Aerostat capsule welding quality profiling detection system and detection method
By designing the airfloor capsule welding quality profiling detection system, the arc detection table and high-precision vision camera are used to realize the automatic detection of welds, which solves the problems of large errors and low efficiency of manual detection and improves the detection accuracy and efficiency.
Patent Information
- Application Number
- CN202411114284.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-06-24
AI Technical Summary
In the prior art, the quality inspection of the welded vane body depends on manual visual or manual inspection, resulting in problems such as inconvenient expansion of welds, large detection errors in open seams and misalignment dimensions, low measurement efficiency, and high detection operation strength.
A floating bladder weld quality profiling detection system is designed, including an arc detection table, a detection camera, a arc slide rail, a camera frame, an alarm and a digital display control unit. Through the vacuum adsorption of the arc detection table and the design of the arc slide rail, the bladder weld is fully laid out, and automated detection is achieved using a high-precision visual camera and a digital display control unit.
It improves the detection accuracy of the capsule weld, significantly improves the detection efficiency, reduces the intensity of the detection operation, can quickly scan and detect independently, display the detection data and generate curves online, and quickly locate weld defects.
Smart Images
Figure CN120194614A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of airship envelope welding detection, and in particular to a profiling detection system and method for the welding quality of an airship envelope. Background Art
[0002] An airship is a flexible aircraft that mainly relies on lifting gas to achieve takeoff and hovering flight. The welding of the envelope flaps of an airship is a process in which straight or curved envelope flaps made of special reinforced flexible composite fabrics or plastic films are thermally pressed and bonded into shape after being aligned pairwise by welding equipment. The area where the edges of two envelope flaps are heat-sealed and connected together is the weld seam. The weld seam accuracy, also known as the welding accuracy, is one of the important factors for evaluating welding quality, mainly including the weld seam width, the unsealed size, the misalignment size of the envelope flaps, etc.
[0003] Currently, in the processing of airship envelopes at home and abroad, the detection of the welding quality of the envelope generally relies on manual visual inspection or manual detection, lacking proprietary automated equipment for detecting the welding accuracy of the envelope. Especially for the weld seam detection operations of medium and large-sized airship envelopes with lengths of up to dozens of meters or even hundreds of meters, the deficiencies are mainly reflected in the following aspects: First, the errors of manual detection data such as the unsealed size and the misalignment size are relatively large, and the measurement accuracy cannot be guaranteed.
[0004] Second, the long spindle-shaped curved envelope flaps are prone to abnormal arc bulging after welding and unfolding. The arc bulging of the envelope weld seam causes local deformation, which is not convenient for the accuracy detection of the envelope flap weld seam. Especially for the tiny unsealed defects and misalignment defects exceeding the standard by 0.1 mm, the detection efficiency is low. Summary of the Invention
[0005] To overcome the deficiencies of the prior art, the invention purpose of the present invention is to provide a profiling detection system and method for the welding quality of an airship envelope, so as to solve the problems in the existing manual detection that the weld seam is not convenient to unfold, the detection errors of the unsealed size and the misalignment size are large, the measurement efficiency is low, and the detection operation intensity is high.
[0006] To achieve the above invention purpose, the profiling detection system for the welding quality of the airship envelope of the present invention includes an arc detection table, a detection camera, an arc slide rail, a camera frame, an alarm, and a digital display control unit; the arc slide rail is parallel to the arc detection table in the length direction, the detection camera is installed at the lower end of the camera frame to identify and detect the unsealed size and the misalignment size of the envelope weld seam, the alarm is fixed on the camera frame by a clamp, and the digital display control unit is connected to the detection camera, the alarm, a servo motor for controlling the operation of the camera frame, and a vacuum pump for controlling the opening and closing of the vacuum adsorption holes through cables or wires.
