A single-sided glue spraying device for PE film and its use method

Abstract

The invention discloses a single-sided glue spraying device for PE film, comprising a device base, a tensioning roller is installed on the left side of the device base, the tensioning roller is installed above the device base through a tensioning bracket, the tensioning bracket comprises a tensioning screw, the tensioning screw is installed on one side of the tensioning bracket, a roller seat is installed on the upper end of the tensioning screw, the tensioning roller is installed on the upper end of the roller seat, the roller seat is slidably connected with the tensioning bracket, a leveling device is installed on the right side of the tensioning roller, a spraying device is installed on the right side of the leveling roller, a brushing device is installed on the right side of the spraying device, the brushing device comprises a brushing roller, a smearing device is installed on the right side of the brushing roller, the smearing device comprises a lower coating support plate and an upper coating, which reduces the waste of glue and makes the smearing more uniform, can recycle part of the glue on the PE film, and control the thickness of the glue on the PE film, saves costs and increases the adhesion of the glue.

Description

Technical Field

[0001] The invention relates to the technical field of PE film manufacturing, and in particular to a single-sided glue spraying device for PE film and a use method thereof. Background Art

[0002] The PE film is placed under the surface paper in the product structure, mainly to provide decorative patterns and cover to prevent the bottom glue from seeping out. This layer requires the paper to have good hiding power, impregnation and printing performance. The PE film requires a smooth surface, good absorbency and adaptability, uniform color for the base color, and bright color for the color. In the production process of the PE film, it is necessary to set the glue on one side of the PE film so that it is more convenient to paste when used. However, there are still few devices for single-sided glue coating at this stage, which cannot meet the current use needs. Some devices use a brush tube for brushing, which will cause uneven brushing, and the brushing glue is difficult to collect, which is wasteful. The brushing glue will solidify over a long period of time. At the same time, the glue adhesion of the PE film will not be strong during the brushing process, resulting in edge or bagging in the later stage, which affects the later appearance. A device that can increase the adhesion of the brushing glue and recycle the glue should be designed. Summary of the invention

[0003] A technical task of the present invention is to solve the deficiencies of the prior art and to provide a single-sided glue spraying device for PE film and a method of using the same.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a single-sided glue spraying device for PE film, comprising a device base, a tensioning roller is installed on the left side of the device base, the tensioning roller is installed above the device base through a tensioning bracket, the tensioning bracket comprises a tensioning screw, the tensioning screw is installed on one side of the tensioning bracket, a roller seat is installed on the upper end of the tensioning screw, the tensioning roller is installed on the upper end of the roller seat, the roller seat is slidably connected with the tensioning bracket, a leveling device is installed on the right side of the tensioning roller, the leveling device comprises a first roller and a second roller, the first roller is installed on the upper end of the leveling bracket, the second roller is installed on the leveling bracket below the first roller, and the leveling device is installed on the device base through the leveling bracket;

[0005] The coating device is installed on the right side of the leveling device, and the coating device includes a coating pipe, a plurality of coating valves are installed at the lower end of the coating pipe, a coating nozzle is installed on the coating valve, and a coating brush device is installed on the right side of the coating device, and the coating brush device includes a coating brush roller, and the coating brush roller is installed on the base of the device through a coating brush bracket, and the upper roller surface of the coating brush roller is provided with coating micropores, and the coating brush roller is driven to rotate by a motor. A roller plate is installed in the roller drum of the coating brush roller, and the roller plate is fixedly installed inside the roller, and the roller plate is installed on the roller shaft of the roller, and a coating brush plate is installed at the lower end of the coating brush roller, and a guide roller is installed on the right side of the coating brush plate, and a coating device is installed on the right side of the coating brush roller, and the coating device includes a lower coating support plate and an upper coating suction block, and the lower coating support plate is installed obliquely on the right side of the device base, and the upper coating suction block is installed at a symmetrical position on the upper end of the lower coating support plate;

