Coating machine device

Abstract

The invention relates to the technical field of coating machines, and discloses a coating machine device which comprises a coating machine assembly, a UV curing lamp box and a hot air curing oven. A first curing area and a second curing area are sequentially arranged on the coating machine assembly, the UV curing lamp box is mounted in the first curing area, and the hot air curing oven is mounted in the second curing area; an upper drying area and a lower drying area are arranged in the hot air curing oven, a first air inlet and a first air outlet which are communicated with the upper drying area are formed in the front face of the hot air curing oven, and a second air inlet and a second air outlet which are communicated with the lower drying area are further formed in the front face of the hot air curing oven. The structure of the hot air curing oven is optimized, and the hot air curing oven comprises the air guide piece, the tubular air distribution piece and the oil pipe, so that hot air is uniformly distributed, the temperature is kept stable, meanwhile, the direction of the hot air entering the lower drying area is changed, the influence of a guide roller is overcome, and the drying and curing uniformity and drying quality of a PET plate are improved.

Description

Technical Field

[0001] This invention relates to the field of coating machine technology, and more particularly to a coating machine apparatus. Background Technology

[0002] In the current PET sheet processing field, coating machine assembly equipment is required for processing. The coating machine assembly is usually composed of multiple functional components, including a double-roller coating mechanism for coating operations. In order to meet different curing requirements, the coating machine is also equipped with a UV curing lamp box and a hot air curing oven. During the processing of PET sheets, the blank PET sheets first pass through the double-roller coating on the coating machine assembly. Through the cooperation of the two rollers, the coating is evenly coated on the surface of the PET sheet. Then, the coated PET sheets enter the UV curing lamp box. Using the ultraviolet rays emitted by the UV curing lamp box, the coating is quickly cured to form a coating with certain properties. After curing, depending on the actual processing requirements, the top film can be peeled off or not. Then, it enters the hot air curing oven for hot air drying and curing to further improve the stability of the coating. After hot air drying and curing, the top film release paper is peeled off, and finally the bottom film is peeled off and the sheet is wound up to complete the entire processing process.

[0003] In practical applications of hot air curing ovens, air inlets and outlets are usually installed on the outside. When hot air is introduced into the oven through the air inlet, due to the flow characteristics of the hot air, the temperature in the area near the air inlet is relatively high, while the temperature in the area away from the air inlet is relatively low. This uneven temperature distribution directly affects the uniform diffusion of hot air in the oven. Consequently, during the drying and curing process of PET sheets, the curing speed and quality will be inconsistent in different locations due to the difference in ambient temperature, ultimately leading to uneven drying and curing effect and affecting product quality.

[0004] To address the aforementioned problems, this application proposes a coating machine apparatus. Summary of the Invention

[0005] This invention proposes a coating machine device that solves the problem in related technologies where, when hot air is introduced into the air inlet of a hot air curing oven, the temperature near the air inlet is high and the temperature away from the air inlet is low due to the flow characteristics, resulting in uneven temperature distribution, which affects the hot air diffusion effect, causes inconsistent curing speed and quality of PET sheets, and ultimately leads to uneven drying and curing effect, affecting product quality.

[0006] The present invention proposes a coating machine device, including a coating machine assembly, a UV curing lamp box and a hot air curing oven;

[0007] The coating machine assembly is provided with a first curing area and a second curing area in sequence. The UV curing lamp box is installed in the first curing area and the hot air curing oven is installed in the second curing area.

[0008] The hot air curing oven is provided with an upper drying zone and a lower drying zone. The front of the hot air curing oven is provided with a first air inlet and a first air outlet that communicate with the upper drying zone. The front of the hot air curing oven is also provided with a second air inlet and a second air outlet that communicate with the lower drying zone.

[0009] The upper drying zone is equipped with a first horizontally arranged tubular air distribution component, and the lower drying zone is equipped with a second horizontally arranged tubular air distribution component. The first and second tubular air distribution components are connected by a U-shaped air guide pipe. The upper drying zone is equipped with an air guide component that is connected to the first tubular air distribution component, and the air guide component corresponds to the first air inlet.

[0010] As a further optimization of the present invention, the first tubular air distribution component includes a first air distribution pipe, which is horizontally installed in the upper drying area and communicates with the air guide component. The bottom of the first air distribution pipe is connected to a plurality of spaced first air nozzles.

