Adhesive film conveying device, adhesive film conveying method and adhesive film

Abstract

The invention provides an adhesive film conveying device. The adhesive film conveying device comprises a base, an input roller, an output roller, a transverse roller, a first turnover roller, a second turnover roller and a translation adjusting mechanism. A processing space is formed among the input roller, the transverse roller and the output roller; the first folding roller and the second folding roller are arranged in the processing space, and the second folding roller and the first folding roller intersect with each other and are arranged on different planes; and the translation adjusting mechanism is coupled between the first folding roller and / or the second folding roller and the base, and the translation adjusting mechanism is configured to provide translation degree of freedom for the first folding roller or the second folding roller. The invention further provides an adhesive film conveying method and the adhesive film. According to the adhesive film conveying device, overturning treatment of the packaging adhesive film can be achieved, the adhesive film conveying device can be applied to overturning treatment of adhesive films of various widths and materials, deviation correction treatment is conducted on the offset generated in the overturning process of the packaging adhesive film by arranging the translation adjusting mechanism, and therefore the winding quality of the adhesive film is improved.

Description

Technical Field

[0001] This application relates to the field of transmission technology, and in particular to a film transmission device, film transmission method and film. Background Technology

[0002] In the production of photovoltaic encapsulating films, due to the varying actual needs of photovoltaic modules, multi-layer composite or bi-sided anisotropic encapsulating films with different structures on both surfaces are becoming increasingly common. During the winding of the encapsulating film, bi-sided anisotropic encapsulating films may only have one side suitable for winding. Due to differences in the manufacturing process, in such cases, the encapsulating film needs to be flipped to ensure it can be wound in the required manner. In the encapsulating film industry, the flipping process is typically achieved by rewinding the product after normal winding. However, this method is time-consuming, labor-intensive, and difficult to control in terms of winding temperature and tension.

[0003] In the similar field of printing, where double-sided printing and other processes are required, there are devices that can flip printed materials. However, encapsulating films differ significantly from printed materials. Encapsulating films have a higher coefficient of friction and a wider width. Using flipping equipment from the printing industry to process encapsulating films can easily lead to problems such as uneven film roll edges, film stretching and deformation, and poor winding quality. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a film transport device capable of flipping the encapsulating film while simultaneously adjusting it to ensure winding quality.

[0005] To achieve the above objectives, the technology of this application is as follows:

[0006] One aspect of this application provides a film transport device, defining the input direction of the film as a preset direction. The film transport device includes a base, an input roller, an output roller, a transverse roller, a first folding roller, a second folding roller, and a translation adjustment mechanism. The input roller is rotatably connected to a first side of the base; the output roller is rotatably connected to a second side of the base; the transverse roller is rotatably connected to a third side of the base; a processing space exists between the input roller, the transverse roller, and the output roller; the first folding roller is disposed in the processing space; the second folding roller is disposed in the processing space and configured to intersect with and be opposite to the first folding roller; the translation adjustment mechanism is coupled between the first folding roller and the base and / or coupled between the second folding roller and the base, and is disposed at both ends of the first folding roller and / or both ends of the second folding roller, configured to provide translational freedom for either the first or second folding roller.

[0007] Furthermore, at least one of the first folding roller or the second folding roller is an air roller, which has air holes penetrating its surface, and one end of the air roller is connected to a gas input mechanism.

[0008] Furthermore, the film transfer device also includes a gas temperature control mechanism, which is coupled between the gas input mechanism and the air roller.

[0009] Furthermore, a plane containing the axis of the air roller is defined as a preset plane, which divides the surface of the air roller into a first region with air holes and a flat second region.

[0010] The pores in the first region are configured as follows:

[0011] The pores in the first region are distributed in a spiral shape. The first region includes at least two groups of pores that are basically parallel to each other. The adjacent pore groups are arranged along the axial direction of the air roller. In the direction from the end closer to the gas input mechanism to the end farther away from the gas input mechanism, the distance between adjacent pore groups gradually increases. The distance between adjacent pores in the same pore group is basically the same.

[0012] Furthermore, the film conveying device also includes an angle adjustment mechanism, which is coupled between the first folding roller and the base and / or coupled between the second folding roller and the base. The angle adjustment mechanism is disposed at at least one end of the first folding roller and / or at least one end of the second folding roller.

[0013] Furthermore, the film transfer device satisfies one of the following first settings and / or one of the following second settings;

[0014] The first setting includes,

[0015] When the angle adjustment mechanism is coupled between the first folding roller and the base, the angle adjustment mechanism is configured to rotate the first folding roller between a first position and a second position. In the first position, the angle between the first folding roller and the preset direction is 40°, and in the second position, the angle between the first folding roller and the preset direction is 50°; or

[0016] When the translation adjustment device is coupled between the first folding roller and the base, the included angle between the first folding roller and the preset direction is basically greater than or equal to 40° and less than or equal to 50°.

[0017] The second setting includes,

[0018] When the angle adjustment mechanism is coupled between the second folding roller and the base, the angle adjustment mechanism is configured to rotate the second folding roller between a third position and a fourth position. In the third position, the angle between the second folding roller and the preset direction is 40°, and in the fourth position, the angle between the second folding roller and the preset direction is 50°; or

[0019] When the translation adjustment device is coupled between the second folding roller and the base, the angle between the second folding roller and the preset direction is basically greater than or equal to 40° and less than or equal to 50°.

[0020] Furthermore, at least one of the input roller, output roller, and transverse roller is configured as an active roller.

[0021] Furthermore, the output roller is configured as an active roller, and at least one of the input roller or the transverse roller is configured as an active roller.

[0022] Furthermore, the film transfer device also includes a tension control mechanism configured to adjust the running tension of the film by controlling the rotational speed of the transverse roller.

