A roller surface online flattening device and flattening method

Abstract

This application relates to the field of vacuum coating, specifically to an online roller flattening device and method. The online roller flattening device includes a flattening mechanism mounted on an arc-shaped mounting plate. The flattening mechanism includes a base mounted on the arc-shaped mounting plate, a spring arm rotatably mounted on the base, and rollers rotatably mounted on the spring arm. An elastic component is installed between the base and the spring arm. The rollers are respectively bonded to a process roller and a film. The online roller flattening method includes the following steps: S1, starting a motor, which drives a screw to rotate, which in turn moves a rotating seat, which in turn moves the flattening device, adjusting its position according to the film width; S2, moving an arc-shaped transmission plate, which in turn rotates the flattening device, adjusting the axial direction of the rollers. This application improves upon the problem of poor film flattening results.

Description

Technical Field

[0001] This application relates to the field of vacuum coating, and in particular to an online roller flattening device and method. Background Technology

[0002] Vacuum coating refers to the deposition of aluminum, zinc, magnesium, and other thin-film substrates in a vacuum environment. During the deposition process, the film is first unwound and transported via multiple rollers onto process rollers. Then, it is deposited through an evaporation boat and finally wound up by a take-up roller. If wrinkles exist or develop during film transport, the desired flattening effect cannot be achieved. Failure to eliminate these wrinkles promptly can lead to defects such as film breakage and uneven metal coating. Simultaneously, sputtering during evaporation can affect coating quality. For example, in aluminum coating, the aluminum composite current collector forms a metal film layer on the polymer base film surface through vacuum thermal evaporation. However, the aluminum wire is heated and evaporated within the evaporation boat, resulting in aluminum sputtering. This causes large particles to deposit on the film substrate surface, forming what is known in the field as bump defects.

[0003] In related technologies, when it is necessary to flatten a film, it is usually done by setting up spiral flattening rollers, arc flattening rollers, and edge flattening rollers. The structure of a spiral flattening roller is a metal roller with left and right threads. Its threads are relatively wide, the pitch is large, the groove depth is shallow, the threads are symmetrical, and the rotation direction is opposite. The working principle of the spiral flattening roller is that when the film comes into contact with the spiral threads, the inclined spiral threads will apply a lateral expansion force to the film, thus achieving the purpose of flattening the film. Edge flattening rollers are usually installed on the two edges of the film, with one set on each side. Each set consists of two short rollers, one roller is placed below the film and the other roller is placed above the film. The axes of the two rollers are parallel to each other and keep perpendicular to the direction of film movement. During operation, the two rollers press against each other, and the rollers are driven to rotate by the film, thus generating a lateral expansion tension force on both sides of the film, thereby achieving the purpose of flattening the film.

[0004] Regarding the aforementioned technologies, spiral flattening rollers, arc flattening rollers, and edge flattening rollers can only flatten the film between the rollers during the film flattening process, but cannot flatten the film already attached to the surface of the process roller, resulting in poor film flattening effect. Summary of the Invention

[0005] To improve the problem of poor film flattening effect, this application provides an online roller flattening device and a flattening method.

[0006] Firstly, the online roller surface flattening device provided in this application adopts the following technical solution:

[0007] A roller surface online flattening device includes a flattening device mounted on an arc-shaped mounting plate. The flattening device includes a base mounted on the arc-shaped mounting plate, a spring arm rotatably mounted on the base, and rollers rotatably mounted on the spring arm. An elastic component is installed between the base and the spring arm, and the rollers are respectively attached to a process roller and a film.

[0008] Multiple flattening devices are provided, with two flattening devices forming a group, and each group of flattening devices is symmetrically arranged on both sides of the process roller.

[0009] By adopting the above technical solution, during the operation of the process roller, the elastic component provides a continuous force to the elastic arm, so that the roller can press against the process roller and the film. The roller can fix and guide the film. At the same time, the roller can also flatten the film as it rotates with the process roller, thus improving the problem of poor film flattening effect.

[0010] Preferably, a rotating seat is mounted on the arc-shaped mounting plate, and the rotating seat is rotatably connected to the base.

