On-line eddy current testing apparatus for aluminium profiles

Abstract

The application discloses an aluminum profile on-line eddy current detection equipment, which comprises a workbench, a conveying belt installed on the workbench, a detection assembly installed on the workbench, and a calibration assembly installed on the workbench. The conveying belt drives the component to be detected to transmit towards a first direction and sequentially pass through the calibration assembly and the detection assembly. The detection assembly comprises a first support fixedly connected to the workbench, a connecting seat installed on the first support, and an eddy current probe installed on the connecting seat. A roller is further arranged on one side of the connecting seat corresponding to the conveying belt, which is used for abutting and compressing the component to be detected and keeping a gap between the probe and the component to be detected. The aluminum profile on-line detection automation degree can be improved, the detection efficiency can be improved, and the equipment can better adapt to the high-speed production action of the assembly line.

Description

Technical Field

[0001] This invention relates to a testing device, specifically an online eddy current testing device for aluminum profiles. Background Technology

[0002] Eddy current testing uses the principle of electromagnetic induction to excite the probe coil with a high-frequency sinusoidal alternating current. When the probe approaches a metal surface, the alternating magnetic field around the coil induces a current on the metal surface.

[0003] This principle can be used to detect defects or changes in physical properties on the surface of aluminum profiles. However, common eddy current testing typically involves moving a handheld probe across the component under test to locate defects for easy maintenance and repair. This method is inefficient and poorly suited for production lines, as manual probe movement cannot keep up with the high-speed production processes. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an online eddy current testing device for aluminum profiles, which can improve the automation level of online testing of aluminum profiles, improve testing efficiency, and make it better adaptable to the high-speed production of production lines.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an online eddy current testing device for aluminum profiles, comprising a worktable, a conveyor belt mounted on the worktable, a detection component mounted on the worktable, and a calibration component mounted on the worktable. The conveyor belt drives the component under test to be transported in a first direction and passes through the calibration component and the detection component in sequence. The detection component includes a first bracket fixedly connected to the worktable, a connecting seat mounted on the first bracket, and an eddy current probe mounted on the connecting seat. A roller is also provided on one side of the connecting seat corresponding to the conveyor belt. The roller is used to abut and press against the component under test and to maintain a gap between the probe and the component under test.

[0006] As a further improvement of the present invention, the conveyor belt is a conveyor belt with an elastic surface, which cooperates with rollers to press the component to be tested.

[0007] As a further improvement of the present invention, the connecting seat includes a fixed seat and a movable seat. The fixed seat is provided with an elastic damping buffer. The movable seat is connected to the elastic damping buffer and can move closer to or further away from the conveyor belt to press the component to be tested. The eddy current probe is fixedly connected to the movable seat and is inserted into the fixed seat for movable cooperation with the fixed seat.

[0008] As a further improvement of the present invention, the fixed base is rotatably connected to the first bracket for adjusting the angle of the eddy current probe.

[0009] As a further improvement of the present invention, the first bracket is also equipped with a positioning detection component for detecting that the part under test has moved into place; the positioning detection component cooperates with the eddy current probe, and when the positioning detection component detects that the part under test has moved into place, the eddy current probe is activated.

[0010] As a further improvement of the present invention, the calibration component is located in the opposite direction of the first direction of the positioning detection component. The calibration component includes a fixing strip extending along the first direction, a plurality of rollers arranged at intervals along the first direction on the fixing strip, a second bracket fixed on a fixing frame of a workbench or conveyor belt, and a pulley assembly mounted on the second bracket. The rollers on the fixing strip and the pulley assembly cooperate with each other to abut against both sides of the component to be tested, so as to calibrate the component to be tested.

[0011] As a further improvement of the present invention, the pulley assembly includes a rotating seat that can be rotatably connected and adjusted on a second bracket, a sliding seat that can be slidably adjusted and connected to the rotating seat, and a plurality of pulleys mounted on the sliding seat. The lines connecting the axes of the plurality of pulleys are arranged at obtuse angles, with one side corresponding to the first direction and the other side cooperating with the fixing strip to form a flared opening.

[0012] As a further improvement of the present invention, the sliding seat includes a sliding connector connected to the rotating seat for sliding, a transition member installed on the sliding connector, a plurality of pulleys installed on the transition member, and an elastic buffer mechanism provided between the transition member and the sliding connector. The sliding connector adjusts its position by sliding on the rotating seat. The flared end of the pulley is used to abut against the end of the component to be tested and drive the transition member to slide on the sliding connector and compress the elastic buffer mechanism. The pulley presses against the transition member with elastic force through the elastic buffer mechanism and calibrates the component to be tested.

