Drying device for polyimide film production

Abstract

The utility model belongs to the technical field of polyimide film production equipment, and particularly relates to a drying device for polyimide film production, which comprises a flat plate, and a lower drying plate located below a plurality of conveying rollers is fixedly connected between two supporting plates through a support. An upper drying plate located above the multiple conveying rollers is fixedly connected between the two supporting plates through a support, a fixing plate is fixedly connected to the upper end faces of the two supporting plates, a steam processor is installed on the upper end face of the fixing plate, and a flow guide cover communicated with the steam processor is fixedly connected to the lower end face of the fixing plate. According to the utility model, the polyimide film can be uniformly heated and dried, the drying is more sufficient, and the polyimide film can be timely cooled and is not easy to deform.

Description

Technical Field

[0001] The utility model belongs to the technical field of polyimide film production equipment, and particularly relates to a drying device for polyimide film production. Background Art

[0002] Polyimide film is a high-temperature-resistant insulating material for electric motors and electrical appliances, which is yellow and transparent, and has good high-temperature resistance, radiation resistance, chemical corrosion resistance and electrical insulation performance. It is particularly suitable for use as a flexible printed circuit board substrate and various high-temperature-resistant insulating materials for electric motors and electrical appliances. A drying device is required during the production process of polyimide film.

[0003] When the existing drying device for polyimide film production is in use, it usually can only perform hot air drying on one side of the film, resulting in uneven heating and insufficient drying of the polyimide film, which easily causes bubbles to form inside the polyimide film and increases the unqualified rate of products; and because the temperature of the dried polyimide film is relatively high, it is easy to deform during the process of being pulled out by traction, thereby damaging the film. Summary of the Invention

[0004] To solve the problems raised in the above background art, the utility model provides a drying device for polyimide film production, which can uniformly heat and dry the polyimide film, dry it more fully, and can be cooled in time and is not easy to deform.

[0005] The utility model is realized as follows: A drying device for polyimide film production includes a flat plate. Two symmetrically distributed support plates are fixedly connected to the upper end surface of the flat plate. Two rotating shafts distributed up and down are rotatably connected between the two support plates. Traction rollers are fixedly connected to the outer walls of the two rotating shafts.

[0006] A plurality of equally spaced conveying rollers located behind the traction rollers are rotatably connected between the two support plates. A lower drying plate located below the plurality of conveying rollers is fixedly connected between the two support plates through a bracket. An upper drying plate located above the plurality of conveying rollers is fixedly connected between the two support plates through a bracket. A fixing plate is fixedly connected to the upper end surfaces of the two support plates. A steam treatment machine is installed on the upper end surface of the fixing plate. A diversion cover communicated with the steam treatment machine is fixedly connected to the lower end surface of the fixing plate.

[0007] A conveyor is installed between the two support plates. A plurality of equally spaced support bars are fixedly connected to the outer wall of the conveyor belt of the conveyor. Ventilation slots located on the left and right sides of the conveyor belt are opened on the side walls of the two support plates. Heat dissipation fans are installed inside the ventilation slots.

[0008] In order to make two gears mesh and rotate, as an optimization of the drying device for polyimide film production of the present utility model, one end of each of the two rotating shafts extends to the outer wall of the support plate and is fixedly connected with a gear, and the two gears mesh with each other. A driving motor is installed on the side wall of the support plate through a bracket, and the output end of the driving motor is fixedly connected with the gear.

[0009] In order to allow water vapor to enter the diversion cover, as an optimization of the drying device for polyimide film production of the present utility model, both the lower drying plate and the upper drying plate are composed of a plurality of heating rods evenly distributed at equal intervals.

[0010] In order to fully inhale water vapor, as an optimization of the drying device for polyimide film production of the present utility model, the diversion cover is arranged directly above the upper drying plate, and the cross-sectional area of the diversion cover is the same as the size of the upper drying plate.

[0011] In order to increase the friction force, as an optimization of the drying device for polyimide film production of the present utility model, the outer wall of the support bar is wrapped with an anti-slip rubber sheet.

[0012] In order to facilitate operation, as an optimization of the drying device for polyimide film production of the present utility model, a control switch is fixedly connected to the side wall of the support plate.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] The present utility model drives the polyimide film to move backward through two traction rollers, supports the polyimide film through conveying rollers, heats the polyimide film simultaneously through the lower drying plate and the upper drying plate to make the polyimide film heat more evenly, enables the moisture on the polyimide film to evaporate quickly, starts the steam treatment machine, and allows water vapor to enter the steam treatment machine through the diversion cover, so that the polyimide film is dried more thoroughly.

