Aluminum alloy profile surface defect detection device

Abstract

The invention discloses an aluminum alloy profile surface defect detection device, and relates to the technical field of detection, the aluminum alloy profile surface defect detection device comprises a detection table, a motor is fixedly mounted on the inner wall of the detection table, a screw rod is fixedly mounted at the output end of the motor, a sliding block is mounted on the surface of the screw rod in a threaded manner, and the sliding block is slidably mounted on the inner wall of the detection table; a groove is formed in the surface of the sliding block, supporting frames are fixedly installed at the top and the bottom of the sliding block, and infrared detection devices are fixedly installed on the surfaces of the supporting frames; the anti-shaking device is arranged on the surface of the detection table, the anti-shaking device comprises an L-shaped rod, a rotating wheel, a clamping plate, a trapezoidal plate, a sliding block, a round block, a rotating plate, a limiting plate and a baffle, and the sliding block moves in the direction close to the motor to drive the L-shaped rod and the rotating wheel to move in the direction close to the motor; and the situation that the detection accuracy is affected due to shaking of the aluminum alloy profile in the detection process caused by external vibration is prevented.

Description

Technical Field

[0001] The invention relates to the field of detection technology, in particular to a device for detecting surface defects of aluminum alloy profiles. Background Art

[0002] When using aluminum alloy profiles, in order to ensure the flatness of the profiles, it is necessary to detect the surface defects of the aluminum alloy profiles.

[0003] The patent with patent announcement number CN220671298U relates to a surface defect detection device for aluminum alloy profiles, including a first operating table and a second operating table, the lower bottom surface of the first operating table is fixedly connected to a support column, the upper end of the first operating table is fixedly connected to a support rod, and the support rod is fixedly connected to the second operating table at the end away from the first operating table; in this patent, through the cooperation between the motor, the rotating shaft, the conveyor belt and the gear set mechanism, the test sample is transported forward by the first conveyor belt and the second conveyor belt, and the problem of slight bending on the surface of the sample is detected at the same time. Through the setting of the air compressor, the infrared scanner and the alarm, the air compressor sprays high-pressure gas through the air nozzle to remove fine impurities on the surface of the sample, and the infrared scanner performs pothole defect detection on the sample, and the alarm is sounded through the alarm, which solves the problem that the detection requires a lot of manpower and material resources, the efficiency is slow, and it is not convenient for large-scale implementation.

[0004] In the above patent, an air compressor sprays high-pressure gas through an air nozzle to remove fine impurities from the surface of the sample, an infrared scanner detects pothole defects on the sample, and an alarm is used to sound an alarm, thereby solving the problem that the detection requires a lot of manpower and material resources, is inefficient, and is not convenient for large-scale operations. However, during the detection process, vibrations generated by the outside world may cause the aluminum alloy profile to shake during the detection process, affecting the accuracy of the detection. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a device for detecting surface defects of aluminum alloy profiles, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a device for detecting surface defects of aluminum alloy profiles, comprising: a detection table, a motor is fixedly installed on the inner wall of the detection table, a spiral rod is fixedly installed on the output end of the motor, a sliding block is threadedly installed on the surface of the spiral rod, the sliding block is slidably installed on the inner wall of the detection table, a groove is opened on the surface of the sliding block, a support frame is fixedly installed on the top and bottom of the sliding block, and an infrared detection device is fixedly installed on the surface of the support frame; an anti-sway device, the anti-sway device is arranged on the surface of the detection table, and the anti-sway device includes an L-shaped rod, a rotating wheel, a splint, a trapezoidal plate, a slider, a round block, a rotating plate, a limit plate and a baffle, the sliding block moves in a direction close to the motor, which drives the L-shaped rod and the rotating wheel to move in a direction close to the motor, and the rotating wheel moves in a direction close to the motor, which pushes the trapezoidal plate and the splint to move away from the rotating wheel. The movement of the clamping plate in the direction away from the rotating wheel will clamp the material, and the L-shaped rod is fixedly mounted on the surface of the sliding block, and the rotating wheel is fixedly and rotatably mounted on the bottom of the L-shaped rod. A slide groove is provided inside the detection platform, and the clamping plate is slidably mounted on the inner wall of the slide groove, and the trapezoidal plate is fixedly mounted on a side of the clamping plate close to the rotating wheel. The sliding block is slidably mounted on the surface of the clamping plate, and a guide groove is provided on the surface of the detection platform. The round block is fixedly mounted on the bottom of the sliding block, and the round block is slidably mounted on the inner wall of the guide groove. The rotating plate is rotatably mounted on the surface of the sliding block, and the limit plate is fixedly mounted on the top of the rotating plate, and the baffle is fixedly mounted on the inner wall of the sliding block. The movement of the clamping plate in the direction away from the rotating wheel will drive the sliding block and the round block to move in the direction close to the material. In the process of the round block moving in the direction close to the material, it will be guided by the guide groove, so that the round block drives the sliding block and the rotating plate to move in the direction close to the material.

