Drying oven and drying tunnel of dry film coating machine and coating machine

Abstract

The invention discloses a drying oven of a dry film coating machine, which comprises a gas drying and heating device, a heat recovery device, a first box body and a second box body, and the first box body is fixedly connected with the second box body. In the using process of the improved coating machine, a coating sequentially penetrates through the first box body and the second box body along with movement of a dry film, when the coating is located in the first box body, primary drying and shaping treatment is conducted on the coating through high-temperature gas with the high humidity and the low temperature, and preheating of the coating is completed; when the coating is moved to the second box body, the coating is fully dried and shaped through high-temperature gas with low humidity and slightly low temperature, and when the coating is moved to the position below the drying mechanism, the coating is blown by the dry high-temperature gas, so that a small amount of residual water in the coating can be completely squeezed out; quick drying and shaping of the exterior of the coating when any water exists in the coating can be avoided, so that the influence on the dry film coating quality caused by cracks on the surface of the coating is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of dry film coating machines, and in particular to a dry film coating machine oven, a drying tunnel and a coating machine. Background Art

[0002] Coating machines are mainly used for surface coating production of films, paper, etc. This machine coats the rolled substrate with a layer of glue, paint or ink with specific functions, and then cuts it into sheets or reels it after drying.

[0003] After the dry film is coated, the existing coating machine generally moves the dry film coated with the paint directly to the drying tunnel and dries the paint on the surface of the dry film through dry hot air. The hot air blows directly on the surface of the paint. Since the paint containing more water is often not fixed, it may cause wrinkles on the paint. In addition, since the hot air is relatively dry and has strong water vapor absorption, the water in the external paint is quickly vaporized and flows out, so that the external paint is quickly fixed, while the inside of the paint may still contain a large amount of water. Due to the push of the external paint by the large amount of internal water vapor when it flows out, cracks may occur on the surface of the paint, affecting the quality of dry film coating. Summary of the invention

[0004] The object of the present invention is to provide a dry film coating machine oven, a drying tunnel and a coating machine, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dry film coating machine oven, comprising a gas drying and heating device, a heat recovery device, a first box body and a second box body, the first box body is fixedly connected to the second box body, and the interior of the first box body is communicated with the interior of the second box body, the gas drying and heating device is fixedly installed on the top side of the second box body, the heat recovery device is fixedly installed on the top side of the connection between the first box body and the second box body, and the air inlet end of the gas drying and heating device is connected and installed with the corresponding exhaust end of the heat recovery device through a connecting pipe, and the hot air inlet end of the heat recovery device passes through the box wall of the second box body and is fixedly connected to the box wall of the second box body.

[0006] A drying tunnel of a dry film coating machine comprises the above-mentioned drying oven of a dry film coating machine, wherein a sealing mechanism is commonly provided in the openings of the first box body and the second box body, wherein the sealing mechanism comprises a sealing plate, wherein the two ends of the sealing plate are respectively inserted into the openings of the first box body and the second box body and fixedly connected to the inner wall of the opening of the first box body and the inner wall of the opening of the second box body, wherein a rectangular hole is provided on the sealing plate, wherein a support plate is fixedly installed through the rectangular hole, wherein the two ends of the support plate are respectively fixedly connected to the inner wall of the first box body and the inner wall of the second box body, wherein the two side walls of the support plate are both gap-matched with the inner wall of the first box body and the inner wall of the second box body, wherein the top side of the support plate is coplanarly arranged with the bottom side of the first box body feed port and the bottom side of the second box body discharge port, wherein a flow guide mechanism is provided below the support plate, and a drying mechanism is provided in the second box body.

[0007] Preferably, a storage groove is provided on the inner top side of the rectangular hole, a baffle is provided in the storage groove, and the outer peripheral wall of the baffle is in contact with the inner wall of the storage groove, and the bottom end of the baffle is inserted into the rectangular hole and matches with the gap of the support plate.

[0008] Preferably, a threaded groove is opened on the top side of the baffle, a motor is fixedly installed at the position of the threaded groove corresponding to the inner top side of the storage groove, a threaded rod is fixedly installed on the driving end of the motor, and the bottom of the threaded rod is inserted into the threaded groove and threadedly connected to the inner wall of the threaded groove.

