TWI765796B - Film drying oven - Google Patents

Abstract

An film drying oven is disclosed. The film drying oven includes a fixed oven body and a movable oven body. A first drying side of the fixed oven body includes a first air knife, at least one first heating zone, a first buffer zone, a plurality of first communication interfaces, and a plurality of first air ventilation zones. A second drying side of the movable oven body includes a second air knife, at least one second heating zone, a second buffer zone, a plurality of second communication interfaces, and a plurality of second ventilation zones. Since internal air ducts are set up in the fixed oven body and the movable oven body, the overall thickness of the film drying oven can be reduced, and the structural design of the heating drying oven can be optimized.

Description

Thin film drying furnace

The present invention relates to a drying furnace, in particular to a film drying furnace for drying films, such as metal films, plastic films and the like.

With the advancement of industrial processes, the size of many components will become thin and short. This trend will reduce the appearance size of the final product, allowing people to enjoy a more free and spacious space. This is especially true for electronics. Among these upstream components, thin-film products are unique. Film products, such as copper foil, aluminum foil, plastic film, etc., are usually stored and transported in roll form after production is completed. When the downstream end is to be used, take out the required amount and cut it. However, before these film-based products are formed into a roll-like structure, they are usually in the back-end process of consistent production. At this time, the surface of the film often has some residual solvents, such as water, from the previous processing, which needs to be removed. Generally speaking, the removal of solvent is usually carried out by heating, that is, the film is passed through a hot furnace, and the evaporated solvent is separated from the surface of the film after being grilled at high temperature, and then it can be dissipated into the outside air with the ventilation system.

The existing heating and drying furnaces are not small in size. If the design of the ventilation duct is added, the overall volume is very considerable. In addition to occupying factory workspace, these heating and drying furnaces are also inconvenient for maintenance. Therefore, it is necessary to optimize the structural design of the heating and drying furnace in order to solve these inconveniences.

This text extracts and compiles certain features of the invention. Other features will be disclosed in subsequent paragraphs. It is intended to cover various modifications and similar arrangements within the spirit and scope of the appended claims.

In order to optimize the structural design of the heating and drying furnace, the present invention proposes a thin-film drying furnace, comprising: a fixed furnace body, which is a plate-shaped shell, including an inner side and a first drying side, and the inner side forms a plurality of a ventilation port, the first drying side includes: a first air knife, installed under the first drying side, connected to a first ventilation port with an internal air duct, and the outer part to be received through the first ventilation port The hot air is blown toward a film to be dried at an adjustable angle; at least one first heating zone is installed above the first air knife and has a plurality of heating devices for heating and drying the film to be dried. , the backs of the heating devices are respectively connected with a plurality of second vents through a plurality of internal air ducts, so as to cool the back of the heating device with the external cold air received through the second vents; a first buffer zone is installed in the Above at least one first heating zone, there are a plurality of blowing nozzles, and these blowing nozzles are respectively connected to a plurality of third ventilation openings through a plurality of internal air ducts, and use the external hot air received through the third ventilation openings to pass through the air. The film to be dried is cooled and dried; and a plurality of first communication ports are opened on the periphery of the two sides of the fixed furnace body, and each first communication port is connected with a corresponding vent through an internal air duct; and a movable The furnace body, which is a plate-shaped shell, can be moved relative to the fixed furnace body to open and close the film drying furnace, and includes an outer side and a second drying side, and the second drying side includes: a plurality of second communication ports , open on the periphery of the two sides of the movable furnace body, the position of each second communication interface corresponds to a first communication interface, and can be detachably closely connected with the first communication interface; a second air knife is installed on the first communication interface. Below the two drying sides, an internal air duct is connected to the first ventilation port through a second communication port and the corresponding first communication port, and the external hot air received through the first ventilation port is blown toward the angle of adjustment. the film to be dried; at least one second heating zone is installed above the second air knife, and has a plurality of heating devices for heating and drying the film to be dried passing through, and the backs of the heating devices are composed of a plurality of heating devices. Each of the internal air ducts is connected to a plurality of second ventilation ports with the corresponding first communication ports through the second communication ports, respectively. openings to cool the back of the heating device with external cold air received through the second ventilation openings; and a second buffer zone installed above the at least one second heating zone, having a plurality of blowing nozzles, the blowing nozzles Connect a plurality of third ventilation openings with a plurality of internal air ducts through the second communication interface and the corresponding first communication interface respectively, and use the external hot air received through these third ventilation openings to cool the passing film to be dried. drying. When the fixed furnace body is combined with the movable furnace body, a flat channel is left between the first drying side and the second drying side for the film to be dried to enter from below the film drying furnace, and the Leave above.

