A roll system for etching foil production

Abstract

This invention provides a winding system for producing etched foil, comprising a winding module, a smoothing module, and a tightening module. The winding module includes a winding roller and a power mechanism; the smoothing module includes a contact roller, a first telescopic mechanism, and a smoothing mechanism. The contact roller includes a shaft, a side plate, and an elastic contact layer, which together form a movable chamber filled with an oily medium. The contact characteristics of the elastic contact layer can be controlled by adjusting the oil pressure; the smoothing mechanism includes a smoothing ring movably sleeved on the shaft and a drive assembly. The outer edge of the smoothing ring protrudes and squeezes the elastic contact layer, dynamically smoothing the surface of the etched foil when it moves axially; the tightening module's tightening roller is located downstream of the contact roller's contact point with the etched foil, pressing the smoothed foil tightly onto the winding roller. This invention achieves a zoned, adjustable dynamic smoothing function through the cooperation of the flexible chamber and the movable extrusion ring. Combined with a dual pressure regulation mechanism, it effectively solves the problems of wrinkles and surface damage during the etched foil winding process.

Description

Technical Field

[0001] This invention relates to the field of etching foil processing equipment, and more particularly to an etching foil production and winding system. Background Technology

[0002] Etched foil is the core electrode material of aluminum electrolytic capacitors. Its production process involves electrochemically etching high-purity aluminum foil to create numerous micro-pores on the surface, increasing the specific surface area and thus improving the capacitor's capacitance per unit volume. The etching foil production line includes multiple steps such as foil feeding, pretreatment, pore-forming etching, pore-expanding etching, post-treatment, cleaning, drying, and winding. The winding process is the final step, where the finished etched foil is wound into a roll, directly affecting the product's appearance quality, end-face neatness, and subsequent performance.

[0003] During the etching and winding process, on the one hand, due to the dulling of the slitting blade or improper installation during cutting, tensile deformation will occur at the cut, and the edge will naturally curl up after winding. On the other hand, the effect of winding tension will exacerbate the deformation of the aluminum foil edge caused by slitting. If the tension fluctuates, it will cause deviation or local arching. Moreover, since the etched foil itself is thin and soft, it is easy to deform, which will lead to curling, directly affecting the quality of the etched foil after winding.

[0004] Traditional winding devices use pressure rollers to address issues such as misalignment, feed, and edge curling. However, because traditional pressure rollers use fixed, rigid contact, the pressure cannot adapt to changes in the roll diameter and taper of the foil. When using them for winding, the pressure adjustment may be suitable for small rolls but too large for large rolls, which can easily damage the foil surface. Furthermore, fixed pressure rollers or flattening rollers cannot precisely address localized wrinkles on the foil surface; they can only apply uniform pressure across the entire width, resulting in limited effectiveness in repairing localized defects. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a winding system for etched foil production. This system can perform active and adjustable smoothing treatment on the surface of the etched foil during the winding process, effectively eliminating surface wrinkles and ripple defects, and improving the winding quality and product yield of the etched foil.

[0006] According to an embodiment of the present invention, a winding system for producing etched foil is provided, comprising:

[0007] The winding module includes a winding roller and a power mechanism detachably connected to the winding roller and used to drive its rotation;

[0008] The smoothing module includes a contact roller that is parallel to and freely rotatable with the winding module, a first telescopic mechanism connected to the contact roller and capable of moving it closer to or away from the winding roller, and a smoothing mechanism disposed on the contact roller. The contact roller includes a shaft, side plates with a larger diameter that are coaxially fixed at both ends of the shaft, and an elastic contact layer connected between the two side plates. A movable chamber is formed between the shaft, the side plates, and the elastic contact layer and filled with an oily medium. An oil pipe communicating with the movable chamber is provided on the side plate. The smoothing mechanism includes a smoothing ring that is movably sleeved on the shaft and a drive assembly connected to the smoothing ring and capable of moving it axially. The outer edge of the smoothing ring protrudes outward and squeezes the elastic contact layer, so that the elastic contact layer contacts the etching foil. The surface of the etching foil is smoothed when the smoothing ring moves axially.

