Aluminum-plastic film double-sided coating device

Abstract

The utility model discloses an aluminum plastic film double-side coating device which comprises a machine table, a first coating mechanism, a vacuum adsorption roller, a second coating mechanism and a drying oven are sequentially arranged on the machine table in the moving direction of a film material, and the coating mechanisms comprise a front side coating mechanism and a back side coating mechanism. The first coating mechanism comprises a first gravure roller and a first pressing die assembly arranged above the first gravure roller, the first pressing die assembly comprises a first air cylinder, a first pressing roller and a second pressing roller, the first pressing roller and the second pressing roller are controlled by the first air cylinder, a mounting frame is arranged at the bottom end of a piston rod of the first air cylinder, and the first pressing roller and the second pressing roller are rotationally mounted on the mounting frame. The first coating mechanism comprises a first gravure roller and a first pressing die assembly arranged on one side of the first gravure roller, the first pressing roller and the second pressing roller are arranged in a spaced mode and symmetrically distributed on the two sides of the axis of the first gravure roller, and the second coating mechanism comprises a second gravure roller and a second pressing die assembly arranged on one side of the second gravure roller; the third pressing roller is rotationally installed at the bottom end of a piston rod of the second air cylinder.

Description

Technical Field

[0001] This utility model relates to the field of aluminum-plastic film coating technology, specifically to an aluminum-plastic film double-sided coating device. Background Technology

[0002] Aluminum-plastic film products possess superior flexibility and also offer numerous excellent properties such as oxygen barrier, moisture protection, light blocking, and antistatic properties. As a component of lithium batteries used in electronic products, it is widely used in various small digital products due to its high energy density and superior adaptability to high and low temperature environments.

[0003] In the production process of aluminum-plastic film for batteries, a specific functional paste needs to be coated on both sides of the rolled aluminum foil substrate to ensure a smooth, even surface, good adhesion, and no peeling, shedding, dust accumulation, or bubbles after drying. Existing coating equipment typically has only one coating unit. When coating aluminum-plastic film, one side is usually coated first, dried, and then the other side is coated and dried again. This results in low overall production efficiency, slow production speed, and excessively long product turnover cycle, which seriously affects the production schedule. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing a double-sided coating device for aluminum-plastic film, which can simultaneously coat the upper and lower surfaces of the aluminum-plastic film and requires only one drying cycle, thereby improving production efficiency and coating quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A double-sided coating apparatus for aluminum-plastic film includes a machine base. Along the film material movement direction, the machine base is sequentially equipped with a first coating mechanism, a vacuum adsorption roller, a second coating mechanism, and an oven. The coating mechanisms include a front coating mechanism and a back coating mechanism. The first coating mechanism includes a first gravure roller and a first pressing assembly disposed above the first gravure roller. The first pressing assembly includes a first cylinder and a first pressure roller and a second pressure roller controlled by the first cylinder. A mounting bracket is provided at the bottom end of the piston rod of the first cylinder, and the first and second pressure rollers are rotatably mounted on the mounting bracket. The first and second pressure rollers are spaced apart and symmetrically distributed on both sides of the axis of the first gravure roller. During coating, the film material passes sequentially through the lower surface of the first pressure roller, the upper surface of the first gravure roller, and the lower surface of the second pressure roller. The second coating mechanism includes a second gravure roller and a second die assembly disposed on one side of the second gravure roller. The second die assembly includes a second cylinder and a third pressure roller controlled by the second cylinder. The third pressure roller is rotatably mounted on the bottom end of the piston rod of the second cylinder. During coating, the film material passes sequentially through the upper surface of the vacuum adsorption roller and the upper surface of the second gravure roller.

[0007] Preferably, a tension adjustment mechanism is provided on one side of the first molding assembly. The tension adjustment mechanism includes a tension adjustment roller and an adjustment handle for controlling the tension adjustment roller. During coating, the film material passes over the upper side of the tension adjustment roller.

[0008] Preferably, the machine tool is also equipped with an exhaust fan for drawing a vacuum into the vacuum adsorption roller.

[0009] Preferably, the first coating mechanism and the second coating mechanism further include a slurry application device, which includes a slurry tank, a material box, and a feeding pump for conveying slurry from the slurry tank to the material box. The material box has an opening on one side, and scrapers are provided on the upper and lower sides of the opening. The first gravure roller and the second gravure roller are respectively located on the opening side of the corresponding material box.