The present invention also provides another film drying furnace, comprising: a fixed furnace body, which is a plate-shaped shell, including an inner side and a first drying side, the inner side is formed with a plurality of ventilation openings, and the first drying side includes : A first air knife, installed under the first drying side, connected to a first ventilation port with an internal air duct, and blowing the external hot air received through the first ventilation port to a drying oven at an adjustable angle Dry film; at least one first heating zone, installed above the first air knife, has a plurality of heating devices for heating and drying the passing film to be dried, the back of these heating devices is provided with a plurality of internal air The channels are respectively connected with a plurality of fans located on the inner side, so as to introduce external cold air to cool the back of the heating device by the fans; a first buffer zone is installed above the at least one first heating zone and has a plurality of blowing nozzles , the blowing nozzles are respectively connected to a plurality of third vents through a plurality of internal air ducts, and use the external hot air received through the third vents to cool and dry the passing film to be dried; and a plurality of first A communication interface is opened on the periphery of the two sides of the fixed furnace body, and each first communication interface is connected with a corresponding ventilation port through an internal air duct; and a movable furnace body, which is a plate-shaped shell and can be fixed relative to the The furnace body moves to open and close the film drying furnace, which includes an outer side and a second drying side. The second drying side includes: a plurality of second communication ports, which are opened on the periphery of the two sides of the movable furnace body. The position of the second communication interface corresponds to a first communication interface, and can be closely connected with the first communication interface in a detachable manner; a second air knife is installed under the second drying side, and an internal air duct passes through a The second communication interface is connected to the first ventilation port with the corresponding first communication port, and the external hot air received through the first ventilation port is blown toward the film to be dried in an adjustable angle; at least one second heating zone, It is installed above the second air knife and has a plurality of heating devices for heating the passing film to be dried. Heating and drying, the backs of the heating devices are respectively connected with a plurality of fans located on the outer side by a plurality of internal air ducts, so as to cool the back of the heating device by introducing external cold air through the fans; and a second buffer zone, installed Above the at least one second heating zone, there are a plurality of blowing nozzles, and these blowing nozzles are connected with a plurality of third ventilation ports through the second communication interface and the corresponding first communication interface respectively with a plurality of internal air ducts, so as to The external hot air received through the third vents cools and dries the passing film to be dried. When the fixed furnace body is combined with the movable furnace body, a flat channel is left between the first drying side and the second drying side for the film to be dried to enter from below the film drying furnace, and the Leave above.

According to the present invention, beside the first heating zone, between the first heating zone and the first buffer zone, and at the end of the first buffer zone, further include a first air extraction area, and each first air extraction area includes an air extraction port, The air exhaust port is respectively connected to a plurality of fourth ventilation ports through a plurality of internal air channels, and the hot air in the flat channel is exhausted to the outside through a ventilation device connected to the fourth ventilation port.

According to the present invention, beside the second heating zone, between the second heating zone and the second buffer zone, and at the end of the second buffer zone, further include a second air extraction area, and each second air extraction area includes an air extraction port, The air outlet is connected to a plurality of fourth air ports through a plurality of internal air passages through the second communication interface and the corresponding first communication interface respectively. hot air is exhausted to the outside.

Preferably, the vents are connected to external air ducts or external fans, and the connected external air ducts or external fans are operated to receive cold or hot air, or to discharge the hot air in the flat channel to the outside.

Preferably, the heating device is an infrared quartz tube, a ceramic heating sheet or a stainless steel heating tube.

Preferably, insulation cotton is filled between the interior of the shell of the fixed furnace body and the internal air ducts.

Preferably, thermal insulation cotton is stuffed between the inside of the shell of the movable furnace body and the internal air ducts.