[0007] According to the above technical solution, a No. 1 spring is arranged between the clamping plate and the slide groove, and the No. 1 spring is used to drive the clamping plate to reset. A No. 1 torsion spring is arranged between the rotating plate and the sliding block, and the No. 1 torsion spring is used to drive the rotating plate to reset. The limit plate contacts the surface of the baffle.

[0008] According to the above technical solution, a protection device for protecting the infrared detection device is provided on the support frame, and a cleaning device is provided on the protection device. The protection device includes an air suction device, a sealing slide plate, a sliding frame, a fixed frame and a trapezoidal block. The L-shaped rod moves toward the direction close to the motor to drive the fixed frame to move toward the direction close to the motor. The movement of the fixed frame toward the direction close to the motor will drive the trapezoidal block to move toward the direction close to the motor. The air suction device is fixedly installed on the surface of the sliding block. An air suction port is provided on the surface of the air suction device. The sealing slide plate is slidably installed on the surface of the air suction port. The sliding frame is slidably installed on the top of the detection table. The fixed frame is fixedly installed on the surface of the L-shaped rod. The trapezoidal block is fixedly installed on a side of the fixed frame close to the sliding frame.

[0009] According to the above technical solution, a connecting frame is fixedly installed on the top of the sliding frame, a hinged plate is rotatably installed on the inner wall of the connecting frame, a protective cover is slidably installed on the bottom of the supporting frame, a fixed seat is fixedly installed on the bottom of the protective cover, and the other end of the hinged plate is rotatably installed on the inner wall of the fixed seat. Movement of the fixed seat in a direction away from the infrared detection device will drive the protective cover to move in a direction away from the infrared detection device, and the protective cover is opened by moving the protective cover in a direction away from the infrared detection device.

[0010] According to the above technical solution, a No. 2 spring is arranged between the sealing slide plate and the air intake port, and the No. 2 spring is used to drive the sealing slide plate to reset. A No. 3 spring is arranged between the sliding frame and the detection table, and the No. 3 spring is used to drive the sliding frame to reset. The trapezoidal block is in contact with the surface of the sliding frame.

[0011] According to the above technical solution, the cleaning device includes an L-shaped plate, a support plate, a connecting seat and a pulley. The movement of the fixed frame toward the direction close to the motor will drive the L-shaped plate and the support plate to move toward the direction close to the motor. The movement of the support plate toward the direction close to the motor will drive the brush at the bottom of the support plate to clean the top of the material. The L-shaped plate is slidably mounted on the surface of the fixed frame, the support plate is fixedly mounted on the surface of the L-shaped plate, a brush is arranged at the bottom of the support plate, the connecting seat is fixedly mounted on the surface of the support plate, and the pulley is rotatably mounted on the inner wall of the connecting seat.

[0012] According to the above technical solution, a long rod is fixedly installed on the inner wall of the detection table, a rotating plate is rotatably installed on the surface of the long rod, a fixed plate is fixedly installed on the surface of the long rod, and a connecting plate is fixedly installed on the circumferential surface of the rotating plate. When the motor reverses, it will drive the L-shaped plate to reset, and the L-shaped plate will reset along the upward movement of the rotating plate. The upward movement of the L-shaped plate will drive the support plate and the brush to move upward.

[0013] According to the above technical solution, a No. 4 spring is arranged between the L-shaped plate and the fixed frame, and the No. 4 spring is used to drive the L-shaped plate to reset. A No. 2 torsion spring is arranged between the long rod and the rotating plate, and the No. 2 torsion spring is used to drive the rotating plate to reset.

[0014] The present invention provides a device for detecting surface defects of aluminum alloy profiles. It has the following beneficial effects: (1) The invention detects both the upper and lower surfaces of the material by moving the infrared detection device toward the motor, thereby improving the detection effect. Meanwhile, the clamp moves toward the direction away from the rotating wheel to clamp the material, thereby preventing external vibration from causing the aluminum alloy profile to shake during the detection process and affecting the detection accuracy. The rotating plate moves toward the material to limit the position of the material to be detected, thereby preventing the material from sliding and affecting the detection effect.