[0010] Preferably, the machine tool is further provided with an auxiliary cleaning assembly. The auxiliary cleaning assembly is located on the side of the second gravure roller away from the second die assembly. The auxiliary cleaning assembly includes a third cylinder, a fourth cylinder, a first auxiliary cleaning roller controlled by the third cylinder, and a second auxiliary cleaning roller controlled by the fourth cylinder. The first auxiliary cleaning roller is rotatably connected to the bottom end of the piston rod of the third cylinder, and the second auxiliary cleaning roller is rotatably connected to the bottom end of the piston rod of the fourth cylinder. The first auxiliary cleaning roller is located near the oven inlet, and the second auxiliary cleaning roller is located between the first auxiliary cleaning roller and the second gravure roller.

[0011] Preferably, the machine platform is further provided with a number of guide rollers along the direction of film material movement.

[0012] This utility model has significant advantages and beneficial effects compared with the prior art:

[0013] (1) By setting two coating mechanisms on the same equipment, the upper and lower surfaces of the membrane can be coated at the same time. The coated membrane only needs to be dried once, which improves production efficiency and reduces production costs.

[0014] (2) By setting the first pressure roller and the second pressure roller at the bottom of the piston rod of the first cylinder, wrinkles are prevented after the film is coated, the coating quality is improved and the production cost is reduced.

[0015] (3) By setting up a vacuum adsorption roller, the film material can be made to fit the second gravure roller better during reverse coating, making the coating more uniform and improving the coating quality.

[0016] (4) By setting up a cleaning mechanism to lift the film material away from the second gravure roller, it is easier to clean the second gravure roller.

[0017] To more clearly illustrate the structural features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments: Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the coating state according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the cleaning state according to an embodiment of the present invention;

[0021] Figure 4 yes Figure 1 Enlarged view of point A;

[0022] Figure 5 yes Figure 2 Enlarged view of point B.

[0023] Explanation of reference numerals in the attached diagram:

[0024] 10. Machine base; 101. Film material; 102. Guide roller; 20. First pressing mold assembly; 21. First cylinder; 22. First gravure roller; 23. Mounting frame; 24. First pressure roller; 25. Second pressure roller; 26. Tension adjusting roller; 27. Adjusting handle; 30. Second pressing mold assembly; 31. Second cylinder; 32. Second gravure roller; 33. Third pressure roller; 41. Vacuum adsorption roller; 42. Exhaust fan; 50. Auxiliary cleaning assembly; 51. Third cylinder; 52. First auxiliary cleaning roller; 53. Fourth cylinder; 54. Second auxiliary cleaning roller; 60. Slurry application device; 61. Slurry tank; 62. Feed pump; 63. Material box; 64. Scraper; 70. Drying oven. Detailed Implementation

[0025] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0028] Reference Figure 1-5 This document illustrates the specific structure of a preferred embodiment of the present invention. An aluminum-plastic film double-sided coating device includes a machine base (10). The machine base (10) is sequentially provided with a first coating mechanism, a vacuum adsorption roller (41), a second coating mechanism, and an oven (70) along the moving direction of the film material (101). The coating mechanism includes a front coating mechanism and a back coating mechanism. The first coating mechanism includes a first gravure roller (22) and a first pressing assembly (20) disposed above the first gravure roller (22). The first pressing assembly (20) includes a first cylinder (21) and a first pressing roller (24) and a second pressing roller (25) controlled by the first cylinder (21). A mounting bracket (23) is provided at the bottom end of the piston rod of the first cylinder (21). The first pressing roller (24) and the second pressing roller (25) are rotatably mounted on the mounting bracket (23). The first pressing roller (24) and the second pressing roller (25) are spaced apart. The coating mechanism includes a second gravure roller (32) and a second die assembly (30) located on one side of the second gravure roller (32). The second die assembly (30) includes a second cylinder (31) and a third die roller (33) controlled by the second cylinder (31). The third die roller (33) is rotatably mounted on the bottom end of the piston rod of the second cylinder (31). During coating, the film material (101) passes through the upper surface of the vacuum adsorption roller (41) and the upper surface of the second gravure roller (32) in sequence. The machine base (10) is also provided with a vacuum fan for evacuating the vacuum adsorption roller (41). The machine base (10) is also provided with a number of guide rollers (102) along the moving direction of the film material (101). By setting two coating mechanisms on the same equipment, the upper and lower surfaces of the film material (101) can be coated simultaneously. The coated film material (101) only needs to be dried once, which improves production efficiency and reduces production costs. By setting the first pressure roller (24) and the second pressure roller (25) at the bottom of the piston rod of the first cylinder (21), wrinkles are prevented after the film material is coated, improving coating quality and reducing production costs. By setting the vacuum adsorption roller (41), the film material (101) can be made to fit more closely to the second gravure roller (32) when the reverse side is coated, making the coating more uniform and improving coating quality.