[0023] Furthermore, the film transfer device also includes at least one of a first support component, a second support component, a third support component, or a fourth support component disposed within the installation space. The upper surface of the first support component is configured to be substantially flush with the bottom of the first folding roller, the upper surface of the second support component is configured to be substantially flush with the top of the first folding roller, the upper surface of the third support component is configured to be substantially flush with the bottom of the second folding roller, and the upper surface of the fourth support component is configured to be substantially flush with the top of the second folding roller.

[0024] The first support assembly, the second support assembly, the third support assembly, and the fourth support assembly include support members with rotational degrees of freedom.

[0025] Furthermore, the film transfer device also includes a translational transfer mechanism, which is located on at least one side of the processing space.

[0026] Furthermore, the translational transfer mechanism includes at least one transfer roller.

[0027] A second aspect of the embodiments of this application provides a film transfer method, which is implemented by the aforementioned film transfer device;

[0028] Film transfer methods include,

[0029] The input roller pulls and feeds in the film with the front side facing up;

[0030] The film is transferred with its face down after being flipped by the first folding roller.

[0031] The film is transferred with its front side facing up after being flipped by the transverse roller.

[0032] The film is transferred with its face down after being flipped by the second folding roller.

[0033] The output roller pulls and outputs the film with the front side facing down.

[0034] A third aspect of the embodiments of this application provides an adhesive film that has been processed by the aforementioned adhesive film transport device or the aforementioned adhesive film transport method.

[0035] In summary, the technical solution in this application has at least the following beneficial effects:

[0036] 1. The adhesive film transfer device in this application can realize the flipping process of the encapsulating adhesive film;

[0037] 2. The film transfer device in this application can be applied to the flipping process of various widths and materials of encapsulating films;

[0038] 3. In this application, a translation adjustment mechanism is set up to correct the offset generated during the flipping process of the encapsulation film, thereby improving the winding quality of the encapsulation film.

[0039] 4. The film transport device of this application is provided with two sets of parallel film transport mechanisms that can realize reverse transport and forward transport respectively, and can realize online switching between reverse winding and forward winding. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of the adhesive film transfer device in one embodiment of this application;

[0041] Figure 2 This is a simplified schematic diagram of a film transfer device in one embodiment of this application;

[0042] Figure 3 This is a schematic diagram showing the height relationship of the film transfer device in one embodiment of this application;

[0043] Figure 4 This is a schematic diagram of the combined structure of the air roller and the gas input mechanism in one embodiment of this application;

[0044] Figure 5 This is a schematic diagram of the combined structure of the air roller, gas temperature control mechanism and gas input mechanism in one embodiment of this application;

[0045] Figure 6 This is a schematic diagram of the structure of the air roller in one embodiment of this application;

[0046] Figure 7 This is a schematic diagram showing the surface development of the first region in an air roller according to one embodiment of this application;

[0047] Figure 8 This is a schematic diagram of the adhesive film transfer device in the second embodiment of this application;

[0048] Figure 9 This is a simplified schematic diagram of the film transfer device in the second embodiment of this application;

[0049] Figure 10 This is a simplified schematic diagram of the film transfer device in the third embodiment of this application;

[0050] Figure 11 This is a schematic diagram of the adhesive film transfer device in the third embodiment of this application;

[0051] Figure 12 This is a simplified schematic diagram of the film transfer device in the fourth embodiment of this application;

[0052] Figure 13 This is a schematic diagram of the adhesive film transfer device in the fourth embodiment of this application;

[0053] Figure 14 This is a schematic diagram of the adhesive film transfer device in the fifth embodiment of this application;

[0054] In the figure: film conveying device 100, base 11, input roller 12, output roller 13, transverse roller 14, first folding roller 15, second folding roller 16, translation adjustment mechanism 17, air roller 18, air hole 181, first area 182, second area 183, gas input mechanism 19, gas temperature control mechanism 21, angle adjustment mechanism 22, tension control mechanism 23, support assembly 24, support member 241, translation conveying mechanism 25, conveying roller 251, preset direction 101, air roller axis 102, preset plane 103. Detailed Implementation

[0055] To enable those skilled in the art to better understand the present application, the technical solutions in specific embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. For the purpose of better illustrating the film transport device in this application, the direction of film transport is defined as a preset direction. The following description only covers film transport devices that transport film horizontally (i.e., the overall transport direction of the film is horizontal). However, it should be understood that the film transport device in this application can be adjusted accordingly based on the actual requirements of the film transport direction to achieve the requirement of transporting film in other directions (such as vertical or other directions that are neither horizontal nor vertical).

