Online coating device and method for high-barrier film

Abstract

The invention relates to the technical field of film production, and mainly relates to an online coating device and method for a high-barrier film. The online coating device for the high-barrier film comprises a coating roller, a coating scraper arranged above the coating roller and used for scraping a coating, a heating and heat dissipation component and an adjusting component, a heating pipe and a heat dissipation fan are integrated through an embedded plate of the heating and heat dissipation component, rotation is driven by a rotating motor, a heating / cooling mode is rapidly switched, and the coating efficiency is improved. The heating pipe synchronously preheats the coating roller and films on the two sides (releasing internal stress) before coating and accelerates solvent volatilization after coating, the cooling fan is switched after coating is completed, rapid cooling of the coating roller and chipping cleaning are achieved, and the arranged adjusting component can drive the two sets of heating and cooling components to be folded to form a high-temperature focusing area, so that the cooling effect is improved, and the service life of the coating roller is prolonged. The device is suitable for high-strength treatment of narrow films, and can solve the problem of insufficient heating of the edges of wide films.

Description

Technical Field

[0001] The present invention relates to the technical field of film production, and in particular to an online coating device and method for a high-barrier film. Background Art

[0002] With the rapid development of the packaging industry, high-barrier films have been widely used in the packaging of food, medicine, chemicals and other products due to their excellent barrier properties. At present, in the existing high-barrier film coating process, temperature control of the coating roller is the core difficulty. Traditional coating equipment usually uses an independent oven to preheat the base film, but the heat transfer efficiency is low, which can easily lead to uneven heating of the film (lateral temperature difference > 5°C), insufficient internal stress release, and easy pinholes after coating. In the cooling process, coolant is built into the coating roller, but the cooling rate is slow (> 10 minutes / cycle), and the residual solvent is not completely evaporated, affecting the density of the barrier layer.

[0003] To address the shortcomings of existing technologies, the present invention provides an online coating device and method for high-barrier films. Through an optimized structural design, this device achieves rapid and uniform heating and heat dissipation of the coating roller, as well as precise adjustment of the gap between the coating blade and the coating roller, thereby ensuring the coating quality of the high-barrier film. Summary of the Invention

[0004] The object of the present invention is to provide an online coating device and method for a high-barrier film, so as to solve the problem raised in the above background technology that multiple brake pads cannot be quickly and evenly placed during the heat treatment process of the brake pads.

[0005] To achieve the above object, the present invention provides the following technical solution: an online coating device for a high barrier film, comprising a coating roller, and

[0006] A coating scraper is provided above the coating roller for scraping the coating, and roller covers are fixedly embedded on both sides of the coating roller, and a roller shaft is fixedly installed on each roller cover;

[0007] Also includes:

[0008] A heating and heat dissipation component, wherein the heating and heat dissipation component is provided in two groups and mounted on two roller shafts, and the heating and heat dissipation component includes a mosaic plate, and a heat dissipation fan for dissipating heat from the coating roller and a heating pipe for heating the coating roller and the film are respectively provided on both sides of the mosaic plate;

[0009] The regulating component is provided with two groups, and the roller surface of the coating roller is cooled or heated by adjusting the two groups of heating and heat dissipating components through the regulating component.

[0010] Preferably, a heat dissipation frame and a heating frame are fixedly embedded on both sides of the mosaic plate, a plurality of the heat dissipation fans are fixedly embedded in the heat dissipation frame, and a plurality of the heating pipes are fixedly embedded in the heating frame.

[0011] Preferably, one side of the roller shaft is sleeved with two rotatably connected rotating plates, one end of the rotating plate is fixedly embedded with a collar, and the collar is sleeved in an annular groove provided on the roller shaft and rotatably connected to the annular groove, the rotating plate is rotatably connected to the embedded plate via a rotating shaft, and a guide rod is fixedly embedded in the middle of the outer plate wall of the rotating plate;

[0012] A rotating motor is fixedly mounted on the rotating plate through a frame, and an output end of the rotating motor is fixedly connected to a rotating shaft on the rotating plate.

