Flexible film pasting roller adjusting control method for vacuum winding film coating

Abstract

The invention discloses a flexible film pasting roller adjusting control method for vacuum winding film plating, in the method, positive bias voltage is applied to a film plating roller of vacuum winding film plating equipment, and a bias voltage roller is arranged at the adjacent position of the downstream of the film plating roller and is used for applying negative bias voltage to a flexible film; under the action of electrostatic adsorption, the flexible thin film is attached to the coating roller to be cooled by the coating roller when winding around the coating roller, and meanwhile, a conductive film layer is deposited on the flexible thin film through vacuum evaporation; a temperature sensor is adopted to detect a temperature signal of a flexible film attached to a film coating roller on line, and a pasting roller control system adjusts and controls the pasting roller wrap angle of the flexible film on the film coating roller and the adsorption force between the flexible film and the film coating roller in real time according to the temperature signal; the adjustment and control of the adsorption force are carried out by adjusting and controlling the axial distance between the bias pressure roller and the film coating roller instead of changing the bias pressure value on the film coating roller or the bias pressure roller.

Description

Technical Field

[0001] The present invention belongs to the technical field of vacuum winding coating, and in particular relates to a flexible film roller adjustment control method for vacuum winding coating, and a vacuum winding coating device used in the method. Background Art

[0002] Vacuum winding coating technology has become a core technology for the preparation of thin film products widely used in the fields of photovoltaics, flat panel displays, and automotive power batteries due to its large area, low cost, and continuity. In the vacuum winding coating process, the coating roller is the core device in the winding coating equipment. Its cooling effect on the flexible film is crucial to the quality of the flexible film product, and the attachment state of the flexible film on the coating roller directly affects the cooling effect of the coating roller on the flexible film. At present, the main way to enhance the degree of adhesion of the flexible film to the roller is electrostatic bias adsorption, that is, applying a DC bias of opposite polarity to the flexible film and the coating roller, respectively, so that the flexible film is tightly attached to the surface of the coating roller by the electrostatic adsorption when it passes through the coating roller, and a good heat exchange cooling effect is formed between the coating roller and the coating roller, so that the flexible film can avoid wrinkles, thermal deformation and other quality problems due to the high temperature during the vacuum coating process.

[0003] However, the strength of electrostatic bias adsorption also needs to be properly adjusted. If the flexible film is not sufficiently attached to the coating roller, it will be difficult for the flexible film to be sufficiently cooled during the coating process, resulting in wrinkles, deformation, or even direct film breakage due to excessive temperature. If the film is attached too tightly, the temperature of the flexible film may be too low, which will have a certain impact on the quality of the film layer deposited on the surface of the flexible film. In addition, during the long-lasting winding coating process, the ambient temperature of the vacuum coating may fluctuate to varying degrees due to certain process conditions. At this time, if the flexible film's roller state cannot be adjusted in time to keep the surface temperature of the flexible film stable, the quality and performance of the entire roll of flexible film coating products will be unstable at the beginning and end of the coating production cycle, causing trouble for the producer. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a flexible film roller adjustment and control method for vacuum winding coating, which is used for the flexible film to perform vacuum winding coating process in vacuum winding coating equipment. By adjusting and controlling the attachment condition of the flexible film on the coating roller in real time, the temperature of the flexible film attached to the coating roller is kept stable during the entire vacuum winding coating process, thereby ensuring that the quality and performance of the entire roll of flexible film coating products remain stable and consistent at the front and back ends of the coating production cycle.