[0006] By installing a tensioning roller above the base of the device, the PE film can be tensioned to a certain extent, which can make the subsequent spraying and brushing more uniform, so that the coating glue can better adhere to the PE film. At the same time, the coating tube of the coating device at the rear end sprays the coating glue through the spray nozzle. A spray tank is installed on the upper end of the coating tube, and the spray tank is connected to a compressed air pipe. In this way, the compressed air pipe is used to spray the coating glue onto the PE film, and the spraying is more uniform. When spraying, compressed air is used, the spraying force is large, the adhesion effect will be better, and the spraying of the spray nozzle is uniform. Evenly spray the paper so as not to damage it. After spraying, the subsequent brushing operation can increase the thickness of the glue. At the same time, by placing the brushing glue in the roller during the brushing process, the brushing glue can be rotated and rolled continuously to prevent the glue from solidifying. At the same time, a roller plate is arranged in the roller to prevent the glue from rolling over a large range. At the same time, the roller plate has a scraping effect on the roller to reduce the flow of glue everywhere and the waste of glue. At the same time, the coating device can recycle part of the glue on the PE film and control the thickness of the glue on the PE film, saving costs without reducing the adhesion of the glue.

[0007] Preferably, the first roller is fixedly mounted on the leveling bracket, the second roller is slidably mounted on the leveling bracket, the second roller is mounted on the sliding block at the lower end through the second roller shafts on both sides, a leveling screw is mounted on the lower end of the sliding block, the leveling screw is mounted on one side of the leveling bracket, and a rotating handle is mounted on the lower end of the leveling screw; when leveling, the PE film can be adjusted up and down by adjusting the second roller up and down, and the later spraying and brushing of the PE film can be completed by adjustment, and the spraying distance is indirectly adjusted, so that the spraying effect can be controlled, and better spraying can be completed by price adjustment.

[0008] Preferably, glue baffles are installed on both sides of the brush roller, and the glue baffles are fixedly installed on the base of the device, and the glue baffles are installed vertically to the brush plates; the baffles are used to prevent the coating glue from spilling during brushing, and to completely fix the coating glue to the front end of the brush roller to prevent spilling.

[0009] Preferably, the length of the roller plate is equal to the length of the roller, the width of the roller plate is smaller than the diameter of the roller, and a sealing rubber strip is installed on the edge circumference of the roller plate, and the sealing rubber strip can seal the contact between the roller plate and the roller; the roller plate is arranged inside the roller, and in order to ensure that the coating glue is always on the bottom side, the roller plate is used to fix the coating within a certain range, while reducing the dripping of the coating and ensuring the coating process. The addition of the sealing strip enables the roller plate to scrape the inner surface of the roller to reduce the waste of the coating glue.

[0010] Preferably, the coating suction block is a sponge suction block, which is installed on the base of the device through an coating bracket, a negative pressure box is installed on the upper end of one side of the coating suction block, the coating suction block is installed at the port of the negative pressure box, a glue collecting tank is installed on one side of the negative pressure box, a glue collecting box is installed at the lower end of the glue collecting tank, and a negative pressure fan is installed at the upper end of the negative pressure box; the coating suction block is a sponge suction block that can adsorb excess coating glue on the PE film, and after adsorption, the coating glue in the sponge suction block is extracted through the negative pressure box, and then the coating glue flows into the glue collecting tank, and then flows into the glue collecting box through the glue collecting tank to complete the collection, and at the same time, the temperature in the negative pressure box is controlled at 50-60°C, which ensures that the glue will not solidify.

[0011] A method for using a single-sided glue spraying device for a PE film, comprising the following steps:

[0012] S1: After the PE film enters the tensioning roller, the roller seat is adjusted by the tensioning screw. After adjusting the appropriate tensioning force, the PE film enters the leveling roller and is adjusted by the second roller of the leveling roller. During the adjustment process, the second roller is adjusted by adjusting the sliding block by the leveling screw, so that it can be at the same horizontal position as the bottom surface of the brush roller, so that the device paper just passes through the lower surface of the brush roller. Before the PE film enters the brush roller, it is sprayed in advance, and the PE film is pre-sprayed by the spray nozzle of the spraying device. The spray nozzle is used for spraying, so the glue used for spraying is lower in concentration than the brush glue, which is convenient for spraying with the spray nozzle, and can make the PE film adhere better in the subsequent brushing process. After the spraying is completed;

