An apparatus for inspecting surface defects of an aluminum alloy member

Abstract

The application relates to an aluminum alloy part surface defect inspection device, which comprises a detection machine tool, a first moving rail is arranged on the detection machine tool along the length direction of the detection machine tool, at least two second moving rails are arranged on one side of the machine tool at an included angle with the moving rail, the second moving rails are arranged in parallel between each other, and the second moving rails are arranged above the first moving rail; a supporting frame is slidably connected to the first moving rail, a rotating assembly for driving the aluminum alloy part to overturn and turn over is arranged on the supporting frame, a plurality of fixed suction cups for fixing the aluminum alloy part are connected to the top of the rotating assembly; a plurality of detection sensors are slidably connected to the second moving rails, and the detection sensors are distributed on the same second moving rail or different second moving rails; the rotating assembly arranged on the supporting frame can drive the aluminum alloy part to overturn in the left-right and front-back directions, and the aluminum alloy part can be turned over, so that the aluminum alloy part is inspected in the positive and negative directions; the aluminum alloy part can be subjected to omnibearing defect inspection, and the situation that the light affects the inspection is avoided.

Description

Technical Field

[0001] This application relates to the technical field of surface inspection of aluminum alloy parts, and in particular to a device for inspecting surface defects of aluminum alloy parts. Background Technology

[0002] Aluminum alloy parts are made of aluminum as the base material with the addition of a certain amount of other alloying elements, and are one of the light metal materials. According to their composition and processing methods, they are divided into wrought aluminum alloys and cast aluminum alloys. Wrought aluminum alloys are made by first melting and casting the alloy raw materials into ingots, and then performing plastic deformation processing, such as rolling, extrusion, stretching, forging, etc., to make various plastic processed products. They are characterized by irregularity, many curved surfaces, and complex shapes. After manufacturing, they need to be inspected. While obvious defects such as cracks and wrinkles in aluminum alloy parts can be directly identified by the naked eye or touch, some small defects and whether the curved surfaces on the aluminum alloy parts meet the quality requirements (such as whether there is springback, surface dents, scratches, etc.) cannot be directly judged by the naked eye or touch.

[0003] Chinese patent application number 202411927001.0, filed on December 25, 2024, discloses a fixture and method for detecting surface dents in automotive sheet metal parts. The method involves placing the sheet metal part on four first suction cups, then using a drive motor to rotate a threaded rod, allowing the sheet metal part to move back and forth. A 3D scanner then scans the surface of the sheet metal part and creates a model. While this device utilizes a 3D scanner to detect surface dents, the scanner, being hinged, can only move in the back-and-forth direction, detecting most of the flat surface of the sheet metal part. However, the edges on the left and right sides are easily overlooked. Even if they are detected, variations in light intensity at the edges can lead to errors, making accurate edge detection impossible.

[0004] Regarding the aforementioned technologies, the inventors believe that existing devices have the drawback of being unable to accurately detect the edge position of aluminum alloy parts. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides a device for inspecting surface defects in aluminum alloy parts.

[0006] This application provides a surface defect inspection device for aluminum alloy parts, which adopts the following technical solution:

[0007] A surface defect inspection device for aluminum alloy parts includes an inspection machine tool. The machine tool has a first moving rail along its length. At least two second moving rails are provided on one side of the machine tool, forming an angle with the first moving rail. The second moving rails are parallel to each other and positioned above the first moving rail. A support frame is slidably connected to the first moving rail. The support frame has a rotating assembly for rotating and flipping the aluminum alloy parts. Multiple suction cups for fixing the aluminum alloy parts are connected to the top of the rotating assembly. Multiple inspection sensors are slidably connected to the second moving rails, with each inspection sensor distributed on the same second moving rail or on different second moving rails.

[0008] By adopting the above technical solution, aluminum alloy parts can be rotated in the left-right or front-back directions, and can be flipped between the front and back sides, thereby enabling comprehensive defect inspection of aluminum alloy parts.

[0009] Preferably, the rotating assembly includes a plurality of support blocks disposed on the support frame, a telescopic rod respectively hinged to each of the support blocks, a hinge joint connected to the end of the output shaft of the telescopic rod, and a locking member disposed on the hinge joint. The support blocks are arranged in a one-to-one correspondence with each of the fixed suction cups, and the output shaft of the telescopic rod is connected to the bottom end face of the fixed suction cup through the hinge joint. The fixed suction cups are distributed at the corners of the bottom end face of the aluminum alloy part.

[0010] By adopting the above technical solution, the aluminum alloy parts can be rotated in the front-back or left-right directions. The extension and retraction of the telescopic rod controls the raising and lowering of each corner of the aluminum alloy parts, and the rotation of the aluminum alloy parts is achieved through the hinge joint, thereby controlling the overall rotation angle of the aluminum alloy parts.

[0011] Preferably, the locking component includes a support plate disposed between the hinge joint and the fixed suction cup, two limiting plates disposed at the bottom of the support plate, a connecting rod disposed below the limiting plates and slidably connected to the telescopic rod, and a telescopic cylinder disposed on the telescopic rod and driving the connecting rod to move up and down.