[0009] Preferably, the drying mechanism includes a guide shell, which is fixedly installed on the top side of the second box body at a position corresponding to the discharge port of the second box body, and the air inlet end of the guide shell passes through the box wall of the second box body and is connected to the exhaust end of the gas drying and heating equipment. A plurality of exhaust pipes are fixedly installed on the bottom side of the guide shell, and the spacing between two adjacent exhaust pipes is equal. The interior of the exhaust pipe is connected to the interior of the guide shell, and the bottom end opening of the exhaust pipe is flared, and the width of the bottom end opening of the exhaust pipe is equal to the width of the support plate.

[0010] Preferably, the guide mechanism includes two fixed plates, which are relatively arranged below the exhaust pipe, and each fixed plate is fixedly connected to the inner wall of the second box body and the support plate. The distance between the exhaust pipe and the sealing plate is greater than one-fourth of the length of the support plate, and the side of the fixed plate close to the sealing plate is matched with the gap of the sealing plate.

[0011] Preferably, a plurality of air pumps are provided below the support plate, and the intervals between two adjacent air pumps are equal, the air pumps are fixedly connected to the inner bottom wall of the second box body, and the exhaust end of the air pump passes through the sealing plate and is fixedly connected to the sealing plate.

[0012] Preferably, a mesh plate is provided below the support plate, and the outer peripheral wall of the mesh plate is fixedly connected to the inner wall of the first box body and the sealing plate, and the mesh plate is located above the exhaust end of the air pump.

[0013] A coating machine comprises the above-mentioned drying tunnel of a dry film coating machine, wherein the coating device of the coating machine is arranged on a side of a first box body away from a second box body, and the winding device of the coating machine is arranged on a side of the second box body away from the first box body.

[0014] The present invention has at least the following beneficial effects: 1. During the use of the improved coating machine, as the dry film moves, the coating passes through the first box and the second box in turn. When the coating is in the first box, the coating is preliminarily dried and shaped by high-temperature gas with high humidity and low temperature, and the coating is preheated. When the coating moves to the second box, the coating is fully dried and shaped by high-temperature gas with low humidity and slightly lower temperature. When the coating moves to the bottom of the drying mechanism, the coating is blown by the dry high-temperature gas, which can completely force out the remaining small amount of moisture in the coating, and can avoid the rapid drying and shaping of the coating outside when there is any moisture inside the coating, thereby avoiding cracks on the coating surface and affecting the quality of dry film coating; 2. When the dry film is located in the first box and the second box, the support plate is located at the bottom of the dry film to support and limit the dry film, so that the dry film always remains straight and does not need to be in a stretched state, thereby avoiding shrinkage and deformation of the dry film, which may cause cracks on the coating surface and affect the coating quality of the dry film.

[0015] 3. During the drying process of the paint on the dry film, the dry high-temperature airflow discharged by the drying mechanism will only blow on the fixed paint, and then the excess gas in the second box is introduced into the bottom of the first box by the guide mechanism and discharged, so that only an airflow from bottom to top will be formed in the first box, and finally the airflow will be avoided from blowing on the unfixed paint, thereby avoiding the airflow from blowing causing wrinkles on the surface of the paint during the drying process, affecting the quality of the dry film coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0017] Figure 1 It is an overall schematic diagram of the present invention; Figure 2 It is a schematic diagram of the overall structure of the first box body and the second box body of the present invention; Figure 3 This is a schematic diagram of the internal structure of the first box and the second box of the present invention; Figure 4 For the present invention Figure 3A schematic diagram of the front view structure of Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at A in the middle; Figure 6 It is a schematic diagram of the internal structure of the second box of the present invention; Figure 7 It is a schematic diagram of the internal structure of the first box of the present invention; Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure at B in the middle; Fig. 9 It is a schematic diagram of the internal structure of the sealing plate of the present invention.

[0018] In the figure: 1. gas drying and heating equipment; 2. heat recovery equipment; 3. first box body; 4. second box body; 5. blocking mechanism; 51. sealing plate; 52. rectangular hole; 53. storage tank; 54. baffle; 55. threaded groove; 56. motor; 57. threaded rod; 6. drying mechanism; 61. guide shell; 62. exhaust pipe; 63. support plate; 7. guide mechanism; 71. fixing plate; 72. air pump; 73. mesh plate. DETAILED DESCRIPTION

[0019] In order to make the technical solutions and advantages of the present invention more clearly understood, the present invention 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 present invention and are not used to limit the present invention.