[0005] In the flexible film roller adjustment and control method, a positive bias is applied to the coating roller of the vacuum winding coating equipment, and a cooling medium is passed through the coating roller; a bias roller is arranged at an adjacent position downstream of the coating roller, and a negative bias is applied to the flexible film through the bias roller, and the surfaces of the flexible film in contact with the roller surface when the flexible film passes through the bias roller and the coating roller are two different surfaces of the flexible film; under the effect of electrostatic adsorption, the flexible film adheres to the coating roller when passing through the coating roller and is cooled by the coating roller, and at the same time, a conductive film layer is deposited on the flexible film by vacuum evaporation; a temperature sensor is used for online detection The temperature signal of the flexible film attached to the coating roller is then transmitted to the roller control system of the vacuum winding coating equipment. The roller control system adjusts and controls the attachment condition of the flexible film on the coating roller in real time according to the temperature signal; the adjustment and control of the attachment condition includes adjusting and controlling the roller wrap angle of the flexible film wrapped around the coating roller and adjusting and controlling the adsorption force between the flexible film and the coating roller; the adjustment and control of the adsorption force is carried out by adjusting and controlling the axial spacing between the bias roller and the coating roller, rather than changing the bias value on the coating roller or the bias roller. The roller wrap angle of the flexible film wrapped around the coating roller is adjusted within the range of 120 to 300 degrees, the adjustment range of the roller wrap angle is 0-120 degrees, and the adjustment accuracy is 0.1 degrees; the adjustment range of the axial spacing between the bias roller and the coating roller is within the range of 0.5 to 15 cm, and the adjustment accuracy is 0.1 mm.

[0006] The component of the flexible film is one selected from polyethylene terephthalate (PET), polypropylene (PP), and polyimide (PI); the component of the conductive film layer deposited on the flexible film is one selected from copper, aluminum, silver, nickel, molybdenum, titanium, niobium, iron, zinc, and stainless steel.

[0007] A rotating device is installed on the bearing seat of the roller shaft of the coating roller, and the rotating device includes a gear-shaped body, a gear driving mechanism and a driving motor 1; a translation device is fixed on the outer side of the gear-shaped body, and the translation device includes a connecting plate, a screw driving mechanism, a slider, a slide rail and a driving motor 2; the connecting plate is installed on the slider, and the shaft end seat of the roller shaft of the bias roller is installed on the connecting plate. The gear driving mechanism includes a driving shaft and a pinion arranged on the driving shaft. The number of the rotating device and the translation device are both 2, and the 2 rotating devices are respectively installed on the bearing seats of the roller shafts at both ends of the coating roller.

[0008] The pasting roller control system controls the driving motor 1 to drive the gear-shaped body to rotate around the roller shaft of the coating roller by a certain angle through the gear driving mechanism, and the gear-shaped body drives the roller shaft of the bias roller to rotate around the roller shaft of the coating roller by a corresponding angle, thereby adjusting and controlling the roller wrap angle of the flexible film around the coating roller. The pasting roller control system controls the driving motor 2 to drive the slider to slide along the slide rail by a certain distance through the screw driving mechanism, and the slider drives the connecting plate to translate a corresponding distance along the direction of the axis connecting the bias roller and the coating roller, thereby adjusting and controlling the axis spacing between the bias roller and the coating roller.

[0009] When the detected temperature signal is higher than the target temperature value, the roller control system adjusts to increase the roller wrap angle of the flexible film around the coating roller. At the same time, the roller control system adjusts to reduce the axial distance between the bias roller and the coating roller, thereby increasing the adsorption force between the flexible film and the coating roller and improving the cooling effect of the coating roller on the flexible film.

[0010] When the detected temperature signal is lower than the target temperature value, the roller control system adjusts to reduce the roller wrap angle of the flexible film around the coating roller. At the same time, the roller control system adjusts to increase the axial distance between the bias roller and the coating roller, thereby reducing the adsorption force between the flexible film and the coating roller and reducing the cooling effect of the coating roller on the flexible film.

[0011] In the vacuum winding coating process, the surface temperature of the flexible film has a great influence on the film-forming behavior characteristics such as the migration kinetic energy and mobility of the film material particles deposited thereon, thereby affecting the microstructure and film-forming rate of the film layer. In order to make the film layer deposited on the flexible film present a good microstructure and film-forming rate and maintain stability, in the present invention, a target temperature value suitable for the film formation of a conductive film layer of a certain material on the flexible film is set in advance in the roller control system. The flexible film roller control system performs feedback control on the temperature of the flexible film attached to the coating roller by adjusting and controlling the attachment condition of the flexible film on the coating roller, so that the temperature approaches the target temperature value set in the roller control system, and the temperature of the flexible film attached to the coating roller is kept stable throughout the vacuum winding coating process.

