A wide adjustable conductive deposition device for roll-to-roll composite copper foil production

Abstract

This invention provides a wide-width adjustable conductive deposition equipment for roll-to-roll composite copper foil production, addressing the problems in existing technologies such as fixed conductive roller width, lack of edge current compensation leading to dog-bone effect, rigid roller surface easily trapping air bubbles and damaging the substrate, and the inability of traditional flattening mechanisms to dynamically adjust, resulting in film wrinkling. The invention provides a wide-width adjustable conductive deposition equipment for roll-to-roll composite copper foil production, comprising: a conductive tank, within which are installed a main conductive component, a conductive width adjustment component, a follow-up edge current compensation component, and an auxiliary tension stabilization and flattening mechanism. It enables stepless synchronous adjustment of the conductive width while isolating it from the bath solution, precisely controlling the effective conductive range; follow-up compensation of edge current to eliminate dog-bone effect; active removal of hydrogen evolution microbubbles to avoid pinhole defects and protect ultra-thin substrates; dynamic fine-tuning of film tension; adaptive flattening to prevent wrinkling; and improved yield of composite copper foil deposition and equipment uptime.

Description

Technical Field

[0001] This invention relates to the field of composite copper foil production technology, and in particular to a wide-width adjustable conductive deposition apparatus for producing roll-to-roll composite copper foil. Background Technology

[0002] In the production process of composite copper foil, wet deposition is the core process for thickening the metal layer and improving conductivity. This process usually adopts a roll-to-roll continuous conveyor belt method, so that the base film passes around the cathode conductive roller in the conductive groove and deposits metallic copper on the surface of the base film through electrochemical reaction.

[0003] For example, Chinese utility model patent CN219930299U discloses a horizontal continuous electroplating tank for PET composite copper foil. This equipment uses horizontal conveying rollers and an electrolytic copper liquid spraying device, which to some extent solves the problems of edge flaring and macroscopic bubbles caused by self-weight in traditional vertical electroplating. However, with the diversification of market demand for composite copper foil and the continuous improvement of product yield requirements, the above-mentioned equipment and existing conventional deposition equipment have revealed the following significant technical defects in actual production: First, the conductive roller of the equipment has a fixed width, which cannot be adapted to the production of copper foil with different widths: the cathode conductive roller of the existing equipment is usually designed with a fixed width. When it is necessary to produce narrow copper foil, the equipment cannot be flexibly adapted, resulting in high production line switching costs and low equipment utilization. Second, the equipment lacks an edge current compensation mechanism, making it difficult to solve the "edge effect" caused by edge current concentration. During the wet deposition process, due to the edge electric field concentration effect, the current density at the edge of the film is naturally higher than that in the middle. For example, most existing technologies of this equipment usually only use fixed physical limiting plates to restrict the edge position of the film, lacking an effective edge current compensation mechanism. Even if some existing equipment is equipped with fixed compensation electrodes, when switching narrow copper foil, the distance between the fixed electrode and the edge of the film changes, which will also cause the compensation electric field to fail. This uncontrollable edge current can easily lead to excessively thick edge coating, i.e., the "edge effect", which seriously affects the consistency of the product. Third, the rigid conductive roller surface of existing equipment is prone to trapping hydrogen microbubbles and can easily damage extremely thin substrates: most conductive rollers have rigid metal surfaces. Although the spraying device can eliminate some macrobubbles, it cannot actively remove the hydrogen microbubbles continuously generated on the cathode surface due to electrochemical reactions. These microbubbles are very easy to adhere between the rigid roller surface and the extremely thin composite copper foil, resulting in pinholes, pitting, or poor adhesion of the coating. In addition, the rigid contact lacks flexible buffering when there are local tension fluctuations, which can easily damage the soft polymer base film, causing tape breakage or substrate stretching deformation. Fourth, tension fluctuations in the conveyor belt within the deposition tank easily lead to wrinkling of the membrane fabric, and traditional flattening mechanisms cannot dynamically adjust this: When the composite copper foil is conveyed in the deposition tank solution, it is subjected to complex effects from fluid resistance, electric field force, and temperature changes, easily resulting in uneven lateral tension and wrinkling. Existing technologies typically use fixed-curvature arc-shaped flattening rollers for passive support, but their curvature and friction distribution are static. When the production line speeds up or slight changes in membrane fabric thickness cause tension fluctuations, the fixed flattening rollers cannot be dynamically adjusted, leading to dark wrinkles and creases, increasing the scrap rate of the membrane fabric. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a roll-to-roll composite copper foil production line with adjustable width that can flexibly adapt to multi-width production, achieve precise edge compensation and follow-up, effectively remove hydrogen evolution bubbles and has dynamic anti-wrinkling function. This solves the problems of difficult width switching, lack of edge current compensation, insufficient bubble removal mechanism and inability to dynamically adjust anti-wrinkling mechanism in existing composite copper foil conductive deposition equipment.