[0056] This application provides a film transfer device 100, such as... Figure 1 and Figure 2As shown, the device includes a base 11, an input roller 12, an output roller 13, a transverse roller 14, a first folding roller 15, a second folding roller 16, and a translation adjustment mechanism 17. The film transfer device 100 in this application is used to flip the film during or after film production. The film transfer device 100 can be located near the end of the film production line to flip the film before winding to ensure winding quality. The film transfer device 100 can also be located within the film production line for flipping during processes such as base film coating. The base 11 forms the basic frame of the film transfer device 100, and other components are directly or indirectly connected and installed to the base 11. Typically, the base 11 is a rectangular frame structure, but in special applications, it can also be a polygonal structure of other shapes. The input roller 12 is located on the first side of the base 11 and is used to input the film requiring flipping into the film transfer device 100. The output roller 13 is located on the second side of the base 11 and is used to output the flipped adhesive film to the outside of the adhesive film transport device 100. Normally, the output roller 13 is located on the side of the base 11 opposite to the input roller 12 and is substantially parallel to the input roller 12. However, in special applications, the output roller 13 and the input roller 12 can be arranged at any angle that is not parallel. The transverse roller 14 is located on the third side of the base 11. Normally, the transverse roller 14 is located between the input roller 12 and the output roller 13 and is perpendicular to both the input roller 12 and the output roller 13. However, in special applications, the transverse roller 14 can be arranged at any angle that is not perpendicular to the output roller 13. The input roller 12, the transverse roller 14, and the output roller 13 can enclose a rectangular processing space, within which the substrate of the adhesive film transport device 100 performs the flipping process on the adhesive film. The input roller 12, the transverse roller 14, and the output roller 13 are all rotatably connected to the base 11. When the base film passes through, these rollers enable better film transfer. Specifically, the input roller 12, the transverse roller 14, and the output roller 13 can be either passive rollers that rotate passively under the influence of the film, or active rollers that rotate under the drive of other driving sources. Of course, all of the input roller 12, the transverse roller 14, and the output roller 13 can be passive rollers, all can be active rollers, or some can be passive rollers and others can be active rollers. Furthermore, the output roller 13 is set as an active roller. As an active roller, the output roller 13 can continuously pull the film and maintain a constant film output, improving the stability of the film output. Even further, the output roller 13 is set as an active roller, and at least one of the input roller 12 and the transverse roller 14 is set as an active roller.

[0057] The first folding roller 15 and the second folding roller 16 are disposed in the aforementioned processing space. The first folding roller 15 is connected to the base 11, and the second folding roller 16 is also connected to the base 11. The first folding roller 15 and the second folding roller 16 are arranged intersectingly and on opposite sides. Specifically, the first folding roller 15 can be disposed above the second folding roller 16, or it can be disposed below the second folding roller 16. During the film flipping process, the film is input by the input roller 12 and first undergoes flipping by the first folding roller 15. After being flipped by the first folding roller 15, the film's transmission direction changes, and it is transmitted towards the transverse roller 14. After a second flip on the transverse roller 14, the film is transmitted towards the second folding roller 16. After a third flip on the second folding roller 16, the film is output outward through the output roller 13. After the above processing, the film is flipped during output. That is, when the film is input with the front facing up, it is output with the front facing down; when the film is input with the front facing down, it is output with the front facing up.

[0058] In a specific situation, such as Figure 3 As shown, the heights of the input roller 12, the first folding roller 15, the transverse roller 14, the second folding roller 16, and the output roller 13 increase sequentially. The adhesive film is input and output substantially along the preset direction 101, but the height of the adhesive film at the output is higher than the height of the adhesive film at the input. However, it should be understood that those skilled in the art can, based on this application and according to actual circumstances, adjust the heights of the input roller 12, the first folding roller 15, the transverse roller 14, the second folding roller 16, and the output roller 13, as well as the axial direction of the adhesive film between the rollers, so that the output direction of the adhesive film is different from the input direction, or so that the height of the adhesive film at the input is higher than the height at the output, or so that the height of the adhesive film at the input is equal to the height of the adhesive film at the output.

[0059] The film transfer device 100 of this application is also provided with, for example... Figure 1 and Figure 2The diagram shows a translation adjustment mechanism for adjusting the output position and direction of the adhesive film. The translation adjustment mechanism can be adjusted according to the specific type and width of the adhesive film to ensure the output position and direction meet requirements. This translation adjustment device is coupled between the first folding roller 15 and the base 11 and / or coupled between the second folding roller 16 and the base 11. The translation adjustment mechanism 17 is disposed at both ends of the first folding roller 15 and / or both ends of the second folding roller 16, providing translational freedom for either the first folding roller 15 or the second folding roller 16. Specifically, the translation adjustment mechanism 17 can be disposed only between both ends of the first folding roller 15 and the base 11 to provide translational freedom in the plane for the first folding roller 15. Alternatively, the translation adjustment mechanism 17 can be disposed only between both ends of the second folding roller 16 and the base 11 to provide translational freedom in the plane for the second folding roller 16. The translation adjustment mechanism 17 can also be simultaneously disposed between the two ends of the first folding roller 15 and the base 11 and between the two ends of the second folding roller 16 and the base 11, for providing translational freedom in the plane for the first folding roller 15 and the second folding roller 16. The direction of the translational freedom provided by the translation adjustment mechanism 17 to the first folding roller 15 and / or the second folding roller 16 can be a straight line along the preset direction 101, a straight line perpendicular to the preset direction 101, or any direction in which movement is possible in the plane. Preferably, the direction of the translational freedom provided by the translation adjustment mechanism 17 to the first folding roller 15 and / or the second folding roller 16 is a straight line along the preset direction 101, that is, the first folding roller 15 and / or the second folding roller 16 can move along the preset direction 101. The preset direction 101 is the running direction of the adhesive film in the adhesive film transfer device 100, and the preset direction 101 is also the arrangement extension direction of the adhesive film production line. In the film production line, there is ample space along the preset direction 101. Setting the first folding roller 15 and / or the second folding roller 16 to move along the preset direction 101 reduces the space occupied by the translation adjustment mechanism 17 in the direction perpendicular to the preset direction 101. In this application, the extension direction of at least one of the first folding rollers 15 and 16 forms an acute angle with the extension direction of the transverse roller 14, which is neither parallel nor perpendicular. Due to this acute angle, translating the first folding roller 15 changes the positional relationship between the first folding roller 15 and the transverse roller 14, thereby changing the positional relationship of the film on the transverse roller 14 after being folded by the first folding roller 15 and input to the transverse roller 14, and ultimately changing the positional relationship of the film on the output roller 13 when it is output to the output roller 13. The same principle applies to the second folding roller 16. In short, by shifting the first folding roller 15 or the second folding roller 16 to change the positional relationship between the first folding roller 15 or the second folding roller 16 and the transverse roller 14, the position of the film on the output roller 13 during output can be controlled.For adhesive films that differ in material and width, if the same adhesive film transport device 100 is used, the position of the adhesive film on the output roller 13 may vary or shift during output, which can affect subsequent production. In this application, the relative positional relationship between the first folding roller 15 or the second folding roller 16 and the transverse roller 14 can be adjusted by the translation adjustment mechanism 17 to adjust the position of the adhesive film on the output roller 13 during output. This mitigates the problem of differences and shifts in adhesive film position during output caused by material and width, facilitating the production of adhesive films with different materials or widths on the same production line and ensuring consistency. It also increases the convenience of adjusting the production line when producing different adhesive films. Furthermore, with the assistance of the translation adjustment mechanism 17, the first folding roller 15 (or the second folding roller 16) has at least 300 mm of translational freedom.

