A water squeezing and pressing roller device for a green foil machine

Abstract

The utility model relates to electrolytic copper foil production equipment technical field discloses a kind of water-pressing roller devices of green foil machine, comprising: first roller group and second roller group;By the second roller body is set with inclination angle relative to first roller body, so that the connecting line direction of two roller cores and the out roller direction of copper foil tape form an inclination included angle greater than 90 ° and less than 180 °;When copper foil tape passes through water-pressing gap, its running direction and the extrusion direction of second roller body no longer coincide, effectively separate copper foil tape tension direction and extrusion direction, to reduce the complex force suffered by copper foil at water-pressing point, it is favorable to avoid the copper foil wrinkle or micro crack caused by force concentration, improve copper foil tape surface quality, significantly improve the dehydration efficiency of water-pressing roller device and the quality of copper foil finished product, solve the uneven water-pressing, copper foil easy damage problem existing in prior art, with good industrial application prospect.

Description

Technical Field

[0001] This utility model relates to the technical field of electrolytic copper foil production equipment, specifically to a dewatering roller device for a foil production machine. Background Technology

[0002] With the rapid development of the new energy industry, power batteries and energy storage batteries have placed higher demands on the performance of electrode materials, especially ultra-thin copper foil used as the negative electrode current collector in batteries, whose thickness has been developing towards 6μm, 4.5μm and even thinner. To ensure the stability of subsequent coating and winding processes, the copper foil needs to undergo a water-squeezing process during production to remove residual moisture from the surface and ensure uniform moisture content.

[0003] Traditional dewatering mechanisms typically employ a vertically arranged pair of rollers to extrude and dehydrate copper foil. In this structure, when the copper foil leaves the roller surface at the dewatering point, it is subjected to the combined effects of lateral tension and extrusion from the tension control system, which easily leads to wrinkles or micro-cracks on the copper foil surface, especially noticeable when processing ultra-thin copper foil. Furthermore, some existing devices use a side-roller extrusion method, achieving dewatering by guiding the flow to one side. However, this method tends to cause moisture to accumulate on one side of the copper foil, resulting in significantly higher residual moisture levels at the edges compared to the center. Actual measurements show that the residual moisture value at the edges is generally about 3% to 5% higher than that at the center, which does not meet the requirements of copper foil production processes. Utility Model Content

[0004] This invention provides a dewatering roller device for a copper foil production machine to solve the problems of poor water dewatering uniformity and easy wrinkling or micro-cracks in copper foil during the extrusion process in the prior art.

[0005] This utility model provides a dewatering roller device for a copper foil machine, comprising: a first roller group and a second roller group; the first roller group is provided with a first roller body; the second roller group is provided with a second roller body, the second roller body being arranged parallel to the first roller body, and a dewatering gap being formed between the first roller body and the second roller body; the copper foil strip is wound around the first roller body from bottom to top, passes through the dewatering gap, and moves along the tangential direction of the upper roller surface of the first roller body; the second roller body is adapted to squeeze the copper foil strip; the line connecting the roller cores of the first roller body and the second roller body forms an inclined angle with the exit direction of the copper foil strip. And the range of the tilt angle is: .

[0006] Beneficial effects: This application provides a dewatering roller device for a copper foil machine. By setting the second roller at an inclined angle relative to the first roller, an angle greater than 90° and less than 180° is formed between the line connecting the two roller cores and the exit direction of the copper foil strip. This inclined angle ensures that the copper foil strip's running direction no longer coincides with the direction of the extrusion force applied by the second roller as it passes through the dewatering gap. This effectively separates the tension direction and the extrusion force direction of the copper foil strip, reducing the combined force on the copper foil at the dewatering point. This helps avoid wrinkles or micro-cracks in the copper foil strip caused by concentrated force, improving the surface quality of the copper foil strip. The inclined second roller performs oblique extrusion on the copper foil strip, providing a larger flow path for the water after extrusion, thus facilitating rapid and effective water removal, improving the dewatering effect and dehydration uniformity, and enhancing the quality of subsequent processes. This application significantly improves the dewatering efficiency of the squeezing roller device and the quality of the finished copper foil by improving the roller structure and its relative arrangement. It solves the problems of uneven squeezing and easy damage to copper foil in the prior art and has good prospects for industrial application.