[0013] As a further improvement of the present invention, the sliding connector is provided with a first abutting part and a sliding groove facing the transition member, the transition member is provided with a slider at the position corresponding to the sliding groove, and a second abutting part is provided at the position corresponding to the first abutting part, the elastic buffer mechanism is provided between the first abutting part and the second abutting part, and the elastic buffer mechanism cooperates with the first abutting part and the second abutting part to provide elasticity to the transition member; the sliding groove is a T-shaped sliding groove, and the slider is a matching T-shaped slider.

[0014] As a further improvement of the present invention, a marking mechanism is also included. The marking mechanism is located at the first direction position of the eddy current probe and is activated in conjunction with the eddy current probe to spray and mark the positions where the eddy current probe detects abnormalities.

[0015] The beneficial effects of this invention are as follows: by setting a conveyor belt, a detection component, and a calibration component on the worktable, the component under test can sequentially pass through calibration and detection processes under the drive of the conveyor belt, realizing online continuous detection of aluminum profiles; by using the rollers on the connecting seat to abut and press against the component under test, a stable gap is maintained between the eddy current probe and the component under test, improving the stability and consistency of the detection signal; the calibration component can perform position calibration on the component under test before detection, improving detection accuracy and mitigating detection errors caused by position deviations; the overall structure is adapted to the high-speed transmission action of the production line, improving detection efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the overall structure of the present invention (concealing the conveyor belt and worktable);

[0018] Figure 3 This is a side view of the detection component of the present invention;

[0019] Figure 4 This is a schematic diagram of the pulley assembly of the present invention in an exploded state;

[0020] Figure 5 This is a schematic diagram of the bottom of the pulley assembly of the present invention in an exploded state;

[0021] Figure 6 This is a schematic diagram of the explosion state of the detection component of the present invention.

[0022] Reference numerals: 1. Workbench; 2. Conveyor belt; 3. Detection assembly; 31. First support; 32. Connecting seat; 322. Fixed seat; 3221. Elastic damping buffer; 323. Movable seat; 33. Eddy current probe; 4. Position detection assembly; 5. Component to be tested; 6. Calibration assembly; 61. Fixing bar; 62. Second support; 63. Pulley assembly; 631. Rotating seat; 632. Sliding seat; 6321. Sliding connector; 6322. Transition component; 6323. Elastic buffer mechanism; 6324. First abutment part; 6325. Slide groove; 6326. Second abutment part; 6327. Slider; 633. Pulley; 7. Marking mechanism. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0024] Reference Figure 1-6As shown, an online eddy current testing device for aluminum profiles in this embodiment includes a workbench 1, a conveyor belt 2 mounted on the workbench 1, a detection component 3 mounted on the workbench 1, and a calibration component 6 mounted on the workbench 1. The conveyor belt 2 drives the component under test 5 to be transported in a first direction and passes through the calibration component 6 and the detection component 3 in sequence. The detection component 3 includes a first bracket 31 fixedly connected to the workbench 1, a connecting seat 32 mounted on the first bracket 31, and an eddy current probe 33 mounted on the connecting seat 32. A roller is also provided on one side of the connecting seat 32 corresponding to the side of the conveyor belt 2. The roller is used to abut and press the component under test 5 and to maintain a gap between the probe and the component under test 5.

