Aluminum alloy profile surface defect detection method

Abstract

The invention discloses an aluminum alloy profile surface defect detection method, which comprises a working plate, the working plate comprises supporting legs, the supporting legs are fixedly connected to the bottom end of the working plate, the supporting legs are arranged at equal intervals, one end of the working plate is provided with an advancing groove for providing space for movement of an advancing mechanism, and the advancing groove is provided with an advancing groove for providing space for movement of the advancing mechanism. An aluminum alloy mold is placed at the end, close to the advancing groove, of the upper surface of the working plate. By arranging the advancing mechanism and the friction assembly, the surface of the aluminum alloy profile is rotationally wiped in the moving process of the aluminum alloy profile; by arranging the packaging mechanism and the heat sealing assembly, the outer surface of the aluminum alloy profile is wrapped with a layer of plastic film after the aluminum alloy profile is cleaned, and damage to the aluminum alloy surface coating technology in the detection process is further avoided; by arranging the detection mechanism and the marking assembly, the defect area is marked synchronously in the surface defect detection process of the aluminum alloy profile.

Description

Technical Field

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

[0002] Aluminum alloy profiles are the most widely used non-ferrous metal structural materials in industry. They are made by adding a certain amount of other chemical elements such as magnesium, carbon, silicon, etc. to aluminum bars or ingots to form materials with certain cross-sectional shapes and sizes.

[0003] During the heat treatment process of aluminum alloy profiles, due to the interference of various factors, the aluminum alloy is prone to corrosion, high-temperature oxidation or surface bubbles, which causes surface defects of the aluminum alloy profiles. The existing methods for detecting surface defects of aluminum alloy profiles are mainly implemented through manual visual inspection or automatic visual inspection. Manual visual inspection has high cost and low detection efficiency, while automatic visual inspection has high requirements for the smoothness of the aluminum alloy surface. Impurities attached to the surface of the aluminum alloy profile have a great influence on the results of automatic visual inspection.

[0004] After searching, the patent with publication number CN116539630A discloses a surface defect detection process for aluminum alloy profiles, including a limiting mechanism, the limiting mechanism includes a support plate and a plurality of limiting rollers, the support plate is fixedly connected to the upper end of the base frame, the plurality of limiting rollers are arranged at equal intervals along the length direction of the support plate, and the limiting rollers are rotatably connected to the support plate. The mounting block and the scraper are an integrated structure.

[0005] In this case, the coordination of the blowing mechanism and the wiping mechanism can effectively ensure the smoothness of the surface of the aluminum alloy profile, and further improve the accuracy of the subsequent image processing process; however, the production process of some aluminum alloy profiles includes a coating process, in which a layer of film is coated on the surface of the aluminum alloy profile to improve its corrosion resistance and increase the surface hardness; in this case, the rigid contact between the scraping teeth and the film coated on the surface of the aluminum alloy profile can easily cause the film structure to break, thereby causing new surface defects in the aluminum alloy profile; in addition, in this case, there is a lack of marking treatment for the surface defect area of ​​the aluminum alloy profile, resulting in a limited degree of automation of the device. Summary of the invention

[0006] The purpose of the present invention is to provide a method for detecting surface defects of aluminum alloy profiles, which has the advantages of non-destructive detection and synchronous marking and solves the problems raised in the background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a method for detecting surface defects of aluminum alloy profiles, comprising the following steps: S1. Rotational wiping operation: The aluminum alloy profile is placed on the upper surface of the working plate, and the external motor drives the travel mechanism to move. The travel mechanism drives the aluminum alloy profile to realize step-by-step movement and performs rotational friction on the surface of the aluminum alloy profile; S2. Heat sealing packaging operation: The aluminum alloy profile moves to the packaging mechanism, and the packaging mechanism performs heat shrink packaging on the surface of the aluminum alloy profile, so that the surface is covered with a layer of tight plastic film; S3. Defect detection operation: The aluminum alloy profile further moves to the testing mechanism, which performs a comprehensive test on the surface of the aluminum alloy profile; S4, synchronization mark operation: During the inspection process, the marking components work synchronously to mark the defective areas on the surface of the aluminum alloy profile.

