Coating device

Abstract

The utility model discloses a coating device and belongs to the technical field of coating. The coating device comprises a coating machine and an edge scraping machine. The coating machine comprises a rack as well as a coating roller, an anastomosis roller and a guide roller which are arranged on the rack, the guide roller is positioned at the rear end of the anastomosis roller, and a gap is formed between the anastomosis roller and the coating roller, so that a membrane material penetrates through the gap to be subjected to slurry coating and then is wound on the guide roller; a first path for a membrane material to pass through is arranged between the anastomosis roller and the guide roller; the edge scraping machine comprises an edge scraping piece arranged on the rack, the material scraping end of the edge scraping piece is located on the first path and used for making contact with the edge of the membrane material on the first path, and a first included angle between the side, facing the matching roller, of the edge scraping piece and the first path is larger than 90 degrees so that slurry at the edge position of the membrane material on the first path can be scraped out. And the shaking probability of the membrane material in the edge scraping process is reduced.

Description

Technical Field

[0001] The present application relates to the field of coating technology, and in particular to a coating device. Background Art

[0002] Micro-gravure coating is a commonly used coating method, which is a type of gravure coating and belongs to roller coating.

[0003] However, the current micro-concave coating device, when performing coating production, will cause the coating thickness at the edge of the film to be thicker than other areas due to the limited wide edge pressing, or the uneven direction of the micro-concave coating roller or the film material and scraper pressure, resulting in a fat edge problem. When the film material with a fat edge problem is subsequently rolled up, it is easy to cause the edge of the roll to bulge and the roll to be uneven.

[0004] In order to improve the problem of fat edges in the micro-concave coating device, the traditional method is to trim the edge of the film before winding it up. This not only requires the addition of an online trimming device, but also causes waste of raw materials, such as substrates and coating liquid, greatly increasing production costs. Alternatively, the edge can be scraped by a scraper, but when the scraper is scraping the edge, it is easy to cause the film to shake, affecting the coating quality of the film. Utility Model Content

[0005] Based on the above-mentioned deficiencies, the present application provides a coating device to partially or completely improve the problems in the related art that the film material is prone to fat edges and the film material coating quality is low.

[0006] This application is implemented as follows:

[0007] The example of the present application provides a coating device, including a coating machine and a scraper. The coating machine includes a frame and a coating roller, a mating roller and a guide roller arranged on the frame, the guide roller is located at the rear end of the mating roller, and there is a gap between the mating roller and the coating roller, so that the film material passes through the gap for slurry coating and then is wound around the guide roller; there is a first path for the film material to pass between the mating roller and the guide roller; the scraper includes a scraper blade arranged on the frame, the scraping end of the scraper blade is located in the first path and is used to contact the edge of the film material on the first path, and the first angle between the scraper blade facing the mating roller and the first path is greater than 90°, so as to scrape out the slurry at the edge of the film material on the first path.

[0008] In the above implementation process, when the coating process of the film material is performed using the coating device provided in the example of the present application, the film material can pass through the gap between the matching roller and the coating roller, so that the slurry on the surface of the coating roller is coated on the film material. The coated film material passes through the gap between the matching roller and the coating roller to the guide roller, and moves around the guide roller to the rear end. The film material located between the matching roller and the guide roller moves along the first path. Since a scraping blade is provided on the frame of the coating machine, the scraping end of the scraping blade is located on the first path and contacts the edge of the film material moving along the first path, and the excess slurry at the edge of the film material can be scraped out during the movement of the film material to reduce the probability of fat edges at the edges of the film material.

[0009] Since the angle between the scraper blade and the first path facing the matching roller is greater than 90°, the scraper blade and the moving film material can form a scraping effect similar to that of a "shovel". The scraping end of the scraper blade will basically not produce a large resistance pressure on the film material, and will basically not cause the moving film material to shake after contact with the scraper blade, thereby improving the coating quality.

[0010] If the angle between the scraping end of the scraping blade and the film material is less than 90°, the scraping end of the scraping blade will contact the moving film material to form a scraping effect similar to "wiping". According to the scraping method of "wiping", the scraping blade needs to form a large pressure between the scraping blade and the film material to scrape out the slurry. The large pressure between the scraping blade and the moving film material will cause the film material to shake, affecting the coating quality of the film material.