[0007] According to some embodiments of the present invention, the second roller group is further provided with a first adjustment component, which drives the second roller body to slide along the line connecting the roller core of the first roller body and the roller core of the second roller body to adjust the width of the squeezing gap.

[0008] According to some embodiments of the present invention, the first roller group includes two first mounting bases, two first bearing assemblies respectively disposed on the two first mounting bases, and the two ends of the first roller body are respectively connected to the two first bearing assemblies in a transmission manner. The second roller assembly includes two second mounting bases and two second bearing assemblies. The second mounting bases are fixedly connected to the first mounting base, and the second bearing assemblies are connected to the second mounting bases through the first adjusting assembly. The two ends of the second roller body are respectively drivenly connected to the two second bearing assemblies.

[0009] According to some embodiments of the present invention, the first adjustment component includes: An adjustment bracket is fixedly mounted on the second mounting base, which is horizontally positioned. The height direction of the adjustment bracket forms an inclined angle with the horizontal direction of the second mounting base. ; An adjusting block slides along the height direction of the adjusting frame, and one end of the adjusting block is connected to the second bearing assembly; A first driving member is disposed on the adjustment frame. The driving end of the first driving member is connected to the other end of the adjustment block. The first driving member drives the adjustment block to slide along the height direction of the adjustment frame, thereby driving the second bearing assembly to move, so as to adjust the squeezing gap between the first roller and the second roller.

[0010] According to some embodiments of the present invention, the adjustment frame is provided with a sliding groove structure along its height direction, and the two sides of the adjustment block are slidably disposed in the sliding groove structure, and the first driving member drives the adjustment block to slide in the sliding groove structure.

[0011] According to some embodiments of the present invention, the first driving component is a driving cylinder.

[0012] According to some embodiments of the present invention, the first adjustment assembly further includes a detection element and a controller. The detection element and the first drive member are both communicatively connected to the controller. The detection element is disposed between the first drive member and the adjustment block. The detection element is adapted to detect the pressure parameters at both ends of the second roller and feed them back to the controller. The controller controls the feed amount at the drive end of the first drive member in real time through the pressure parameters to adjust the width of the squeezing gap.

[0013] According to some embodiments of the present invention, the second roller group further includes a second adjusting component, which is disposed on the second mounting base. One end of the second adjusting component abuts against the second bearing assembly. The second adjusting component slides in the horizontal direction to facilitate pushing the second bearing assembly to slide along the line connecting the roller core of the first roller body and the roller core of the second roller body.

[0014] According to some embodiments of the present invention, the second adjustment component includes: A guide rail is mounted on the second mounting base, and the length direction of the guide rail is horizontal. An adjusting ramp is slidably disposed on the guide rail, and the inclined surface of the adjusting ramp is adapted to abut against the second bearing assembly; The second driving member has its driving end connected to the adjusting slant block. The second driving member drives the adjusting slant block to slide along the length direction of the guide rail, thereby pushing the second bearing assembly to slide along the line connecting the roller core of the first roller body and the roller core of the second roller body.

[0015] According to some embodiments of the present invention, the second driving component is an adjusting bolt. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a layout diagram of a dewatering roller device for a foil making machine provided in some embodiments of the present invention; Figure 2 This is a schematic diagram of the structure of the second roller group provided in some embodiments of the present invention; Figure 3 This is a schematic diagram of the installation structure of the first adjustment component and the second mounting base provided in some embodiments of the present invention; Figure 4 for Figure 3 A partial schematic diagram of point A in the diagram; Figure 5 This is a schematic diagram illustrating the force distribution principle of the copper foil strip at the water-squeezing gap in some embodiments of this utility model.