[0011] The second tubular air distribution component includes a second air distribution duct, which is horizontally installed in the lower drying area. The top of the second air distribution duct is connected to a plurality of spaced second air nozzles. The two ends of the U-shaped air guide duct are respectively connected to the first air distribution duct and the second air distribution duct.

[0012] As a further optimization of the present invention, a first oil pipe arranged horizontally is installed in the first air distribution duct, and a second oil pipe arranged horizontally is installed in the second air distribution duct. The first oil pipe and the second oil pipe are connected by a U-shaped oil guide pipe.

[0013] As a further optimization of the present invention, one end of the first oil pipe is connected to an oil inlet pipe that passes through the top of the hot air curing oven, and a first valve is installed on the oil inlet pipe; one end of the second oil pipe is connected to an oil outlet pipe that passes through the bottom of the hot air curing oven, and a second valve is installed on the oil outlet pipe.

[0014] As a further optimization of the present invention, the air guide includes an air guide box, which is installed in the upper drying area of ​​the hot air curing oven and corresponds to the position of the first air inlet. The front of the air guide box has an opening that communicates with the first air inlet. The bottom of the air guide box is connected to a connecting pipe, and the connecting pipe is connected to the first air distribution pipe. A control valve is installed on the connecting pipe.

[0015] As a further optimization of the present invention, a spiral heating tube is installed inside the air guide box, and the spiral heating tube is used to reheat the hot air.

[0016] As a further optimization of the present invention, a wind direction component for changing the distribution direction of hot air in the lower drying zone is installed in the second air inlet.

[0017] As a further optimization of the present invention, the air direction component includes an air direction part and a driving part. A plurality of air direction parts are installed in the second air inlet in sequence. The plurality of air direction parts are driven to rotate by the driving part to change the distribution direction of hot air in the lower drying zone.

[0018] As a further optimization of the present invention, the airflow section includes a shaft, air vanes and gears. Multiple air vanes are arranged sequentially inside the second air inlet. A shaft is fixed in the middle of the air vane. The top end of the shaft is rotatably connected to the top wall inside the second air inlet. The bottom end of the shaft rotatably passes through the bottom of the hot air curing oven and is equipped with a gear. The gear is driven by a drive unit to rotate the shaft.

[0019] As a further optimization of the present invention, the driving unit includes an electric push rod and a rack. The electric push rod is installed at the bottom of the hot air curing oven, and the driving end of the electric push rod is connected to a rack that meshes with multiple gears.

[0020] The above-described technical solution of the present invention has the following beneficial technical effects:

[0021] 1. During operation, the coating machine assembly starts and coats the PET sheet. The coated PET sheet is then dried and cured sequentially through a UV curing lamp box and a hot air curing oven. Inside the hot air curing oven, hot air enters the air guide from the first air inlet on the front and is then conveyed to the first tubular air distribution component, which evenly blows the hot air onto the upper surface of the PET sheet. The hot air is evenly distributed in the upper drying area. At the same time, the hot air is conveyed along the U-shaped air guide to the second tubular air distribution component, which evenly blows the hot air onto the lower surface of the PET sheet. The hot air is evenly distributed in the lower drying area. The hot air from the upper drying area is discharged from the first exhaust port, and the hot air from the lower drying area is discharged from the second exhaust port. The air guide, the first tubular air distribution component, and the second tubular air distribution component are arranged in a coordinated manner to effectively avoid uneven temperature distribution in the hot air curing oven, so that all parts of the PET sheet are in a consistent temperature environment during the drying and curing process, improving the uniformity of drying and curing and ensuring product quality.

[0022] 2. In order to maintain the heat of the upper and lower drying zones in the hot air curing oven, the present invention provides a first oil pipe in the first tubular air distribution component and a second oil pipe in the second tubular air distribution component. When hot air enters the first tubular air distribution component, it can heat the oil in the first oil pipe. When hot air enters the second tubular air distribution component, it can heat the oil in the second oil pipe. Even if the equipment stops during use, the first and second oil pipes can maintain the temperature of the upper and lower drying zones in the hot air curing oven respectively, ensuring that the temperature around the PET sheet does not drop rapidly during the drying process, thus ensuring the stability of the temperature around the PET sheet during the drying process and further improving the drying and curing effect.

