Coating drying auxiliary back heating device

Abstract

The utility model discloses a coating and drying auxiliary back heating device which comprises a box body and a heating device, two opposite openings are formed in the box body, supporting rollers are installed at the openings, a film is supported at the upper ends of the supporting rollers, the film penetrates through the box body, the heating device comprises a heating plate and an infrared radiator, the heating plate is located between the two supporting rollers, and the heating plate can be close to or away from the film. A heating plate with a heating function is arranged on the back face, not coated with glue, of the film in the drying oven, an infrared radiator is arranged on the back face, not coated with glue, of the film, the infrared radiator is located below the heating plate, the infrared radiator can heat the heating plate, and the infrared radiator can be close to or away from the heating plate. The heating effect can be adjusted by controlling the distance between the heating plate and the film, the temperature can be controlled by controlling the distance between the infrared radiator and the heating plate, the drying efficiency is improved, and the situation that the interior is not dried is prevented.

Description

Technical Field

[0001] This utility model relates to the field of coating and drying technology, and more specifically, to a coating and drying auxiliary back heating device. Background Technology

[0002] like Figure 1 As shown, in the prior art, after the film 101 passes through the coating roller 102, a coating is applied to one side of the film 101. The film is then conveyed to the oven 103 for drying. The oven 103 has multiple sections, and the temperature in the oven 103 gradually increases from both sides to the middle. Due to the long time that the coating equipment has been purchased, the drying efficiency of the coating oven 103 has decreased, and the final quality of the product fluctuates. In particular, the surface is often dry but the inside is not, which results in high solvent residue in VOC detection. Therefore, a technical solution is needed to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a coating drying auxiliary back heating device that can heat the back of the film.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model discloses a coating drying auxiliary back heating device, including a box and a heating device. The box has two opposite openings, and support rollers are installed at the openings. The upper end of the support rollers supports a film, and the film passes through the box. The heating device includes a heating plate and an infrared radiator. The heating plate is located between the two support rollers and can be close to or away from the film. The infrared radiator is located below the heating plate and can heat the heating plate. The infrared radiator can be close to or away from the heating plate.

[0006] Furthermore, the heating device includes a connecting frame, a guide frame, and a first driving device. The connecting frame is fixedly installed on both sides of the bottom of the heating plate, the guide frame is fixedly installed on the housing, and the first driving device is fixedly installed on the housing. The first driving device is connected to the connecting frame, and the connecting frame can move along the guide frame.

[0007] Furthermore, the heating device includes a mounting bracket that connects two of the connecting brackets. The mounting bracket is located below the infrared radiator. The mounting bracket is equipped with a second driving device that is connected to the infrared radiator. The second driving device drives the infrared radiator to move closer to or away from the heating plate.

[0008] Furthermore, the bottom of the housing is provided with a through hole for the second driving device to pass through.

[0009] Furthermore, the heating device includes a reflective device, which includes a frame, two first reflective plate groups, and two second reflective plate groups. The frame is fixedly installed on the infrared radiator. The two first reflective plate groups and the two second reflective plate groups are respectively located on the four sides of the frame. The side of the first reflective plate group and the second reflective plate group facing the heating plate is the reflective surface.

[0010] Furthermore, the first reflector assembly includes a first plate and a second plate, the connecting frame is provided with a hinge point, the first plate is hinged to the hinge point, the second plate is hinged to the frame, and the first plate and the second plate are slidably connected.

[0011] Furthermore, the first plate has slots on both sides, and the second plate has slots on both sides.

[0012] Furthermore, the second reflector assembly includes a third plate and a fourth plate, the third plate being hinged to the inner wall of the housing, the fourth plate being hinged to the frame, and the third plate and the fourth plate being slidably connected.

[0013] Furthermore, the upper surface of the heating plate is an arc surface, and the upper surface of the heating plate is concave towards the center at both ends in the film conveying direction.

[0014] The beneficial effects of this utility model are:

[0015] This invention features a heating plate with heating function installed on the uncoated back of the film inside the drying oven. The heating plate heats the film through infrared radiation. The heating effect can be adjusted by controlling the distance between the heating plate and the film. The temperature can be controlled by controlling the distance between the infrared radiator and the heating plate, thereby improving drying efficiency and preventing the situation where the outside is dry but the inside is not. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the background technology.

[0017] Figure 2 This is a cross-sectional view of this embodiment.