[0013] S2: The coating enters the PE film through the coating plate. During the coating process, the coating glue is installed on the lower side of the roller plate in the coating roller, and the coating of the PE film is completed through the coating micropores on the surface of the roller. During the coating process, the coating roller rotates and brushes, and the roller plate is tilted and fixedly installed in the roller, and does not rotate with the rotation of the roller, so that the coating glue is prevented from rolling to the upper end of the roller, and the coating glue in the roller can be scraped off, so that the coating glue is always at the lower end of the roller, which speeds up the coating process. After the coating is completed;

[0014] S3: The coating is evenly applied through the upper coating suction block on the coating device on the right side of the coating roller, and the excess coating glue is collected. The upper coating suction block is used to collect the coating glue during the collection process, and the lower coating support block is used for support. The upper coating suction block is a sponge suction block, which can absorb the coating glue and allow the coating glue to enter the upper coating suction block. The coating glue in the upper coating suction block is extracted through the negative pressure box and enters the glue collection tank. The glue is collected through the glue collection tank and enters the glue collection box to complete the glue collection. At the same time, the temperature in the negative pressure box is 50-60°C to prevent the coating glue from solidifying during collection.

[0015] Technical effects of the present invention:

[0016] 1. Compared with the prior art, the present invention places the coating glue in the roller during the coating process, so that the coating glue can be rotated and rolled continuously to prevent the glue from solidifying. At the same time, a roller plate is arranged in the roller to prevent the glue from rolling over a large range. At the same time, the roller plate has a scraping effect on the roller, which reduces the glue from flowing everywhere and reduces the waste of glue. At the same time, the coating device can recycle part of the glue on the PE film and control the thickness of the glue on the PE film, saving costs while not reducing the adhesion of the glue.

[0017] 2. During leveling, the PE film can be adjusted up and down by adjusting the second roller up and down. The later spraying and brushing of the PE film can be completed by adjustment, and the spraying distance can be indirectly adjusted. This can control the spraying effect and achieve better spraying through price adjustment.

[0018] 3. To ensure that the applied glue is always on the bottom side, use a roller to fix the brush within a certain range, while reducing the dripping of the brush. To ensure the brushing process, add a sealing strip to allow the roller to scrape the inner surface of the roller to reduce the waste of applied glue.

[0019] 4. The upper coating suction block is a sponge suction block that can absorb the excess coating glue on the PE film. After adsorption, the coating glue in the sponge suction block is extracted through the negative pressure box, and then the coating glue flows into the glue collection tank, and then flows into the glue collection box through the glue collection tank to complete the collection. At the same time, the temperature in the negative pressure box is controlled at 50-60℃, which ensures that the glue will not solidify. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the PE film gluing device of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the brush roller of the glue spraying device of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the coating device of the glue spraying device of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the second roller of the glue spraying device of the present invention.

[0024] In the figure: 1. device base, 2. tensioning roller, 3. tensioning bracket, 4. tensioning screw, 5. roller seat, 6. leveling device, 7. first roller, 8. second roller, 9. leveling bracket, 10. spraying device, 11. spraying pipe, 12. spraying valve, 13. spraying nozzle, 14. brushing device, 15. brushing roller, 16. brushing bracket, 17. brushing micropores, 18. motor, 19. roller, 20. roller plate, 21. roller shaft, 22. brushing plate, 23. guide roller, 24. coating device, 25. lower coating support plate, 26. upper coating suction block, 27. second roller shaft, 28. sliding block, 29. leveling screw, 30. rotating handle, 31. glue baffle plate, 32. upper coating bracket, 33. negative pressure box, 34. glue collecting tank, 35. glue collecting box. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] Example

[0027] like Figure 1 As shown, a single-sided glue spraying device for PE film includes a device base 1, a tensioning roller 2 is installed on the left side of the device base 1, and the tensioning roller 2 is installed above the device base 1 through a tensioning bracket 3. The tensioning bracket 3 includes a tensioning screw 4, and the tensioning screw 4 is installed on one side of the tensioning bracket 3. A roller seat 5 is installed on the upper end of the tensioning screw 4, and the tensioning roller 2 is installed on the upper end of the roller seat 5. The roller seat 5 is slidably connected with the tensioning bracket 3. A leveling device 6 is installed on the right side of the tensioning roller 2, and the leveling device 6 includes a first roller 7 and a second roller 8. The first roller 7 is installed on the upper end of the leveling bracket 9, and the second roller 8 is installed on the leveling bracket 9 below the first roller 7. The leveling device 6 is installed on the device base 1 through the leveling bracket 9;

