A type of aluminum profile spraying and curing oven

Abstract

This application relates to the field of aluminum profile processing equipment, and discloses an aluminum profile spraying and curing oven, including a curing oven body and an oven door rotatably installed on the right side of the curing oven body. Multiple evenly distributed electric heating plates are fixedly installed on the inner walls of both the front and rear sides of the curing oven body. A U-shaped frame is arranged inside the curing oven body, with three equally spaced vertical rods slidingly passing through the bottom of the U-shaped frame. Bearings are rotatably installed at the top of each of the three vertical rods, and a lower disc is fixedly installed at the top of each of the three bearings. Multiple equally spaced annularly distributed lower rotating shafts are rotatably installed at the top of the lower discs, and lower U-shaped clamping plates are fixedly installed at the top of each of the lower rotating shafts. This application has the following advantages and effects: it can heat and cure aluminum profiles from multiple angles and in all directions, effectively avoiding the problem of poor curing effect caused by uneven local temperature, and significantly improving the curing quality and efficiency of aluminum profiles.

Description

Technical Field

[0001] This application relates to the field of aluminum profile processing equipment technology, and in particular to an aluminum profile spraying and curing oven. Background Technology

[0002] In modern industrial production, aluminum profiles are widely used in construction, automotive, aerospace, and many other fields due to their excellent properties such as lightweight, high strength, and corrosion resistance. During the production of aluminum profiles, a coating needs to be sprayed onto their outer surface to enhance their corrosion resistance, wear resistance, and aesthetics. After the coating is applied, a curing oven is used to cure the coating on the outer surface of the aluminum profile.

[0003] A search revealed that patent document CN220027640U discloses an aluminum profile spraying and curing oven, which includes an oven body. Heating pipes are provided on both sides of the inner wall of the oven body. A circulating fan is symmetrically arranged at the top of the inner wall of the oven body. An adjustable suspension device is provided at the bottom of the inner wall of the oven body. The adjustable suspension device includes a first threaded rod and a second threaded rod. The first threaded rod and the second threaded rod are symmetrically arranged inside the oven body. The two ends of the first threaded rod are fixedly connected to the top and bottom of the inner wall of the oven body, respectively.

[0004] The above solution still has at least the following shortcomings in actual use: Since the position of the heating pipes installed in the traditional curing oven is mostly fixed, the limitation of their installation position will cause certain temperature differences in different parts of the oven. As a result, the aluminum profiles near the heating pipes will be hotter than those far away from the heating pipes, resulting in uneven heating of different parts of the aluminum profiles, which will reduce the quality and efficiency of the curing process of the aluminum profiles.

[0005] Therefore, we propose an aluminum profile spraying and curing oven to solve the above problems. Utility Model Content

[0006] The purpose of this application is to provide an aluminum profile spraying and curing oven that can heat and cure aluminum profiles from multiple angles and in all directions, effectively avoiding the problem of poor curing effect caused by uneven local temperature, and greatly improving the curing quality and efficiency of aluminum profiles.

[0007] The above-mentioned technical objective of this application is achieved through the following technical solution: an aluminum profile spraying and curing oven, comprising a curing oven body and an oven door rotatably installed on the right side of the curing oven body. Multiple evenly distributed electric heating plates are fixedly installed on the inner walls of both the front and rear sides of the curing oven body. A U-shaped frame is provided inside the curing oven body. Three vertical rods slidably pass through the bottom of the U-shaped frame, and bearings are rotatably installed at the top of each of the three vertical rods. A lower disc is fixedly installed at the top of each of the three bearings. Multiple lower rotating shafts rotatably are annularly distributed at equal intervals on the top of the lower discs. Lower U-shaped clamping plates are fixedly installed at the top of each of the multiple lower rotating shafts. The top of the U-shaped frame rotates... The device has three vertical shafts that are evenly spaced throughout. Each vertical shaft has an upper disc fixedly mounted at its bottom. The top of each upper disc has multiple upper rotating shafts that are evenly spaced in a ring. Each upper rotating shaft has an upper U-shaped clamp fixedly mounted at its bottom. Each upper U-shaped clamp is located directly above a corresponding lower U-shaped clamp. A drive mechanism is provided on the U-shaped frame. The drive mechanism includes three worm gears, a motor, a drive shaft, and three worms. The three worm gears are fixedly mounted on the top of the corresponding vertical shaft. The motor is fixedly mounted on the top of the U-shaped frame. The drive shaft is fixedly mounted on the output shaft end of the motor. Each of the three worms is fixedly mounted on the drive shaft and meshes with its corresponding worm gear.