[0015] (2) In the present invention, the upward movement of the sliding frame will push the sealing slide plate to move upward, and the upward movement of the sealing slide plate will open the air intake port, so that the air intake device can suck dust in the air into the air intake device, thereby preventing dust in the air from adhering to the material during the detection process and affecting the detection effect of the infrared detection device. At the same time, the protective cover is opened by moving the protective cover away from the infrared detection device, thereby preventing the infrared detection device from being exposed to the air for a long time when not working, thereby reducing the service life of the infrared detection device.

[0016] (3) In this invention, the pulley and the connecting seat move upward, and the upward movement of the connecting seat will drive the support plate to move upward. The upward movement of the support plate can adapt to materials of different heights. At the same time, the movement of the support plate toward the motor will drive the brush at the bottom of the support plate to clean the top of the material to prevent dust from adhering to the material and affecting the detection effect of the equipment. The brush moves upward and separates from the material to prevent the brush from continuously cleaning the material during the resetting process, causing the dust adhering to the brush to re-adhere to the material and affect the re-detection of the infrared detection device during resetting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement of part A; Figure 4 It is a schematic diagram of the cross-sectional structure of the support frame of the present invention; Figure 5 It is a schematic diagram of the structure of the anti-sway device of the present invention; Figure 6 It is a schematic diagram of the structure of the cleaning device of the present invention; Figure 7 It is a schematic diagram of the structure of the long rod and the rotating plate of the present invention.

[0018] In the figure: 1. detection table; 2. motor; 3. screw rod; 4. sliding block; 5. support frame; 6. infrared detection device; 7. L-shaped rod; 8. rotating wheel; 9. clamping plate; 10. trapezoidal plate; 11. sliding block; 12. round block; 13. rotating plate; 14. limiting plate; 15. baffle; 161. suction device; 162. sealing slide plate; 163. sliding frame; 164. fixed frame; 165. trapezoidal block; 166. connecting frame; 167. hinged plate; 168. fixed seat; 169. protective cover; 171. L-shaped plate; 172. support plate; 173. connecting seat; 174. pulley; 175. long rod; 176. rotating plate; 177. fixed plate; 178. connecting plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 4 , one embodiment of the present invention is: a device for detecting surface defects of aluminum alloy profiles, comprising: a detection platform 1, a motor 2 is fixedly installed on the inner wall of the detection platform 1, a spiral rod 3 is fixedly installed on the output end of the motor 2, a sliding block 4 is threadedly installed on the surface of the spiral rod 3, the sliding block 4 is slidably installed on the inner wall of the detection platform 1, a groove is opened on the surface of the sliding block 4, a support frame 5 is fixedly installed on the top and bottom of the sliding block 4, and an infrared detection device 6 is fixedly installed on the surface of the support frame 5; an anti-sway device, the anti-sway device is arranged on the surface of the detection platform 1, the anti-sway device comprises an L-shaped rod 7, a rotating wheel 8, a clamping plate 9, a trapezoidal plate 10, a sliding block 11, a round block 12, a rotating plate 13, a limiting plate 14 and a baffle 15, to prevent the vibration generated by the outside world from causing the aluminum alloy profile to be inspected The shaking during the measurement process affects the accuracy of the detection. The L-shaped rod 7 is fixedly mounted on the surface of the sliding block 4, and the rotating wheel 8 is fixedly and rotatably mounted on the bottom of the L-shaped rod 7. A slide groove is provided inside the detection platform 1, and the clamping plate 9 is slidably mounted on the inner wall of the slide groove. The trapezoidal plate 10 is fixedly mounted on the side of the clamping plate 9 close to the rotating wheel 8. The sliding block 11 is slidably mounted on the surface of the clamping plate 9. A guide groove is provided on the surface of the detection platform 1, and the round block 12 is fixedly mounted on the bottom of the sliding block 11. The round block 12 is slidably mounted on the inner wall of the guide groove, and the rotating plate 13 is rotatably mounted on the surface of the sliding block 11. The limit plate 14 is fixedly mounted on the top of the rotating plate 13, and the baffle 15 is fixedly mounted on the inner wall of the sliding block 11. The rotating plate 13 is moved in the direction close to the material to limit the material to be detected to prevent the material from sliding and affecting the detection effect.