[0007] Furthermore, the arc-shaped inspection table bears and fixes the weld seam of the capsule body, and positions the weld seam of the capsule body along the length direction. The arc-shaped inspection table is a long strip circular arc, the span of the arc-shaped inspection table is 4 m to 50 m, the arc height of the arc-shaped inspection table measured from the ground horizontal line is 0.7 m to 1.6 m, the width of the arc-shaped inspection table is 100 mm to 600 mm, and the arc-shaped inspection table is made of tempered glass, quartz or acrylic transparent material.
[0008] Furthermore, a length scale is provided along the length direction of the arc-shaped surface of the arc-shaped inspection table, and the minimum scale of the length scale is not less than 1 cm.
[0009] Furthermore, vacuum adsorption holes are distributed on the arc-shaped inspection table, the diameter of the vacuum adsorption holes is 4 mm to 20 mm, and each vacuum adsorption hole is connected to a vacuum pump through an air pipe. The arc-shaped inspection table fixes the weld seam of the capsule body through vacuum adsorption.
[0010] Furthermore, the inspection camera uses an industrial camera, its pixel is not less than 1000W, the frequency is not less than 5fps, and the detection accuracy of the opening size and misalignment size of the weld seam of the capsule body by the inspection camera both reach within 0.2 mm.
[0011] Furthermore, the arc-shaped slide rail is placed on one side of the arc-shaped inspection table. The arc-shaped slide rail and the arc-shaped inspection table are concentric or non-concentric. The arc of the arc-shaped slide rail is the same as that of the arc-shaped inspection table. The span of the arc-shaped slide rail is 4 m to 50 m, and the arch height is 0.71 m to 2.4 m.
[0012] Furthermore, the camera mount fixes the inspection camera. The camera mount is a telescopic L-shaped beam mount that can move up and down, so that the vertical distance between the inspection camera and the tabletop of the arc-shaped inspection table is adjustable. The vertical beam of the L-shaped beam mount can move up and down along the guiding hole of the cross beam, and the maximum adjustable displacement up and down is 800 mm. After the height of the vertical beam is positioned on the cross beam, it is locked with a locking screw; a servo motor and a slider car for driving the movement of the camera mount are installed on the cross beam of the L-shaped beam mount. The camera mount is installed on the slider car. The output shaft of the servo motor is connected to the driving wheel. The four driving wheels of the slider car are in rolling connection with the arc-shaped slide rail. A pressure limiting rod is provided between the slider car and the arc-shaped slide rail. One end of the pressure limiting rod is fixed to the bottom of the slider car, and the ball at the other end of the pressure limiting rod is in contact with the arc-shaped slide rail. The servo motor drives the driving wheels of the slider car to realize the sliding of the camera mount along the arc track of the arc-shaped slide rail. The movement speed V of the servo motor and the slider car is adjustable within 0 to 15 m / min.
[0013] Furthermore, the alarm has a voice alarm function. When the seam opening size, misalignment size of the bladder weld exceeds the standard or is abnormal, it receives the voice alarm instruction from the digital display control unit, and the alarm respectively issues voice prompts: "Abnormal seam opening", "Abnormal misalignment", "Abnormal detection". When both "Abnormal seam opening" and "Abnormal misalignment" occur at the same position of the bladder weld, the alarm issues a voice prompt: "Abnormal detection". When the size of the bladder weld is normal during detection, the alarm does not issue an alarm prompt; the alarm selects a voice broadcaster with a recording storage function and RS232 serial port control.
[0014] Furthermore, the digital display control unit has two modes: an automatic scanning detection mode and a manual scanning detection operation for local detection, and simultaneously issues corresponding instructions to the servo motor and the detection camera to perform scanning and monitoring tasks; issues voice prompt instructions of "Abnormal seam opening", "Abnormal misalignment", "Abnormal weld", "Abnormal detection" to the alarm online; can generate a curve with the detection displacement length of the bladder weld as the abscissa and the seam opening size or misalignment size as the ordinate, and quickly find the position where the bladder weld has defects through this curve combined with the length scale on the arc-shaped detection table; the digital display control unit is provided with "Bladder fixation" and "Bladder release" buttons. Click the "Bladder fixation" button to control the start of the vacuum pump, and make the bladder weld fully fixed on the arc-shaped detection table through the vacuum adsorption holes. After the detection is completed, click the "Bladder release" button to release the bladder by stopping the operation of the vacuum pump, so as to perform the detection of the next section of the bladder; the digital display control unit selects the Senke brand SK-19GBQX industrial control upper computer.
