A flange detection device and method based on multi-model mixed detection

Abstract

The application discloses a flange detection equipment and method based on multi-model mixed detection, relates to the technical field of detection equipment, and specifically discloses the following technical scheme: an operator places a flange to be detected on a feeding mechanism, the model of the flange is detected through visual detection, then the flange is moved to a three-jaw chuck for fixation through electric clamping jaws, the flange is cleaned through a cleaning mechanism, after cleaning, the flange is dried through airflow and high-speed rotation, then a detection camera is moved above a detection station through a switching mechanism, the position and angle of the detection camera are adjusted according to the model of the flange, the angle of a ring-shaped light source is adjusted at the same time, the upper end face and the hole of the flange are detected, then the flange is turned over, the lower end face of the flange is detected, when there is a defect, the position of a marking mechanism is adjusted to the defect for marking the defect, and after detection, the flange is discharged through electric clamping jaws and a linear module.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, specifically a flange testing device and method based on mixed testing of multiple models. Background Technology

[0002] After the flanges are manufactured, they need to be tested. Because there are many types of flange parts and different sizes of flanges, traditional flange testing equipment is usually specialized equipment with poor versatility and limited testing range.

[0003] Furthermore, flanges require cleaning before inspection, including checking their inner bore, upper and lower end faces, and flatness. Traditional inspection equipment necessitates these steps at different workstations, requiring the flange workpiece to be inspected to be transferred between these stations, increasing inspection time. Moreover, re-fixing with fixtures is required at different workstations, further extending inspection time and introducing new positioning deviations. The cumulative effect of multiple positioning deviations further impacts inspection accuracy. Additionally, existing inspection equipment struggles to adjust the inspection camera and light source according to different flange models, easily leading to blind spots or overexposure during visual inspection, affecting the inspected structure and resulting in poor versatility and a limited inspection range. Summary of the Invention

[0004] The purpose of this invention is to provide a flange testing device based on mixed testing of multiple models, so as to solve the problem that the same device is difficult to test different models of flanges in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A flange testing device based on mixed testing of multiple models. The testing device includes a feeding mechanism and a switching mechanism. A transfer mechanism is provided on one side of the feeding mechanism, and a cleaning mechanism and a testing mechanism are provided on the other side of the switching mechanism. The testing mechanism includes a testing camera, a fixed base, and an angle adjustment unit. An adjustment base is provided on one side of the testing camera, an automatic marking unit is provided on one side of the adjustment base, and a supplementary lighting unit is provided on the adjustment base. The angle adjustment unit is hinged to the adjustment base and the fixed base respectively, and a position adjustment unit is provided on one side of the fixed base. The adjusting seat has a protrusion, which is spherical; The fixed base is provided with a sliding groove; The protrusion and the sliding groove are slidably connected.

[0006] Workers place the flanges to be inspected into the loading mechanism, arranging them individually for transport. A camera within the loading mechanism performs visual inspection, converting light signals into electrical signals via the camera's image sensor to generate an image, which is then sent to the control system. The system detects flange features in the image or uses OCR to identify text information on the flange. The image is then compared to a pre-stored database of flange models to determine the flange's type. A transfer mechanism located to one side of the loading mechanism moves the flange to the inspection station. A switching mechanism moves the cleaning mechanism above the inspection station, activating it to clean the flange and prevent contamination from affecting the inspection results. After cleaning, the switching mechanism removes the cleaning mechanism, and the inspection mechanism moves above the inspection station. Flange inspection reduces the time spent transferring flanges between different workstations, thereby improving inspection efficiency. Simultaneously, based on the flange model, the control system drives the position adjustment unit to adjust the position of the fixed seat, thus adjusting the height and horizontal position of the inspection camera. The spherical protrusion of the adjustment seat slides along the sliding groove of the fixed seat. Multiple angle adjustment units are hinged to the adjustment seat and fixed seat respectively. The control system adjusts the extension and retraction of the angle adjustment units, causing the protrusion to slide along the sliding groove, thereby adjusting the angle between the inspection camera and the flange. A supplementary lighting unit illuminates the flange. After all components are adjusted, visual inspection is performed by the inspection camera. Simultaneously, the inspection station rotates the flange to complete the circumferential inspection. Upon detecting defects, an automatic marking unit marks the defect location, facilitating subsequent flange rework or sorting.