[0008] Preferably, the working plate includes a supporting foot, which is fixedly connected to the bottom end of the working plate, and a plurality of supporting feet are provided with the same spacing distance. A traveling groove is opened at one end of the working plate to provide space for the movement of the traveling mechanism, and an aluminum alloy mold is placed on one end of the upper surface of the working plate close to the traveling groove.

[0009] Preferably, the traveling mechanism includes a crawler, an end of the crawler close to the aluminum alloy mold is penetrated by and rotatably connected with a connecting shaft, an outer contour of the connecting shaft is fixedly connected with a driving shaft, the driving shaft is fixedly connected to a working plate, and a friction component for rotating and wiping the outer surface of the aluminum alloy profile is provided at a position above the crawler close to the aluminum alloy mold; the friction component includes a friction roller, the axis of the friction roller is penetrated by and fixedly connected with a rotating shaft 1, both ends of the rotating shaft 1 are penetrated by and rotatably connected with a support frame 1, and the bottom end of the support frame 1 is fixedly connected to the upper surface of the working plate.

[0010] Preferably, the driving shaft is driven by an external motor and is fixedly connected to an output shaft of the motor, the top end of the track is made of a flexible material, and flexible bristles are distributed around the outer contour of the friction roller.

[0011] Preferably, the packaging mechanism includes a packaging roller, a rotating shaft 2 is penetrated and fixedly connected at the axis center of the packaging roller, a support frame 2 is penetrated and rotatably connected at both ends of the rotating shaft 2, the bottom end of the support frame 2 is fixedly connected to the upper surface of the working plate, a transmission plate is penetrated and fixedly connected at both ends of the packaging roller near the support frame 2, a transmission shaft is penetrated and fixedly connected at the end of the transmission plate away from the rotating shaft 2, a cutter head is penetrated and rotatably connected at the middle section of the transmission shaft, and a heat sealing component for heating the outer packaging of the aluminum alloy profile is provided on the side of the packaging roller away from the friction roller; the heat sealing component includes a pressure rod, a fixing rod is fixedly connected to the bottom of both ends of the pressure rod, and a heat sealing groove is provided in the middle part of the inner side of the fixing rod.

[0012] Preferably, a cigarette film made of polypropylene material is rolled up on the outer contour of the packaging roller and the free end of the cigarette film is fixedly connected to the upper surface of the working plate, a resistance wire is distributed around the interior of the cutter head and the bottom end of the outer contour of the cutter head is set with a sharp chamfer, the bottom end of the pressure rod and the interior of the heat sealing groove are both provided with a resistance wire distributed around the interior and the end of the heat sealing groove close to the packaging roller is set with a circular chamfer.

[0013] Preferably, the detection mechanism includes a rotating column, the top end of the rotating column passes through and is limitedly rotatably connected to a support frame three, the bottom end of the support frame three is fixedly connected to the upper surface of the working plate, the outer contour of the bottom end of the rotating column is fixedly connected to a clockwork spring, the bottom end of the rotating column is fixedly connected to a transmission block one, the free end of the clockwork spring is fixedly connected to the transmission block one, the transmission block one is horizontally penetrated and slidably connected to a transmission rod one, the bottom end of the transmission rod one near one end of the pressure rod is fixedly connected to a transmission block two, and the transmission block two is horizontally penetrated and slidably connected to Transmission rod 2, one end of the transmission rod 2 close to the pressure rod is sleeved with a limiting rod, the outer contours of both ends of the limiting rod are movably connected with support rods, the support rods are vertically penetrated and fixedly connected with a balance spring, the middle part of the balance spring of the support rod is sleeved on the outer contour of the limiting rod, the bottom end of the transmission block 2 is fixedly connected with a marking component for marking the surface defect area of ​​the aluminum alloy profile; the marking component includes a pressure ring 1, the bottom end of the pressure ring 1 is limitedly slidably connected with a pressure ring 2, and a camera module is arranged inside the pressure ring 1.

[0014] Preferably, the rotating column is driven by an external motor and is fixedly connected to the output shaft of the motor, and the transmission block 2 and the transmission block 1 are provided with a pressure spring sleeved on the outer contour of the transmission rod 1.