[0028] A spraying device 10 is installed on the right side of the leveling device 6, and the spraying device 10 includes a spraying pipe 11, and a plurality of spraying valves 12 are installed at the lower end of the spraying pipe 11, and a spraying nozzle 13 is installed on the spraying valve 12. A brushing device 14 is installed on the right side of the spraying device 10, and the brushing device 14 includes a brush roller 15, and the brush roller 15 is installed on the device base 1 through a brush bracket 16. The roller surface of the brush roller 15 is provided with brushing micropores 17, and the brush roller 15 is driven to rotate by a motor 18. The roller of the brush roller 15 A roller plate 20 is installed in the cylinder 19, and the roller plate 20 is fixedly installed inside the roller 19 at an angle, and the roller plate 20 is installed on the roller shaft 21 of the roller 19. A brush plate 22 is installed at the lower end of the brush roller 15, and a guide roller 23 is installed on the right side of the brush plate 22. A coating device 24 is installed on the right side of the brush roller 15, and the coating device 24 includes a lower coating support plate 25 and an upper coating suction block 26. The lower coating support plate 25 is installed at an angle on the right side of the device base 1, and the upper coating suction block 26 is installed at a symmetrical position on the upper end of the lower coating support plate 25;

[0029] By installing a tensioning roller 2 above the device base 1, the PE film can be tensioned to a certain extent, which can make the subsequent spraying and brushing more uniform, so that the coating glue can better adhere to the PE film. At the same time, the coating tube of the coating device 14 at the rear end sprays the coating glue through the spray nozzle 13. A spray tank is installed on the upper end of the coating tube 11, and the spray tank is connected to a compressed air pipe. In this way, the compressed air pipe is used to spray the coating glue onto the PE film, and the spraying is more uniform. When spraying, compressed air is used, the spraying force is large, the adhesion effect will be better, and the spraying of the spray nozzle is uniform. , so as not to damage the paper. After spraying, the subsequent brushing operation can be carried out to increase the thickness of the glue. At the same time, by placing the brushing glue in the roller during the brushing process, the brushing glue can be rotated and rolled continuously to prevent the glue from solidifying. At the same time, a roller plate 20 is arranged in the roller 19 to prevent the glue from rolling over a large range. At the same time, the roller plate 20 has a scraping effect on the roller 19, which reduces the flow of glue everywhere and reduces the waste of glue. At the same time, the coating device 24 can recycle part of the glue on the PE film and control the thickness of the glue on the PE film, saving costs while not reducing the adhesion of the glue.

[0030] Among them, the first roller 7 is fixedly installed on the leveling bracket 9, the second roller 8 is slidably installed on the leveling bracket 9, the second roller 8 is installed on the sliding block 28 at the lower end through the second roller shafts 27 on both sides, and a leveling screw 29 is installed at the lower end of the sliding block 28. The leveling screw 29 is installed on one side of the leveling bracket 9, and a rotating handle 30 is installed at the lower end of the leveling screw 29; when leveling, the PE film can be adjusted up and down by adjusting the second roller 8 up and down, and the later spraying and brushing of the PE film can be completed by adjustment, and the spraying distance is indirectly adjusted, so that the spraying effect can be controlled, and better spraying can be completed by price adjustment.

[0031] Glue baffles 31 are installed on both sides of the coating roller 15, and the glue baffles 31 are fixedly installed on the device base 1, and the glue baffles 31 are installed vertically to the coating plate 15; the glue baffles 31 are used to prevent the coating glue from spilling during brushing, and to completely fix the coating glue to the front end of the coating roller 15 to prevent it from spilling.

[0032] The length of the roller plate 20 is equal to the length of the roller 19, the width of the roller plate 20 is smaller than the diameter of the roller 19, and a sealing rubber strip is installed on the edge circumference of the roller plate 20, and the sealing rubber strip can seal the contact between the roller plate 20 and the roller 19; the roller plate 20 is arranged inside the roller 19, and in order to ensure that the coating glue is always on the bottom side, the roller plate 20 is used to fix the coating within a certain range, while reducing the dripping of the coating and ensuring the coating process. The addition of the sealing strip allows the roller plate 20 to scrape the inner surface of the roller 19 to reduce the waste of the coating glue.