[0029] Specifically, a tension adjustment mechanism is provided on one side of the first molding assembly (20). The tension adjustment mechanism includes a tension adjustment roller (26) and an adjustment handle (27) for controlling the tension adjustment roller (26). During coating, the film material (101) passes over the upper side of the tension adjustment roller (26).

[0030] More specifically, in the non-coating state, the first cylinder (21) controls the first pressure roller (24) and the second pressure roller (25) to move away from the first gravure roller (22). By adjusting the tension adjusting roller (26), the film material (101) is always attached to the lower surface of the first pressure roller (24) and the second pressure roller (25), so that the film material (101) moves away from the first gravure roller (22). The second cylinder (31) controls the third pressure roller (33) to rise, so that the film material (101) moves away from the second gravure roller (32).

[0031] More specifically, in the coating state, the first cylinder (21) controls the first pressure roller (24) and the second pressure roller (25) to approach the first gravure roller (22), so that the film material (101) adheres to the first gravure roller (22). The second cylinder (31) controls the third pressure roller (33) to descend, so that the film material (101) adheres to the second gravure roller (32). The exhaust fan (42) is started, and the vacuum adsorption roller (41) generates suction to adsorb the film material (101) onto the outer surface of the vacuum adsorption roller (41). It should be noted that the first pressure roller (24) and the second pressure roller (25) always maintain a distance from the first gravure roller (22). This can be understood as the film material (101) not being in contact with the first pressure roller (24), the second pressure roller (25), and the first gravure roller (22) at any point simultaneously.

[0032] Specifically, the first coating mechanism and the second coating mechanism further include a slurry application device (60). The slurry application device (60) includes a slurry tank (61), a material box (63), and a feeding pump (62) for conveying slurry from the slurry tank (61) to the material box (63). The material box (63) has an opening on one side, and scrapers (64) are provided on the upper and lower sides of the opening. The first gravure roller (22) and the second gravure roller (32) are respectively located on the opening side of the corresponding material box (63). During coating, the feeding pump (62) conveys the slurry in the slurry tank (61) to the material box (63). The outer surface of the first gravure roller (22) located at the opening of the material box (63) contacts the slurry in the material box (63). The scraper (64) scrapes off the excess slurry on the outer surface of the first gravure roller (22) to ensure the consistency of the slurry thickness adhering to the outer surface of the first gravure roller (22).

[0033] Specifically, the machine tool (10) is also provided with an auxiliary cleaning assembly (50). The auxiliary cleaning assembly (50) is located on the side of the second gravure roller (32) away from the second die assembly (30). The auxiliary cleaning assembly (50) includes a third cylinder (51), a fourth cylinder (53), a first auxiliary cleaning roller (52) controlled by the third cylinder (51), and a second auxiliary cleaning roller (54) controlled by the fourth cylinder (53). The first auxiliary cleaning roller (52) is rotatably connected to the bottom end of the piston rod of the third cylinder (51), and the second auxiliary cleaning roller (54) is rotatably connected to the bottom end of the piston rod of the fourth cylinder (53). The first auxiliary cleaning roller (52) is located on the side near the inlet of the oven (70), and the second auxiliary cleaning roller (54) is located between the first auxiliary cleaning roller (52) and the second gravure roller (32).

[0034] More specifically, in the cleaning state, the second cylinder (31) controls the third pressure roller (33) to rise, the third cylinder (51) controls the first auxiliary cleaning roller (52) to fall, and the fourth cylinder (53) controls the second auxiliary cleaning roller (54) to rise, so that the film material (101) moves away from the second gravure roller (32), while the film material (101) near the inlet of the oven (70) remains horizontal.