[0012] By adopting the above technical solution, the hinge joint can be locked so that it can only rotate under certain conditions.

[0013] Preferably, the support frame includes two support platforms spaced apart from each other, two parallel sliding grooves respectively disposed on the top of each support platform, a screw rotatably connected in the sliding groove, two sliders screwed onto the screw, a first gear and a second gear sleeved on the screw, a third gear perpendicular to and meshing with the first gear, a belt connecting the two second gears, a drive motor driving one of the third gears to rotate, grooves respectively disposed in each slider, and a drive cylinder disposed in the groove; the sliding groove is parallel to the length direction of the first moving rail, the screw is composed of a first rod portion with a positive thread and a second rod portion with a negative thread, the first rod portion and the second rod portion are arranged opposite each other, the two sliders on the same screw are respectively screwed to the first rod portion and the second rod portion, a connecting groove perpendicular to and communicating with the two sliding grooves is provided between them, the belt is located in the connecting groove, the opening direction of each groove is opposite to the center point of the top end face of the support platform, and the piston rod of each drive cylinder is respectively connected to the corresponding support block.

[0014] By adopting the above technical solution, the distance between adjacent fixed suction cups can be adjusted to adapt to aluminum alloy parts of various sizes. The length of the fixed suction cups is achieved by a driving cylinder, and the width is achieved by a screw and a slider. This setting allows for quick adjustment of the distance.

[0015] Preferably, there are two first moving rails, which are respectively located on the front and rear sides of the testing machine tool. Each of the two first moving rails has a third moving rail parallel to it on the opposite side. The front and rear sides of the support platform on the right side slide with the two second moving rails respectively, and the front and rear sides of the support platform on the left side slide with the two first moving rails respectively through a lifting component.

[0016] By adopting the above technical solution, the two support platforms can be moved separately, thereby enabling separate inspection of the front and back sides of the aluminum alloy parts, and also allowing full utilization of both support platforms.

[0017] Preferably, the lifting assembly includes a sliding block slidably connected to the first moving rail, a first sliding groove formed on the top of the sliding block, multiple sets of lifting components arranged in the first sliding groove and connected sequentially from bottom to top, and a lifting cylinder arranged in the first sliding groove and driving the lifting components. Each set of lifting components includes two cross-arranged rods, which are connected by a pivot at the middle position. The bottoms of the two upper rods of adjacent sets of lifting components are rotatably connected to the tops of the two lower rods in a one-to-one correspondence. The bottoms of the two lowermost rods are provided with pulleys, one of which is connected to the lifting cylinder. The bottom of the support platform is provided with a second sliding groove, and the bottoms of the two uppermost rods are slidably connected to the second sliding groove.

[0018] By adopting the above technical solution, the positions of the two support platforms can be interchanged. The lifting component can raise one of the support platforms so that it can be moved to the other side of the other support platform, thus not affecting the fixing and inspection of the new aluminum alloy parts by the other support platform.

[0019] Preferably, at least one moving block is slidably connected to each of the second moving rails, and each of the detection sensors is rotatably connected to the corresponding moving block. Each of the detection sensors is an infrared imager, a 3D scanner, and an industrial CT scanner. The infrared imager and the 3D scanner are located on the same second moving rail or on separate second moving rails. The industrial CT scanner is located on the rightmost second moving rail. When the infrared imager and the 3D scanner are located on separate second moving rails, the infrared imager is located to the left of the 3D scanner. The infrared imager is used to quickly screen large-area defects in aluminum alloy parts using thermal imaging technology. The 3D scanner locates specific deviations based on the results of the infrared imager. The industrial CT scanner is used to detect internal wall defects in aluminum alloy parts and verify hidden defects.

[0020] By adopting the above technical solutions, it is possible to achieve graded inspection of aluminum alloy parts, that is, to use infrared imagers, 3D scanners and industrial CT scanners to perform preliminary screening, fine screening and internal inspection respectively, so as to make the detection of defects more comprehensive.

[0021] Preferably, the rotating assembly further includes vacuum pumps respectively installed on the two support platforms, and the output end of each vacuum pump is connected to multiple gas supply lines through connecting joints. The output end of each gas supply line located on the same support platform is connected to the corresponding fixed suction cup.

[0022] By adopting the above technical solution, the vacuum pump can evacuate the fixed suction cup, allowing the fixed suction cup to better fix the aluminum alloy parts.

[0023] Preferably, the rotating assembly further includes guide pipes respectively disposed on the outer wall of each of the telescopic rods, and each of the gas supply lines is disposed in the corresponding guide pipe.

[0024] By adopting the above technical solution, the gas pipeline is guided to move within the guide pipe, avoiding bending or drifting outwards.

[0025] Preferably, the rotating assembly further includes a storage rack respectively disposed on each of the support platforms, at least two winding shafts are rotatably connected to both sides of the storage rack, a spring is wound on the winding shaft, one end of the spring is connected to the storage rack, and each of the gas supply pipes is wound in a one-to-one correspondence with each of the winding shafts.