[0005] To achieve the above and other related objectives, the present invention provides a wide-width adjustable conductive deposition apparatus for producing roll-to-roll composite copper foil, comprising: A conductive tank is provided, in which a main conductive component, a conductive width adjustment component, a follow-up edge current compensation component, and an auxiliary tension stabilization and flattening mechanism are installed. The conductive width adjustment component is located at the front and rear ends of the main conductive component. The follow-up edge current compensation component is installed on the upper part of the conductive width adjustment component. The auxiliary tension stabilization and flattening mechanism is installed on the left and right parts of the main conductive component. The main conductive component is used to provide conductive support for the composite copper foil film cloth; The conductive width adjustment component is used to control the conductive width of the main conductive component according to the width of the membrane fabric; The following edge current compensation component is used to compensate for the current at the edge of the membrane fabric. The auxiliary tension stabilizing and flattening mechanism is used to assist in the transmission of the membrane fabric and control the membrane fabric tension.

[0006] Optionally, the main conductive component includes conductive rollers, a fixing block, a first connecting plate, and a conductive busbar. Four conductive rollers are equidistantly rotatably installed in the middle of the conductive trough, and the rear end of the conductive rollers passes through the rear wall of the conductive trough. The outer wall of the rear end of the conductive rollers is rotatably sleeved with a first connecting plate through a bearing. The first connecting plate is installed on the rear wall of the conductive trough through the fixing block, and a conductive busbar is fixed between the upper ends of the four first connecting plates.

[0007] Optionally, the outer wall of the conductive roller is provided with a spiral guide groove, and the spiral direction of the spiral guide groove is opposite to the rotation direction of the conductive roller.

[0008] Optionally, the conductive width adjustment assembly includes a positioning baffle, a positioning bearing, a transmission sleeve, a driving external thread, a driven gear, a driving cylinder, a transmission rack, an insulating sleeve, and a mating internal thread. A positioning baffle is installed inside the rear part of the conductive groove, and the inner side of the front wall of the conductive groove and... Four positioning bearings are fixed at equal intervals inside the positioning baffle, and two positioning bearings at the front and rear positions form a pair of bearing groups. The four conductive rollers are respectively rotatably inserted into the inner rings of the four pairs of bearing groups. The outer wall of each positioning bearing is rotatably fitted with a transmission sleeve. The outer wall of the transmission sleeve has a driving external thread, and the outer end of the transmission sleeve is fixed with a driven gear. The right front and left rear parts of the conductive groove are each equipped with a driving cylinder. The output end of the driving cylinder is fixed with a transmission rack, and the transmission rack is slidably installed on the inner side of the lower wall of the conductive groove. The front and rear transmission racks are respectively meshed with the four driven gears in the front and the four driven gears in the rear. The outer wall of the transmission sleeve is fitted with an insulating sleeve. The inner wall of the outer end of the insulating sleeve has a mating internal thread, and the mating internal thread is threadedly connected to the driving external thread. A flexible sealing ring is provided between the inner wall of the insulating sleeve and the outer wall of the conductive roller. The flexible sealing ring is made of fluororubber material.

[0009] Optionally, the conductive width adjustment assembly further includes a substrate inlet / outlet, a limiting slider, a limiting guide rail, and a linkage connecting block. The left and right walls of the insulating sleeve are symmetrically provided with substrate inlets / outlets. A limiting slider is fixed to the lower outer wall of the insulating sleeve. A limiting guide rail is vertically installed on the inner side of the lower wall of the conductive groove. The limiting slider is slidably installed in the limiting guide rail. A linkage connecting block is fixed to the upper inner wall of the insulating sleeve.

[0010] Optionally, the follow-up edge current compensation component includes an auxiliary compensation electrode, a conductive slide rail, an insulating limit connector, a conductive block, a second connecting plate, and an auxiliary conductive busbar. An auxiliary compensation electrode is fixed between the upper walls of the four front linkage connectors and the upper walls of the four rear linkage connectors. Conductive slide rails are provided at both ends of the auxiliary compensation electrode, and the left and right ends of the auxiliary compensation electrode are slidably installed within two of the conductive slide rails. Insulating limit connectors are fixed at both ends of the conductive slide rails, and the conductive slide rails and the insulating limit connectors at both ends form a closed cuboid frame. The insulating limit connectors are fixed within the conductive groove by connectors. Conductive blocks are fixed to the outer sides of the conductive slide rails, and second connecting plates are installed on the conductive blocks. An auxiliary conductive busbar is installed between the rear ends of the four second connecting plates.

[0011] Optionally, both the conductive bus and the auxiliary conductive bus are provided with power supply terminals at their ends, and the conductive bus and the auxiliary conductive bus are respectively connected to the negative and positive terminals of an external DC power supply.

[0012] Optionally, the auxiliary compensation electrode is a long strip of conductive metal made of titanium, and the auxiliary compensation electrode extends along the arrangement direction of the conductive rollers, with the vertical conductive projection range of the auxiliary compensation electrode covering the edge of the insulating sleeve.

