Drying box for polyimide film production

Abstract

The utility model relates to a drying box for polyimide film production, which comprises a box body, a film inlet is arranged at the top of one side of the box body, a film outlet is arranged at the bottom of the other side of the box body, a plurality of rotating first guide rollers are arranged on the inner wall of one side of the box body, and a plurality of pairs of rotating second guide rollers are arranged on the other side of the box body. A thin film sequentially passes through the first guide rollers and the second guide rollers in the box body and is guided in a snakelike distribution mode, a single-face infrared plate is detachably installed on the top of the inner wall of the rear side of the box body, and a double-face infrared plate is detachably installed on the inner wall of the rear side of the box body between the upper-layer thin film and the lower-layer thin film guided by the pair of second guide rollers. A double-sided reflecting plate is detachably mounted on the inner wall of the rear side of the box body between the upper-layer film and the lower-layer film guided by the first guide roller, single-sided reflecting plates are arranged on the inner walls of the box body and the box cover, a plurality of rows of air outlets corresponding to the films are formed in the inner wall of the rear side of the box body, and air outlet pipes connected with the air outlets are arranged on the rear side of the box body. The film drying device is uniform in film heating, good in drying effect and convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to the production technical field of polyimide film especially relates to a drying box for polyimide film production. BACKGROUND

[0002] Polyimide film is a kind of high-performance polymer material, and is famous for its excellent thermal stability, mechanical strength, electrical insulation and chemical inertness. This kind of material has a wide application in multiple high-tech fields, such as aerospace, electronic appliances, microelectronic packaging, flexible display, etc. Polyimide film needs to be dried after being processed by drawing film processing, so as to be shaped.

[0003] A kind of drying device for polyimide film is disclosed in Chinese utility model patent with publication number CN220113818U, air is extracted into the inside of heating box to be heated by starting fan, hot air is transported by air guide pipe and shunt pipe, then input into the inside of shell by connecting pipe one, connecting pipe two and installation pipe, sprayed to the surface of film by diffusion cover, the double sides of film are dried simultaneously, so that the film drying is more uniform, the direction of film movement is conveniently turned by the setting of steering shaft, improve the time of film in the inside of shell, so as to improve the contact time of film and hot air stream, improve drying effect. The scheme adopts hot air drying mode, due to the influence of air flow, some areas may be overheated or insufficiently heated, temperature uniformity is poor, and hot air heated by resistance wire enters into shell by connecting pipe one and shunt pipe respectively, connecting pipe one is arranged in the inside of shell and path is short, shunt pipe is arranged outside shell and path is long, hot air heat is easily lost, leading to the temperature of film blowing is not the same, affecting product quality, and lacking corresponding exhaust measures, although hot air can take away part of steam in flowing process, but its effect is limited, if there is no effective exhaust system, steam may accumulate in some areas, leading to local overwetting, affecting drying effect. SUMMARY

[0004] The utility model aims at solving the insufficient of prior art, and provides a drying box for polyimide film production.

[0005] The utility model discloses a drying box for polyimide film production, which realizes the above-mentioned purposes by adopting the following technical scheme: a drying box for polyimide film production, comprising a box body, a box cover hinged to the front side of the box body, a film inlet provided at the top of one side of the box body, a film outlet provided at the bottom of the other side of the box body, a plurality of first guide rollers rotatably arranged on the inner wall of one side of the box body, a plurality of pairs of second guide rollers rotatably arranged on the inner wall of the other side of the box body, the film entering the box body through the film inlet and then passing out of the box body through the film outlet, the film sequentially passing through the first guide rollers and the second guide rollers and being distributed and guided in a serpentine shape inside the box body, a single-sided infrared plate detachably installed on the top of the inner wall at the back side of the box body, a double-sided infrared plate detachably installed on the inner wall at the back side of the box body between the upper and lower layers of films guided by the pair of second guide rollers, a double-sided reflecting plate detachably installed on the inner wall at the back side of the box body between the upper and lower layers of films guided by the first guide rollers, single-sided reflecting plates arranged on the inner walls of the box body and the box cover, a plurality of air outlets corresponding to each layer of film arranged on the inner wall at the back side of the box body, an air outlet pipe connected to the air outlets arranged on the inner wall at the back side of the box body, a gas collecting pipe connected to each row of air outlet pipes, an exhaust fan connected to the outlet of the gas collecting pipe, and a support frame connected to the gas collecting pipe and the exhaust fan arranged on the inner wall at the back side of the box body.

[0006] In particular, the first guide rollers are provided with first supports at the front and rear ends, and the first guide rollers are rotatably connected between the first supports, which are fixedly connected to the inner wall of the box body.