[0015] Preferably, the camera module inside the pressure ring 1 includes a light transmitter, a receiver, a camera and an image processor, and the pressure ring 2 is electrically connected to the image processor of the camera module inside the pressure ring 1.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention realizes the function of flexible cleaning by arranging a traveling mechanism and a friction assembly to rotate and wipe the surface of the aluminum alloy profile during its movement.

[0017] 2. The present invention provides a packaging mechanism and a heat-sealing component to wrap a layer of plastic film on the outer surface of the aluminum alloy profile after cleaning, thereby further avoiding damage to the coating process on the aluminum alloy surface during the detection process.

[0018] 3. The present invention provides a detection mechanism and a marking component to simultaneously mark the defective area during the process of surface defect detection on the aluminum alloy profile. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a cross-sectional view of the main structure of the present invention; Figure 3 It is a schematic diagram of the position relationship between the working plate and the traveling mechanism of the present invention; Figure 4 It is a schematic diagram of the structure of the travel mechanism and the friction assembly of the present invention; Figure 5 It is a schematic diagram of the packaging mechanism structure of the present invention; Figure 6 It is a schematic diagram of the heat sealing mechanism structure of the present invention; Figure 7 It is a schematic diagram of the structure of the detection mechanism of the present invention; Figure 8 This is a schematic diagram of the structure of the marking component of the present invention; Fig. 9 The present invention is a flow chart of the surface defect detection method of aluminum alloy profiles.

[0020] In the figure: 1. working plate; 11. supporting foot; 12. traveling groove; 13. aluminum alloy mold; 2. crawler; 21. connecting shaft; 22. driving shaft; 3. friction roller; 31. rotating shaft 1; 32. supporting frame 1; 4. packaging roller; 41. rotating shaft 2; 42. supporting frame 2; 43. transmission plate; 44. transmission shaft; 45. cutter head; 5. pressure rod; 51. fixing rod; 52. heat sealing groove; 6. rotating column; 61. supporting frame 3; 62. spring; 63. transmission block 1; 64. transmission rod 1; 65. transmission block 2; 66. transmission rod 2; 67. limiting rod; 68. support rod; 7. pressure ring 1; 71. pressure ring 2. DETAILED DESCRIPTION

[0021] 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. Embodiment 1:

[0022] See also Figures 1 to 9 The present invention provides a technical solution: a method for detecting surface defects of aluminum alloy profiles, comprising the following steps: S1. Rotational wiping operation: The aluminum alloy profile is placed on the upper surface of the working plate 1, and the external motor drives the traveling mechanism to move. The traveling mechanism drives the aluminum alloy profile to realize step-by-step movement and performs rotational friction on the surface of the aluminum alloy profile; S2. Heat sealing packaging operation: The aluminum alloy profile moves to the packaging mechanism, and the packaging mechanism performs heat shrink packaging on the surface of the aluminum alloy profile, so that the surface is covered with a layer of tight plastic film; S3. Defect detection operation: The aluminum alloy profile further moves to the testing mechanism, which performs a comprehensive test on the surface of the aluminum alloy profile; S4, synchronization mark operation: During the inspection process, the marking components work synchronously to mark the defective areas on the surface of the aluminum alloy profile.

[0023] The working plate 1 includes a supporting foot 11, which is fixedly connected to the bottom end of the working plate 1. A plurality of supporting feet 11 are provided with the same spacing. A travel groove 12 is opened at one end of the working plate 1 to provide space for the movement of the travel mechanism. An aluminum alloy mold 13 is placed on the upper surface of the working plate 1 near the travel groove 12.

[0024] In the present invention, the working plate 1 is used as the main structure of the device to provide a working space for the detection of aluminum alloy profiles; the working plate 1 is supported by the supporting feet 11; the moving groove 12 reserves activity space for the moving mechanism while restricting the movement direction of the moving mechanism; the aluminum alloy mold 13 simulates the movement of the aluminum alloy profile in actual conditions.