[0018] Explanation of reference numerals in the attached figures: 1. First roller group; 11. First roller body; 12. First mounting base; 2. Second roller group; 21. Second roller body; 22. Second mounting base; 23. Second bearing assembly; 24. First adjusting assembly; 25. Second adjusting assembly; 241. Adjusting frame; 242. Adjusting block; 243. First driving component; 251. Guide rail; 252. Adjusting inclined block; 253. Second driving component. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] Reference Figure 1 and Figure 5 As shown, in Figure 1 In the image, the arrow indicates the direction of travel of the copper foil strip. Figure 2In this invention, F1 represents the squeezing force of the second roller 21 on the copper foil strip, and F2 represents the tension at the winding end. The invention provides a dewatering roller device for a copper foil production machine, comprising: a first roller group 1 and a second roller group 2; the first roller group 1 is provided with a first roller body 11; the second roller group 2 is provided with a second roller body 21, which is arranged parallel to the first roller body 11, and a dewatering gap is formed between the first roller body 11 and the second roller body 21; the copper foil strip is wound around the first roller body 11 from bottom to top, passes through the dewatering gap, and moves along the tangential direction of the upper roller surface of the first roller body 11; the second roller body 21 is adapted to squeeze the copper foil strip; the line connecting the roller core of the first roller body 11 and the roller core of the second roller body 21 forms an inclined angle with the exit direction of the copper foil strip. And the range of values ​​for the included angle of inclination is: .

[0021] Specifically, this application provides a dewatering roller device for a copper foil machine. By setting the second roller 21 at an inclined angle relative to the first roller 11, an angle greater than 90° and less than 180° is formed between the line connecting the two roller cores and the exit direction of the copper foil strip. This inclined angle ensures that the copper foil strip's running direction no longer coincides with the direction of the extrusion force applied by the second roller 21 when passing through the dewatering gap. This effectively separates the tension direction and the extrusion force direction of the copper foil strip, thereby reducing the combined force on the copper foil at the dewatering point. This helps avoid wrinkles or micro-cracks in the copper foil strip caused by concentrated force, improving the surface quality of the copper foil strip. The inclined second roller 21 performs oblique extrusion on the copper foil strip, providing a larger flow path for the water after extrusion, thus facilitating rapid and effective water removal, improving the dewatering effect and dehydration uniformity, and enhancing the quality of subsequent processes. This application significantly improves the dewatering efficiency of the squeezing roller device and the quality of the finished copper foil by improving the roller structure and its relative arrangement. It solves the problems of uneven squeezing and easy damage to copper foil in the prior art and has good prospects for industrial application.

[0022] It is understandable that both the first roller 11 and the second roller 21 are cylindrical roller structures. Cylindrical rollers possess consistent curvature and good axial symmetry, enabling them to form a stable line contact relationship with the copper foil strip during contact. This facilitates the application of uniform extrusion pressure, improving the consistency of the dewatering effect and dehydration efficiency. The uniform force distribution of the cylindrical rollers avoids the occurrence of localized pressure concentration points, effectively reducing irregular deformation of the copper foil during the extrusion process, lowering the risk of wrinkles, cracks, or uneven tension, and improving the yield of copper foil products.

[0023] Specifically, the preferred range for the tilt angle is 120°. A 120° tilt angle maintains sufficient extrusion pressure while effectively preventing the extrusion pressure direction from completely coinciding with or completely opposing the copper foil tension direction, thereby dispersing the force, reducing the peak pressure per unit area of ​​the copper foil strip, and improving the stability of the dewatering process and the deformation control capability of the copper foil strip.

[0024] Reference Figure 2 and Figure 3 As shown, in some embodiments of this utility model, the second roller group 2 is further provided with a first adjustment component 24. The first adjustment component 24 drives the second roller body 21 to slide along the line connecting the roller core of the first roller body 11 and the roller core of the second roller body 21 to adjust the width of the squeezing gap.

[0025] Specifically, by setting a first adjustment component 24 in the second roller group 2, the second roller body 21 can slide along the line connecting the roller cores of the first roller body 11 and the second roller body 21, thereby achieving flexible adjustment of the squeezing gap width. The first adjustment component 24 can adjust the squeezing gap in real time according to the different thicknesses, moisture contents, and operating conditions of the copper foil strip, making the squeezing pressure controllable. This helps to maintain a stable squeezing effect under different working conditions and improves the process adaptability of the equipment. By finely adjusting the squeezing gap, the uneven pressing phenomenon that occurs during the squeezing process can be effectively reduced, avoiding local overpressure or underpressure. This is conducive to the uniform removal of moisture from the copper foil strip, improving the consistency of copper foil dryness, and optimizing product quality.

