Intelligent quality detection device for welding

Abstract

The utility model provides an intelligent quality detection device for welding, which relates to the field of intelligent quality detection equipment for welding and comprises a detection platform, a base for lifting the detection platform, a protective cover fixed at the top of the base, a fixing mechanism and a three-jaw chuck for fixing a workpiece, the detection unit comprises a PLC (Programmable Logic Controller) fixed on the surface of the base and a display screen fixed on one side of the protective cover; the visual detection assembly and the three-dimensional detection assembly are combined, a CCD camera in the visual detection assembly can shoot images to obtain plane visual information of a welding part, a line laser scanner in the three-dimensional detection assembly can obtain three-dimensional contour information of the welding part, and the visual detection assembly and the three-dimensional detection assembly work cooperatively to achieve the effect of detecting the welding part. The defects of a single detection mode are overcome, the problems that a stereo camera is low in resolution and insufficient in precision are effectively solved, and therefore the welding quality detection precision is improved.

Description

Technical Field

[0001] This utility model belongs to the field of intelligent quality inspection equipment for welding, specifically an intelligent quality inspection device for welding. Background Technology

[0002] Welding quality inspection equipment is used to detect welding quality problems, evaluate the quality and integrity of welding, and thus ensure the quality and safety of products. The inspection equipment can detect various defects and problems in welding, such as cracks, lack of fusion, incomplete penetration, slag inclusions, porosity, etc., to ensure that the welding meets relevant standards and requirements.

[0003] According to Chinese Patent Application No. 202321950985.5, a welding quality inspection device is disclosed, including a camera group comprising a planar camera and a stereo camera installed side by side. The planar camera is used to acquire two-dimensional images of the weld joint of the workpiece under test, and the stereo camera is used to acquire three-dimensional images of the weld joint. The stereo camera can rotate relative to the horizontal plane. The camera group is driven to move longitudinally and / or laterally. By combining the planar camera and the stereo camera to comprehensively inspect the welding quality, the inspection results are more accurate. Furthermore, the stereo camera can be rotated to adjust its angle, resulting in more accurate acquisition of image information of the weld joint. The switching process between the stereo camera and the planar camera is simple, and the device operates with high efficiency.

[0004] Existing technologies effectively solve the problems of fixed shooting angle adjustment and incomplete image acquisition in visual inspection of welding quality. They have the advantages of convenient shooting angle adjustment and improved image acquisition completeness. However, although welding quality can be detected by using planar cameras and stereo cameras, the resolution of stereo cameras is low, especially when capturing small geometric defects, such as weld height and depressions. Their accuracy is insufficient, thus reducing the accuracy of welding quality inspection.

[0005] In summary, this utility model provides an intelligent quality inspection device for welding to solve the above problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A welding quality intelligent inspection device includes an inspection platform, a base for raising the inspection platform, and a protective cover fixed to the top of the base; a fixing mechanism including a three-jaw chuck for fixing the workpiece and a rotating component for rotating the three-jaw chuck; an inspection unit including a PLC controller fixed to the surface of the base, a display screen fixed to one side of the protective cover, a support component installed on the upper end of the inner cavity of the protective cover, a vision inspection component and a three-dimensional inspection component for welding quality inspection, an audible and visual alarm for abnormal alarm, and a photoelectric sensor for positioning the support component. The vision inspection component includes a CCD camera for capturing images, a fixing plate fixed to the top of the CCD camera by bolts, an LED fill light fixed to the bottom of the fixing plate, a connecting seat fixed to the top of the fixing plate, and a first servo cylinder for moving the connecting seat. Several CCD cameras are provided, all fixed to the bottom of the fixing plate by brackets. The three-dimensional inspection component includes a line laser scanner for acquiring three-dimensional contours, a support seat fixed to the top of the line laser scanner by bolts, and a second servo cylinder for moving the support seat.

[0008] Furthermore, in this utility model, a transverse moving assembly is also installed at the upper end of the inner cavity of the protective cover, including a fixed frame, a second servo motor for moving the support assembly, a reducer, a ball screw and a ball nut, as well as a movable plate and a connecting plate for supporting the support assembly.

[0009] Furthermore, in this utility model, the support component includes a horizontal plate, a slide rail fixed to the bottom of the horizontal plate, and a slide block slidably connected to the surface of the slide rail. The slide rail is provided in two sets and is fixed to both sides of the bottom of the horizontal plate respectively. Each set of slide rails is slidably connected to a slide block at both ends.

