A film laminating machine

Abstract

The utility model provides a kind of laminating machine, including unwinding machine, extrusion composite device with compound machine and extruder, winding machine being sequentially arranged along the base material conveying direction, compound machine includes rack, extrusion roller being rotatably arranged on rack by extrusion bearing seat, cooling roller being rotatably arranged on rack by cooling bearing seat, the drive assembly of driving extrusion roller rotation, the spray assembly of carrying out spray operation to extrusion roller surface.This laminating machine is provided with the spray assembly of carrying out spray operation to extrusion roller surface, in the extrusion roller rotary operation process, the water mist that spray assembly sprays can evenly cover in the surface of extrusion roller, water mist can form water film isolation layer on the surface of extrusion roller, reduce the roughness of extrusion roller surface, the adhesion between extrusion roller and molten film reduces, molten film is not easy to adhere on extrusion roller, it is favorable to ensure laminating quality, reduce scrap rate.

Description

Technical Field

[0001] This utility model relates to the technical field of coating processing, and in particular to a coating machine. Background Technology

[0002] A laminating machine, also known as a laminating production line, is an industrial device that uses molten plastic to form a thin film layer on the surface of a substrate. It is widely used in packaging, printing, building materials, automotive, and other industries. The core principles of a laminating machine are as follows: 1. Raw material melting (plastic particles such as PHA and PBAT are heated and heated into a uniform melt within the extruder barrel through friction from screw rotation); 2. Film extrusion (molten plastic is extruded through a die slit to form a film of uniform thickness); 3. Substrate lamination (the extruded film is bonded to the substrate being conveyed under the action of pressure rollers); 4. Cooling and shaping (the laminated material is cooled by cooling rollers, allowing the film to solidify and adhere to the substrate surface); 5. Traction and winding (the shaped laminated product is pulled by traction rollers and wound into a finished product under tension control).

[0003] A Chinese patent application with publication number CN118478533A discloses a coating system and coating method thereof, which includes an unwinding machine, a plurality of first corona machines, a first extrusion composite device and a winding machine arranged in sequence.

[0004] An unwinding machine is a mechanical device used to smoothly unwind rolled materials (such as paper and other substrates) from a reel and transport them to subsequent processing equipment.

[0005] The first corona machine is a device used to perform corona treatment on materials to be coated (such as paper and other substrates). Corona treatment is an electrostatic treatment process that can make the surface of the material to be coated have higher adhesion.

[0006] The first extrusion laminating apparatus includes an extruder and a laminating machine. The extruder is a device used to extrude molten film from a die and cast it onto a substrate (such as paper). The laminating machine is used to extrude and laminate the film and the substrate (such as paper). The laminating machine includes an extrusion roller and a cooling roller, which rotate in opposite directions. The area between the extrusion roller and the cooling roller is a laminating zone for extruding and laminating the substrate and the film. The extrusion nozzle of the extruder is positioned corresponding to the laminating zone.

[0007] A winding machine is a mechanical device used to wind up materials to be coated (such as paper and other substrates) into finished products after tension control.

[0008] The existing technical solutions described above have the following drawbacks: When the coating system is working, the molten film is bonded to the material to be coated (such as paper or other substrates) under the pressure of the extrusion rollers. Since the molten film is in a high-temperature liquid state with low surface tension, it is easy for the molten film to come into close contact with the surface of the extrusion rollers. Although the surface of the extrusion rollers is finely processed, after long-term use, small depressions are likely to appear on the surface of the extrusion rollers, resulting in increased roughness and increased adhesion between the extrusion rollers and the molten film. The molten film is more likely to adhere to the extrusion rollers, which will not only affect the surface quality of the film and cause product defects, but also increase the downtime for maintenance of the laminating machine. Utility Model Content

[0009] The present invention aims to address the aforementioned shortcomings in the prior art by providing a coating machine that solves the problem of film easily adhering to the extrusion rollers.

[0010] The above-mentioned utility model objective is achieved through the following technical solution: a coating machine, comprising an unwinding machine arranged sequentially along the substrate conveying direction, an extrusion laminating device having a laminating machine and an extruder, and a winding machine, wherein the laminating machine includes a frame, an extrusion roller rotatably mounted on the frame via an extrusion bearing seat, a cooling roller rotatably mounted on the frame via a cooling bearing seat, a drive assembly for driving the extrusion roller to rotate, and a spray assembly for performing spraying operations on the surface of the extrusion roller.