[0020] The present invention provides a technical solution: referring to Figure 1-9 The present invention discloses an oven for a dry film coating machine, comprising a gas drying and heating device 1, a heat recovery device 2, a first box body 3 and a second box body 4, wherein the first box body 3 is fixedly connected to the second box body 4, and the interior of the first box body 3 is communicated with the interior of the second box body 4, the gas drying and heating device 1 is fixedly installed on the top side of the second box body 4, the heat recovery device 2 is fixedly installed on the top side of the connection between the first box body 3 and the second box body 4, and the air inlet end of the gas drying and heating device 1 is connected and installed with the corresponding exhaust end of the heat recovery device 2 through a connecting pipe, and the hot air inlet end of the heat recovery device 2 passes through the box wall of the second box body 4 and is fixedly connected to the box wall of the second box body 4.

[0021] According to the above, a drying tunnel of a dry film coating machine is obtained, including the above-mentioned drying oven of a dry film coating machine, a blocking mechanism 5 is commonly provided in the openings of the first box body 3 and the second box body 4, the blocking mechanism 5 comprises a sealing plate 51, two ends of the sealing plate 51 are respectively inserted into the openings of the first box body 3 and the openings of the second box body 4 and fixedly connected to the inner wall of the opening of the first box body 3 and the inner wall of the opening of the second box body 4, a rectangular hole 52 is opened on the sealing plate 51, a support plate 63 is fixedly installed through the rectangular hole 52, two ends of the support plate 63 are respectively fixedly connected to the inner wall of the first box body 3 and the inner wall of the second box body 4, two side walls of the support plate 63 are gap-matched with the inner wall of the first box body 3 and the inner wall of the second box body 4, the top side of the support plate 63 is coplanar with the bottom side of the feeding port of the first box body 3 and the bottom side of the discharging port of the second box body 4, a flow guide mechanism 7 is provided below the support plate 63, and a drying mechanism 6 is provided in the second box body 4; In this embodiment, during the use of the drying tunnel of the improved coating machine, as the dry film is located in the first box body 3 and the second box body 4, the support plate supports and limits the dry film at the bottom side of the film, so that the dry film always remains in a straight state, and the dry film does not need to be in a stretched state, thereby avoiding the shrinkage and deformation of the dry film, which may cause cracks on the coating surface and affect the coating quality of the dry film; When the paint is in the first box 3, the paint is initially dried and fixed by the high-temperature gas with high humidity and low temperature in the first box 3, and the paint is preheated. When the paint moves to the second box 4, the paint is fully dried and fixed by the high-temperature gas with low humidity and slightly lower temperature. When the paint moves to the bottom of the drying mechanism 6, the paint is blown by the dry high-temperature gas, and the small amount of water remaining in the paint can be completely driven out. During the above-mentioned process of drying the dry film paint, the dry high-temperature airflow discharged by the drying mechanism 6 will only blow on the fixed paint, and then the excess gas in the second box 4 is introduced into the bottom of the first box 3 by the guide mechanism 7 and discharged, so that only an airflow from bottom to top is formed in the first box 3, and finally the airflow is prevented from blowing on the unfixed paint.

[0022] In a further preferred embodiment of the present invention, Figure 4 and Figure 5 As shown, a storage groove 53 is provided on the inner top side of the rectangular hole 52, a baffle 54 is provided in the storage groove 53, and the outer peripheral wall of the baffle 54 contacts the inner wall of the storage groove 53, and the bottom end of the baffle 54 is inserted into the rectangular hole 52 and is gap-matched with the support plate 63; In this embodiment, by telescopically moving the baffle 54 in the storage groove 53, the height of the gap between the bottom side of the baffle 54 and the bottom wall of the rectangular hole 52 can be adjusted, so that the device can adapt to the use of dry films of various thicknesses, and by the movement of the baffle 54, only a very small gap will remain between the bottom side of the baffle 54 and the paint, thereby forming a slightly closed space in the first box body 3 and the second box body 4.