[0009] The clamping module includes a clamping roller and a second telescopic mechanism connected to the clamping roller and capable of moving it closer to or away from the take-up roller. The clamping roller is located downstream of the contact roller and the contact position of the etched foil along the take-up direction.

[0010] Preferably, the smoothing ring has an annular groove on its outer side and is connected to an elastic abutment layer surrounding the annular groove. The elastic abutment layer and the annular groove form a pressure regulating space and are filled with a pressure regulating medium.

[0011] More preferably, the shaft is provided with a groove parallel to its axis, the inner side of the smoothing ring is provided with a slider extending into the groove, the slider is provided with a channel communicating with the pressure regulating space, the side plate is provided with an interface pipe, and the interface pipe is connected to the channel with a medium hose located in the groove.

[0012] More preferably, the smoothing rings are provided in two sets, and the driving component synchronously drives the two smoothing rings to move closer or further away. When they move away, the medium is input into the pressure regulating space, and the pressure increases, causing the elastic abutment layer to squeeze the elastic contact layer to smooth them. When they move closer, the medium is output into the pressure regulating space, and the pressure decreases to avoid squeezing and wrinkling.

[0013] More preferably, the shaft is also provided with a transmission groove parallel to its axis. The drive assembly includes a transmission block disposed inside the smoothing ring and extending into the transmission groove, a transmission screw rotatably disposed in the transmission groove, and a drive motor fixed to the end of the shaft. The transmission screw is provided with opposite threads at both ends and is threadedly engaged with the two transmission blocks respectively. One end of the screw passes through the side plate and is connected to the drive motor for transmission.

[0014] More preferably, the first telescopic mechanism is connected to a bracket, the bracket is provided with two rotating frames and coaxially connected to a rotating shaft, the bracket is provided with a power control component that can drive the rotating shaft to rotate and brake, and the rotating frames are rotatably connected with a plurality of smoothing mechanisms evenly distributed along the circumference of the rotating shaft.

[0015] More preferably, the rotating frame is provided with radial elastic elements that are evenly distributed along the circumference of the rotating axis, and each radial elastic element is connected to a smoothing mechanism.

[0016] More preferably, the radial elastic element includes a cylinder connected to the rotating frame, a support arm extending into the cylinder and connected to it via a first elastic element, the support arm being connected to the smoothing mechanism, and the first elastic element also being connected to a pressure sensor located on the bottom wall of the cylinder.

[0017] More preferably, the end of the cylinder away from the smoothing mechanism is rotatably connected to the rotating frame, and its rotation axis is parallel to the rotating shaft. The rotating frame is provided with baffles located on both sides of the cylinder, and the baffles are connected to the side of the cylinder through a second elastic element.

[0018] In a further preferred embodiment, the bottom wall of the cylinder is also provided with an electromagnet, and the end of the support arm located inside the cylinder is provided with a magnetic block.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention utilizes an oil-based medium-filled movable chamber structure of a contact roller, with external hydraulic equipment used to adjust the oil pressure within the movable chamber. This allows for flexible adjustment of the overall stiffness and deformation characteristics of the elastic contact layer based on the material properties, thickness, and surface condition of the etched foil. Compared to existing pressure roller solutions with fixed pressure or gaps, the flexible contact mechanism provided by this invention effectively avoids damage to the surface pitting structure of the etched foil caused by rigid extrusion, while ensuring sufficient smoothing pressure, achieving the effect of "flexible contact and precise smoothing."

[0021] This invention utilizes the localized compression of the elastic contact layer by the smoothing ring as it moves axially, creating a dynamically moving localized high-pressure zone in the axial direction of the contact roller. As the smoothing ring moves from the center to both ends, this localized high-pressure zone moves synchronously, progressively flattening the surface of the etched foil from the center to the edges. This zoned dynamic smoothing method, compared to the uniform pressure applied across the entire width of the traditional pressure roller, more effectively eliminates localized wrinkles and ripple defects on the surface of the etched foil, resulting in a more thorough flattening effect. In particular, when a structure with two sets of smoothing rings moving in opposite directions is used, the two smoothing rings move towards the two side plates respectively, achieving symmetrical flattening from the center to both sides, further improving the uniformity and efficiency of the smoothing. During the return stroke, the pressure is reduced by the output medium within the pressure regulating space, preventing the elastic contact layer from being compressed and cleverly avoiding the problem of introducing new wrinkles through reverse compression.

