A corona treatment device for dielectric film

Abstract

The utility model discloses a corona treatment device for dielectric film, comprising a shell provided with a film inlet groove and a film outlet groove, a film inlet traction roller is provided outside the film inlet groove, a first auxiliary roller group, a first guide roller, a first corona roller connected with a first corona generator, a second corona roller connected with a second corona generator, a second guide roller and a second auxiliary roller group are provided in sequence in the inner cavity of the shell, the second auxiliary roller group is connected to a film collecting traction roller located outside the film outlet groove, the first corona generator and the second corona generator are both connected with an axial air duct with the same structure, the axial air duct is connected to an ozone decomposer through an exhaust fan provided with a ventilation pipe, the axial air duct is arranged along the axial direction of the first corona generator and a plurality of evenly arranged exhaust ducts are arranged at the lower end of the axial air duct. The utility model can prevent ozone from causing pollution to human body and environment, can evenly suck ozone in the corona area by suction, prevent the relatively concentrated strong wind force from having adverse effects on the film, and improve the quality of corona treatment.

Description

Technical Field

[0001] The utility model relates to the technical field of corona treatment devices, in particular to a corona treatment device for a dielectric film. Background Art

[0002] Dielectric-plated products (such as aluminum-plated films, zinc sulfide-plated films, etc.) have been increasingly favored by the packaging market for many years due to their transparent and beautiful texture. When producing thin film products, the dielectric is directly plated on the coating surface. Due to the poor adhesion of the dielectric film layer, it is easy to cause quality problems such as peeling, shedding and poor bonding strength of the dielectric layer. The dielectric film corona treatment technology can effectively improve such problems. Corona treatment is a very important processing technology in thin film processing. In layman's terms, it is to use voltage to perform electric shock treatment on the dielectric film on the surface of the film to increase the surface tension of the dielectric film and enhance the adhesion of the dielectric film layer to facilitate subsequent processing of the film.

[0003] However, there are some problems in the process of corona treatment of dielectric film. During the corona treatment of dielectric film, the corona will produce a large amount of ozone. Although an appropriate amount of ozone can be beneficial to the corona of the film, too much ozone is a harmful gas. Direct emission of the gas can easily cause pollution to the human body and the surrounding environment, affecting the environmental friendliness of the production process. At this time, if a high-power fan is used to extract the ozone generated in the corona, it cannot purify the harmful gas. At the same time, the relatively concentrated strong wind force can easily cause the film to shake, which is not conducive to the corona treatment of the dielectric film, and may even cause the corona quality of the dielectric film to be poor. Utility Model Content

[0004] In order to solve the technical problems in the prior art that the harmful ozone gas generated during the corona treatment process is easy to pollute the human body and the surrounding environment, affecting the environmental protection of the production process, and the relatively concentrated strong wind force is easy to cause the film to shake, which is not conducive to the corona treatment of the dielectric film, the utility model provides the following technical solutions.

[0005] The utility model discloses a corona treatment device for a dielectric film, comprising a shell body provided with a film feed slot and a film outlet slot on both sides of a bracket, a film feed traction roller is provided on the outer side of the film feed slot, a first auxiliary roller group, a first guide roller, a first corona roller connected to a first corona generator, a second corona roller connected to a second corona generator, a second guide roller and a second auxiliary roller group are sequentially provided in an inner cavity of the shell body, the second auxiliary roller group is connected to a film collecting traction roller located on the outer side of the film outlet slot, the first corona generator and the second corona generator are both connected to an axial air duct with the same structure, the axial air duct is connected to an ozone decomposer located on one side of the shell body through an exhaust fan provided with a ventilation pipe, the axial air duct is arranged along the axial direction of the first corona generator and a plurality of evenly arranged exhaust pipes are arranged at the lower end of the axial air duct, so as to evenly draw ozone in the corona area.

[0006] As a further technical solution, there are two axial air ducts, which are arranged on both sides of the first corona generator, and the two axial air ducts are connected by a connecting pipe, and the connecting pipe is connected to the ventilation pipe.

[0007] As a further technical solution, a fixing plate is provided on the upper part of the shell, a telescopic cylinder is provided on the upper part of the fixing plate, and the output end of the telescopic cylinder is connected to the first corona generator through a mounting plate to adjust the distance between the first corona generator and the first corona roller.

[0008] As a further technical solution, a corrugated air duct connected to the ventilation pipe is provided under the fixed plate, and the corrugated air duct is connected to the axial air duct.