According to the present invention, the external cold air in the inner air duct of the at least one first heating zone is further blown toward an air equalizing plate, a plurality of openings are evenly formed on the air equalizing plate, and the external cold air passes through the openings to blow evenly to the back of each heating unit.

According to the present invention, the external cold air in the inner air duct of the at least one second heating zone is further blown toward an air equalizing plate, a plurality of openings are evenly formed on the air equalizing plate, and the external cold air passes through the openings to blow evenly to the back of each heating unit.

Due to the use of the internal air duct design erected in the fixed furnace body and the movable furnace body, the overall thickness of the film drying furnace is reduced, and the structural design of the heating drying furnace is optimized.

1: Fixed furnace body

2: Active furnace body

11: Inside

111: First vent

112: Second vent

113: Third vent

114: Fourth vent

12: The first drying side

121: The first air knife

122: The first heating zone

1221: Heating device

1222: Air uniform board

1222a: Opening

123: first buffer

1231: Mouthpiece

124a~124o: The first communication interface

125: The first ventilation area

1251: Air outlet

21: Outside

22: Second drying side

221: Second Air Knife

222: Second heating zone

2222: Air uniform board

2222a: Opening

223: second buffer

2231: Mouthpiece

224a~224o: The second communication interface

225: Second exhaust area

2251: air outlet

F: Fan

M: Film to be dried

S: Flat channel

T1~T11: Internal air duct

FIG. 1 is a schematic view of the appearance of a film drying furnace according to a first embodiment of the present invention in an open state.

FIG. 2 is a schematic view of the appearance of the film drying furnace in a closed state.

3 is a schematic view of the appearance of the inner side of a fixed furnace body.

4 is a schematic view of the appearance of the first drying side of a fixed furnace body.

FIG. 5 is a schematic view of the appearance of the second drying side of a movable furnace body.

Fig. 6 is a schematic cross-sectional view along the AA' plane in Fig. 2 .

Fig. 7 is a schematic cross-sectional view along the BB' plane in Fig. 2 .

Fig. 8 is a schematic cross-sectional view taken along the CC' plane in Fig. 2 .

Fig. 9 is a schematic cross-sectional view along the DD' plane in Fig. 2 .

10 is a schematic side view of the film drying furnace according to the second embodiment of the present invention in an open state.

FIG. 11 is a schematic side sectional view of the film drying furnace.

The present invention will be described more specifically by referring to the following embodiments.

Please refer to FIG. 1 and FIG. 2 . FIG. 1 is a schematic view of the appearance of the film drying furnace in an open state according to the first embodiment of the present invention, and FIG. 2 is a schematic view of the appearance of the film drying furnace in a closed state. The film drying furnace is composed of two parts, a fixed furnace body 1 and a movable furnace body 2 . As the name implies, the fixed furnace body 1 cannot be moved due to certain objective factors (in this embodiment, it is restricted by the connected external air duct (not shown)); Therefore, it can move relative to the fixed furnace body 1 to open and close the film drying furnace. The detailed structure of the fixed furnace body 1 and the movable furnace body 2, as well as the operation mode of the thin film drying furnace, will be described in detail below in conjunction with the relevant drawings.

As shown in FIG. 1 and FIG. 2 , the fixed furnace body 1 is a plate-shaped shell, which includes an inner side 11 and a first drying side 12 . Please refer to FIG. 3 , which is a schematic view of the appearance of the inner side 11 of the fixed furnace body 1 . The inner side 11 forms a plurality of vents, such as a first vent 111 , a second vent 112 , a third vent 113 and a fourth vent 114 . These vents are used to connect external air ducts or external fans (not shown), and to receive cold air or hot air through the operation of these connected external air ducts or external fans, or to connect the fixed furnace body 1 and the movable furnace body 2 The hot air in the flat channel S between them is exhausted to the outside. The detailed connection method will be explained in the text below.