[0007] Furthermore, the angle adjustment unit includes a housing and a moving rod. An adjustment motor is provided on the housing. The housing and the fixed seat are hinged together. A lead screw is provided on the output end of the adjustment motor. The lead screw and the moving rod are connected by a transmission. The moving rod and the adjustment seat are hinged together. The moving rod and the housing are slidably connected.

[0008] An adjusting motor is installed inside a sleeve-shaped housing. When the adjusting motor is started, it drives the lead screw on the output end of the adjusting motor to rotate. The lead screw and the moving rod are connected by a nut transmission. The moving rod and the housing are slidably connected. The cross-sections of the housing and the moving rod are not circular, so that the moving rod can only move along the axial direction of the lead screw. The housing and the fixed seat are hinged together, and the moving rod and the adjusting seat are hinged together. Thus, the angle of the detection camera is adjusted according to the extension and retraction of the moving rod.

[0009] Furthermore, the supplementary lighting unit includes an electric telescopic rod and a ring light source. The electric telescopic rod is hinged to the ring light source and the adjustment seat respectively. A coaxial light source is provided on one side of the adjustment seat, and the coaxial light source is coaxial with the detection camera.

[0010] A coaxial light source, fixed to the adjustment base and coaxial with the camera axis, illuminates the flange when inspecting its inner hole or mounting hole. A ring light source, positioned outside the coaxial light source, illuminates the flange end face when inspecting it. When inspecting flanges of different specifications, three electrically operated telescopic rods are distributed around the circumference of the ring light source. The two ends of each electric telescopic rod are connected to the ring light source and the adjustment base respectively via spherical hinges, with the hinge points not at the same location. This allows the ring light source to rotate along the hinges when the electric telescopic rods extend or retract, thereby adjusting the angle. This allows the incident angle of the ring light source to be adjusted according to the different reflectivity caused by the flange material and processing precision, thus preventing overexposure from affecting the inspected structure.

[0011] Furthermore, the position adjustment unit includes a cross module, with an electric cylinder on one side of the cross module and a fixed base located at the moving end of the cross module.

[0012] By setting up an electric cylinder, which is connected to a cross module and a fixed base, the height of the fixed base can be adjusted, thereby adjusting the height of the inspection camera. By setting up the cross module, the horizontal position of the fixed base can be adjusted, thereby adjusting the position of the inspection camera, allowing it to be moved to different holes on the flange for easy inspection.

[0013] Furthermore, the automatic marking unit includes a piezoelectric nozzle, with a storage box located on one side of the piezoelectric nozzle.

[0014] When a defect is detected in the flange, the piezoelectric nozzle of the position adjustment unit moves to above the defect, and the control system controls the piezoelectric nozzle to spray the marking liquid in the storage tank onto the defect to complete the marking.

[0015] Furthermore, the testing equipment also includes a frame, on which a fixing mechanism is provided; The fixing mechanism includes a rotating motor and a worktable. A support base is provided on one side of the rotating motor, and a rotating shaft is provided on the support base. A tilting motor is provided on one side of the support base. The output end of the tilting motor is connected to the rotating shaft. The rotating shaft is connected to the worktable. A three-jaw chuck is provided on the worktable. A fixing block is provided on the three-jaw chuck. The workbench is equipped with an observation hole; The three-jaw chuck has a through hole.

[0016] A three-jaw chuck is installed on the worktable of the support base to clamp the flange. The worktable is rotatably connected to the support base via a rotating shaft. A tilting motor fixed to one side of the support base drives the worktable to tilt so that the lower or upper end face of the flange faces the inspection camera. Observation holes and through holes are respectively set on the worktable and the three-jaw chuck so that the lower end face of the flange can be detected through the observation holes and through holes. The rotating motor drives the support base to rotate, thereby causing the flange to rotate along its axis, thus completing the circumferential defect detection.

[0017] Furthermore, the cleaning mechanism includes a protective cover, inside which a cleaning nozzle is installed, a lifting module is located on one side of the protective cover, and a switching valve is installed on the protective cover, which is connected to the nozzle pipeline.