[0023] 3. Since guide rollers are generally installed at the bottom of PET sheets during conveying, the design of the guide rollers can affect the drying effect of hot air on the lower surface of the PET sheets. Therefore, this invention also provides a second air inlet on the front of the hot air curing oven, which is connected to the lower drying zone. An air direction component is installed in the second air inlet. When hot air enters the lower drying zone through the second air inlet, multiple air direction components in the second air inlet can be driven to rotate synchronously by the drive unit, thereby changing the direction of hot air entering the lower drying zone. By changing the direction of hot air distribution in the lower drying zone, it works in conjunction with the second tubular air distribution component, effectively overcoming the influence of the guide rollers on the drying effect of the lower surface of the PET sheets, enhancing the drying capacity of hot air on the lower surface of the PET sheets, and further improving the quality of the entire drying and curing process. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a coating machine device proposed in this invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of the hot air curing oven of the present invention;

[0026] Figure 3 This is a schematic diagram of the mating structure of the first tubular air distribution component and the second tubular air distribution component of the present invention;

[0027] Figure 4 For the present invention Figure 3 Enlarged view of A in the middle;

[0028] Figure 5 This is a schematic diagram of the structure of the wind vane of the present invention;

[0029] Figure 6 This is a schematic diagram of the wind direction section of the present invention.

[0030] Reference numerals: 1. Coating machine assembly; 2. UV curing lamp box; 3. Hot air curing oven; 31. First air inlet; 32. First air outlet; 33. Second air inlet; 34. Second air outlet; 4. First tubular air distribution component; 41. First air distribution duct; 411. First air nozzle; 42. First oil pipe; 421. U-shaped oil guide pipe; 422. Oil inlet pipe; 423. First valve; 5. Second tubular air distribution component; 51. Second air distribution duct; 511, Second air nozzle; 52, Second oil pipe; 521, Oil drain pipe; 522, Second valve; 6, U-shaped air guide duct; 7, Air guide component; 71, Air guide box; 711, Spiral heating tube; 72, Connecting pipe; 721, Control valve; 8, Air direction component; 81, Air direction part; 811, Shaft; 812, Air vane; 813, Gear; 82, Drive part; 821, Electric push rod; 822, Rack. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0032] Example 1

[0033] like Figure 1-6 As shown, the present invention proposes a coating machine device, which includes a coating machine assembly 1, a UV curing lamp box 2, and a hot air curing oven 3;

[0034] The coating machine assembly 1 is provided with a first curing area and a second curing area in sequence. The UV curing lamp box 2 is installed in the first curing area, and the hot air curing oven 3 is installed in the second curing area.

[0035] The hot air curing oven 3 is provided with an upper drying zone and a lower drying zone. The front of the hot air curing oven 3 is provided with a first air inlet 31 and a first air outlet 32 ​​that are connected to the upper drying zone. The front of the hot air curing oven 3 is also provided with a second air inlet 33 and a second air outlet 34 that are connected to the lower drying zone.

[0036] The upper drying zone is equipped with a first horizontally arranged tubular air distribution component 4, and the lower drying zone is equipped with a second horizontally arranged tubular air distribution component 5. The first tubular air distribution component 4 and the second tubular air distribution component 5 are connected by a U-shaped air guide pipe 6. The upper drying zone is equipped with an air guide component 7 that is connected to the first tubular air distribution component 4, and the air guide component 7 corresponds to the first air inlet 31.

[0037] This coating machine achieves stepped curing of the coated PET sheets through a zoned curing design, as detailed below:

[0038] After the PET sheets are coated by the coating machine assembly 1, they first enter the UV curing light box 2 in the first curing area for preliminary UV curing. Ultraviolet light rapidly forms a basic coating structure, providing a stable foundation for subsequent hot air curing. The PET sheets then enter the hot air curing oven 3 in the second curing area. The upper and lower drying zones within the hot air curing oven 3 correspond to the drying requirements of the upper and lower surfaces of the sheets, respectively. Hot air enters through the first air inlet 31 and is guided by the air guide 7 to the first tubular air distributor 4, achieving uniform distribution of hot air in the upper drying zone. Simultaneously, the first tubular air distributor 4 uses a U-shaped air guide duct... 6. A portion of the hot air is directed into the second tubular air distribution unit 5 in the lower drying zone to ensure the supply of hot air to the lower drying zone. The hot air from the upper drying zone is discharged through the first exhaust port 32, and the hot air from the lower drying zone is discharged through the second exhaust port 34, forming a complete hot air circulation path. This design, through the synergistic cooperation of the dual curing zones, not only utilizes the speed of UV curing to improve processing efficiency, but also ensures coating stability through the uniformity of hot air curing. At the same time, the independent air duct design of the upper and lower drying zones avoids the temperature imbalance problem caused by a single air duct, making the curing conditions of the upper and lower surfaces of the PET sheet consistent, effectively improving the flatness of the product and the adhesion of the coating.