[0060] As an optional implementation, the extension direction of the input roller 12 is substantially perpendicular to the preset direction 101, the extension direction of the output roller 13 is substantially perpendicular to the preset direction 101, and the extension direction of the transverse roller 14 is substantially parallel to the preset direction 101. During the film production process, the film is conveyed substantially along a straight line. Setting the extension directions of the input roller 12 and the output roller 13 to be perpendicular to the preset direction 101 can basically meet the needs of film production and also satisfy the production line layout. With the extension directions of the input roller 12 and the output roller 13 perpendicular to the preset direction 101, the film can be input into the film conveying device 100 in a direction perpendicular to the input roller 12, and simultaneously output from the film conveying device 100 in a direction perpendicular to the output roller 13. After being processed by the first folding roller 15, the film input along the preset direction 101 can enter the transverse roller 14 in a direction perpendicular to the transverse roller 14, and after folding, be output to the second folding roller 16.

[0061] As an optional implementation method, such as Figure 4As shown, at least one of the first folding roller 15 or the second folding roller 16 is an air roller 18. The air roller 18 has air holes 181 penetrating its surface. One end of the air roller 18 is connected to a gas input mechanism 19, and the other end of the air roller 18 is closed. The first folding roller 15 and the second folding roller 16 not only guide the adhesive film, but also realize the folding and reversing of the adhesive film. During the processing, the force between the adhesive film and the first folding roller 15 and the second folding roller 16 is relatively large, and a large frictional force is generated between the adhesive film and the first folding roller 15 or the second folding roller 16. When the air roller 18 is used as either the first folding roller 15 or the second folding roller 16, the gas ejected from the air holes 181 on the surface of the air roller 18 can lift the adhesive film, allowing it to suspend on the surfaces of the first folding roller 15 and the second folding roller 16. This reduces friction between the adhesive film and the first folding roller 15 and the second folding roller 16, thus solving problems such as film deformation and displacement caused by excessive friction, and improving the film transfer quality. One end of the air roller 18 is connected to the gas input mechanism 19, while the other end is closed, ensuring that the gas input into the air roller 18 by the gas input mechanism 19 is ejected only from the air holes 181 on the surface of the air roller 18, improving the suspension effect of the adhesive film on the surface of the air roller 18. The gas input mechanism 19 is one type of air pump, including piston pumps and scroll pumps. In addition, when the first folding roller 15 or the second folding roller 16 is an air roller 18, the first folding roller 15 or the second folding roller 16 is fixedly connected to the base 11 to facilitate the setting of components and structures such as the gas input mechanism 19 and the air hole 181, and to ensure the running stability of the adhesive film when it passes through the first folding roller 15 or the second folding roller 16.

[0062] As an optional implementation method, such as Figure 5 As shown, the film transfer device 100 also includes a gas temperature control mechanism 21, which is coupled between the gas input mechanism 19 and the air roller 18. In this application, the gas input mechanism 19 is primarily selected as an air pump. During the process of inputting gas into the air roller 18, the air pump compresses the gas to raise its temperature, or directly uses a high-temperature gas as the gas source for the gas input mechanism 19. When the temperature of the gas input into the air roller 18 is high, it can affect the shape of the film, and even cause deformation. The gas temperature control mechanism 21, located between the gas input mechanism 19 and the air roller 18, controls the temperature of the gas input into the gas input mechanism 19, ensuring that the gas entering the air roller 18 is at a suitable temperature. This avoids adverse effects on the quality and transfer of the film due to unsuitable gas temperature, thus improving the processing quality of the film. Specifically, the gas temperature control mechanism 21 can be a plate heat exchanger. More specifically, the gas temperature control mechanism 21 can be a liquid-gas plate heat exchanger.

[0063] As an optional implementation method, such as Figure 6 As shown, a plane containing the axis 102 of the air roller is defined as a preset plane 103. The preset plane 103 divides the surface of the air roller 18 into a first region 182 with air holes 181 and a flat second region 183. When the adhesive film is processed by the first folding roller 15 or the second folding roller 16, the adhesive film is basically only in contact with half of the surface of the first folding roller 15 or the second folding roller 16, and this half surface is the effective surface during adhesive film processing. When at least one of the first folding roller 15 or the second folding roller 16 is selected as the air roller 18, the air holes 181 are provided on the effective surface of the air roller 18 while no air holes 181 are provided on the remaining surface. This allows the gas in the air roller 18 to be blown out only from this effective surface, which can improve the utilization rate of the gas in the air roller 18. At the same time, it can also improve the suspension effect of the adhesive film on the surface of the air roller 18, thereby improving the folding effect of the adhesive film on the air roller 18 (first folding roller 15 or second folding roller 16).

