted that when the second transmission member 755 is not in contact with the first transmission member 754 and the output member 756, the driving member 75 cannot drive the assisting roller 741 connected thereto to rotate, so that the assisting roller 741 is in a self-rotating state, and its function is the same as that of the guide roller group 6. When the second transmission member 755 moves toward the first transmission member 754 and the output member 756 and is connected, the assisting roller group 74 is connected to the driving member 75, so that the assisting roller group 74 can provide assistance in the subsequent transmission of the copper foil 9.

[0035] Furthermore, the transition assembly 8 includes a driving rod 81 and a transition roller group 82 fixedly arranged at the output end of the driving rod 81. The transition roller group 82 includes a fixed seat 821 connected to the output end of the driving rod 81, a fixed frame 822 fixedly arranged on the fixed seat 821 away from the output end of the driving rod 81, and a transition roller 823 movably arranged on one end of the fixed frame 822 away from the fixed seat 821. The transition roller 823 can ensure the tension of the copper foil between the second conductive roller 5 and the power assist assembly 7.

[0036] During the specific implementation, before the water electroplating operation, the operator can first unfold one side of the copper coil curled after the magnetron sputtering treatment, and lead it out in sequence along the leftmost side of the vertical high-speed electroplating equipment suitable for composite copper foil, winding it around the assist assembly 7, the first conductive roller 4, the electroplating tank group, the second electroplating roller 5 to the transition roller 8. In addition, the operator can add electroplating liquid to the electroplating tank 1 in sequence according to the electroplating needs of the copper foil 9 or adopt the form of spray electroplating. It should be noted that the assist assembly 7, the first conductive roller 4, the electroplating tank group, the second electroplating roller 5 to the transition roller 8 are the components that the copper foil 9 needs to pass through to complete one electroplating, and are also determined as the first to Nth electroplating components, and the copper foil 9 arranges the conduction path as shown in the figure in the specification. Figure 1 As shown, in order to ensure that the thickness of the electroplating layer meets the production requirements, in some optional embodiments, the vertical high-speed electroplating equipment for composite copper foil of the present application can be composed of multiple groups of components that complete one electroplating in parallel. For example, the thickness of the copper foil 9 after each electroplating is 1 μm, and the total electroplating thickness is required to be 6 μm, then the above components that complete one electroplating need to be arranged in parallel to set up six groups.

[0037] In addition, when the copper foil 9 is in the process of high-speed transmission, its surface will generate a high temperature. In order to avoid the copper foil 9 from being deformed or broken due to heat caused by excessive temperature, the surface of the copper foil 9 can be electroplated by means of the segmented anode plate 31 provided on the electroplating assembly 3 and the spray pipe group 32 interspersed between the anode plates 31. Specifically, in this process, the electroplating tank 1 may not be loaded with electroplating solution, and the spray pipe group 32 can be relied upon to spray a large flow of electroplating solution toward the electroplating surface of the copper foil 9 to ensure that the electroplating surface of the copper foil 9 can be fully in contact with the electroplating solution, so as to achieve the filling of the electroplating solution between the anode and cathode of the copper foil 9. The purpose is to use a fluid electroplating solution to cool the surface of the copper foil 9 while electroplating the surface of the copper foil 9, thereby enhancing heat and mass transfer to avoid overheating, deformation or breakage of the copper foil 9. At the same time, in some optional embodiments of the present invention, a set of circulating condensing equipment can be connected to the bottom of the electroplating tank 1 to cool the electroplating solution after spraying and then circulate it into the spray pipe group 32 to perform the spray electroplating operation on the surface of the copper foil 9.