[0025] During operation, the conveyor belt 2 is continuously driven by an external drive device. The aluminum profile component to be tested is placed on the conveyor belt 2 and transported forward along the first direction (usually the conveyor belt 2's transport direction). First, it passes through the calibration component 6, which initially adjusts and restricts the position of the component to be tested 5 in the lateral direction (perpendicular to the first direction), ensuring it enters the subsequent detection area in the correct posture. Then, the component to be tested 5 enters the area of ​​the detection component 3. The rollers on the connecting seat 32 abut against the upper surface of the component to be tested 5 under their own weight or external pressure. The rolling characteristics of the rollers both press the component to be tested 5 firmly to prevent jumping or displacement during detection and reduce scratches on the surface of the component to be tested 5. Simultaneously, the installation of the rollers maintains a constant working gap between the eddy current probe 33 and the component to be tested 5. The stability of this gap directly affects the coupling effect of the eddy current detection signal. When the component to be tested 5 passes under the eddy current probe 33, the eddy current probe 33 emits signals towards the surface of the component to be tested 5. The high-frequency alternating electromagnetic field generates induced eddy currents on the metal surface. If surface defects or material inhomogeneity exist, the eddy current field distribution will change. The probe receives this change signal and transmits it to an external signal processing system for analysis and judgment. This structure improves the traditional handheld inspection method into an online automatic inspection method, improving the continuity and efficiency of inspection and mitigating the inspection error caused by the unstable distance between the probe and the workpiece during manual inspection. This allows the equipment to adapt to the high-speed production rhythm of the assembly line. In addition, the workbench 1 can adopt a metal frame structure, which facilitates the flexible arrangement and position adjustment of each component. The conveyor belt 2 can be a conventional belt conveyor or chain conveyor, as long as it can achieve continuous and stable conveying action. The first support 31 can be fixed to the workbench 1 by bolts or welding. The connection between the connecting seat 32 and the first support 31 can be selected as a fixed connection or an adjustable connection as needed. The rollers can be made of metal material covered with rubber or nylon material to take into account both wear resistance and protection of the workpiece surface.

[0026] To improve the stability of the component under test 5 during transmission and testing, in one optional scheme, the conveyor belt 2 is a conveyor belt with an elastic surface, which cooperates with rollers to press the component under test 5.

[0027] In this technical solution, the conveyor belt can be a rubber belt or a polyurethane belt with elastic deformation capability. The surface of the belt has a certain coefficient of friction, which can drive the part to be tested 5 forward stably. When the part to be tested 5 passes under the roller, the roller applies pressure from above. Under the pressure, the conveyor belt undergoes downward elastic deformation, and at the same time, it uses its own rebound force to push the part to be tested 5 upward, forming a clamping fit in the vertical direction. This elastic fit method can adapt to the testing requirements of aluminum profiles of different specifications within a certain thickness range. When the thickness of the part to be tested 5 changes, the conveyor belt automatically adjusts through elastic deformation to always maintain a tight fit with the roller. In addition, the elasticity of the conveyor belt can also be adjusted according to the testing requirements by adjusting the belt tension or changing the belt material with different hardness to adapt to the testing of aluminum profiles of different weights or different surface conditions.

[0028] Specifically, the following methods can be selected for further optimization: the connecting seat 32 includes a fixed seat 322 and a movable seat 323. The fixed seat 322 is provided with an elastic damping buffer 3221. The movable seat 323 is connected to the elastic damping buffer 3221 and can move closer to or further away from the conveyor belt 2 to press the component 5 to be tested. The eddy current probe 33 is fixedly connected to the movable seat 323 and is inserted into the fixed seat 322 and movably cooperates with the fixed seat 322.

[0029] In this structure, the fixed seat 322 serves as the base connected to the first bracket 31, providing overall structural support. The movable seat 323 forms a floating connection with the fixed seat 322 through an elastic damping buffer 3221 (such as a compression spring, gas spring, elastic rubber block, pneumatic / hydraulic rod, etc.). When the thickness of the component 5 to be measured increases or passes through a joint, the movable seat 323 is subjected to an upward pushing force, compressing the elastic damping buffer 3221 to move upward, avoiding rigid collisions that could damage the component 5 or equipment to be measured. When the thickness decreases, the elastic damping buffer 3221 rebounds, pushing the movable seat 323 downward, maintaining contact between the roller and the component 5 to be measured. The eddy current probe 33 is fixedly connected to the movable seat 323, which can be achieved through threaded tightening, clamp fixing, or bonding, ensuring the probe... The movable seat 323 moves synchronously with the movable base 323 to maintain a constant gap between the probe and the component under test 5. When the component under test 5 enters under the roller, if there is uneven thickness or weld protrusion, the movable base 323 drives the eddy current probe 33 to float up and down as a whole. The elastic damping buffer 3221 absorbs the impact energy and provides a stable clamping force to alleviate the mechanical impact caused by the sudden change in height. This floating connection structure improves the equipment's adaptability to aluminum profiles of different thicknesses and specifications, and improves the stability of the detection process. At the same time, the damping characteristics of the elastic damping buffer 3221 can reduce the vibration frequency of the movable base 323, avoid the probe from generating detection noise under high-frequency vibration, and improve the signal-to-noise ratio. In addition, the eddy current probe 33 is inserted into the fixed base 322, which provides guidance and protection for the probe.

[0030] In some options, the mounting base 322 is rotatably connected to the first bracket 31 for adjusting the angle of the eddy current probe 33.