[0011] The present invention is further configured such that: the spray assembly includes a high-pressure atomizer mounted on the extrusion bearing seat via a mounting plate, a spray pipe connected to the outlet of the high-pressure atomizer, a spray nozzle opened on the spray pipe and facing the extrusion roller, a water inlet pipe connected at one end to the inlet of the high-pressure atomizer and at the other end to a water tank.

[0012] The present invention is further configured such that: the end of the spray pipe away from the high-pressure atomizer is provided with a pipe cap whose bottom surface abuts against the top surface of the mounting plate.

[0013] The present invention is further configured such that the spray nozzle is a funnel shape with the smaller end facing inward.

[0014] The present invention is further configured such that: the drive assembly includes a drive motor mounted on the frame via a mounting bracket, a drive sprocket coaxially mounted on the output shaft of the drive motor, a driven sprocket coaxially mounted on the extrusion roller, and a chain that is connected to the drive sprocket and the driven sprocket by chain drive.

[0015] The present invention is further configured such that: a slider is provided on the bottom surface of the cooling bearing seat, and a slide rail is provided on the inclined mounting surface of the frame to slide in cooperation with the slider.

[0016] The present invention is further configured such that: a connecting plate protrudes outward from the side wall of the slide rail and is connected to the inclined mounting surface of the frame.

[0017] The present invention is further configured such that: a cylinder mounting hole is provided on the side wall of the frame, and an adjusting cylinder with the same tilt angle as the inclined mounting surface of the frame is fixedly installed in the cylinder mounting hole, and the piston rod of the adjusting cylinder is connected to the side wall of the cooling bearing seat.

[0018] In summary, the beneficial technical effects of this utility model are as follows: This coating machine is equipped with a spraying component for spraying the surface of the extrusion roller. During the rotation of the extrusion roller, the water mist sprayed by the spraying component can evenly cover the surface of the extrusion roller. The water mist can form a water film isolation layer on the surface of the extrusion roller, reducing the roughness of the extrusion roller surface. The adhesion between the extrusion roller and the molten film is reduced, and the molten film is less likely to adhere to the extrusion roller, which helps to ensure the coating quality and reduce the scrap rate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the frame of the coating machine in this utility model;

[0020] Figure 2 This is a schematic diagram of the extrusion compounding device in this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the cooling roller, cooling bearing seat and adjusting cylinder in this utility model;

[0022] Figure 4 This is a partial cross-sectional view of the cooling roller in this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the cooling roller and the circulating water supply device in this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the extrusion roller and spray pipe in this utility model;

[0025] Figure 7 yes Figure 6 Enlarged view of point A in the middle;

[0026] Figure 8 This is a schematic diagram of the structure of the infeed guide roller, cooling roller, extrusion roller, outlet guide roller, and extruder in this utility model.

[0027] In the above attached diagram: 1. Composite machine; 2. Frame; 3. Side frame; 4. Mounting port; 5. Flat mounting surface; 6. Angled mounting surface; 7. Cylinder mounting hole; 8. Inlet guide roller; 9. Inlet bearing housing; 10. Cooling roller; 11. Roller body; 12. Cooling water chamber; 13. Water inlet end cover; 14. Water inlet pipe; 15. Flange; 151. Sealing ring; 16. Cooling bearing housing; 17. Connecting strip; 18. Slider; 19. Slide rail; 20. Connecting plate; 21. Adjusting cylinder; 22. Circulation pipe 221. Rotary joint; 23. Water pump; 24. Cooling water tank; 25. Extrusion roller; 26. Extrusion bearing housing; 27. Mounting bracket; 28. Drive motor; 29. ​​Drive sprocket; 30. Driven sprocket; 31. Chain; 32. Mounting plate; 33. High-pressure atomizer; 34. Water tank; 35. Inlet pipe; 36. Spray pipe; 37. Spray nozzle; 38. Pipe cover; 39. Extruder; 40. Die head; 41. Outlet guide roller; 42. Bearing end cover; 43. Through hole. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this utility model clearer and easier to understand, the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] like Figure 1 As shown, this utility model proposes a coating machine, including an unwinding machine, an extrusion compounding device, and a winding machine arranged sequentially along the substrate conveying direction. The unwinding machine is a mechanical device in the prior art used to smoothly unwind the rolled material to be coated (such as paper or other substrates) from the roll and convey it to the subsequent processing equipment. The winding machine is a mechanical device in the prior art used to wind the material to be coated (such as paper or other substrates) into a finished product after tension control.