[0038] Furthermore, the operator can control the first conductive roller 4 to be turned on, wherein the first conductive roller 4 and the second conductive roller 5 serve as the main transmission power source of the copper foil 9 and are used to drive the movement of the copper foil 9. It should be noted that the first conductive roller 4 and the second conductive roller 5 are respectively provided with drive motors in their axial directions, and the drive motors drive the first conductive roller 4 and the second conductive roller 5 to rotate along their own axial directions, thereby driving the copper foil 9 on its surface to be transferred and electroplated on the vertical high-speed electroplating equipment suitable for composite copper foil, and the double-roller transmission of the first conductive roller 4 and the second conductive roller 5 can ensure the stability of the transmission of the copper foil 9 while increasing the transmission speed. In addition, the contact parts of the first conductive roller 4 and the second conductive roller 5 with the copper foil 9 can be made of conductive metal materials, and a conductive sheet is also connected to the side away from the axial direction of the drive motor to make the first conductive roller 4 and the second conductive roller 5 rotate along their own axial directions. A conductive roller 4 and a second conductive roller 5 are charged themselves, so that the copper foil 9 in contact with its outer surface is charged during the transfer process for the subsequent electroplating operation of the copper foil 9. Afterwards, the first conductive roller 4 applies electricity to the surface of one side of the copper foil 9 while driving it to transfer, while the second conductive roller 5 applies electricity to the surface of the other side of the copper foil 9. The electrified copper foil 9 is conducted by the first conductive roller 4 into the electroplating tank 1 and assisted by the submerged roller 2 to the second conductive roller 5. In this process, the copper foil 9 is electroplated by the electroplating liquid in the electroplating tank 1 and the provided electroplating assembly 3. The electroplating principle is understandable to those skilled in the art and will not be elaborated here. In order to take into account the electroplating operation on both sides of the copper foil 9, two electroplating assemblies 3 distributed on the inner and outer sides of the transfer path of the copper foil 9 are provided in the electroplating tank 1, such as Figure 1As shown, the electroplating operation can be effectively performed on the inner and outer sides of the copper foil 9 at the same time. Then, the copper foil 9 is driven by the first conductive roller 4, passes through the bottom submerged roller 2 in sequence, and then rises to the second conductive roller 5 to achieve the purpose of vertical transfer electroplating. The purpose is to save the space consumption required in the electroplating process, and reduce the floor space while not affecting the electroplating operation of the vertical high-speed electroplating equipment suitable for composite copper foil. After that, the copper foil 9 is transferred along the second conductive roller 5 to the transition assembly 8 to generate tension in the transfer process of the copper foil 9, which can effectively unfold the copper foil 9. It should be noted that since the copper foil 9 is in contact between the second conductive roller 5 and the transition roller 823 on the transition assembly 8, a relative friction force is generated during the transfer process, and the friction force acts on the surface of the copper foil 9 to A certain tension is formed on the surface to make it unfold smoothly, so as to ensure the flatness of subsequent electroplating, and there is also contact between the copper foil 9 and the first conductive roller 4, the submerged roller 2 and the second conductive roller 5, which well ensures that the copper foil 9 is affected by the tension generated by the transmission of the roller structure in the above transmission path, further ensuring that the copper foil 9 is transmitted flat. Then, in some optional embodiments of the present invention, when the copper foil 9 undergoes the first electroplating and enters the second electroplating component, a flushing nozzle can be provided between the first electroplating component and the second electroplating component to remove the previous electroplating liquid remaining on the surface of the copper foil 9, so as to ensure the cleanliness of the copper foil 9 when entering the subsequent electroplating link and improve the electroplating quality. At the same time, the flushing process can also implement a cooling treatment on the surface of the copper foil 9.

[0039] In a further specific implementation, since the copper foil 9 needs to ensure the uniformity of its surface electroplating during the electroplating process, the driving speed of the first conductive roller 4 needs to be reduced and adjusted accordingly, and the driving force generated by the first conductive roller 4 rotating at a low speed on the copper foil 9 is relatively reduced. For example, the transmission force required for the copper foil 9 in each set of electroplating components is 20N. This transmission force is the friction generated by the contact with different rollers during the transmission of the copper foil 9, and the transmission force generated by the first conductive roller 4 at a speed of 10cm / s is 25N. In this state, the copper foil 9 will not be stuck or jammed. In order to ensure the uniformity of the electroplating of the copper foil 9, the current density of the water electroplating cannot be too large and the conduction speed of the first conductive roller 4 cannot be too fast. Therefore, the first conductive roller 4, which was originally 1 The transmission state of 0cm / s is adjusted to 3cm~5cm / s, and the corresponding transmission force is 10N~15N. Under this transmission force, the minimum 20N pulling force requirement for pulling the copper foil 9 is not met, resulting in the copper foil 9 being stuck and frustrated during the transmission process. Therefore, the power assist assembly 7 can be controlled to assist the copper foil 9 located between the first conductive roller 4 and the guide roller group 6 and adjust the conduction angle of the copper foil 9 to improve the stability of the copper foil 9 during the transmission process. In some optional embodiments of the present invention, a controller for controlling the vertical high-speed electroplating equipment for composite copper foil can be provided at a position convenient for operators to use on the vertical high-speed electroplating equipment for composite copper foil, wherein the controller can include an MCU (Microcontroller). llerUnit; micro control unit) chip, which is suitable for adjusting various devices in the composite copper foil vertical high-speed electroplating equipment through the MCU chip. Specifically, in order to ensure the uniformity of electroplating on the surface of the copper foil 9, the operator can adjust the speed of the first conductive roller 4 through the controller to slow down the transmission of the copper foil 9. At the same time, the power assist assembly 7 is controlled by the controller to respectively control the motor 751 and the second transmission member 755 on the start-up drive member 75, so that the motor 751 rotates and outputs. At the same time, the second transmission members 755 on both sides of the motor 751 are driven by cylinders or electric push rods to move and connect toward the first transmission member 754 and the output member 756, and the motor 751 drives the active gear 752 at its output end and the active gears 752 on both sides of the active gears in turn. The driven teeth 753, the first transmission member 754, the second transmission member 755, the output member 756 and the assist roller 741 in contact with the copper foil 9 rotate. During this process, the output speed of the motor 751 can be adjusted to the same speed as the first conductive roller 4. In some optional embodiments, an encoder can be installed on the first conductive roller 4 to obtain the speed data of the first conductive roller 4 in real time and transmit it to the controller. The controller then reads the speed information fed back by the encoder and controls the motor 751 to output the same speed in real time, which is convenient for the operator to control and adjust. At the same time, after the second transmission member 755 is separated from the first transmission member 754 and the output member 756, the assist roller 741 can also act as the guide roller group 6 to ensure the tension of the copper foil 9 during the transmission process.