[0015] The method for detecting the profile welding of the aerostat bladder of the present invention includes the following steps: (a) Move the first section of the bladder flap weld to the tabletop of the arc-shaped detection table and unfold it, and make the bladder flap weld just fall within the detection area. The arc length of the arc-shaped detection table is adapted to the arc length of the first section of the bladder flap weld to be inspected; (b) Press the "Bladder fixation" button on the digital display control unit to open the vacuum adsorption holes and adsorb and fix the bladder on the tabletop of the arc-shaped detection table; (c) Adjust the camera stand and adjust the vertical distance from the bottom lens of the detection camera to the bladder weld on the surface of the arc-shaped detection table; (d) Enter the code number of the bladder and the weld batch on the digital display control unit; (e) Input the detection speed V on the digital display control unit; (f)Select "Automatic Scanning" on the digital display control unit. After pressing the operation key, the inspection camera completes the scanning inspection of the opening size and misalignment size of the bladder weld seam within the set time. During the inspection process, the alarm gives an on-line voice prompt for the opening size > 1.5 mm and the misalignment size > 2.5 mm; synchronously with the inspection, the digital display control unit on-line generates a detection length displacement - opening size curve and a detection length displacement - misalignment size curve, and the weld defect occurrence location of the bladder weld seam can be traced in a timely manner according to the curve; (g)After this section of scanning is completed, the following data are automatically generated on the digital display control unit: the detection length of the first bladder flap weld seam, the cumulative opening defect length, the opening defect PPM, and the misalignment defect PPM; (h)Press the pause button on the digital display control unit, and the abscissa length displacement in the detection length displacement - opening size curve does not return to zero; (i)Repeat the above steps (a) - (h). After the inspection of the second and third bladder flap weld seams is completed, the precision inspection of the bladder weld seams in one batch is completed.
[0016] Compared with the prior art, the floating airship bladder welding quality profiling detection system with its profiling design of the arc-shaped inspection table can fully flatten and unfold the bladder weld seam. Through vacuum adsorption, the flexible bladder flap weld area can be fully fixed on the tabletop of the arc-shaped inspection table. Using a high-precision vision camera instead of manual or visual inspection operations improves the inspection accuracy of the bladder flap weld seam; through digital display control, a fast and autonomous scanning inspection function can be realized, on-line display of inspection data, on-line generation of displacement length - opening or misalignment size curves, significantly improving the inspection of the bladder weld seam accuracy and the positioning and tracing efficiency of bladder quality defects. This system and method contribute to the digital upgrade of the floating airship bladder and even the precision quality inspection of flexible materials and flexible equipment in other industries, and have broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only one embodiment of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0018] Figure 1 It is a schematic diagram of the weld shape of the floating airship bladder of the present invention.
[0019] Figure 2 It is a schematic diagram of the welding marking lines of the two bladder flaps of the bladder of the present invention.
[0020] Figure 3 It is a schematic diagram of the structure of the bladder weld seam of the present invention.
[0021] Figure 4 It is a schematic structural diagram of the present invention.
[0022] Figure 5 It is Figure 4 a schematic top - view structural diagram of
[0023] Figure 6 It is Figure 4 a schematic structural diagram of the arc - shaped detection table of
[0024] Figure 7 It is Figure 4 a schematic diagram of the positional relationship of the camera mount of
[0025] Figure 8 It is Figure 4 a schematic diagram of the structural relationship among the camera mount, the slider trolley, and the arc - shaped slide rail of
[0026] Figure 9 It is Figure 8 a schematic top - view internal structural diagram of
[0027] Figure 10 It is Figure 4 a schematic diagram of the detection of the expansion of the capsule body weld of
[0028] Figure 11 It is a schematic diagram of the control logic of the present invention.