[0064] As an optional implementation, the vents 181 on the first region 182 are distributed in a spiral pattern. The vents 181 on the first region 182 are configured such that the first region 182 includes at least two groups of vents arranged substantially parallel to each other. Adjacent vent groups are arranged along the axial direction of the air roller, and the spacing between adjacent vent groups gradually increases from the end near the gas input mechanism 19 to the end away from the gas input mechanism 19. The diameter of the vents 181 on the first region 182 can be greater than or equal to 1 mm and less than or equal to 3 mm, further greater than or equal to 1.4 mm and less than or equal to 2.6 mm, and even further greater than or equal to 1.7 mm and less than or equal to 2.3 mm. The spiral arrangement of the vents 181 on the first region 182 can match the running direction of the adhesive film on the air roller 18. The spiral direction and pitch of the spiral formed by the arrangement of the air holes 181 are basically consistent with the running direction of the adhesive film on the air roller 18. This avoids damage to the adhesive film or problems affecting the smoothness of the film folding process caused by the mismatch between the gas blown out of the air holes 181 and the running direction of the adhesive film, thereby improving the stability of the adhesive film during the folding process and enhancing the effect and efficiency of the film folding process at the air roller 18. Furthermore, in order to match the conveying direction of the adhesive film, the air holes 181 on the first region 182 are distributed in a right-handed spiral shape.

[0065] To better illustrate the arrangement of the pores 18 in the first region 182, as follows: Figure 7 The first region 182 is unfolded along the plane as shown, and the following coordinate system is established, where m groups of air holes are distributed along the axial direction of the air roller 18 in the first region 182 (e.g., ...). Figure 7 The first to m groups are arranged vertically, and each group has n pores (e.g., the first to m groups). Figure 7The first to the nth holes are arranged horizontally and in a straight line. From left to right, the holes 181 in the first group of holes are denoted as (1,1), (1,2), (1,3)...(1,n); and so on, from left to right, the holes 181 in the mth group of holes are denoted as (m,1), (m,2), (m,3)...(m,n).

[0066] The spiral travel distance between adjacent pores 181 in the same pore group is greater than or equal to 30 mm and less than or equal to 100 mm. Further, the spiral travel distance between adjacent pores 181 in the same pore group is greater than or equal to 50 mm and less than or equal to 80 mm. Even further, the spiral travel distance between adjacent pores 181 in the same pore group is greater than or equal to 55 mm and less than or equal to 75 mm.

[0067] Within the same pore group, the vertical distance between the first pore (k,1) and the last pore (k,n) in the axial direction is greater than or equal to 100 mm and less than or equal to 400 mm. Furthermore, the vertical distance between the first pore (k,1) and the last pore (k,n) in the axial direction is greater than or equal to 150 mm and less than or equal to 300 mm.

[0068] Between adjacent air hole groups, the distance between them in the axial direction of the air roller continuously increases from the end closest to the gas input mechanism 19 to the end furthest from the gas input mechanism 19, and this distance increases in increments of a constant a (in mm). For example, let d1 be the distance between air hole group k and air hole group k-1 in the axial direction of the air roller, and d2 be the distance between air hole group k+1 and air hole group k in the axial direction of the air roller, where 1≤k≤n-1, and d2-d1=a. This constant a is determined by factors such as the type of adhesive film and the production line speed during actual production. Specifically, this constant a can be greater than or equal to 0.05mm and less than or equal to 0.5mm, further, it can be greater than or equal to 0.1mm and less than or equal to 0.40mm, and even further, it can be greater than or equal to 0.15mm and less than or equal to 0.3mm. In a more specific scheme, the minimum spacing between adjacent pore groups can be set to 31 mm, the increment value a can be set to 0.2 mm, the spacing between adjacent pore groups increases in the manner described above, and 5 to 7 pores are set in one pore group.

[0069] Furthermore, the arrangement of the air holes 181 in the first region 182 can also be derived from the aforementioned arrangement. For example, to better adapt to production needs, based on the aforementioned arrangement of air holes 181 in the first region 182, some ineffective air holes (such as air hole (1,1) and some nearby air holes 181) and some incomplete air holes at the edges can be removed from the regions at both ends of the air roller 18. Removing the aforementioned ineffective and incomplete air holes can prevent gas from escaping through them, enhance the gas pressure of the gas discharged from the effective air holes 181, improve the buoyancy effect and efficiency of the high-pressure gas blown from the surface of the air roller 18 on the adhesive film, and also reduce energy consumption at gas input and other points.