[0007] In particular, the second guide rollers are provided with second supports at the front and rear ends, and the second guide rollers are rotatably connected between the second supports, which are fixedly connected to the inner wall of the box body.

[0008] In particular, the diameter of the first guide rollers is greater than that of the second guide rollers.

[0009] In particular, the inner wall at the back side of the box body is provided with a plurality of pairs of sliding grooves, and the single-sided infrared plate, the double-sided infrared plate, and the double-sided reflecting plate are provided with sliding blocks on both sides, which are slidably inserted into the corresponding sliding grooves.

[0010] In particular, a temperature and humidity sensor is installed on the inner side of the box body, and a control panel and a control box are arranged on the outer side of the box body, and the temperature and humidity sensor and the control panel are respectively connected to the control box.

[0011] The utility model has the advantages of:

[0012] The first guide rollers and the second guide rollers are arranged to guide the film in a serpentine shape inside the box body, which can effectively increase the path length of the film in the drying box, thereby prolonging the residence time and ensuring that the film is fully dried.

[0013] The utility model discloses a drying box, including box body, the first guide roller, the second guide roller, single -sided infrared board, double -sided infrared board, double -sided reflection board, single -sided reflection board, exhaust port, exhaust pipe, gas collecting pipe and exhaust fan, its first guide roller is arranged on the box body, and the second guide roller is arranged on the box body, and single -sided infrared board is arranged on the box body, and double -sided infrared board is arranged on the box body, and double -sided reflection board is arranged on the box body, and single -sided reflection board is arranged on the box body, and exhaust port is arranged on the box body, and exhaust pipe is arranged on the box body, and gas collecting pipe is arranged on the box body, and exhaust fan is arranged on the box body, and the first guide roller is connected with the second guide roller, and the first guide roller is connected with single -sided infrared board, and the first guide roller is connected with double -sided infrared board, and the first guide roller is connected with double -sided reflection board, and the first guide roller is connected with single -sided reflection board, and the first guide roller is connected with exhaust port, and the first guide roller is connected with exhaust pipe, and the first guide roller is connected with gas collecting pipe, and the first guide roller is connected with exhaust fan.

[0014] The utility model discloses a drying box, including box body, the first guide roller, the second guide roller, single -sided infrared board, double -sided infrared board, double -sided reflection board, single -sided reflection board, exhaust port, exhaust pipe, gas collecting pipe and exhaust fan, its first guide roller is arranged on the box body, and the second guide roller is arranged on the box body, and single -sided infrared board is arranged on the box body, and double -sided infrared board is arranged on the box body, and double -sided reflection board is arranged on the box body, and single -sided reflection board is arranged on the box body, and exhaust port is arranged on the box body, and exhaust pipe is arranged on the box body, and gas collecting pipe is arranged on the box body, and exhaust fan is arranged on the box body, and the first guide roller is connected with the second guide roller, and the first guide roller is connected with single -sided infrared board, and the first guide roller is connected with double -sided infrared board, and the first guide roller is connected with double -sided reflection board, and the first guide roller is connected with single -sided reflection board, and the first guide roller is connected with exhaust port, and the first guide roller is connected with exhaust pipe, and the first guide roller is connected with gas collecting pipe, and the first guide roller is connected with exhaust fan. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is the structural schematic drawing of the utility model;

[0016] Fig. 2 It is the exhaust pipe, gas collecting pipe, exhaust fan position schematic drawing of the utility model;

[0017] In the drawing: 1 - box body;2 - film import;3 - film export;4 - first guide roller;5 - second guide roller;6 - single -sided infrared board;7 - double -sided infrared board;8 - double -sided reflection board;9 - single -sided reflection board;10 - exhaust port;11 - exhaust pipe;12 - gas collecting pipe;13 - exhaust fan;14 - support frame;15 - first support;16 - second support;17 - sliding slot;18 - sliding block;19 - control panel;20 - control box;

[0018] The utility model discloses a drying box, including box body, the first guide roller, the second guide roller, single -sided infrared board, double -sided infrared board, double -sided reflection board, single -sided reflection board, exhaust port, exhaust pipe, gas collecting pipe and exhaust fan, its first guide roller is arranged on the box body, and the second guide roller is arranged on the box body, and single -sided infrared board is arranged on the box body, and double -sided infrared board is arranged on the box body, and double -sided reflection board is arranged on the box body, and single -sided reflection board is arranged on the box body, and exhaust port is arranged on the box body, and exhaust pipe is arranged on the box body, and gas collecting pipe is arranged on the box body, and exhaust fan is arranged on the box body, and the first guide roller is connected with the second guide roller, and the first guide roller is connected with single -sided infrared board, and the first guide roller is connected with double -sided infrared board, and the first guide roller is connected with double -sided reflection board, and the first guide roller is connected with single -sided reflection board, and the first guide roller is connected with exhaust port, and the first guide roller is connected with exhaust pipe, and the first guide roller is connected with gas collecting pipe, and the first guide roller is connected with exhaust fan. DETAILED DESCRIPTION