[0010] Furthermore, in this utility model, the connecting seat and the support seat are fixedly connected to the slide rails at both ends, the first servo cylinder and the second servo cylinder are fixedly fixed to both ends of the bottom of the horizontal plate, the output end of the first servo cylinder is fixedly connected to the connecting seat, and the output end of the second servo cylinder is fixedly connected to the support seat.

[0011] Furthermore, in this utility model, the rotating assembly includes a protective shell for providing protection, a first servo motor and a gearbox fixed in the inner cavity of the protective shell, a drive wheel connected to the output shaft of the first servo motor, and a driven wheel connected to the input shaft of the gearbox. The drive wheel and the driven wheel are connected by a belt drive. The output shaft of the gearbox extends to the outside of the protective shell and is connected to a three-jaw chuck.

[0012] Furthermore, in this utility model, the ball screw is movably connected to the inner wall of the fixed frame via a bearing, the fixed frame is fixedly connected to the protective cover, the second servo motor and the reducer are both fixed to one end of the fixed frame, the top and bottom of the fixed frame are provided with sliding grooves, the ball nut is sleeved on the surface of the ball screw and threadedly connected to the surface of the ball screw, one end of the ball nut is fixedly connected to the movable plate, both ends of the movable plate pass through the sliding groove and extend to the outside of the fixed frame, and are fixedly connected to the connecting plate, the connecting plate is fixedly connected to the cross plate.

[0013] Furthermore, in this utility model, the photoelectric sensor is fixed to the top of the fixing frame, and the number of photoelectric sensors is set to several. A sensing plate is fixedly connected to the top of the movable plate, and one end of the sensing plate is in contact with the photoelectric sensor.

[0014] Furthermore, in this utility model, the output terminals of the CCD camera, line laser scanner, and photoelectric sensor are all connected to the input terminal of the PLC controller, and the output terminal of the PLC controller is respectively connected to the input terminals of the first servo motor, the display screen, the LED fill light, the second servo cylinder, the first servo cylinder, and the audible and visual alarm.

[0015] Beneficial effects: This utility model has the following beneficial effects:

[0016] This invention combines a visual inspection component and a three-dimensional inspection component. The CCD camera in the visual inspection component captures images and obtains planar visual information of the welded area, providing basic image data for inspection. The line laser scanner in the three-dimensional inspection component acquires three-dimensional contour information of the welded area. The two work together to overcome the shortcomings of a single inspection method. The line laser scanner has high precision in capturing minute geometric defects and can effectively solve the problems of low resolution and insufficient precision of stereo cameras, thereby improving the inspection accuracy of welding quality.

[0017] This invention, through the cooperation of the support component, the transverse component, and the first and second servo cylinders, enables the vision inspection component and the three-dimensional inspection component to inspect the welding parts from multiple angles and positions. The rotating component can drive the three-jaw chuck to rotate, allowing the workpiece to be inspected from all directions. This allows information about the welding parts to be obtained from different perspectives, increasing the comprehensiveness and accuracy of the inspection and further compensating for the accuracy problems that may be caused by a single inspection angle. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a cross-sectional structural schematic diagram of the protective cover of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the transverse moving component and the support component in the separated state of this utility model;

[0021] Figure 4 This is a schematic diagram showing the connection structure between the support component, the vision inspection component, and the three-dimensional inspection component of this utility model;

[0022] Figure 5 This is a schematic diagram of the connection state structure of the transverse moving component of this utility model;

[0023] Figure 6 This is a schematic diagram of the system flow of the detection unit of this utility model.

[0024] In the picture:

[0025] 100. Inspection table; 110. Base; 120. Protective cover; 200. Fixing mechanism; 210. Three-jaw chuck; 220. Rotating assembly; 221. Protective shell; 222. First servo motor; 223. Gearbox; 224. Drive wheel; 225. Driven wheel; 300. Inspection unit; 310. PLC controller; 320. Display screen; 330. Support assembly; 331. Horizontal plate; 332. Slide rail; 333. Slide block; 340. Vision inspection assembly; 341. CCD camera; 342. Fixing 343. Plate; 344. LED supplementary light; 345. Connecting seat; 346. First servo cylinder; 357. 3D detection component; 358. Line laser scanner; 359. Support seat; 350. Second servo cylinder; 360. Audible and visual alarm; 370. Photoelectric sensor; 400. Lateral movement component; 410. Fixing frame; 420. Second servo motor; 430. Reducer; 440. Ball screw; 450. Ball nut; 460. Movable plate; 470. Connecting plate; 480. Slide groove; 490. Sensor plate. Detailed Implementation

[0026] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.