[0013] Optionally, the auxiliary tensioning and flattening mechanism includes a drive shaft, a bevel gear linkage assembly, mounting baffles, and an auxiliary drive roller assembly. The drive shaft is horizontally rotatably disposed in the front part of the conductive trough. Mounting baffles are fixed in both the front and rear parts of the conductive trough. An auxiliary drive roller assembly is disposed between the front and rear mounting baffles. The auxiliary drive roller assembly consists of several sets of auxiliary drive rollers that rotate relative to each other vertically, and the membrane fabric passes through the auxiliary drive roller assembly. Both the front and rear ends of the auxiliary drive roller assembly are linked to the drive shaft through a bevel gear linkage assembly. The bevel gear linkage assembly consists of meshing bevel gears, and the bevel gears are respectively sleeved on the front end of the auxiliary drive roller assembly and the outer wall of the drive shaft.

[0014] Optionally, the upper auxiliary drive roller in the auxiliary drive roller assembly is floatingly mounted on the mounting baffle via an elastic element.

[0015] As described above, the roll-to-roll composite copper foil production wide-width adjustable conductive deposition apparatus of the present invention has at least the following beneficial effects: 1. By opening spiral guide grooves on the outer wall of the conductive roller in the opposite direction of rotation, the reverse spiral structure generates axial thrust when the conductive roller rotates, actively and rapidly discharging hydrogen microbubbles continuously generated on the cathode surface due to electrochemical reactions along the axial direction. This avoids pinhole and pitting defects caused by microbubbles being trapped between the rigid roller surface and the ultra-thin substrate. At the same time, the axial liquid flow generated by the reverse spiral forms a uniform scouring force on the film surface, reducing the rigid pressure damage to the substrate caused by local tension fluctuations. This solves the problem in the prior art that the rigid conductive roller surface is prone to trapping hydrogen-evolved microbubbles and easily damages the ultra-thin substrate.

[0016] 2. By setting up a conductive width adjustment assembly consisting of a drive cylinder, a transmission rack, a driven gear, and an insulating sleeve, the output ends of the two drive cylinders are controlled to move synchronously in opposite directions or away from each other. Through the linkage between the gear rack and the insulating sleeve, the insulating sleeves at both ends of the conductive roller slide inward to retract or slide outward to expand synchronously. The insulating sleeve forms a dynamic seal with the conductive roller through the flexible sealing ring on its inner wall, effectively preventing the bath liquid from entering the blocked area. The conductive roller area blocked by the insulating sleeve does not come into contact with the bath liquid and therefore does not undergo an electroplating reaction. Only the unblocked area undergoes conductive deposition, realizing precise control of the conductive range and stepless, synchronous adjustment of the conductive width. There is no need to stop the machine to replace the mechanical structure, which greatly improves the production line switching efficiency and equipment uptime, and solves the problem that the conductive roller width is fixed in the existing technology and cannot be adapted to the production of copper foil with different widths.

[0017] 3. By setting up a follow-up edge current compensation component consisting of an auxiliary compensation electrode, a conductive slide rail, and a linkage connecting block, the auxiliary compensation electrode is a strip-shaped conductive titanium metal part with excellent corrosion resistance and chemical stability. It can work for a long time in an acidic electroplating solution without being corroded, thus avoiding electrode material contamination of the electroplating solution. When the conductive width adjustment component adjusts the spacing of the insulating sleeve, the linkage connecting block drives the auxiliary compensation electrode to move synchronously, keeping it within the preset compensation distance on the outer side of the membrane cloth edge. By following up and adjusting the position of the auxiliary anode, the electric field distribution at the edge of the membrane cloth is dynamically optimized, absorbing excess current at the edge and completely eliminating the "edge effect" of excessively thick edge coating. This ensures the consistency of the transverse thickness of the membrane cloth and solves the problem of the lack of an edge current compensation mechanism in the existing technology, which makes it difficult to solve the "edge effect" caused by concentrated edge current.

[0018] 4. By setting up an auxiliary tension stabilization and flattening mechanism composed of elastic floating auxiliary transmission rollers and bevel gear linkage components, the bevel gear linkage components synchronously transmit the rotational power of the transmission shaft to each auxiliary transmission roller, ensuring that the rotational speed of all auxiliary transmission rollers is consistent, avoiding uneven film tension caused by speed differences. The elastic element provides floating support force for the upper auxiliary transmission rollers, enabling the auxiliary transmission rollers to automatically adjust the clamping force according to the actual tension of the film. When the production line speeds up or the film thickness changes, causing lateral tension fluctuations, the upper auxiliary transmission rollers generate a slight float under the action of the elastic element. Combined with the synchronous transmission of the bevel gear linkage components, a dynamic flattening force is applied to the film, realizing dynamic fine-tuning and adaptive flattening of the lateral tension of the film. This effectively eliminates dark wrinkles and creases caused by the complex effects of fluid resistance and electric field force, significantly reducing the scrap rate of film processing, and solving the problem that tension fluctuations in the belt conveyor in the existing technology easily lead to film wrinkling, and that traditional flattening mechanisms cannot be dynamically adjusted. Attached Figure Description

[0019] Figure 1 The diagram shown is a three-dimensional schematic representation of the overall structure of the present invention.

[0020] Figure 2 The image shown is a rear view of the overall structure of the present invention.

[0021] Figure 3 The image shown is a three-dimensional schematic diagram of the transmission structure within the conductive groove of the present invention.

[0022] Figure 4 The diagram shows a three-dimensional view of the structure of the single conductive roller and the conductive width adjustment component of the present invention.

