Automatic plate laminating device

Abstract

The invention belongs to the technical field of film covering equipment, and particularly provides an automatic plate film covering device which comprises a feeding table, a spraying table and a film covering table which are sequentially arranged. A conveying roller set and a smearing roller are rotationally installed on the feeding table, and a smearing ring is arranged on the smearing roller. A spraying conveying belt and a spraying gun are mounted on the spraying table; the film covering table comprises a machine shell and a film covering table frame, a film covering conveying belt is rotatably installed on the film covering table frame, a first heating roller and a second heating roller are sequentially and rotatably connected to the film covering table frame, the first heating roller is a full-roller heating roller, the temperature is set to be 60-75 DEG C, the second heating roller is an electric heating roller with only two ends provided with heating parts, and the temperature is set to be 100-120 DEG C; a film laminating roller is rotatably connected above one side, far away from the second heating roller, of the first heating roller on the film laminating rack; and a film cutting device is arranged on one side, far away from the film laminating roller, of the first heating roller on the film laminating rack. The structure can realize the bonding reinforcement of the laminated film at the edge of the plate and prevent falling off.

Description

Technical Field

[0001] This invention relates to the field of coating equipment technology, and more particularly to an automated coating device for sheet materials. Background Technology

[0002] Lamination is a common surface decoration process. By applying a layer of plastic film to the surface of a board, the gloss, wear resistance, weather resistance and waterproof performance of the board can be significantly improved. Existing lamination technology generally uses a conveyor belt to transport the board. According to different lamination processes, it is mainly divided into two categories: immediate coating lamination and pre-coated film lamination.

[0003] However, existing board coating technologies generally suffer from a common problem during long-term use: the coating layer easily peels off the board surface, and the peeling starts almost entirely at the edges. Specifically, during subsequent processing or use, the coating layer at the edges bears the greatest stress concentration, and the edges are also the first to absorb moisture and expand when environmental humidity changes. These factors work together to cause the coating layer to gradually peel off from the edges and spread towards the center, ultimately leading to product failure.

[0004] To address the aforementioned edge delamination problem, existing technologies primarily employ the following improvements: One approach is to uniformly coat the entire board surface with a thicker adhesive layer, aiming to indirectly improve edge adhesion by enhancing overall bonding strength. While this solution improves edge adhesion to some extent, it results in significant adhesive waste in the central area, and an excessively thick adhesive layer may lead to surface defects such as orange peel texture. Another approach is to install edge pressure rollers in the laminating equipment to apply additional pressure to the board edges. However, due to height differences between the board edges and the central area, such as chamfers or rounded edges, mechanical pressing is difficult to achieve uniform pressure and can easily cause film damage. Alternatively, a second adhesive coating or hot-melt edge sealing treatment can be applied to the board edges after lamination. This solution adds extra steps and equipment, reduces production efficiency, and the secondary adhesive layer has an interface with the original lamination layer, posing a risk of secondary delamination during long-term use. Summary of the Invention

[0005] To address the aforementioned shortcomings, this invention provides an automated film coating device for sheet materials, which can strengthen the adhesion of the film coating at the edges of the sheet materials and prevent the film from peeling off.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automated sheet metal coating device, comprising a feeding table, a spraying table, and a coating table arranged sequentially; The feeding platform is rotatably mounted with a conveying roller assembly driven by a first driving device. A first mounting frame is provided on the top of the feeding platform, and an applicator roller is rotatably mounted on the bottom of the first mounting frame. Both ends of the applicator roller are fixedly connected with applicator rings for applying conductive liquid to the two edges of the board. A spraying conveyor belt driven by a second drive device is rotatably mounted on the spraying table. A second mounting frame is provided above the spraying table, and a spray gun for spraying hot melt adhesive powder onto the edge of the board where conductive liquid has been applied is installed at the bottom of the second mounting frame. The laminating table includes a housing and a laminating frame fixedly connected inside it. A laminating conveyor belt driven by a third drive device is rotatably mounted on the laminating frame. A first heating roller and a second heating roller are rotatably connected in sequence on the laminating frame. The first heating roller is a full-roller heating roller, and its heating temperature is set to be 60℃-75℃ lower than the melting temperature of the hot melt adhesive powder. The second heating roller is an electric heating roller with heating parts at only two ends, and its heating part is set to be 100℃-120℃ higher than the melting temperature of the hot melt adhesive powder. A laminating roller is rotatably connected above the first heating roller on the side away from the second heating roller on the laminating frame. A film cutting device is provided on the side of the laminating frame away from the first heating roller.