[0011] In combination with the first aspect, in an optional embodiment, the scraper machine also includes a guide plate and a guide groove, and the guide groove is arranged on the frame; the end of the scraper plate away from the scraping end is connected to the guide plate, and the guide plate is vertically arranged in the guide groove, and the second angle between the side of the scraper plate facing the matching roller and the guide plate is greater than 90°, and the slurry on the guide plate can flow into the guide groove.

[0012] In the above implementation process, a guide groove is arranged on the frame, and a guide plate is vertically arranged in the guide groove, and the guide plate is connected to the scraping plate. Since the second angle between the scraping plate and the side of the scraping plate facing the matching roller is greater than 90°, the scraping plate is tilted upward, so the slurry scraped by the scraping plate can flow along the surface of the scraping plate to the guide plate, and then flow along the guide plate to the guide groove. The scraped slurry is guided through the guide groove to improve the neatness of the scraping device and prevent the scraped slurry from affecting the coating quality of the diaphragm.

[0013] In combination with the first aspect, in an optional embodiment, the guide roller is located above the mating roller, and the guide roller is movably connected to the frame in the vertical direction to adjust the angle between the first path and the vertical direction.

[0014] In the above implementation process, the guide roller is located above the rear end of the matching roller, and the guide roller is movably connected to the frame in the vertical direction. The position of the guide roller in the vertical direction can be adjusted as needed to adjust the direction of the first path to meet the adjustment of parameters such as the moving direction of the film material or the coating tension.

[0015] In combination with the first aspect, in an optional embodiment, the scraper is also provided with a connecting member, which includes two slide grooves vertically arranged in the guide groove, and the two sides of the guide plate are respectively slidably connected to the two slide grooves and fixed to the slide grooves to adjust the position of the scraper end in the vertical direction.

[0016] In the above implementation process, two vertical slide grooves are set in the guide groove, and the two sides of the guide plate are slidably connected to the two slide grooves and fixed at the target position. After the position of the guide roller in the vertical direction is adjusted, the position of the scraping end of the scraping plate can be adjusted accordingly, so that the scraping end can contact the membrane material of the first path to scrape out the slurry, thereby improving the applicability of the scraper.

[0017] In combination with the first aspect, in an optional embodiment, the scraper further includes a mounting plate, which is fixed to the frame, an extension direction of the mounting plate is consistent with the axial direction of the coating roller, and the guide groove is slidably connected to the mounting plate along the extension direction.

[0018] In the above implementation process, the guide groove is slidably connected to the mounting plate along the axial direction of the coating roller, and the position of the scraping end relative to the edge of the film material can be adjusted as needed to adjust the scraping edge width.

[0019] In combination with the first aspect, in an optional implementation, the guide groove is magnetically connected to the mounting plate via a magnetic block.

[0020] In the above implementation process, the guide groove is magnetically connected to the mounting plate through the magnetic block. When the scraping width needs to be adjusted, the magnetic block can be taken out, and then the guide groove is moved to move the scraping sheet along the width direction of the film material, and then the moved guide groove is fixed to the mounting plate by the magnetic block. Using the magnetic block to connect the guide groove and the mounting plate can improve the convenience of operation.

[0021] In combination with the first aspect, in an optional embodiment, the coating machine further includes a scraper frame and a scraper disposed on the scraper frame, the scraper frame is disposed on the frame, and the scraper is used to be close to the coating roller to limit the slurry thickness on the surface of the coating roller.

[0022] In the above implementation process, the scraper is supported by a scraper stand so that the scraper is close to the coating roller, and the excess slurry on the surface of the coating roller can be scraped off to coat the slurry with a preset thickness on the surface of the film material.

[0023] In combination with the first aspect, in an optional implementation, the mounting plate is fixedly connected to the scraper holder, and the mounting plate is provided with scales arranged along the axial direction of the coating roller.

[0024] In the above implementation process, the mounting plate is connected to the scraper frame, and a scale arranged along the axial direction of the coating roller is set on the mounting plate, and the moving position of the scraper blade can be adjusted according to the scale.

[0025] In combination with the first aspect, in an optional implementation, the discharge end of the guide groove extends out of the scraper frame in a direction away from the coating roller, and a liquid receiving bucket is arranged below the discharge end.