[0030] like Figure 2 As shown, the extrusion compounding device includes a compounding machine 1 and an extruder 39.

[0031] like Figure 2 As shown, the laminating machine 1 is used to extrude and laminate a film with a substrate (such as paper). The laminating machine 1 includes a frame 2, an infeed roller 8, a cooling roller 10, an extrusion roller 25, a drive assembly, a spray assembly, and an outlet roller 41.

[0032] like Figure 2 As shown, the frame 2 has two symmetrical side frames 3 that are screwed to the bottom of the factory area. The top surface of the side frame 3 has a mounting port 4. The bottom wall of the mounting port 4 consists of a horizontal flat mounting surface 5 and an upwardly inclined oblique mounting surface 6. The side wall of the side frame 3 in the thickness direction has a cylinder mounting hole 7 that communicates with the mounting port 4. The cylinder mounting hole 7 is a rectangular hole.

[0033] like Figure 2As shown, the guide roller 8 is rotatably mounted on the frame 2 via the guide bearing seat 9. There are two guide bearing seats 9, which are respectively located at both ends of the guide roller 8 and are screwed to the top surfaces of the two side frames 3.

[0034] like Figure 3 and 4 As shown, the cooling roller 10 includes a roller body 11 and a water inlet cap 13. The roller body 11 has a cooling water cavity 12 in its middle, which axially extends through the roller body 11. The water inlet cap 13 includes a water pipe 14 located in the middle and communicating with the cooling water cavity 12, and a flange 15 coaxially fixedly connected to the water pipe 14. There are two water inlet caps 13, each connected to one end of the roller body 11 by screws through the flange 15. One water inlet cap 13 is used for water inlet, and the other for water outlet. A sealing ring 151, penetrated by screws, is provided between the flange 15 and the roller body 11 of the water inlet cap 13. The sealing ring 151 forms a seal between the flange 15 and the roller body 11.

[0035] like Figure 2 and 3 As shown, there are two cooling rollers 10. The cooling rollers 10 are rotatably mounted on the frame 2 via cooling bearing seats 16. Cooling bearing seats 16 are provided on both water-passing end caps 13 of the cooling rollers 10. The water-passing pipes 14 of the water-passing end caps 13 pass through the cooling bearing seats 16.

[0036] like Figure 2 and 3 As shown, the cooling bearing housing 16 is slidably mounted on the inclined mounting surface 6 of the side frame 3. Two cooling bearing housings 16 on the same side frame 3 are connected by connecting strips 17 that are screwed together. There are two connecting strips 17, which are symmetrically arranged on both sides of the cooling bearing housing 16. A slider 18 is welded to the bottom surface of each cooling bearing housing 16. A slide rail 19 is provided on the inclined mounting surface 6 of the side frame 3 to slide with the slider 18. A connecting plate 20 protrudes outward from the side wall of the slide rail 19 and is screwed together with the inclined mounting surface 6 of the side frame 3.

[0037] like Figure 2 and 3 As shown, an adjusting cylinder 21 is installed in the cylinder mounting hole 7 of the side frame 3. The adjusting cylinder 21 is inclined, and the inclination angle of the adjusting cylinder 21 is the same as the inclination angle of the inclined mounting surface 6. The adjusting cylinder 21 is fixed to the side frame 3 by screw connection, and the piston rod of the adjusting cylinder 21 is welded and fixed to the side wall of the cooling bearing seat 16.

[0038] like Figure 5As shown, the cooling roller 10 is connected to a circulating water supply device via two water-filled end caps 13. The circulating water supply device includes a circulating pipe 22 connected to the two water-filled end caps 13, a water pump 23 mounted on the circulating pipe 22, and a cooling water tank 24. The circulating pipe 22 is connected to the water pipes 14 of the two water-filled end caps 13 via a rotary joint 221. When the circulating water supply device is working, the water pump 23 draws cooling water from the cooling water tank 24 and sends it through the circulating pipe 22 into the water pipe 14 of one of the water-filled end caps 13. Then, the cooling water flows through the water pipe 14 of the water-filled end cap 13 and enters the cooling water chamber 12 of the roller body 11. In the cooling water chamber 12, the cooling water exchanges heat with the substrate and film passing over the surface of the roller body 11. Then, the cooling water flows into the cooling water tank 24 after passing through the other water-filled end cap 13 and the circulating pipe 22 in sequence.