[0011] By adopting the above technical solution, the base is rotated, which in turn drives the spring arm to rotate, and the spring arm drives the roller to rotate. This allows for adjustment of the roller's axial direction. When the angle between the roller's axial direction and the film's conveying direction is less than 90 degrees, the roller can apply an outward stretching force to the film, reducing wrinkles and achieving a flattened effect, further improving the problem of poor film flattening. When the angle between the roller's axial direction and the film's conveying direction is 90 degrees, the roller can fix and guide the film. When the angle between the roller's axial direction and the film's conveying direction is greater than 90 degrees, the roller can apply an inward stretching force to the film, causing it to converge inward to meet production requirements.

[0012] Preferably, the elastic component includes a fixed block fixedly connected to the elastic arm, a compression spring mounted on the fixed block, and a guide rod passing through the compression spring; the end of the compression spring away from the fixed block is connected to the base, and guide holes are provided on the end faces of the fixed block and the base, and the two ends of the guide rod are respectively inserted into the guide holes and extend to the outside of the guide holes, and limit blocks are fixedly connected to both ends of the guide rod.

[0013] By adopting the above technical solution, the compression spring can apply force to the fixed block, and the fixed block can apply force to the spring arm, so that the roller is in close contact with the process roller and the film. The guide rod can guide the compression spring, improve the service life of the compression spring, and at the same time, it can replace the compression spring with different elastic coefficients to change the tensile force on the film flattening, so as to meet the tensile force requirements of different film flattening.

[0014] Preferably, the elastic component includes a hydraulic rod hinged to the spring arm, with one end of the hydraulic rod away from the spring arm hinged to the base.

[0015] By adopting the above technical solution, the hydraulic rod applies force to the fixed block, and the fixed block applies force to the elastic arm, so that the roller is in close contact with the process roller and the film. By activating the hydraulic rod, the hydraulic rod drives the elastic arm to rotate, so that the angle between the elastic arm and the base changes, which can adapt to the tensile force requirements of different film flattening. At the same time, the hydraulic rod can be adjusted online in real time, which is convenient for operators.

[0016] Preferably, a sliding groove is provided on the inner arc surface of the arc-shaped mounting plate, the rotating seat is placed in the sliding groove and can slide along the sliding groove, and a driving component for driving the rotating seat to move is installed on the arc-shaped mounting plate.

[0017] By adopting the above technical solution, the drive component is activated, which drives the rotating seat to move. The rotating seat then drives the flattening device to move, thereby changing the position of the rollers. This allows the rollers to adapt to different film widths, making it easier for operators to carry out the work and saving processing costs.

[0018] Preferably, the driving component includes a motor fixedly connected to the inner wall of the sliding groove and a screw rotatably mounted on the inner wall of the sliding groove. The output shaft of the motor is fixedly connected to the screw, the screw passes through the rotating seat and is threadedly connected to the rotating seat, and the side wall of the rotating seat is in contact with the inner wall of the sliding groove.

[0019] By adopting the above technical solution, the motor is started, the motor drives the screw to rotate, the screw drives the rotating seat to move, and the rotating seat drives the rollers to move, which facilitates operation by the staff. At the same time, the movement of the rotating seat is relatively stable.

[0020] Preferably, the flattening device is provided in multiple sets along the tangent direction of the arc-shaped mounting plate, the rotating seat is rotatably connected to the rotating shaft, the rotating shaft is fixedly connected to the base, and the rotating seat is equipped with a transmission component for driving the rotating shaft to rotate.

[0021] By adopting the above technical solution, multiple rollers are distributed on both sides of the process roller, which makes the film flattening effect better. At the same time, the rotating shaft is rotated by the transmission component, which makes it easier for the staff to operate.

[0022] Preferably, the transmission component includes a transmission gear fixedly connected to the rotating shaft, an arc-shaped transmission plate slidably mounted on the rotating seat, and multiple teeth fixedly connected to the arc-shaped transmission plate, all of which can mesh with the transmission gear.

[0023] By adopting the above technical solution, the arc-shaped transmission plate is moved, which in turn drives multiple teeth to move, which in turn drives the transmission gear to rotate, and the transmission gear drives the rotating shaft to rotate, thus making the rotating shaft rotate, which facilitates operation by the staff.

[0024] Preferably, two adjacent arc-shaped transmission plates are fixedly connected.