[0021] A No. 1 spring is arranged between the clamping plate 9 and the slide slot, and the No. 1 spring drives the clamping plate 9 to reset. A No. 1 torsion spring is arranged between the rotating plate 13 and the slider 11, and the No. 1 torsion spring drives the rotating plate 13 to reset. The limit plate 14 contacts the surface of the baffle 15.

[0022] When this embodiment is working: by placing the material to be tested on the testing table 1, starting the motor 2, the forward rotation of the motor 2 will drive the screw rod 3 to rotate, the rotation of the screw rod 3 will drive the sliding block 4 to move in the direction close to the motor 2, the movement of the sliding block 4 in the direction close to the motor 2 will drive the support frame 5 to move in the direction close to the motor 2, the movement of the support frame 5 in the direction close to the motor 2 will drive the infrared detection device 6 to move in the direction close to the motor 2, the movement of the infrared detection device 6 in the direction close to the motor 2 will detect the upper and lower sides of the material at the same time, thereby improving the detection effect, and at the same time, the movement of the sliding block 4 in the direction close to the motor 2 will drive the L-shaped rod 7 and the rotating wheel 8 to move in the direction close to the motor 2, and the rotating wheel 8 moves in the direction close to the motor 2. Movement in the direction close to the motor 2 will push the trapezoidal plate 10 and the clamping plate 9 to move in the direction away from the rotating wheel 8. The movement of the clamping plate 9 in the direction away from the rotating wheel 8 will clamp the material to prevent external vibration from causing the aluminum alloy profile to shake during the detection process and affecting the accuracy of the detection. At the same time, the movement of the clamping plate 9 in the direction away from the rotating wheel 8 will drive the slider 11 and the round block 12 to move in the direction close to the material. During the movement of the round block 12 in the direction close to the material, it will be guided by the guide groove, so that the round block 12 drives the slider 11 and the rotating plate 13 to move in the direction close to the material. The rotating plate 13 moves in the direction close to the material to limit the material to be detected, preventing the material from sliding and affecting the detection effect.

[0023] See also Figure 1-Figure 7 On the basis of the above-mentioned embodiment, in another embodiment of the present invention, a protective device for protecting the infrared detection device 6 is provided on the support frame 5, and a cleaning device is provided on the protective device, and the protective device includes an air suction device 161, a sealing slide plate 162, a sliding frame 163, a fixed frame 164 and a trapezoidal block 165. The air suction device 161 is fixedly mounted on the surface of the sliding block 4, and an air suction port is provided on the surface of the air suction device 161. The sealing slide plate 162 is slidably mounted on the surface of the air suction port, the sliding frame 163 is slidably mounted on the top of the detection platform 1, the fixed frame 164 is fixedly mounted on the surface of the L-shaped rod 7, and the trapezoidal block 165 is fixedly mounted on a side of the fixed frame 164 close to the sliding frame 163. The dust in the air is sucked into the air suction device 161 through the air suction device 161 to prevent the dust in the air from adhering to the material during the detection process and affecting the detection effect of the infrared detection device 6.

[0024] A connecting frame 166 is fixedly installed on the top of the sliding frame 163, and a hinged plate 167 is rotatably installed on the inner wall of the connecting frame 166. A protective cover 169 is slidably installed on the bottom of the supporting frame 5, and a fixed seat 168 is fixedly installed on the bottom of the protective cover 169. The other end of the hinged plate 167 is rotatably installed on the inner wall of the fixed seat 168 to prevent the infrared detection device 6 from being exposed to the air for a long time when not in operation, which leads to a decrease in the service life of the infrared detection device 6.

[0025] A No. 2 spring is arranged between the sealing slide 162 and the air intake port, and the No. 2 spring drives the sealing slide 162 to reset. A No. 3 spring is arranged between the sliding frame 163 and the detection table 1, and the No. 3 spring drives the sliding frame 163 to reset. The trapezoidal block 165 contacts the surface of the sliding frame 163.

[0026] The cleaning device includes an L-shaped plate 171, a support plate 172, a connecting seat 173 and a pulley 174. The L-shaped plate 171 is slidably installed on the surface of the fixed frame 164, the support plate 172 is fixedly installed on the surface of the L-shaped plate 171, a brush is provided at the bottom of the support plate 172, the connecting seat 173 is fixedly installed on the surface of the support plate 172, and the pulley 174 is rotatably installed on the inner wall of the connecting seat 173 to prevent dust from adhering to the material and affecting the detection effect of the equipment.