[0026] By adopting the above technical solution, the gas pipeline can be stored. The storage method uses a winding shaft and a spring. The gas pipeline is wound on the winding shaft. When it rises, the spring extends and when it falls, the spring rebounds and drives it to wind back onto the winding shaft.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. By installing a rotating component on the support frame, the aluminum alloy parts can be rotated left and right, front and back, and can be flipped over for inspection in both directions. In use, the aluminum alloy parts are fixed on the rotating component, which moves from the first moving rail to below the second moving rail. The detection sensor on the second moving rail detects the aluminum alloy parts. Then, the rotating component operates, rotating the aluminum alloy parts forward, backward, left, and right respectively, with the detection sensor detecting once for each rotation. Next, the rotating component flips the aluminum alloy parts over, and the above actions are repeated to inspect the reverse side of the aluminum alloy parts. This method can achieve comprehensive and accurate inspection of aluminum alloy parts, avoiding missed inspections, incorrect inspections, and light-related issues.

[0029] 2. Multiple second moving rails are set up to install various sensors, which can perform large-area initial screening of aluminum alloy parts, perform precise positioning, and find hidden defects through internal detection, thereby realizing the detection of defects in multiple directions. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of an aluminum alloy part surface defect inspection device according to the present invention.

[0031] Figure 2 yes Figure 1 A magnified view of A in the middle.

[0032] Figure 3 This is a top view of an aluminum alloy part surface defect inspection device according to the present invention.

[0033] Figure 4 yes Figure 3 A magnified view of B in the middle.

[0034] Figure 5 This is a right view of a surface defect inspection device for aluminum alloy parts according to the present invention.

[0035] Figure 6 yes Figure 5 Sectional view of AA.

[0036] Explanation of reference numerals in the attached drawings: 1. Inspection machine tool; 2. First moving rail; 3. Second moving rail; 4. Support frame; 401. Support platform; 402. Slide groove; 403. Screw; 404. Slider; 405. First gear; 406. Second gear; 407. Third gear; 408. Belt; 409. Drive motor; 410. Groove; 411. Drive cylinder; 412. Second sliding groove; 5. Rotating assembly; 51. Support block; 52. Telescopic rod; 53. Hinge joint; 54. Locking component; 541. Support plate; 542. Limiting plate; 543. Connecting rod; 544. Telescopic cylinder; 55. Vacuum pump; 56. Gas supply pipeline; 57. Guide pipe; 58. Storage rack; 59. Winding shaft; 60. Spring; 6. Fixed suction cup; 7. Detection sensor; 8. Third moving rail; 9. Lifting assembly; 91. Sliding block; 92. First sliding groove; 93. Lifting component; 931. Rod; 932. Rotating shaft; 934. Pulley; 94. Lifting cylinder. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0038] This application discloses a device for inspecting surface defects in aluminum alloy parts. (Refer to...) Figure 1-6 The system includes a testing machine tool 1, on which a first moving rail 2 is provided along its length. At least two second moving rails 3 are provided on one side of the machine tool, forming an angle with the first moving rail 2. The second moving rails 3 are arranged parallel to each other and are located above the first moving rail 2. A support frame 4 is slidably connected to the first moving rail 2. The support frame 4 is provided with a rotating component 5 that drives the aluminum alloy parts to flip and turn over. Multiple fixing suction cups 6 for fixing aluminum alloy parts are connected to the top of the rotating component 5. Multiple detection sensors 7 are slidably connected to the second moving rails 3. The detection sensors are distributed on the same second moving rail 3 or different second moving rails 3.

[0039] In this embodiment, by setting a rotating component 5 on the support frame 4, the aluminum alloy parts can be rotated in the left and right and front and back directions, and can be flipped over to be inspected in both directions. This setting can perform all-round defect inspection of the aluminum alloy parts and avoid missed inspections, incorrect inspections and light interference.

[0040] Specifically, during defect detection, the aluminum alloy part is fixed on the rotating assembly 5. The rotating assembly 5 moves to below the second moving rail 3 via the first moving rail 2. The detection sensor 7 located on the second moving rail 3 detects the aluminum alloy part. Then, the rotating assembly 5 operates to rotate the aluminum alloy part forward, backward, left, and right respectively, and the detection sensor 7 detects it once in each direction of rotation. Next, the rotating assembly 5 is used to flip the aluminum alloy part over, and the above actions are repeated to detect the reverse side of the aluminum alloy part. This method can achieve all-round and accurate detection of the aluminum alloy part.

[0041] Specifically, multiple detection sensors 7 can detect in different directions. For example, laser sensors or infrared imaging can perform large-area initial screening of aluminum alloy parts, and then 3D technology can be used for precise positioning. Finally, internal inspection is carried out to find defects in hidden locations. This multi-level detection method can accurately detect most defects in aluminum alloy parts, and is no longer limited to a single defect.

[0042] Specifically, multiple second moving rails 3 are set up to install various different sensors. For example, three second moving rails 3 are set up from left to right, and infrared imaging, 3D technology and internal detection sensors 7 are set up on these three second moving rails 3 to perform detection respectively.