[0023] In a further preferred embodiment of the present invention, Figure 7-9 As shown, a thread groove 55 is formed on the top side of the baffle 54, a motor 56 is fixedly mounted on the inner top side of the storage groove 53 at a position corresponding to the thread groove 55, a threaded rod 57 is fixedly mounted on the driving end of the motor 56, and the bottom of the threaded rod 57 is inserted into the thread groove 55 and is threadedly connected to the inner wall of the thread groove 55; In this embodiment, the motor 56 starts to drive the threaded rod 57 to rotate. Due to the mutual interference between the baffle 54 and the inner wall of the storage tank 53, the rotating threaded rod 57 pulls or pushes the baffle 54 to slowly move up or down. The operator does not need to manually adjust the position of the baffle 54, thereby preventing the operator from coming into contact with the high-temperature gas and causing injury to the operator.

[0024] In a further preferred embodiment of the present invention, Figure 3 and Figure 4 As shown, the drying mechanism 6 includes a guide shell 61, which is fixedly installed on the top side of the second box body 4 at a position corresponding to the discharge port of the second box body 4, and the air inlet end of the guide shell 61 passes through the box wall of the second box body 4 and is connected to the exhaust end of the gas drying and heating device 1. A plurality of exhaust pipes 62 are fixedly installed on the bottom side of the guide shell 61, and the spacing between two adjacent exhaust pipes 62 is equal. The interior of the exhaust pipe 62 is connected to the interior of the guide shell 61, and the bottom end opening of the exhaust pipe 62 is expanded, and the width of the bottom end opening of the exhaust pipe 62 is equal to the width of the support plate 63. In this embodiment, when the above-mentioned paint moves to the position of the exhaust pipe 62, the high-temperature dry gas discharged from the exhaust port of the gas drying and heating equipment 1 is directly injected into the guide shell 61. Since the opening at the bottom end of the exhaust pipe 62 is small and the amount of exhausted gas is limited, the high-temperature dry gas in the guide shell 61 will first fill the multiple exhaust pipes 62, and then blow on the paint from the exhaust port of the exhaust pipe 62 to force out the small amount of water remaining in the fixed dry paint, so that the paint on the dry film is completely dry.

[0025] In a further preferred embodiment of the present invention, Figure 6As shown, the air guide mechanism 7 includes two fixing plates 71, which are arranged oppositely below the exhaust pipe 62, and each fixing plate 71 is fixedly connected to the inner wall of the second box body 4 and the support plate 63, the distance between the exhaust pipe 62 and the sealing plate 51 is greater than one quarter of the length of the support plate 63, and the side of the fixing plate 71 close to the sealing plate 51 is gap-matched with the sealing plate 51; In this embodiment, after the above-mentioned dry high-temperature gas dries the paint, the temperature of the hot gas drops slightly and contains a small amount of water vapor, eventually forming a first mixed gas. Due to the obstruction of the heat conduction plate 63 and the fixed plate 71, the first mixed gas moves along the heat conduction plate 63 toward the sealing plate 51, so that the paint between the exhaust pipe 62 and the sealing plate 51 is surrounded by the first mixed gas, and the paint is fully dried and fixed by the high-temperature gas with low humidity and slightly lower temperature, so that the above-mentioned high-temperature gas will not blow on the unfixed paint, avoiding the blowing of the airflow to cause wrinkles on the surface of the paint during the drying process, affecting the quality of the dry film coating.