[0015] The present utility model drives the polyimide film to move backward through a conveyor belt, creates a gap below the polyimide film through support bars, drives the air flow between two ventilation grooves by rotating two cooling fans, accelerates the gas flow rate above and below the polyimide film, further enables the moisture on the surface of the polyimide film to evaporate, and at the same time takes away the heat of the polyimide film, quickly cools the dried polyimide film, and prevents the polyimide film from deforming. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Schematic three-dimensional structure diagram of the present utility model;

[0018] Figure 2 Schematic partial cross-sectional three-dimensional structure diagram of the present utility model;

[0019] Figure 3 Schematic front view structure diagram of the present utility model.

[0020] In the figure: 1, flat plate; 2, support plate; 3, rotating shaft; 4, traction roller; 5, gear; 6, drive motor; 7, conveying roller; 8, lower drying plate; 9, upper drying plate; 10, fixing plate; 11, steam processor; 12, guide hood; 13, ventilation slot; 14, cooling fan; 15, conveyor belt; 16, support bar; 17, control switch. Detailed implementation manners

[0021] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the following further details the present utility model in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation of the present utility model. In addition, in the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0023] Please refer to Figures 1-3 , a drying device for polyimide film production, including a flat plate 1, two symmetrically distributed support plates 2 are fixedly connected to the upper end surface of the flat plate 1, two vertically distributed rotating shafts 3 are rotatably connected between the two support plates 2, and traction rollers 4 are fixedly connected to the outer walls of the two rotating shafts 3;

[0024] A plurality of conveying rollers 7 which are rotatably connected between two support plates 2 and are equidistantly distributed and located behind the traction rollers 4, a lower drying plate 8 located below the plurality of conveying rollers 7 is fixedly connected between the two support plates 2 through a bracket, an upper drying plate 9 located above the plurality of conveying rollers 7 is fixedly connected between the two support plates 2 through a bracket, a fixing plate 10 is fixedly connected to the upper end surfaces of the two support plates 2, a steam processor 11 is installed on the upper end surface of the fixing plate 10, and a flow guide cover 12 communicated with the steam processor 11 is fixedly connected to the lower end surface of the fixing plate 10;

[0025] A conveyor is installed between the two support plates 2. A plurality of support strips 16 which are equidistantly distributed are fixedly connected to the outer wall of the conveyor belt 15 of the conveyor. Ventilation grooves 13 located on the left and right sides of the conveyor belt 15 are formed in the side walls of the two support plates 2, and heat dissipation fans 14 are installed inside the ventilation grooves 13.

[0026] In this embodiment: One end of the polyimide film is placed between the two traction rollers 4. The two traction rollers 4 drive the polyimide film to move backward. The conveying rollers 7 support the polyimide film. The lower drying plate 8 and the upper drying plate 9 are heated simultaneously to make the polyimide film receive heat more evenly, so that the moisture on the polyimide film evaporates quickly. The steam processor 11 is started, and the water vapor enters the steam processor 11 through the flow guide cover 12, so that the polyimide film is dried more thoroughly;

[0027] The conveyor belt 15 drives the polyimide film to move backward. The support strips 16 create gaps below the polyimide film. The rotation of the two heat dissipation fans 14 drives the air flow between the two ventilation grooves 13, so that the gas flow rate above and below the polyimide film is increased, further enabling the moisture on the surface of the polyimide film to evaporate, and at the same time taking away the heat of the polyimide film, so that the dried polyimide film is quickly cooled to prevent the polyimide film from deforming.

[0028] As a technical optimization scheme of the present utility model, one ends of the two rotating shafts 3 both extend to the outer walls of the support plates 2 and are fixedly connected with gears 5. The two gears 5 are meshed with each other. A driving motor 6 is installed on the side wall of the support plate 2 through a bracket, and the output end of the driving motor 6 is fixedly connected with the gear 5.

[0029] In this embodiment: The output end of the driving motor 6 drives the gear 5 to rotate. Since the two gears 5 are meshed with each other, the two rotating shafts 3 drive the traction rollers 4 to rotate relatively, which is convenient for pulling the polyimide film.

[0030] As a technical optimization scheme of the present utility model, both the lower drying plate 8 and the upper drying plate 9 are composed of a plurality of equidistantly distributed heating rods.

[0031] In this embodiment: The lower drying plate 8 and the upper drying plate 9 are composed of a plurality of heating rods evenly distributed at equal intervals, so that the heating is more uniform, and at the same time, water vapor can enter the diversion cover 12 from the gap.

[0032] As a technical optimization scheme of the present utility model, the diversion cover 12 is arranged directly above the upper drying plate 9, and the cross-sectional area of the diversion cover 12 is the same as the size of the upper drying plate 9.