[0013] Preferably, the adjusting component comprises a U-shaped plate, a curved slide rail is fixedly mounted on the bottom of the U-shaped plate, and a curved slide groove is provided in the curved slide rail;

[0014] The guide rods on the two rotating plates on the same side are both inserted into the arcuate sliding grooves provided on the arcuate sliding rails and are slidably connected with the arcuate sliding grooves.

[0015] Preferably, the adjusting component also includes a driving component, which includes a threaded rod, a threaded connecting block, a push plate and a driving motor. The threaded rod is rotatably mounted on the U-shaped plate, and two threaded sections with opposite thread directions are provided on both sides of the threaded rod. Each threaded section is sleeved with a threaded connecting block with a threaded connection, and a vertically arranged push plate is fixedly mounted on the bottom of each threaded connecting block. The inner side wall of the push plate is abutted against the guide rod, and the driving motor is fixedly mounted on the outer side wall of the U-shaped plate, and the output end of the driving motor is fixedly connected to one end of the threaded rod.

[0016] Preferably, an arc-shaped spring is installed in the arc-shaped slide groove of the arc-shaped slide rail, and both ends of the arc-shaped spring are fixedly connected to the inner rod walls of the two guide rods respectively.

[0017] Preferably, an L-shaped fixing plate is fixedly installed on the top of the U-shaped plate, and fixing holes are opened on the horizontal plate surface of the L-shaped fixing plate.

[0018] Preferably, a mounting plate is fixedly installed between the two U-shaped plates, and a plurality of equally spaced micro hydraulic cylinders are installed at the bottom of the mounting plate. A tool holder is fixedly installed at the output end of the micro hydraulic cylinder, and the coating scraper is fixedly installed on the tool holder by screws.

[0019] In order to achieve the above technical objectives, the present invention also provides a method for online coating of a high barrier film, which specifically comprises the following steps:

[0020] S1. Install the coating roller on the coating machine using the roller shaft, and then use screws to fix the L-shaped fixing plate to the inner wall of the coating machine, so that the L-shaped fixing plate forms a support frame for the heating and heat dissipation component, the rotating plate and the adjustment component, and the coating roller located below the heating and heat dissipation component serves as a conveying roller structure for the film;

[0021] S2. Before coating, the rotating motor is turned on to drive the interlocking plate to rotate around the rotating plates on both sides, so that the heating tube in the heating frame faces the coating roller, so that the coating roller and the uncoated and coated films on both sides of the coating roller are heated by the heating tube. The preheating can cause the uncoated film to undergo slight and uniform thermal expansion under controlled conditions, releasing some internal stress. By heating the coated film, the volatilization of the solvent (organic solvent or water) in the coating liquid can be accelerated, so that the coating changes from liquid to solid.

[0022] S3, turning on the micro hydraulic cylinder to drive the coating blade close to the top of the coating roller, then starting the coating machine so that the film passes between the coating blade and the coating roller, while at the same time the coating liquid is transported above the film, so that the coating blade scrapes the coating liquid on the film;

[0023] S4. After the film coating is completed, the rotating motor is turned on to drive the interlocking plate to rotate around the rotating plates on both sides, so that the cooling fan in the heat dissipation frame faces the coating roller. After the cooling fan is turned on, the coating roller can be quickly cooled.