Please refer to FIG. 4 , which is a schematic view of the appearance of the first drying side 12 of the fixed furnace body 1 . The first drying side 12 includes a first air knife 121 , at least one first heating zone 122 , a first buffer zone 123 , a plurality of first communication ports 124 a to 124 o and a plurality of first air extraction zones 125 . For the design details and functions of the first air knife 121, please refer to FIG. 4 and FIG. 6 at the same time, wherein FIG. 6 is a schematic cross-sectional view along the AA' plane in FIG. 2 . The first air knife 121 is installed under the first drying side 12, and is connected to the first ventilation port 111 by an internal air duct T1, and the external hot air received through the first ventilation port 111 can be blown to a to-be-drying area at an adjustable angle. Film M. As shown in FIG. 6 , the hot air is represented by a dotted arrow. The external hot air pipe (not shown) connected by the first vent 111 enters the first air knife 121 through the first vent 111 , and then passes through the first air knife. The blowing nozzle of 121 blows evenly toward the film M to be dried. The direction of the blowing nozzle of the first air knife 121 can be adjusted. In this embodiment, the direction of the hot air blows vertically toward the film M to be dried. In other embodiments, the direction of the blowing nozzle of the first air knife 121 can be adjusted to be 30 degrees upward according to process requirements, and the hot air is blown toward the film M to be dried at a direction of 60 degrees. Due to this The inventive film drying furnace is suitable for drying various films. Therefore, the hot air blown by the first air knife 121 can have different temperatures according to different materials, such as 120°C when drying copper foil.

According to the present invention, the number of the first heating zones 122 can be designed in different numbers according to different drying requirements. In this embodiment, a first heating zone 122 is provided, as indicated by the long dashed box in FIG. 4 . The first heating area 122 is installed above the first air knife 121, and has a plurality of heating devices 1221. The heating devices 1221 are used to heat and dry the passing film M to be dried, such as maintaining a drying temperature of 200°C. In this embodiment, the heating device 1221 is an infrared quartz tube. According to the present invention, the heating device 1221 can also be a ceramic heating sheet or a stainless steel heating tube. The number and position of the heating devices 1221 are determined according to their power and drying operation requirements, which are not limited in the present invention. For the design details of the heating devices 1221, please refer to FIG. 7 , which is a schematic cross-sectional view along the BB' plane in FIG. 2 . Although the heating device 1221 generates heat on the front to heat and dry the film M to be dried, the back of the heating device 1221 is connected to a power line (not shown), and there are also some heat-labile components, such as gold foil plating, which need to be at a lower working temperature. Therefore, the back of the heating device 1221 needs to be moderately dissipated. To this end, the backs of the heating devices 1221 are respectively connected with two second air ducts 112 (the number corresponds to the internal air ducts T2 ) with two internal air ducts T2 (which can be more in design), so that the second ventilation openings 112 can pass through the second air ducts. Port 112 receives external cold air (indicated by reticulated arrows) from an external air duct connected thereto to cool the back of heating device 1221 . The temperature of the external cold air can be normal temperature, between 25°C and 40°C. In order to uniformly blow the external cold air to all the heating devices 1221, the external cold air in the inner air duct T2 of the first heating zone 122 will be blown to a uniform air plate 1222, and a plurality of openings 1222a are evenly formed on the air uniform plate 1222. , the external cold air can be evenly blown to the back of each heating device 1221 after passing through the openings 1222a.

The first buffer area 123 is designed for cooling and drying the film M to be dried, as indicated by the dotted frame in FIG. 4 . The first buffer zone 123 is installed above the first heating zone 122 and has a plurality of blowing nozzles 1231 (three in this embodiment). For the design details and functions of the mouthpiece 1231, please refer to FIG. 8 , which is a schematic cross-sectional view along the CC' plane in FIG. 2 . The mouthpieces 1231 are respectively connected to two third air vents 113 (the number corresponds to the internal air ducts T3 ) through two internal air ducts T3 (there can be more in design), and the nozzles 1231 will pass through these The third ventilation port 113 receives the external hot air (indicated by a dotted arrow) from the external air duct connected to it to cool down and dry the passing film M to be dried. The temperature of the external hot air here is lower than the working temperature maintained by the heating device 1221 , such as 80°C to 100°C.