[0007] As a further improvement of the present invention, the spraying conveyor belt has a plurality of receiving holes on its belt surface, and an air outlet is provided between the upper and lower belt surfaces of the spraying conveyor belt. The air outlet is connected to the air inlet of a vacuum pump through a first pipeline. A material collection hopper is provided below the lower belt surface of the spraying conveyor belt. The bottom of the material collection hopper is connected to the air inlet of the vacuum pump through a second pipeline. The air outlet of the vacuum pump is connected to the powder box through a third pipeline.

[0008] As a further improvement of the present invention, the powder box is fixedly connected to the top of the second mounting bracket, the powder box is connected to the spray gun, the second mounting bracket is also fixedly connected to a second sliding shaft, the spray gun is fixedly connected to the spray gun slider, and the spray gun slider is slidably mounted on the second sliding shaft.

[0009] As a further improvement of the present invention, a conductive liquid tank is fixedly connected to the top of the first mounting bracket, and the liquid outlets on both sides of the bottom of the conductive liquid tank are respectively connected to the conductive liquid nozzles through hoses. The two conductive liquid nozzles are respectively fixedly connected to the nozzle slider, and the nozzle slider is slidably mounted on the first sliding shaft. The liquid outlet of the conductive liquid nozzle is vertically downward and directly opposite the coating ring on the coating roller.

[0010] As a further improvement of the present invention, one end of the coating roller is fixedly connected to a first drive pulley, the first drive pulley is connected to a second drive pulley via a drive belt, and the second drive pulley is fixedly connected to the output end of the first drive device.

[0011] As a further improvement of the present invention, a first pulley is fixedly connected to the drive shaft of the third drive device. The first pulley and the second pulley are connected by belt drive. The second pulley is fixedly connected to the middle of the rotating shaft. The rotating shaft is rotatably connected to the coating table. A third pulley is fixedly connected to the end of the rotating shaft away from the coating table. The third pulley and the fourth pulley are connected by belt drive. The fourth pulley is fixedly connected to one end of the first heating roller. A fifth pulley is fixedly connected to the end of the first heating roller away from the fourth pulley. The fifth pulley and the sixth pulley are connected by belt drive. The sixth pulley is fixedly connected to one end of the second heating roller.

[0012] As a further improvement of the present invention, the film cutting device includes a drive cylinder fixedly connected to both sides of the film coating table. A film cutting roller is fixedly connected vertically downward at the output end of the drive cylinder. A film cutting knife is fixedly connected to the bottom of the film cutting roller. The film cutting knife is arranged along the axial direction of the film cutting roller and is used to cut the film coating.

[0013] As a further improvement of the present invention, the application ring is fixedly attached to both ends of the application roller by adhesive, and the application ring is higher than the surface of the application roller.

[0014] The beneficial effects of this invention are: 1. By employing selective edge adhesive application, sufficient adhesive layer is applied to areas prone to film peeling, significantly improving edge bonding strength and reducing the technical problem of the film layer detaching from the board edge. Applying adhesive only to the edges also saves costs. Furthermore, the phased, zoned heating method and low-temperature pre-pressing ensure smooth film adhesion, preventing heat shrinkage and deformation that can result in orange peel texture. This ensures a smooth and glossy finished surface and avoids the defects caused by high-temperature heat shrinkage and deformation in a single high-temperature hot-pressing process. Zoned heating also prevents heat damage to the film caused by full-area heating, ensuring the smoothness of the coated surface.