[0035] In summary, the beneficial effects of this utility model are as follows:

[0036] (1) By setting two coating mechanisms on the same equipment, the upper and lower surfaces of the membrane can be coated at the same time. The coated membrane only needs to be dried once, which improves production efficiency and reduces production costs.

[0037] (2) By setting the first pressure roller and the second pressure roller at the bottom of the piston rod of the first cylinder, wrinkles are prevented after the film is coated, the coating quality is improved and the production cost is reduced.

[0038] (3) By setting up a vacuum adsorption roller, the film material can be made to fit the second gravure roller better during reverse coating, making the coating more uniform and improving the coating quality.

[0039] (4) By setting up a cleaning mechanism to lift the film material away from the second gravure roller, it is easier to clean the second gravure roller.

[0040] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An apparatus for coating both sides of an aluminum-plastic film, comprising a machine table, characterized in that, The machine is provided with a first coating mechanism, a vacuum adsorption roller, a second coating mechanism and an oven in sequence along the moving direction of the film material, the coating mechanism includes a front coating mechanism and a back coating mechanism, the first coating mechanism includes a first gravure roller and a first die assembly arranged above the first gravure roller, the first die assembly includes a first air cylinder and a first pressure roller and a second pressure roller controlled by the first air cylinder, a mounting bracket is arranged at the bottom end of the piston rod of the first air cylinder, the first pressure roller and the second pressure roller are rotatably mounted on the mounting bracket, and the first pressure roller and the second pressure roller are arranged in a spaced and symmetrical manner on both sides of the axis of the first gravure roller, during coating, the film material passes through the lower surface of the first pressure roller, the upper surface of the first gravure roller and the lower surface of the second pressure roller in sequence, the second coating mechanism includes a second gravure roller and a second die assembly arranged on one side of the second gravure roller, the second die assembly includes a second air cylinder and a third pressure roller controlled by the second air cylinder, the third pressure roller is rotatably mounted at the bottom end of the piston rod of the second air cylinder, and during coating, the film material passes through the upper surface of the vacuum adsorption roller and the upper surface of the second gravure roller in sequence.

2. The apparatus for coating both sides of an aluminum laminated film according to claim 1, wherein A tension adjusting mechanism is arranged on one side of the first die assembly, the tension adjusting mechanism includes a tension adjusting roller and an adjusting handle for controlling the tension adjusting roller, and during coating, the film material passes through the upper side of the tension adjusting roller.

3. The apparatus for coating both sides of an aluminum laminated film according to claim 1, wherein The machine is also provided with an air exhaust fan for vacuumizing the vacuum adsorption roller.

4. The apparatus for coating both sides of an aluminum laminated film according to claim 1, wherein The first coating mechanism and the second coating mechanism also include a sizing device, the sizing device includes a sizing barrel, a cartridge and a feeding pump for conveying sizing from the sizing barrel to the cartridge, an opening is arranged on one side of the cartridge, scrapers are arranged on the upper and lower sides of the opening, and the first gravure roller and the second gravure roller are arranged on the opening side of the corresponding cartridge.

5. The apparatus for coating both sides of an aluminum laminated film according to claim 1, wherein The machine is also provided with an auxiliary cleaning assembly, the auxiliary cleaning assembly is arranged on the side of the second gravure roller away from the second die assembly, the auxiliary cleaning assembly includes a third air cylinder, a fourth air cylinder, a first auxiliary cleaning roller controlled by the third air cylinder and a second auxiliary cleaning roller controlled by the fourth air cylinder, the first auxiliary cleaning roller is rotatably connected to the bottom end of the piston rod of the third air cylinder, the second auxiliary cleaning roller is rotatably connected to the bottom end of the piston rod of the fourth air cylinder, the first auxiliary cleaning roller is arranged on the side close to the inlet of the oven, and the second auxiliary cleaning roller is arranged between the first auxiliary cleaning roller and the second gravure roller.

6. The apparatus for coating both sides of an aluminum laminated film according to claim 1, wherein The machine is also provided with a plurality of guide rollers along the moving direction of the film material.

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