[0027] A long rod 175 is fixedly installed on the inner wall of the detection table 1, and a rotating plate 176 is rotatably installed on the surface of the long rod 175. A fixed plate 177 is fixedly installed on the surface of the long rod 175, and a connecting plate 178 is fixedly installed on the circumferential surface of the rotating plate 176. The brush moves upward to separate from the material, thereby preventing the brush from continuously cleaning the material during the resetting process, causing the dust attached to the brush to re-attach to the material, affecting the re-detection of the infrared detection device 6 during resetting.

[0028] A No. 4 spring is arranged between the L-shaped plate 171 and the fixing frame 164, and the No. 4 spring is used to drive the L-shaped plate 171 to return to its original position. A No. 2 torsion spring is arranged between the long rod 175 and the rotating plate 176, and the No. 2 torsion spring is used to drive the rotating plate 176 to return to its original position.

[0029] When the present embodiment is working, the L-shaped rod 7 moves toward the direction close to the motor 2, driving the fixing frame 164 to move toward the direction close to the motor 2. The fixing frame 164 moves toward the direction close to the motor 2, driving the trapezoidal block 165 to move toward the direction close to the motor 2. The trapezoidal block 165 moves toward the direction close to the motor 2, pushing the sliding frame 163 to move upward. The upward movement of the sliding frame 163 pushes the sealing slide plate 162 to move upward. The upward movement of the sealing slide plate 162 opens the air intake port, allowing the air intake device 161 to suck dust in the air into the air intake device 161, so as to prevent dust in the air from adhering to the material during the detection process and affecting the infrared detection device. The detection effect of device 6 is improved, and at the same time, the upward movement of the sliding frame 163 will push the connecting frame 166 to move upward, and the upward movement of the connecting frame 166 will push the hinge plate 167 to rotate, and the rotation of the hinge plate 167 will squeeze the fixing seat 168 to move away from the infrared detection device 6, and the movement of the fixing seat 168 away from the infrared detection device 6 will drive the protective cover 169 to move away from the infrared detection device 6. The protective cover 169 is opened by moving the protective cover 169 away from the infrared detection device 6, so as to prevent the infrared detection device 6 from being exposed to the air for a long time when not working, which will reduce the service life of the infrared detection device 6.

[0030] When the material is placed on the testing table 1, the material will contact the pulley 174. When the material is too high, the pulley 174 and the connecting seat 173 will be pushed upward. The upward movement of the connecting seat 173 will drive the support plate 172 to move upward. The upward movement of the support plate 172 can adapt to materials of different heights. At the same time, when the fixing frame 164 moves in the direction close to the motor 2, the L-shaped plate 171 and the support plate 172 will be driven to move in the direction close to the motor 2. The support plate 172 moves in the direction close to the motor 2, which will drive the brush at the bottom of the support plate 172 to clean the top of the material to prevent dust from adhering to the material and affecting the detection effect of the equipment. At the same time, the L-shaped plate 171 moves closer to the motor 2. During the directional movement of the motor 2, it will contact the rotating plate 176, and the L-shaped plate 171 will push the rotating plate 176 to rotate upward. When the L-shaped plate 171 is separated from the rotating plate 176, the No. 2 torsion spring will drive the rotating plate 176 to reset. At the same time, when the motor 2 is reversed, it will drive the L-shaped plate 171 to reset. The reset of the L-shaped plate 171 will move upward along the rotating plate 176. The upward movement of the L-shaped plate 171 will drive the support plate 172 and the brush to move upward. The brush moves upward and separates from the material, preventing the brush from continuously cleaning the material during the resetting process, causing the dust attached to the brush to re-attach to the material, affecting the re-detection of the infrared detection device 6 during resetting.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting surface defects of aluminum alloy profiles, characterized in that: include: A detection platform (1), wherein a motor (2) is fixedly mounted on the inner wall of the detection platform (1), a screw rod (3) is fixedly mounted on the output end of the motor (2), a sliding block (4) is threadedly mounted on the surface of the screw rod (3), the sliding block (4) is slidably mounted on the inner wall of the detection platform (1), a groove is formed on the surface of the sliding block (4), a support frame (5) is fixedly mounted on the top and bottom of the sliding block (4), and an infrared detection device (6) is fixedly mounted on the surface of the support frame (5); An anti-sway device is arranged on the surface of the detection platform (1), and comprises an L-shaped rod (7), a rotating wheel (8), a clamping plate (9), a trapezoidal plate (10), a sliding block (11), a round block (12), a rotating plate (13), a limiting plate (14) and a baffle (15). The L-shaped rod (7) is fixedly mounted on the surface of the sliding block (4), the rotating wheel (8) is fixedly and rotatably mounted on the bottom of the L-shaped rod (7), a sliding groove is opened inside the detection platform (1), and the clamping plate (9) is slidably mounted on the inner wall of the sliding groove. The trapezoidal plate (10) is fixedly mounted on a side of the clamping plate (9) close to the rotating wheel (8), the sliding block (11) is slidably mounted on the surface of the clamping plate (9), a guide groove is provided on the surface of the detection platform (1), the round block (12) is fixedly mounted on the bottom of the sliding block (11), the round block (12) is slidably mounted on the inner wall of the guide groove, the rotating plate (13) is rotatably mounted on the surface of the sliding block (11), the limiting plate (14) is fixedly mounted on the top of the rotating plate (13), and the baffle (15) is fixedly mounted on the inner wall of the sliding block (11); Wherein, a protection device for protecting the infrared detection device (6) is provided on the support frame (5), and a cleaning device is provided on the protection device.