[0012] In the existing technology in the industry that uses electrostatic bias adsorption to enhance the strength of the flexible film roller, the bias value on the coating roller or the bias roller is usually changed to enhance or weaken the adsorption force between the flexible film and the coating roller, so as to achieve the purpose of adjusting the cooling effect of the coating roller on the flexible film. However, the inventors found that in the long-lasting winding coating production process, if the bias value is adjusted in real time to cope with the impact of the temperature fluctuation of the vacuum coating environment on the temperature of the flexible film, so that the surface temperature of the flexible film remains stable, the performance and film layer microstructure of the produced coating product in certain length sections will be different from those in other length sections, affecting the stability and consistency of the entire roll of flexible film coating products. Through research, the inventors found that this phenomenon is related to the fact that the bias value on the coating roller or the bias roller is adjusted from time to time during the coating production process to maintain the stable cooling effect of the flexible film. When the flexible film is attached to the coating roller by electrostatic adsorption, a bias electric field with certain strength and distribution characteristics will be distributed on the surface of the flexible film, and the strength and distribution characteristics of this bias electric field are directly related to the bias value on the coating roller and the bias value applied by the bias roller on the flexible film. When a conductive film layer is deposited on the flexible film, the conductive film material particles deposited on the surface of the flexible film will have different degrees of movement trends before film formation due to the influence of the bias electric field, changing the film forming behavior of the film material particles, and this factor will have different degrees of influence on the microstructure of the film layer. In the vacuum winding coating production process, when the process conditions are relatively stable, the bias values ​​on the coating roller and the bias roller remain stable to maintain the stable cooling effect of the flexible film. At this time, since the film deposition conditions and the bias electric field distributed on the surface of the flexible film are relatively stable, the microstructure and performance of the deposited film layer can also be relatively stable. However, when the ambient temperature of vacuum coating fluctuates due to fluctuations in certain process conditions, once the bias value on the coating roller or bias roller is adjusted to adjust the cooling effect of the coating roller on the flexible film, the bias electric field distributed on the surface of the flexible film will change, causing the movement trend and film-forming behavior of the conductive film material particles to change, thereby affecting the microstructure of the film layer in this length segment to varying degrees, causing the film layer performance of this length segment to differ to varying degrees from that of the previous length segment. In addition, when the cooling effect of the flexible film is insufficient, increasing the bias value to improve the strength of the bonding roller also carries the risk of a breakdown accident due to excessive bias.

[0013] The present invention does not adjust and control the adsorption force by changing the bias value on the coating roller or the bias roller, but rather by adjusting and controlling the axial spacing between the bias roller and the coating roller, which is a unique technical means. In this way, the bias values ​​on the coating roller and the bias roller can be maintained unchanged while the adsorption force can be adjusted and controlled, so that the bias electric field distributed on the flexible film is also maintained stable. On this basis, combined with the adjustment and control method of the present invention, the temperature of the flexible film attached to the coating roller is kept stable during the entire vacuum winding coating process. In summary, the film-forming behavior of the conductive film material particles deposited on the flexible film can be kept stable, thereby ensuring that the film layer microstructure, quality and performance of the entire roll of flexible film coating products remain stable and consistent at the front and back ends of the coating production cycle.

[0014] The vacuum winding coating equipment also includes a unwinding roller and a winding roller, as well as a guide roller and a tension roller arranged between the unwinding roller and the winding roller.