[0024] Preferably, in step S2, if it is necessary to strengthen the heating of the film around the coating roller, the driving motor is turned on to drive the threaded rod to rotate, so that the threaded connection blocks on both sides of the threaded rod drive the two push plates to slide toward or away from each other. If the push plates slide toward each other, the two guide rods can be pushed to slide toward each other along the arc-shaped slide groove. Therefore, the two rotating plates on the roller shaft rotate toward each other through the sleeve ring, so that the two groups of heating and heat dissipation components are closed together, thereby achieving high-intensity heat collection or high-intensity heat dissipation around the coating roller. If the push plates slide away from each other, the push plates restrict the guide rods. At this time, the two guide rods are pushed to slide away from each other along the arc-shaped slide groove under the action of the elastic force of the arc spring compressed in the arc-shaped slide groove. Therefore, the two rotating plates on the roller shaft rotate away from each other through the sleeve ring, so that the two groups of heating and heat dissipation components are dispersed from each other, thereby achieving the range of heating or heat dissipation of the film around the coating roller.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention integrates a heating tube (heating side) and a heat dissipation fan (heating side) through a mosaic plate of a heating and heat dissipation component. By rotating the motor to drive the rotation, the heating / cooling mode can be quickly switched, reducing the space occupied by the equipment. Before coating, the heating tube synchronously preheats the coating roller and the films on both sides (releasing internal stress) and accelerates solvent volatilization after coating. After coating, the heat dissipation fan is switched to achieve rapid cooling of the coating roller and debris cleaning;

[0027] 2. The adjusting component in the present invention controls the bidirectional threaded rod through the driving motor to push the guide rod to move toward / away from each other along the arc-shaped slide rail. If they move toward each other, the two sets of heating and heat dissipation components close together to form a high-temperature focusing area, focusing heat / wind to the middle of the coating roller, which is suitable for high-intensity processing of narrow films and can solve the problem of insufficient heating at the edges of wide films. If they move away from each other, the arc spring resets and pushes the guide rod to separate, thereby expanding the temperature control range and adapting to the uniform coverage of wide films. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the present invention;

[0030] Figure 3 This is one of the structural diagrams of the heating and heat dissipation component of the present invention;

[0031] Figure 4 This is the second structural diagram of the heating and heat dissipation component of the present invention;

[0032] Figure 5 This is a schematic diagram of the installation structure of the rotating plate on the roller cover of the present invention;

[0033] Figure 6 It is a structural schematic diagram of the adjusting component of the present invention;

[0034] Figure 7 Schematic diagram of the structure of the coating blade of the present invention.

[0035] In the figure: 1. coating roller; 2. roller cover; 3. roller shaft; 4. heating and heat dissipation component; 41. interlocking plate; 42. heat dissipation frame; 43. heating frame; 44. heat dissipation fan; 45. heating tube; 5. rotating plate; 51. collar; 6. guide rod; 7. adjustment component; 71. U-shaped plate; 72. L-shaped fixing plate; 73. arc-shaped slide rail; 73a. arc-shaped slide groove; 74. driving component; 741. threaded rod; 742. threaded connection block; 743. push plate; 744. driving motor; 75. arc-shaped spring; 8. rotating motor; 9. coating scraper; 91. mounting plate; 92. micro hydraulic cylinder; 93. tool holder. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] See also Figure 1 - Figure 7 The figure shows an online coating device for a high-barrier film, comprising a coating roller 1, a coating scraper 9 arranged above the coating roller 1 for scraping the coating, a heating and heat dissipation component 4, and an adjusting component 7. Roller covers 2 are fixedly engaged on both sides of the coating roller 1, and a roller shaft 3 is fixedly mounted on each roller cover 2. The coating roller 1 is mounted on the coating machine using the roller shaft 3, and then the L-shaped fixing plate 72 is fixed to the inner wall of the coating machine using screws, so that the L-shaped fixing plate 72 constitutes a support frame for the heating and heat dissipation component 4, the rotating plate 5, and the adjusting component 7, and the coating roller 1 located at the lower part of the warm heat dissipation component 4 serves as a conveying roller structure for the film.

[0038] In the embodiments of the present invention, see Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 as well as Figure 7 The heating and heat dissipation components 4 are provided with two groups and mounted on the two roller shafts 3. The heating and heat dissipation components 4 include a mosaic plate 41. On both sides of the mosaic plate 41, there are respectively provided a heat dissipation fan 44 for dissipating heat from the coating roller 1 and a heating tube 45 for heating the coating roller 1 and the film. A heat dissipation frame 42 and a heating frame 43 are fixedly embedded on both sides of the mosaic plate 41. A plurality of heat dissipation fans 44 are fixedly embedded in the heat dissipation frame 42, and a plurality of heating tubes 45 are fixedly embedded in the heating frame 43.