[0018] By setting up a lifting module, the protective cover can be moved downwards to cover the entire workbench and prevent the cleaning fluid from splashing out. The cleaning nozzle is connected to the air source device or the cleaning fluid tank through a switching valve. The cleaning fluid is sprayed from the nozzle by the delivery pump in the cleaning fluid tank to clean the flange. After cleaning, the pipeline is switched to the air source device through the switching valve so that the airflow is sprayed from the cleaning nozzle to dry the flange. By starting the rotating motor, the flange is driven to rotate at high speed to shake off the cleaning fluid on the flange.

[0019] Furthermore, the switching mechanism includes a geared motor, and a switching disk is provided on the output end of the geared motor. The switching disk is rotatably connected to the frame.

[0020] The cleaning and testing mechanisms are mounted on a switching plate. A geared motor fixed on the frame drives the switching plate via a keyway. The switching plate is mounted on the frame via bearings, enabling the geared motor to drive the switching plate to rotate, thereby moving the cleaning and testing mechanisms.

[0021] Furthermore, the feeding mechanism includes a conveyor belt with a limit plate and an industrial camera on one side of the conveyor belt.

[0022] The operator places the flange on the conveyor belt. By setting a limit plate on the conveyor belt, the flange can only be transported one by one along the conveyor belt. By setting an industrial camera above the conveyor belt on a fixed frame, the model of the flange is detected by visual inspection.

[0023] Furthermore, the transfer mechanism includes a linear module, and the moving end of the linear module is equipped with an electric gripper.

[0024] By setting up two linear modules that intersect in a cross shape, and installing electric grippers on the moving end of the linear modules, the modules can move the electric grippers to pick up the flanges on the conveyor belt, move them through the linear modules, and then transfer the flanges to the inspection station.

[0025] As shown in the figure, the detection method includes the following steps: S1: Place the flange to be inspected onto the conveyor belt, arrange them individually for transport, and inspect the model of the flange through the vision of the industrial camera. Then, the flange is picked up by the electric gripper and moved to the three-jaw chuck on the worktable by the linear module. The three-jaw chuck clamps the flange and automatically centers it. Then, the electric gripper releases the flange and moves it away. S2: The lifting module drives the protective cover to cover the entire workbench. Then, the cleaning fluid is sprayed from the nozzle through the delivery pump in the external cleaning fluid tank to clean the flange. After cleaning, the pipeline is switched to the air source device to dry the flange through airflow. At the same time, the motor drives the flange to rotate at high speed to spin dry the cleaning fluid. S3: The switching disc is driven to rotate by a geared motor, which moves the inspection camera to above the flange at the inspection station. The position of the inspection camera is adjusted by the cross module, and the angle of the inspection camera is adjusted by the motor-driven moving rod so that it is aligned with the inspection area. At the same time, the angle of the ring light source is adjusted by the electric telescopic rod. Then, the flange is rotated by the rotating motor, and the inspection camera performs circumferential defect inspection on the upper end face of the rotating flange. Then, the position of the inspection camera is adjusted again by the cross module to inspect the holes of the flange, and the defect location is marked by the marker. S4: The flange is flipped by a flip motor so that the lower end face of the flange faces the inspection camera. Then, the position of the inspection camera is adjusted by the cross module and the angle of the ring light source is adjusted to drive the flange to rotate. The inspection camera performs circumferential defect detection on the lower end face of the rotating flange and marks the defect location with a marker. S5: After the inspection is completed, the inspected flange is picked up by the electric gripper, and the electric gripper is moved to the unloading position by the linear module to unload the flange.

[0026] Compared with the prior art, the beneficial effects of the present invention are: 1. By installing the cleaning and testing mechanisms on the switching panel, cleaning and testing can be completed in one station, eliminating the need to switch flanges between different stations, thus shortening the testing time and improving efficiency.

[0027] 2. By setting an adjustment seat that can rotate freely within a certain range, the angle adjustment unit can be used to change the angle of the adjustment seat. In conjunction with the position adjustment unit, the camera can be adjusted at multiple angles, enabling it to adjust the focus angle for flanges of different specifications. This avoids the slight tilt of the flange due to clamping or processing errors from affecting the clarity of the image and ensures the accuracy of the inspection.