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0019] Reference numerals: 1. Box body; 11. Opening; 12. Through hole; 2. Heating device; 21. Heating plate; 22. Infrared radiator; 23. Connecting frame; 231. Hinge point; 24. Guide frame; 25. First driving device; 26. Mounting frame; 27. Second driving device; 28. Reflecting device; 281. Frame; 282. First reflector assembly; 2821. First plate; 28211. Slot; 2822. Second plate; 283. Second reflector assembly; 2831. Third plate; 2832. Fourth plate; 3. Support roller; 101. Membrane. Detailed Implementation

[0020] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] like Figure 2 , Figure 3 As shown, this embodiment discloses a coating drying auxiliary back heating device. Figure 2 The diagram shows a single drying oven. Multiple drying ovens can be connected end to end. The drying ovens are mainly heated and dried by electric heating wires. Each drying oven includes a box body 1 and a heating device 2. The box body 1 has two opposite openings 11. Support rollers 3 are installed at the openings 11. The upper end of the support rollers 3 supports the film 101. The film 101 passes through the two openings 11 of the box body 1. The film 101 is conveyed by external traction. The support rollers 3 support the lower end of the film 101 inside the box body 1 to prevent the film 101 from sagging significantly.

[0022] The heating device 2 includes a heating plate 21, an infrared radiator 22, a connecting frame 23, a guide frame 24, and a first driving device 25. The heating plate 21 is located between two support rollers 3 and can move closer to or further away from the membrane 101. The connecting frame 23 is fixedly installed on both sides of the bottom of the heating plate 21. The guide frame 24 is fixedly installed on the housing 1, and two guide frames 24 are provided at the bottom of the housing 1. The guide frame 24 and the connecting frame 23 are slidably connected. The first driving device 25 is fixedly installed on the housing 1 and is an electric telescopic rod. The first driving device 25 is connected to the connecting frame 23, and the telescopic rod of the first driving device 25 is connected to the connecting frame 23. The two first driving devices 25 can synchronously drive the connecting frame 23 to move along the guide frame 24, so that the heating plate 21 can move closer to or further away from the membrane 101. The heating effect of the heating plate 21 on the membrane 101 is controlled by controlling the distance between the heating plate 21 and the membrane 101. The closer the distance between the heating plate 21 and the membrane 101, the better the heating effect.

[0023] More preferably, the upper end surface of the heating plate 21 is an arc surface, and the upper end surface of the heating plate 21 is concave towards the center at both ends in the conveying direction of the film 101. Since the film 101 passes between the two support rollers 3, it will sag slightly in the middle position of the two support rollers 3 due to gravity. The upper end surface of the heating plate 21 is provided with a corresponding slightly concave arc surface, so that the distance between the film 101 and the heating plate 21 is more uniform when the film 101 passes over the heating plate 21, and the film 101 is heated more uniformly.

[0024] The infrared radiator 22 is located below the heating plate 21. The infrared radiator 22 can heat the heating plate 21. The emission direction of the infrared radiator 22 is towards the heating plate 21. Infrared heating completes energy transfer through radiation heat transfer without the need for a medium. The infrared rays released by the infrared radiator 22 act as electromagnetic wave carriers and directly act on the target heating plate 21. When the radiation wavelength matches the absorption characteristics of the heated material, the surface and interior of the object will effectively absorb the radiation energy. The heating plate 21 can provide auxiliary heating for the membrane 101 above it. Infrared heating is safer and consumes less energy compared to electric heating wire heating.

[0025] Infrared radiator 22 can move closer to or further away from heating plate 21. Heating device 2 includes mounting bracket 26, which connects to two connecting brackets 23. Mounting bracket 26 is located below infrared radiator 22. Mounting bracket 26 mounts second drive device 27, which is connected to infrared radiator 22. Second drive device 27 is an electric telescopic rod, and its telescopic rod is connected to the lower end face of infrared radiator 22. Second drive device 27 drives infrared radiator 22 to move closer to or further away from heating plate 21. The closer infrared radiator 22 is to heating plate 21, the higher its radiation utilization rate, and the higher its heating efficiency and heating temperature on heating plate 21. Under the same power, the farther infrared radiator 22 is from heating plate 21, the lower the temperature of heating plate 21. The temperature of heating plate 21 can be controlled by controlling the distance between infrared radiator 22 and heating plate 21. Heating plate 21 is equipped with corresponding temperature measuring terminals.

[0026] The first driving device 25 can control the heating plate 21 and the infrared radiator 22 to move up and down simultaneously, and control the distance between the heating plate 21 and the membrane 101 without changing the heating plate 21. The bottom of the housing 1 is provided with a through hole 12, through which the second driving device 27 passes, providing space for the second driving device 27 to move when the heating plate 21 and the infrared radiator 22 move as a whole.

[0027] The heating device 2 includes a reflective device 28, which includes a frame 281, two first reflective plate groups 282, and two second reflective plate groups 283. The frame 281 is fixedly installed on the infrared radiator 22 and is rectangular. The two first reflective plate groups 282 and the two second reflective plate groups 283 are located on the four sides of the frame 281, respectively. The side of the first reflective plate group 282 and the second reflective plate group 283 facing the heating plate 21 is the reflective surface. The reflective surface is a reflective coating or a reflective film. The first reflective plate group 282 and the second reflective plate group 283 can reflect part of the radiation energy reflected from the heating plate 21, thereby increasing the utilization rate of infrared radiation.