[0027] Example 1

[0028] like Figure 1-6 As shown, this is the first embodiment of the present invention. This embodiment provides a welding quality intelligent inspection device, including an inspection platform 100, a base 110 for raising the inspection platform, and a protective cover 120 fixed to the top of the base 110; a fixing mechanism 200, including a three-jaw chuck 210 for providing workpiece fixing, and a rotating component 220 for driving the three-jaw chuck 210 to rotate; and an inspection unit 300, including a PLC controller 310 fixed to the surface of the base 110, a display screen 320 fixed to one side of the protective cover 120, a support component 330 installed at the upper end of the inner cavity of the protective cover 120, a visual inspection component 340 and a three-dimensional inspection component 350 for welding quality inspection, an audible and visual alarm 360 for abnormal alarm, and a device for... The photoelectric sensor 370 is positioned on the support assembly 330. The vision inspection assembly 340 includes a CCD camera 341 for taking pictures, a fixing plate 342 fixed to the top of the CCD camera 341 by bolts, an LED fill light 343 fixed to the bottom of the fixing plate 342, a connecting seat 344 fixed to the top of the fixing plate 342, and a first servo cylinder 345 for moving the connecting seat 344. The number of CCD cameras 341 is set to several, all of which are fixed to the bottom of the fixing plate 342 by brackets. The three-dimensional inspection assembly 350 includes a line laser scanner 351 for acquiring three-dimensional contours, a support seat 352 fixed to the top of the line laser scanner 351 by bolts, and a second servo cylinder 353 for moving the support seat 352.

[0029] like Figure 1-6As shown, the visual inspection component 340 and the three-dimensional inspection component 350 are combined. The CCD camera 341 in the visual inspection component 340 captures images, obtaining planar visual information of the welded area, providing basic image data for inspection. The line laser scanner 351 in the three-dimensional inspection component 350 acquires the three-dimensional contour information of the welded area. The two work together to compensate for the shortcomings of a single inspection method. The line laser scanner 351 has high accuracy in capturing minute geometric defects, such as weld height and depressions, effectively solving the problems of low resolution and insufficient accuracy of stereo cameras, thereby improving the accuracy of weld quality inspection. Utilizing the cooperation of the support component 330, the transverse component 400, and the first servo cylinder 345 and the second servo cylinder 353, the visual inspection component 340 and the three-dimensional inspection component 350 can inspect the welded area from multiple angles and positions. The rotating component 220 can drive the three-jaw chuck 210 to rotate, allowing the workpiece to be inspected from all directions. This allows for the acquisition of information about the welding area from different perspectives, increasing the comprehensiveness and accuracy of the inspection. It further compensates for the accuracy problems that may result from a single inspection angle. The CCD camera 341, line laser scanner 351, and photoelectric sensor 370 transmit the inspection data to the PLC controller 310. The PLC controller 310 processes and analyzes the data and feeds the results back to the display screen 320. At the same time, the PLC controller 310 can also control the operation of the first servo motor 222, LED supplementary light 343, second servo cylinder 353, first servo cylinder 345, and audible and visual alarm 360 based on the inspection results. Through data processing and feedback mechanisms, welding quality problems can be detected in a timely manner, and accurate judgments and alarms can be made, improving the reliability and accuracy of the inspection. The workpiece is fixed and rotated by the fixing mechanism 200, and the inspection unit 300 performs visual and three-dimensional inspection of the welding area. The PLC controller 310 processes and controls the inspection data, ultimately completing the intelligent inspection of welding quality.

[0030] Example 2

[0031] Reference Figure 1-4 6, is the second embodiment of this utility model, which is based on the previous embodiment.

[0032] In this embodiment, the support component 330 includes a horizontal plate 331, a slide rail 332 fixed to the bottom of the horizontal plate 331, and a slide block 333 slidably connected to the surface of the slide rail 332. There are two sets of slide rails 332, which are respectively fixed to both sides of the bottom of the horizontal plate 331. Each set of slide rails 332 is slidably connected to both ends of the slide block 333.