[0026] In the above implementation process, the discharge end of the guide groove extends out of the scraper frame away from the coating roller, and a liquid receiving bucket can be set below the discharge end extending out of the scraper frame to collect the slurry in the guide groove.

[0027] In an optional implementation, the guide plate is an elastic plate.

[0028] In the above implementation process, the guide plate is set as an elastic plate, which can form an elastic buffering effect when the scraping plate contacts the membrane material, and can adapt to the scraping requirements of membrane materials with different thicknesses and stiffnesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0030] Figure 1 A schematic diagram of the structure of the scraping device provided for the example of this application;

[0031] Figure 2 A schematic diagram of the structure of the edge scraping machine provided for the example of this application;

[0032] Figure 3 A schematic diagram of a scraping device for scraping provided as an example of this application;

[0033] Figure 4 for Figure 3 The enlarged schematic diagram of the middle A part;

[0034] Figure 5 A schematic diagram of scraping edge for comparison technology is provided for this application;

[0035] Figure 6 Schematic diagram of position adjustment of guide rollers and scraper blades provided for the example of this application.

[0036] Icons: 100-film material; 1-coating device; 10-coating machine; 11-coating roller; 12-matching roller; 13-guide roller; 14-scraper frame; 15-scraper; 20-scraper; 21-scraper; 211-scraper end; 22-guide plate; 23-guide trough; 231-discharge end; 24-connector; 241-slide; 25-mounting plate; 251-scale; 26-magnetic block; 27-liquid receiving barrel; α1-first angle; α2-second angle; D1-vertical direction; D2-axial direction. DETAILED DESCRIPTION

[0037] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions.

[0039] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0040] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] In order to improve the problem of fat edges easily produced by the micro-concave coating device, one method is to trim the edges of the film 100 before winding it up. This not only requires the addition of an online trimming device, but also causes waste of raw materials, such as substrate and coating liquid, greatly increasing production costs.

[0042] Another method is to use a scraper to scrape the edge of the film material 100. However, the scraper can easily cause the film material 100 to shake during the scraping process, which affects the coating quality of the film material 100.

[0043] Therefore, the present application further improves the coating device 1, so as to improve the problem of fat edges and coating quality to a certain extent. In order to make the purpose, technical solution and advantages of the embodiment of the present application clearer, the technical solution in the embodiment of the present application will be clearly and completely described below in conjunction with the drawings in the embodiment of the present application.

[0044] See also Figure 1 The coating device 1 provided in the example of the present application includes a coating machine 10 and a scraper 20 .

[0045] Please continue to read Figure 1 The coating machine 10 includes a frame (not shown in the figure) and a coating roller 11, a mating roller 12 and a guide roller 13 arranged on the frame. The guide roller 13 is located at the rear end of the mating roller 12. There is a gap between the mating roller 12 and the coating roller 11, so that the film material 100 passes through the gap for slurry coating and then is wound around the guide roller 13; there is a first path between the mating roller 12 and the guide roller 13 for the film material 100 to pass through.

[0046] Please combine Figure 1 , Figure 2 , Figure 3 and Figure 4 The scraper 20 includes a scraper blade 21 arranged on a frame, a scraping end 211 of the scraper blade 21 is located in the first path and is used to contact the edge of the film material 100 of the first path, and a first angle α1 between the scraper blade 21 and the first path facing the matching roller 12 is greater than 90°, so as to scrape out the slurry at the edge of the film material 100 of the first path.

[0047] When using the coating device 1 provided in the example of this application to coat the film material, please continue to refer to Figure 3 , the film material 100 can pass through the gap between the matching roller 12 and the coating roller 11, so that the slurry on the surface of the coating roller 11 is coated on the film material 100. After passing through the gap between the matching roller 12 and the coating roller 11, the coated film material 100 moves along the first path to the guide roller 13, and moves around the guide roller 13 to the rear end.

[0048] In the meantime, please continue to read Figure 3 The scraping end 211 of the scraping blade 21 is located in the first path and contacts the edge of the film material 100 moving along the first path. During the movement of the film material 100, the excess slurry on the edge of the film material 100 can be scraped off to reduce the probability of fat edges on the edge of the film material 100.