[0039] One side of the roller shaft 3 is sleeved with two rotatably connected rotating plates 5, one end of the rotating plate 5 is fixedly embedded with a ring 51, and the ring 51 is sleeved in the annular groove opened on the roller shaft 3 and rotatably connected to the annular groove, the rotating plate 5 is rotatably connected to the embedding plate 41 through the rotating shaft, and a guide rod 6 is fixedly embedded in the middle of the outer plate wall of the rotating plate 5, and a rotating motor 8 is fixedly installed on the rotating plate 5 through the frame, and the output end of the rotating motor 8 is fixedly connected to the rotating shaft on the rotating plate 5.

[0040] It should be noted that: before coating, the rotating motor 8 is turned on to drive the interlocking plate 41 to rotate around the rotating plates 5 on both sides, so that the heating tube 45 in the heating frame 43 faces the coating roller 1, so that the coating roller 1 and the uncoated and coated films on both sides of the coating roller 1 are heated by the heating tube 45, and preheating can cause the uncoated film to undergo slight and uniform thermal expansion under controlled conditions, releasing some internal stress, and by heating the coated film, the volatilization of the solvent (organic solvent or water) in the coating liquid can be accelerated, so that the coating is transformed from liquid to solid.

[0041] It should also be noted that: after the film coating is completed, the rotating motor 8 is turned on to drive the interlocking plate 41 to rotate around the rotating plates 5 on both sides, so that the heat dissipation fan 44 in the heat dissipation frame 42 faces the coating roller 1. After turning on the heat dissipation fan 44, the coating roller 1 can quickly dissipate heat, and at the same time, the paper scraps remaining on the coating roller 1 can also be blown away. Since the coating roller 1 is heated by an external heat source, the cooling rate of the coating roller 1 is extremely fast after the heat source is turned off and the heat dissipation fan 44 is turned on.

[0042] Therefore, in the present application, the interlocking plate 41 of the heating and heat dissipation component 4 integrates the heating tube 45 (heating side) and the heat dissipation fan 44 (heating side), and is driven to rotate by the rotating motor 8 to quickly switch the heating / cooling mode to reduce the space occupied by the equipment. Before coating, the heating tube 45 synchronously preheats the coating roller 1 and the films on both sides (to release internal stress) and accelerates the volatilization of the solvent after coating. After coating is completed, the heat dissipation fan 44 is switched to achieve rapid cooling of the coating roller 1 and debris cleaning.

[0043] In addition, in order to prevent the operator from being scalded by the heating tube 45, a high-temperature resistant ceramic protective cover can be added to the outside of the heating frame 43.

[0044] In the embodiments of the present invention, see Figure 1 、 Figure 2 as well as Figure 6The adjusting component 7 is provided with two groups, and the roller surface of the coating roller 1 is cooled or heated by adjusting the two groups of heating and heat dissipation components 4 through the adjusting component 7. The adjusting component 7 also includes a driving component 74, which includes a threaded rod 741, a threaded connecting block 742, a pushing plate 743 and a driving motor 744. The threaded rod 741 is rotatably mounted on the U-shaped plate 71, and two threaded sections with opposite thread directions are provided on both sides of the threaded rod 741. Each threaded section is sleeved with a threaded connecting block 742 that is threadedly connected, and a vertically arranged pushing plate 743 is fixedly mounted on the bottom of each threaded connecting block 742. The inner side wall of the pushing plate 743 is against the guide rod 6. The driving motor 744 is fixedly mounted on the outer side wall of the U-shaped plate 71, and the output end of the driving motor 744 is fixedly connected to one end of the threaded rod 741, and an arc spring 75 is installed in the arc slide groove 73a provided in the arc slide rail 73, and the two ends of the arc spring 75 are respectively fixedly connected to the inner rod wall of the two guide rods 6.