[0033] The connecting seat 344 and the support seat 352 are fixedly connected to the slide rails 332 at both ends, respectively. The first servo cylinder 345 and the second servo cylinder 353 are fixedly fixed to the bottom ends of the horizontal plate 331, respectively. The output end of the first servo cylinder 345 is fixedly connected to the connecting seat 344, and the output end of the second servo cylinder 353 is fixedly connected to the support seat 352.

[0034] The rotating assembly 220 includes a protective shell 221 for providing protection, a first servo motor 222 and a gearbox 223 fixed inside the protective shell 221, a drive wheel 224 driven by the output shaft of the first servo motor 222, and a driven wheel 225 driven by the input shaft of the gearbox 223. The drive wheel 224 and the driven wheel 225 are connected by a belt drive. The output shaft of the gearbox 223 extends to the outside of the protective shell 221 and is driven by a three-jaw chuck 210.

[0035] The outputs of the CCD camera 341, the line laser scanner 351, and the photoelectric sensor 370 are all connected to the inputs of the PLC controller 310. The outputs of the PLC controller 310 are connected to the inputs of the first servo motor 222, the display screen 320, the LED fill light 343, the second servo cylinder 353, the first servo cylinder 345, and the audible and visual alarm 360, respectively.

[0036] like Figure 1-4 As shown in Figure 6, the CCD camera 341 is fixed to the bottom of the mounting plate 342 by a bracket, and the LED fill light 343 provides uniform illumination. The first servo cylinder 345 drives the connecting seat 344 to move the entire vision module laterally along the slide rail 332, capturing images of the weld surface in real time and detecting two-dimensional defects such as cracks and porosity. The line laser scanner 351 drives the support seat 352 to move by the second servo cylinder 353. The laser line is projected onto the weld surface to form a contour line, scanning and capturing deformation data to reconstruct the three-dimensional morphology of the weld and detect three-dimensional defects such as incomplete fusion and undercut. The rotating component 220 of the fixing mechanism 200 can drive the three-jaw chuck 210 to rotate, allowing the workpiece to rotate during the inspection process. The detection unit 300 can inspect different parts of the workpiece without multiple position adjustments, saving inspection time and improving inspection efficiency. The slide rail 332 and slide block 333 of the support component 330, in cooperation with the first servo cylinder 345 and the second servo cylinder 353, enable the vision inspection component 340 and the three-dimensional inspection component 350 to move quickly and accurately to the inspection position, achieving rapid positioning and inspection, and improving inspection efficiency. The LED supplementary light 343 in the vision inspection component 340 can provide sufficient light during shooting, reducing image blurring or shadow problems caused by insufficient light, making the images captured by the CCD camera 341 clearer, and further improving the accuracy of vision inspection. ，The CCD camera 341, line laser scanner 351, and photoelectric sensor 370 transmit the detection data to the PLC controller 310. The PLC controller 310 processes and analyzes the data and feeds the results back to the display screen 320. At the same time, the PLC controller 310 can also control the operation of the first servo motor 222, LED supplementary light 343, second servo cylinder 353, first servo cylinder 345, and audible and visual alarm 360 based on the detection results. Through data processing and feedback mechanisms, welding quality problems can be detected in a timely manner, and accurate judgments and alarms can be made, thus improving the reliability and accuracy of detection.

[0037] Example 3

[0038] Reference Figure 1 , 2 3 and 5 are the third embodiment of this utility model, which is based on the first two embodiments.

[0039] In this embodiment, a transverse component 400 is also installed at the upper end of the inner cavity of the protective cover 120, including a fixed frame 410, a second servo motor 420 for moving the support component 330, a reducer 430, a ball screw 440 and a ball nut 450, as well as a movable plate 460 and a connecting plate 470 for supporting the support component 330.

[0040] The ball screw 440 is movably connected to the inner wall of the fixed frame 410 via a bearing. The fixed frame 410 is fixedly connected to the protective cover 120. The second servo motor 420 and the reducer 430 are both fixed to one end of the fixed frame 410. The top and bottom of the fixed frame 410 are provided with sliding grooves 480. The ball nut 450 is sleeved on the surface of the ball screw 440 and is threadedly connected to the surface of the ball screw 440. One end of the ball nut 450 is fixedly connected to the movable plate 460. Both ends of the movable plate 460 pass through the sliding grooves 480 and extend to the outside of the fixed frame 410, and are fixedly connected to the connecting plate 470. The connecting plate 470 is fixedly connected to the horizontal plate 331.