[0025] By adopting the above technical solution, moving an arc-shaped transmission plate can drive multiple rotating shafts to rotate synchronously, which facilitates operation by staff.

[0026] Preferably, both ends of the process roller are wrapped with adhesive tape.

[0027] By adopting the above technical solution, the tape can contact the film and the roller respectively. The tape increases the friction between the process roller and the film, while protecting the roller and the process roller.

[0028] Secondly, the online flattening method for roller surfaces provided in this application adopts the following technical solution.

[0029] A method for online flattening of roller surfaces includes the following steps:

[0030] S1. Start the motor, the motor drives the screw to rotate, the screw drives the rotating seat to move, the rotating seat drives the flattening device to move, and adjust the position of the flattening device according to the width of the film.

[0031] S2. Move the arc-shaped transmission plate, which drives the flattening device to rotate, and adjust the axial direction of the roller.

[0032] When the angle between the axis of the roller and the conveying direction of the film is less than 90 degrees, the roller applies an outward tensile force to the film; when the angle between the axis of the roller and the conveying direction of the film is 90 degrees, the roller fixes and guides the film; when the angle between the axis of the roller and the conveying direction of the film is greater than 90 degrees, the roller applies an inward tensile force to the film.

[0033] At the same time, the arc-shaped transmission plate can drive the adjacent rotating shafts to rotate synchronously;

[0034] S3. Attach the film to the process roller and move the arc-shaped mounting plate so that the roller presses against the process roller and the film.

[0035] S4. Start the equipment body, the process roller rotates, the process roller drives the film to rotate, and at the same time the process roller drives the roller to rotate, the roller flattens the film.

[0036] By adopting the above technical solution, during the operation of the process roller, the roller can press against the process roller and the film. The roller rotates with the process roller. When the angle between the axis of the roller and the film conveying direction is less than 90 degrees, the roller can apply an outward stretching force to the film, reducing the occurrence of film wrinkles and achieving a flattening effect, thus improving the problem of poor film flattening. When the angle between the axis of the roller and the film conveying direction is 90 degrees, the roller can fix and guide the film. When the angle between the axis of the roller and the film conveying direction is greater than 90 degrees, the roller can apply an inward stretching force to the film, causing the film to move inward to meet production requirements.

[0037] In summary, this application includes at least one of the following beneficial technical effects:

[0038] 1. By setting up an elastic component and a roller, the elastic component provides a continuous force to the elastic arm during the operation of the process roller, so that the roller can press against the process roller and the film. The roller can fix and guide the film. At the same time, the roller can also flatten the film as it rotates with the process roller, thus improving the problem of poor film flattening effect.

[0039] 2. This application utilizes a rotating base to rotate the base, which in turn rotates the spring arm, which in turn rotates the roller. This allows for adjustment of the roller's axial direction. When the angle between the roller's axial direction and the film's conveying direction is less than 90 degrees, the roller applies an outward stretching force to the film, reducing wrinkles and achieving a flattened effect, thus improving the problem of poor film flattening. When the angle between the roller's axial direction and the film's conveying direction is 90 degrees, the roller can fix and guide the film. When the angle between the roller's axial direction and the film's conveying direction is greater than 90 degrees, the roller applies an inward stretching force to the film, causing it to converge inward to meet production requirements.

[0040] 3. This application sets up a fixed block, a compression spring, and a guide rod. The compression spring can apply force to the fixed block, and the fixed block can apply force to the spring arm, so that the roller is tightly attached to the process roller and the film. The guide rod can guide the compression spring, improve the service life of the compression spring, and at the same time, it can replace the compression spring with different elastic coefficients to change the tensile force on the film flattening, so as to meet the tensile force requirements of different film flattening. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the overall structure of the online roller flattening device according to an embodiment of this application.

[0042] Figure 2 This is a schematic diagram of the structure of the arc-shaped mounting plate according to an embodiment of this application.

[0043] Figure 3 This is a schematic diagram of the structure of the driving component according to an embodiment of this application.

[0044] Figure 4 This is a schematic diagram of the structure of the transmission component according to an embodiment of this application.

[0045] Figure 5 This is a schematic diagram of the flattening device according to an embodiment of this application.

[0046] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of this application.