2. The device for detecting surface defects of aluminum alloy profiles according to claim 1, characterized in that: A first spring is provided between the clamping plate (9) and the slide groove, a first torsion spring is provided between the rotating plate (13) and the sliding block (11), and the limiting plate (14) is in surface contact with the baffle plate (15).

3. The device for detecting surface defects of aluminum alloy profiles according to claim 2, characterized in that: The protective device comprises an air suction device (161), a sealing slide plate (162), a sliding frame (163), a fixed frame (164) and a trapezoidal block (165); the air suction device (161) is fixedly mounted on the surface of the sliding block (4); an air suction port is provided on the surface of the air suction device (161); the sealing slide plate (162) is slidably mounted on the surface of the air suction port; the sliding frame (163) is slidably mounted on the top of the detection table (1); the fixed frame (164) is fixedly mounted on the surface of the L-shaped rod (7); and the trapezoidal block (165) is fixedly mounted on a side of the fixed frame (164) close to the sliding frame (163).

4. The device for detecting surface defects of aluminum alloy profiles according to claim 3, characterized in that: A connecting frame (166) is fixedly mounted on the top of the sliding frame (163), a hinged plate (167) is rotatably mounted on the inner wall of the connecting frame (166), a protective cover (169) is slidably mounted on the bottom of the supporting frame (5), a fixed seat (168) is fixedly mounted on the bottom of the protective cover (169), and the other end of the hinged plate (167) is rotatably mounted on the inner wall of the fixed seat (168).

5. The device for detecting surface defects of aluminum alloy profiles according to claim 4, characterized in that: A No. 2 spring is provided between the sealing slide plate (162) and the air inlet, a No. 3 spring is provided between the sliding frame (163) and the detection table (1), and the trapezoidal block (165) is in surface contact with the sliding frame (163).

6. The device for detecting surface defects of aluminum alloy profiles according to claim 5, characterized in that: The cleaning device comprises an L-shaped plate (171), a support plate (172), a connecting seat (173) and a pulley (174); the L-shaped plate (171) is slidably mounted on the surface of a fixing frame (164); the support plate (172) is fixedly mounted on the surface of the L-shaped plate (171); a brush is provided at the bottom of the support plate (172); the connecting seat (173) is fixedly mounted on the surface of the support plate (172); and the pulley (174) is rotatably mounted on the inner wall of the connecting seat (173).

7. The device for detecting surface defects of aluminum alloy profiles according to claim 6, characterized in that: A long rod (175) is fixedly mounted on the inner wall of the detection platform (1), a rotating plate (176) is rotatably mounted on the surface of the long rod (175), a fixed plate (177) is fixedly mounted on the surface of the long rod (175), and a connecting plate (178) is fixedly mounted on the circumferential surface of the rotating plate (176).

8. The device for detecting surface defects of aluminum alloy profiles according to claim 7, characterized in that: A No. 4 spring is provided between the L-shaped plate (171) and the fixing frame (164), and a No. 2 torsion spring is provided between the long rod (175) and the rotating plate (176).

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