[0023] Figure 5 The diagram shown is an exploded perspective view of the conductive width adjustment component of the present invention.

[0024] Figure 6 The diagram shown is a partially enlarged three-dimensional schematic of the gear and rack transmission structure at the end of the conductive roller of the present invention.

[0025] Figure 7 The diagram shown is a top view of the conductive width adjustment component of the present invention.

[0026] Figure 8 The diagram shows a three-dimensional view of the structure of the conductive roller and the transmission sleeve of the present invention.

[0027] Figure 9 The diagram shown is a three-dimensional schematic of the follow-up edge current compensation component of the present invention.

[0028] Figure 10 The diagram shows a three-dimensional representation of the interaction between the follow-up edge current compensation component and the conductive width adjustment component of the present invention.

[0029] Figure 11 The image shown is a three-dimensional bottom view of the combination of the follow-up edge current compensation component and the conductive width adjustment component of the present invention.

[0030] Figure 12 The diagram shown is a top view of the conductive groove transmission structure of the present invention.

[0031] Component designation explanation 1. Conductive tank; 2. Main conductive assembly; 201. Conductive roller; 202. Fixing block; 203. First connecting plate; 204. Conductive busbar; 205. Spiral guide groove; 3. Conductive width adjustment assembly; 301. Positioning baffle; 302. Positioning bearing; 303. Transmission sleeve; 304. Drive external thread; 305. Driven gear; 306. Drive cylinder; 307. Transmission rack; 308. Insulating sleeve; 309. Mating internal thread; 310. Substrate inlet / outlet; 311. Limiting slider; 312. Limiting guide rail; 313. Linkage connecting block; 4. Follow-up edge current compensation component; 401. Auxiliary compensation electrode; 402. Conductive slide rail; 403. Insulation limit connector; 404. Conductive block; 405. Second connecting plate; 406. Auxiliary conductive busbar; 5. Auxiliary tensioning and flattening mechanism; 501. Drive shaft; 502. Bevel gear linkage assembly; 503. Mounting baffle; 504. Auxiliary drive roller assembly. Detailed Implementation

[0032] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0033] Please see Figures 1 to 12 It should be noted that directional words such as 'front,' 'back,' 'left,' 'right,' 'up,' and 'down' are based on the appendix. Figure 1 The orientations or positional relationships shown are for the purpose of facilitating and simplifying the description of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. The structures, proportions, sizes, etc., illustrated in the accompanying drawings are only used to complement the content disclosed in the specification, so as to enable those skilled in the art to understand and read them, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0034] Example 1

[0035] Please see Figure 1 To achieve continuous deposition and basic conductive support for composite copper foil film, this invention provides a roll-to-roll composite copper foil production equipment with adjustable width, comprising: a conductive tank 1, wherein a main conductive component 2, a conductive width adjustment component 3, a follow-up edge current compensation component 4, and an auxiliary tension stabilization and flattening mechanism 5 are installed in the conductive tank 1. The conductive width adjustment component 3 is disposed at the front and rear ends of the main conductive component 2, the follow-up edge current compensation component 4 is installed on the upper part of the conductive width adjustment component 3, and the auxiliary tension stabilization and flattening mechanism 5 is installed on the left and right parts of the main conductive component 2.

[0036] More comprehensively, such as Figures 1-5 , Figure 7 and Figures 11-12As shown, the main conductive component 2 includes a conductive roller 201, a fixing block 202, a first connecting plate 203, and a conductive busbar 204. Four conductive rollers 201 are equidistantly rotatably installed in the middle of the conductive tank 1, and the rear end of the conductive rollers 201 passes through the rear wall of the conductive tank 1. The outer wall of the rear end of the conductive rollers 201 is rotatably sleeved with the first connecting plate 203 through a bearing. The first connecting plate 203 is installed on the rear wall of the conductive tank 1 through the fixing block 202. A conductive busbar 204 is fixed between the upper ends of the four first connecting plates 203. The conductive busbar 204 evenly distributes the negative potential of the external DC power supply to the four conductive rollers 201, ensuring the consistency of the cathode potential of each conductive roller 201 and avoiding uneven coating thickness caused by potential difference.

[0037] More comprehensively, such as Figures 1-5 As shown, the outer wall of the conductive roller 201 is provided with a spiral guide groove 205, and the spiral direction of the spiral guide groove 205 is opposite to the rotation direction of the conductive roller 201. The depth of the spiral guide groove 205 is 0.3mm and the width of the groove is 5mm. This will not affect the structural strength of the conductive roller 201, and can effectively form an axial liquid flow channel.

[0038] Working principle: The composite copper foil film continuously travels within the conductive tank 1, covering the surface of four conductive rollers 201. The conductive busbar 204 is connected to the negative terminal of an external DC power supply, making the conductive rollers 201 cathodes. Under the action of the electric field, the film completes metal deposition. When the conductive rollers 201 rotate, the spiral guide groove 205 uses its reverse spiral structure to generate axial thrust, actively and rapidly discharging the hydrogen microbubbles continuously generated on the cathode surface due to the electrochemical reaction along the axial direction. This avoids pinhole and pitting defects caused by microbubbles being trapped between the rigid roller surface and the ultra-thin substrate. At the same time, the axial liquid flow generated by the reverse spiral forms a uniform scouring force on the surface of the film, reducing the rigid pressure damage to the substrate caused by local tension fluctuations. This solves the problem in the prior art that the rigid conductive roller surface is prone to trapping hydrogen microbubbles and easily damages the ultra-thin substrate.