[0047] Explanation of reference numerals in the attached drawings: 1. Process roller; 11. Belt; 2. Arc-shaped mounting plate; 21. Rotating seat; 211. Rotating shaft; 22. Sliding groove; 23. Drive component; 231. Motor; 232. Screw; 233. Limiting rod; 24. Transmission component; 241. Transmission gear; 242. Arc-shaped transmission plate; 243. Tooth; 25. Connecting rod; 3. Flattening device; 31. Base; 32. Spring arm; 33. Roller; 34. Elastic component; 341. Fixing block; 342. Compression spring; 343. Guide rod; 344. Guide hole; 345. Limiting block; 346. Hydraulic rod. Detailed Implementation

[0048] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0049] Example 1

[0050] This application discloses an online roller surface flattening device. (Refer to...) Figure 1 and Figure 2 Both ends of the process roller 1 are wrapped with tape 11. During the process of laying the film on the process roller 1, the two sides of the film can be laid on the tape 11, increasing the friction between the process roller 1 and the film.

[0051] Reference Figure 3 and Figure 4Multiple rotating seats 21 are mounted on the arc-shaped mounting plate 2. Two rotating seats 21 form a group, and each group of rotating seats 21 is symmetrically arranged on both sides of the process roller 1. Multiple groups of rotating seats 21 are arranged along the tangent direction of the arc-shaped mounting plate 2. Multiple sliding grooves 22 are opened on the inner arc surface of the arc-shaped mounting plate 2. The multiple sliding grooves 22 extend along the length direction of the arc-shaped mounting plate 2 and are arranged one-to-one with the rotating seats 21. The rotating seats 21 are placed in the sliding grooves 22 and can slide along the sliding grooves 22. The roller surface online flattening device includes a flattening device 3, which flattens the roller surface. Device 3 is set up one-to-one with rotating seat 21. Flattening device 3 is installed on rotating seat 21. Rotating seat 21 drives flattening device 3 to move, which can change the position of flattening device 3, so that flattening device 3 can adapt to different film widths, which is convenient for operators to operate and saves processing costs. Connecting rods 25 are set on both sides of process roller 1. Multiple rotating seats 21 located on one side of process roller 1 are fixedly connected to connecting rods 25. Moving connecting rods 25 can move multiple rotating seats 21, which is convenient for operators to operate.

[0052] Reference Figure 4 and Figure 5 The flattening device 3 includes a base 31, spring arms 32, rollers 33, and an elastic component 34. The base 31 is mounted on a rotating seat 21. The spring arms 32 are rotatably mounted on the side wall of the base 31. Two spring arms 32 are provided, located on opposite side walls of the base 31. Each spring arm 32 is fixedly connected to a fixed shaft, which passes through the base 31, allowing the spring arms 32 to rotate. The rollers 33 are rotatably mounted between the two spring arms 32. Both ends of the rollers 33 are connected to the spring arms 32 via bearings. The rollers 33 are respectively attached to the tape 11 and the film on the process roller 1. The tape 11 increases the friction between the process roller 1 and the rollers 33 and protects the rollers 33 and the process roller 1. The elastic component 34 is installed between the base 31 and the spring arms 32. The elastic component 34 provides a continuous force to the spring arms 32, allowing the rollers 33 to press against the process roller 1 and the film.

[0053] Reference Figure 5Multiple rotating seats 21 are each rotatably mounted with a rotating shaft 211 via bearings. The rotating shaft 211 is fixedly connected to the base 31. Rotating the rotating shaft 211 causes the base 31 to rotate, which in turn causes the spring arm 32 to rotate. The spring arm 32 then causes the roller 33 to rotate, thus adjusting the axial direction of the roller 33. When the angle between the axial direction of the roller 33 and the film conveying direction is less than 90 degrees, the roller 33 can apply an outward tensile force to the film, reducing film wrinkles. This process allows the film to achieve a flattening effect, further improving the problem of poor film flattening. The flattening effect is optimal when the angle between the axis of roller 33 and the film conveying direction is 5-10 degrees. When the angle between the axis of roller 33 and the film conveying direction is 90 degrees, roller 33 can fix and guide the film. When the angle between the axis of roller 33 and the film conveying direction is greater than 90 degrees, roller 33 can apply an inward stretching force to the film, causing the film to move inward to meet production requirements.