[0029] In the figure: 1. Arc - shaped detection table; 2. Detection camera; 3. Arc - shaped slide rail; 4. Camera mount; 5. Alarm; 6. Digital display control unit; 7. Capsule body weld; 8. Servo motor; 9. Vacuum adsorption hole; 10. Driving wheel; 11. Capsule body; 12. First capsule flap; 13. Second capsule flap; 14. Slider trolley; 15. Pressure - limiting rod; 16. Stitching misalignment marking line; 17. Slit edge line. Specific embodiments
[0030] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.
[0031] Such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11As shown in the figure, the profiling welding detection system for the aerostat envelope of the present invention mainly includes an arc detection table 1, a detection camera 2, an arc slide rail 3, a camera mount 4, an alarm 5, and a digital display control unit 6; the arc slide rail 3 is parallel to the arc detection table 1 in the length direction, the detection camera 2 is installed at the lower end of the camera mount 4 to identify and detect the opening size and misalignment size of the envelope weld 7, the alarm 5 is fixed on the camera mount 4, and the digital display control unit 6 is connected to the detection camera 2, the alarm 5, a servo motor 8 for controlling the operation of the camera mount 4, and a vacuum pump for controlling the opening and closing of the vacuum adsorption holes 9 through cables or wires.
[0032] The arc detection table 1 is used to carry and fix the envelope weld 7 and position the envelope weld 7 in the length direction. The arc detection table 1 is a long strip circular arc. Through this profiling design, it can adapt to the arc arching after the envelope weld 7 is unfolded, thus ensuring the full laying out of the envelope weld area; the span of the arc detection table 1 is 10 m, and the arch height of the arc detection table 1 is measured as 1.5 m based on the ground horizontal line. Accordingly, the corresponding arc radius of the arc detection table 1 can be calculated as 13.1 m. To make the envelope weld 7 with local arching fully fit and unfold on the detection table surface of the arc detection table 1, this arc detection table 1 can be applied to the detection of envelope welds 7 with a curvature radius ≥ 13.1 m. At the same time, the arc length of the arc detection table 1 can be calculated as 15.8 m, that is, the length of the envelope weld 7 detected by a single scan is 15.8 m. The width of the arc detection table 1 is 150 mm. The arc detection table 1 is provided with length marks along the length direction of its arc-shaped table surface, and the minimum scale of the length marks is not less than 1 cm; the arc detection table 1 is made of tempered glass material to enhance the recognition and detection effect of the detection camera 2 on the envelope weld 7.
[0033] Vacuum adsorption holes 9 are distributed on the arc detection table 1. The diameter of the vacuum adsorption holes 9 is 8 mm, and each vacuum adsorption hole 9 is connected to the vacuum pump through an air pipe. The arc detection table 1 fixes the envelope weld 7 through vacuum adsorption.
[0034] The detection camera 2 is used to identify and detect the opening size and misalignment size of the envelope weld 7. The detection camera 2 uses an industrial camera, its pixel is not less than 1000W, the frequency is not less than 5 fps, and the light source provides sufficient light for the industrial camera to make the detection information clearer and more accurate. The detection accuracy of the opening size and misalignment size of the envelope weld 7 by the detection camera 2 can both reach 0.1 mm.
[0035] The arc-shaped slide rail 3 is used to carry the camera mount 4, enabling the inspection camera 2 to perform operations along an arc-shaped motion trajectory. The arc-shaped slide rail 3 is placed on one side of the arc-shaped inspection table 1, and the two are precisely parallel in the length direction. The arc-shaped slide rail 3 and the arc-shaped inspection table 1 do not share the same center of the circle, but they have the same radian. The span of the arc-shaped slide rail 3 is 10.5 m, and the arch height is 2 m. This design can leave enough space when the large bladder flap moves up to the arc-shaped inspection table 1.