[0070] As an optional implementation method, such as Figure 8 and Figure 9As shown, the film conveying device 100 also includes an angle adjustment mechanism 22. The angle adjustment mechanism 22 is coupled between the first folding roller 15 and the base 11 and / or coupled between the second folding roller 16 and the base 11. The angle adjustment mechanism 22 is disposed at at least one end of the first folding roller 15 and / or at least one end of the second folding roller 16. Similar to the translation adjustment mechanism 17, the angle adjustment mechanism 22 can adjust the angle between the first folding roller 15 or the second folding roller 16 and the preset direction 101 according to the material and width of the film, thereby adjusting the output position and direction of the film. The angle adjustment mechanism 22 can be coupled only between the first folding roller 15 and the base 11 to provide a certain degree of rotational freedom for the first folding roller 15. The angle adjustment mechanism 22 can also be coupled only between the second folding roller 16 and the base 11 to provide a certain degree of rotational freedom for the second folding roller 16. The angle adjustment mechanism 22 can also be simultaneously coupled between the first flipping roller and the base 11, and between the second folding roller 16 and the base 11, so that both the first flipping roller and the second folding roller 16 have rotational freedom. The angle adjustment mechanism 22 can be provided only at one end of the first folding roller 15, or it can be provided at both ends of the first folding roller 15. When the angle adjustment mechanism 22 is provided only at one end of the first folding roller 15 or the second folding roller 16, the entire first folding roller 15 or the second folding roller 16 can rotate around the other end of the first folding roller 15 or the second folding roller 16 to achieve angle adjustment of the first folding roller 15 or the second folding roller 16. When the angle adjustment mechanism 22 is provided at both ends of the first folding roller 15 or the second folding roller 16, the first folding roller 15 or the second folding roller 16 can rotate around a certain fixed point on the first folding roller 15 or the second folding roller 16 with the assistance of the angle adjustment mechanism 22 to achieve angle adjustment of the first folding roller 15 or the second folding roller 16. By adjusting the angles of the first folding roller 15 and the second folding roller 16, the positional relationship of the film on the output roller 13 when it is output can be ultimately changed. The principle of adjusting the first folding roller 15 or the second folding roller 16 via the angle adjustment mechanism 22 to change the positional relationship of the film on the output roller 13 is basically similar to the principle of adjustment via the translation adjustment mechanism 17. Specifically, adjusting the angle of the first folding roller 15 changes the positional relationship between the first folding roller 15 and the transverse roller 14, thereby changing the position of the film on the transverse roller 14 after it is folded by the first folding roller 15 and input to the transverse roller 14, ultimately changing the positional relationship of the film on the output roller 13 when it is output. The same principle applies to the second folding roller 16. Adjusting the angle of the second folding roller 16 can change the position and angle relationship between the transverse roller 14 and the second folding roller 16, thereby changing the position of the film on the second folding roller 16 after it is folded by the transverse roller 14 and input to the second folding roller 16, and finally changing the position of the film on the output roller 13 when it is output to the output roller 13.

[0071] As an optional implementation method, such as Figure 10 As shown, the film transfer device 100 satisfies one of the following first settings and / or one of the following second settings. The first setting includes that when the angle adjustment mechanism 22 is coupled between the first folding roller 15 and the base 11, the angle adjustment mechanism 22 is configured to rotate the first folding roller 15 between a first position and a second position, wherein the angle α between the first folding roller 15 and the preset direction 101 is 40° in the first position and 50° in the second position; or when the translation adjustment device is coupled between the first folding roller 15 and the base 11, the angle α between the first folding roller 15 and the preset direction 101 is substantially greater than or equal to 40° and less than or equal to 50°. The second setting includes that when the angle adjustment mechanism 22 is coupled between the second folding roller 16 and the base 11, the angle adjustment mechanism 22 is configured to rotate the second folding roller 16 between a third position and a fourth position. In the third position, the angle β between the second folding roller 16 and the preset direction 101 is 40°, and in the fourth position, the angle β between the second folding roller 16 and the preset direction 101 is 50°; or when the translation adjustment device is coupled between the second folding roller 16 and the base 11, the angle β between the second folding roller 16 and the preset direction 101 is basically greater than or equal to 40° and less than or equal to 50°.

[0072] In one specific embodiment of this application, the first folding roller 15 may be provided with at most one of the translation adjustment mechanism 17 or the angle adjustment mechanism 22, and similarly, the second folding roller 16 may also be provided with at most one of the translation adjustment mechanism 17 or the angle adjustment mechanism 22. That is, the first folding roller 15 may not have both the translation adjustment mechanism 17 and the angle adjustment mechanism 22 provided, or it may only have one of the translation adjustment mechanism 17 or the angle adjustment mechanism 22 provided, but it cannot have both the translation adjustment mechanism 17 and the angle adjustment mechanism 22 provided simultaneously. Providing both the translation adjustment mechanism 17 and the angle adjustment mechanism 22 simultaneously at the first folding roller 15 is uneconomical and may also lead to mutual interference. The arrangement of the second folding roller 16 is basically similar to that of the first folding roller 15.

[0073] After the angle adjustment mechanism 22 is set, the position between the folding roller (including the first folding roller 15 or the second folding roller 16, the same below) and the input roller 12, output roller 13, or transverse roller 14 is basically fixed. This positional relationship cannot be adjusted by the angle adjustment mechanism 22 itself. The angle adjustment mechanism 22 can only adjust the angle between the folding roller and the preset direction 101 by rotating the folding roller. The angle adjustment range of the angle adjustment mechanism 22 is 5° to 20°; furthermore, the angle adjustment range of the angle adjustment mechanism 22 can be set to allow the angle between the folding roller and the preset direction 101 to be adjusted within the range of 40° to 50°. This angle adjustment range is sufficient to meet the adjustment range required for most film production processes.

[0074] After the translation adjustment mechanism 17 is set, the angle between the folding roller and the preset direction 101 is basically fixed. The angle between the folding roller and the preset direction 101 cannot be adjusted by the translation adjustment mechanism 17 itself; the translation adjustment mechanism 17 can only adjust the position of the folding roller along the set direction. Specifically, when setting the translation adjustment mechanism 17, the included angle between the folding roller and the preset direction 101 can be set at a certain angle within the range of 40° to 50°. Setting the included angle between the folding roller and the preset direction 101 within this range can better meet the requirements of most film folding processes. In actual use, production needs can be met by simply adjusting the translation adjustment mechanism 17.

[0075] As an optional implementation method, such as Figure 11 As shown, at least one of the input roller 12, output roller 13, and transverse roller 14 is configured as an active roller. The active roller is equipped with a corresponding drive source and can rotate autonomously under the drive of the drive source. In the film transfer device 100 of this application, the active roller can adaptively adjust its rotational speed according to the running speed of the film, so that the rotational speed of the active roller matches the running speed of the film, avoiding the stretching or compression of the film due to a speed difference between the active roller and the film, thus improving the quality of the film. When the input roller 12 is an active roller, it can provide initial tension for the running of the film and actively pull the film into the film transfer device 100 of this application. When the output roller 13 is an active roller, it can actively move to the point where the film is output from the film transfer device 100, and can also provide tension for the output film, stabilizing the overall tension transmission of the film in the film transfer device 100. When the transverse roller 14 is the active roller, it can provide mid-section traction force, maintain the tension of the adhesive film, and keep the adhesive film constant in the adhesive film transfer device 100, avoiding excessive stretching or compression.