[0039] Example 2

[0040] Please see Figure 1 , Figures 3-12To achieve control over the conductive width of the main conductive component 2 based on the film width and solve the width adaptation problem, this invention provides a conductive deposition equipment with adjustable width for roll-to-roll composite copper foil production. It further includes a conductive width adjustment component 3, which comprises a positioning baffle 301, positioning bearings 302, a transmission sleeve 303, a driving external thread 304, a driven gear 305, a driving cylinder 306, a transmission rack 307, an insulating sleeve 308, and a mating internal thread 309. The positioning baffle 301 is installed in the rear of the conductive tank 1. Four positioning bearings 302 are equidistantly fixed on the inner side of the front wall of the conductive tank 1 and inside the positioning baffle 301. Two positioning bearings 302 at corresponding front and rear positions form a pair of bearing groups. Four conductive rollers 201 are rotatably inserted into the inner rings of the four pairs of bearing groups. Transmission sleeves 303 are rotatably sleeved on the outer walls of the positioning bearings 302. The outer wall is provided with a driving external thread 304, and the outer wall of the transmission sleeve 303 is fixed with a driven gear 305. The right front and left rear parts of the conductive tank 1 are both equipped with driving cylinders 306. The output end of the driving cylinder 306 is fixed with a transmission rack 307, and the transmission rack 307 is slidably installed on the inner side of the lower wall of the conductive tank 1. The front and rear transmission racks 307 are respectively meshed with the four front driven gears 305 and the four rear driven gears 305. The outer wall of the transmission sleeve 303 is sleeved with an insulating sleeve 308. The inner wall of the outer end of the insulating sleeve 308 is provided with a mating internal thread 309, and the mating internal thread 309 is threadedly connected with the driving external thread 304. A flexible sealing ring is provided between the inner wall of the insulating sleeve 308 and the outer wall of the conductive roller 201. The flexible sealing ring is made of fluororubber material, which allows the conductive roller 201 to rotate and prevents the tank liquid from seeping into the interior of the insulating sleeve 308.

[0041] More comprehensively, such as Figures 4-6 and Figures 8-11 As shown, the conductive width adjustment assembly 3 also includes a substrate inlet / outlet 310, a limiting slider 311, a limiting guide rail 312, and a linkage connecting block 313. The left and right walls of the insulating sleeve 308 are symmetrically provided with substrate inlets / outlets 310. A limiting slider 311 is fixed to the lower outer wall of the insulating sleeve 308. A limiting guide rail 312 is vertically installed on the inner side of the lower wall of the conductive groove 1. The limiting slider 311 is slidably installed within the limiting guide rail 312. The cooperation between the limiting slider 311 and the limiting guide rail 312 is used for… The sliding trajectory of the insulating sleeve 308 is constrained to prevent it from rotating circumferentially during the threaded transmission process, ensuring that the insulating sleeve 308 moves only linearly along the axial direction of the conductive roller 201. A linkage connecting block 313 is fixed on the upper wall of the inner end of the insulating sleeve 308. The linkage connecting block 313 is used to rigidly connect the insulating sleeve 308 with the auxiliary compensation electrode 401, so that when adjusting the conductive width, the auxiliary compensation electrode 401 can move synchronously with the insulating sleeve 308 and maintain a constant relative position with the edge of the membrane.

[0042] Working principle: When switching between different widths of copper foil production, the output ends of the two drive cylinders 306 are controlled to move synchronously in opposite directions, driving the transmission rack 307 to move linearly. The transmission rack 307 drives the driven gear 305 to rotate, which in turn drives the transmission sleeve 303 to rotate in conjunction, so that the drive external thread 304 and the mating internal thread 309 are threadedly transmitted. Under the sliding limit action of the limit slider 311 and the limit guide rail 312, the insulating sleeves 308 at both ends of the conductive roller 201 slide inward to retract or slide outward to expand synchronously. The insulating sleeves 308 make way for the membrane cloth through the substrate inlet / outlet 310 on their side walls, and the insulating sleeves 308 are flexible sealed through their inner walls. The ring and the conductive roller 201 form a dynamic seal, effectively preventing the bath liquid from entering the shielded area. The area of ​​the conductive roller 201 shielded by the insulating sleeve 308 does not undergo electroplating reaction because it does not come into contact with the bath liquid. Only the unshielded area undergoes conductive deposition. Thus, through the linkage between the gear rack and the insulating sleeve 308, the insulating sleeve 308 not only physically shields the outer edge of the film cloth, but also truly achieves precise control of the conductive range by isolating the bath liquid. This enables stepless and synchronous adjustment of the conductive width without the need to stop the machine to replace the mechanical structure, greatly improving the production line switching efficiency and equipment uptime. It also solves the problem in the existing technology where the conductive roller width is fixed and cannot be adapted to the production of copper foils of different widths.