[0015] The vacuum winding coating equipment includes a plurality of coating rollers and a rotating device, a translation device and a bias roller installed thereon. The bias roller is made of a conductive material such as stainless steel or aluminum alloy, and is used to apply a negative bias to the surface of the flexible film. The outer surface of the coating roller is provided with an insulating coating to prevent the conductive film layer on the flexible film from contacting and conducting with the coating roller, and the insulating coating has a heat conduction function.

[0016] The vacuum winding coating device also includes a bias power supply for applying positive bias and negative bias to the coating roller and the bias roller. The bias values ​​of the positive and negative bias applied to the coating roller and the bias roller are within the range of 0 to 600V.

[0017] Beneficial effects of the present invention:

[0018] 1. The present invention does not adjust and control the adsorption force by changing the bias value on the coating roller or the bias roller, but is carried out by adjusting and controlling the axial spacing between the bias roller and the coating roller, which is a unique technical means. In this way, the bias value on the coating roller and the bias roller can be maintained unchanged while the adsorption force is adjusted and controlled, so that the bias electric field distributed on the flexible film is also maintained stable. On this basis, combined with the adjustment and control method of the present invention, the temperature of the flexible film attached to the coating roller is kept stable during the entire vacuum winding coating process. In summary, the film-forming behavior of the conductive film material particles deposited on the flexible film can be kept stable, thereby ensuring that the film layer microstructure, quality and performance of the entire roll of flexible film coating products are stable and consistent in the front and back stages of the coating production cycle. In addition, it can also avoid breakdown accidents caused by excessive bias during the adjustment process.

[0019] 2. The regulation and control method of the present invention can accurately control the microstructure of the deposited film layer by controlling the temperature of the flexible film when it is attached to the coating roller, thereby reducing defects in the film layer structure to meet certain specific needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the principle of the flexible film pasting roller adjustment control method of the present invention.

[0021] Figure 2 It is a three-dimensional schematic diagram of the overall structure of the coating roller, bias roller and rotating device in the vacuum winding coating equipment involved in the present invention.

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the rotating device involved in the present invention.

[0023] Figure 4 The present invention is a schematic structural diagram of a translation device. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0025] The flexible film pasting roller adjustment control method of the present invention is used for the flexible film to perform vacuum winding coating process in vacuum winding coating equipment. Figure 1 FIG. 1 is a schematic diagram showing the principle of the flexible film pasting roller adjustment control method of the present invention. Figure 2 It is a three-dimensional schematic diagram of the overall structure of the coating roller, bias roller and rotating device in the vacuum winding coating equipment involved in the present invention. Figure 3 FIG. 2 is a schematic diagram of the three-dimensional structure of the rotating device involved in the present invention. Figure 1 , Figure 2 and Figure 3As shown, in the vacuum winding coating equipment, the coating roller 1 is arranged between the wallboard 2 and the wallboard 3, a positive bias is applied to the coating roller 1, and a cooling medium is passed through it; a bias roller 4 is arranged at an adjacent position downstream of the coating roller 1, and a negative bias is applied to the flexible film 5 through the bias roller 4. Under the effect of electrostatic adsorption, the flexible film 5 adheres to the coating roller 1 to be cooled when it passes through the coating roller 1, and at the same time, a conductive film layer is deposited on the flexible film 5 by vacuum evaporation; a temperature sensor 6 is used to detect the temperature signal of the flexible film 5 attached to the coating roller 1 online, and then the temperature signal is transmitted to the roller control system of the vacuum winding coating equipment, and the roller control system 7 issues a control instruction according to the temperature signal to adjust and control the attachment condition of the flexible film 5 on the coating roller 1 in real time. The adjustment and control of the attachment condition includes adjusting and controlling the wrap angle of the flexible film 5 around the coating roller 1 and adjusting and controlling the adsorption force between the flexible film 5 and the coating roller 1; the adjustment and control of the adsorption force is carried out by adjusting and controlling the axial distance between the bias roller 4 and the coating roller 5, rather than by changing the bias value on the coating roller 1 or the bias roller 4. The wrap angle of the flexible film 5 around the coating roller 1 is adjusted within the range of 120 to 300 degrees, the adjustment range of the wrap angle of the flexible film 5 is 0-120 degrees, and the adjustment precision is 0.1 degrees; the adjustment range of the axial distance between the bias roller 4 and the coating roller 1 is within the range of 0.5 to 15 cm, and the adjustment precision is 0.1 mm.