[0015] 2. A spraying conveyor belt with a collection hole is installed at the spraying station. A vacuum pump continuously draws suction from the space between the upper and lower surfaces of the conveyor belt, creating negative pressure on the conveyor belt surface. This negative pressure firmly adheres the sheet material to the conveyor belt surface, preventing it from shifting during high-speed transport and spraying, thus ensuring spraying accuracy. Simultaneously, some of the hot melt adhesive powder not adhering to the sheet material is extracted through the collection hole by the vacuum pump via the outlet, while the remaining powder falls back into the collection hopper and is extracted from the bottom of the hopper by the vacuum pump, ultimately being discharged into the powder box through the vacuum pump outlet for recycling and reuse. By integrating the sheet material adsorption and positioning with the powder recycling function into the same vacuum system, the structure is compact and energy-efficient, achieving the recycling of hot melt adhesive powder, improving material utilization, and simultaneously avoiding dust pollution of the workshop environment. Attached Figure Description

[0016] Figure 1 This is an isometric schematic diagram of an automated film coating device for sheet materials; Figure 2 This is a schematic diagram of the feeding platform assembly structure; Figure 3 First schematic diagram of the spray booth assembly structure; Figure 4 This is a second schematic diagram of the spray booth assembly structure; Figure 5 This is a first schematic diagram of the internal structure of the lamination station; Figure 6 This is a second schematic diagram of the internal structure of the lamination station.

[0017] In the figure: 1-feeding platform, 100-first drive device, 101-conveying roller group, 102-first mounting frame, 103-conducting liquid tank, 104-second drive pulley, 105-first drive pulley, 106-applying roller, 107-applying ring, 108-nozzle slider, 109-first sliding shaft, 110-conducting liquid nozzle; 2-Spraying table, 200-Spraying conveyor belt, 201-Collection hole, 202-Second mounting bracket, 203-Powder box, 204-Second drive device, 205-Collection hopper, 206-First pipeline, 207-Vacuum pump, 208-Third pipeline, 209-Spray gun, 210-Spray gun slider, 211-Second sliding shaft, 212-Second pipeline; 3-Laminating table, 300-Laminating table frame, 301-Machine housing, 302-Laminating roller, 303-First heating roller, 304-Fifth pulley, 305-Drive cylinder, 306-Cut roller, 307-Sixth pulley, 308-Second heating roller, 309-Fourth pulley, 310-Third pulley, 311-Second pulley, 312-First pulley. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific examples described herein are merely illustrative and not intended to limit the invention. The directional terms used in the following embodiments, such as up, down, left, right, front, or back, are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the invention. Furthermore, in all embodiments, the same reference numerals denote the same elements.

[0019] Please see Figures 1 to 6 The present invention provides an automated film coating device for sheet materials, including a feeding platform 1, on which a conveying roller group 101 is rotatably mounted, and the conveying roller group 101 is driven by a first driving device 100.

[0020] A first mounting bracket 102 is provided on the top of the feeding platform 1, and an applicator roller 106 is rotatably mounted on the bottom of the first mounting bracket 102. A first drive pulley 105 is fixedly connected to one end of the applicator roller 106, and the first drive pulley 105 is connected to a second drive pulley 104 via a drive belt. The second drive pulley 104 is fixedly connected to the output end of the first drive device 100. Applicator rings 107 are fixedly attached to both ends of the applicator roller 106 by adhesive, and the applicator rings 107 are higher than the surface of the applicator roller 106.

[0021] A conductive liquid tank 103 is fixedly connected to the top of the first mounting bracket 102. The conductive liquid tank 103 has outlets on both sides of its bottom. These outlets are connected to conductive liquid nozzles 110 via flexible hoses. The outlet ends of the conductive liquid nozzles 110 point vertically downwards, directly opposite the application ring 107 on the application roller 106. The two conductive liquid nozzles 110 are fixedly connected to corresponding nozzle sliders 108. The nozzle sliders 108 are slidably mounted on the first sliding shaft 109 via sliding holes.