[0031] The fixed base 322 and the first bracket 31 can be rotatably connected by means of a rotating shaft, hinge, or rotating platform. The axis of the rotating shaft can be designed to be parallel to the first direction to adjust the tilt angle of the probe. When it is necessary to detect aluminum profiles with different cross-sectional shapes (such as irregular profiles with bevels), the operator can loosen the locking device, rotate the fixed base 322 to a suitable angle, so that the detection surface of the eddy current probe 33 is parallel to or at a specific angle to the surface to be measured, and then lock it in place. By adjusting the angle, the magnetic field distribution of the eddy current probe 33 can be better matched to the geometric features of the surface to be measured, improving the signal coupling effect when detecting inclined or curved surfaces and enhancing the detection capability for specific defect directions.

[0032] To further improve the automation and accuracy of the detection, in one alternative, the first bracket 31 is also equipped with a positioning detection component 4 for detecting that the part under test 5 has moved into place; the positioning detection component 4 cooperates with the eddy current probe 33, and when the positioning detection component 4 detects that the part under test 5 has moved into place, the eddy current probe 33 is activated.

[0033] The positioning detection component 4 can be equipped with photoelectric sensors, proximity switches, laser displacement sensors, infrared sensors, etc., and is installed on the side of the first bracket 31 facing the conveyor belt 2. Its detection position is located at a certain distance in front of (upstream of) the eddy current probe 33 along the first direction. When the front end of the part to be tested 5 moves along the conveyor belt 2 to the detection area of ​​the positioning detection component 4, the sensor generates a trigger signal. This signal is transmitted to the control system. After a preset delay (the delay time can be calculated and determined according to the speed of the conveyor belt 2 and the distance between the probe and the sensor), the control system starts the eddy current probe 33, so that the probe starts working when the part to be tested 5 is exactly or about to reach its direct bottom. This coordination method avoids the equipment wear and energy waste caused by the eddy current probe 33 running idle for a long time, and extends the service life of the probe. In addition, the positioning detection component 4 can also be used for counting function to record the number of workpieces passing through, which is convenient for production statistics. The signal of this component can also be used to trigger other auxiliary actions, such as starting the subsequent marking mechanism 7, to realize the linkage control between detection and subsequent processes.

[0034] In some options, the calibration component 6 is located in the opposite direction to the first direction of the positioning detection component 4. The calibration component 6 includes a fixing bar 61 extending along the first direction, a plurality of rollers spaced apart along the first direction on the fixing bar 61, a second bracket 62 fixed on the fixing frame of the workbench 1 or the conveyor belt 2, and a pulley assembly 63 mounted on the second bracket 62. The rollers on the fixing bar 61 and the pulley assembly 63 cooperate with each other to abut against both sides of the component to be tested 5 to calibrate the component to be tested 5.

[0035] The fixing bar 61 extends along the first direction (i.e., the conveying direction) and is located on one side of the conveyor belt 2. The rollers on it can rotate freely, and the axis of the rollers is perpendicular to the first direction. The pulley assembly 63 is mounted on the second bracket 62 facing the fixing bar 61. A channel is formed between the rollers on the fixing bar 61 and the pulley assembly 63 for the test component 5 to pass through. When the test component 5 enters from the calibration assembly 6, if its position is laterally offset, the side of the test component 5 will first contact the rollers on the fixing bar 61 or the pulley assembly 63. Under the continuous pushing of the conveyor belt 2 and the rolling guidance of the rollers, the test component 5 is gradually pushed to the center of the channel, realizing the calibration of the lateral position. The rolling friction of the rollers replaces the sliding friction, reducing the risk of scratching the surface of the test component 5. At the same time, multiple rollers arranged at intervals form a continuous guide surface, improving the stability of the calibration.

[0036] Specifically, the following method can be selected for further optimization: the pulley assembly 63 includes a rotatable rotating seat 631 that is connected and adjustable on the second bracket 62, a sliding seat 632 that is slidably adjustable and connected to the rotating seat 631, and a plurality of pulleys 633 installed on the sliding seat 632. The connecting line formed by the axes of the plurality of pulleys 633 is arranged at an obtuse angle, with one side corresponding to the first direction and the other side cooperating with the fixing strip 61 to form a flared opening.