[0049] Please continue to combine Figure 3 and Figure 4Since the first angle α1 between the side of the scraping blade 21 facing the matching roller 12 and the film material 100 at the first path is greater than 90°, the scraping blade 21 and the moving film material 100 can form a scraping effect similar to "shoveling". Scraping is performed in a manner similar to "shoveling", and the scraping end 211 of the scraping blade 21 moves in the opposite direction to the slurry at the film material 100. The scraping end 211 of the scraping blade 21 does not need to generate a large pressure against the film material 100 to scrape out the slurry, and the moving film material 100 will basically not shake after the scraping blade 21 contacts it, which can improve the coating quality.

[0050] See also Figure 5 If the first angle α1 between the scraping end 211 of the scraping blade 21 and the film material 100 is less than 90°, as shown in the figure, the first angle α1 is 62°, the scraping end 211 of the scraping blade 21 will contact the moving film material 100 to form a scraping effect similar to "wiping". When scraping according to the "wiping" scraping method, the scraping blade 21 needs to press down the film material 100 and form a large pressure between the scraping blade 21 and the film material 100 to scrape out the slurry. The large pressure between the scraping blade 21 and the moving film material 100 will cause the film material 100 to shake when moving, affecting the coating quality of the film material 100.

[0051] The coating machine 10 and the edge scraper 20 in the coating device 1 provided by the example of the present application are further described in detail below in conjunction with the accompanying drawings.

[0052] The coating roller 11, the mating roller 12 and the guide roller 13 in the coating machine 10 are all installed on the frame. Through the support and fixation of the frame, a stable gap can be formed between the coating roller 11 and the mating roller 12, so that when the film material 100 passes through the gap, the slurry on the surface of the coating roller 11 can be coated on the film material 100. In addition, through the support and fixation of the frame, the guide roller 13 can be stably located at the rear end of the mating roller 12 to guide the film material 100 passing through the gap and transport the film material 100 to the rear end.

[0053] The present application does not limit the specific structure of the frame. In some possible embodiments, the frame is provided with a plurality of spaced-apart brackets, and the coating roller 11, the mating roller 12 and the guide roller 13 are rotatably connected to the corresponding brackets respectively.

[0054] Further, in order to improve the coating quality, in a possible embodiment, please continue to refer to Figure 1 and Figure 3The coating machine 10 includes two anastomosis rollers 12. The two anastomosis rollers 12 are arranged at intervals in the horizontal direction, and the coating roller 11 is located below the two anastomosis rollers 12, so that the film material 100 enters from the gap between one anastomosis roller 12 and the coating roller 11, slides on the surface of the coating roller 11, and then passes from the gap between the other anastomosis roller 12 and the coating roller 11, moves along the first path to the guide roller 13, and then continues to move to the rear end around the guide roller 13.

[0055] Further, in order to facilitate the adjustment of the slurry coating thickness, in a possible embodiment, please continue to refer to Figure 1 and Figure 3 The coating machine 10 may also be provided with a scraper frame 14 and a scraper 15, wherein the scraper frame 14 is provided on the frame. The scraper 15 is provided on the scraper frame 14, and the scraper 15 is used to approach the coating roller 11 and scrape off the excess slurry on the surface of the coating roller 11 to limit the slurry thickness on the surface of the coating roller 11.

[0056] Exemplarily, the coating roller 11 is a concave coating roller.

[0057] The present application does not limit the specific structure of the scraper frame 14. In a possible embodiment, the scraper frame 14 may include a support plate and a pressure plate, one end of the scraper 15 is clamped between the support plate and the pressure plate, and the other end of the scraper 15 extends out of the support plate. The extension direction of the support plate and the pressure plate is consistent with the axial direction D2 of the coating roller 11, so that the scraper 15 is arranged along the axial direction of the coating roller 11, and the excess slurry on the circumferential surface of the coating roller 11 is scraped off during the rotation of the coating roller 11.

[0058] Furthermore, the length of the other end of the scraper 15 extending out of the support plate is adjustable.

[0059] Furthermore, the guide roller 13 may be arranged above the rear end of the anastomosis roller 12. The first path is the outer common tangent line of the anastomosis roller 12 and the guide roller 13. The first path extends obliquely upward.

[0060] Furthermore, in order to meet the coating requirements of different film materials 100 , in a possible embodiment, the guide roller 13 is movably connected to the frame in the vertical direction.