[0043] In some embodiments, the rotating assembly 5 includes a plurality of support blocks 51 disposed on the support frame 4, a telescopic rod 52 respectively hinged to each support block 51, a hinge joint 53 connected to the end of the output shaft of the telescopic rod 52, and a locking member 54 disposed on the hinge joint 53. The support blocks 51 are correspondingly disposed to each of the fixed suction cups 6, and the output shaft of the telescopic rod 52 is connected to the bottom end face of the fixed suction cup 6 through the hinge joint 53. The fixed suction cups 6 are distributed at the corners of the bottom end face of the aluminum alloy part.

[0044] In this embodiment, a telescopic rod 52 and a fixed suction cup 6 are used to rotate the aluminum alloy part. During use, the extension and retraction of the telescopic rod 52 can control the raising and lowering of each corner of the aluminum alloy part, and the rotation of the aluminum alloy part can be achieved through the hinge joint 53, thereby controlling the overall rotation angle of the aluminum alloy part, which facilitates the detection sensor 7 to detect the aluminum alloy part from all directions.

[0045] Specifically, a telescopic rod 52 is positioned at each of the four corners of the bottom of the aluminum alloy part. This telescopic rod 52 is electrically operated, and the four positions are marked as upper left, lower left, upper right, and lower right, respectively. When the aluminum alloy part needs to be flipped to the right (i.e., left side up, right side down), the telescopic rods 52 located at the upper left and lower left positions begin to extend upwards, while the telescopic rods 52 located at the upper right and lower right positions shorten or remain stationary. Since the telescopic rods 52 are connected to the aluminum alloy part through hinge joints 53, the aluminum alloy part can also rotate, thereby increasing the flipping angle and allowing the detection sensor 7 to detect the edge position of the aluminum alloy part to the maximum extent.

[0046] Specifically, the support frame 4 is equipped with two sets of telescopic rods 52, each set having four rods arranged in a rectangular array. The four telescopic rods 52 in each set are positioned relative to the four corners of the aluminum alloy part, and each set can perform a flipping action. The two sets working together can complete the flipping action. When flipping, the set on the left moves upward from the upper left and lower left, and downward from the upper right and lower right, until the maximum moving distance is reached. The set on the right moves downward from the upper left and lower left, and upward from the upper right and lower right, until the maximum moving distance is reached. At this time, if the aluminum alloy part is located on the telescopic rods 52 of the left set, the extension and retraction of the telescopic rods 52 and their hinge with the support block 51 will cause the aluminum alloy part to be in a vertical state or even tilted to the right. At this time, the telescopic rods 52 of the right set are in the opposite direction. Therefore, the fixed suction cups 6 on them can attract the front of the aluminum alloy part. Then, each telescopic rod 52 either extends or shortens, so that the aluminum alloy part is in a horizontal position. At this time, the upper surface is the reverse side, thus achieving the purpose of flipping.

[0047] Specifically, the telescopic rod 52 and the support block 51 are connected by a hinge or a rotating shaft. This hinge or rotating shaft is controlled by a motor to achieve automatic control, thus avoiding the rotation of the telescopic rod 52 from affecting the state of the aluminum alloy parts.

[0048] In some embodiments, the locking member 54 includes a support plate 541 disposed between the hinge joint 53 and the fixed suction cup 6, two limiting plates 542 disposed at the bottom of the support plate 541, a connecting rod 543 disposed below the limiting plate 542 and slidably connected to the telescopic rod 52, and a telescopic cylinder 544 disposed on the telescopic rod 52 and driving the connecting rod 543 to move up and down.

[0049] In this embodiment, the limiting plate 542 is set to restrict the rotation of the hinge joint 53, thereby controlling the horizontal or inclined state of the aluminum alloy part. When the aluminum alloy part needs to rotate, the telescopic cylinder 544 drives the limiting plate 542 to move downward through the connecting rod 543, so that the hinge joint 53 can rotate with multiple degrees of freedom. When the aluminum alloy part rotates to the predetermined position, the limiting plate 542 moves upward and moves to the bottom end face of the support plate 541, thereby restricting the rotation of the support plate 541 and thus restricting the degrees of freedom of the hinge joint 53.

[0050] In some embodiments, the support frame 4 includes two support platforms 401 spaced apart from each other, two parallel sliding grooves 402 respectively disposed on the top of each support platform 401, a screw 403 rotatably connected in the sliding groove 402, two sliders 404 screwed onto the screw 403, a first gear 405 and a second gear 406 sleeved on the screw 403, a third gear 407 perpendicular to and meshing with the first gear 405, a belt 408 connecting the two second gears 406, a drive motor 409 driving one of the third gears 407 to rotate, grooves 410 respectively disposed in each slider 404, and a... The drive cylinder 411 is located in the groove 410; the slide 402 is parallel to the length direction of the first moving rail 2; the screw 403 is composed of a first rod part with a positive thread and a second rod part with a negative thread, the first rod part and the second rod part are arranged opposite each other; two sliders 404 on the same screw 403 are screwed to the first rod part and the second rod part respectively; a connecting groove is provided between the two slide grooves 402, which is perpendicular to and connected to them; the belt 408 is located in the connecting groove; the opening direction of each groove 410 is away from the center point of the top end face of the support platform 401; the piston rod of each drive cylinder 411 is connected to the corresponding support block 51 respectively.