[0022] As a further explanation of this embodiment, the nozzle slider 108 on the first sliding shaft 109 can be moved according to the width of the material to be processed to adjust the position of the two conductive liquid nozzles 110, and the coating ring 107 can be attached and fixed on the coating roller 106 according to the nozzle position. The first drive device 100 is started to drive the conveying roller group 101 on the feeding table 1 and the coating roller 106 on the first mounting frame 102 to rotate; the conductive liquid in the conductive liquid tank 103 is sprayed out from the conductive liquid nozzle 110 through the hose and sprayed onto the coating ring 107 on the coating roller 106. When the material is conveyed by the conveying roller group 101 and passes under the coating roller 106, the coating ring 107 evenly coats the conductive liquid on both sides of the material and presses down on the edges of the material to effectively prevent the edges of the flexible material from warping.

[0023] A spraying station 2 is provided at the discharge end of the feeding platform 1. A spraying conveyor belt 200 is rotatably mounted on the spraying station 2. The spraying conveyor belt 200 is matched with the conveyor roller group 101 on the feeding frame. The spraying conveyor belt 200 is driven by a second drive device 204. Several receiving holes 201 are opened on the belt surface of the spraying conveyor belt 200. Several air outlets are opened between the upper and lower belt surfaces of the spraying conveyor belt 200 and on the side wall of the spraying station 2. The air outlets are connected to the air inlet of the vacuum pump 207 through the first pipeline 206.

[0024] A material collection hopper 205 is provided below the lower surface of the spraying conveyor belt 200. The discharge port at the bottom of the material collection hopper 205 is also connected to the air inlet of the vacuum pump 207 through the second pipe 212. The air outlet of the vacuum pump 207 is connected to the powder box 203 through the third pipe 208. The powder box 203 is fixedly connected to the top of the second mounting bracket 202, which is fixedly connected above the spraying table 2.

[0025] The powder box 203 has discharge ports on both sides of its bottom. These discharge ports are connected to the spray gun 209 via discharge pipes. The spray gun 209 is fixedly connected to the spray gun slider 210. The spray gun slider 210 has a pair of sliding holes in its center. The spray gun slider 210 is slidably mounted on a second sliding shaft 211, which is fixedly connected to the second mounting bracket 202. The output end of the spray gun 209 points vertically downwards.

[0026] As a further explanation of this embodiment, the nozzle slider 108 on the second sliding shaft 211 can be moved according to the width of the material to be processed to adjust the position of the two spray guns 209. The second drive device 204 is activated, causing the spray conveyor belt 200 on the spraying table 2 to operate. The material to be processed is conveyed to the spray conveyor belt 200 by the conveyor roller group 101 on the feeding table 1 and then conveyed forward. Simultaneously, the vacuum pump 207 is activated to adsorb the lightweight material onto the conveyor belt, preventing it from shifting during operation. The powder box 203 contains hot melt adhesive powder. When the material to be processed passes under the second mounting frame 202, the spray guns 209 spray hot melt adhesive powder onto the areas on the material where conductive liquid has already been applied, causing the hot melt adhesive powder to adhere to the conductive liquid area. Hot melt adhesive powder that does not adhere to the board and falls onto the spraying conveyor belt 200 is partially extracted by vacuum pump 207 through the collection hole 201 between the upper and lower belt surfaces, and then left on the surface of the conveyor belt. The remaining hot melt adhesive powder that does not enter the collection hole 201 falls back to the collection hopper 205 with the movement of the conveyor belt. It is then extracted by vacuum pump 207 from the bottom outlet of the collection hopper 205 and discharged into the powder box 203 through the outlet end of vacuum pump 207, thus achieving recycling and reuse.