[0025] The aluminum alloy mold 13 is pushed by the movement of the traveling mechanism, and the outer surface of the aluminum alloy mold 13 is further rotated and wiped by the friction component to achieve the purpose of cleaning the outer surface of the aluminum alloy mold 13; the outer surface of the aluminum alloy mold 13 is plastic-wrapped by the packaging mechanism to further avoid damage to the coating layer on the outer surface of the aluminum alloy mold 13 during subsequent testing; the heat-sealing component is used to achieve thermal shrinkage of the cigarette film on the outer surface of the aluminum alloy mold 13, so that the cigarette film is evenly stretched on the outer surface of the aluminum alloy mold 13; the detection mechanism is used to detect surface defects of the aluminum alloy mold 13; and the surface defects of the aluminum alloy mold 13 are marked by the marking component. Embodiment 2:

[0026] The traveling mechanism comprises a crawler 2, one end of the crawler 2 close to the aluminum alloy mold 13 is penetrated and rotatably connected with a connecting shaft 21, a driving shaft 22 is fixedly connected to the outer contour of the connecting shaft 21, and the driving shaft 22 is fixedly connected to the working plate 1, and a friction component for rotating and wiping the outer surface of the aluminum alloy profile is provided at a position above the crawler 2 close to the aluminum alloy mold 13; The friction assembly includes a friction roller 3, a rotating shaft 31 is passed through and fixedly connected to the axis of the friction roller 3, both ends of the rotating shaft 31 are passed through and rotatably connected to a support frame 32, and the bottom end of the support frame 32 is fixedly connected to the upper surface of the working plate 1.

[0027] The driving shaft 22 is driven by an external motor and is fixedly connected to the output shaft of the motor. The top of the crawler 2 is made of a flexible material, and flexible bristles are distributed around the outer contour of the friction roller 3.

[0028] When the external motor is turned on, the driving shaft 22 drives the connecting shaft 21 to rotate synchronously. Under the action of the connecting shaft 21, the track 2 starts to rotate with the driving shaft 22 as the axis, so that the top of the track 2 intermittently contacts and squeezes the bottom of the aluminum alloy mold 13; when the track 2 contacts the aluminum alloy mold 13, the aluminum alloy mold 13 starts to move under the action of the track 2, and when the track 2 is separated from the aluminum alloy mold 13, the aluminum alloy mold 13 stops moving, thereby realizing the step-by-step movement of the aluminum alloy mold 13 through the rotation of the track 2.

[0029] When the aluminum alloy mold 13 moves to the bottom end of the friction roller 3, the upper surface of the aluminum alloy mold 13 comes into contact with the outer surface of the friction roller 3, and further under the extrusion of the aluminum alloy mold 13 by the track 2, rotational friction occurs between the aluminum alloy mold 13 and the friction roller 3, thereby realizing the wiping and cleaning work of the friction roller 3 on the surface of the aluminum alloy mold 13; the limited rotation of the friction roller 3 is realized by the rotating shaft 1 31, and the friction assembly is limitedly supported by the support frame 1 32.

[0030] Since the top of the track 2 and the outer contour of the friction roller 3 are both made of flexible materials, that is, the parts in contact with the aluminum alloy mold 13 are all flexible, which avoids damage to the coating layer on the outer surface of the aluminum alloy mold 13 and also increases the friction force on the aluminum alloy mold 13. Embodiment three:

[0031] The packaging mechanism includes a packaging roller 4, a rotating shaft 41 is penetrated and fixedly connected at the axis of the packaging roller 4, a supporting frame 42 is penetrated and rotatably connected at both ends of the rotating shaft 41, and the bottom end of the supporting frame 42 is fixedly connected to the upper surface of the working plate 1, a transmission plate 43 is penetrated and fixedly connected at both ends of the packaging roller 4 near the supporting frame 42, and a transmission shaft 44 is penetrated and fixedly connected at one end of the transmission plate 43 away from the rotating shaft 41, and a cutter head 45 is penetrated and rotatably connected at the middle section of the transmission shaft 44, and a heat sealing component for heating the outer packaging of the aluminum alloy profile is provided on the side of the packaging roller 4 away from the friction roller 3; The heat sealing assembly comprises a pressure rod 5 , the bottoms of both ends of the pressure rod 5 are fixedly connected with fixing rods 51 , and a heat sealing groove 52 is formed in the middle of the inner side of the fixing rod 51 .