[0076] As an optional implementation method, such as Figure 12As shown, the film conveying device 100 also includes a tension control mechanism 23, which is configured to adjust the running tension of the film by controlling the rotational speed of the transverse roller 14. The tension control mechanism 23 can adjust the running tension of the film by controlling the rotational speed of the transverse roller 14, thereby compensating for and balancing the tension loss of the film during the folding process. This increases the stability of the film folding process and ensures the quality of the film.

[0077] As an optional implementation method, such as Figure 13 As shown, the film transport device 100 also includes a support assembly 24 disposed within the processing space. To effectively support the film without interfering with film transport and folding, the support assembly 24 is primarily disposed in the following areas: the area between the input roller 12 and the first folding roller 15, the area between the first folding roller 15 and the transverse roller 14, the area between the transverse roller 14 and the second folding roller 16, and the area between the second folding roller 16 and the output roller 13. In the film transport device 100 of this application, these areas are substantially triangular. The support assemblies 24 disposed in the above four areas can be respectively referred to as the first support assembly, the second support assembly, the third support assembly, and the fourth support assembly. The upper surface of the first support assembly is configured to be substantially flush with the bottom of the first folding roller 15, the upper surface of the second support assembly is configured to be substantially flush with the top of the first folding roller 15, the upper surface of the third support assembly is configured to be substantially flush with the bottom of the second folding roller 16, and the upper surface of the fourth support assembly is configured to be substantially flush with the top of the second folding roller 16. The adhesive film processed in the adhesive film transfer device 100 of this application is characterized by its large weight, wide width, and susceptibility to stretching and deformation. Throughout the processing space, the adhesive film is primarily supported by the first folding roller 15 or the second folding roller 16, which can easily lead to insufficient support. In such cases, the adhesive film is prone to stretching and deformation due to its own weight, affecting its quality. By providing support components 24 within the processing space, the adhesive film can be supported, preventing stretching and deformation caused by its own weight. The upper surface of the first support component is configured to be substantially flush with the bottom of the first folding roller 15, providing support during the transfer of the adhesive film from the input roller 12 to the first folding roller 15. Similarly, the second, third, and fourth support components also provide support for the adhesive film at its respective processing stage in their respective areas. In actual production, all four support components 24 can be installed simultaneously, or a specific number of support components 24 can be installed at appropriate locations according to actual needs. Regarding the specific arrangement of the support component 24 in the corresponding area, the support component 24 can cover the entire area, or the support component 24 can be set only in a part of the area, so as to support the adhesive film and avoid problems such as stretching of the adhesive film during transmission in the corresponding area.

[0078] As an optional implementation, the support assembly 24 includes a support member 241 with rotational degrees of freedom. The support member 241 with rotational degrees of freedom not only supports the adhesive film but also improves the smoothness of film transport, preventing deformation and stretching of the film due to excessive friction during transport. Specifically, the support member 241 with rotational degrees of freedom can be a rotatable roller-like component, with its extension direction substantially perpendicular to the film's running direction. Alternatively, the support member 241 can be a universal ball or a universal ball bearing, etc. Universal balls have greater rotational degrees of freedom, allowing rotation in any direction within a plane, making them suitable for supporting and transporting adhesive films of various materials and widths. Simultaneously, the smaller contact area between the universal ball and the film reduces friction during operation, preventing the film from being stretched and deformed due to excessive friction.

[0079] As an optional implementation method, such as Figure 14 As shown, the film transfer device 100 also includes a translational transfer mechanism 25, which is located on one side of the processing space. The translational transfer mechanism 25 can transfer the film in a conventional manner, that is, in a normal way without flipping the film. After the film production line is set up, adjusting or modifying the production line is quite difficult and inconvenient. Furthermore, a single film production line may need to produce multiple types of film, and some films may require flipping while others do not. The film transport device 100 of this application includes a translational transport mechanism 25 parallel to the aforementioned flipping mechanism (i.e., the mechanism composed of the input roller 12, output roller 13, transverse roller 14, first folding roller 15, and second folding roller 16). When the film needs to be flipped, it can be processed and flipped via the aforementioned flipping mechanism; when the film does not need to be flipped, it can be processed via the translational transport mechanism 25. This facilitates the production of various types of films on the production line and reduces the manufacturing cost of the film. The translational transport mechanism 25 can be located on either side of the processing space, as long as it can transport the film and does not interfere with the aforementioned flipping mechanism.

[0080] As an optional implementation, the translational transfer mechanism 25 includes at least one transfer roller 251. The translational transfer mechanism 25 includes at least one transfer roller 251 capable of guiding the adhesive film and transferring it from one side of the aforementioned flipping mechanism. Further, the translational transfer mechanism 25 may be provided with two or more transfer rollers 251. When the input roller 12 and output roller 13 are arranged parallel to each other, the transfer roller 251 is also arranged parallel to either the input roller 12 or the output roller 13. The transfer roller 251 cooperates with the input roller 12 and output roller 13 to translate and transfer the adhesive film in a conventional manner. The number of transfer rollers 251 on the translational transfer mechanism 25 can be set according to actual needs to ensure that the adhesive film does not interfere with the aforementioned flipping mechanism during transfer, and also to ensure that the adhesive film does not undergo stretching or deformation during transfer.

[0081] In this embodiment, the film flipping process is achieved by incorporating a first folding roller, a transverse roller, and a second folding roller that cooperate with each other in the film conveying device. A translation adjustment mechanism is also provided to adjust either the first or second folding roller. Adjusting the first or second folding roller using this mechanism allows for adjustment of the film's output position, enabling the film conveying device to meet the production needs of films of different materials and widths, while ensuring the quality of the produced film.