[0022] This invention employs a dual pressure regulation mechanism: first, the overall oil pressure of the elastic contact layer is adjusted via an oily medium within the active chamber to control the base contact pressure; second, the degree of protrusion of the elastic contact layer is adjusted via a pressure regulating medium within the pressure regulating space to control the local smoothing pressure. These two levels of pressure regulation work together to achieve precise pressure matching based on different etched foil specifications and surface conditions, effectively solving the problem in existing technologies where the pressure roller pressure cannot be adaptively adjusted with changes in roll diameter. Attached Figure Description

[0023] Figure 1 This is a front view schematic diagram of the structure of an etched foil production and winding system according to the present invention.

[0024] Figure 2 This is a schematic diagram of the main structure of the contact roller and rotating frame in a winding system for producing etched foil according to the present invention.

[0025] Figure 3 This is a schematic diagram of the internal structure of the contact roller in a foil production winding system according to the present invention.

[0026] Figure 4 This invention relates to a etched foil production and winding system. Figure 2 A magnified schematic diagram of part A in the middle.

[0027] Figure 5 This invention relates to a etched foil production and winding system. Figure 3 A magnified schematic diagram of part B in the middle section.

[0028] Figure 6 This invention relates to a etched foil production and winding system. Figure 3 A magnified schematic diagram of a portion of the C-shaped structure.

[0029] In the above figures: 1. Winding module; 110. Winding roller; 120. Power mechanism;

[0030] 2. Smoothing module; 210. Contact roller; 211. Shaft; 212. Side plate; 213. Elastic contact layer; 214. Movable chamber; 215. Oily medium; 216. Oil pipe; 217. Transmission groove; 218. Slide groove;

[0031] 220. First telescopic mechanism; 221. Bracket; 222. Rotating frame; 223. Rotating shaft; 224. Power control assembly; 225. Baffle; 226. Second elastic element;

[0032] 2210, Radial elastic element; 2211, Cylinder body; 2212, First elastic element; 2213, Support arm; 2214, Electromagnet; 2215, Magnetic block; 2216, Pressure sensor;

[0033] 230. Smoothing mechanism; 2310. Smoothing ring; 2311. Annular groove; 2312. Elastic contact layer; 2313. Pressure regulating space; 2314. Pressure regulating medium; 2315. Slider; 2316. Channel; 2317. Interface pipe; 2318. Medium hose;

[0034] 2320. Drive assembly; 2321. Transmission block; 2322. Transmission screw; 2323. Drive motor;

[0035] 3. Tightening module; 310. Tightening roller; 320. Second telescopic mechanism. Detailed Implementation

[0036] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] This invention provides an embodiment, such as... Figure 1 , Figure 2 , Figure 3 As shown, a rewinding system for producing etched foil includes:

[0038] The winding module 1 includes a winding roller 110 and a power mechanism 120 detachably connected to the winding roller 110 and used to drive its rotation. The winding roller 110 has a cylindrical structure and is used to wind the etched foil around its outer circumference. The power mechanism 120 includes a motor and a transmission assembly. The motor drives the winding roller 110 to rotate to achieve the winding action. The detachable connection between the winding roller 110 and the power mechanism 120 facilitates the replacement of a new winding roller 110 after winding is completed. Common connection methods include keyway fit, chuck clamping, or tapered sleeve connection.

[0039] The smoothing module 2 includes a contact roller 210 that is parallel to the winding module 1 and can rotate freely, a first telescopic mechanism 220 that is connected to the contact roller 210 and can drive it to move closer to or away from the winding roller 110, and a smoothing mechanism 230 that is disposed on the contact roller 210.