In this embodiment, there are altogether 15 first communication ports 124a-124o, and the number thereof corresponds to the total number of air vents. The first communication ports 124 a to 124 o are opened at the periphery of two sides of the fixed furnace body 1 . Each of the first communication ports is connected to a corresponding vent through an internal air duct T4. For example, please refer to FIG. 7 again, the first communication port 124e is connected to one of the second ventilation ports 112 through an inner air duct T4, and the first communication port 124l is connected to the second ventilation port through another inner air duct T4 Another connection to port 112. It can be seen from this that, according to the present invention, each vent is connected to two internal air ducts, so that the external cold air or hot air can be sent to two different destinations through one vent synchronously, or it can pass through two from two places at the same time. The internal air duct extracts the waste hot air from the operation of the film drying furnace.

There are three first air extraction areas 125 , which are located beside the first heating area 122 , between the first heating area 122 and the first buffer area 123 , and at the end of the first buffer area 123 . Each of the first air extraction areas 125 includes an air extraction port 1251 . For the design details of the air outlet 1251, please refer to FIG. 9 , which is a schematic cross-sectional view along the DD' plane in FIG. 2 . The air outlet 1251 is respectively connected to the two fourth air vents 114 (the number corresponds to the internal air ducts T5 ) through the two internal air ducts T5 (the design can be more). The hot air (indicated by a dotted arrow) in the flat channel S is exhausted to the outside by means of the exhaust device connected to the fourth vent 114 .

In order to protect the operator and save unnecessary heat energy dissipation, according to the present invention, the space between the interior of the shell of the fixed furnace body 1 and the aforementioned internal air ducts T1 to T5 can be filled with thermal insulation cotton.

As shown in FIG. 1 and FIG. 2 , the movable furnace body 2 is also a plate-shaped shell, which corresponds to the fixed furnace body 1 in appearance, and can be moved relative to the movable furnace body 2 to open and close the film drying furnace. The movable furnace body 2 includes an outer side 21 and a second drying side 22 .

Please refer to FIG. 5 , which is a schematic view of the appearance of the second drying side 22 of the movable furnace body 2 . The second drying side includes a plurality of second communication ports 224a-224o (15 in this embodiment), a second air knife 221, At least one second heating area 222, a second buffer area 223 and a plurality of second air extraction areas 225 (there are three in this embodiment). The second communication ports 224a˜224o are opened on the two sides of the movable furnace body 2, each of the second communication ports corresponds to a first communication port, and can be detachably and tightly connected with the first communication port (no air leakage). ). That is to say, when the film drying furnace is to operate, the fixed furnace body 1 and the movable furnace body 2 are closed, the second communication interface 224a is closely connected with the first communication interface 124a, and the second communication interface 224b is closely connected with the first communication interface 124b. The second communication interface 224o is in close contact with the first communication interface 124o. Therefore, each of the second communication ports can receive cold air or hot air from the corresponding first communication port, and can also transmit waste hot air to the corresponding first communication port.

The second air knife 221 is installed below the second drying side 22 . Please refer to Figure 6 again. The second air knife 221 is connected to the first ventilation port 111 through an internal air duct T6 through the second communication port 224a and the corresponding first communication port 124a, and the external hot air received through the first ventilation port 111 (with a dotted arrow) ), blowing to the film M to be dried in an adjustable angle. Therefore, when the film drying furnace is in operation and the fixed furnace body 1 and the movable furnace body 2 are closed, the second air knife 221 and the first air knife 121 will simultaneously blow external hot air to both sides of the film M to be dried.

According to the present invention, the number of the second heating zone 222 is the same as that of the first heating zone 122, and there may be more than one. In this embodiment, according to processing requirements, there are two second heating zones 222, which are marked with a long dotted line. The second heating area 222 is installed above the second air knife 221, and like the first heating area 122, also has a plurality of heating devices 1221 (infrared quartz tubes), which can heat and dry the passing film M to be dried. As shown in FIG. 7 , the backs of the heating devices 1221 are connected to the corresponding first communication ports 124e and 124l respectively through the second communication ports 224e and 224l with two internal air ducts T7 (which may be more in design) Two air vents 112 (the number corresponds to the internal air duct T7 ) are used to cool the back of the heating device 1221 with the external cold air (represented by mesh arrows) received through the second air vents 112 . Since the inner air duct T2 and the inner air duct T4 are connected to the second vent 112, the inner air duct T4 and the inner air duct T7 can be closely connected with the first communication ports 124e and 124l through the second communication ports 224e and 224l, thereby It is realized that when the heating device 1221 of the second heating zone 222 and the first heating zone 122 is drying the film M to be dried, the back of the film M is also simultaneously cooled by the external cold air. Also like the first heating zone 122, the external cold air in the inner air duct T7 of the second heating zone 222 will further A plurality of openings 2222a are evenly opened on the air distribution plate 2222, and the external cold air will pass through the openings 2222a to blow toward the back of each heating device 1221 evenly.