[0082] This application embodiment also provides a film transport method, which is implemented by the aforementioned film transport device 100. Specifically, the film transport method includes an input roller 12 pulling and inputting a film with its face facing upwards; the film being flipped by a first folding roller 15 and then transported with its face facing downwards; the film being flipped by a transverse roller 14 and then transported with its face facing upwards; the film being flipped by a second folding roller 16 and then transported with its face facing downwards; and an output roller 13 pulling and outputting the film with its face facing downwards.

[0083] This application also provides an adhesive film, which is obtained after being processed by the aforementioned adhesive film transfer device 100 or after being processed by the aforementioned adhesive film transfer method.

[0084] Finally, it should be noted that the above are only some preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A film transfer device, characterized in that, The input direction of the adhesive film is defined as a preset direction, and the adhesive film transport device includes: Base; An input roller, which is rotatably connected to a first side of the base; An output roller, which is rotatably connected to a second side of the base; A transverse roller is rotatably connected to the third side of the base, and there is a processing space between the input roller, the transverse roller, and the output roller; A first folding roller is disposed in the processing space; A second folding roller is disposed in the processing space, and the second folding roller is configured to intersect with the first folding roller and be disposed on opposite sides; A translation adjustment mechanism is coupled between the first folding roller and the base and / or coupled between the second folding roller and the base. The translation adjustment mechanism is disposed at both ends of the first folding roller and / or both ends of the second folding roller. The translation adjustment mechanism is configured to provide translational freedom for the first folding roller or the second folding roller.

2. The film transfer device according to claim 1, characterized in that: At least one of the first folding roller or the second folding roller is an air roller, the air roller is provided with air holes penetrating the surface, and one end of the air roller is connected to a gas input mechanism; Preferably, the film transfer device further includes a gas temperature control mechanism, which is coupled between the gas input mechanism and the air roller.

3. The film transfer device according to claim 2, characterized in that: A plane containing the axis of the air roller is defined as a preset plane, which divides the surface of the air roller into a first region with air holes and a flat second region. The pores in the first region are configured as follows: The air holes in the first region are distributed in a spiral shape. The first region includes at least two groups of air holes that are basically parallel to each other. The adjacent groups of air holes are arranged along the axial direction of the air roller. In the direction from the end near the gas input mechanism to the end away from the gas input mechanism, the distance between adjacent groups of air holes gradually increases. The distance between adjacent air holes in the same group of air holes is basically the same.

4. The film transfer device according to claim 1, characterized in that: The film conveying device further includes an angle adjustment mechanism, which is coupled between the first folding roller and the base and / or coupled between the second folding roller and the base. The angle adjustment mechanism is disposed at at least one end of the first folding roller and / or at least one end of the second folding roller.

5. The film transfer device according to claim 4, characterized in that: The film transfer device satisfies one of the following first settings and / or one of the following second settings; The first setting includes, When the angle adjustment mechanism is coupled between the first folding roller and the base, the angle adjustment mechanism is configured to rotate the first folding roller between a first position and a second position. In the first position, the angle between the first folding roller and the preset direction is 40°, and in the second position, the angle between the first folding roller and the preset direction is 50°; or When the translation adjustment device is coupled between the first folding roller and the base, the included angle between the first folding roller and the preset direction is basically greater than or equal to 40° and less than or equal to 50°. The second setting includes, When the angle adjustment mechanism is coupled between the second folding roller and the base, the angle adjustment mechanism is configured to rotate the second folding roller between a third position and a fourth position, wherein in the third position the angle between the second folding roller and the preset direction is 40°, and in the fourth position the angle between the second folding roller and the preset direction is 50°; or When the translation adjustment device is coupled between the second folding roller and the base, the angle between the second folding roller and the preset direction is basically greater than or equal to 40° and less than or equal to 50°.

6. The film transfer device according to claim 1, characterized in that: At least one of the input roller, the output roller, and the transverse roller is configured as an active roller; preferably, the film transfer device further includes a tension control mechanism configured to adjust the running tension of the film by controlling the rotational speed of the transverse roller.

7. The film transfer device according to claim 1, characterized in that: The film transfer device further includes at least one of a first support component, a second support component, a third support component, or a fourth support component disposed within the installation space. The upper surface of the first support component is configured to be substantially flush with the bottom of the first folding roller, the upper surface of the second support component is configured to be substantially flush with the top of the first folding roller, the upper surface of the third support component is configured to be substantially flush with the bottom of the second folding roller, and the upper surface of the fourth support component is configured to be substantially flush with the top of the second folding roller. The first support assembly, the second support assembly, the third support assembly, and the fourth support assembly each include a support member with rotational degrees of freedom.

8. The film transfer device according to claim 1, characterized in that: The film conveying device further includes a translational conveying mechanism, which is located on at least one side of the processing space; Preferably, the translational transfer mechanism includes at least one transfer roller.

9. A method for film transfer, characterized in that: The adhesive film transfer method is implemented by the adhesive film transfer device as described in any one of claims 1 to 8; The film transfer method includes, The input roller pulls and feeds in the film with the front side facing up; The adhesive film is transported with its front side facing down after being flipped by the first folding roller; The adhesive film is transported with its front side facing upwards after being flipped by the transverse roller. The adhesive film is transported with its front side facing down after being flipped over by the second folding roller. The output roller pulls and outputs the adhesive film with the front side facing down.

10. A film, characterized in that: The adhesive film is processed by the adhesive film transfer device as described in any one of claims 1 to 8 or by the adhesive film transfer method as described in claim 9.

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