[0040] The contact roller 210 includes a shaft 211, side plates 212 with a larger diameter coaxially fixed at both ends of the shaft 211, and an elastic contact layer 213 connected between the two side plates 212. The elastic contact layer 213 is cylindrical and made of elastic materials such as oil-resistant rubber or polyurethane. Its two ends are respectively fixed to the outer peripheral edges of the two side plates 212. A movable chamber 214 is formed between the shaft 211, the side plates 212, and the elastic contact layer 213 and is filled with an oily medium 215. The side plates 212 are provided with oil pipes 216 communicating with the movable chamber 214. The oil pipes 216 are connected to external hydraulic equipment, such as a hydraulic pump station or a manual hydraulic pump, through rotary joints and pipelines. By injecting or extracting the oily medium 215 into the movable chamber 214 through the external hydraulic equipment, the oil pressure in the movable chamber 214 can be adjusted, thereby controlling the radial expansion and surface hardness of the elastic contact layer 213.

[0041] The smoothing mechanism 230 includes a smoothing ring 2310 movably sleeved on the shaft 211 and a drive assembly 2320 connected to the smoothing ring 2310 and capable of driving it to move axially. The inner diameter of the smoothing ring 2310 is slightly larger than the outer diameter of the shaft 211, and it can slide freely along the axial direction of the shaft 211. The outer edge of the smoothing ring 2310 protrudes outward and presses the elastic contact layer 213, so that the elastic contact layer 213 generates an outward radial bulge at the protruding position and contacts the corrosion foil, thereby making the outer surface of the elastic contact layer 213 form a tighter contact with the corrosion foil in this local area. When the smoothing ring 2310 moves axially, it smooths the surface of the corrosion foil. The oily medium 215 can also form a lubricating protective film between the smoothing ring 2310 and the elastic contact layer 213.

[0042] The clamping module 3 includes a clamping roller 310 and a second telescopic mechanism 320 connected to the clamping roller 310 and capable of moving it closer to or away from the take-up roller 110. The clamping roller 310 is located downstream of the contact position between the contact roller 210 and the etched foil along the winding direction. When the second telescopic mechanism 320 is working, it can move the clamping roller 310 closer to or away from the take-up roller 110, pressing the smoothed etched foil tightly onto the take-up roller 110.

[0043] When the winding system is in operation, the etched foil is conveyed from upstream to between the contact roller 210 and the take-up roller 110. The first telescopic mechanism 220 drives the contact roller 210 to approach the take-up roller 110, so that the elastic contact layer 213 contacts the surface of the etched foil; the external hydraulic equipment adjusts the oil pressure in the movable chamber 214 to a suitable value through the oil pipe 216. The drive assembly 2320 drives the smoothing ring 2310 to move axially. The outer edge of the smoothing ring 2310 protrudes and squeezes the elastic contact layer 213 to form a local high-pressure area. This high-pressure area moves dynamically with the movement of the smoothing ring 2310, gradually smoothing the surface of the etched foil from the center to the edge. After the smoothing treatment, the etched foil enters the take-up roller 110 for winding. At the same time, the clamping roller 310, driven by the second telescopic mechanism 320, approaches the take-up roller 110 to press the layers of the wound etched foil tightly, ensuring tight and neat winding.

[0044] To facilitate control of the smoothing effect, in a further implementation, such as Figure 3 , Figure 5 As shown, the smoothing ring 2310 has an annular groove 2311 on its outer side and is connected to an elastic abutment layer 2312 surrounding the annular groove 2311. The cross-section of the annular groove 2311 can be rectangular, U-shaped or semi-circular. The elastic abutment layer 2312 is made of the same or similar elastic material as the elastic contact layer 213, such as rubber or polyurethane film. The elastic abutment layer 2312 and the annular groove 2311 form a pressure regulating space 2313 and are filled with a pressure regulating medium 2314. The pressure regulating medium 2314 is preferably compressed air or inert gas.

[0045] To improve the stability of the smoothing ring 2310 during movement, in a further embodiment, the shaft 211 is provided with a groove 218 parallel to its axis, and the inner side of the smoothing ring 2310 is provided with a slider 2315 extending into the groove 218. The shape of the slider 2315 is adapted to the cross-section of the groove 218. The slider 2315 is provided with a channel 2316 communicating with the pressure regulating space 2313. The side plate 212 is provided with an interface pipe 2317. A medium hose 2318 located in the groove 218 is connected between the interface pipe 2317 and the channel 2316. The medium hose 2318 is a flexible pipe that can be bent, such as a polyurethane pipe or a nylon pipe, and its length is sufficient to extend and bend with the axial movement of the slider 2315. The interface pipe 2317 is connected to an external air compressor, such as an air compressor or air pump, through a rotary joint and a pipe.