The second buffer area 223 is the same as the first buffer area 123 , and is designed for cooling and drying the film M to be dried. The second buffer area 223 is installed above the second heating area 222 and is marked by a dotted frame, and has a plurality of blowing nozzles 2231 (three in this embodiment). Please refer to FIG. 8 , the mouthpieces 2231 are connected to a plurality of third ventilation ports respectively through the second communication ports 224g and 224n and the corresponding first communication ports 124g and 124n with two internal air ducts T8 (which can be more in design). The openings 113 (the number corresponds to the internal air ducts T8 ) are used to cool and dry the passing film M to be dried by the external hot air (indicated by dotted arrows) received through the third air openings 113 . Similarly, since the inner air duct T3 ′ and the inner air duct T3 of the first buffer zone 123 are connected to the third vent 113 , the inner air duct T3 ′ and the inner air duct T8 can communicate with each other through the second communication ports 224g and 224n. The first communication ports 124g and 124n are closely connected, so that the second buffer area 223 and the first buffer area 123 can simultaneously cool and dry the film M to be dried.

In this embodiment, there are also three second air extraction areas 225 , which are located beside the second heating area 222 , between the second heating area 222 and the second buffer area 223 , and at the end of the second buffer area 223 . Each second air extraction area 225 includes an air extraction port 2251 . For the design details of the air outlet 2251, please refer to Figure 9 again. The air exhaust port 2251 is connected to the two fourth ventilation ports 114 (the number corresponds to the number of the internal air ducts T9) through the second communication ports 224d and 224k and the corresponding first communication ports 124d and 124k, respectively. Road T9). The hot air (indicated by a dotted arrow) in the flat channel S is exhausted to the outside by means of the exhaust device connected to the fourth vent 114 . Similarly, since the inner air duct T5 ′ and the inner air duct T5 of the first air extraction area 125 are connected to the fourth ventilation port 114 , the inner air duct T5 ′ and the inner air duct T9 can communicate with each other through the second communication ports 224d and 224k. The first communication ports 124d and 124k are closely connected, so that the second air extraction area 225 and the first air extraction area 125 can operate synchronously.

The design of the first air extraction area 125 and the second air extraction area 225 can not only remove waste heat and evaporated solvent from the flat channel S, but also facilitate the airflow in the flat channel S.

Likewise, in order to protect the operator and save unnecessary heat loss, according to the present invention, the space between the inside of the casing of the movable furnace body 2 and the aforementioned internal air ducts T6-T9 can be filled with thermal insulation cotton.

When the fixed furnace body 1 is combined with the movable furnace body 2, the aforementioned flat channel S remains between the first drying side 12 and the second drying side 22, for the film M to be dried to enter from the bottom of the film drying furnace, and the left above it.

In the previous embodiment, the external cold air for cooling the heating device 1221 is provided by an external air duct or an external fan connected to the ventilation opening on the inner side 11 of the fixed furnace body 1 . According to the present invention, the fixed furnace body 1 and the movable furnace body 2 can also be installed with independent fans to provide cooling air, which will be described in the second embodiment below.