[0054] Reference Figure 4 and Figure 5 A transmission component 24 is mounted on the rotating base 21. The transmission component 24 includes a transmission gear 241, an arc-shaped transmission plate 242, and multiple teeth 243. The transmission gear 241 is sleeved on the rotating shaft 211 and is fixedly connected to the rotating shaft 211. A sliding groove is provided on the rotating base 21, and the arc-shaped transmission plate 242 is placed in the sliding groove and can slide along the sliding groove. The side wall of the arc-shaped transmission plate 242 is in contact with the inner wall of the sliding groove. Multiple teeth 243 are fixedly connected to the side wall of the arc-shaped transmission plate 242 facing the transmission gear 241, and the multiple teeth 243 respectively mesh with the transmission gear 241. The arc-shaped transmission plate 242 is moved, which drives multiple teeth 243 to move. The multiple teeth 243 drive the transmission gear 241 to rotate, and the transmission gear 241 drives the rotating shaft 211 to rotate, which facilitates operation by the staff. Each arc-shaped transmission plate 242 is equipped with a corresponding cylinder. When the cylinder is activated, it can drive the arc-shaped transmission plate 242 to move. In addition, multiple transmission components 24 can make multiple rotating shafts 211 rotate at different angles, so that the axial directions of multiple rollers 33 are different, thereby meeting the actual needs of production.

[0055] Reference Figure 3A drive component 23 is mounted on the arc-shaped mounting plate 2. The drive component 23 includes a motor 231, a screw 232, and a limiting rod 233. The motor 231 is fixedly connected to the inner wall of one of the sliding grooves 22, and the extension direction of the output shaft of the motor 231 is the same as the extension direction of the sliding groove 22. The screw 232 is rotatably mounted on the inner wall of the same sliding groove 22 as the motor 231, and the extension direction of the screw 232 is the same as the extension direction of the sliding groove 22. The screw 232 is fixedly connected to the output shaft of the motor 231 and passes through the... In the rotating seat 21, and threadedly connected to the rotating seat 21, the side wall of the rotating seat 21 is in contact with the inner wall of the sliding groove 22. When the motor 231 is started, the motor 231 drives the screw 232 to rotate, the screw 232 drives the rotating seat 21 to move, and the rotating seat 21 drives the roller 33 to move. The limiting rod 233 is fixedly connected to the inner wall of the remaining sliding groove 22. The extension direction of the limiting rod 233 is the same as the extension direction of the sliding groove 22. The limiting rod 233 passes through the rotating seat 21 and limits the rotating seat 21.

[0056] Reference Figure 5 The elastic component 34 includes a fixing block 341, a compression spring 342, a guide rod 343, and two limiting blocks 345. The fixing block 341 is fixedly connected to the side wall of the elastic arm 32, and guide holes 344 are provided on the end faces of both the fixing block 341 and the base 31. One end of the compression spring 342 is fixedly connected to the fixing block 341, and the other end of the compression spring 342 is fixedly connected to the base 31. The compression spring 342 can apply a force to the fixing block 341, and the fixing block 341 applies a force to the elastic arm 32, so that the roller 33 is tightly attached to the process roller 1 and the film. The compression springs 342 with different elastic coefficients can be replaced to change the tensile force on the film flattening, so as to meet the tensile force requirements of different film flattening. The guide rod 343 is inserted into the compression spring 342, and its two ends are respectively inserted into the guide hole 344 and extend to the outside of the guide hole 344. The guide rod 343 can guide the compression spring 342 and improve the service life of the compression spring 342. Two limiting blocks 345 are respectively fixedly connected to the two ends of the guide rod 343, and the two limiting blocks 345 can limit the guide rod 343.