[0032] A cigarette film made of polypropylene material is rolled up on the outer contour of the packaging roller 4, and the free end of the cigarette film is fixedly connected to the upper surface of the working plate 1, the interior of the cutter head 45 is surrounded by a resistance wire, and the bottom end of the outer contour of the cutter head 45 is set with a sharp chamfer, the bottom end of the pressure rod 5 and the interior of the heat sealing groove 52 are both provided with a surrounding resistance wire, and the end of the heat sealing groove 52 close to the packaging roller 4 is set with a circular chamfer.

[0033] With the further movement of the aluminum alloy mold 13, the aluminum alloy mold 13 contacts and squeezes the rolled cigarette film on the outer contour of the packaging roller 4, the cigarette film is stretched and synchronously drives the packaging roller 4 and the rotating shaft 41 to rotate, and the rotating shaft 41 further drives the transmission plate 43 to rotate. At this time, under the action of the transmission plate 43, the transmission shaft 44 starts to move in a circular motion with the rotating shaft 41 as the axis. When the transmission shaft 44 moves to the bottom end, the cutter head 45 contacts the upper surface of the working plate 1, and the sharp chamfer of the outer contour of the cutter head 45 contacts and squeezes and cuts the cigarette film. At the same time, the resistance wire arranged inside the cutter head 45 heats the cutter head 45, so that the cutter head 45 cuts the cigarette film while heating the cigarette film to make its fracture bonded, thereby completing the plastic sealing packaging work of the aluminum alloy mold 13.

[0034] The aluminum alloy mold 13 moves further until it comes into contact with the fixed rod 51. The cigarette films on both sides of the aluminum alloy mold 13 enter the heat sealing groove 52 and fit each other through the circular chamfers of the heat sealing groove 52. Further heat sealing is achieved under the action of the resistance wire inside the heat sealing groove 52. Then, the aluminum alloy mold 13 moves to the bottom end of the pressure rod 5. The resistance wire arranged at the bottom end of the pressure rod 5 evenly heats the aluminum alloy mold 13, so that the cigarette film as a whole undergoes thermal contraction, completing the tight wrapping of the cigarette film on the surface of the aluminum alloy mold 13. Embodiment 4:

[0035] The detection mechanism includes a rotating column 6, the top of which passes through and is connected to a support frame 3 61 for limited rotation, the bottom of which is fixedly connected to the upper surface of the working plate 1, a spring 62 is fixedly connected to the outer contour of the bottom of the rotating column 6, a transmission block 1 63 is fixedly connected to the bottom of the rotating column 6, the free end of the spring 62 is fixedly connected to the transmission block 1 63, the transmission block 1 63 is horizontally penetrated and slidably connected to a transmission rod 1 64, and the bottom of the transmission rod 1 64 near one end of the pressure rod 5 is fixedly connected to the pressure rod 5. A transmission block 65 is connected, the transmission block 65 is penetrated horizontally and is slidably connected with a transmission rod 66, one end of the transmission rod 66 close to the pressure rod 5 is sleeved with a limit rod 67, and the outer contours of both ends of the limit rod 67 are movably connected with a support rod 68, the support rod 68 is penetrated vertically and is fixedly connected with a balance spring, the middle part of the balance spring of the support rod 68 is sleeved on the outer contour of the limit rod 67, and the bottom end of the transmission block 65 is fixedly connected with a marking component for marking the surface defect area of ​​the aluminum alloy profile; The marking assembly includes a pressure ring 1 7 , the bottom end of which is limitedly slidably connected to a pressure ring 2 71 , and a camera module is disposed inside the pressure ring 1 7 .

[0036] The rotating column 6 is driven by an external motor and is fixedly connected to the output shaft of the motor. The transmission block 2 65 and the transmission block 1 63 are provided with a pressure spring sleeved on the outer contour of the transmission rod 1 64 .

[0037] The camera module inside the pressure ring 1 7 includes a light transmitter, a receiver, a camera and an image processor, and the pressure ring 2 71 is electrically connected to the image processor of the camera module inside the pressure ring 1 7 .