[0028] 3. By setting an adjustable ring light source, the incident angle of the light source can be adjusted according to the material of the flange and the processing of the end face, avoiding specular reflection and thus avoiding overexposure during visual inspection. This enhances the brightness when inspecting dark-surface flanges and reduces the brightness when inspecting bright-surface flanges, thereby improving the accuracy of the inspection. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the detection mechanism of the present invention; Figure 4 yes Figure 3 A magnified view of a portion of C; Figure 5 yes Figure 2 A magnified view of part A; Figure 6 This is a schematic diagram of the cleaning mechanism of the present invention; Figure 7 yes Figure 2 A magnified view of a portion of B.

[0030] In the diagram: 1. Feeding mechanism; 11. Conveyor belt; 12. Limiting plate; 13. Industrial camera; 2. Transfer mechanism; 21. Linear module; 22. Electric gripper; 3. Switching mechanism; 31. Gear motor; 32. Switching disc; 4. Cleaning mechanism; 41. Protective cover; 42. Cleaning nozzle; 43. Lifting module; 44. Switching valve; 5. Detection mechanism; 51. Detection camera; 52. Adjusting seat; 521. Protrusion; 53. Automatic marking unit; 531. Piezoelectric nozzle; 532. Storage box; 54. Fixed seat; 541. Sliding... 55. Slot; 551. Angle adjustment unit; 552. Housing; 553. Adjustment motor; 554. Lead screw; 5555. Moving rod; 56. Fill light unit; 561. Electric telescopic rod; 562. Ring light source; 563. Coaxial light source; 57. Position adjustment unit; 571. Cross module; 572. Electric cylinder; 6. Frame; 7. Fixing mechanism; 71. Rotating motor; 72. Support base; 73. Rotating shaft; 74. Tilting motor; 75. Worktable; 751. Observation hole; 76. Three-jaw chuck; 761. Through hole; 77. Fixing block. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example: Figures 1-3 As shown, the present invention provides a technical solution: a flange testing device based on mixed testing of multiple models. The testing device includes a feeding mechanism 1 and a switching mechanism 3. A transfer mechanism 2 is provided on one side of the feeding mechanism 1, and a cleaning mechanism 4 and a testing mechanism 5 are provided on one side of the switching mechanism 3. The detection mechanism 5 includes a detection camera 51, a fixed base 54 and an angle adjustment unit 55. An adjustment base 52 is provided on one side of the detection camera 51, an automatic marking unit 53 is provided on one side of the adjustment base 52, a supplementary light unit 56 is provided on the adjustment base 52, and the angle adjustment unit 55 is hinged to the adjustment base 52 and the fixed base 54 respectively. A position adjustment unit 57 is provided on one side of the fixed base 54. The adjusting seat 52 is provided with a protrusion 521, which is spherical; The fixed base 54 is provided with a sliding groove 541; The protrusion 521 and the sliding groove 541 are slidably connected.

[0033] Workers place the flanges to be inspected into the loading mechanism 1, arranging them individually for transport. A camera in the loading mechanism 1 performs visual inspection, converting light signals into electrical signals via the camera's image sensor to generate an image, which is then sent to the control system. The system detects flange features in the image or uses OCR to identify text information on the flange. The image is compared with a pre-stored database of flange models to determine the flange type. A transfer mechanism 2, located to one side of the loading mechanism 1, transfers the flange to the inspection station. A switching mechanism 3 moves the cleaning mechanism 4 above the inspection station, activating it to clean the flange and prevent contamination from affecting the inspection results. After cleaning, the switching mechanism 3 removes the cleaning mechanism 4, and simultaneously moves the inspection mechanism 5 above the inspection station to inspect the flange, minimizing the impact of different flange types on the inspection results. The time for station transfer is reduced, thereby improving inspection efficiency. Simultaneously, based on the flange model, the control system drives the position adjustment unit 57 to adjust the position of the fixed seat 54, thereby adjusting the height and horizontal position of the inspection camera 51. The spherical protrusion 521 of the adjustment seat 52 and the sliding groove 541 of the fixed seat 54 are slidably connected. Multiple angle adjustment units 55 are hinged to the adjustment seat 52 and the fixed seat 54 respectively. The control system adjusts the extension and retraction of the angle adjustment units 55, causing the protrusion 521 to slide along the sliding groove 541, thereby adjusting the angle between the inspection camera 51 and the flange. The flange is illuminated by the supplementary lighting unit 56. After all components are adjusted, visual inspection is performed by the inspection camera 51. Simultaneously, the inspection station rotates the flange, completing the circumferential inspection of the flange. After detecting defects, the defect location is marked by the automatic marking unit 53, facilitating subsequent flange rework or sorting.