[0026] The component of the flexible film is one selected from polyethylene terephthalate (PET), polypropylene (PP), and polyimide (PI); the component of the conductive film layer deposited on the flexible film is one selected from copper, aluminum, silver, nickel, molybdenum, titanium, niobium, iron, zinc, and stainless steel.

[0027] A rotating device is installed on the bearing seat 17 of the roller shaft of the coating roller 1, and the rotating device includes a gear-shaped body 8, a gear driving mechanism 9 and a driving motor 10. The gear driving mechanism 9 includes a driving shaft 11 and a pinion 12 arranged on the driving shaft.

[0028] Figure 4 Schematic diagram of the structure of the translation device of the present invention. Figure 4 As shown, a translation device is fixed to the outer side of the gear-shaped main body 8, and the translation device includes a connecting plate 13, a screw drive mechanism, a slider 14, a slide rail 15 and two drive motors; the connecting plate 13 is installed on the slider 14, and the shaft end seat 16 of the roller shaft of the bias roller is installed on the connecting plate 13.

[0029] The pasting roller control system controls the driving motor 1 to drive the gear-shaped body to rotate around the roller shaft of the coating roller by a certain angle through the gear driving mechanism, and the gear-shaped body drives the roller shaft of the bias roller to rotate around the roller shaft of the coating roller by a corresponding angle, thereby adjusting and controlling the roller wrap angle of the flexible film around the coating roller. The pasting roller control system controls the driving motor 2 to drive the slider to slide along the slide rail by a certain distance through the screw driving mechanism, and the slider drives the connecting plate to translate a corresponding distance along the direction of the axis connecting the bias roller and the coating roller, thereby adjusting and controlling the axis spacing between the bias roller and the coating roller.

[0030] When the detected temperature signal is higher than the target temperature value, the roller control system adjusts to increase the roller wrap angle of the flexible film around the coating roller. At the same time, the roller control system adjusts to reduce the axial distance between the bias roller and the coating roller, thereby increasing the adsorption force between the flexible film and the coating roller and improving the cooling effect of the coating roller on the flexible film.

[0031] When the detected temperature signal is lower than the target temperature value, the roller control system adjusts to reduce the roller wrap angle of the flexible film around the coating roller. At the same time, the roller control system adjusts to increase the axial distance between the bias roller and the coating roller, thereby reducing the adsorption force between the flexible film and the coating roller and reducing the cooling effect of the coating roller on the flexible film.

[0032] In the present invention, a target temperature value suitable for forming a conductive film layer of a certain material on a flexible film is pre-set in the roller control system. The flexible film roller control system performs feedback control on the temperature of the flexible film attached to the coating roller by adjusting and controlling the attachment condition of the flexible film on the coating roller, so that the temperature approaches the target temperature value set in the roller control system, and the temperature of the flexible film attached to the coating roller is kept stable during the entire vacuum winding coating process.