[0038] When the aluminum alloy mold 13 further moves to the bottom of the transmission block 2 65, the aluminum alloy mold 13 is disengaged from the track 2, and the aluminum alloy mold 13 stops moving. At this time, the external motor is turned on to make the rotating column 6 start to rotate. The rotation of the rotating column 6 drives the spring 62 to wind up, thereby realizing the gradual reduction of the rotation speed of the rotating column 6. The rotating column 6 simultaneously drives the transmission block 1 63 and the transmission rod 1 64 to rotate, and the transmission rod 1 64 further drives the transmission block 2 65 to rotate. This process requires overcoming the pressure spring set between the transmission block 2 65 and the transmission block 1 63. The gradual decrease in the rotation speed of the rotating column 6 causes the driving force of the rotating column 6 to gradually decrease, that is, the degree to which the transmission block 2 65 overcomes the work done by the pressure spring gradually decreases, resulting in the movement trajectory of the transmission block 2 65 being a flat spiral line from the outside to the inside, thereby realizing all-round detection of the outer surface of the aluminum alloy mold 13.

[0039] While the rotational travel of the second transmission rod 66 and the second transmission block 65 is limited by the limit rod 67, a small deflection of the second transmission block 65 in the vertical direction is achieved by the balance spring between the support rod 68 and the limit rod 67.

[0040] Due to the tight wrapping of the cigarette film on the surface of the aluminum alloy mold 13, when uneven defects appear on the surface of the aluminum alloy mold 13, there is a cavity between the depressed area and the cigarette film. At this time, the light emitted by the light emitter inside the pressure ring 1 7 is focused at the cavity, thereby forming a bright spot on the surface of the aluminum alloy mold 13. The light signal received by the receiver is stronger than that in the normal area. The image processor further sends a signal to the pressure ring 1 7, and the pressure ring 2 71 marks the depressed part; and the raised part on the surface of the aluminum alloy mold 13 will come into contact with the pressure ring 2 71, causing the pressure ring 2 71 to also mark the raised part.

[0041] 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 method for detecting surface defects of an aluminum alloy profile, comprising the following steps: S1. Rotational wiping operation: The aluminum alloy profile is placed on the upper surface of the working plate (1), and an external motor drives the travel mechanism to move. The travel mechanism drives the aluminum alloy profile to achieve step-by-step movement and performs rotational friction on the surface of the aluminum alloy profile; S2. Heat sealing packaging operation: The aluminum alloy profile moves to the packaging mechanism, and the packaging mechanism performs heat shrink packaging on the surface of the aluminum alloy profile, so that the surface is covered with a layer of tight plastic film; S3. Defect detection operation: The aluminum alloy profile further moves to the testing mechanism, which performs a comprehensive test on the surface of the aluminum alloy profile; S4, synchronization mark operation: During the inspection process, the marking components work synchronously to mark the defective areas on the surface of the aluminum alloy profile.

2. The method for detecting surface defects of aluminum alloy profiles according to claim 1, characterized in that: The working plate (1) comprises a supporting foot (11), wherein the supporting foot (11) is fixedly connected to the bottom end of the working plate (1), and a plurality of supporting feet (11) are provided and are spaced at the same distance.

3. The method for detecting surface defects of aluminum alloy profiles according to claim 2, characterized in that: One end of the working plate (1) is provided with a travel groove (12) which provides space for the movement of the travel mechanism, and an aluminum alloy mold (13) is placed on one end of the upper surface of the working plate (1) close to the travel groove (12).