[0027] A coating station 3 is provided on the side of the spraying station 2 away from the feeding station 1. The coating station 3 includes an outer housing 301 and a coating frame 300 fixedly connected inside the housing 301. A coating conveyor belt is rotatably mounted on the coating frame 300 and is driven by a third drive device.

[0028] A first pulley 312 is fixedly connected to the drive shaft of the third drive device. A second pulley 311 is positioned above the first pulley 312, and the first pulley 312 and the second pulley 311 mesh and drive each other. The second pulley 311 is fixedly connected to the middle of the rotating shaft, which is rotatably connected to the laminating table 300. A third pulley 310 is fixedly connected to the end of the rotating shaft away from the laminating table 300. The third pulley 310 and the fourth pulley 309 are connected via belt drive. The fourth pulley 309 is fixedly connected to one end of the first heating roller 303, which is rotatably connected to the laminating table 303. The first heating roller 303 is an electrically heated roller with full roller heating. A fifth pulley 304 is fixedly connected to the end of the first heating roller 303 away from the fourth pulley 309. The fifth pulley 304 is connected to the sixth pulley 307 via belt drive. The sixth pulley 307 is fixedly connected to one end of the second heating roller 308. The second heating roller 308 is rotatably connected to the coating table 300. The second heating roller 308 is an electric heating roller with heating parts only at both ends. The bottoms of the second heating roller 308 and the first heating roller 303 are coplanar.

[0029] As a further explanation of this embodiment, after the third driving device is started, its drive shaft drives the first pulley 312 to rotate. The first pulley 312 transmits power to the second pulley 311 through meshing, driving the rotating shaft to rotate on the laminating table 300. The third pulley 310, which is away from the laminating table 300, drives the fourth pulley 309 to rotate via a belt, thereby driving the first heating roller 303 to rotate. The first heating roller 303 is an electrically heated roller with full-roll heating, and its roller surface maintains a uniform temperature, used for preheating and pressing the laminating material. The fifth pulley 304, which is fixed to the first heating roller 303, drives the sixth pulley 307 to rotate via a belt, thereby driving the second heating roller 308 to rotate. The second heating roller 308 is an electrically heated roller with heating parts only at both ends, and its middle area is a non-heated area, used to selectively heat the edge area of ​​the board during the lamination process, so that the hot melt adhesive powder in the edge area melts and bonds, while the middle area maintains a lower temperature to avoid excessive shrinkage of the film.

[0030] A coating roller 302 is rotatably connected above the first heating roller 303 on the side away from the second heating roller 308 on the coating table 300, and the coating roller 302 has a layer to be coated wound on it.

[0031] A film cutting device is provided on the side of the first heating roller 303 on the laminating table 300 away from the laminating roller 302. The film cutting device includes a drive cylinder 305 fixedly connected to both sides of the laminating table 300. A film cutting roller 306 is fixedly connected vertically downward at the output end of the drive cylinder 305. A film cutting knife is fixedly connected to the bottom of the film cutting roller 306 and is arranged along the axial direction of the film cutting roller 306.

[0032] The working principle and usage process of this embodiment are as follows: Based on the width of the material to be processed, the operator pre-adjusts the position of the nozzle slider 108 on the first sliding shaft 109 so that the two conductive liquid nozzles 110 are directly facing the corresponding coating rings 107 attached to the coating roller 106. The conductive liquid in the conductive liquid tank 103 is sprayed out by the conductive liquid nozzles 110 and sprayed onto the surface of the coating rings 107 on the coating roller 106. Then, the first drive device 100 is activated, driving the conveyor roller group 101 to rotate and convey the material backward. At the same time, the first drive device 100 drives the second drive pulley 104 through the drive belt, thereby driving the first drive pulley 105 and the coating roller 106 to rotate.

[0033] As the sheet material is conveyed by the conveying roller group 101 and passes under the coating roller 106, the coating roller 106 rotates, causing the coating ring 107 to contact the edges of the sheet material on both sides, evenly applying the conductive liquid to the edge area of ​​the sheet material. At the same time, the coating ring 107 applies slight downward pressure to the edge of the sheet material, effectively preventing edge warping of the flexible sheet material during conveying, and providing a good adhesion base for subsequent precise spraying of hot melt adhesive powder.