[0057] The implementation principle of the online flattening device for roller surfaces in this embodiment is as follows: When the process roller 1 is working, the motor 231 is first started. The motor 231 drives the screw 232 to rotate, the screw 232 drives the rotating seat 21 to move, and the rotating seat 21 drives the base 31 to move, thereby adjusting the position of the roller 33. Then, the arc-shaped transmission plate 242 is moved, which drives multiple teeth 243 to move. The multiple teeth 243 drive the transmission gear 241 to rotate, and the transmission gear 241 drives the rotation of the roller 33. The shaft 211 rotates, which in turn drives the base 31 to rotate. The base 31 then drives the spring arm 32 to rotate, which in turn drives the roller 33 to rotate, thus adjusting the axial direction of the roller 33. Finally, the film is attached to the process roller 1, and the arc-shaped mounting plate 2 is moved so that the roller 33 presses against the process roller 1 and the film. The roller 33 can fix and guide the film, and at the same time, as the roller 33 rotates with the process roller 1, it can also flatten the film, improving the problem of poor film flattening effect.

[0058] Example 2

[0059] Reference Figure 6 The difference between this embodiment and embodiment 1 is that the elastic component 34 includes a hydraulic rod 346. One end of the hydraulic rod 346 is hinged to the side wall of the elastic arm 32, and the other end of the hydraulic rod 346 is hinged to the end face of the base 31. The hydraulic rod 346 also applies a force to the fixing block 341, and the fixing block 341 applies a force to the elastic arm 32, so that the roller 33 is in close contact with the process roller 1 and the film. By activating the hydraulic rod 346, the hydraulic rod 346 drives the elastic arm 32 to rotate, which can more quickly adjust the angle between the elastic arm 32 and the base 31 to adapt to the tensile force requirements of different film flattening.

[0060] Example 3

[0061] The difference between this embodiment and embodiment 1 is that two adjacent arc-shaped transmission plates 242 are fixedly connected, and a cylinder is provided on one of the rotating seats 21. The cylinder is connected to the arc-shaped transmission plate 242. When the cylinder is started, it drives one of the arc-shaped transmission plates 242 to move. The arc-shaped transmission plate 242 drives multiple rotating shafts 211 to rotate synchronously, which saves manpower and material resources and makes it easier for staff to operate.

[0062] This application also discloses an online roller surface flattening method, including the following steps:

[0063] S1. Start motor 231. Motor 231 drives screw 232 to rotate. Screw 232 drives rotating seat 21 to move. Rotating seat 21 drives base 31 to move. Base 31 drives roller 33 to move. Adjust the position of roller 33 according to the width of the film so that roller 33 can adapt to different film widths and save processing costs.

[0064] S2. The arc-shaped transmission plate 242 is moved, which drives multiple teeth 243 to move. The multiple teeth 243 drive the transmission gear 241 to rotate. The transmission gear 241 drives the rotating shaft 211 to rotate. The rotating shaft 211 drives the base 31 to rotate. The base 31 drives the spring arm 32 to rotate. The spring arm 32 drives the roller 33 to rotate, thereby adjusting the axial direction of the roller 33.

[0065] When the angle between the axis of roller 33 and the film conveying direction is less than 90 degrees, roller 33 applies an outward stretching force to the film, reducing film wrinkles and achieving a flattened effect, thus improving the problem of poor film flattening. The film flattening effect is best when the angle between the axis of roller 33 and the film conveying direction is 5-10 degrees. When the angle between the axis of roller 33 and the film conveying direction is 90 degrees, roller 33 fixes and guides the film. When the angle between the axis of roller 33 and the film conveying direction is greater than 90 degrees, roller 33 applies an inward stretching force to the film, causing the film to move inward to meet production requirements.

[0066] At the same time, the arc-shaped transmission plate 242 drives the adjacent rotating shaft 211 to rotate synchronously, which facilitates the operation by the staff.

[0067] S3. The film is attached to the process roller 1, and the arc-shaped mounting plate 2 is rotated so that the roller 33 presses against the tape 11 on the process roller 1 and the film. The tape 11 increases the friction between the process roller 1, the roller 33 and the film, and at the same time protects the roller 33 and the process roller 1.

[0068] S4. Start the equipment body, the process roller 1 rotates, the process roller 1 drives the film to rotate, and at the same time the process roller 1 drives the roller 33 to rotate, the roller 33 flattens the film.