[0046] When an external air compressor injects pressure regulating medium 2314 into the pressure regulating space 2313 through interface pipe 2317, medium hose 2318, and channel 2316, the pressure inside the pressure regulating space 2313 increases, causing the elastic contact layer 2312 to bulge outward and expand, increasing its pressure on the inner wall of the elastic contact layer 213, thereby enhancing the smoothing effect. When it is necessary to reduce the smoothing pressure, the pressure regulating medium 2314 is extracted from the pressure regulating space 2313 through the external air compressor, and the elastic contact layer 2312 retracts under its own elasticity, reducing the pressure on the elastic contact layer 213.

[0047] To achieve a smoothing effect smoothly, in a further embodiment, the smoothing ring 2310 is provided in two sets, both with the same structure, and symmetrically movably sleeved on the shaft 211. The driving component 2320 synchronously drives the two smoothing rings 2310 to move closer or further away. When moving away, the medium is input into the pressure regulating space 2313, and the increased pressure causes the elastic abutment layer 2312 to squeeze the elastic contact layer 213 for smoothing. When moving closer, the medium is output from the pressure regulating space 2313, and the reduced pressure avoids squeezing and wrinkles.

[0048] To achieve synchronous driving effect, such as Figure 3 , Figure 6 As shown, the shaft 211 is also provided with a transmission groove 217 parallel to its axis. The drive assembly 2320 includes a transmission block 2321 disposed inside the smoothing ring 2310 and extending into the transmission groove 217, a transmission screw 2322 rotatably disposed in the transmission groove 217, and a drive motor 2323 fixed to the end of the shaft 211. The transmission screw 2322 is provided with opposite threads at both ends and is threadedly engaged with the two transmission blocks 2321 respectively. One end of the screw passes through the side plate 212 and is connected to the drive motor 2323. The oily medium 215 is also filled in the transmission groove 217, which can lubricate the transmission screw 2322.

[0049] When the drive motor 2323 rotates forward, the transmission screw 2322 rotates. Under the action of the reverse threads at both ends, the two transmission blocks 2321 drive the two smoothing rings 2310 to move in opposite directions. That is, the first smoothing ring 2310 moves towards the left side plate 212, and the second smoothing ring 2310 moves towards the right side plate 212, with the two smoothing rings 2310 moving away from each other. At the same time, the external air compressor inputs the pressure regulating medium 2314 into the pressure regulating space 2313 through the interface pipe 2317, which increases the pressure in the pressure regulating space 2313. The elastic contact layer 2312 bulges outward and squeezes the elastic contact layer 213. As the two smoothing rings 2310 move towards the two side plates 212 respectively, they continuously squeeze the elastic contact layer 213, thereby applying a smoothing force from the center to both sides to the surface of the etched foil.

[0050] When the drive motor 2323 reverses, the two smoothing rings 2310 move towards each other and approach the middle area of ​​the contact roller 210. During this process, the external air compressor outputs the pressure regulating medium 2314 from the pressure regulating space 2313 through the interface pipe 2317, reducing the pressure in the pressure regulating space 2313 to a level that does not produce effective compression. The elastic contact layer 2312 retracts and does not compress the elastic contact layer 213, thereby avoiding reverse wrinkling on the surface of the etched foil caused by the compression of the elastic contact layer 213 by the smoothing rings 2310 during the return stroke.

[0051] In order to enable continuous smoothing work, in a further implementation, such as Figure 1 , Figure 2 As shown, the first telescopic mechanism 220 is connected to a bracket 221. The bracket 221 is provided with two rotating frames 222 and coaxially connected to a rotating shaft 223. The bracket 221 is provided with a power control component 224 that can drive the rotating shaft 223 to rotate and brake. Multiple smoothing mechanisms 230 are rotatably connected to the rotating frames 222 and are evenly distributed around the rotating shaft 223. In this embodiment, there are four smoothing mechanisms 230.