4. The method for detecting surface defects of aluminum alloy profiles according to claim 3, characterized in that: The travel mechanism comprises a crawler (2), one end of the crawler (2) close to the aluminum alloy mold (13) is penetrated by a connecting shaft (21) and is rotatably connected thereto, a driving shaft (22) is fixedly connected to the outer contour of the connecting shaft (21), and the driving shaft (22) is fixedly connected to the working plate (1), and a friction component for rotatably wiping the outer surface of the aluminum alloy profile is provided above the crawler (2) close to the aluminum alloy mold (13); The friction assembly comprises a friction roller (3), a rotating shaft (31) passing through and fixedly connected to the axis of the friction roller (3), a support frame (32) passing through and rotatably connected to both ends of the rotating shaft (31), and a bottom end of the support frame (32) being fixedly connected to the upper surface of the working plate (1); The drive shaft (22) is driven by an external motor and the drive shaft (22) is fixedly connected to an output shaft of the motor; The packaging mechanism comprises a packaging roller (4), wherein a second rotating shaft (41) is passed through and fixedly connected at the axis of the packaging roller (4), a second supporting frame (42) is passed through and rotatably connected at both ends of the second rotating shaft (41), the bottom end of the second supporting frame (42) is fixedly connected to the upper surface of the working plate (1), a transmission plate (43) is passed through and fixedly connected at both ends of the packaging roller (4) near the second supporting frame (42), the end of the transmission plate (43) away from the second rotating shaft (41) is passed through and fixedly connected by a transmission shaft (44), the middle section of the transmission shaft (44) is passed through and rotatably connected by a cutter head (45), and a heat sealing component for heating the outer packaging of the aluminum alloy profile is provided on the side of the packaging roller (4) away from the friction roller (3); The heat sealing assembly comprises a pressure rod (5), the bottoms of both ends of the pressure rod (5) are fixedly connected to fixing rods (51), and a heat sealing groove (52) is provided in the middle of the inner side of the fixing rod (51); The detection mechanism comprises a rotating column (6), the top end of the rotating column (6) penetrates and is connected to a support frame three (61) in a limited rotation manner, the bottom end of the support frame three (61) is fixedly connected to the upper surface of the working plate (1), the outer contour of the bottom end of the rotating column (6) is fixedly connected to a spring (62), the bottom end of the rotating column (6) is fixedly connected to a transmission block one (63), the free end of the spring (62) is fixedly connected to the transmission block one (63), the transmission block one (63) is horizontally penetrated and slidably connected to a transmission rod one (64), the bottom end of the transmission rod one (64) is close to one end of the pressure rod (5) A transmission block 2 (65) is fixedly connected, the transmission block 2 (65) is horizontally penetrated and slidably connected with a transmission rod 2 (66), one end of the transmission rod 2 (66) close to the pressure rod (5) is sleeved with a limit rod (67), the outer contours of both ends of the limit rod (67) are movably connected with support rods (68), the support rods (68) are vertically penetrated and fixedly connected with a balance spring, the middle part of the balance spring of the support rod (68) is sleeved on the outer contour of the limit rod (67), and the bottom end of the transmission block 2 (65) is fixedly connected with a marking component for marking defective areas on the surface of the aluminum alloy profile.

5. The method for detecting surface defects of aluminum alloy profiles according to claim 4, characterized in that: The top end of the crawler (2) is made of a flexible material, and flexible bristles are distributed around the outer contour of the friction roller (3).

6. The method for detecting surface defects of aluminum alloy profiles according to claim 5, characterized in that: A cigarette film made of polypropylene material is rolled up on the outer contour of the packaging roller (4), and the free end of the cigarette film is fixedly connected to the upper surface of the working plate (1); a resistance wire is distributed around the inside of the cutter head (45), and the bottom end of the outer contour of the cutter head (45) is provided with a sharp chamfer; the bottom end of the pressure rod (5) and the inside of the heat sealing groove (52) are both provided with a resistance wire distributed around, and the end of the heat sealing groove (52) close to the packaging roller (4) is provided with a circular chamfer.

7. The method for detecting surface defects of aluminum alloy profiles according to claim 4, characterized in that: The marking assembly comprises a pressure ring 1 (7), the bottom end of the pressure ring 1 (7) is limitedly slidably connected to a pressure ring 2 (71), and a camera module is arranged inside the pressure ring 1 (7).

8. The method for detecting surface defects of aluminum alloy profiles according to claim 7, characterized in that: The rotating column (6) is driven by an external motor and the rotating column (6) is fixedly connected to the output shaft of the motor. The transmission block 2 (65) and the transmission block 1 (63) are provided with a pressure spring sleeved on the outer contour of the transmission rod 1 (64).

9. The method for detecting surface defects of aluminum alloy profiles according to claim 7, characterized in that: The camera module inside the pressure ring 1 (7) comprises a light transmitter, a receiver, a camera and an image processor, and the pressure ring 2 (71) is electrically connected to the image processor of the camera module inside the pressure ring 1 (7).

Images