[0033] In this embodiment: Through the diversion cover 12, water vapor can fully enter the interior of the vapor processor 11.

[0034] As a technical optimization scheme of the present utility model, the outer wall of the support bar 16 is wrapped with an anti-slip rubber sheet.

[0035] In this embodiment: Wrapping the outer wall of the support bar 16 with an anti-slip rubber sheet can increase the friction force of the support bar 16 on the polyimide film, so as to better drive the polyimide film to move.

[0036] As a technical optimization scheme of the present utility model, a control switch 17 is fixedly connected to the side wall of the support plate 2.

[0037] In this embodiment: The drive motor 6, the lower drying plate 8, the upper drying plate 9, the vapor processor 11, the cooling fan 14 and the conveyor belt 15 are all electrically connected to the control switch 17. By driving the present utility model through the control switch 17, the operation is more convenient.

[0038] The working principle and usage process of the present utility model: When the present utility model is used, first place one end of the polyimide film to be dried between the two traction rollers 4. The output end of the drive motor 6 drives the gear 5 to rotate. Since the two gears 5 are meshed with each other, the two rotating shafts 3 can drive the traction rollers 4 to rotate relatively, and the polyimide film is driven to move backward by the two traction rollers 4;

[0039] Then, the polyimide film is supported by the conveying roller 7, and the polyimide film is heated more evenly by heating the lower drying plate 8 and the upper drying plate 9 at the same time, so that the moisture on the polyimide film evaporates quickly. Start the vapor processor 11, so that the water vapor enters the vapor processor 11 through the diversion cover 12, so that the polyimide film is dried more thoroughly;

[0040] Next, the polyimide film is driven to move backward by the conveyor belt 15. The support bar 16 makes a gap under the polyimide film. The rotation of the two cooling fans 14 drives the air flow between the two ventilation grooves 13, so that the gas flow rate above and below the polyimide film is accelerated, further evaporating the moisture on the surface of the polyimide film, and at the same time taking away the heat of the polyimide film, so that the dried polyimide film is quickly cooled to prevent the polyimide film from deforming.

[0041] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A drying device for the production of polyimide films, comprising a flat plate (1), characterized in that: Two symmetrically distributed support plates (2) are fixedly connected to the upper end surface of the flat plate (1). Two vertically distributed rotating shafts (3) are rotatably connected between the two support plates (2). Traction rollers (4) are fixedly connected to the outer walls of the two rotating shafts (3). A plurality of equidistantly distributed conveying rollers (7) are rotatably connected between the two support plates (2) and are located behind the traction rollers (4). A lower drying plate (8) located below the plurality of conveying rollers (7) is fixedly connected between the two support plates (2) through a bracket. An upper drying plate (9) located above the plurality of conveying rollers (7) is fixedly connected between the two support plates (2) through a bracket. A fixing plate (10) is fixedly connected to the upper end surfaces of the two support plates (2). A steam treatment machine (11) is installed on the upper end surface of the fixing plate (10). A flow guide cover (12) communicated with the steam treatment machine (11) is fixedly connected to the lower end surface of the fixing plate (10). A conveyor is installed between the two support plates (2). A plurality of equidistantly distributed support bars (16) are fixedly connected to the outer wall of the conveyor belt (15) of the conveyor. Ventilation grooves (13) located on the left and right sides of the conveyor belt (15) are formed in the side walls of the two support plates (2). Heat dissipation fans (14) are installed inside the ventilation grooves (13).

2. The drying device for producing polyimide film according to claim 1, characterized in that: One end of each of the two rotating shafts (3) extends to the outer wall of the support plate (2) and is fixedly connected with a gear (5). The two gears (5) are meshed with each other. A driving motor (6) is installed on the side wall of the support plate (2) through a bracket. The output end of the driving motor (6) is fixedly connected with the gear (5).

3. The drying device for producing polyimide film according to claim 1, characterized in that: Both the lower drying plate (8) and the upper drying plate (9) are composed of a plurality of equidistantly distributed heating rods.

4. A drying device for producing polyimide films according to claim 1, characterized in that: The flow guide cover (12) is arranged directly above the upper drying plate (9), and the cross-sectional area of the flow guide cover (12) is the same as the size of the upper drying plate (9).

5. The drying device for producing polyimide film according to claim 1, characterized in that: The outer wall of the support bar (16) is wrapped with an anti-slip rubber sheet.

6. The drying device for producing polyimide film according to claim 1, characterized in that: A control switch (17) is fixedly connected to the side wall of the support plate (2).

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