[0008] By adopting the above technical solution, the design of multiple electric heating plates is used to heat the internal space of the curing oven. The synergistic effect of the upper and lower U-shaped clamps is used to firmly clamp and position the aluminum profile. The design of the drive mechanism can heat and cure the aluminum profile from multiple angles and in all directions, effectively avoiding the problem of poor curing effect caused by uneven local temperature, and greatly improving the curing quality and efficiency of the aluminum profile. Motor 1 is used to control the rotation of the drive shaft and three worm gears. By utilizing the meshing transmission action of the three worm gears with the corresponding worm wheels, the three vertical shafts, three upper discs, multiple upper rotating shafts, and multiple upper U-shaped clamps can be rotated horizontally, thereby flexibly adjusting the position of the aluminum profile.

[0009] A further feature of this application is that an upper heat insulation cover is fixedly installed on the top of the U-shaped frame, and the three worm gears, motor one, drive shaft and three worms are all located inside the upper heat insulation cover.

[0010] By adopting the above technical solution, the design of the upper heat insulation cover is used to provide heat insulation protection for the motor, avoid damage to it caused by high temperature environment, and extend its service life.

[0011] A further configuration of this application is as follows: the drive mechanism further includes multiple gears and three internal gear rings, the multiple gears are respectively fixedly installed on the top of the corresponding upper rotating shaft, the three internal gear rings are all fixedly installed on the top inner wall of the U-shaped plate frame, and the bottom ends of the three vertical shafts respectively pass through the corresponding internal gear rings, and the gears mesh with the corresponding internal gear rings.

[0012] By adopting the above technical solution, the meshing transmission action of gears and internal gear rings can drive the upper rotating shaft and upper U-shaped clamp to rotate, thereby enabling flexible adjustment of the angle of the aluminum profile.

[0013] A further provision of this application is that a lower heat insulation cover is fixedly installed at the bottom of the U-shaped frame, the bottom ends of the three vertical rods are all located inside the lower heat insulation cover, and three electric actuators distributed at equal intervals are fixedly installed on the bottom inner wall of the lower heat insulation cover, with the output shaft ends of the three electric actuators respectively fixedly connected to the bottom ends of the corresponding vertical rods.

[0014] By adopting the above technical solution, the design of the lower heat insulation cover is used to provide heat insulation protection for the three electric push rods, avoiding damage to them in high-temperature environments and extending their service life. Utilizing the telescopic feature of the electric push rods, the distance between the upper and lower U-shaped clamps can be adjusted to adapt to the clamping and positioning of aluminum profiles of different sizes, thereby enhancing the versatility of the equipment.

[0015] A further feature of this application is that the bottom of the U-shaped frame is provided with three clearance holes, and the tops of the three vertical rods pass through the corresponding clearance holes.

[0016] By adopting the above technical solution and designing the clearance hole, the smooth vertical movement of the vertical rod can be ensured.

[0017] A further feature of this application is that a high-temperature resistant sealing ring is fixedly installed on the inner wall of the clearance hole, and the vertical rod slides and seals with the clearance hole through the high-temperature resistant sealing ring.

[0018] By adopting the above technical solution, the design of the high-temperature resistant sealing ring ensures the sealing performance between the vertical rod and the clearance hole, greatly reducing the amount of heat entering the lower heat insulation cover.

[0019] A further feature of this application is that the curing oven body is provided with an adjustment mechanism, which includes a second motor, a threaded rod, and a movable seat. The second motor is fixedly installed on the left outer wall of the curing oven body, and the output shaft end of the second motor extends into the curing oven body. The threaded rod is fixedly installed on the output shaft end of the second motor, and the movable seat is threadedly fitted onto the threaded rod. The bottom of the movable seat is fixedly connected to the top of the U-shaped plate frame.

[0020] By adopting the above technical solution, the second motor is used to control the rotation of the threaded rod. By utilizing the threaded connection between the moving seat and the threaded rod, the moving seat can drive the U-shaped plate frame to move horizontally and linearly. This allows the U-shaped plate frame to be moved out of the curing furnace or into the curing furnace, making it convenient to pick up and put in aluminum profiles.