[0039] like Figure 2 As shown, the gap between the extrusion roller 25 and the cooling roller 10 is the lamination zone of the laminating machine 1, where the molten film and the material to be coated (such as paper or other substrates) are extruded and laminated.

[0040] like Figure 2 As shown, the extrusion roller 25 is rotatably mounted on the frame 2 via extrusion bearing seats 26. There are two extrusion bearing seats 26, which are respectively located at both ends of the extrusion roller 25 and are screwed to the flat mounting surface 5 of the side frame 3.

[0041] like Figure 2 As shown, the drive assembly is mounted on the frame 2 and is used to drive the extrusion roller 25 to rotate. The drive assembly includes a mounting frame 27, a drive motor 28, a drive sprocket 29, a driven sprocket 30, and a chain 31. The mounting frame 27 is welded to the side wall of the side frame 3. The drive motor 28 is screwed to the top surface of the mounting frame 27, that is, the drive motor 28 is fixedly mounted on the side wall of the side frame 3 through the mounting frame 27. The output shaft of the drive motor 28 is coaxially connected to the drive sprocket 29. The driven sprocket 30 is coaxially connected to the extrusion roller 25 through a coupling. The chain 31 is connected to the drive sprocket 29 and the driven sprocket 30 by chain drive.

[0042] like Figure 2 As shown, the spray assembly is mounted on the extrusion bearing housing 26. The spray assembly is used to spray the surface of the extrusion roller 25. During the rotation of the extrusion roller 25, the water mist sprayed by the spray assembly can evenly cover the surface of the extrusion roller 25. The water mist can form a water film isolation layer on the surface of the extrusion roller 25, reducing the surface roughness of the extrusion roller 25. The adhesion between the extrusion roller 25 and the molten film is reduced, and the molten film is less likely to adhere to the extrusion roller 25, which helps to ensure the coating quality and reduce the scrap rate.

[0043] like Figure 2As shown, the spray assembly includes a mounting plate 32, a high-pressure atomizer 33, a water inlet pipe 35, a water tank 34 with a lid, a spray pipe 36, and a pipe cap 38.

[0044] The number of mounting plates 32 is two, and the two mounting plates 32 are respectively welded to the top surfaces of the two extrusion bearing seats 26.

[0045] The high-pressure atomizer 33 is a device used to generate high-pressure water mist in the prior art. The high-pressure atomizer 33 is placed on the top surface of the mounting plate 32. The water tank 34 with a lid is placed outside the side frame 3. The water tank 34 is used to store pure water. Workers regularly open the lid of the water tank 34 and pour pure water into the water tank 34. Using pure water as the water source of the high-pressure atomizer 33 can avoid impurities from clogging the high-pressure atomizer 33. The inlet of the high-pressure atomizer 33 is connected to the water inlet pipe 35 by means of threaded connection, and the water inlet pipe 35 extends into the pure water in the water tank 34 through an opening on the side wall of the water tank 34.

[0046] As Figure 6 and 7 shown, the outlet of the high-pressure atomizer 33 is connected to the spray pipe 36 by means of threaded connection. The spray pipe 36 is in the shape of "冖". Spray openings 37 facing the extrusion roller 25 are formed through the pipe surface of the spray pipe 36. The spray openings 37 are in the shape of a funnel with the small head end facing inward. After the high-pressure water mist in the spray pipe 36 is sprayed out through the spray openings 37, an umbrella-shaped water curtain can be formed, which is beneficial to improving the coverage area and spray effect.

[0047] As Figure 2 shown, the pipe cap 38 is threadedly connected to one end of the spray pipe 36 away from the high-pressure atomizer 33. The pipe cap 38 is used to close the opening at one end of the spray pipe 36 away from the high-pressure atomizer 33. The bottom surface of the pipe cap 38 abuts against the top surface of the mounting plate 32, so that the spray assembly can be placed on the two mounting plates 32 more stably.

[0048] As Figure 2 and 8 shown, the extruder 39 has a die head 40. The extrusion outlet of the die head 40 is aligned with the compounding area of the compounding machine 1. The extruder 39 is a device in the prior art for extruding a molten film from the die head 40 and then casting it onto a material to be film-coated (such as a substrate like paper).