[0061] Furthermore, the present application does not limit how to make the guide roller 13 movably connected to the frame in the vertical direction D1. In a possible embodiment, a cylinder can be set on the frame to connect the guide roller 13 to the output end of the cylinder. The position of the guide roller 13 in the vertical direction D1 can be adjusted by telescoping the cylinder along the vertical direction D1.

[0062] The scraping blade 21 in the scraper 20 is used to contact the edge of the film material 100 at the first path, and the first angle α1 between the scraping blade 21 and the film material 100 at the first path facing the mating roller 12 is greater than 90°, so as to scrape out the slurry at the edge of the film material and reduce the thickness of the coating on the edge of the film material 100.

[0063] Further, in order to reduce the impact of the slurry scraped by the scraping blade 21 on the film material 100 and prevent the slurry from dripping to other positions of the coating device 1, in a possible embodiment, please refer to Figure 1-Figure 4 The scraper 20 further includes a guide plate 22 and a guide groove 23. The end of the scraper plate 21 away from the scraping end 211 is connected to the guide plate 22, and the second angle α2 between the side of the scraper plate 21 facing the anastomosis roller 12 and the guide plate 22 is greater than 90°. The guide plate 22 is vertically arranged in the guide groove 23, and the guide groove 23 is arranged on the frame.

[0064] Please continue to combine Figure 3 and Figure 4 The scraper blade 21 contacts the edge of the membrane material 100 at the first path, and can scrape out the slurry at the edge of the membrane material 100. The second angle α2 between the side of the scraper blade 21 facing the anastomosing roller 12 and the guide blade 22 is greater than 90°, and the scraper blade 21 is inclined, so the slurry scraped out by the scraper blade 21 can flow along the inclined surface of the scraper blade 21 to the guide blade 22, and then flow downward along the vertically arranged guide blade 22 to the guide groove 23, and then the guide groove 23 guides the slurry.

[0065] Furthermore, in order to meet the scraping requirements of the film material 100 with different thicknesses and stiffnesses, in a possible embodiment, the guide plate 22 can be configured as an elastic plate.

[0066] The guide piece 22 is set as an elastic piece, which can form a certain buffering effect when the scraping piece 21 scrapes the film material 100, reduce the probability of the scraping piece 21 scraping the film material 100, and improve the scraping quality.

[0067] Exemplarily, the guide plate 22 may be configured as a silicone sheet.

[0068] During the coating process, please refer to Figure 6 It is usually necessary to adjust the position of the guide roller 13 in the vertical direction D1 according to process requirements, adjust the angle of the first path, and then adjust the angle of the first film material 100.

[0069] Please continue reading Figure 6After the guide roller 13 is moved upward by a certain distance from the bottom, the scraper blade 21 at the original position cannot contact the film material 100 to scrape the slurry from the edge of the film material 100. Therefore, it is necessary to move the scraper blade 21 upward by a certain distance so that the scraper blade 21 can contact the edge of the film material 100 located at the first path after adjustment to scrape the slurry. Figure 6 In FIG. 1 , the dotted lines represent the guide roller 13, the film material 100 and the edge scraper 21 before adjustment. The arrow on the film material 100 represents the moving direction of the film material 100.

[0070] Further, in order to make the scraper end 211 of the scraper blade 21 adapt to the position of the film material 100 after the guide roller 13 is adjusted, so that the scraper end 211 can contact the edge of the film material 100 to scrape out the slurry after the guide roller 13 is adjusted, in a possible embodiment, please continue to refer to Figure 6 and Figure 2 The edge scraper 20 is also provided with a connecting member 24. The guide plate 22 and the connecting member 24 are slidably connected and fixed at a target position in the vertical direction D1 to adjust the position of the edge scraper 21 in the vertical direction D1 so that the edge scraper 21 is close to the edge of the film material 100 at the first path.

[0071] Further, the present application does not limit how the guide plate 22 is slidably connected to the connecting member 24 in the vertical direction D1 and fixed at the target position. In a possible embodiment, please continue to refer to Figure 2 The connecting member 24 includes two slide grooves 241 vertically arranged in the guide groove 23. Both sides of the guide plate 22 are slidably connected to the two slide grooves 241 and fixed to the slide grooves 241 to adjust the position of the scraper end 211 in the vertical direction D1.