[0033] The present invention does not adjust and control the adsorption force by changing the bias value on the coating roller or the bias roller, but by adjusting and controlling the axial spacing between the bias roller and the coating roller, which is a unique technical means. The inventor has found that the adsorption force on the flexible film on the coating roller is affected by two factors: on the one hand, as generally known by technicians in the industry, it is caused by the mutual attraction between the coating roller surface with positive bias and the flexible film surface with negative bias in a very close distance; on the other hand, it is caused by the inter-roller electric field component force along the radial direction of the roller surface, which is caused by the electric field force on the negatively charged flexible film on the coating roller surface in the inter-roller electric field formed between the coating roller surface with positive bias and the bias roller surface with negative bias. Although the inter-roller electric field component force is not enough to change the bias electric field distributed on the flexible film as mentioned above, it is an important component for the adsorption force on the flexible film on the coating roller. According to mechanical analysis, the inter-roller electric field component force on a certain micro-segment in the negatively charged flexible film on the coating roller surface is proportional to the inter-roller electric field strength at the micro-segment position and sin(a), where a is the angle between the tangential direction of the micro-segment on the roller surface and the direction of the inter-roller electric field strength at the micro-segment position. When the axial spacing between the bias roller and the coating roller is reduced, the inter-roller electric field strength increases. At the same time, the inter-roller electric field is compressed and deformed, causing the angle a between the inter-roller electric field strength direction at the micro-segment position and the tangential direction of the micro-segment to increase, thereby increasing the inter-roller electric field component force on the micro-segment. Therefore, the combined effects of each micro-segment increase the adsorption force on the flexible film on the coating roller. When the axial spacing between the bias roller and the coating roller increases, the electric field intensity between the rollers decreases. At the same time, the electric field between the rollers is subjected to tensile deformation, resulting in a decrease in the angle a between the electric field intensity direction between the rollers at the micro-segment position and the tangential direction of the micro-segment, thereby reducing the electric field component between the rollers received by the micro-segment. Therefore, the combined effects of the micro-segments reduce the adsorption force received by the flexible film on the coating roller. In this way, the method for adjusting and controlling the adsorption force in the present invention can maintain the bias values ​​on the coating roller and the bias roller unchanged while achieving the adjustment and control of the adsorption force, so that the bias electric field distributed on the flexible film is also maintained stable. On this basis, combined with the adjustment and control method of the present invention, the temperature of the flexible film attached to the coating roller is kept stable throughout the vacuum winding coating process. In summary, the film-forming behavior of the conductive film material particles deposited on the flexible film can be kept stable, thereby ensuring that the film layer microstructure, quality and performance of the entire roll of flexible film coating products remain stable and consistent in the front and back stages of the coating production cycle.

[0034] The vacuum winding coating equipment also includes a unwinding roller and a winding roller, as well as a guide roller and a tension roller arranged between the unwinding roller and the winding roller.

[0035] The vacuum winding coating equipment includes a plurality of coating rollers and a rotating device, a translation device and a bias roller installed thereon. The bias roller is made of a conductive material such as stainless steel or aluminum alloy, and is used to apply a negative bias to the surface of the flexible film. The outer surface of the coating roller is provided with an insulating coating to prevent the conductive film layer on the flexible film from contacting and conducting with the coating roller, and the insulating coating has a good thermal conductivity.

[0036] The vacuum winding coating device also includes a bias power supply for applying positive bias and negative bias to the coating roller and the bias roller. The bias values ​​of the positive and negative bias applied to the coating roller and the bias roller are within the range of 0 to 600V.

Claims

1. A flexible film roller adjustment control method for vacuum winding coating, which is used for a flexible film to be subjected to vacuum winding coating in a vacuum winding coating device, characterized in that: In the method, a positive bias is applied to the coating roller of the vacuum winding coating equipment, and a cooling medium is passed through the coating roller; a bias roller is arranged at an adjacent position downstream of the coating roller, and a negative bias is applied to the flexible film through the bias roller, and the surfaces of the flexible film in contact with the roller surface when winding around the bias roller and the coating roller are two different surfaces of the flexible film; under the effect of electrostatic adsorption, the flexible film adheres to the coating roller when winding around the coating roller to receive cooling from the coating roller, and at the same time, a conductive film layer is deposited on the flexible film by vacuum evaporation; a temperature sensor is used to online detect the temperature signal of the flexible film attached to the coating roller, and a roller control system of the vacuum winding coating equipment issues a control instruction according to the temperature signal, and adjusts and controls the attachment condition of the flexible film on the coating roller in real time; the adjustment and control of the attachment condition includes adjusting and controlling the roller wrap angle of the flexible film winding around the coating roller and adjusting and controlling the adsorption force between the flexible film and the coating roller; the adjustment and control of the adsorption force is achieved by adjusting and controlling the axial spacing between the bias roller and the coating roller, rather than by changing the bias value on the coating roller or the bias roller.