[0040] In a further specific implementation, in order to ensure uniform tension at all locations during the transfer of the copper foil 9, the operator can also control the opening of the driving rod 81 on the transition assembly 8 through the controller. In some optional embodiments, the driving rod 81 can be an electric telescopic rod, a hydraulic telescopic rod or a cylinder to push the transition roller group 82 connected to its output end toward or away from the second conductive roller 5, so as to adjust the transfer angle of the copper foil 9 between the transition roller 823 and the second conductive roller 5, thereby improving the smooth transfer of the copper foil 9. In addition, the transition roller 823 and the second conductive roller 5 are staggered, which can make the copper foil 9 and the second conductive roller 5 staggered. The contact portion of the conductive roller 5 forms an angle to ensure full contact between the copper foil 9 and the second conductive roller 5. In addition, in order to remove the residual plating liquid on the surface of the copper foil 9 and avoid affecting the subsequent electroplating quality of the copper foil 9, the electroplating liquid remaining on the surface of the electroplated copper foil 9 can be squeezed by the squeezing roller 6 set on one side of the second conductive roller 5 to ensure the surface cleanliness of the copper foil 9 during subsequent electroplating and improve the electroplating quality. At the same time, the driving rod 81 can drive the transition roller group 82 to move toward or away from the second conductive roller 5, so that its internal space is adjustable, which is also convenient for the subsequent replacement of the second conductive roller 5 and the squeezing roller 6.

[0041] At the same time, in order to further improve the smoothness of the copper foil 9 during the transfer process, based on the power assist assembly 7, the operator can also control the lifting rod 76 through the controller to push the power assist roller group 74 at its output end to slide along the track of the slide groove 73 on the slide arm 72 to change the contact between the copper foil 9 and the roller structure, thereby reducing the large pulling force generated by friction during the transfer of the copper foil 9. Specifically, when the power assist roller 741 moves up to the position shown in the figure in the specification, Figure 7 After reaching the position shown, the copper foil 9 passing between the assisting roller 741 and the first conductive roller 4 is in a horizontal state, so that the path between the assisting roller 741 and the first conductive roller 4 is shortened. At the same time, in the horizontal state, the contact area between the assisting roller 741 and the first conductive roller 4 and the copper foil 9 is significantly reduced. Therefore, when the copper foil 9 passes through the assisting roller 741 and the first conductive roller 4, the contact area during the transfer process is reduced without affecting its normal transfer, so as to reduce the friction between the copper foil 9 and the roller structure and thus reduce the transfer tension. In addition, in some optional embodiments of the present invention, the lifting rod 76 can be connected to the first conductive roller 4 through a controller, and the assisting position of the assisting roller group 74 on the slide arm 72 can be adjusted accordingly according to the current transfer speed of the first conductive roller 4, so as to ensure the transfer stability of the copper foil 9 at different transfer speeds in real time.