[0045] It should be noted that: the driving motor 744 is turned on to drive the threaded rod 741 to rotate, so that the threaded connection blocks 742 on both sides of the threaded rod 741 drive the two push plates 743 to slide toward or away from each other;

[0046] When the push plates 743 slide toward each other, the two guide rods 6 can be pushed to slide toward each other along the arc-shaped slide groove 73a. As a result, the two rotating plates 5 on the roller shaft 3 rotate toward each other through the collar 51, so that the two sets of heating and heat dissipation components 4 are closed together, thereby achieving high-intensity heat collection or high-intensity heat dissipation of the coating roller 1.

[0047] If the push plates 743 slide in opposite directions, the push plates 743 no longer restrict the guide rods 6. At this time, the elastic force of the arc spring 75 compressed in the arc groove 73a pushes the two guide rods 6 to slide in opposite directions along the arc groove 73a. Therefore, the two rotating plates 5 on the roller shaft 3 rotate in opposite directions through the ring 51, so that the two groups of heating and heat dissipation components 4 are dispersed from each other.

[0048] In this embodiment, if it is necessary to strengthen the heating of the film around the coating roller 1, the driving motor 744 is turned on to drive the threaded rod 741 to rotate, so that the threaded connection blocks 742 on both sides of the threaded rod 741 drive the two push plates 743 to slide toward or away from each other. If the push plates 743 slide toward each other, they can push the two guide rods 6 to slide toward each other along the arc-shaped slide groove 73a. Therefore, the two rotating plates 5 on the roller shaft 3 rotate toward each other through the ring 51, so that the two sets of heating and heat dissipation components 4 are engaged with each other. The two guide rods 6 are pushed to slide in opposite directions along the arc groove 73a under the action of the elastic force of the arc spring 75 compressed in the arc groove 73a. Therefore, the two rotating plates 5 on the roller shaft 3 rotate in opposite directions through the sleeve ring 51, so that the two groups of heating and heat dissipation components 4 are dispersed from each other, realizing the range of heating or heat dissipation of the film around the coating roller 1.

[0049] Therefore, the adjusting component 7 controls the bidirectional threaded rod 741 through the driving motor 744, pushing the guide rod 6 to move toward / away from each other along the arc-shaped slide rail 73. If they move toward each other, the two sets of heating and heat dissipation components 4 close together to form a high-temperature focusing area, focusing heat / wind to the middle of the coating roller 1, which is suitable for high-intensity processing of narrow films and can solve the problem of insufficient heating at the edges of wide films; if they move away from each other, the arc spring 75 resets and pushes the guide rod 6 to separate, thereby expanding the temperature control range and adapting to the uniform coverage of wide films.

[0050] An L-shaped fixing plate 72 is fixedly installed on the top of the U-shaped plate 71 , and fixing holes are opened on the horizontal plate surface of the L-shaped fixing plate 72 , so that the L-shaped fixing plate 72 is fixedly installed on the coating machine.

[0051] In this solution, a mounting plate 91 is fixedly installed between the two U-shaped plates 71, and a plurality of equally spaced micro hydraulic cylinders 92 are installed at the bottom of the mounting plate 91. A tool holder 93 is fixedly installed at the output end of the micro hydraulic cylinder 92, and the coating scraper 9 is fixedly installed on the tool holder 93 by screws. The spacing between the coating scraper 9 and the coating roller 1 can be flexibly adjusted through the micro hydraulic cylinder 92.

[0052] The method for online coating of a high barrier film provided in this embodiment specifically includes the following steps:

[0053] S1. Install the coating roller 1 onto the coating machine using the roller shaft 3. Subsequently, fix the L-shaped fixing plate 72 to the inner wall of the coating machine using screws, so that the L-shaped fixing plate 72 forms a support frame for the heating and heat dissipation component 4, the rotating plate 5, and the adjustment component 7. The coating roller 1 located below the heating and heat dissipation component 4 serves as a conveying roller structure for the film.