[0034] like Figure 4 As shown, the angle adjustment unit 55 includes a housing 551 and a moving rod 554. An adjustment motor 552 is provided on the housing 551. The housing 551 and the fixed seat 54 are hinged together. A lead screw 553 is provided on the output end of the adjustment motor 552. The lead screw 553 and the moving rod 554 are connected by a transmission. The moving rod 554 and the adjustment seat 52 are hinged together. The moving rod 554 and the housing 551 are slidably connected.

[0035] An adjusting motor 552 is installed inside the sleeve-shaped housing 551. When the adjusting motor 552 is started, the lead screw 553 on the output end of the adjusting motor 552 is driven to rotate. The lead screw 553 and the moving rod 554 are connected by a nut. The moving rod 554 is slidably connected to the housing 551. The cross-sections of the housing 551 and the moving rod 554 are not circular, so that the moving rod 554 can only move along the axial direction of the lead screw 553. The housing 551 is hinged to the fixed seat 54, and the moving rod 554 is hinged to the adjusting seat 52. Thus, the angle of the detection camera 51 is adjusted according to the extension and retraction of the moving rod 554.

[0036] like Figure 3 As shown, the supplementary lighting unit 56 includes an electric telescopic rod 561 and a ring light source 562. The electric telescopic rod 561 is hinged to the ring light source 562 and the adjustment seat 52 respectively. A coaxial light source 563 is provided on one side of the adjustment seat 52. The coaxial light source 563 is coaxial with the detection camera 51.

[0037] A coaxial light source 563, fixed on the adjustment seat 52 and coaxial with the axis of the detection camera 51, illuminates the flange when inspecting its inner hole or mounting hole. An annular light source 562, located outside the coaxial light source 563, illuminates the flange when inspecting its end face. When inspecting flanges of different specifications, three electrically operated telescopic rods 561 are distributed around the circumference of the annular light source 562. The two ends of the electric telescopic rods 561 are connected to the annular light source 562 and the adjustment seat 52 respectively through spherical hinges, and the hinge points are not at the same location. When the electric telescopic rods 561 extend and retract, the annular light source 562 rotates along the hinges, thereby adjusting the angle. This allows the incident angle of the annular light source 562 to be adjusted according to the different reflections caused by the different flange materials and processing precision, thus preventing overexposure from affecting the inspected structure.

[0038] like Figure 3 As shown, the position adjustment unit 57 includes a cross module 571, an electric cylinder 572 is provided on one side of the cross module 571, and a fixed seat 54 is located at the moving end of the cross module 571.

[0039] By setting up an electric cylinder 572, which is connected to a fixed base 54 via a cross module 571, the height of the fixed base 54 can be adjusted, thereby adjusting the height of the detection camera 51. By setting up the cross module 571, the horizontal position of the fixed base 54 can be adjusted, thereby adjusting the position of the detection camera 51, so that it can be moved to different holes on the flange for easy detection.

[0040] like Figure 3 As shown, the automatic marking unit 53 includes a piezoelectric nozzle 531, and a storage box 532 is provided on one side of the piezoelectric nozzle 531.

[0041] When a defect is detected in the flange, the piezoelectric nozzle 531 is moved above the defect by the position adjustment unit 57, and the control system controls the piezoelectric nozzle 531 to spray the marking liquid in the storage tank 532 onto the defect to complete the marking.