[0009] As a further technical solution, the axial air duct is connected to the mounting plate or both sides of the first corona generator through a fixing strip.

[0010] As a further technical solution, the air outlet of the air exhaust pipe is arranged toward the direction of the film between the first corona roller and the first corona generator.

[0011] The utility model has the beneficial effect that the corona treatment device of the utility model is provided with an axial air duct at the first corona generator and the second corona generator, the axial air duct is arranged along the axial direction of the first corona generator and the second corona generator, and a plurality of evenly arranged exhaust pipes are arranged at the lower end of the axial air duct, and the exhaust port of the exhaust pipe is arranged toward the film direction between the corona roller and the corona generator, which can facilitate the uniform extraction of ozone in the corona area, and the ozone after extraction is sent to the ozone decomposer for decomposition, which can prevent ozone from causing pollution to the human body and the surrounding environment. At the same time, the plurality of exhaust pipes of the axial air duct can evenly extract ozone in the corona area, and the wind force is relatively dispersed and even during extraction, which reduces the suction force on the dielectric film and the film, prevents the conventional relatively concentrated strong wind force from having adverse effects on the film, and improves the corona treatment quality of the dielectric film. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the external structure of the corona treatment device for dielectric film of the utility model;

[0013] Figure 2 It is a partial cutaway schematic diagram of a shell of a corona treatment device for a dielectric film of the utility model;

[0014] Figure 3 This is a connection diagram of the first corona generator of the corona treatment device for dielectric film of the utility model;

[0015] Figure 4 This is a schematic diagram of the axial air duct connection of the corona treatment device for dielectric membranes of the utility model;

[0016] In the figure: 1-shell; 101-film inlet slot; 102-film outlet slot; 2-film inlet traction roller; 3-first auxiliary roller group; 4-first guide roller; 5-first corona roller; 6-first corona generator; 7-second corona roller; 8-second corona generator; 9-second guide roller; 10-second auxiliary roller group; 11-film collection traction roller; 12-fixed plate; 13-telescopic cylinder; 14-mounting plate; 15-guide sleeve; 16-fixed strip; 17-axial air duct; 18-exhaust duct; 19-connecting pipe; 20-corrugated air duct; 21-ventilation duct; 22-exhaust fan; 23-ozone decomposer. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model 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 utility model and are not used to limit the utility model. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0018] In the description of the present invention, it should be understood that the terms "upper", "lower" and "both sides" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0019] like Figure 1 and Figure 2 As shown, the utility model is a corona treatment device for dielectric film, including a shell 1 provided with a film feed slot 101 and a film outlet slot 102 on the front and rear sides of a bracket, and the bracket at the bottom of the shell 1 is no longer shown. The shell 1 has a hollow inner cavity, and a film feed traction roller 2 is provided on the outer side of the film feed slot 101. The inner cavity of the shell 1 is provided with a first auxiliary roller group 3, a first guide roller 4, a first corona roller 5 connected to a first corona generator 6, a second corona roller 7 connected to a second corona generator 8, a second guide roller 9, and a second auxiliary roller group 10 in sequence. The second auxiliary roller group 10 is connected to a film collection traction roller 11 located on the outer side of the film outlet slot 102, and the first corona generator 6 and the second corona generator 8 perform corona treatment on the front and back sides of the film respectively. The above-mentioned components and the unwinding and rewinding components and driving components not shown in the figure all adopt the existing technology, which will not be repeated here.

[0020] like Figure 2 and Figure 3As shown, in a preferred embodiment, the first corona generator 6 and the second corona generator 8 are both connected to an axial air duct 17 of the same structure, the axial air duct 17 is a hollow circular tube structure, the axial air duct 17 is arranged axially along the first corona generator 6, and a plurality of evenly arranged exhaust pipes 18 are provided at the lower end of the axial air duct 17, the exhaust ports of the exhaust pipes 18 are arranged toward the film direction between the first corona roller 5 and the first corona generator 6, so as to evenly draw ozone in the corona area. The axial air duct 17, exhaust pipe 18 and other components connected to the second corona generator 8 and the first corona generator 6 have the same structure, therefore, only the axial air duct 17, exhaust pipe 18 and other components at the first corona generator 6 are described below,

[0021] In a preferred embodiment, the axial air duct 17 is connected to the ozone decomposer 23 located on one side of the housing 1 through an exhaust fan 22 provided with a ventilation pipe 21. Preferably, there are two axial air ducts 17, which are relatively arranged on both sides of the first corona generator 6, and the two axial air ducts 17 are connected by a connecting pipe 19, and the connecting pipe 19 is connected to the ventilation pipe 21. Ozone generated during corona discharge flows from the exhaust pipe 18 into the axial air duct 17 and the connecting pipe 19, and then flows from the connecting pipe 19 through the ventilation pipe 21 into the ozone decomposer 23 for treatment.