[0052] In the initial state, the smoothing rings 2310 in the multiple contact rollers 210 are all located in the middle of the contact rollers 210. One of the contact rollers 210 contacts the etched foil to perform smoothing work. When the smoothing ring 2310 in the contact roller 210 moves to its end, the rotating frame 222 rotates, so that the contact roller 210 gradually moves away from the etched foil, and the adjacent contact roller 210 takes over to perform smoothing work. After the smoothing ring 2310 moves away, it resets itself, thus realizing continuous smoothing work.

[0053] To protect the etched foil, in a further embodiment, such as Figure 2 As shown, the rotating frame 222 is provided with radial elastic elements 2210 evenly distributed around the circumference of the rotating shaft 223, and each radial elastic element 2210 is connected to a smoothing mechanism 230;

[0054] Specifically, such as Figure 4As shown, the radial elastic element 2210 includes a cylindrical body 2211 connected to the rotating frame 222, and a support arm 2213 extending into the cylindrical body 2211 and connected to it via a first elastic element 2212. The support arm 2213 is connected to the smoothing mechanism 230. The first elastic element 2212 is also connected to a pressure sensor 2216 located on the bottom wall of the cylindrical body 2211. The first elastic element 2212 can be a helical spring or a disc spring. One end of the first elastic element 2212 abuts against the sensing surface of the pressure sensor 2216. When the support arm 2213 is subjected to a reaction force from the smoothing mechanism 230, the force is transmitted to the pressure sensor 2216 through the first elastic element 2212. The pressure sensor 2216 outputs an electrical signal to the control system to realize real-time monitoring and closed-loop control of the smoothing pressure.

[0055] To further improve adaptability to local morphology of the etched foil surface, the end of the cylinder 2211 away from the smoothing mechanism 230 is rotatably connected to the rotating frame 222, with its rotation axis parallel to the rotating shaft 223. The rotating frame 222 is equipped with baffles 225 located on both sides of the cylinder 2211. The baffles 225 are connected to the sides of the cylinder 2211 via a second elastic element 226. When the contact roller 210 connected to the cylinder 2211 encounters a local height change on the etched foil surface, the cylinder 2211 can swing slightly around its rotation axis. The second elastic element 226 provides a restoring force and buffers the swing amplitude, allowing the contact roller 210 to better conform to the etched foil surface.

[0056] To facilitate precise control of the force between the contact roller 210 and the etching foil, in a further embodiment, the bottom wall of the cylinder 2211 is also provided with an electromagnet 2214, and the end of the support arm 2213 located inside the cylinder 2211 is provided with a magnetic block 2215. The magnetic block 2215 is made of permanent magnet or ferromagnetic material and is arranged opposite to the electromagnet 2214. When the electromagnet 2214 is energized, it generates an electromagnetic force that attracts or repels the magnetic block 2215, which can help adjust the extension and retraction position of the support arm 2213 inside the cylinder 2211, thereby realizing micro-active adjustment of the smoothing pressure. By cooperating with the feedback signal of the pressure sensor 2216, a high-precision force closed-loop control system can be constructed to further improve the control accuracy of the smoothing pressure.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A winding system for producing etched foil, characterized in that, include: The winding module (1) includes a winding roller (110) and a power mechanism (120) detachably connected to the winding roller (110) and used to drive its rotation. The smoothing module (2) includes a contact roller (210) arranged parallel to the winding module (1) and freely rotatable, a first telescopic mechanism (220) connected to the contact roller (210) and capable of moving it closer to or away from the winding roller (110), and a smoothing mechanism (230) disposed on the contact roller (210). The contact roller (210) includes a shaft (211), side plates (212) coaxially fixed at both ends of the shaft (211) and having a larger diameter, and an elastic contact layer (213) connected between the two side plates (212). The shaft (211), the side plates (212), and the elastic contact layer (213) are... An active chamber (214) is formed between the two sides and filled with an oily medium (215). An oil pipe (216) communicating with the active chamber (214) is provided on the side plate (212). The smoothing mechanism (230) includes a smoothing ring (2310) movably sleeved on the shaft (211) and a drive assembly (2320) connected to the smoothing ring (2310) and capable of driving it to move axially. The outer edge of the smoothing ring (2310) protrudes outward and squeezes the elastic contact layer (213), so that the elastic contact layer (213) contacts the corrosion foil. When the smoothing ring (2310) moves axially, it smooths the surface of the corrosion foil. The clamping module (3) includes a clamping roller (310) and a second telescopic mechanism (320) connected to the clamping roller (310) and capable of moving it closer to or away from the take-up roller (110). The clamping roller (310) is located downstream of the contact roller (210) and the contact position of the etched foil along the take-up direction.