[0026] In a further preferred embodiment of the present invention, Figure 6-8 As shown, a plurality of air pumps 72 are provided below the support plate 63, and the spacing between two adjacent air pumps 72 is equal. The air pumps 72 are fixedly connected to the inner bottom wall of the second box body 4, and the exhaust end of the air pump 72 passes through the sealing plate 51 and is fixedly connected to the sealing plate 51; In this embodiment, the water vapor flowing out of the preliminary setting paint is dissolved in the first mixed gas, so that the water vapor content in the first mixed gas is greatly increased and the gas temperature is further reduced, thereby forming a second mixed gas. At the same time, the air pump 72 is started to continuously and uniformly draw the second mixed gas located at the bottom side of the heat conducting plate 63 in the second box 4 into the first box 3, so that a negative pressure chamber is formed at the bottom of the second box 4, and finally the second mixed gas on the heat conducting plate 63 continues to flow through the gap between the fixing plate 71 and the sealing plate 51 to the bottom of the second box 4 to replenish the lost gas at the bottom of the second box 4, and finally the dry hot gas discharged from the exhaust pipe 62 Continue to slide along the heat conduction plate 63 toward the sealing plate 51, so that the first mixed gas is always around the paint between the exhaust pipe 62 and the sealing plate 51, and continue to carry out the subsequent preliminary shaping of the paint. The second mixed gas is filled in the first box 3, and the paint is initially dried and shaped by the high-temperature gas with a lower temperature. The dry high-temperature gas injected into the second box 4 by the gas drying and heating equipment 1 can be used to dry the paint at different stages, making full use of the heat energy in the dry high-temperature gas. There is no need to provide gases with different temperatures and humidities to the exhaust pipe 62, the second box 4 and the first box 3 respectively, thereby reducing the energy loss of the device.

[0027] In a further preferred embodiment of the present invention, Figure 6 , Figure 7 and Fig. 9 As shown, a mesh plate 73 is provided below the support plate 63, and the outer peripheral wall of the mesh plate 73 is fixedly connected to the inner wall of the first box body 3 and the sealing plate 51, and the mesh plate 73 is located above the exhaust end of the air pump 72; In this embodiment, after the second mixed gas is injected into the first box body 3, due to the limited amount of gas passing through the holes of the mesh plate 73, the second mixed gas injected into the first box body 3 is divided into several small air flows and blown on the heat conducting plate 63, and then passes through the gap between the heat conducting plate 63 and the inner wall of the first box body 3 to fill the first box body 3. As the water in the unfixed coating vaporizes and dissolves in the second mixed gas, the water vapor content in the second mixed gas is further increased and the temperature of the second mixed gas is further reduced. At the same time, the heat recovery device 2 continues to be heated by the top of the first box body 3. The gas in the first box 3 is extracted for heating treatment by the gas drying and heating device 1, leaving space for the second mixed gas subsequently injected into the first box 3. By regulating the air extraction or exhaust rate of the gas drying and heating device 1, the heat recovery device 2 and the air pump 72, a space with relatively stable temperature and humidity can be formed inside the first box 3 and the second box 4. At the same time, only gas from bottom to top will be formed inside the first box 3, and the airflow will not blow on the paint, thereby avoiding wrinkles on the surface of the paint during the drying process caused by the blowing of the airflow, affecting the quality of the dry film coating.

[0028] Reference Figure 1 and Figure 4 According to the above, a coating machine is obtained, including the above-mentioned dry film coating machine drying tunnel, the coating equipment of the coating machine is arranged on the side of the first box body 3 away from the second box body 4, and the winding equipment of the coating machine is arranged on the side of the second box body 4 away from the first box body 3.

[0029] In this embodiment, during the use of the improved coating machine, the dry film removed from the coating device passes through the feed port of the first box 3 into the first box 3 and the second box 4, and is then removed from the discharge port of the second box 4. The dry film is rewound by the winding device, so that the movement of the dry film drives the paint to gradually pass through the first box 3 and the second box 4, and in turn passes through high-temperature gases of different temperatures and humidities to dry the paint.