[0037] The rotating seat 631 is connected to the second bracket 62 via a rotating shaft or hinge. By rotating and adjusting, the angle and distance of the pulley assembly 63 relative to the fixed bar 61 can be changed to accommodate test parts 5 of different widths. The sliding seat 632 is slidably connected to the rotating seat 631 via a slide rail or guide groove. It can move in the direction close to or away from the fixed bar 61 to achieve fine position adjustment. The axes of several pulleys 633 mounted on the sliding seat 632 are arranged at an obtuse angle. The distance between the upstream pulley 633 and the fixed bar 61 is greater than the distance between the downstream pulley 633 and the fixed bar 61, thus forming a flared structure in the shape of a trumpet. When the component under test 5 enters the calibration assembly 6 from upstream, even with a large lateral offset, it can first contact the flared area and gradually converge towards the center under the guidance of the obliquely arranged pulleys 633, eventually entering the parallel guide area formed by the fixing bar 61 and the downstream pulley 633. This progressive calibration method improves the adaptability to the component under test 5 with large positional deviations, reduces the risk of jamming or deformation caused by forced calibration, and improves the smoothness and reliability of calibration. In addition, the adjustment mechanisms of the rotating seat 631 and the sliding seat 632 can be equipped with locking devices to fix the position after adjustment and prevent displacement during operation.

[0038] To further improve the adaptability and buffering effect of calibration component 6, in one optional scheme, sliding seat 632 includes sliding connector 6321 connected to rotating seat 631 for sliding, transition component 6322 installed on sliding connector 6321, and several pulleys 633 installed on transition component 6322. An elastic buffering mechanism 6323 is provided between transition component 6322 and sliding connector 6321. Sliding connector 6321 adjusts its position by sliding on rotating seat 631. The flared end of pulley 633 is used to meet the end of component 5 under test and drive transition component 6322 to slide on sliding connector 6321 and compress elastic buffering mechanism 6323. Pulley 633 presses against transition component 6322 with elastic force through elastic buffering mechanism 6323 and calibrates component 5 under test.

[0039] The pulley 633 is mounted on the transition piece 6322 via bearings or axle pins and moves synchronously with the transition piece 6322. An elastic buffer mechanism 6323 (such as a compression spring, disc spring, or elastomer) is disposed in the guide rod or guide groove of the sliding connector 6321, with one end abutting against the sliding connector 6321 and the other end abutting against the transition piece 6322, providing an elastic force to push the transition piece 6322 towards the fixing bar 61. When the component under test 5 enters, if its lateral offset is large or there is a slight shape error, the side of the component under test 5 first contacts the pulley 633, pushing the transition piece 6322 away from the fixing bar 61, compressing the spring... The elastic buffer mechanism 6323's reaction force acts on the test component 5 through the pulley 633, forming a flexible calibration force. This achieves position calibration while avoiding damage to the test component 5 caused by rigid compression. This elastic floating structure can adapt to width changes and shape errors within a certain range, improving the flexibility and adaptability of calibration and alleviating downtime or material jamming problems caused by dimensional deviations. At the same time, the stiffness of the elastic buffer mechanism 6323 can be selected according to the material and rigidity of the test component 5. For easily deformable materials, a softer spring can be used, while for heavy materials, a buffer component with greater stiffness can be used.

[0040] In some configurations, the sliding connector 6321 is provided with a first abutment portion 6324 and a groove 6325 facing the transition member 6322. The transition member 6322 is provided with a slider 6327 corresponding to the position of the groove 6325, and a second abutment portion 6326 corresponding to the position of the first abutment portion 6324. An elastic buffer mechanism 6323 is provided between the first abutment portion 6324 and the second abutment portion 6326. The elastic buffer mechanism 6323 cooperates with the first abutment portion 6324 and the second abutment portion 6326 to provide elasticity to the transition member 6322. The groove 6325 is a T-shaped groove 6325, and the slider 6327 is a matching T-shaped slider 6327.

[0041] By adjusting the position of the sliding connector 6321, the transition piece 6322 and the pulley 633 can be fully adapted to the edge position of the component 5 to be tested. Through the sliding fit between the transition piece 6322 and the sliding connector 6321, and the elastic buffer mechanism 6323 (which can be a compression spring), this fit provides guidance, prevents the transition piece 6322 from falling off, and provides elastic clamping, resulting in better adaptability. The port of the T-shaped groove 6325 can be closed by using a correspondingly shaped stop block for sealing.

[0042] To facilitate the marking of detected defect locations, in one optional scheme, a marking mechanism 7 is also included. The marking mechanism 7 is located in the first direction position of the eddy current probe 33 and is activated in conjunction with the eddy current probe 33 to spray and mark the abnormal locations detected by the eddy current probe 33.