[0039] In this embodiment, the first tubular air distribution component 4 includes a first air distribution pipe 41, which is horizontally installed in the upper drying area and communicates with the air guide component 7. The bottom of the first air distribution pipe 41 is connected to a plurality of spaced first air nozzles 411.

[0040] The second tubular air distribution component 5 includes a second air distribution duct 51, which is horizontally installed in the lower drying area. The top of the second air distribution duct 51 is connected to a plurality of spaced second air nozzles 511. The two ends of the U-shaped air guide duct 6 are respectively connected to the first air distribution duct 41 and the second air distribution duct 51.

[0041] After the air guide 7 delivers hot air into the first air distribution duct 41, the hot air can be blown onto the upper surface of the PET sheet through multiple spaced first air nozzles 411 to avoid damage to the coating caused by strong winds at a single point. The second air distribution duct 51 is arranged horizontally in the lower drying area and receives the hot air from the first air distribution duct 41 through the U-shaped air guide duct 6. Multiple second air nozzles 511 at the top are vertically upward and aligned with the lower surface of the sheet to form a hot air jet structure symmetrical with the upper surface, thereby achieving uniform drying of the lower surface of the PET sheet.

[0042] In this embodiment, a first oil pipe 42 arranged horizontally is installed in the first air distribution pipe 41, and a second oil pipe 52 arranged horizontally is installed in the second air distribution pipe 51. The first oil pipe 42 and the second oil pipe 52 are connected by a U-shaped oil guide pipe 421.

[0043] During use, the oil needs to be injected into the first oil pipe 42. Under the action of the U-shaped oil guide pipe 421, it can flow into the second oil pipe 52. When the hot air flows through the first air distribution pipe 41 and the second air distribution pipe 51, it not only acts directly on the surface of the board for drying, but also transfers heat to the oil in the first oil pipe 42 and the second oil pipe 52, causing the oil temperature to rise. When the equipment is running normally, the hot oil can assist the hot air in maintaining the temperature of the first air distribution pipe 41 and the second air distribution pipe 51, reducing the heat loss of the hot air in the pipe. When the equipment experiences a short shutdown or fluctuation in the hot air supply, the heat stored in the hot oil will be continuously released to the upper and lower drying zones through the pipe walls of the first air distribution pipe 41 and the second air distribution pipe 51, preventing the temperature of the upper and lower drying zones from dropping rapidly. This design effectively solves the drawback of the traditional hot air curing oven 3 cooling down immediately upon shutdown, preventing the coating curing from being interrupted due to sudden temperature changes, which could lead to cracking, peeling and other problems.

[0044] In this embodiment, one end of the first oil pipe 42 is connected to an oil inlet pipe 422 that passes through the top of the hot air curing oven 3, and a first valve 423 is installed on the oil inlet pipe 422. One end of the second oil pipe 52 is connected to an oil outlet pipe 521 that passes through the bottom of the hot air curing oven 3, and a second valve 522 is installed on the oil outlet pipe 521.

[0045] When adding oil to the first oil pipe 42, open the first valve 423 on the oil inlet pipe 422, then connect the oil injection equipment to the oil inlet pipe 422, and the oil is injected into the first oil pipe 42 along the oil inlet pipe 422. The oil is then transported to the second oil pipe 52 along the U-shaped oil guide pipe 421, thus completing the oil filling.

[0046] It should be noted that when it is necessary to drain the deteriorated oil or carry out maintenance, the second valve 522 on the drain pipe 521 can be opened to drain the oil in the second oil pipe 52 along the drain pipe 521. Under the action of the U-shaped guide pipe 421, the oil in the first oil pipe 42 can be guided to the second oil pipe 52 and then discharged through the drain pipe 521.