2. The method for adjusting and controlling the flexible film roller for vacuum winding coating according to claim 1 is characterized in that: The wrap angle of the flexible film wrapped around the coating roller is adjusted within the range of 120 to 300 degrees, the adjustment range of the wrap angle of the coating roller is 0-120 degrees, and the adjustment accuracy is 0.1 degrees; the adjustment range of the axial distance between the bias roller and the coating roller is 0.5 to 15cm, and the adjustment accuracy is 0.1mm.

3. The method for adjusting and controlling the flexible film roller for vacuum winding coating according to claim 1 is characterized in that: The component of the flexible film is one selected from polyethylene terephthalate, polypropylene and polyimide; the component of the conductive film layer deposited on the flexible film is one selected from copper, aluminum, silver, nickel, molybdenum, titanium, niobium, iron, zinc and stainless steel.

4. The method for adjusting and controlling the flexible film roller for vacuum winding coating according to claim 1 is characterized in that: A rotating device is installed on the bearing seat of the roller shaft of the coating roller, and the rotating device includes a gear-shaped main body, a gear driving mechanism and a driving motor 1; a translation device is fixed on the outer side of the gear-shaped main body, and the translation device includes a connecting plate, a screw driving mechanism, a slider, a slide rail and a driving motor 2; the connecting plate is installed on the slider, and the shaft end seat of the roller shaft of the bias roller is installed on the connecting plate.

5. The method for adjusting and controlling the flexible film roller for vacuum winding coating according to claim 4 is characterized in that: The pasting roller control system controls the driving motor to drive the gear-shaped body through the gear driving mechanism to rotate a certain angle around the roller axis of the coating roller. The gear-shaped body drives the roller axis of the bias roller to rotate a corresponding angle around the roller axis of the coating roller, thereby adjusting and controlling the pasting roller wrap angle of the flexible film around the coating roller.

6. The method for adjusting and controlling the flexible film roller for vacuum winding coating according to claim 4 is characterized in that: The roller control system controls the driving motor 2 to drive the slider to slide a certain distance along the slide rail through the screw drive mechanism. The slider drives the connecting plate to translate a corresponding distance along the axis connecting the bias roller and the coating roller, thereby adjusting and controlling the axial distance between the bias roller and the coating roller.

7. The method for adjusting and controlling the flexible film roller for vacuum winding coating according to claim 4 is characterized in that: The number of the rotating device and the number of the translation device are both 2.

8. The method for adjusting and controlling a flexible film roller for vacuum winding coating according to claim 1, characterized in that: When the detected temperature signal is higher than the target temperature value, the roller control system adjusts to increase the roller wrap angle of the flexible film around the coating roller. At the same time, the roller control system adjusts to reduce the axial distance between the bias roller and the coating roller, thereby increasing the adsorption force between the flexible film and the coating roller and improving the cooling effect of the coating roller on the flexible film.

9. The method for adjusting and controlling a flexible film roller for vacuum winding coating according to claim 1, characterized in that: When the detected temperature signal is lower than the target temperature value, the roller control system adjusts to reduce the roller wrap angle of the flexible film around the coating roller. At the same time, the roller control system adjusts to increase the axial distance between the bias roller and the coating roller, thereby reducing the adsorption force between the flexible film and the coating roller and reducing the cooling effect of the coating roller on the flexible film.

10. The method for adjusting and controlling a flexible film roller for vacuum winding coating according to claim 1, characterized in that: The roller control system adjusts and controls the adhesion condition of the flexible film on the coating roller, and performs feedback control on the temperature of the flexible film attached to the coating roller, so that the temperature approaches the target temperature value pre-set in the roller control system, and the temperature of the flexible film attached to the coating roller remains stable during the entire vacuum winding coating process.

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