[0033] The coating suction block 26 is a sponge suction block, which is installed on the device base 1 through an coating bracket 32. A negative pressure box 33 is installed on the upper end of one side of the coating suction block 26, and the coating suction block 26 is installed at the port of the negative pressure box 33. A glue collecting tank 34 is installed on one side of the negative pressure box 33, and a glue collecting box 35 is installed at the lower end of the glue collecting tank 34. A negative pressure fan 36 is installed on the upper end of the negative pressure box 33; the coating suction block 26 is a sponge suction block that can absorb excess coating glue on the PE film, and after adsorption, the coating glue in the sponge suction block is extracted through the negative pressure box 33, and then the coating glue flows into the glue collecting tank 34, and then flows into the glue collecting tank 35 through the glue collecting tank 34 to complete the collection. At the same time, the temperature in the negative pressure box 33 is controlled at 50-60°C, which ensures that the glue will not solidify.

[0034] A method for using a single-sided glue spraying device for a PE film, comprising the following steps:

[0035] S1: After the PE film enters the tensioning roller 2, the roller seat 5 is adjusted by the tensioning screw 4. After the appropriate tensioning force is adjusted, the PE film enters the leveling device 6 and is adjusted by the second roller 8 of the leveling device 6. During the adjustment process, the sliding block 28 is adjusted by the leveling screw 29 to complete the adjustment of the second roller 8, so that it can be at the same horizontal position as the bottom surface of the brush roller 15, so that the device paper just passes through the lower surface of the brush roller 15, and the PE film is sprayed in advance before entering the brush roller 15, and the PE film is pre-sprayed by the spray nozzle 13 of the spray device 14. The spray nozzle 13 is used for spraying, so the glue used by the spray nozzle 13 is lower in concentration than the brush glue, which is convenient for spraying with the spray nozzle 13, and can make the PE film better adhere in the subsequent brushing process. After the spraying is completed;

[0036] S2: The coating enters the PE film through the coating plate 22. During the coating process, the coating glue is installed on the lower side of the roller plate 20 in the coating roller 15, and the coating of the PE film is completed through the coating micropores 17 on the surface of the roller 19. During the coating process, the coating roller 18 rotates to brush, and the roller plate 20 is tilted and fixedly installed in the roller 19, and does not rotate with the rotation of the roller 19, so as to prevent the coating glue from rolling to the upper end of the roller 19, and can scrape the coating glue in the roller 19, so that the coating glue is always at the lower end of the roller 19, which speeds up the coating process. After the coating is completed;

[0037] S3: The coating is evenly applied through the upper coating suction block 26 on the coating device 24 on the right side of the coating roller 15, and the excess coating glue is collected. During the collection process, it is collected through the upper coating suction block 26, and supported by the lower coating support block 25. The upper coating suction block 26 is a sponge suction block that can absorb the coating glue, so that the coating glue enters the upper coating suction block 26, and the coating glue in the upper coating suction block 26 is extracted through the negative pressure box 33 and enters the glue collection tank 34. The glue is collected through the glue collection tank 34 and enters the glue collection box 35 to complete the glue collection. At the same time, the temperature in the negative pressure box is 50-60°C to prevent the coating glue from solidifying during collection.

[0038] Compared with the prior art, the method for using the single-sided glue spraying device for PE film of the present invention reduces glue waste and makes the application more uniform. At the same time, it can recycle part of the glue on the PE film and control the thickness of the glue on the PE film, thereby saving costs and increasing the adhesion of the glue.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the content of the patent application scope of the present invention should belong to the technical scope of the present invention.