[0047] In this embodiment, the air guide 7 includes an air guide box 71. The air guide box 71 is installed in the upper drying area inside the hot air curing oven 3 and corresponds to the position of the first air inlet 31. The front of the air guide box 71 has an opening that communicates with the first air inlet 31. The bottom of the air guide box 71 is connected to a connecting pipe 72, and the connecting pipe 72 is connected to the first air distribution pipe 41. A control valve 721 is installed on the connecting pipe 72.

[0048] When hot air enters the hot air curing oven 3 through the first air inlet 31 on the front, it can enter through the opening on the air guide box 71 and then be transported to the first air distribution duct 41 through the connecting pipe 72. The amount of air entering the first air distribution duct 41 can be controlled by the control valve 721 on the connecting pipe 72.

[0049] In this embodiment, a spiral heating tube 711 is installed inside the air guide box 71, and the spiral heating tube 711 is used to reheat the hot air.

[0050] When hot air enters the air guide box 71 through the first air inlet 31, it first passes through the area where the spiral heating tube 711 is located. After the spiral heating tube 711 is energized, it generates heat to reheat the incoming hot air. On the one hand, this can make up for the heat loss of the hot air during the transportation process and ensure that the temperature when it reaches the air nozzle meets the curing requirements. This is especially suitable for long-distance air duct transportation or processing scenarios in low-temperature environments. On the other hand, by adjusting the power of the spiral heating tube 711, the final temperature of the hot air can be controlled. It can adapt to the curing temperature range of different coatings and meet the processing needs of different types of PET boards and different coating formulations, thus improving the versatility of the equipment.

[0051] It should be further explained that the first air inlet 31 and the second air inlet 33 on the front of the hot air curing oven 3 are both connected to the pipe rack on the hot air blower. During operation, the hot air blower delivers hot air to the first air inlet 31 and the second air inlet 33 through the pipe rack.

[0052] Example 2

[0053] Since guide rollers are typically installed at the bottom of PET sheets during conveying, but the design of these guide rollers can affect the drying effect of hot air on the lower surface of the PET sheets, an air direction component 8 is added to the second air inlet 33 based on implementation one to change the distribution direction of hot air in the lower drying zone, as follows:

[0054] In this embodiment, a wind direction component 8 for changing the distribution direction of hot air in the lower drying zone is installed in the second air inlet 33. The wind direction component 8 includes a wind direction part 81 and a driving part 82. A plurality of wind direction parts 81 arranged in sequence are installed in the second air inlet 33. The plurality of wind direction parts 81 are driven to rotate by the driving part 82 to change the distribution direction of hot air in the lower drying zone.

[0055] When the hot air direction needs to be adjusted, the drive unit 82 starts, driving all the air direction units 81 to rotate synchronously, so that the angle at which the hot air enters the lower drying zone changes as a whole.

[0056] In this embodiment, the airflow section 81 includes a shaft 811, a wind vane 812, and a gear 813. Multiple wind vanes 812 are arranged sequentially inside the second air inlet 33. The shaft 811 is fixed in the middle of the wind vane 812. The top end of the shaft 811 is rotatably connected to the top wall inside the second air inlet 33. The bottom end of the shaft 811 rotatably passes through the bottom of the hot air curing oven 3 and is equipped with a gear 813. The gear 813 is driven by the drive section 82 to rotate the shaft 811. The drive section 82 includes an electric push rod 821 and a rack 822. The electric push rod 821 is installed at the bottom of the hot air curing oven 3. The drive end of the electric push rod 821 is connected to a rack 822 that meshes with multiple gears 813.

[0057] The rack 822 can be moved by the electric push rod 821. The rack 822 drives multiple gears 813 to drive multiple shafts 811 to rotate synchronously, thereby driving the air vanes 812 on the shafts 811 to change their tilt angle. The angle of the air vanes 812 determines the direction of hot air flow. When the air vanes 812 are vertical, the hot air enters the lower drying zone in a vertical direction. When the air vanes 812 are tilted, the hot air is deflected along the tilt direction of the air vanes 812, forming an oblique airflow. By changing the direction of hot air distribution in the lower drying zone, it works in conjunction with the second tubular air distribution component 5, effectively overcoming the influence of the guide roller on the drying effect of the lower surface of the PET sheet, enhancing the drying capacity of the hot air on the lower surface of the PET sheet, and further improving the quality of the entire drying and curing process.