[0051] In this embodiment, the distance between two adjacent fixed suction cups 6 can be adjusted by setting a screw 403, a slider 404, and a drive cylinder 411, so that aluminum alloy parts of different sizes can be used. The screw 403 and the slider 404 can be adjusted in the left and right direction, that is, the length can be adjusted, and the drive cylinder 411 can be adjusted in the front and back direction, that is, the width can be adjusted. During adjustment, the rotation of the drive motor 409 drives the screw 403 to rotate. Since the screw 403 is divided into two parts with opposite thread directions, and the two sliders 404 are screwed to these two parts respectively, the rotation of the screw 403 can drive the sliders 404 to move in the same or opposite directions, thereby achieving length adjustment. Since the second gears 406 on the two screws 403 are connected by the belt 408, one drive motor 409 can drive the two screws 403 to rotate coaxially. Therefore, the length of the four sliders 404 can be adjusted simultaneously, so that the two sliders 404 facing each other are on the same line. When adjusting the width, the drive cylinder 411 can be directly opened. The drive cylinder 411 drives the support block 51 to move back and forth, thereby adjusting the width. Thus, the opening of the slider 404 on the front side faces forward, and the opening of the slider 404 on the rear side faces backward, thereby achieving the drive cylinder 411 to drive the support block 51.

[0052] Of course, for irregularly shaped aluminum alloy parts, a motor can be installed in each slide groove 402, and each motor drives a screw 403 to rotate; even more, four slide grooves 402 can be set, and a screw 403 and a slider 404 can be set in each slide groove 402, which respectively drive each slider 404 to move.

[0053] Specifically, both the drive motor 409 and the drive cylinder 411 are connected to the controller. When inspecting aluminum alloy parts, the dimensions and other information of the aluminum alloy parts are pre-entered into the controller. In this way, the controller can control the drive motor 409 and the drive cylinder 411 to move to the corresponding positions based on the relevant information.

[0054] In some embodiments, there are two first moving rails 2, which are respectively located on the front and rear sides of the testing machine tool 1. Each of the two first moving rails 2 has a third moving rail 8 parallel to it on the opposite side. The front and rear sides of the support platform 401 on the right side slide with the two second moving rails 3 respectively, and the front and rear sides of the support platform 401 on the left side slide with the two first moving rails 2 through the lifting component 9 respectively.

[0055] In this embodiment, two third moving rails 8 are set between two first moving rails 2, and one support platform 401 is installed between the two first moving rails 2, and the other support platform 401 is installed between the two third moving rails 8. In this way, the two support platforms 401 are used to inspect the front or back of the aluminum alloy parts respectively, and the operation of one support platform 401 does not affect the use of the other support platform 401.

[0056] Specifically, the support platform 401 between the two first moving rails 2 positions the platform 1, and the support platform 401 between the two third moving rails 8 positions the platform 2. The platform 2 is to the left of the platform 1. The platform 2 performs preliminary screening, fine screening and / or internal inspection of the front of the aluminum alloy parts. After the inspection is completed, it is flipped into the platform 1 to perform preliminary screening and fine screening on the reverse side. If the platform 1 has performed internal inspection, internal inspection can also be performed here or not. When inspecting the reverse side, the platform 2 can be moved to the right side of the platform 1 by lifting component 9. The platform 1 then fixes a new aluminum alloy part to prepare for a new round of defect inspection. This setup can not only perform comprehensive screening of aluminum alloy parts, but also make full use of the two platforms.

[0057] In some embodiments, the lifting assembly 9 includes a sliding block 91 slidably connected to the first moving rail 2, a first sliding groove 92 opened on the top of the sliding block 91, multiple sets of lifting members 93 arranged in the first sliding groove 92 and connected sequentially from bottom to top, and a lifting cylinder 94 arranged in the first sliding groove 92 and driving the lifting members 93. Each set of lifting members 93 includes two cross-arranged rods 931. The middle position of the two rods 931 is connected by a pivot 932. The bottom of the two upper rods 931 of adjacent sets of lifting members 93 is rotatably connected to the top of the two lower rods 931 in a one-to-one correspondence. The bottom of the two lowermost rods 931 is provided with pulleys 934, one of which is connected to the lifting cylinder 94. The bottom of the support platform 401 is provided with a second sliding groove 412, and the bottom of the two uppermost rods 931 is slidably connected in the second sliding groove 412.