[0042] like Figure 5 and Figure 6 As shown, the testing equipment also includes a frame 6, on which a fixing mechanism 7 is provided; The fixing mechanism 7 includes a rotary motor 71 and a worktable 75. A support base 72 is provided on one side of the rotary motor 71. A rotating shaft 73 is provided on the support base 72. A flip motor 74 is provided on one side of the support base 72. The output end of the flip motor 74 is connected to the rotating shaft 73. The rotating shaft 73 is connected to the worktable 75. A three-jaw chuck 76 is provided on the worktable 75. A fixing block 77 is provided on the three-jaw chuck 76. The workbench 75 is provided with an observation hole 751; The three-jaw chuck 76 has a through hole 761.

[0043] A three-jaw chuck 76 is installed on the worktable 75 of the support base 72 to clamp the flange. The worktable 75 is rotatably connected to the support base 72 via a rotating shaft 73. A flip motor 74 is fixed to one side of the support base 72. The output end of the flip motor 74 is connected to the rotating shaft 73 via a keyway, which drives the worktable 75 to flip so that the lower or upper end face of the flange faces the inspection camera 51. An observation hole 751 and a through hole 761 are respectively provided on the worktable 75 and the three-jaw chuck 76, so that the lower end face of the flange can be detected through the observation hole 751 and the through hole 761 when inspecting the lower end face of the flange. The rotating motor 71 drives the support base 72 to rotate, thereby driving the flange to rotate along its axis, thus completing the circumferential defect detection.

[0044] like Figure 2 and Figure 6 As shown, the cleaning mechanism 4 includes a protective cover 41, a cleaning nozzle 42 is provided inside the protective cover 41, a lifting module 43 is provided on one side of the protective cover 41, and a switching valve 44 is provided on the protective cover 41. The switching valve 44 and the cleaning nozzle 42 are connected by pipes.

[0045] By setting up the lifting module 43, it can drive the protective cover 41 to move downward, thereby covering the entire workbench 75 and preventing the cleaning fluid from splashing out. The cleaning nozzle 42 is connected to the air source device or the water tank of the cleaning fluid through the switching valve 44. The cleaning fluid is sprayed out from the cleaning nozzle 42 by the delivery pump in the cleaning fluid tank, thereby cleaning the flange. After cleaning, the pipeline of the air source device is switched through the switching valve 44, so that the airflow is sprayed out from the cleaning nozzle 42 to dry the flange. By starting the rotating motor 71, the flange is driven to rotate at high speed to shake off the cleaning fluid on the flange.

[0046] like Figure 6 As shown, the switching mechanism 3 includes a geared motor 31, and a switching disk 32 is provided on the output end of the geared motor 31. The switching disk 32 is rotatably connected to the frame 6.

[0047] The cleaning mechanism 4 and the detection mechanism 5 are mounted on the switching plate 32. The output end of the geared motor 31, which is fixed on the frame 6, is connected to the switching plate 32 via a keyway. The switching plate 32 is mounted on the frame 6 via bearings, so that the geared motor 31 can drive the switching plate 32 to rotate, thereby moving the cleaning mechanism 4 and the detection mechanism 5.

[0048] like Figure 7 As shown, the feeding mechanism 1 includes a conveyor belt 11, a limit plate 12 is provided on the conveyor belt 11, and an industrial camera 13 is provided on one side of the conveyor belt 11. The transfer mechanism 2 includes a linear module 21, and an electric gripper 22 is provided on the moving end of the linear module 21.

[0049] The operator places the flange on the conveyor belt 11. By setting a limit plate 12 on the conveyor belt 11, the flange can only be transported one by one along the conveyor belt 11. By setting an industrial camera 13 above the conveyor belt 11 on a fixed frame, the model of the flange is detected by visual inspection. By setting two linear modules 21 that intersect in a cross shape, and installing electric grippers 22 on the moving end of the linear modules 21, the operator can drive the electric grippers 22 to move, thereby grabbing the flange on the conveyor belt 11 and moving it through the linear modules 21, and then transferring the flange to the inspection station.