[0058] The embodiments of the present invention have been described above. However, the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. A coating machine apparatus, characterized in that, It includes a coating machine assembly (1), a UV curing lamp box (2), and a hot air curing oven (3); The coating machine assembly (1) is provided with a first curing area and a second curing area in sequence. The UV curing lamp box (2) is installed in the first curing area, and the hot air curing oven (3) is installed in the second curing area. The hot air curing oven (3) is provided with an upper drying zone and a lower drying zone. The front of the hot air curing oven (3) is provided with a first air inlet (31) and a first air outlet (32) that are connected to the upper drying zone. The front of the hot air curing oven (3) is also provided with a second air inlet (33) and a second air outlet (34) that are connected to the lower drying zone. The upper drying zone is equipped with a first tubular air distribution component (4) arranged horizontally, and the lower drying zone is equipped with a second tubular air distribution component (5) arranged horizontally. The first tubular air distribution component (4) and the second tubular air distribution component (5) are connected by a U-shaped air guide pipe (6). The upper drying zone is equipped with an air guide component (7) that is connected to the first tubular air distribution component (4), and the air guide component (7) corresponds to the first air inlet (31).

2. The coating machine apparatus according to claim 1, characterized in that, The first tubular air distribution component (4) includes a first air distribution pipe (41), which is installed horizontally in the upper drying area and communicates with the air guide component (7). The bottom of the first air distribution pipe (41) is connected to a plurality of spaced first air nozzles (411). The second tubular air distribution component (5) includes a second air distribution pipe (51), which is installed horizontally in the lower drying area. The top of the second air distribution pipe (51) is connected to a plurality of spaced second air nozzles (511). The two ends of the U-shaped air guide pipe (6) are respectively connected to the first air distribution pipe (41) and the second air distribution pipe (51).

3. The coating machine apparatus according to claim 2, characterized in that, The first air distribution pipe (41) is equipped with a horizontally arranged first oil pipe (42), and the second air distribution pipe (51) is equipped with a horizontally arranged second oil pipe (52). The first oil pipe (42) and the second oil pipe (52) are connected by a U-shaped oil guide pipe (421).

4. The coating machine apparatus according to claim 3, characterized in that, One end of the first oil pipe (42) is connected to an oil inlet pipe (422) that passes through the top of the hot air curing oven (3), and a first valve (423) is installed on the oil inlet pipe (422). One end of the second oil pipe (52) is connected to an oil outlet pipe (521) that passes through the bottom of the hot air curing oven (3), and a second valve (522) is installed on the oil outlet pipe (521).

5. A coating machine apparatus according to claim 2, characterized in that, The air guide (7) includes an air guide box (71), which is installed in the upper drying area of ​​the hot air curing oven (3) and corresponds to the position of the first air inlet (31). The front of the air guide box (71) has an opening that communicates with the first air inlet (31). The bottom of the air guide box (71) is connected to a connecting pipe (72), and the connecting pipe (72) is connected to the first air distribution pipe (41). A control valve (721) is installed on the connecting pipe (72).

6. The coating machine apparatus according to claim 5, characterized in that, The air guide box (71) is equipped with a spiral heating tube (711), and the spiral heating tube (711) is used to reheat the hot air.

7. The coating machine apparatus according to claim 1, characterized in that, The second air inlet (33) is equipped with an air direction element (8) for changing the distribution direction of hot air in the lower drying zone.

8. The coating machine apparatus according to claim 7, characterized in that, The air direction component (8) includes an air direction part (81) and a drive part (82). Multiple air direction parts (81) are installed in the second air inlet (33) arranged in sequence. The multiple air direction parts (81) are driven to rotate by the drive part (82) to change the distribution direction of hot air in the lower drying zone.

9. A coating machine apparatus according to claim 8, characterized in that, The airflow section (81) includes a shaft (811), a wind vane (812), and a gear (813). Multiple wind vanes (812) are arranged sequentially inside the second air inlet (33). The shaft (811) is fixed in the middle of the wind vane (812). The top of the shaft (811) is rotatably connected to the top wall inside the second air inlet (33). The bottom of the shaft (811) rotates through the bottom of the hot air curing oven (3) and is equipped with a gear (813). The gear (813) is driven by the drive unit (82) to rotate the shaft (811).

10. A coating machine apparatus according to claim 9, characterized in that, The drive unit (82) includes an electric push rod (821) and a rack (822). The electric push rod (821) is installed at the bottom of the hot air curing oven (3). The drive end of the electric push rod (821) is connected to a rack (822) that meshes with multiple gears (813).

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