Please refer to FIGS. 10 and 11 . FIG. 10 is a schematic side view of a thin film drying furnace in an open state according to a second embodiment of the present invention, and FIG. 11 is a lateral cross-sectional schematic view of the thin film drying furnace. This embodiment is the same as most of the structure of the first embodiment. In order to simplify the description, the same elements in the two embodiments use the same symbols, and the types and functions of the same elements will not be repeated. The film drying furnace in the second embodiment also has a fixed furnace body 1 and a movable furnace body 2 . Similarly, the fixed furnace body 1 has an inner side 11 and a first drying side 12 , and the movable furnace body 2 has an outer side 21 and a second drying side 22 . Structurally, in the first embodiment, the fixed furnace body 1 and the movable furnace body 2 have a first air knife, at least one first heating zone, a first buffer zone, a plurality of first communication interfaces, and a plurality of first air extraction zones. , a second air knife, at least one second heating zone, a second buffer zone, a plurality of second communication interfaces, a plurality of second air extraction zones, a first ventilation port, a third ventilation port and a fourth ventilation port, the second implementation The thin film drying furnace in the example also has it. However, the designs of the first heating zone 122 and the second heating zone 222 are different.

In this embodiment, at least one first heating zone 122 is installed above the first air knife 121 and has a plurality of heating devices 1221 for heating and drying the passing film M to be dried. The backs of the heating devices 1221 are respectively connected with a plurality of fans F located on the inner side 11 by a plurality of internal air ducts T10 , so that the backs of the heating devices 1221 can be cooled by introducing external cold air through the fans F. As shown in FIG. Likewise, at least one second plus The hot zone 222 is installed above the second air knife 221 and has a plurality of heating devices 1221 for heating and drying the passing film M to be dried. The backs of the heating devices 1221 are respectively connected with a plurality of fans F located on the outer side 21 by a plurality of internal air ducts T11, so that the backs of the heating devices 1221 can be cooled by introducing external cold air through the fans F. FIG.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the scope of the appended patent application.

1: Fixed furnace body

2: Active furnace body

11: Inside

12: The first drying side

121: The first air knife

21: Outside

22: Second drying side

Claims (10)