[0021] A further provision of this application is that a fixing plate is fixedly installed on the top inner wall of the curing oven body, and a bearing seat two is fixedly installed on the left side wall of the fixing plate, with the right end of the threaded rod rotatably connected to the bearing seat two.

[0022] By adopting the above technical solution, the design of the bearing seat 2 and the fixing plate enhances the stability of the threaded rod during rotation.

[0023] A further feature of this application is that the top surface of the upper heat insulation cover is lower than the bottom surface of the fixing plate.

[0024] By adopting the above technical solution, the upper heat insulation cover can be prevented from touching the fixed plate, ensuring the smooth horizontal movement of the U-shaped frame.

[0025] A further feature of this application is that a limiting seat located on the left side of the lower heat insulation cover is fixedly installed at the bottom of the U-shaped plate frame, and a limiting groove is opened on the bottom inner wall of the curing oven body, with the bottom of the limiting seat slidably installed in the limiting groove.

[0026] By adopting the above technical solution, the cooperation between the limiting seat and the limiting groove provides guidance and limitation for the movement of the U-shaped frame, ensuring the stability and accuracy of its movement.

[0027] This application includes at least one of the following beneficial technical effects:

[0028] 1. The drive mechanism designed in this application can heat and cure aluminum profiles from multiple angles and in all directions, effectively avoiding the problem of poor curing effect caused by uneven local temperature, and greatly improving the curing quality and efficiency of aluminum profiles.

[0029] 2. The adjustment mechanism designed in this application can control the horizontal linear movement of the U-shaped plate frame, thereby allowing the U-shaped plate frame to be moved out of the curing oven or into the curing oven, facilitating the loading and unloading of aluminum profiles.

[0030] 3. This application designs an electric actuator that can adjust the distance between the upper and lower U-shaped clamping plates, adapting to the clamping and positioning of aluminum profiles of different sizes, thus enhancing the versatility of the equipment. Attached Figure Description

[0031] Figure 1 This is a front-view stereoscopic structural diagram of this embodiment.

[0032] Figure 2 This is a front view sectional three-dimensional structural schematic diagram of this embodiment.

[0033] Figure 3 This is a front-view three-dimensional structural diagram of the curing furnace body and furnace door.

[0034] Figure 4 yes Figure 3 A front view sectional view of the three-dimensional structure.

[0035] Figure 5 This is a front-view three-dimensional structural diagram of the gear and internal gear ring.

[0036] Figure 6 yes Figure 4 A magnified structural diagram of part A in the middle.

[0037] In the diagram, 1. Curing oven body; 2. Oven door; 3. U-shaped frame; 4. Vertical rod; 5. Bearing 1; 6. Lower disc; 7. Lower rotating shaft; 8. Lower U-shaped clamping plate; 9. Vertical shaft; 10. Upper disc; 11. Upper rotating shaft; 12. Upper U-shaped clamping plate; 13. Worm gear; 14. Motor 1; 15. Drive shaft; 16. Worm; 17. Upper heat insulation cover; 18. Gear; 19. Internal gear ring; 20. Lower heat insulation cover; 21. Electric push rod; 22. Motor 2; 23. Threaded rod; 24. Moving seat; 25. Fixed plate; 26. Shaft seat 2; 27. Limiting seat; 28. Limiting groove; 29. ​​Electric heating plate. Detailed Implementation

[0038] The technical solution of this application will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0039] See Figures 1-6 This application provides an aluminum profile spraying and curing oven, including an oven body 1 and an oven door 2 rotatably installed on the right side of the oven body 1. Multiple evenly distributed electric heating plates 29 are fixedly installed on the inner walls of both the front and rear sides of the oven body 1. A U-shaped frame 3 is provided inside the oven body 1. Three equally spaced vertical rods 4 slide through the bottom of the U-shaped frame 3. Bearings 5 ​​are rotatably installed at the top of each of the three vertical rods 4. A lower disc 6 is fixedly installed at the top of each of the three bearings 5. The top of the lower disc 6 rotates... Multiple lower rotating shafts 7 are rotatably installed in a ring with equal spacing. Each of the lower rotating shafts 7 has a lower U-shaped clamp 8 fixedly installed at its top. The top of the U-shaped frame 3 is rotatably connected by three vertical shafts 9 with equal spacing. Each of the three vertical shafts 9 has an upper disc 10 fixedly installed at its bottom. Each of the upper discs 10 has multiple upper rotating shafts 11 with equal spacing in a ring with equal spacing. Each of the upper rotating shafts 11 has an upper U-shaped clamp 12 fixedly installed at its bottom. Each of the upper U-shaped clamps 12 is located directly above the corresponding lower U-shaped clamp 8.