2. The etching foil production and winding system according to claim 1, characterized in that, The smoothing ring (2310) has an annular groove (2311) on its outer side and is connected to an elastic abutment layer (2312) surrounding the annular groove (2311). The elastic abutment layer (2312) and the annular groove (2311) form a pressure regulating space (2313) and are filled with a pressure regulating medium (2314).

3. The etching foil production and winding system according to claim 2, characterized in that, The shaft (211) is provided with a groove (218) parallel to its axis. The inner side of the smoothing ring (2310) is provided with a slider (2315) extending into the groove (218). The slider (2315) is provided with a channel (2316) communicating with the pressure regulating space (2313). The side plate (212) is provided with an interface pipe (2317). The interface pipe (2317) and the channel (2316) are connected to a medium hose (2318) located in the groove (218).

4. The etching foil production and winding system according to claim 2, characterized in that, The smoothing ring (2310) is provided in two sets. The driving component (2320) synchronously drives the two smoothing rings (2310) to move closer or further away. When they move away, the medium is input into the pressure regulating space (2313), and the pressure increases, causing the elastic contact layer (2312) to squeeze the elastic contact layer (213) for smoothing. When they move closer, the medium is output into the pressure regulating space (2313), and the pressure decreases to avoid squeezing and wrinkling.

5. The etching foil production winding system according to claim 4, characterized in that, The shaft (211) is also provided with a transmission groove (217) parallel to its axis. The drive assembly (2320) includes a transmission block (2321) disposed inside the smoothing ring (2310) and extending into the transmission groove (217), a transmission screw (2322) rotatably disposed in the transmission groove (217), and a drive motor (2323) fixed at the end of the shaft (211). The transmission screw (2322) is provided with opposite threads at both ends and is threadedly engaged with the two transmission blocks (2321) respectively. One end of the screw passes through the side plate (212) and is connected to the drive motor (2323) for transmission.

6. A rewinding system for producing etched foil according to any one of claims 1-5, characterized in that, The first telescopic mechanism (220) is connected to a bracket (221). The bracket (221) is provided with two rotating frames (222) and a rotating shaft (223) is coaxially connected to them. The bracket (221) is provided with a power control component (224) that can drive the rotating shaft (223) to rotate and brake. The rotating frame (222) is rotatably connected with a plurality of smoothing mechanisms (230) evenly distributed around the rotating shaft (223).

7. The etching foil production winding system according to claim 6, characterized in that, The rotating frame (222) is provided with radial elastic elements (2210) evenly distributed around the circumference of the rotating shaft (223), and each radial elastic element (2210) is connected to a smoothing mechanism (230).

8. The etching foil production winding system according to claim 7, characterized in that, The radial elastic element (2210) includes a cylinder (2211) connected to the rotating frame (222), a support arm (2213) extending into the cylinder (2211) and connected to it via a first elastic element (2212), the support arm (2213) being connected to the smoothing mechanism (230), and the first elastic element (2212) also being connected to a pressure sensor (2216) located on the bottom wall of the cylinder (2211).

9. A foil production winding system according to claim 8, characterized in that, The end of the cylinder (2211) away from the smoothing mechanism (230) is rotatably connected to the rotating frame (222), and its rotation axis is parallel to the rotating shaft (223). The rotating frame (222) is provided with baffles (225) on both sides of the cylinder (2211), and the baffles (225) are connected to the side of the cylinder (2211) through a second elastic element (226).

10. A foil production winding system according to claim 8, characterized in that, The bottom wall of the cylinder (2211) is also provided with an electromagnet (2214), and the end of the support arm (2213) located inside the cylinder (2211) is provided with a magnetic block (2215).

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