A film drying furnace, comprising: a fixed furnace body, which is a plate-shaped shell, including an inner side and a first drying side, the inner side is formed with a plurality of ventilation openings, and the first drying side includes: a first air The knife is installed under the first drying side, and is connected to a first ventilation port with an internal air duct, and blows the external hot air received through the first ventilation port to a film to be dried in an adjustable angle; at least one The first heating zone, installed above the first air knife, has a plurality of heating devices for heating and drying the passing film to be dried, and the backs of the heating devices are respectively connected with a plurality of internal air ducts. second vents for cooling the back of the heating device with external cold air received through the second vents; a first buffer zone, mounted above the at least one first heating zone, having a plurality of blowing nozzles, the The mouthpiece is respectively connected to a plurality of third vents through a plurality of internal air ducts, and uses the external hot air received through the third vents to cool and dry the passing film to be dried; and a plurality of first communication ports , open on the periphery of the two sides of the fixed furnace body, each first communication interface is connected with a corresponding ventilation port through an internal air duct; and a movable furnace body, which is a plate-shaped shell, which can move relative to the fixed furnace body To open and close the film drying furnace, it includes an outer side and a second drying side, and the second drying side includes: a plurality of second communication ports, which are opened on the periphery of the two sides of the movable furnace body, and each second communication interface The position of the interface corresponds to a first communication interface, and can be closely connected with the first communication interface detachably; a second air knife is installed under the second drying side, and communicates through a second air duct through an internal air duct The interface is connected to the first ventilation port with the corresponding first communication port, and the external hot air received through the first ventilation port is blown toward the film to be dried in an adjustable angle; At least one second heating zone, installed above the second air knife, has a plurality of heating devices for heating and drying the passing film to be dried, and the back of these heating devices respectively passes through a plurality of internal air ducts The second communication ports are connected to the corresponding first communication ports with a plurality of second vents, so as to cool the back of the heating device with the external cold air received through the second vents; and a second buffer area installed in the Above at least one second heating zone, there are a plurality of blowing nozzles, and these blowing nozzles are connected with a plurality of third ventilation ports respectively through a second communication interface and a corresponding first communication interface with a plurality of internal air passages, and are used to pass through the The external hot air received by the third ventilation openings cools and dries the passing film to be dried, wherein when the fixed furnace body is combined with the movable furnace body, the first drying side and the second drying side are retained. A flat channel for the film to be dried enters from below the film drying furnace and leaves from above. A film drying furnace, comprising: a fixed furnace body, which is a plate-shaped shell, including an inner side and a first drying side, the inner side is formed with a plurality of ventilation openings, and the first drying side includes: a first air The knife is installed under the first drying side, and is connected to a first ventilation port with an internal air duct, and blows the external hot air received through the first ventilation port to a film to be dried in an adjustable angle; at least one The first heating area is installed above the first air knife and has a plurality of heating devices for heating and drying the passing film to be dried. A plurality of fans on the inner side are used to cool the back of the heating device by introducing external cold air through the fans; a first buffer zone, installed above the at least one first heating zone, has a plurality of blowing nozzles, the blowing nozzles Connecting a plurality of third vents through a plurality of internal air ducts respectively, and cooling and drying the passing film to be dried by the external hot air received through the third vents; and A plurality of first communication ports are opened on the periphery of the two sides of the fixed furnace body, and each first communication port is connected with a corresponding ventilation port through an internal air duct; and a movable furnace body, which is a plate-shaped shell, The film drying furnace can be moved relative to the fixed furnace body to open and close the film drying furnace. Around the periphery, each second communication interface position corresponds to a first communication interface, and can be detachably closely connected with the first communication interface; a second air knife is installed under the second drying side, with an internal The air duct is connected to the first ventilation port through a second communication port and the corresponding first communication port, and blows the external hot air received through the first ventilation port to the film to be dried in an adjustable angle; at least one first port Two heating zones, installed above the second air knife, have a plurality of heating devices for heating and drying the passing film to be dried, and the backs of the heating devices are respectively connected with a plurality of internal air ducts located on the outer side a plurality of fans on the upper part to cool the back of the heating device by introducing external cold air through the fans; and a second buffer zone, installed above the at least one second heating zone, with a plurality of blowing nozzles, the blowing nozzles Connect a plurality of third ventilation openings with a plurality of internal air ducts through the second communication interface and the corresponding first communication interface respectively, and use the external hot air received through these third ventilation openings to cool the passing film to be dried. Drying, wherein when the fixed furnace body is combined with the movable furnace body, a flat channel is left between the first drying side and the second drying side, for the film to be dried to pass under the film drying furnace Enter and exit from above. The thin film drying furnace according to claim 1 or claim 2, wherein next to the first heating zone, between the first heating zone and the first buffer zone, and at the end of the first buffer zone, further comprises a first ventilation Each first air extraction area includes an air outlet, and the air outlet is connected to a plurality of air passages through a plurality of internal air passages. a fourth ventilation port, and the hot air in the flat channel is exhausted to the outside by means of a ventilation device connected with the fourth ventilation port. The thin film drying furnace according to claim 1 or claim 2, wherein next to the second heating zone, between the second heating zone and the second buffer zone, and at the end of the second buffer zone, further comprises a second draft Each second air extraction area includes an air extraction opening, and the air extraction opening is connected with a plurality of fourth air openings through the second communication interface and the corresponding first communication interface respectively through a plurality of internal air ducts. The ventilation device connected to the vent, exhausts the hot air in the flat channel to the outside. The film drying furnace according to claim 1 or claim 2, wherein the vents are connected to external air ducts or external fans, and the connected external air ducts or external fans are operated to receive cold air or hot air, or The hot air in the flat channel is exhausted to the outside. The thin film drying furnace according to claim 1 or claim 2, wherein the heating device is an infrared quartz tube, a ceramic electric heating sheet or a stainless steel heating tube. The film drying furnace according to claim 1 or claim 2, wherein the interior of the shell of the fixed furnace body and the internal air ducts are filled with thermal insulation cotton. The film drying furnace according to claim 1 or claim 2, wherein the interior of the casing of the movable furnace body and the internal air ducts are filled with thermal insulation cotton. The film drying furnace according to claim 1 or claim 2, wherein the external cold air in the internal air duct of the at least one first heating zone is further blown toward an air uniform plate, and the air uniform plate is evenly opened with a plurality of openings There are holes through which external cold air passes to blow evenly to the back of each heating device. The film drying furnace according to claim 1 or claim 2, wherein the external cold air in the internal air duct of the at least one second heating zone is further blown toward an air uniform plate, and the air uniform plate is evenly opened with a plurality of openings There are holes through which external cold air passes to blow evenly to the back of each heating device.

Images