[0050] like Figures 1-7 As shown, the detection method includes the following steps: S1: Place the flange to be inspected onto the conveyor belt 11, arrange them individually for transport, and inspect the model of the flange through the vision of the industrial camera 13. Then, the electric gripper 22 grabs the flange and moves it to the three-jaw chuck 76 on the worktable 75 through the linear module 21. The three-jaw chuck 76 clamps the flange and automatically centers it. Then, the electric gripper 22 releases the flange and moves it away. S2: The lifting module 43 drives the protective cover 41 to cover the entire workbench 75. Then, the cleaning fluid is sprayed from the cleaning nozzle 42 by the delivery pump in the external cleaning fluid tank to clean the flange. After cleaning, the pipeline of the air source device is switched to dry the flange by airflow. At the same time, the motor 71 drives the flange to rotate at high speed to spin dry the cleaning fluid. S3: The switching disk 32 is driven to rotate by the geared motor 31, so that the inspection camera 51 is moved to the top of the flange at the inspection station. The position of the inspection camera 51 is adjusted by the cross module 571, and the moving rod 554 is driven by the adjusting motor 552 to adjust the angle of the inspection camera 51 so that it is aligned with the inspection area. At the same time, the angle of the ring light source 562 is adjusted by the electric telescopic rod 561. Then, the flange is driven to rotate by the rotating motor 71, and the inspection camera 51 performs circumferential defect inspection on the upper end face of the rotating flange. Then, the position of the inspection camera 51 is adjusted again by the cross module 571 to inspect the holes of the flange, and the defect location is marked by the marker. S4: The flange is flipped by the flipping motor 74 so that the lower end face of the flange faces the detection camera 51. Then the position of the detection camera 51 is adjusted by the cross module 571 and the angle of the ring light source 562 is adjusted to drive the flange to rotate. The detection camera 51 performs circumferential defect detection on the lower end face of the rotating flange and marks the defect position by the marker. S5: After the inspection is completed, the inspected flange is picked up by the electric gripper 22, and the electric gripper 22 is moved to the unloading position by the linear module 21 to unload the flange.

[0051] Working principle of the invention: The operator places the flange to be inspected onto the conveyor belt 11. The flange model is detected by the industrial camera 13. The flange is moved and secured to the three-jaw chuck 76 by the electric gripper 22. The lifting module 43 drives the protective cover 41 to cover the worktable 75. Cleaning fluid is sprayed from the cleaning nozzle 42 by a pump in the external cleaning fluid tank to clean the flange. After cleaning, the system switches to the air supply line via the switching valve 44, using airflow to dry the flange. Simultaneously, the rotating motor 71 drives the flange to rotate at high speed to remove the cleaning fluid. After cleaning, the switching plate 32 is rotated by the reduction motor 31, moving the inspection camera 51 above the flange at the inspection station. The position of the inspection camera 51 is adjusted by the cross module 571, and the moving rod 554 is driven by the adjusting motor 552 to adjust the angle of the inspection camera 51 so that it aligns with the inspection area. The electric telescopic rod 561 drives the ring light source 562 to adjust its angle, and then the rotating motor 71 drives the flange to rotate. The inspection camera 51 performs circumferential defect detection on the upper end face of the rotating flange. Then, the cross module 571 readjusts the position of the inspection camera 51 to detect the holes in the flange and marks the defect positions with a marker. The flip motor 74 drives the flange to flip so that the lower end face of the flange faces the inspection camera 51. Then, the cross module 571 adjusts the position of the inspection camera 51 and adjusts the angle of the ring light source 562 to drive the flange to rotate. The inspection camera 51 performs circumferential defect detection on the lower end face of the rotating flange and marks the defect positions with a marker. After the detection is completed, the electric gripper 22 picks up the inspected flange and the linear module 21 moves the electric gripper 22 to the unloading position to unload the flange.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A flange testing device based on mixed testing of multiple models, characterized in that: The testing equipment includes a feeding mechanism (1) and a switching mechanism (3). The feeding mechanism (1) is provided with a transfer mechanism (2) on one side, and the switching mechanism (3) is provided with a cleaning mechanism (4) and a testing mechanism (5) on one side. The detection mechanism (5) includes a detection camera (51), a fixed base (54) and an angle adjustment unit (55). The detection camera (51) is provided with an adjustment base (52) on one side, and an automatic marking unit (53) is provided on one side of the adjustment base (52). The adjustment base (52) is provided with a supplementary light unit (56). The angle adjustment unit (55) is hinged to the adjustment base (52) and the fixed base (54) respectively. The fixed base (54) is provided with a position adjustment unit (57) on one side. The adjusting seat (52) is provided with a protrusion (521), which is spherical; The fixed base (54) is provided with a sliding groove (541); The protrusion (521) and the sliding groove (541) are slidably connected.