[0028] The first reflector assembly 282 includes a first plate 2821 and a second plate 2822. The connecting frame 23 is provided with a hinge point 231. The first plate 2821 is hinged to the hinge point 231, and the second plate 2822 is hinged to the frame 281. The first plate 2821 and the second plate 2822 are slidably connected. The first plate 2821 has slots 28211 on both sides, and the second plate 2822 is located in the slots 28211 on both sides. When the infrared radiator 22 moves closer to or further away from the heating plate 21, the first plate 2821 and the second plate 2822 can rotate synchronously. During the rotation, the second plate 2822 can overlap and slide with the first plate 2821 to realize the extension and retraction of the first reflector assembly 282.

[0029] Similarly, the second reflector assembly 283 includes a third plate 2831 and a fourth plate 2832. The third plate 2831 is hinged to the inner wall of the housing 1, and the fourth plate 2832 is hinged to the frame 281. The third plate 2831 and the fourth plate 2832 are slidably connected. When the infrared radiator 22 moves closer to or further away from the heating plate 21, the third plate 2831 and the fourth plate 2832 can rotate synchronously. During the rotation, the fourth plate 2832 can overlap and slide with the third plate 2831 to realize the extension and retraction of the second reflector assembly 283.

[0030] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A coating drying auxiliary back heating device, characterized in that, The device includes a housing (1) and a heating device (2). The housing (1) has two opposing openings (11). A support roller (3) is installed at the opening (11). The upper end of the support roller (3) supports a membrane (101). The membrane (101) passes through the housing (1). The heating device (2) includes a heating plate (21) and an infrared radiator (22). The heating plate (21) is located between the two support rollers (3). The heating plate (21) can move closer to or away from the membrane (101). The infrared radiator (22) is located below the heating plate (21). The infrared radiator (22) can heat the heating plate (21). The infrared radiator (22) can move closer to or away from the heating plate (21).

2. A back heating device according to claim 1, wherein The heating device (2) includes a connecting frame (23), a guide frame (24), and a first driving device (25). The connecting frame (23) is fixedly installed on both sides of the bottom of the heating plate (21). The guide frame (24) is fixedly installed on the housing (1). The first driving device (25) is fixedly installed on the housing (1). The first driving device (25) is connected to the connecting frame (23). The connecting frame (23) can move along the guide frame (24).

3. The auxiliary back heating device for coating and drying according to claim 2, wherein The heating device (2) includes a mounting bracket (26) that connects two connecting brackets (23). The mounting bracket (26) is located below the infrared radiator (22). The mounting bracket (26) is equipped with a second driving device (27) that is connected to the infrared radiator (22). The second driving device (27) drives the infrared radiator (22) to move closer to or away from the heating plate (21).

4. The auxiliary back heating device for coating and drying according to claim 3, wherein The bottom of the housing (1) is provided with a through hole (12) through which the second drive device (27) passes.

5. The auxiliary back heating device for coating and drying according to claim 2, wherein The heating device (2) includes a reflector (28), which includes a frame (281), two first reflector groups (282), and two second reflector groups (283). The frame (281) is fixedly installed on the infrared radiator (22). The two first reflector groups (282) and the two second reflector groups (283) are located on the four sides of the frame (281), and the side of the first reflector group (282) and the second reflector group (283) facing the heating plate (21) is a reflective surface.

6. A coated drying auxiliary back heating device according to claim 5, wherein The first reflector assembly (282) includes a first plate (2821) and a second plate (2822). The connecting frame (23) is provided with a hinge point (231). The first plate (2821) is hinged to the hinge point (231), and the second plate (2822) is hinged to the frame (281). The first plate (2821) and the second plate (2822) are slidably connected.

7. The coated drying auxiliary back heating device of claim 6, wherein, The first plate (2821) has slots (28211) on both sides, and the second plate (2822) has both sides located in the slots (28211).

8. The coated drying auxiliary back heating device of claim 5, wherein, The second reflector assembly (283) includes a third plate (2831) and a fourth plate (2832). The third plate (2831) is hinged to the inner wall of the housing (1), and the fourth plate (2832) is hinged to the frame (281). The third plate (2831) and the fourth plate (2832) are slidably connected.

9. The auxiliary back heating device for coating and drying according to claim 1, wherein The upper surface of the heating plate (21) is an arc surface, and the upper surface of the heating plate (21) is concave towards the center at both ends of the conveying direction of the membrane (101).

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