[0034] The coated sheet material, after the conductive liquid coating is applied, is transferred by the conveyor roller group 101 to the spraying conveyor belt 200 on the spraying table 2. The second drive device 204 drives the spraying conveyor belt 200 to operate. When the sheet material moves with the spraying conveyor belt 200 to below the second mounting frame 202, the spray gun 209, whose position is pre-adjusted according to the width of the sheet material, is activated to spray hot melt adhesive powder onto the areas of the sheet material edges that have been coated with conductive liquid. The conductive liquid area has higher electrostatic adhesion, allowing the hot melt adhesive powder to adhere precisely to both edges of the sheet material, forming an edge-enriched adhesive powder distribution.

[0035] Simultaneously, vacuum pump 207 starts, continuously suctioning the space between the upper and lower surfaces of the spraying conveyor belt 200, creating negative pressure on the conveyor belt surface. The receiving hole 201 on the spraying conveyor belt 200 allows this negative pressure to act on the bottom of the sheet material, firmly adhering it to the conveyor belt surface and preventing it from shifting during high-speed conveying and spraying. Furthermore, vacuum pump 207 also recycles and reuses the hot melt adhesive powder.

[0036] The coated sheet is transferred from the spraying conveyor belt 200 to the laminating conveyor belt of the laminating table 3. The third drive device is activated, driving the laminating conveyor belt to transport the sheet backward. The laminating roller 302 has the layer to be laminated wound on it. The layer to be laminated is pulled above the sheet and passes under the first heating roller 303 along with the sheet. The first heating roller 303 is an electrically heated roller with full roller heating, and its roller surface maintains a uniform temperature of 60℃-75℃, which is lower than the melting temperature of the hot melt adhesive powder. When the sheet and the layer to be laminated enter under the first heating roller 303, the first heating roller 303 preheats and presses the film, making the film soften and adhere smoothly to the surface of the sheet. The laminated sheet continues to be transported forward to the bottom of the film cutting device, where the film cutting blade descends to cut the film along the edge of the sheet.

[0037] When the semi-finished product passes under the second heating roller 308, the temperature of the heating sections at both ends of the second heating roller 308 is 100℃-120℃. This temperature is higher than the melting temperature of the hot melt adhesive powder, causing the hot melt adhesive powder concentrated in the edge area to completely melt and become viscous. The conductive liquid can conduct heat to further promote its melting. Under the pressure of the second heating roller 308, a strong bond is formed. Meanwhile, the non-heated area in the middle of the second heating roller 308 maintains a lower temperature to prevent the central area of ​​the film from being overheated and causing thermal shrinkage. After the edge reinforcement is completed, the board is laminated and exported from the laminating table 3.

[0038] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above-described embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An automated laminating device for sheet materials, characterized in that, It includes a feeding station (1), a spraying station (2), and a coating station (3) arranged in sequence; The feeding platform (1) is rotatably mounted with a conveying roller group (101) driven by a first driving device (100). A first mounting frame (102) is provided on the top of the feeding platform (1). A coating roller (106) is rotatably mounted on the bottom of the first mounting frame (102). Both ends of the coating roller (106) are fixedly connected with coating rings (107) for applying conductive liquid to the two sides of the plate. The spraying station (2) is rotatably mounted with a spraying conveyor belt (200) driven by a second drive device (204). A second mounting frame (202) is provided above the spraying station (2). A spray gun (209) for spraying hot melt adhesive powder onto the area of ​​the edge of the board that has been coated with conductive liquid is installed at the bottom of the second mounting frame (202). The laminating table (3) includes a housing (301) and a laminating frame (300) fixedly connected inside it. A laminating conveyor belt driven by a third drive device is rotatably mounted on the laminating frame (300). A first heating roller (303) and a second heating roller (308) are rotatably connected in sequence on the laminating frame (300). The first heating roller (303) is a full-roller heating roller, and its heating temperature is set to 60°C-75°C, which is lower than the melting temperature of the hot melt adhesive powder. The second heating roller (308) is an electric heating roller with heating parts at both ends, and its heating part is set to 100°C-120°C, which is higher than the melting temperature of the hot melt adhesive powder. A laminating roller (302) is rotatably connected above the side of the first heating roller (303) away from the second heating roller (308) on the laminating frame (300). A film cutting device is provided on the side of the first heating roller (303) away from the laminating roller (302) on the laminating frame (300).