[0058] In this embodiment, a lifting component 93 is used to raise one of the support platforms 401, allowing it to be moved to the other side of the other support platform 401, thus not affecting the fixing and inspection of the new aluminum alloy part by the other support platform 401. During operation, the extension of the piston rod of the drive cylinder 411 causes the two pulleys 934 in the first sliding groove 92 to slide relative to each other, thereby causing the two rods 931 to rotate relative to each other and raising the support platform 401. After the height of the support platform 401 exceeds that of the other support platform 401, the support platform 401 is moved until it is moved to the other side of the other support platform 401. Then, the two pulleys 934 are controlled to slide towards each other until their height reaches the optimal position for aluminum alloy part inspection.

[0059] In some embodiments, at least one moving block is slidably connected to each of the second moving rails 3, and each detection sensor 7 is rotatably connected to the corresponding moving block. Each detection sensor 7 is an infrared imager, a 3D scanner, and an industrial CT scanner. The infrared imager and the 3D scanner are located on the same second moving rail 3 or on separate second moving rails 3. The industrial CT scanner is located on the rightmost second moving rail 3. When the infrared imager and the 3D scanner are respectively located on separate second moving rails 3, the infrared imager is located to the left of the 3D scanner. The infrared imager is used to quickly screen large-area defects of aluminum alloy parts using thermal imaging technology. The 3D scanner locates specific deviations based on the results of the infrared imager. The industrial CT scanner is used to detect inner wall defects of aluminum alloy parts and verify hidden defects.

[0060] In this embodiment, the detection sensor 7 is rotatably connected to the moving block. During detection, the detection sensor 7 can rotate, thereby enabling multi-angle detection of the aluminum alloy part. In addition, the aluminum alloy part can rotate in the front, back, left, and right directions, thereby enabling all-round detection of the aluminum alloy part, and its edge position and corners can also be clearly detected.

[0061] Specifically, the aforementioned detection sensor 7 is divided into primary screening, secondary screening, and internal inspection. Internal inspection uses an industrial CT scanner, secondary screening uses a 3D scanner, and primary screening uses an infrared imager. During inspection, primary screening, secondary screening, and internal inspection are performed sequentially. This tiered inspection method not only enables comprehensive inspection of aluminum alloy parts but also saves inspection time and improves inspection accuracy. During installation, these three sensors can be mounted on a second moving rail 3. When performing a specific level of inspection, the corresponding detection sensor 7 slides to the appropriate position for detection. However, this type of inspection… The method involves inspecting one aluminum alloy part only after both sides of the previous part have been inspected. Alternatively, the sensors for initial screening and fine screening can be installed on a second moving rail 3, and the sensors for internal detection can be installed on another moving rail. However, this method still results in the aforementioned problem: the next aluminum alloy part cannot be inspected until the fine screening on the reverse side is completed. Therefore, the three sensors are installed sequentially from left to right on a second moving rail 3 to perform initial screening, fine screening, and internal detection, respectively. In this way, while the fine screening on the reverse side of the aluminum alloy part is being performed, the initial screening of another new aluminum alloy part can begin.

[0062] As a modified embodiment, the second moving rail can be configured as a ring track around the inspection machine tool. In this case, the middle of the inspection machine tool is hollowed out, and the aluminum alloy part cannot be flipped. The front and back of the aluminum alloy part can be scanned by the movement of the sensor on the ring track. However, in this design, if the sensor moves to the bottom of the aluminum alloy part, it will be affected by the light, resulting in false detections, misdetections, or missed detections. Even if a light source is set under the inspection machine tool, the brightness and installation position of the light source will still affect the detection, especially affecting the detection results of some edge or corner positions. In addition, since the aluminum alloy part needs to be fixed with a suction cup on one side, when it moves to the reverse side, the position where the suction cup is attached cannot be detected. Even if the edge of the aluminum alloy part can be fixed, the fixed position still cannot be detected, affecting the accuracy of the final result.

[0063] In some embodiments, the rotating assembly 5 further includes vacuum pumps 55 respectively installed on the two support platforms 401. The output end of each vacuum pump 55 is connected to multiple gas supply lines 56 through a connecting connector. The output end of each gas supply line 56 located on the same support platform 401 is connected to the corresponding fixed suction cup 6.

[0064] In this embodiment, a vacuum pump 55 and a gas supply line 56 are provided on the support platform 401 to evacuate the fixed suction cup 6. When fixing the aluminum alloy parts, it is necessary to evacuate the fixed suction cup 6 to give the fixed suction cup 6 suction force to fix the aluminum alloy parts.

[0065] Specifically, the vacuum pump 55 is an oil-free vortex vacuum pump, which can not only evacuate the fixed suction cup 6, but also inflate the fixed suction cup 6 with air when removing the aluminum alloy parts to reduce the suction force of the fixed suction cup 6, thereby enabling the aluminum alloy parts to be automatically flipped; in addition, the gas supply line 56 passes through the support plate 541 and is connected to the fixed suction cup 6.

[0066] In some embodiments, the rotating assembly 5 further includes guide pipes 57 respectively disposed on the outer wall of each telescopic rod 52, and each gas supply pipe 56 is respectively disposed in the corresponding guide pipe 57.