[0040] In this embodiment, a driving mechanism is provided on the U-shaped frame 3. The design of the driving mechanism enables multi-angle and all-round heating and curing of the aluminum profile, effectively avoiding the problem of poor curing effect caused by uneven local temperature, and greatly improving the curing quality and efficiency of the aluminum profile. The driving mechanism includes three worm gears 13, a motor 14, a drive shaft 15, and three worms 16. The three worm gears 13 are respectively fixedly mounted on the top of the corresponding vertical shaft 9. The motor 14 is fixedly mounted on the top of the U-shaped frame 3. The drive shaft 15 is fixedly mounted on the output shaft end of the motor 14. The three worms 16 are all fixedly mounted on the drive shaft 15 and mesh with the corresponding worm gears 13. The driving mechanism also includes multiple gears 18 and three internal gear rings 19. The multiple gears 18 are respectively fixedly mounted on the top of the corresponding upper rotating shaft 11. The three internal gear rings 19 are all fixedly mounted on the top inner wall of the U-shaped frame 3, and the bottom ends of the three vertical shafts 9 pass through the corresponding internal gear rings 19. The gears 18 mesh with the corresponding internal gear rings 19.

[0041] In this embodiment, an upper heat insulation cover 17 is fixedly installed on the top of the U-shaped frame 3, and the three worm gears 13, motor 14, drive shaft 15 and three worms 16 are all located inside the upper heat insulation cover 17.

[0042] In this embodiment, a lower heat insulation cover 20 is fixedly installed at the bottom of the U-shaped plate frame 3. The bottom ends of the three vertical rods 4 are all located inside the lower heat insulation cover 20. Three electric push rods 21 with equal spacing are fixedly installed on the bottom inner wall of the lower heat insulation cover 20. The output shaft ends of the three electric push rods 21 are fixedly connected to the bottom ends of the corresponding vertical rods 4. The design of the electric push rods 21 can adjust the spacing between the upper U-shaped clamping plate 12 and the lower U-shaped clamping plate 8, adapt to the clamping and positioning of aluminum profiles of different sizes, and enhance the versatility of the equipment.

[0043] In this embodiment, the bottom of the U-shaped plate frame 3 is provided with three clearance holes, and the top ends of the three vertical rods 4 pass through the corresponding clearance holes respectively. A high-temperature resistant sealing ring is fixedly installed on the inner wall of the clearance hole, and the vertical rod 4 slides and seals with the clearance hole through the high-temperature resistant sealing ring.

[0044] In this embodiment, an adjustment mechanism is provided on the curing oven body 1. The adjustment mechanism is designed to allow the U-shaped plate frame 3 to be moved out of or into the curing oven body 1, facilitating the handling of aluminum profiles. The adjustment mechanism includes a second motor 22, a threaded rod 23, and a movable seat 24. The second motor 22 is fixedly installed on the left outer wall of the curing oven body 1, and the output shaft end of the second motor 22 extends into the curing oven body 1. The threaded rod 23 is fixedly installed on the output shaft end of the second motor 22, and the movable seat 24 is threaded onto the threaded rod 23. The bottom of the movable seat 24 is fixedly connected to the top of the U-shaped plate frame 3. It should be noted that the second motor 22 is a reversible motor.

[0045] In this embodiment, a fixing plate 25 is fixedly installed on the top inner wall of the curing oven body 1, and a bearing seat 26 is fixedly installed on the left side wall of the fixing plate 25. The right end of the threaded rod 23 is rotatably connected to the bearing seat 26, and the top surface of the upper heat insulation cover 17 is lower than the bottom surface of the fixing plate 25.

[0046] In this embodiment, a limiting seat 27 located on the left side of the lower heat insulation cover 20 is fixedly installed at the bottom of the U-shaped plate frame 3. A limiting groove 28 is opened on the bottom inner wall of the curing oven body 1, and the bottom of the limiting seat 27 is slidably installed in the limiting groove 28.