[0041] The photoelectric sensor 370 is fixed to the top of the mounting bracket 410, and there are several photoelectric sensors 370. The top of the movable plate 460 is fixedly connected to the sensing plate 490, and one end of the sensing plate 490 is in contact with the photoelectric sensor 370.

[0042] like Figure 1 , 2As shown in Figures 3 and 5, the second servo motor 420 drives the ball screw 440 to rotate via the reducer 430. The ball nut 450 drives the movable plate 460 to move along the slide groove 480 of the fixed frame 410. The movable plate 460 pushes the support assembly 330 to move laterally as a whole through the connecting plate 470, thereby realizing the movement of the detection module in the inner cavity of the protective cover 120, covering different areas of the workpiece. The photoelectric sensor 370 is fixed to the top of the fixed frame 410. The sensing plate 490 moves with the movable plate 460 to trigger the photoelectric sensor 370. The setting of the photoelectric sensor 370 and the sensing plate 490 can accurately control and position the support assembly 330. During the detection process, it ensures that the vision detection assembly 340 and the three-dimensional detection assembly 350 can accurately reach the designated position for detection, avoiding detection errors caused by position deviation, thereby improving the detection accuracy.

[0043] In use, the welding workpiece is first clamped by the three-jaw chuck 210 to ensure that the workpiece position is fixed during the inspection process. Then, the inspection unit 300 is positioned, the transverse component 400 starts to run, the second servo motor 420 starts, and the power is transmitted to the ball screw 440 after being reduced by the reducer 430, causing it to rotate. The rotation of the ball screw 440 will drive the ball nut 450 to move linearly. The ball nut 450 drives the movable plate 460 fixedly connected to it to move. The movable plate 460 drives the horizontal plate 331 of the support component 330 to move through the connecting plate 470, thereby realizing the transverse movement of the vision inspection component 340 and the three-dimensional inspection component 350. During the movement, the sensing plate 490 on the top of the movable plate 460 contacts the photoelectric sensor 370 on the top of the fixed frame 410. The photoelectric sensor 370 transmits the position signal to the PLC controller 310. The PLC controller 310 controls the operation of the second servo motor 420 according to the signal to achieve precise positioning.

[0044] Once the detection position is determined, the first servo cylinder 345 moves the connecting seat 344, which in turn moves the CCD camera 341 to the appropriate detection position. Simultaneously, the PLC controller 310 controls the LED supplementary light 343 to turn on, providing sufficient light for the CCD camera 341. The CCD camera 341 captures images of the welding area and transmits the captured image information to the PLC controller 310. After visual inspection is completed, the second servo cylinder 353 moves the support seat 352, causing the line laser scanner 351 to move to the appropriate detection position. The line laser scanner 351 scans the welding area, acquiring its three-dimensional contour information and transmitting the information to the PLC controller 310. After receiving the information from the CCD camera 341 and the line laser scanner 351, the PLC controller 310 analyzes and processes this data. If an abnormality in the welding quality is detected, the PLC controller 310 will control the audible and visual alarm 360 to issue an audible and visual alarm signal to alert the operator. Simultaneously, the PLC controller 310 will display the detection results on the display screen 320 for the operator's convenience.

[0045] During the inspection process, the rotating component 220 can achieve 360° all-round inspection of the workpiece. The first servo motor 222 is started, and its output shaft drives the drive wheel 224 to rotate. The drive wheel 224 drives the driven wheel 225 to rotate through the belt. The driven wheel 225 then drives the input shaft of the gearbox 223 to rotate. Finally, the output shaft of the gearbox 223 drives the three-jaw chuck 210 to rotate, so that the workpiece can be inspected from all directions.

[0046] The workpiece is fixed and rotated by the fixing mechanism 200, the detection unit 300 performs visual and three-dimensional detection on the welding part, the transverse component 400 realizes the movement and positioning of the detection unit 300, and the PLC controller 310 processes and controls the detection data to finally complete the intelligent detection of welding quality.