[0019] The utility model discloses a drying box, including box body, the first guide roller, the second guide roller, single -sided infrared board, double -sided infrared board, double -sided reflection board, single -sided reflection board, exhaust port, exhaust pipe, gas collecting pipe and exhaust fan, its first guide roller is arranged on the box body, and the second guide roller is arranged on the box body, and single -sided infrared board is arranged on the box body, and double -sided infrared board is arranged on the box body, and double -sided reflection board is arranged on the box body, and single -sided reflection board is arranged on the box body, and exhaust port is arranged on the box body, and exhaust pipe is arranged on the box body, and gas collecting pipe is arranged on the box body, and exhaust fan is arranged on the box body, and the first guide roller is connected with the second guide roller, and the first guide roller is connected with single -sided infrared board, and the first guide roller is connected with double -sided infrared board, and the first guide roller is connected with double -sided reflection board, and the first guide roller is connected with single -sided reflection board, and the first guide roller is connected with exhaust port, and the first guide roller is connected with exhaust pipe, and the first guide roller is connected with gas collecting pipe, and the first guide roller is connected with exhaust fan.

[0020] As Figs. 1-2As shown, a kind of drying oven for polyimide film production, including box 1, hinged box cover is equipped with on the front side of box 1, the top of one side of box 1 is equipped with film inlet 2, the bottom of the other side is equipped with film outlet 3, the inner wall of one side of box 1 is equipped with several rotating first guide roller 4, the front and rear ends of first guide roller 4 are equipped with first support 15, first guide roller 4 is rotatably connected between first support 15, first support 15 is fixedly connected on the inner wall of box 1, the other side is equipped with several pairs of rotating second guide roller 5, the front and rear ends of second guide roller 5 are equipped with second support 16, second guide roller 5 is rotatably connected between second support 16, second support 16 is fixedly connected on the inner wall of box 1, the diameter of first guide roller 4 is greater than the diameter of second guide roller 5, film enters box 1 by film inlet 2 and passes through film outlet 3 and exits from box 1, film can be wound after exiting from box 1 by corresponding winding equipment, film is serpentine guided in box 1, can effectively increase the path length of film in drying oven, thereby prolonging its residence time, ensure that film is fully dried treatment;At the same time, through serpentine arrangement, longer drying path can be realized in limited space, effectively reduces the floor area of drying oven, saves factory space, reduces construction cost.

[0021] Film is sequentially guided through first guide roller 4, second guide roller 5 and is serpentine distributed in box 1, detachably mounted with single-sided infrared plate 6 on the top of rear inner wall of box 1, detachably mounted with double-sided infrared plate 7 on the rear inner wall of box 1 between upper and lower layers of film guided by a pair of second guide roller 5, detachably mounted with double-sided reflection plate 8 on the rear inner wall of box 1 between upper and lower layers of film guided by first guide roller 4, single-sided reflection plate 9 is arranged on the inner wall of box 1 and box cover, a plurality of pairs of sliding grooves 17 are arranged on the rear inner wall of box 1, sliding block 18 is arranged on the two sides of single-sided infrared plate 6, double-sided infrared plate 7 and double-sided reflection plate 8, sliding block 18 is slidably inserted into corresponding sliding groove 17;Infrared drying mode is adopted, infrared rays directly act on the surface of film, compared with hot air drying mode, heat loss can be reduced, and energy conversion efficiency can be improved;Infrared drying can provide more uniform heating distribution, which helps to keep product quality consistent;Infrared heating is usually faster than hot air heating, which can shorten drying time;At the same time, infrared drying can reduce mechanical stress on film because it does not need forced air flow;The arrangement of single-sided reflection plate 9 and double-sided reflection plate 8 can also improve energy utilization rate, reflect the infrared radiation not directly absorbed back, thereby increasing effective radiation and reducing heat loss.