[0026] Understandably, the adjusting components enable more precise gap adjustment, preventing excessive pressure on the copper foil strip due to excessively small gaps, which could lead to microcracks or wrinkles, thereby improving the mechanical strength and surface integrity of the copper foil products. The first adjusting component 24, by enabling adjustable control of the position of the second roller 21, further enhances the flexibility, stability, and process precision of the squeezing roller device in the copper foil production process, demonstrating significant technical advantages and excellent industrial application value.

[0027] According to some embodiments of this utility model, the dewatering roller device of the foil making machine is suitable for the dewatering process of ultra-thin lithium battery copper foil with tensile strength ≤250Mpa. Using the dewatering roller device of the foil making machine, the uniformity of copper foil moisture content is improved to within ±0.5%, the production speed of 6μm copper foil is increased to 25m / min, and there are no wrinkles; the dynamic adjustment response time of dewatering pressure is <50ms.

[0028] In some embodiments of this utility model, the first roller group 1 includes two first mounting bases 12, two first bearing assemblies respectively disposed on the two first mounting bases 12, and the two ends of the first roller body 11 are respectively connected to the two first bearing assemblies in a transmission manner. The second roller group 2 includes two second mounting bases 22 and two second bearing assemblies 23. The second mounting bases 22 are fixedly connected to the first mounting base 12. The second bearing assemblies 23 are connected to the second mounting bases 22 through the first adjusting assembly 24. The two ends of the second roller body 21 are respectively connected to the two second bearing assemblies 23 for transmission.

[0029] Specifically, by optimizing the specific structure of the first roller group 1 and the second roller group 2, the first roller group 1 includes two first mounting bases 12 and a first bearing assembly mounted thereon to support the rotation of both ends of the first roller body 11; the second roller group 2 includes a second mounting base 22 fixedly connected to the first mounting base 12, and a second bearing assembly 23 connected to the second mounting base 22 through a first adjusting assembly 24 to support the second roller body 21.

[0030] Understandably, by fixing the second mounting base 22 to the first mounting base 12 to form an integral support frame, structural vibration and component displacement during operation can be effectively reduced, the rigidity and stability of the dewatering device can be improved, and the pressing accuracy of the copper foil strip under high tension and high speed operation can be ensured. The first roller 11 and the second roller 21 are supported and connected by bearing assemblies at both ends, which can maintain their coaxiality during operation and avoid uneven extrusion caused by off-center loading or tilting, thereby further improving the uniformity of dewatering and reducing surface defects of the copper foil.

[0031] It should be noted that the first bearing assembly and the second bearing assembly 23 have the same structure, both including a bearing base and a bearing cover plate. The bearing base is provided with a bearing groove, and a bearing is installed in the bearing groove. The bearing cover plate is placed on the bearing base. Both ends of the first roller body 11 and the second roller body 21 can be fitted with bearing cover plates to extend to rotatably connect with the bearing. According to some embodiments of the present invention, the first adjustment component 24 includes: an adjustment frame 241, an adjustment block 242, and a first driving member 243; the adjustment frame 241 is fixedly mounted on the second mounting base 22, the second mounting base 22 is horizontally arranged, and the height direction of the adjustment frame forms an inclined angle with the horizontal direction of the second mounting base 22. The adjusting block 242 slides along the height direction of the adjusting frame 241, and one end of the adjusting block 242 is connected to the second bearing assembly 23. The first driving member 243 is provided on the adjusting frame 241, and the driving end of the first driving member 243 is connected to the other end of the adjusting block 242. The first driving member 243 drives the adjusting block 242 to slide along the height direction of the adjusting frame 241, thereby driving the second bearing assembly 23 to move, so as to adjust the squeezing gap between the first roller body 11 and the second roller body 21.