2. The automated film coating device for boards according to claim 1, characterized in that, The spraying conveyor belt (200) has several receiving holes (201) on its belt surface. An air outlet is provided between the upper and lower belt surfaces of the spraying conveyor belt (200). The air outlet is connected to the air inlet of the vacuum pump (207) through a first pipeline (206). A material collection hopper (205) is provided below the lower belt surface of the spraying conveyor belt (200). The bottom of the material collection hopper (205) is connected to the air inlet of the vacuum pump (207) through a second pipeline (212). The air outlet of the vacuum pump (207) is connected to the powder box (203) through a third pipeline (208).

3. The automated film coating device for boards according to claim 2, characterized in that, The powder box (203) is fixedly connected to the top of the second mounting bracket (202), and the powder box (203) is connected to the spray gun (209). The second mounting bracket (202) is also fixedly connected to a second sliding shaft (211). The spray gun (209) is fixedly connected to the spray gun slider (210), and the spray gun slider (210) is slidably mounted on the second sliding shaft (211).

4. The automated film coating device for boards according to claim 1, characterized in that, The top of the first mounting bracket (102) is fixedly connected to a conductive liquid tank (103). The liquid outlets on both sides of the bottom of the conductive liquid tank (103) are connected to the conductive liquid nozzles (110) through hoses. The two conductive liquid nozzles (110) are fixedly connected to the nozzle slider (108). The nozzle slider (108) is slidably mounted on the first sliding shaft (109). The liquid outlet of the conductive liquid nozzle (110) is vertically downward and directly opposite the applicator ring (107) on the applicator roller (106).

5. The automated film coating device for boards according to claim 1, characterized in that, One end of the coating roller (106) is fixedly connected to a first drive pulley (105), the first drive pulley (105) is connected to a second drive pulley (104) via a drive belt, and the second drive pulley (104) is fixedly connected to the output end of the first drive device (100).

6. The automated film coating device for boards according to claim 1, characterized in that, A first pulley (312) is fixedly connected to the drive shaft of the third drive device. The first pulley (312) meshes with a second pulley (311) for transmission. The second pulley (311) is fixedly connected to the middle of the rotating shaft. The rotating shaft is rotatably connected to the coating table (300). A third pulley (310) is fixedly connected to the end of the rotating shaft away from the coating table (300). The third pulley (310) is connected to a fourth pulley (309) via belt transmission. The fourth pulley (309) is fixedly connected to one end of the first heating roller (303). A fifth pulley (304) is fixedly connected to the end of the first heating roller (303) away from the fourth pulley (309). The fifth pulley (304) is connected to a sixth pulley (307) via belt transmission. The sixth pulley (307) is fixedly connected to one end of the second heating roller (308).

7. The automated film coating device for boards according to claim 1, characterized in that, The film cutting device includes drive cylinders (305) fixedly connected to both sides of the film coating table (300). The output end of the drive cylinder (305) is fixedly connected to a film cutting roller (306) vertically downward. The bottom of the film cutting roller (306) is fixedly connected to a film cutting knife. The film cutting knife is arranged along the axial direction of the film cutting roller (306) and is used to cut the film coating.

8. The automated film coating device for boards according to claim 1, characterized in that, The application ring (107) is fixedly attached to both ends of the application roller (106) by adhesive, and the application ring (107) is higher than the surface of the application roller (106).

Images