[0042] In summary, when the copper foil 9 is sequentially wound around the power-assisting assembly 7, the first conductive roller 4, the electroplating tank group, the second conductive roller 5 to the transition roller 8 for slow transfer electroplating, the first conductive roller 4 has insufficient conductive pulling force on the copper foil 9. Then, by turning on the driving member 75 on the power-assisting assembly 7, the driving member 75 drives the power-assisting roller group 74 to rotate, and cooperates with the first conductive roller 4 to provide transfer assistance to the copper foil 9. When the copper foil 9 is in the process of high-speed transmission, its surface will generate a higher temperature. The spray pipe group 32 can be relied on to spray a large flow of electroplating solution toward the electroplating surface of the copper foil 9 to ensure that the electroplating surface of the copper foil 9 can be fully in contact with the electroplating solution, so as to achieve the filling of the electroplating solution between the anode and cathode of the copper foil 9. The invention is characterized in that a fluid electroplating solution is used to cool the surface of the copper foil 9 while electroplating the surface of the copper foil 9, thereby enhancing heat exchange and mass transfer to prevent the copper foil 9 from being overheated, deformed or broken. Based on the power assist assembly 7, the operator can also control the lifting rod 76 through the controller to push the power assist roller group 74 at its output end to slide along the track of the slide groove 73 on the slide arm 72 to change the contact surface between the copper foil 9 and the roller structure, so as to reduce the friction between the copper foil 9 and the roller structure and thus reduce the transmission tension, thereby ensuring the stability of the copper foil 9 transmission process, and solving the problems of the current vertical electroplating thickening equipment, the difficulty in increasing the plating speed, and the mismatch between the running speed of the composite copper foil and the equipment transmission.

[0043] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0044] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A vertical high-speed electroplating device for composite copper foil, used for copper plating the surface of a film to form copper foil, characterized in that: The vertical high-speed electroplating equipment for composite copper foil includes a plurality of parallel electroplating cell groups, a second conductive roller for transferring the copper foil and a first conductive roller for driving the transfer of the copper foil, which are respectively arranged above each electroplating cell group on one side and close to the first conductive roller on the other side, and a power assist assembly for transferring the copper foil, which is arranged on the electroplating cell group and close to the first conductive roller, and at least one transition assembly is correspondingly arranged on the top of each second conductive roller. The electroplating cell group includes an electroplating cell, a submerged roller movably arranged in the electroplating cell for transferring the copper foil, and an electroplating component embedded in the electroplating cell and located on both the inner and outer sides of the copper foil transfer path; The electroplating assembly includes multiple vertically arranged anode plates and spray pipe groups inserted between the multiple anode plates, and the output directions of the two spray pipe groups correspond to the inner and outer sides of the copper foil respectively; The power assist assembly includes a fixed platform fixedly connected to one side of the electroplating tank, slide arms fixedly arranged on both sides of the top of the fixed platform, two power assist roller groups passing through the slide arms for transferring the copper foil, a driving member arranged on one side of the two power assist roller groups, and a lifting rod arranged at the bottom of the slide arms; The driving member drives the two assist roller groups to rotate relative to each other, thereby driving the copper foil to be transferred between the two assist roller groups; The power-assist roller assembly includes a power-assist roller connected to the driving member, a limiting sleeve sleeved on both sides of the power-assist roller and abutting against the sliding arm, and a movable shaft sleeve sleeved on the surface of the limiting sleeve and connected to the output end of the lifting rod; The driving member includes a motor, a driving tooth connected to a side of the motor away from the power-assisting roller, driven teeth respectively connected to both sides of the driving tooth, and a transmission assembly for connecting the driven teeth and the power-assisting roller; The transmission assembly includes a first transmission member arranged on the side of the driven tooth facing the power-assisting roller, an output member arranged on the side of the power-assisting roller facing the driven tooth, and a second transmission member for connecting the first transmission member and the output member, and the second transmission member can slide between the first transmission member and the output member.

2. The vertical high-speed electroplating equipment for composite copper foil according to claim 1 is characterized in that: A slide groove is provided on the slide arm for accommodating part of the assist roller group. The assist roller group is driven to slide along the slide groove track by the lifting rod to adjust the conduction path and contact surface of the copper foil between the two assist roller groups and between the first conductive roller and the transition assembly.

3. The vertical high-speed electroplating equipment for composite copper foil according to claim 2, characterized in that: The transition assembly includes a driving rod and a transition roller group fixedly arranged at the output end of the driving rod.

4. The vertical high-speed electroplating equipment for composite copper foil according to claim 3 is characterized in that: The transition roller group includes a fixed seat connected to the output end of the driving rod, a fixed frame fixedly arranged on the fixed seat away from the output end of the driving rod, and a transition roller movably arranged on one end of the fixed frame away from the fixed seat.

5. The vertical high-speed electroplating equipment for composite copper foil according to claim 4, characterized in that: A squeezing roller is provided on a side of the second conductive roller away from the first conductive roller. The squeezing roller abuts against an outer surface of the second conductive roller and rotates relatively thereto.

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