[0032] Specifically, the height direction of the adjusting frame 241 forms an inclined angle θ with the horizontal direction of the second mounting base 22. When the adjusting block 242 slides along the height direction of the adjusting frame 241, the second bearing assembly 23 moves along the line connecting the first roller body 11 and the second roller body 21, thereby precisely controlling the squeezing gap between the two rollers and significantly improving the squeezing accuracy and stability. The adjusting block 242 is connected to the second bearing assembly 23 at one end and driven by the first driving member 243 at the other end, realizing a squeezing gap adjustment scheme with a simple structure and clear transmission link, which can effectively reduce the problem of copper foil indentation or cracking caused by untimely or inadequate gap adjustment.

[0033] It is understandable that by adopting a first drive element 243, such as an electric push rod, cylinder, or lead screw motor, precise control of the position of the adjusting block 242 can be achieved. This is suitable for integration into an automatic control system, facilitates the automated adjustment and real-time feedback of the dewatering process, and improves the intelligence level of the equipment.

[0034] In some embodiments of this utility model, the adjustment frame 241 is provided with a sliding groove structure along its height direction, and the two sides of the adjustment block 242 are slidably disposed in the sliding groove structure. The first driving member 243 drives the adjustment block 242 to slide in the sliding groove structure.

[0035] Specifically, by setting a groove structure in the height direction of the adjustment frame 241 and sliding the two sides of the adjustment block 242 within the groove structure, a sliding adjustment mechanism with good guidance is formed. The groove structure limits the movement direction of the adjustment block 242, effectively preventing it from deviating or swaying during sliding, ensuring that the second bearing assembly 23 moves stably along a predetermined trajectory, thereby accurately controlling the range and consistency of the squeezing gap.

[0036] It is understandable that the sliding groove structure and the adjusting block 242 are in surface or line contact, which can significantly reduce sliding resistance, improve adjustment response speed and drive transmission efficiency, avoid jamming and local wear problems, and extend the service life of the device. By integrating the sliding groove structure into the main body of the adjusting frame 241, the sliding adjustment mechanism structure is made more compact, reducing the complexity of the connection between components, improving the assembly efficiency and operational reliability of the overall device, and facilitating mass production and assembly.

[0037] The chute structure has good self-cleaning and visibility properties, making it easy to detect and maintain the wear condition of the sliding pair. At the same time, a lubrication structure can be set in the chute according to actual use requirements to further improve the structural durability and operational stability.

[0038] In some embodiments of this utility model, the first adjustment component 24 further includes a detection element and a controller. The detection element and the first drive member 243 are both communicatively connected to the controller. The detection element is located between the first drive member 243 and the adjustment block 242. The detection element is adapted to detect the pressure parameters at both ends of the second roller body 21 and feed them back to the controller. The controller controls the feed amount at the drive end of the first drive member 243 in real time through the pressure parameters to adjust the width of the squeezing gap.

[0039] Specifically, by setting a detection element and a controller in the first adjustment component 24, the detection element can detect the pressure parameters at both ends of the second roller 21 and feed these parameters back to the controller. The controller then adjusts the feed rate of the first drive component 243 in real time based on the detection results. The detection element monitors the pressure applied to the copper foil strip at both ends of the second roller 21 in real time, and the controller automatically adjusts the action of the first drive component 243 based on the detection data. This allows the dewatering gap to dynamically respond to changes in the copper foil's operating state, maintaining optimal pressing and improving the intelligence and stability of the dewatering process. Real-time detection of the pressure at both ends effectively avoids uneven stress on the copper foil caused by inconsistent gaps between the left and right ends, reducing problems such as copper foil wrinkles, curling edges, or localized micro-cracks, and significantly improving the flatness and overall quality of the copper foil strip.

[0040] Understandably, when changes occur in copper foil thickness, tension, or running speed, the controller can instantly correct the drive commands based on feedback from the detection elements, automatically adjusting the squeezing pressure and gap to effectively adapt to dehydration requirements under different process conditions, avoiding human intervention and improving production efficiency. By replacing traditional manual observation and mechanical adjustment with an electronic detection and automatic control system, adjustment errors caused by insufficient human experience or misoperation are avoided, achieving high-precision and highly consistent squeezing pressure control.