[0072] Furthermore, after both sides of the guide plate 22 extend into the slide groove 241 and slide to the target position, the guide plate 22 is pressed against the groove wall of the slide groove 241 by screws to fix the guide plate 22 at the target position.

[0073] Further, in order to facilitate the collection of the slurry in the guide groove 23, in a possible embodiment, please continue to combine Figure 1 and Figure 2 The discharge end 231 of the guide groove 23 extends in a direction away from the coating roller 11, and a liquid receiving bucket 27 is provided below the discharge end 231. A second gap exists between the end of the guide plate 22 away from the scraper plate 21 and the bottom wall of the guide groove 23, so that the slurry flowing from the surface of the guide plate 22 toward the coating roller 11 to the guide groove 23 can flow to the discharge end 231 through the second gap.

[0074] Further, in a possible embodiment, please continue to combine Figure 1 and Figure 2The scraper 20 further includes a mounting plate 25 , which is fixed to the frame. The extending direction of the mounting plate 25 is consistent with the axial direction of the coating roller 11 , and the guide groove 23 is slidably connected to the mounting plate 25 .

[0075] Furthermore, the present application does not limit how the guide groove 23 can be slidably connected to the mounting plate 25 . In a possible embodiment, the guide groove 23 is magnetically connected to the mounting plate 25 via a magnetic block 26 .

[0076] Furthermore, the mounting plate 25 can be fixed to the scraper frame 14 , and the guide groove 23 can slide along the axial direction D2 and be fixed to the target position after sliding by the magnetic block 26 .

[0077] Furthermore, a scale 251 arranged along the axial direction D2 may be provided on the mounting plate 25 , so that the moving distance can be determined according to the scale 251 .

[0078] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A coating device, characterized in that: include: A coating machine, the coating machine comprising a frame and a coating roller, a mating roller and a guide roller arranged on the frame, the guide roller being located at the rear end of the mating roller, a gap being provided between the mating roller and the coating roller, so that the film material passes through the gap for slurry coating and then is wound around the guide roller; a first path for the film material to pass through is provided between the mating roller and the guide roller; A scraper, the scraper comprising a scraper blade arranged on the frame, the scraping end of the scraper blade being located on the first path and being used to contact the edge of the film material on the first path, and the first angle between the side of the scraper blade facing the matching roller and the first path is greater than 90°, so as to scrape out the slurry at the edge of the film material on the first path.

2. The coating device according to claim 1, characterized in that: The scraper also includes a guide plate and a guide groove, wherein the guide groove is arranged on the frame; the end of the scraper away from the scraping end is connected to the guide plate, and the guide plate is vertically arranged in the guide groove. The second angle between the side of the scraper facing the matching roller and the guide plate is greater than 90°, and the slurry on the guide plate can flow into the guide groove.

3. The coating device according to claim 2, characterized in that: The guide roller is located above the anastomosis roller, and the guide roller is movably connected to the frame in the vertical direction to adjust the angle between the first path and the vertical direction.

4. The coating device according to claim 3, characterized in that: The scraper is also provided with a connecting piece, which includes two slide grooves vertically arranged in the guide groove. The two sides of the guide plate are respectively slidably connected to the two slide grooves and fixed to the slide grooves to adjust the position of the scraper end in the vertical direction.

5. The coating device according to claim 2, characterized in that: The scraper also includes a mounting plate, which is fixed to the frame. The extension direction of the mounting plate is consistent with the axial direction of the coating roller, and the guide groove is slidably connected to the mounting plate along the extension direction.

6. The coating device according to claim 5, characterized in that: The guide groove is magnetically connected to the mounting plate through a magnetic block.

7. The coating device according to claim 5, characterized in that: The coating machine further comprises a scraper frame and a scraper arranged on the scraper frame, wherein the scraper frame is arranged on the frame, and the scraper is used to be close to the coating roller to limit the slurry thickness on the surface of the coating roller.

8. The coating device according to claim 7, characterized in that: The mounting plate is fixedly connected to the scraper frame, and the mounting plate is provided with scales arranged along the axial direction of the coating roller.

9. The coating device according to claim 7, characterized in that: The discharge end of the guide groove extends out of the scraper frame in a direction away from the coating roller, and a liquid receiving bucket is arranged below the discharge end.

10. The coating device according to any one of claims 2 to 9, characterized in that: The guide piece is an elastic piece.

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