[0043] Example 3

[0044] Please see Figures 1-3 and Figures 9-11To address the "edge effect" caused by concentrated edge current, this invention provides a wide-width adjustable conductive deposition equipment for roll-to-roll composite copper foil production, which compensates for current at the edge of the film. The equipment further includes a follow-up edge current compensation component 4, comprising an auxiliary compensation electrode 401, a conductive slide rail 402, an insulation limit connector 403, a conductive block 404, a second connecting plate 405, and an auxiliary conductive busbar 406. The auxiliary compensation electrode 401 is fixed between the upper walls of the four front linkage connectors 313 and the upper walls of the four rear linkage connectors 313. Conductive slide rails 402 are provided at both ends of the auxiliary compensation electrode 401, and the left and right ends of the auxiliary compensation electrode 401 are slidably installed within the two conductive slide rails 402. Insulating limit connectors 403 are fixed at both ends of the conductive slide rail 402, and the conductive slide rail 402 and the insulating limit connectors 403 at both ends form a closed cuboid frame. The insulating limit connectors 403 are used to provide sliding guidance and mechanical limit for the anode compensation electrode 401, prevent the anode compensation electrode 401 from coming out of the conductive slide rail 402, avoid direct metal contact between the conductive slide rails 402, reduce wear, and prevent potential leakage caused by conductive material deposited on the surface. The insulating limit connectors 403 are fixed in the conductive groove 1 by connectors. Conductive blocks 404 are fixed on the outer side of the conductive slide rail 402. The conductive blocks 404 are made of high conductivity copper material and are used to conduct the current of the auxiliary conductive busbar 406 to the conductive slide rail 402, ensuring that the auxiliary compensation electrode 401 obtains a stable anode potential. A second connecting plate 405 is installed on the conductive block 404, and an auxiliary conductive busbar 406 is installed between the rear ends of the four second connecting plates 405.

[0045] More comprehensively, such as Figures 1-3 and Figure 12 As shown, both the conductive bus 204 and the auxiliary conductive bus 406 are provided with power supply terminals at their ends. The conductive bus 204 and the auxiliary conductive bus 406 are respectively connected to the negative and positive terminals of the external DC power supply.

[0046] More precisely, the auxiliary compensation electrode 401 is a long strip of conductive metal made of titanium. Titanium has excellent corrosion resistance and chemical stability, and can work for a long time in an acidic electroplating solution without being corroded, thus avoiding electrode material contamination of the electroplating solution. Furthermore, the auxiliary compensation electrode 401 extends along the arrangement direction of the conductive roller 201, and the vertical conductive projection range of the auxiliary compensation electrode 401 covers the edge of the insulating sleeve 308. The projection of the auxiliary compensation electrode 401 on the plane perpendicular to the axis of the conductive roller 201 can completely cover the left and right edge areas of the insulating sleeve 308, ensuring that there are no dead angles in the edge electric field compensation.

[0047] Working principle: The insulating limit connector 403 fixes the follow-up edge current compensation component 4 in the tank. The conductive slide rail 402 is connected to the positive power supply through the second connecting plate 405 and the auxiliary conductive busbar 406, so that the auxiliary compensation electrode 401 forms the auxiliary anode. When the conductive width adjustment component 3 adjusts the spacing of the insulating sleeve 308, the linkage connecting block 313 drives the auxiliary compensation electrode 401 to move synchronously, so that it is always kept within the preset compensation distance on the outer side of the membrane cloth edge. In this way, by following up and adjusting the position of the auxiliary anode, the electric field distribution at the edge of the membrane cloth is dynamically optimized, excess current at the edge is absorbed, and the "edge effect" of excessive edge coating is completely eliminated, ensuring the consistency of the transverse thickness of the membrane cloth. This solves the problem of the lack of edge current compensation mechanism in the prior art, which makes it difficult to solve the "edge effect" caused by the concentration of edge current.

[0048] Example 4

[0049] Please see Figure 1 , Figure 3 and Figure 12 To assist in the transmission of the membrane fabric and solve the problem of membrane fabric wrinkling caused by tension fluctuations in the belt conveyor within the tank, this invention provides a wide-width adjustable conductive deposition equipment for roll-to-roll composite copper foil production. It further includes an auxiliary tension stabilization and flattening mechanism 5, which comprises a drive shaft 501, a bevel gear linkage assembly 502, mounting baffles 503, and an auxiliary drive roller assembly 504. The drive shaft 501 is horizontally rotatably disposed within the front part of the conductive tank 1. Mounting baffles 503 are fixedly installed in both the front and rear parts of the conductive tank 1. An auxiliary drive roller assembly 504 is disposed between the front and rear mounting baffles 503. The auxiliary drive roller assembly 504 consists of several sets of auxiliary drive rollers arranged vertically and rotatably, and the membrane fabric passes through the spaces between the auxiliary drive roller assemblies 504. Both ends of the auxiliary drive roller assembly 504 are linked to the drive shaft 501 through the bevel gear linkage assembly 502. The bevel gear linkage assembly 502 consists of meshing bevel gears, which are respectively sleeved on the front end of the auxiliary drive roller assembly 504 and the outer wall of the drive shaft 501. The bevel gear linkage assembly 502 is used to synchronously transmit the rotational power of the drive shaft 501 to each auxiliary drive roller, ensuring that the rotational speed of all auxiliary drive rollers is consistent and avoiding uneven film tension caused by speed difference.