[0022] like Figure 3 and Figure 4 As shown, in a preferred embodiment, a fixing plate 12 is provided on the upper part of the housing 1, a telescopic cylinder 13 is provided on the upper part of the fixing plate 12, a mounting plate 14 is connected to the output end of the telescopic cylinder 13, the mounting plate 14 is connected to the first corona generator 6 by bolts, and the axial air duct 17 can be connected to the mounting plate 14 or both sides of the first corona generator 6 by a fixing strip 16. Two guide sleeves 15 are also provided at the lower part of the fixing plate 12, and the guide sleeves 15 are connected to the upper part of the first corona generator 6. Under the telescopic action of the telescopic cylinder 13, the distance between the first corona generator 6 and the first corona roller 5 can be adjusted to control the corona strength of the dielectric film.

[0023] In order to cooperate with the adjustment of the first corona generator 6 by the telescopic cylinder 13, a corrugated air duct 20 connected to the ventilation pipe 21 is provided below the fixed plate 12, and the corrugated air duct 20 is connected to the axial air duct 17 or the connecting pipe 19. Under the action of the exhaust fan 22, the ozone generated during corona discharge flows from the exhaust pipe 18 into the axial air duct 17 and the connecting pipe 19, and then flows from the connecting pipe 19 through the corrugated air duct 20 and the ventilation pipe 21 into the ozone decomposer 23 for treatment.

[0024] The preferred specific implementation modes and embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above implementation modes and embodiments, and various changes or equivalent substitutions can be made within the knowledge scope of those skilled in the art without departing from the concept of the utility model. Therefore, the utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the utility model.

Claims

1. A corona treatment device for dielectric film, comprising a shell (1) arranged on a bracket and provided with a film feed groove (101) and a film outlet groove (102) on both sides, a film feed traction roller (2) being provided on the outer side of the film feed groove (101), and an inner cavity of the shell (1) being provided with a first auxiliary roller group (3), a first guide roller (4), a first corona roller (5) connected to a first corona generator (6), a second corona roller (7) connected to a second corona generator (8), a second guide roller (9) and a second auxiliary roller group (10) in sequence, wherein the second auxiliary roller group (10) is connected to a film collection traction roller (11) located on the outer side of the film outlet groove (102), characterized in that: The first corona generator (6) and the second corona generator (8) are both connected to an axial air duct (17) of the same structure; the axial air duct (17) is connected to an ozone decomposer (23) located on one side of the housing (1) via an exhaust fan (22) provided with a ventilation pipe (21); the axial air duct (17) is arranged along the axial direction of the first corona generator (6) and a plurality of evenly arranged exhaust pipes (18) are provided at the lower end of the axial air duct (17) so as to evenly draw ozone in the corona area.

2. The corona treatment device for dielectric film according to claim 1, characterized in that: There are two axial air ducts (17), which are arranged oppositely on both sides of the first corona generator (6), and the two axial air ducts (17) are connected by a connecting pipe (19), and the connecting pipe (19) is connected to the ventilation pipe (21).

3. The corona treatment device for dielectric film according to claim 1, characterized in that: A fixing plate (12) is provided on the upper part of the shell (1), a telescopic cylinder (13) is provided on the upper part of the fixing plate (12), and an output end of the telescopic cylinder (13) is connected to the first corona generator (6) through a mounting plate (14) so ​​as to adjust the distance between the first corona generator (6) and the first corona roller (5).

4. The corona treatment device for dielectric film according to claim 3, characterized in that: A corrugated air duct (20) connected to the ventilation pipe (21) is provided below the fixed plate (12), and the corrugated air duct (20) is connected to the axial air duct (17).

5. The corona treatment device for dielectric film according to claim 3, characterized in that: The axial air duct (17) is connected to the mounting plate (14) or both sides of the first corona generator (6) via a fixing strip (16).

6. The corona treatment device for dielectric film according to claim 1, characterized in that: The air outlet of the air exhaust pipe (18) is arranged toward the direction of the film between the first corona roller (5) and the first corona generator (6).

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