[0067] In this embodiment, a guide tube 57 is provided on the outer wall of the telescopic rod 52 to guide the gas pipeline 56 to move within it, so as to prevent the gas pipeline 56 from moving away from the telescopic rod 52 or bending when it rises and falls with the telescopic rod 52, thereby affecting the gas delivery.

[0068] In some embodiments, the rotating assembly 5 further includes a storage rack 58 respectively disposed on each support platform. At least two winding shafts 59 are rotatably connected to both sides of the storage rack 58. A spring 60 is wound around the winding shaft 59. One end of the spring 60 is connected to the storage rack 58, and each air supply pipe 56 is wound in a one-to-one correspondence with each winding shaft 59.

[0069] In this embodiment, the storage rack 58 is provided to store the gas supply pipe 56. Since the gas supply pipe 56 is connected to the fixed suction cup 6, and the fixed suction cup 6 can be extended and retracted by the telescopic rod 52, the gas supply pipe 56 needs to have sufficient slack to rise and fall with the fixed suction cup 6. If the gas supply pipe 56 is left unattended, it will bend and become messy when it descends with the fixed suction cup 6. Therefore, a winding shaft 59 is provided on the storage rack 58 so that the gas supply pipe 56 can be wound around it. When it moves upward with the telescopic rod 52, the spring 60 rotates and extends with the winding shaft 59. When the telescopic rod 52 retracts, the spring 60 drives the winding shaft 59 to reverse, which can automatically store the gas supply pipe 56. The guide tube 57 provided on the telescopic rod 52 can guide the gas supply pipe 56 so that it can quickly return to the storage rack 58. The vacuum pump 55 can be installed on the storage rack 58.

[0070] The working principle of the aluminum alloy part surface defect inspection device in this application is as follows: By setting a rotating component 5 on the support frame 4, the aluminum alloy part can be rotated in the left-right and front-back directions, and can be flipped over. During operation, the lifting and lowering of each corner of the aluminum alloy part can be controlled by the extension and retraction of the telescopic rod 52, and the rotation of the aluminum alloy part can be realized through the hinge joint 53, thereby controlling the overall rotation angle of the aluminum alloy part; the support frame 4 is provided with two sets of telescopic rods 52, each set having 4 rods arranged in a rectangular array. The 4 telescopic rods 52 in each set are all set relative to the 4 corners of the aluminum alloy part, and each set can complete the flipping action. The two sets working together can complete the overturning action; when flipping over, the set located on the left side moves upward from the upper left and lower left, and downward from the upper right and lower right, until the maximum moving distance is reached. The set located on the right side moves downward from the upper left and lower left, and upward from the upper right and lower right, until the maximum moving distance is reached. At this time, if the aluminum alloy part is located in the set on the left side... On the telescopic rod 52, the extension and retraction of the telescopic rod 52 and its hinge with the support block 51 will cause the aluminum alloy part to be in a vertical state or even tilted to the right. At this time, the telescopic rod 52 on the right side is exactly in the opposite direction. Therefore, the fixed suction cup 6 on it can adsorb the front of the aluminum alloy part. At this time, the aluminum alloy part on the fixed suction cup 6 is facing upward. The detection sensor 7 is divided into primary screening, fine screening and internal inspection. Among them, the internal inspection uses industrial CT to detect defects on the inner wall of the aluminum alloy part and verify hidden defects. The fine screening uses a 3D scanner to locate specific deviations based on the results of the infrared imager. The primary screening uses an infrared imager to quickly screen large-area defects of the aluminum alloy part using thermal imaging technology. During the inspection, the primary screening, fine screening and internal inspection are performed in sequence to achieve graded inspection. This not only enables all-round inspection of the aluminum alloy part, but also saves inspection time and improves the accuracy of inspection.

[0071] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for inspecting surface defects in aluminum alloy parts, characterized in that: The system includes a testing machine tool (1), on which a first moving rail (2) is provided along its length. At least two second moving rails (3) are provided on one side of the machine tool, forming an angle with the first moving rail (2). The second moving rails (3) are arranged parallel to each other and are positioned above the first moving rail (2). A support frame (4) is slidably connected to the first moving rail (2). A rotating assembly (5) is provided on the support frame (4) to drive the aluminum alloy parts to rotate and flip. The top of the rotating assembly (5) is connected to multiple fixing suction cups (6) for fixing the aluminum alloy parts. The second moving rail (3) is slidably connected to multiple detection sensors (7), each of which is distributed on the same second moving rail (3) or different second moving rails (3); the support frame (4) includes two support platforms (401) spaced apart to the left and right; there are two first moving rails (2), which are respectively located on the front and rear sides of the detection machine tool (1), and each of the two first moving rails (2) has a third moving rail (8) parallel to it on the opposite side. The front and rear sides of the support platform (401) on the right side slide with the two second moving rails (3), and the support platform (401) on the left side slides with the support platform (401) on the right side. The front and rear sides of the support platform (401) are respectively slidable to the two first moving rails (2) via lifting components (9); the lifting components (9) include a sliding block (91) slidably connected to the first moving rail (2), a first sliding groove (92) opened on the top of the sliding block (91), multiple sets of lifting components (93) arranged in the first sliding groove (92) and connected sequentially from bottom to top, and a lifting cylinder (94) arranged in the first sliding groove (92) and driving the lifting components (93). Each set of lifting components (93) includes two cross-arranged rods (931). The middle position of the rod (931) is connected by a pivot (932). The bottom of the two upper rods (931) and the top of the two lower rods (931) are rotatably connected in a one-to-one correspondence between the two sets of lifting parts (93). The bottom of the two lowermost rods (931) is provided with pulleys (934). One of the pulleys (934) is connected to the lifting cylinder (94). The bottom of the support platform (401) is provided with a second sliding groove (412). The bottom of the two uppermost rods (931) is slidably connected in the second sliding groove (412).