[0043] The marking mechanism 7 is arranged downstream of the eddy current probe 33 along the first direction. The distance between the two is determined according to the speed of the conveyor belt 2 and the signal processing time. The marking mechanism 7 can be a device such as an inkjet printer, printhead, or marking pen. Its control signal is linked with the detection signal of the eddy current probe 33. When the eddy current probe 33 detects a defect and outputs an abnormal signal, the control system calculates the delay according to the running speed of the conveyor belt 2 and the distance between the probe and the marking mechanism 7. When the defect moves to the position directly below the marking mechanism 7, the marking action is triggered to spray ink, paint, or other visible marks at the defect position.

[0044] The aforementioned conveyor belt can also be pressed together with rollers to prevent the conveyor from shifting or slipping. At this time, the marking position is more accurate when used in conjunction with the marking mechanism 7.

[0045] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An online eddy current testing device for aluminum profiles, characterized in that, The device includes a workbench, a conveyor belt mounted on the workbench, a detection component mounted on the workbench, and a calibration component mounted on the workbench. The conveyor belt carries the component under test in a first direction, passing through the calibration component and the detection component in sequence. The detection component includes a first bracket fixedly connected to the workbench, a connecting seat mounted on the first bracket, and an eddy current probe mounted on the connecting seat. A roller is also provided on the side of the connecting seat corresponding to the conveyor belt. The roller is used to abut and press against the component under test, and to maintain a gap between the probe and the component under test. The conveyor belt is a conveyor belt with an elastic surface, which works with rollers to press the part to be tested. The connecting seat includes a fixed seat and a movable seat. The fixed seat is provided with an elastic damping buffer. The movable seat is connected to the elastic damping buffer and can move closer to or further away from the conveyor belt to press the component to be tested. The eddy current probe is fixedly connected to the movable seat and is inserted into the fixed seat for movable cooperation with the fixed seat. The calibration component is located in the opposite direction of the first direction of the positioning detection component. The calibration component includes a fixed strip extending along the first direction, a plurality of rollers arranged at intervals along the first direction on the fixed strip, a second bracket fixed on the fixed frame of the worktable or conveyor belt, and a pulley assembly mounted on the second bracket. The rollers on the fixed strip and the pulley assembly cooperate with each other to abut against both sides of the component to be tested in order to calibrate the component to be tested. The pulley assembly includes a rotatable rotating seat connected and adjustable on a second bracket, a sliding seat connected and adjustable on the rotating seat, and a plurality of pulleys mounted on the sliding seat. The lines connecting the axes of the plurality of pulleys are arranged at obtuse angles, with one side corresponding to the first direction and the other side cooperating with the fixing strip to form a flared opening. The sliding seat includes a sliding connector connected to the rotating seat for sliding, a transition piece installed on the sliding connector, and several pulleys installed on the transition piece. An elastic buffer mechanism is provided between the transition piece and the sliding connector. The sliding connector adjusts its position by sliding on the rotating seat. The flared end of the pulley is used to abut against the end of the component under test and drive the transition piece to slide on the sliding connector and compress the elastic buffer mechanism. The pulley uses the elastic buffer mechanism to press the transition piece tightly and calibrate the component under test.

2. The online eddy current testing equipment for aluminum profiles according to claim 1, characterized in that, The fixed base is rotatably connected to the first bracket and is used to adjust the angle of the eddy current probe.

3. The online eddy current testing equipment for aluminum profiles according to claim 2, characterized in that, The first bracket is also equipped with a positioning detection component for detecting that the part under test has moved into place; the positioning detection component works in conjunction with the eddy current probe, and when the positioning detection component detects that the part under test has moved into place, the eddy current probe is activated.

4. The online eddy current testing equipment for aluminum profiles according to claim 1, characterized in that, The sliding connector is provided with a first abutment and a groove facing the transition member. The transition member is provided with a slider at the position corresponding to the groove and a second abutment at the position corresponding to the first abutment. The elastic buffer mechanism is provided between the first abutment and the second abutment. The elastic buffer mechanism cooperates with the first abutment and the second abutment to provide elasticity to the transition member. The groove is a T-shaped groove and the slider is a matching T-shaped slider.

5. The online eddy current testing equipment for aluminum profiles according to claim 1, characterized in that, It also includes a marking mechanism, which is located in the first direction position of the eddy current probe and is activated in conjunction with the eddy current probe to spray and mark the positions where the eddy current probe detects abnormalities.

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