[0047] In this embodiment, it should be further explained that a controller is installed and fixed on the outer wall of the curing oven body 1. The controller is equipped with multiple control buttons. Motor 14, electric push rod 21, motor 22, and electric heating plate 29 are all electrically connected to the controller. The multiple control buttons are used to control the power supply and operation of motor 14, electric push rod 21, motor 22, and electric heating plate 29, respectively. In addition, a display screen is also installed on the controller. A temperature sensor is installed inside the curing oven body 1 to monitor the temperature value of the internal space of the curing oven body 1 in real time. The electric heating plate 29 is an adjustable electric heating plate, which can be adjusted to a suitable heating temperature according to actual usage requirements. The temperature value detected by the temperature sensor can be displayed on the display screen. Since the above-mentioned wiring connection method and control method are mature technologies in this field, they will not be described in detail here.

[0048] With the above structure, when the aluminum profile spraying curing oven provided in this application is in use, the oven door 2 is opened and the motor 22 is started to run in the forward direction. The motor 22 drives the threaded rod 23 to rotate in the forward direction. Under the action of the threaded connection between the moving seat 24 and the U-shaped plate frame 3, the moving seat 24 can drive the U-shaped plate frame 3 to gradually move out of the curing oven body 1. The U-shaped plate frame 3 drives the limiting seat 27 to slide in the limiting groove 28. When the U-shaped plate frame 3 is moved out of the curing oven body 1 to a suitable length, the motor 22 is stopped.

[0049] Next, take the sprayed aluminum profiles and place them vertically on the lower U-shaped clamps 8 on the leftmost lower disc 6. Then, control the leftmost electric push rod 21 to extend and move. The electric push rod 21 pushes the corresponding vertical rod 4, lower disc 6, lower U-shaped clamps 8 and aluminum profiles to move vertically upward until the tops of the aluminum profiles are pressed against the corresponding upper U-shaped clamps 12. Then, stop the leftmost electric push rod 21. Following the above operation steps, other sprayed aluminum profiles can be clamped and positioned between the middle upper disc 10 and lower disc 6, and between the rightmost upper disc 10 and lower disc 6.

[0050] Then, control motor 22 to run in reverse. Motor 22 drives threaded rod 23 to rotate in the opposite direction, so that moving seat 24 can drive U-shaped plate frame 3 and multiple clamped and positioned aluminum profiles to gradually move into curing oven body 1. When U-shaped plate frame 3 is completely inside curing oven body 1, stop motor 22, close oven door 2, and turn on multiple electric heating plates 29 to generate heat, so as to heat and cure aluminum profiles.

[0051] During the heat curing process, the motor 14 is controlled to drive the drive shaft 15 and three worm gears 16 to rotate. By utilizing the meshing transmission between the worm gears 16 and the worm wheel 13, the rotation of the three vertical shafts 9 can be controlled, thereby realizing the horizontal rotation of the upper disc 10 and the upper U-shaped clamping plate 12. This causes multiple aluminum profiles clamped and positioned between the upper disc 10 and the lower disc 6 to rotate horizontally. At the same time, by utilizing the meshing transmission between the gear 18 and the internal gear ring 19, the rotation of the upper rotating shaft 11 and the upper U-shaped clamping plate 12 can be controlled, thereby causing the multiple aluminum profiles clamped and positioned between the upper disc 10 and the lower disc 6 to rotate independently. This allows for flexible adjustment of the position and angle of the aluminum profiles, ensuring that all parts of the aluminum profiles receive heat fully and evenly, achieving a comprehensive and efficient curing process.

[0052] After the aluminum profile is cured, stop the operation of motor 14 and turn off multiple electric heating plates 29. When the temperature inside the curing oven 1 drops below 90°C, open the oven door 2 and control motor 22 to rotate forward. This will gradually move the U-shaped frame 3 out of the curing oven 1. Then, control the three electric push rods 21 to retract and reset to release the clamping and positioning of the aluminum profile, and the cured aluminum profile can be removed.