2. The surface defect inspection device for aluminum alloy parts according to claim 1, characterized in that: The rotating assembly (5) includes a plurality of support blocks (51) on the support frame (4), a telescopic rod (52) respectively hinged to each of the support blocks (51), a hinge joint (53) connected to the end of the output shaft of the telescopic rod (52), and a locking member (54) provided on the hinge joint (53). The support blocks (51) are arranged in a one-to-one correspondence with each of the fixed suction cups (6), and the output shaft of the telescopic rod (52) is connected to the bottom end face of the fixed suction cup (6) through the hinge joint (53). Each of the fixed suction cups (6) is distributed at the corner of the bottom end face of the aluminum alloy part.

3. The surface defect inspection device for aluminum alloy parts according to claim 2, characterized in that: The locking component (54) includes a support plate (541) disposed between the hinge joint (53) and the fixed suction cup (6), two limiting plates (542) disposed at the bottom of the support plate (541), a connecting rod (543) disposed below the limiting plate (542) and slidably connected to the telescopic rod (52), and a telescopic cylinder (544) disposed on the telescopic rod (52) and driving the connecting rod (543) to move up and down.

4. The surface defect inspection device for aluminum alloy parts according to claim 3, characterized in that: The support frame (4) includes two parallel sliding grooves (402) respectively disposed on the top of each of the support platforms (401), a screw (403) rotatably connected in the sliding grooves (402), two sliders (404) screwed onto the screw (403), a first gear (405) and a second gear (406) sleeved on the screw (403), a third gear (407) perpendicular to and meshing with the first gear (405), a belt (408) connecting the two second gears (406), a drive motor (409) driving one of the third gears (407) to rotate, grooves (410) respectively disposed in each of the sliders (404), and a drive motor (409) disposed in the grooves (410). Cylinder (411); The slide groove (402) is parallel to the length direction of the first moving rail (2); The screw (403) is composed of a first rod part with a positive thread and a second rod part with a negative thread. The first rod part and the second rod part are arranged opposite each other. The two sliders (404) on the same screw (403) are respectively screwed to the first rod part and the second rod part. A connecting groove perpendicular to and communicating with the two slide grooves (402) is provided between them. The belt (408) is located in the connecting groove. The opening direction of each groove (410) is away from the center point of the top end face of the support platform (401). The piston rod of each driving cylinder (411) is respectively connected to the corresponding support block (51).

5. The surface defect inspection device for aluminum alloy parts according to claim 2, characterized in that: At least one moving block is slidably connected to each of the second moving rails (3). Each of the detection sensors (7) is rotatably connected to the corresponding moving block. Each of the detection sensors (7) is an infrared imager, a 3D scanner, and an industrial CT scanner. The infrared imager and the 3D scanner are located on the same second moving rail (3) or on separate second moving rails (3). The industrial CT scanner is located on the rightmost second moving rail (3). When the infrared imager and the 3D scanner are respectively located on separate second moving rails (3), the infrared imager is located to the left of the 3D scanner. The infrared imager is used to quickly screen large-area defects of aluminum alloy parts using thermal imaging technology. The 3D scanner locates specific deviations based on the results of the infrared imager. The industrial CT scanner is used to detect inner wall defects of aluminum alloy parts and verify hidden defects.

6. The surface defect inspection device for aluminum alloy parts according to claim 5, characterized in that: The rotating assembly (5) also includes vacuum pumps (55) respectively installed on the two support platforms (401). The output end of each vacuum pump (55) is connected to multiple gas supply lines (56) through a connecting joint. The output end of each gas supply line (56) located on the same support platform (401) is connected to the corresponding fixed suction cup (6).

7. The surface defect inspection device for aluminum alloy parts according to claim 6, characterized in that: The rotating assembly (5) also includes guide pipes (57) respectively disposed on the outer wall of each of the telescopic rods (52), and each of the gas supply pipes (56) is disposed in the corresponding guide pipe (57).

8. The surface defect inspection device for aluminum alloy parts according to claim 7, characterized in that: The rotating assembly (5) also includes a storage rack (58) respectively provided on each of the support platforms. At least two winding shafts (59) are rotatably connected to both sides of the storage rack (58). A spring (60) is wound around the winding shaft (59). One end of the spring (60) is connected to the storage rack (58), and each of the gas supply pipes (56) is wound in a one-to-one correspondence with each of the winding shafts (59).

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