Claims

1. A single-sided glue spraying device for PE film, comprising a device base, characterized in that: A tensioning roller is installed on the left side of the device base, and the tensioning roller is installed above the device base through a tensioning bracket. The tensioning bracket includes a tensioning screw, and the tensioning screw is installed on one side of the tensioning bracket. A roller seat is installed on the upper end of the tensioning screw, and the tensioning roller is installed on the upper end of the roller seat. The roller seat is slidably connected with the tensioning bracket. A leveling device is installed on the right side of the tensioning roller, and the leveling device includes a first roller and a second roller. The first roller is installed on the upper end of the leveling bracket, and the second roller is installed on the leveling bracket below the first roller. The leveling device is installed on the device base through the leveling bracket; The coating device is installed on the right side of the leveling device, and the coating device includes a coating pipe, a plurality of coating valves are installed at the lower end of the coating pipe, a coating nozzle is installed on the coating valve, and a coating brush device is installed on the right side of the coating device, and the coating brush device includes a coating brush roller, and the coating brush roller is installed on the base of the device through a coating brush bracket, and the upper roller surface of the coating brush roller is provided with coating micropores, and the coating brush roller is driven to rotate by a motor. A roller plate is installed in the roller drum of the coating brush roller, and the roller plate is fixedly installed inside the roller, and the roller plate is installed on the roller shaft of the roller, and a coating brush plate is installed at the lower end of the coating brush roller, and a guide roller is installed on the right side of the coating brush plate, and a coating device is installed on the right side of the coating brush roller, and the coating device includes a lower coating support plate and an upper coating suction block, and the lower coating support plate is installed obliquely on the right side of the device base, and the upper coating suction block is installed at a symmetrical position on the upper end of the lower coating support plate; The first roller is fixedly mounted on the leveling bracket, the second roller is slidably mounted on the leveling bracket, the second roller is mounted on the sliding block at the lower end through the second roller shafts on both sides, a leveling screw is mounted on the lower end of the sliding block, the leveling screw is mounted on one side of the leveling bracket, a rotating handle is mounted on the lower end of the leveling screw, and rubber baffles are mounted on both sides of the brush roller, the rubber baffles are fixedly mounted on the base of the device, the rubber baffles are vertically mounted to the brush plates, and the length of the roller plate is equal to the length of the roller The width of the roller plate is smaller than the diameter of the roller, and a sealing rubber strip is installed on the edge of the roller plate, and the sealing rubber strip can seal the contact between the roller plate and the roller, and the upper coating suction block is a sponge suction block, and the upper coating suction block is installed on the base of the device through an upper coating bracket, and a negative pressure box is installed on the upper end of one side of the upper coating suction block, and the upper coating suction block is installed at the port of the negative pressure box, and a glue collection tank is installed on one side of the negative pressure box, and a glue collection box is installed at the lower end of the glue collection tank, and a negative pressure fan is installed on the upper end of the negative pressure box.

2. A method for using a single-sided glue spraying device for PE film, characterized in that: The single-sided glue spraying device for PE film is the single-sided glue spraying device for PE film according to claim 1, comprising the following steps: S1: After the PE film enters the tensioning roller, the roller seat is adjusted by the tensioning screw. After adjusting the appropriate tensioning force, the PE film enters the leveling device and is adjusted by the second roller of the leveling device. During the adjustment process, the second roller is adjusted by adjusting the sliding block by the leveling screw, so that it can be at the same horizontal position as the bottom surface of the brush roller, so that the device paper just passes through the lower surface of the brush roller, and the PE film is sprayed in advance before entering the brush roller. The PE film is pre-sprayed by the spray nozzle of the spraying device, and the spray nozzle is used for spraying. Therefore, the glue used for spraying is lower in concentration than the brushing glue, which is convenient for spraying with the spray nozzle, and can make the PE film adhere better in the subsequent brushing process. After the spraying is completed; S2: The coating enters the PE film through the coating plate. During the coating process, the coating glue is installed on the lower side of the roller plate in the coating roller, and the coating of the PE film is completed through the coating micropores on the surface of the roller. During the coating process, the coating roller rotates and brushes, and the roller plate is tilted and fixedly installed in the roller, and does not rotate with the rotation of the roller, so that the coating glue is prevented from rolling to the upper end of the roller, and the coating glue in the roller can be scraped off, so that the coating glue is always at the lower end of the roller, which speeds up the coating process. After the coating is completed; S3: The coating is evenly applied through the upper coating suction block on the coating device on the right side of the coating roller, and the excess coating glue is collected. The upper coating suction block is used to collect the coating glue during the collection process, and the lower coating support block is used for support. The upper coating suction block is a sponge suction block, which can absorb the coating glue and allow the coating glue to enter the upper coating suction block. The coating glue in the upper coating suction block is extracted through the negative pressure box and enters the glue collection tank. The glue is collected through the glue collection tank and enters the glue collection box to complete the glue collection. At the same time, the temperature in the negative pressure box is 50-60°C to prevent the coating glue from solidifying during collection.

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