[0030] Working principle: During the use of the improved coating machine, the dry film removed from the coating device passes through the feed port of the first box 3 and enters the first box 3 and the second box 4, and then is removed from the discharge port of the second box 4. The dry film is rewound by the winding device, and the installation of the dry film is completed. Then the coating device is started, and a coating of a specific thickness and a specific shape is coated on the dry film. The coating passes through the drying tunnel as the dry film moves to dry the coating on the dry film. After the above-mentioned dry film is installed, the motor 56 drives the threaded rod 57 to rotate. Due to the mutual interference between the baffle 54 and the inner wall of the storage tank 53, the rotating threaded rod 57 pulls or pushes the baffle 54 to slowly move up or down, thereby adjusting the gap between the baffle 54 and the dry film, and finally leaving a gap of a certain height between one side of the baffle 54 and the dry film, so that the interior of the first box body 3 and the interior of the second box body 4 form a nearly closed space; After the position adjustment of the baffle 54 is completed, when the paint moves to the bottom of the exhaust pipe 62, the gas drying and heating device 1 inhales the outside air through the heat recovery device 2, and performs drying and heating treatment on the air, and then injects the hot air after the drying and heating treatment into the guide shell 61. Since the opening at the bottom end of the exhaust pipe 62 is small and the exhaust gas volume is limited, the hot air in the guide shell 61 is blown onto the paint from the exhaust port of the exhaust pipe 62, forcing out the small amount of water remaining in the fixed dry paint, so that the paint on the dry film is completely dry; After the hot air dries the paint, the temperature of the hot air drops slightly and contains a small amount of water vapor, eventually forming a first mixed gas. Due to the obstruction of the heat conducting plate 63 and the fixing plate 71, the first mixed gas moves along the heat conducting plate 63 toward the sealing plate 51, so that the first mixed gas surrounds the paint between the exhaust pipe 62 and the sealing plate 51, and the paint between the exhaust pipe 62 and the sealing plate 51 is in a high temperature environment, and finally the water in the paint between the exhaust pipe 62 and the sealing plate 51 is quickly vaporized and flows out due to the heat, forming a relatively dry paint. The water vapor flowing out of the coating is dissolved in the first mixed gas, so that the water vapor content in the first mixed gas is greatly increased and the gas temperature is further reduced, thereby forming a second mixed gas. At the same time, the air pump 72 is started to continuously and uniformly draw the second mixed gas located at the bottom side of the heat conducting plate 63 in the second box 4 into the first box 3, so that a negative pressure chamber is formed at the bottom of the second box 4, and finally the second mixed gas on the heat conducting plate 63 continues to flow through the gap between the fixing plate 71 and the sealing plate 51 to the bottom of the second box 4 to replenish the lost gas at the bottom of the second box 4, and finally the dry hot gas discharged from the exhaust pipe 62 can continue to slide along the heat conducting plate 63 toward the sealing plate 51, so that the first mixed gas is always surrounding the coating between the exhaust pipe 62 and the sealing plate 51; After the second mixed gas is injected into the first box body 3, due to the limited amount of gas passing through the holes of the mesh plate 73, the second mixed gas injected into the first box body 3 is divided into several small airflows and blown on the heat conducting plate 63, and then passes through the gap between the heat conducting plate 63 and the inner wall of the first box body 3 to fill the inside of the first box body 3, so that the second mixed gas surrounds the paint in the first box body 3, and the moisture in the paint in the first box body 3 is slowly vaporized and flows out, thereby forming a slightly dry paint, and the paint is fixed; It should be noted that, as the water in the coating vaporizes and dissolves in the second mixed gas, the water vapor content in the second mixed gas will be further increased and the temperature of the second mixed gas will be further reduced. At the same time, the heat recovery device 2 continuously extracts the gas in the first box 3 from the top of the first box 3 to heat the gas absorbed by the gas drying and heating device 1, leaving space for the second mixed gas subsequently injected into the first box 3, so that a space with relatively stable temperature and humidity is formed in the first box 3, and at the same time, only gas from bottom to top is formed inside the first box 3, and the airflow will not blow on the coating; It should be noted that, during the drying process of the above-mentioned coating, the dry film is always in a straight state due to the support and limitation of the dry film by the support plate.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A dry film coating machine oven, comprising a gas drying and heating device (1), a heat recovery device (2), a first box body (3) and a second box body (4), characterized in that: The first box (3) is fixedly connected to the second box (4), and the interior of the first box (3) is communicated with the interior of the second box (4). The gas drying and heating device (1) is fixedly installed on the top side of the second box (4). The heat recovery device (2) is fixedly installed on the top side of the connection between the first box (3) and the second box (4). The air inlet end of the gas drying and heating device (1) is connected to the corresponding exhaust end of the heat recovery device (2) through a connecting pipe. The hot air inlet end of the heat recovery device (2) passes through the box wall of the second box (4) and is fixedly connected to the box wall of the second box (4).