[0050] More precisely, the upper auxiliary drive roller in the auxiliary drive roller assembly 504 is floatingly mounted on the mounting baffle 503 via an elastic element. The elastic element provides floating support for the upper auxiliary drive roller, enabling the auxiliary drive roller to automatically adjust the clamping force according to the actual tension of the membrane fabric, thus ensuring transmission stability and avoiding damage to the membrane fabric caused by excessive clamping.

[0051] Working principle: Before and after entering the main conductive component 2, the membrane fabric passes through the auxiliary transmission roller assembly 504. When the production line speeds up or the membrane fabric thickness changes, causing lateral tension fluctuations, the upper auxiliary transmission rollers float slightly under the action of the elastic element. This, combined with the synchronous transmission of the bevel gear linkage assembly 502, applies a dynamic flattening force to the membrane fabric and assists in the membrane fabric transmission. In this way, through the linkage between the floating auxiliary transmission rollers and the bevel gears, dynamic fine-tuning and adaptive flattening of the lateral tension of the membrane fabric are achieved. This effectively eliminates dark wrinkles and creases caused by the complex effects of fluid resistance and electric field force, significantly reducing the scrap rate of membrane fabric processing. It solves the problem in the existing technology that the tension fluctuations in the belt conveyor in the tank easily lead to membrane fabric wrinkling, and that the traditional flattening mechanism cannot be dynamically adjusted.

[0052] In summary: I. This invention utilizes an active exhaust structure that combines a spiral guide groove with reverse rotation to solve the problem in the prior art where rigid conductive roller surfaces easily retain hydrogen evolution microbubbles and easily damage extremely thin substrates. II. This invention utilizes a gear and rack drive mechanism to synchronously slide the insulating sleeve, which solves the problem in the prior art where the width of the conductive roller is fixed and cannot be adapted to the production of copper foils of different widths. Third, this invention utilizes a follow-up auxiliary compensation electrode driven by a linkage connection block to solve the problem of the lack of an edge current compensation mechanism in the prior art, which makes it difficult to solve the "edge effect" caused by edge current concentration. IV. The present invention utilizes an elastic floating auxiliary transmission roller and a bevel gear linkage flattening mechanism to solve the problem in the prior art that the tension fluctuation of the belt in the groove easily leads to wrinkling of the membrane fabric, and that the traditional flattening mechanism cannot be dynamically adjusted.

[0053] Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0054] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A wide-width adjustable conductive deposition apparatus for producing roll-to-roll composite copper foil, characterized in that, include: A conductive tank (1) is provided with a main conductive component (2), a conductive width adjustment component (3), a follow-up edge current compensation component (4), and an auxiliary tension stabilization and flattening mechanism (5). The conductive width adjustment component (3) is located at the front and rear ends of the main conductive component (2). The follow-up edge current compensation component (4) is installed on the upper part of the conductive width adjustment component (3). The auxiliary tension stabilization and flattening mechanism (5) is installed on the left and right parts of the main conductive component (2). The main conductive component (2) is used to provide conductive support for the composite copper foil film cloth; The conductive width adjustment component (3) is used to control the conductive width of the main conductive component (2) according to the width of the membrane cloth; The following edge current compensation component (4) is used to compensate the current at the edge of the membrane fabric. The auxiliary tension stabilizing and flattening mechanism (5) is used to assist the membrane fabric transmission and control the membrane fabric tension.

2. The adjustable-width conductive deposition equipment for producing roll-to-roll composite copper foil according to claim 1, characterized in that: The main conductive component (2) includes a conductive roller (201), a fixing block (202), a first connecting plate (203), and a conductive busbar (204). The four conductive rollers (201) are equidistantly rotatably installed in the middle of the conductive trough (1), and the rear end of the conductive roller (201) passes through the rear wall of the conductive trough (1). The outer wall of the rear end of the conductive roller (201) is rotatably sleeved with the first connecting plate (203) through a bearing. The first connecting plate (203) is installed on the rear wall of the conductive trough (1) through the fixing block (202). A conductive busbar (204) is fixed between the upper ends of the four first connecting plates (203).

3. The adjustable-width conductive deposition equipment for producing roll-to-roll composite copper foil according to claim 2, characterized in that: The outer wall of the conductive roller (201) is provided with a spiral guide groove (205), and the spiral direction of the spiral guide groove (205) is opposite to the rotation direction of the conductive roller (201).