[0049] As Figure 2 shown, the outlet guide roller 41 is rotatably arranged on the frame 2 through a bearing end cap 42. The number of outlet guide rollers 41 is four. Through holes 43 for the ends of the outlet guide rollers 41 to pass through are formed on the side frame 3 for each outlet guide roller 41. Bearing end caps 42 are provided at both ends of each outlet guide roller 41. The bearing end caps 42 are screw-connected to the outer side wall of the side frame 3, and the bearing end caps 42 are aligned with the through holes 43.

[0050] As Figure 8As shown, the detailed working process of this embodiment is as follows: the substrate passes through the guide roller 8, cooling roller 10, extrusion roller 25 and exit guide roller 41 in sequence. The high-pressure sprayer draws pure water from the water tank 34 through the water inlet pipe 35. The high-pressure water mist generated by the high-pressure sprayer enters the spray pipe 36. The spray nozzle 37 is a funnel shape with the small end facing inward. After the high-pressure water mist in the spray pipe 36 is sprayed out through the spray nozzle 37, it can form an umbrella-shaped water curtain, which is beneficial to improve the coverage area and spraying effect.

[0051] This coating machine is equipped with a spraying component that sprays water onto the surface of the extrusion roller 25. During the rotation of the extrusion roller 25, the water mist sprayed by the spraying component can evenly cover the surface of the extrusion roller 25. The water mist can form a water film isolation layer on the surface of the extrusion roller 25, reducing the surface roughness of the extrusion roller 25. The adhesion between the extrusion roller 25 and the molten film is reduced, and the molten film is less likely to adhere to the extrusion roller 25, which helps to ensure coating quality and reduce the scrap rate.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A coating machine, comprising an unwinder, an extrusion laminating device having a laminating machine (1) and an extruder (39) arranged sequentially along the substrate conveying direction, and a rewinder, characterized in that: The composite machine (1) includes a frame (2), an extrusion roller (25) rotatably mounted on the frame (2) via an extrusion bearing seat (26), a cooling roller (10) rotatably mounted on the frame (2) via a cooling bearing seat (16), a drive assembly for driving the extrusion roller (25) to rotate, and a spray assembly for performing spraying operations on the surface of the extrusion roller (25).

2. The coating machine according to claim 1, characterized in that: The spray assembly includes a high-pressure atomizer (33) mounted on the extrusion bearing seat (26) via a mounting plate (32), a spray pipe (36) connected to the outlet of the high-pressure atomizer (33), a spray nozzle (37) opened on the spray pipe (36) and facing the extrusion roller (25), and a water inlet pipe (35) with one end connected to the inlet of the high-pressure atomizer (33) and the other end connected to the water tank (34).

3. A coating machine according to claim 2, characterized in that: The spray pipe (36) is provided with a pipe cap (38) at the end away from the high-pressure atomizer (33), the bottom surface of which abuts against the top surface of the mounting plate (32).

4. A coating machine according to claim 2, characterized in that: The spray nozzle (37) is funnel-shaped with the smaller end facing inward.

5. A coating machine according to claim 1, characterized in that: The drive assembly includes a drive motor (28) mounted on the frame (2) via a mounting bracket (27), a drive sprocket (29) coaxially mounted on the output shaft of the drive motor (28), a driven sprocket (30) coaxially mounted on the extrusion roller (25), and a chain (31) that is chain-driven connected to the drive sprocket (29) and the driven sprocket (30).

6. A coating machine according to claim 1, characterized in that: A slider (18) is provided on the bottom surface of the cooling bearing seat (16), and a slide rail (19) that slides and engages with the slider (18) is provided on the inclined mounting surface (6) of the frame (2).

7. A coating machine according to claim 6, characterized in that: The slide rail (19) has a connecting plate (20) that protrudes outward from the side wall and is connected to the inclined mounting surface (6) of the frame (2).

8. A coating machine according to claim 6, characterized in that: The side wall of the frame (2) is provided with a cylinder mounting hole (7), and an adjusting cylinder (21) with the same tilt angle as the inclined mounting surface (6) of the frame (2) is fixedly installed in the cylinder mounting hole (7). The piston rod of the adjusting cylinder (21) is connected to the side wall of the cooling bearing seat (16).

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