[0054] S2. Before coating, the rotating motor 8 is turned on to drive the interlocking plate 41 to rotate around the rotating plates 5 on both sides, so that the heating tubes 45 in the heating frame 43 face the coating roller 1, so that the coating roller 1 and the uncoated and coated films on both sides of the coating roller 1 are heated by the heating tubes 45. The preheating can cause the uncoated film to undergo slight and uniform thermal expansion under controlled conditions, releasing some internal stress. By heating the coated film, the volatilization of the organic solvent or water in the coating liquid can be accelerated, so that the coating changes from liquid to solid.

[0055] S3, the micro hydraulic cylinder 92 is turned on to drive the coating blade 9 close to the top of the coating roller 1, and then the coating machine is started to make the film pass between the coating blade 9 and the coating roller 1, while the coating liquid is transported above the film, so that the coating blade 9 scrapes the coating liquid on the film;

[0056] S4. After the film coating is completed, the rotating motor 8 is turned on to drive the interlocking plate 41 to rotate around the rotating plates 5 on both sides, so that the heat dissipation fan 44 in the heat dissipation frame 42 faces the coating roller 1. After the heat dissipation fan 44 is turned on, the coating roller 1 can quickly dissipate heat.

[0057] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0058] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An online coating device for a high barrier film, comprising: a coating roller (1), and A coating scraper (9) is provided above the coating roller (1) for scraping the coating, and roller covers (2) are fixedly engaged on both sides of the coating roller (1), and a roller shaft (3) is fixedly mounted on each roller cover (2); It is characterized by further comprising: A heating and heat dissipation component (4), wherein two groups of the heating and heat dissipation components (4) are provided and mounted on two roller shafts (3), and the heating and heat dissipation components (4) include a mosaic plate (41), and a heat dissipation fan (44) for dissipating heat from the coating roller (1) and a heating pipe (45) for heating the coating roller (1) and the film are respectively provided on both sides of the mosaic plate (41); An adjusting component (7) is provided with two groups of adjusting components (7), and the roller surface of the coating roller (1) is regulated by adjusting the two groups of heating and heat dissipation components (4) to dissipate heat or heat through the adjusting components (7).

2. The online coating device for high barrier film according to claim 1, characterized in that: A heat dissipation frame (42) and a heating frame (43) are fixedly embedded on both sides of the embedding plate (41), a plurality of heat dissipation fans (44) are fixedly embedded in the heat dissipation frame (42), and a plurality of heating pipes (45) are fixedly embedded in the heating frame (43).

3. The online coating device for high barrier film according to claim 2, characterized in that: One side of the roller shaft (3) is provided with two rotatably connected rotating plates (5), one end of the rotating plate (5) is fixedly embedded with a collar (51), and the collar (51) is sleeved in an annular groove provided in the roller shaft (3) and rotatably connected to the annular groove, the rotating plate (5) is rotatably connected to the embedding plate (41) via a rotating shaft, and a guide rod (6) is fixedly embedded in the middle of the outer plate wall of the rotating plate (5); A rotating motor (8) is fixedly mounted on the rotating plate (5) via a frame, and an output end of the rotating motor (8) is fixedly connected to a rotating shaft on the rotating plate (5).

4. The online coating device for high barrier film according to claim 3, characterized in that: The adjusting component (7) comprises a U-shaped plate (71), a curved slide rail (73) is fixedly mounted on the bottom of the U-shaped plate (71), and a curved slide groove (73a) is provided in the curved slide rail (73); The guide rods (6) on the two rotating plates (51) on the same side are both inserted into the arcuate slide grooves (73a) provided on the arcuate slide rails (73) and are slidably connected to the arcuate slide grooves (73a).

5. The online coating device for high barrier film according to claim 4, characterized in that: The adjusting component (7) further comprises a driving component (74), the driving component (74) comprising a threaded rod (741), a threaded connection block (742), a push plate (743) and a driving motor (744), the threaded rod (741) being rotatably mounted on the U-shaped plate (71), and two threaded sections with opposite thread directions are provided on both sides of the threaded rod (741), each threaded section is sleeved with a threaded connection block (742) connected thereto, and a vertically arranged push plate (743) is fixedly mounted on the bottom of each threaded connection block (742), the inner side wall of the push plate (743) abuts against the guide rod (6), the driving motor (744) is fixedly mounted on the outer side wall of the U-shaped plate (71), and the output end of the driving motor (744) is fixedly connected to one end of the threaded rod (741).