[0047] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

[0048] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A welding quality intelligent inspection device, characterized in that: include, The testing platform (100) includes a base (110) for raising the testing platform and a protective cover (120) fixed to the top of the base (110); The fixing mechanism (200) includes a three-jaw chuck (210) for providing workpiece fixing, and a rotating assembly (220) for driving the three-jaw chuck (210) to rotate; The detection unit (300) includes a PLC controller (310) fixed to the surface of the base (110), a display screen (320) fixed to one side of the protective cover (120), a support assembly (330) installed on the upper end of the inner cavity of the protective cover (120), a visual inspection assembly (340) and a three-dimensional inspection assembly (350) for welding quality inspection, an audible and visual alarm (360) for abnormal alarm, and a photoelectric sensor (370) for positioning the support assembly (330). The visual inspection component (340) includes a CCD camera (341) for taking pictures, a fixing plate (342) fixed to the top of the CCD camera (341) by bolts, an LED fill light (343) fixed to the bottom of the fixing plate (342), a connecting seat (344) fixed to the top of the fixing plate (342), and a first servo cylinder (345) for moving the connecting seat (344). The number of CCD cameras (341) is set to several, all of which are fixed to the bottom of the fixing plate (342) by brackets. The three-dimensional detection component (350) includes a line laser scanner (351) for acquiring three-dimensional contours, a support base (352) fixed to the top of the line laser scanner (351) by bolts, and a second servo cylinder (353) for moving the support base (352).

2. The intelligent quality inspection device for welding as described in claim 1, characterized in that: The upper end of the inner cavity of the protective cover (120) is also equipped with a transverse component (400), including a fixed frame (410), a second servo motor (420) for moving the support component (330), a reducer (430), a ball screw (440) and a ball nut (450), as well as a movable plate (460) and a connecting plate (470) for supporting the support component (330).

3. The intelligent quality inspection device for welding as described in claim 1, characterized in that: The support assembly (330) includes a horizontal plate (331), a slide rail (332) fixed to the bottom of the horizontal plate (331), and a slide block (333) slidably connected to the surface of the slide rail (332). There are two sets of slide rails (332), which are respectively fixed to both sides of the bottom of the horizontal plate (331). Each set of slide rails (332) has a slide block (333) slidably connected to both ends.

4. The intelligent quality inspection device for welding as described in claim 3, characterized in that: The connecting seat (344) and the support seat (352) are fixedly connected to the slide rails (332) at both ends, respectively. The first servo cylinder (345) and the second servo cylinder (353) are fixedly fixed to the bottom ends of the horizontal plate (331). The output end of the first servo cylinder (345) is fixedly connected to the connecting seat (344), and the output end of the second servo cylinder (353) is fixedly connected to the support seat (352).

5. The intelligent quality inspection device for welding as described in claim 1, characterized in that: The rotating assembly (220) includes a protective shell (221) for providing protection, a first servo motor (222) and a gearbox (223) fixed inside the protective shell (221), a drive wheel (224) driven by the output shaft of the first servo motor (222), and a driven wheel (225) driven by the input shaft of the gearbox (223). The drive wheel (224) and the driven wheel (225) are connected by a belt drive. The output shaft of the gearbox (223) extends to the outside of the protective shell (221) and is driven by a three-jaw chuck (210).

6. The intelligent quality inspection device for welding as described in claim 2, characterized in that: The ball screw (440) is movably connected to the inner wall of the fixed frame (410) via a bearing. The fixed frame (410) is fixedly connected to the protective cover (120). The second servo motor (420) and the reducer (430) are both fixed to one end of the fixed frame (410). The top and bottom of the fixed frame (410) are provided with sliding grooves (480). The ball nut (450) is sleeved on the surface of the ball screw (440) and threadedly connected to the surface of the ball screw (440). One end of the ball nut (450) is fixedly connected to the movable plate (460). Both ends of the movable plate (460) pass through the sliding groove (480) and extend to the outside of the fixed frame (410), and are fixedly connected to the connecting plate (470). The connecting plate (470) is fixedly connected to the cross plate (331).

7. The intelligent quality inspection device for welding as described in claim 2, characterized in that: The photoelectric sensor (370) is fixed to the top of the fixing frame (410), and there are several photoelectric sensors (370). The top of the movable plate (460) is fixedly connected to a sensing plate (490), and one end of the sensing plate (490) is in contact with the photoelectric sensor (370).

8. The intelligent quality inspection device for welding as described in claim 1, characterized in that: The output terminals of the CCD camera (341), the line laser scanner (351), and the photoelectric sensor (370) are all connected to the input terminals of the PLC controller (310). The output terminals of the PLC controller (310) are respectively connected to the input terminals of the first servo motor (222), the display screen (320), the LED fill light (343), the second servo cylinder (353), the first servo cylinder (345), and the audible and visual alarm (360).

Images