2. The flange testing equipment based on multi-model mixed testing according to claim 1, characterized in that: The angle adjustment unit (55) includes a housing (551) and a moving rod (554). An adjustment motor (552) is provided on the housing (551). The housing (551) and the fixed seat (54) are hinged together. A lead screw (553) is provided on the output end of the adjustment motor (552). The lead screw (553) and the moving rod (554) are connected by a transmission. The moving rod (554) and the adjustment seat (52) are hinged together. The moving rod (554) and the housing (551) are slidably connected.

3. The flange testing equipment based on multi-model mixed testing according to claim 2, characterized in that: The supplementary lighting unit (56) includes an electric telescopic rod (561) and a ring light source (562). The electric telescopic rod (561) is hinged to the ring light source (562) and the adjustment seat (52) respectively. A coaxial light source (563) is provided on one side of the adjustment seat (52). The coaxial light source (563) is coaxial with the detection camera (51).

4. The flange testing equipment based on mixed testing of multiple models according to claim 3, characterized in that: The position adjustment unit (57) includes a cross module (571), an electric cylinder (572) is provided on one side of the cross module (571), and the fixed seat (54) is located at the moving end of the cross module (571).

5. The flange testing equipment based on mixed testing of multiple models according to claim 1, characterized in that: The automatic marking unit (53) includes a piezoelectric nozzle (531), and a storage box (532) is provided on one side of the piezoelectric nozzle (531).

6. The flange testing equipment based on mixed testing of multiple models according to claim 1, characterized in that: The testing equipment also includes a frame (6), on which a fixing mechanism (7) is provided; The fixing mechanism (7) includes a rotating motor (71) and a worktable (75). A support base (72) is provided on one side of the rotating motor (71). A rotating shaft (73) is provided on the support base (72). A flip motor (74) is provided on one side of the support base (72). The output end of the flip motor (74) is connected to the rotating shaft (73). The rotating shaft (73) is connected to the worktable (75). A three-jaw chuck (76) is provided on the worktable (75). A fixing block (77) is provided on the three-jaw chuck (76). The workbench (75) is provided with an observation hole (751); The three-jaw chuck (76) is provided with a through hole (761).

7. The flange testing equipment based on mixed testing of multiple models according to claim 1, characterized in that: The cleaning mechanism (4) includes a protective cover (41), a cleaning nozzle (42) is provided inside the protective cover (41), a lifting module (43) is provided on one side of the protective cover (41), and a switching valve (44) is provided on the protective cover (41). The switching valve (44) and the cleaning nozzle (42) are connected by pipes.

8. A flange testing device based on mixed testing of multiple models according to claim 7, characterized in that: The switching mechanism (3) includes a geared motor (31), and a switching disk (32) is provided on the output end of the geared motor (31). The switching disk (32) and the frame (6) are rotatably connected.

9. A flange testing device based on mixed testing of multiple models according to claim 1, characterized in that: The feeding mechanism (1) includes a conveyor belt (11), a limiting plate (12) is provided on the conveyor belt (11), and an industrial camera (13) is provided on one side of the conveyor belt (11). The transfer mechanism (2) includes a linear module (21), and the moving end of the linear module (21) is provided with an electric gripper (22).

10. A flange inspection method based on mixed inspection of multiple models, characterized in that: The flange testing equipment based on multi-model mixed testing as described in any one of claims 1-9 includes the following steps: S1: Place the flange to be inspected into the feeding mechanism (1), and transfer the flange to the fixing mechanism (7) through the transfer mechanism (2). S2: Start the cleaning mechanism (4) to clean the flange; S3: Move the detection mechanism (5) above the flange by switching mechanism (3) and use detection camera (51) to detect the upper surface of the flange; S4: The flange is flipped over by the fixing mechanism (7) to inspect the lower end face and hole of the flange; S5: After the inspection is completed, the material is unloaded through the transfer mechanism (2).

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