Claims

1. An aluminum profile spray coating curing oven, characterized in that, The equipment includes a curing oven body (1) and an oven door (2) rotatably mounted on the right side of the curing oven body (1). Multiple evenly distributed electric heating plates (29) are fixedly installed on the inner walls of both the front and rear sides of the curing oven body (1). A U-shaped frame (3) is installed inside the curing oven body (1). Three equally spaced vertical rods (4) slide through the bottom of the U-shaped frame (3). Bearings (5) are rotatably mounted on the top of each of the three vertical rods (4). A lower disc (6) is fixedly mounted on the top of each of the three bearings (5). Multiple equally spaced annular lower rotating shafts (7) are rotatably mounted on the top of the lower discs (6). Lower U-shaped clamps (8) are fixedly mounted on the top of each of the multiple lower rotating shafts (7). Three equally spaced vertical shafts (9) rotatably pass through the top of the U-shaped frame (3). An upper disc (10) is fixedly mounted on the bottom of each of the three vertical shafts (9). The top of the upper disc (10) is rotatably permeated by multiple upper rotating shafts (11) arranged in an evenly spaced ring. The bottom ends of the multiple upper rotating shafts (11) are all fixedly installed with upper U-shaped clamps (12). The multiple upper U-shaped clamps (12) are respectively located directly above the corresponding lower U-shaped clamps (8). The U-shaped plate frame (3) is provided with a driving mechanism. The driving mechanism includes three worm gears (13), a motor (14), a drive shaft (15), and three worms (16). The three worm gears (13) are respectively fixedly mounted on the top of the corresponding vertical shaft (9). The motor (14) is fixedly installed on the top of the U-shaped plate frame (3). The drive shaft (15) is fixedly installed on the output shaft end of the motor (14). The three worms (16) are all fixedly installed on the drive shaft (15). The three worms (16) are respectively meshed with the corresponding worm gears (13).

2. The aluminum profile spraying and curing oven according to claim 1, characterized in that: The top of the U-shaped frame (3) is fixedly equipped with an upper heat insulation cover (17), and the three worm gears (13), motor one (14), drive shaft (15) and three worms (16) are all located inside the upper heat insulation cover (17).

3. The aluminum profile spraying and curing oven according to claim 1, characterized in that: The drive mechanism also includes multiple gears (18) and three internal gear rings (19). The multiple gears (18) are respectively fixedly installed on the top of the corresponding upper rotating shaft (11), and the three internal gear rings (19) are all fixedly installed on the top inner wall of the U-shaped plate frame (3). The bottom ends of the three vertical shafts (9) respectively pass through the corresponding internal gear rings (19), and the gears (18) mesh with the corresponding internal gear rings (19).

4. The aluminum profile spraying and curing oven according to claim 1, characterized in that: The bottom of the U-shaped frame (3) is fixedly installed with a lower heat insulation cover (20). The bottom ends of the three vertical rods (4) are all located inside the lower heat insulation cover (20). Three electric actuators (21) are fixedly installed on the bottom inner wall of the lower heat insulation cover (20) and are distributed at equal intervals. The output shaft ends of the three electric actuators (21) are respectively fixedly connected to the bottom ends of the corresponding vertical rods (4).

5. The aluminum profile spraying and curing oven according to claim 1, characterized in that: The bottom of the U-shaped frame (3) is provided with three clearance holes, and the top ends of the three vertical rods (4) pass through the corresponding clearance holes.

6. The aluminum profile spraying and curing oven according to claim 5, characterized in that: A high-temperature resistant sealing ring is fixedly installed on the inner wall of the clearance hole, and the vertical rod (4) slides and seals with the clearance hole through the high-temperature resistant sealing ring.

7. The aluminum profile spraying and curing oven according to claim 2, characterized in that: An adjustment mechanism is provided on the curing furnace body (1). The adjustment mechanism includes a second motor (22), a threaded rod (23), and a movable seat (24). The second motor (22) is fixedly installed on the left outer wall of the curing furnace body (1). The output shaft end of the second motor (22) extends into the curing furnace body (1). The threaded rod (23) is fixedly installed on the output shaft end of the second motor (22). The movable seat (24) is threaded onto the threaded rod (23). The bottom of the movable seat (24) is fixedly connected to the top of the U-shaped plate frame (3).

8. The aluminum profile spraying and curing oven according to claim 7, characterized in that: A fixing plate (25) is fixedly installed on the top inner wall of the curing furnace body (1), and a bearing seat (26) is fixedly installed on the left side wall of the fixing plate (25). The right end of the threaded rod (23) is rotatably connected to the bearing seat (26).

9. The aluminum profile spraying and curing oven according to claim 8, characterized in that: The top surface of the upper heat shield (17) is lower than the bottom surface of the fixing plate (25).

10. The aluminum profile spraying and curing oven according to claim 4, characterized in that: The bottom of the U-shaped plate frame (3) is fixedly installed with a limiting seat (27) located on the left side of the lower heat insulation cover (20). A limiting groove (28) is opened on the bottom inner wall of the curing furnace body (1). The bottom of the limiting seat (27) is slidably installed in the limiting groove (28).

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