[0041] Reference Figure 3 and Figure 4 As shown, in some embodiments of the present invention, the second roller group 2 further includes a second adjustment component 25, which is disposed on the second mounting base 22. One end of the second adjustment component 25 abuts against the second bearing assembly 23. The second adjustment component 25 slides in the horizontal direction to facilitate pushing the second bearing assembly 23 to slide along the line connecting the roller core of the first roller body 11 and the roller core of the second roller body 21.

[0042] Specifically, by setting a second adjusting component 25 in the second roller group 2 and mounting it on the second mounting base 22, the second bearing assembly 23 is pushed to slide along the line connecting the roller cores of the first roller body 11 and the second roller body 21 in a horizontal sliding manner, thus forming a simple and responsive fine-tuning mechanism. The second adjusting component 25 slides horizontally, forming an effective force component relationship with the line connecting the two roller cores. The second adjusting component 25 can directly act on the second bearing assembly 23, achieving efficient and stable displacement control.

[0043] The second adjustment component 25 can work in conjunction with the first adjustment component 24 to form a bidirectional adjustable or independently adjustable structure, making the adjustment process more flexible. The squeezing gap can be finely adjusted according to specific process needs, improving the system's adaptability and precision control capabilities.

[0044] It is understandable that by setting independent second adjustment components 25 on the two second mounting bases 22 respectively, the two second bearing assemblies 23 can be finely adjusted, which helps to ensure that the axis of the second roller 21 remains parallel and the force is balanced, avoiding stress concentration and defects in the copper foil caused by extrusion eccentricity.

[0045] In some embodiments of this utility model, the second adjustment component 25 includes: a guide rail 251, an adjustment ramp 252, and a second driving member 253; the guide rail 251 is disposed on the second mounting base 22, and the length direction of the guide rail 251 is arranged in the horizontal direction; the adjustment ramp 252 is slidably disposed on the guide rail 251, and the inclined surface of the adjustment ramp 252 is adapted to abut against the second bearing assembly 23; the driving end of the second driving member 253 is connected to the adjustment ramp 252 in a transmission manner, and the second driving member 253 drives the adjustment ramp 252 to slide along the length direction of the guide rail 251, so as to push the second bearing assembly 23 to slide along the line connecting the roller core of the first roller body 11 and the roller core of the second roller body 21.

[0046] Specifically, the second adjustment component 25 is constructed as an inclined plane transmission structure consisting of a guide rail 251, an adjusting inclined block 252, and a second driving component 253. This allows the second driving component 253 to drive the adjusting inclined block 252 to slide along the guide rail 251 and, with the help of the inclined plane, to abut against the second bearing assembly 23, thereby achieving precise adjustment of the position of the second roller body 21. Specifically, the adjusting inclined block 252 slides in the horizontal direction, and its inclined surface effectively converts the horizontal driving force into a vertical component force along the line connecting the two roller cores, thereby driving the second bearing assembly 23 to move precisely. This results in a clear force transmission path, high mechanical efficiency, and adjustment accuracy superior to traditional screw pairs or push-pull structures.

[0047] Understandably, the inclined plane transmission system possesses excellent self-locking and force decomposition characteristics, ensuring a smooth and reliable adjustment process. It is less prone to displacement rebound due to external disturbances, making it suitable for maintaining a stable gap under high-pressure dewatering conditions, thus guaranteeing the stability of copper foil operation and the uniformity of dewatering. By directly mounting the guide rail 251 onto the second mounting base 22 and engaging it with the adjusting inclined block 252, the system boasts a compact layout and high integration, facilitating miniaturization and modular assembly of the overall equipment and improving manufacturing and installation efficiency.

[0048] In some embodiments of this utility model, the second driving member 253 is an adjusting bolt.

[0049] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A dewatering roller device for a foil-making machine, characterized in that, include: The first roller group (1) is provided with a first roller body (11); The second roller group (2) is provided with a second roller body (21), the second roller body (21) is arranged parallel to the first roller body (11), and a water squeezing gap is formed between the first roller body (11) and the second roller body (21); The copper foil strip is wound around the first roller body (11) from bottom to top, passes through the squeezing gap, and moves along the tangential direction of the upper roller surface of the first roller body (11). The second roller body (21) is adapted to squeeze the copper foil strip. The line connecting the roller core of the first roller body (11) and the roller core of the second roller body (21) forms an inclined angle with the exit direction of the copper foil strip. And the range of the tilt angle is: .