[0022] The rear side inner wall of the box body 1 is provided with a plurality of rows of air outlets 10 corresponding to each layer of film, the rear side of the box body 1 is provided with air outlet pipes 11 connected with the air outlets 10, each row of air outlet pipes 11 is connected with a gas collecting pipe 12, the gas collecting pipe 12 is connected with an exhaust fan 13 at the outlet thereof, and the rear side of the box body 1 is provided with a support frame 14 connected with the gas collecting pipe 12 and the exhaust fan 13; by arranging an air outlet 10 and the corresponding gas collecting pipe 12 and exhaust fan 13 above each layer of film, the air outlet 10 of each row can discharge the steam above the corresponding layer of film in a targeted manner, which helps to more evenly control the humidity and temperature of each layer, and since each layer has an independent exhaust channel, the accumulation of steam in a certain layer can be effectively prevented, the product quality is not affected by the recondensation on the film surface, meanwhile, the timely discharge of steam can keep the air around each layer of film dry, and the infrared heating efficiency is improved; if a certain exhaust fan 13 fails, the exhaust effect of the drying box will not be affected, and the reliability is improved.

[0023] The temperature and humidity sensor is installed on the inner side of the box body 1, the control panel 19 and the control box 20 are arranged on the outer side of the box body 1, and the temperature and humidity sensor and the control panel 19 are connected with the control box 20 respectively; through the temperature and humidity sensor, the temperature and humidity in the drying box can be monitored in real time, and the heating and exhaust system can be adjusted according to actual requirements.

[0024] During the working of the utility model, the film enters the box body 1 through the film inlet 2, then passes through the first guide roller 4 and the second guide roller 5 in a serpentine manner, and then passes out of the box body 1 through the film outlet 3, and then is wound through the winding equipment, when the film moves in the box body 1, the single-sided infrared plate 6 and the double-sided infrared plate 7 start to work and dry the film, and the exhaust fan 13 works to discharge the evaporated water vapor.

[0025] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0026] In addition, the terms "first", "second" are only used for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0027] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] The present application has been described above in conjunction with the drawings, and it is obvious that the specific implementation of the present application is not limited by the above manner, as long as various improvements are made by using the method concept and technical solution of the present application, or directly applied to other occasions without improvement, all within the protection scope of the present application.

Claims

1. A drying oven for polyimide film production, comprising an oven body (1) having a lid hinged to the front side of the oven body (1), characterized in that, The box (1) is provided with a film inlet (2) on one side top, a film outlet (3) on the other side bottom, a plurality of rotating first guide rollers (4) on one side inner wall, a plurality of pairs of rotating second guide rollers (5) on the other side, the film enters the box (1) through the film inlet (2) and passes out of the box (1) through the film outlet (3), the film passes through the first guide roller (4) and the second guide roller (5) in turn and is distributed and guided in a serpentine shape inside the box (1), a single-sided infrared plate (6) is detachably installed on the top of the rear inner wall of the box (1), a double-sided infrared plate (7) is detachably installed on the rear inner wall of the box (1) between the upper and lower layers of films guided by the pair of second guide rollers (5), a double-sided reflection plate (8) is detachably installed on the rear inner wall of the box (1) between the upper and lower layers of films guided by the first guide roller (4), single-sided reflection plates (9) are arranged on the inner walls of the box (1) and the box cover, a plurality of air outlets (10) corresponding to each layer of film are arranged on the rear inner wall of the box (1), an air outlet pipe (11) connected with the air outlet (10) is arranged on the rear side of the box (1), each row of air outlet pipes (11) is connected with a gas collecting pipe (12), an exhaust fan (13) is connected with the outlet of the gas collecting pipe (12), and a support frame (14) connected with the gas collecting pipe (12) and the exhaust fan (13) is arranged on the rear side of the box (1).

2. The drying oven for polyimide film production according to claim 1, characterized by The first guide roller (4) is rotatably connected between the first supports (15) arranged at the front and rear ends of the first guide roller (4), and the first supports (15) are fixedly connected to the inner wall of the box (1).

3. The drying oven for polyimide film production according to claim 1, characterized by The second guide roller (5) is rotatably connected between the second supports (16) arranged at the front and rear ends of the second guide roller (5), and the second supports (16) are fixedly connected to the inner wall of the box (1).

4. The drying oven for polyimide film production according to claim 1, characterized by The diameter of the first guide roller (4) is greater than that of the second guide roller (5).

5. The drying oven for polyimide film production according to claim 1, characterized by The rear inner wall of the box (1) is provided with a plurality of pairs of sliding grooves (17), the single-sided infrared plate (6), the double-sided infrared plate (7) and the double-sided reflection plate (8) are provided with sliding blocks (18) on both sides, and the sliding blocks (18) are slidably inserted into the corresponding sliding grooves (17).

6. The drying oven for polyimide film production according to claim 1, characterized by A temperature and humidity sensor is mounted on the inner side of the box (1), a control panel (19) and a control box (20) are arranged on the outer side of the box (1), and the temperature and humidity sensor and the control panel (19) are respectively connected with the control box (20).

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