6. The online coating device for high barrier film according to claim 5, characterized in that: An arc-shaped spring (75) is installed in the arc-shaped slide groove (73a) provided in the arc-shaped slide rail (73), and both ends of the arc-shaped spring (75) are fixedly connected to the inner rod walls of the two guide rods (6) respectively.

7. The online coating device for high barrier film according to claim 5, characterized in that: An L-shaped fixing plate (72) is fixedly installed on the top of the U-shaped plate (71), and a fixing hole is opened on the horizontal plate surface of the L-shaped fixing plate (72).

8. The online coating device for high barrier film according to claim 7, characterized in that: A mounting plate (91) is fixedly installed between the two U-shaped plates (71), and a plurality of equally spaced micro hydraulic cylinders (92) are installed at the bottom of the mounting plate (91). A knife holder (93) is fixedly installed at the output end of the micro hydraulic cylinder (92), and the coating scraper (9) is fixedly installed on the knife holder (93) by screws.

9. The method for online coating of a high barrier film according to any one of claims 5 to 8, characterized in that: The specific steps include: S1. The coating roller (1) is mounted on the coating machine using the roller shaft (3), and then the L-shaped fixing plate (72) is fixed to the inner wall of the coating machine using screws, so that the L-shaped fixing plate (72) constitutes a support frame for the heating and heat dissipation component (4), the rotating plate (5) and the adjustment component (7), and the coating roller (1) located at the lower part of the heating and heat dissipation component (4) serves as a conveying roller structure for the film; S2. Before coating, the rotating motor (8) is turned on to drive the interlocking plate (41) to rotate around the rotating plates (5) on both sides, so that the heating tube (45) in the heating frame (43) faces the coating roller (1), so that the coating roller (1) and the uncoated and coated films on both sides of the coating roller (1) are heated by the heating tube (45). The preheating can cause the uncoated film to undergo slight and uniform thermal expansion under controlled conditions, thereby releasing some internal stress. By heating the coated film, the volatilization of the solvent (organic solvent or water) in the coating liquid can be accelerated, so that the coating is transformed from a liquid state to a solid state. S3, the micro hydraulic cylinder (92) is turned on to drive the coating blade (9) close to the top of the coating roller (1), and then the coating machine is started to make the film pass between the coating blade (9) and the coating roller (1), while at the same time the coating liquid is transported above the film, so that the coating blade (9) scrapes the coating liquid on the film; S4. After the film coating is completed, the rotating motor (8) is turned on to drive the interlocking plate (41) to rotate around the rotating plates (5) on both sides, so that the heat dissipation fan (44) in the heat dissipation frame (42) faces the coating roller (1). After the heat dissipation fan (44) is turned on, the coating roller (1) can quickly dissipate heat.

10. The online coating device and method for high barrier film according to claim 9, characterized in that: In step S2, if it is necessary to strengthen the heating of the film around the coating roller (1), the driving motor (744) is turned on to drive the threaded rod (741) to rotate, so that the threaded connection blocks (742) on both sides of the threaded rod (741) drive the two push plates (743) to slide toward or away from each other. If the push plates (743) slide toward each other, the two guide rods (6) can be pushed to slide toward each other along the arc-shaped slide groove (73a). Therefore, the two rotating plates (5) on the roller shaft (3) rotate toward each other through the ring (51), so that the two sets of heating and heat dissipation components (4) are mutually engaged. The two rotating plates (5) on the roller shaft (3) rotate in opposite directions through the sleeve ring (51), so that the two groups of heating and heat dissipating components (4) are dispersed from each other, thereby achieving a range of heating or heat dissipation of the film around the coating roller (1).

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