[0069] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A roller surface online flattening device, characterized in that, The device includes a flattening device (3) mounted on an arc-shaped mounting plate (2). The flattening device (3) includes a base (31) mounted on the arc-shaped mounting plate (2), a spring arm (32) rotatably mounted on the base (31), and a roller (33) rotatably mounted on the spring arm (32). An elastic component (34) is installed between the base (31) and the spring arm (32). Multiple flattening devices (3) are provided, with two flattening devices (3) forming a group, and each group of flattening devices (3) is symmetrically arranged on both sides of the process roller (1); the rollers (33) are respectively attached to the process roller (1) and the film; A rotating seat (21) is mounted on the arc-shaped mounting plate (2), and the rotating seat (21) is rotatably connected to the base (31); The elastic component (34) includes a fixed block (341) fixedly connected to the elastic arm (32), a compression spring (342) mounted on the fixed block (341), and a guide rod (343) passing through the compression spring (342); one end of the compression spring (342) away from the fixed block (341) is connected to the base (31), and guide holes (344) are provided on the end faces of the fixed block (341) and the base (31), and the two ends of the guide rod (343) are respectively inserted into the guide holes (344) and extend to the outside of the guide holes (344), and limit blocks (345) are fixedly connected to both ends of the guide rod (343); Alternatively, the elastic component (34) may include a hydraulic rod (346) hinged to the spring arm (32), with one end of the hydraulic rod (346) away from the spring arm (32) hinged to the base (31); The flattening device (3) is provided in multiple sets along the tangent direction of the arc mounting plate (2). The rotating seat (21) is rotatably connected to the rotating shaft (211). The rotating shaft (211) is fixedly connected to the base (31). The rotating seat (21) is equipped with a transmission component (24) for driving the rotating shaft (211) to rotate. The transmission component (24) includes a transmission gear (241) fixedly connected to the rotating shaft (211), an arc-shaped transmission plate (242) is slidably mounted on the rotating seat (21), and a plurality of teeth (243) are fixedly connected on the arc-shaped transmission plate (242), all of which mesh with the transmission gear (241).

2. The roller surface online flattening device according to claim 1, characterized in that: The inner arc surface of the arc mounting plate (2) is provided with a sliding groove (22), the rotating seat (21) is placed in the sliding groove (22) and can slide along the sliding groove (22), and the arc mounting plate (2) is provided with a driving component (23) for driving the rotating seat (21) to move.

3. The roller surface online flattening device according to claim 2, characterized in that: The driving component (23) includes a motor (231) fixedly connected to the inner wall of the sliding groove (22) and a screw (232) rotatably mounted on the inner wall of the sliding groove (22). The output shaft of the motor (231) is fixedly connected to the screw (232). The screw (232) passes through the rotating seat (21) and is threadedly connected to the rotating seat (21). The side wall of the rotating seat (21) is in contact with the inner wall of the sliding groove (22).

4. The roller surface online flattening device according to claim 3, characterized in that: The two adjacent arc-shaped transmission plates (242) are fixedly connected.

5. The roller surface online flattening device according to claim 4, characterized in that: Both ends of the process roller (1) are wrapped with tape (11).

6. A method for online flattening of roller surfaces, using the online flattening device for roller surfaces as described in claim 5, characterized in that, Includes the following steps: S1. Start the motor (231), the motor (231) drives the screw (232) to rotate, the screw (232) drives the rotating seat (21) to move, the rotating seat (21) drives the flattening device (3) to move, and adjust the position of the flattening device (3) according to the width of the film; S2. Move the arc-shaped transmission plate (242), and the arc-shaped transmission plate (242) drives the flattening device (3) to rotate, thereby adjusting the axial direction of the roller (33); When the angle between the axial direction of the roller (33) and the conveying direction of the film is less than 90 degrees, the roller (33) applies an outward tensile force to the film; when the angle between the axial direction of the roller (33) and the conveying direction of the film is 90 degrees, the roller (33) fixes and guides the film; when the angle between the axial direction of the roller (33) and the conveying direction of the film is greater than 90 degrees, the roller (33) applies an inward tensile force to the film. Meanwhile, the arc-shaped transmission plate (242) can drive the adjacent rotating shaft (211) to rotate synchronously; S3. The film is attached to the process roller (1), and the arc-shaped mounting plate (2) is moved so that the roller (33) abuts against the process roller (1) and the film. S4. Start the equipment body, the process roller (1) rotates, the process roller (1) drives the film to rotate, and at the same time the process roller (1) drives the roller (33) to rotate, the roller (33) flattens the film.

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