4. The adjustable-width conductive deposition equipment for producing roll-to-roll composite copper foil according to claim 2, characterized in that: The conductive width adjustment assembly (3) includes a positioning baffle (301), a positioning bearing (302), a transmission sleeve (303), a driving external thread (304), a driven gear (305), a driving cylinder (306), a transmission rack (307), an insulating sleeve (308), and a mating internal thread (309). The positioning baffle (301) is installed in the rear part of the conductive groove (1). Four positioning bearings (302) are fixed at equal intervals on the inner side of the front wall of the conductive groove (1) and in the positioning baffle (301). Two positioning bearings (302) with corresponding front and rear positions form a pair of bearing groups. The four conductive rollers (201) are respectively rotatably inserted into the inner rings of the four pairs of bearing groups. The outer wall of each positioning bearing (302) is rotatably sleeved with a transmission sleeve (303). The outer wall of the transmission sleeve (303) is provided with a driving external thread (304). A driven gear (305) is fixed to the outer wall of the outer end of the sleeve (303). A drive cylinder (306) is installed in the right front part and the left rear part of the conductive groove (1). A transmission rack (307) is fixed to the output end of the drive cylinder (306). The transmission rack (307) is slidably installed on the inner side of the lower wall of the conductive groove (1). The transmission rack (307) in the front and rear parts respectively meshes with the four driven gears (305) in the front and the four driven gears (305) in the rear. An insulating sleeve (308) is sleeved on the outer wall of the transmission sleeve (303). The inner wall of the outer end of the insulating sleeve (308) is provided with a mating internal thread (309). The mating internal thread (309) is threadedly connected to the drive external thread (304). A flexible sealing ring is provided between the inner wall of the insulating sleeve (308) and the outer wall of the conductive roller (201).

5. The adjustable-width conductive deposition equipment for producing roll-to-roll composite copper foil according to claim 4, characterized in that: The conductive width adjustment component (3) further includes a substrate inlet / outlet (310), a limiting slider (311), a limiting guide rail (312), and a linkage connecting block (313). The left and right walls of the insulating sleeve (308) are symmetrically provided with substrate inlets / outlets (310). The lower outer wall of the insulating sleeve (308) is fixed with a limiting slider (311). The lower inner side of the conductive groove (1) is vertically installed with a limiting guide rail (312). The limiting slider (311) is slidably installed in the limiting guide rail (312). The upper inner wall of the insulating sleeve (308) is fixed with a linkage connecting block (313).

6. The adjustable-width conductive deposition equipment for producing roll-to-roll composite copper foil according to claim 5, characterized in that: The follow-up edge current compensation assembly (4) includes an auxiliary compensation electrode (401), a conductive slide rail (402), an insulating limit connector (403), a conductive block (404), a second connecting plate (405), and an auxiliary conductive busbar (406). An auxiliary compensation electrode (401) is fixed between the upper walls of the four front linkage connecting blocks (313) and the upper walls of the four rear linkage connecting blocks (313). Conductive slide rails (402) are provided at both ends of the auxiliary compensation electrode (401), and the left and right ends of the auxiliary compensation electrode (401) are slidably mounted on two of the four linkage connecting blocks (313). Inside the conductive slide rail (402), both the front and rear ends of the conductive slide rail (402) are fixed with insulating limit connecting seats (403), and the conductive slide rail (402) and the insulating limit connecting seats (403) at the front and rear ends form a closed cuboid frame. The insulating limit connecting seats (403) are fixed in the conductive groove (1) by connecting parts. Conductive blocks (404) are fixed on the outer side of the conductive slide rail (402). A second connecting plate (405) is installed on the conductive block (404), and an auxiliary conductive busbar (406) is installed between the rear ends of the four second connecting plates (405).

7. The adjustable-width conductive deposition equipment for producing roll-to-roll composite copper foil according to claim 6, characterized in that: The ends of the conductive bus (204) and the auxiliary conductive bus (406) are provided with power terminals, and the conductive bus (204) and the auxiliary conductive bus (406) are respectively connected to the negative and positive terminals of the external DC power supply.

8. The adjustable-width conductive deposition equipment for producing roll-to-roll composite copper foil according to claim 6, characterized in that: The auxiliary compensation electrode (401) is a long strip of conductive metal made of titanium, and the auxiliary compensation electrode (401) extends along the arrangement direction of the conductive roller (201). The vertical conductive projection range of the auxiliary compensation electrode (401) covers the edge of the insulating sleeve (308).

9. The adjustable-width conductive deposition equipment for producing roll-to-roll composite copper foil according to claim 8, characterized in that: The auxiliary tensioning and flattening mechanism (5) includes a drive shaft (501), a bevel gear linkage assembly (502), a mounting baffle (503), and an auxiliary drive roller assembly (504). The drive shaft (501) is horizontally rotatably disposed in the front part of the conductive trough (1). Mounting baffles (503) are fixed in both the front and rear parts of the conductive trough (1). An auxiliary drive roller assembly (504) is disposed between the front and rear mounting baffles (503). The auxiliary drive roller assembly (504) consists of several sets of auxiliary drive rollers that rotate relative to each other. The membrane cloth passes through the auxiliary drive roller assembly (504). Both the front and rear ends of the auxiliary drive roller assembly (504) are linked to the drive shaft (501) through the bevel gear linkage assembly (502). The bevel gear linkage assembly (502) consists of meshing bevel gears, which are respectively sleeved on the front end of the auxiliary drive roller assembly (504) and the outer wall of the drive shaft (501).

10. The adjustable-width conductive deposition equipment for producing roll-to-roll composite copper foil according to claim 9, characterized in that: The upper auxiliary drive roller in the auxiliary drive roller assembly (504) is floatingly mounted on the mounting baffle (503) via an elastic element.

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