2. A drying tunnel for a dry film coater, comprising the drying oven for a dry film coater according to claim 1, characterized in that: The openings of the first box (3) and the second box (4) are provided with a blocking mechanism (5), the blocking mechanism (5) comprising a blocking plate (51), the two ends of the blocking plate (51) being respectively inserted into the opening of the first box (3) and the opening of the second box (4) and fixedly connected to the inner wall of the opening of the first box (3) and the inner wall of the opening of the second box (4), the blocking plate (51) being provided with a rectangular hole (52), the rectangular hole (52) being provided with a support plate (63) fixedly passing through the support plate (63), the support plate (63) being provided with a support plate (63) The two ends of the support plate (63) are respectively fixedly connected to the inner wall of the first box body (3) and the inner wall of the second box body (4); the two side walls of the support plate (63) are both gap-matched with the inner wall of the first box body (3) and the inner wall of the second box body (4); the top side of the support plate (63) is coplanar with the bottom side of the feed port of the first box body (3) and the bottom side of the discharge port of the second box body (4); a flow guide mechanism (7) is provided below the support plate (63); and a drying mechanism (6) is provided in the second box body (4).

3. The drying tunnel of a dry film coating machine according to claim 2, characterized in that: A storage groove (53) is provided on the inner top side of the rectangular hole (52), a baffle (54) is provided in the storage groove (53), and the outer peripheral wall of the baffle (54) is in contact with the inner wall of the storage groove (53), and the bottom end of the baffle (54) is inserted into the rectangular hole (52) and is gap-matched with the support plate (63).

4. The drying tunnel of a dry film coating machine according to claim 3, characterized in that: A threaded groove (55) is formed on the top side of the baffle (54); a motor (56) is fixedly mounted on the inner top side of the storage groove (53) at a position corresponding to the threaded groove (55); a threaded rod (57) is fixedly mounted on the driving end of the motor (56); and the bottom of the threaded rod (57) is inserted into the threaded groove (55) and is threadably connected to the inner wall of the threaded groove (55).

5. The drying tunnel of a dry film coating machine according to claim 4, characterized in that: The drying mechanism (6) comprises a guide shell (61), the guide shell (61) being fixedly mounted on the top side of the second box body (4) at a position corresponding to the discharge port of the second box body (4), and the air inlet end of the guide shell (61) passes through the box wall of the second box body (4) and is connected to the exhaust end of the gas drying and heating device (1), a plurality of exhaust pipes (62) are fixedly mounted on the bottom side of the guide shell (61), and the spacing between two adjacent exhaust pipes (62) is equal, the interior of the exhaust pipe (62) is connected to the interior of the guide shell (61), the bottom end opening of the exhaust pipe (62) is arranged in a flared shape, and the width of the bottom end opening of the exhaust pipe (62) is equal to the width of the support plate (63).

6. A drying tunnel for a dry film coating machine according to claim 5, characterized in that: The flow guide mechanism (7) comprises two fixing plates (71), the two fixing plates (71) being arranged opposite to each other below the exhaust pipe (62), and each fixing plate (71) being fixedly connected to the inner wall of the second box body (4) and the support plate (63), the spacing between the exhaust pipe (62) and the sealing plate (51) being greater than one quarter of the length of the support plate (63), and a side of the fixing plate (71) close to the sealing plate (51) being gap-matched with the sealing plate (51).

7. The drying tunnel of a dry film coating machine according to claim 6, characterized in that: A plurality of air pumps (72) are provided below the support plate (63), and the spacing between two adjacent air pumps (72) is equal. The air pumps (72) are fixedly connected to the inner bottom wall of the second box body (4), and the exhaust end of the air pump (72) penetrates the sealing plate (51) and is fixedly connected to the sealing plate (51).

8. The drying tunnel of a dry film coating machine according to claim 7, characterized in that: A mesh plate (73) is provided below the support plate (63), and the outer peripheral wall of the mesh plate (73) is fixedly connected to the inner wall of the first box body (3) and the sealing plate (51), and the mesh plate (73) is located above the exhaust end of the air pump (72).

9. A coating machine, comprising a drying tunnel of a dry film coating machine according to any one of claims 2 to 8, characterized in that: The coating device of the coating machine is arranged on a side of the first box (3) away from the second box (4), and the winding device of the coating machine is arranged on a side of the second box (4) away from the first box (3).

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