2. The foil-making machine dewatering roller device according to claim 1, characterized in that, The second roller group (2) is also provided with a first adjustment component (24), which drives the second roller body (21) to slide along the line connecting the roller core of the first roller body (11) and the roller core of the second roller body (21) to adjust the width of the squeezing gap.

3. The foil-making machine dewatering roller device according to claim 2, characterized in that, The first roller group (1) includes two first mounting bases (12), two first bearing assemblies respectively disposed on the two first mounting bases (12), and the two ends of the first roller body (11) are respectively connected to the two first bearing assemblies in a transmission connection. The second roller group (2) includes two second mounting bases (22) and two second bearing assemblies (23). The second mounting bases (22) are fixedly connected to the first mounting base (12). The second bearing assemblies (23) are connected to the second mounting bases (22) through the first adjusting assembly (24). The two ends of the second roller body (21) are respectively connected to the two second bearing assemblies (23).

4. The foil-making machine dewatering roller device according to claim 3, characterized in that, The first adjustment component (24) includes: An adjustment bracket (241) is fixedly mounted on the second mounting base (22), which is horizontally positioned. The height direction of the adjustment bracket and the horizontal direction of the second mounting base (22) form an inclined angle. ; The adjusting block (242) slides along the height direction of the adjusting frame (241), and one end of the adjusting block (242) is connected to the second bearing assembly (23); The first driving member (243) is disposed on the adjustment frame (241). The driving end of the first driving member (243) is connected to the other end of the adjustment block (242). The first driving member (243) drives the adjustment block (242) to slide along the height direction of the adjustment frame (241), thereby driving the second bearing assembly (23) to move, so as to adjust the squeezing gap between the first roller body (11) and the second roller body (21).

5. The foil-making machine dewatering roller device according to claim 4, characterized in that, The adjustment frame (241) is provided with a sliding groove structure along its height direction. The two sides of the adjustment block (242) are slidably disposed in the sliding groove structure. The first driving member (243) drives the adjustment block (242) to slide in the sliding groove structure.

6. The foil-making machine dewatering roller device according to claim 5, characterized in that, The first driving component (243) is a driving cylinder.

7. The foil-making machine dewatering roller device according to claim 4, characterized in that, The first adjustment component (24) further includes a detection element and a controller. The detection element and the first drive member (243) are both communicatively connected to the controller. The detection element is located between the first drive member (243) and the adjustment block (242). The detection element is adapted to detect the pressure parameters at both ends of the second roller (21) and feed them back to the controller. The controller controls the feed amount at the drive end of the first drive member (243) in real time through the pressure parameters to adjust the width of the squeezing gap.

8. The foil-making machine dewatering roller device according to claim 3, characterized in that, The second roller group (2) further includes a second adjustment component (25), which is disposed on the second mounting base (22). One end of the second adjustment component (25) abuts against the second bearing assembly (23). The second adjustment component (25) slides in the horizontal direction to push the second bearing assembly (23) to slide along the line connecting the roller core of the first roller body (11) and the roller core of the second roller body (21).

9. The foil-making machine dewatering roller device according to claim 8, characterized in that, The second adjustment component (25) includes: Guide rail (251), the guide rail (251) is disposed on the second mounting base (22), and the length direction of the guide rail (251) is arranged in the horizontal direction; An adjusting ramp (252) is slidably disposed on the guide rail (251), and the inclined surface of the adjusting ramp (252) is adapted to abut against the second bearing assembly (23); The second driving member (253) has its driving end connected to the adjusting block (252) in a transmission connection. The second driving member (253) drives the adjusting block (252) to slide along the length direction of the guide rail (251) so as to push the second bearing assembly (23) to slide along the line connecting the roller core of the first roller body (11) and the roller core of the second roller body (21).

10. The foil-making machine dewatering roller device according to claim 9, characterized in that, The second driving component (253) is an adjusting bolt.

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