[0036] The camera mount 4 is used to fix the inspection camera 2. The camera mount 4 is an L-shaped beam that can be telescoped up and down, making the vertical distance between the inspection camera 2 and the tabletop of the arc-shaped inspection table 1 adjustable. The vertical beam of the L-shaped beam can move up and down along the guiding hole of the cross beam, and the maximum adjustable displacement up and down is 800 mm. After the height of the vertical beam is positioned on the cross beam, it is locked with a locking screw. A servo motor 8 and a slider car 14 for driving the movement of the camera mount 4 are installed on the cross beam of the L-shaped beam. The camera mount 4 is installed on the slider car 14. The output shaft of the servo motor 8 is connected to the driving wheel 10. The four driving wheels 10 of the slider car 14 are in rolling connection with the arc-shaped slide rail 3. A pressure limiting rod 15 is provided between the slider car 14 and the arc-shaped slide rail 3. One end of the pressure limiting rod 15 is fixed to the bottom of the slider car 14, and the ball at the other end of the pressure limiting rod 15 contacts the arc-shaped slide rail 3, enabling the slider car 14 to run smoothly on the arc-shaped slide rail 3. By driving the driving wheel 10 of the slider car 14 with the servo motor 8, the camera mount 4 is made to slide along the arc trajectory of the arc-shaped slide rail 3. The sliding linear speed of the slider car 14 is 12 m / min. The movement speeds of the servo motor 8 and the slider car 14 correspond to the inspection speed V of the precision quality of the bladder weld 7, and V is adjustable within 0 - 15 m / min.
[0037] The alarm 5 is a voice broadcaster with a recording storage function and RS232 serial port control. It is fixed to the camera mount by a clamp and is used to give voice alarm prompts for the sections with abnormal or excessive opening dimensions, misalignment dimensions, or defects detected in the bladder weld 7. Voices such as "abnormal opening", "abnormal misalignment", and "abnormal detection" can be pre-recorded in the alarm 5 respectively. When the inspection camera 2 detects abnormal opening dimensions or misalignment dimensions of the bladder weld 7, the alarm 5 can immediately receive the voice alarm instruction from the digital display control unit 6 and give corresponding voice prompts: "abnormal opening" and "abnormal misalignment". When both of the above two abnormalities occur simultaneously at the same position of the bladder weld 7, a voice prompt: "abnormal detection" is given. When the dimensions of the bladder weld are normal during inspection, no alarm prompt is given.
[0038] The digital display control unit 6 uses an industrial control host computer, such as an industrial control host computer of Senke brand SK-19GBQX type, with a 19-inch screen, a hard disk capacity of 128G, and a memory of 4MB. It can implement two modes: an automatic scanning detection mode and a manual scanning detection operation for local detection. It can send corresponding instructions to the servo motor 8 and the detection camera 2 to perform scanning and monitoring tasks; it can send information instructions of "seam opening abnormality", "misalignment abnormality", and "detection abnormality" to the alarm 5 online; it can generate a curve with the detection displacement length of the capsule weld 7 as the abscissa and the seam opening size or misalignment size as the ordinate. By combining this curve with the length scale on the arc-shaped detection table 1, the position where the capsule weld 7 has defects can be quickly found; the digital display control unit 6 is provided with "capsule fixing" and "capsule releasing" buttons. Click the "capsule fixing" button to control the start of the vacuum pump, and make the capsule weld 7 fully fixed on the arc-shaped detection table 1 through the vacuum adsorption hole 9. After the detection is completed, click the "capsule releasing" button to release the capsule 11 by stopping the operation of the vacuum pump, so as to perform the detection of the next section of the capsule 11.
[0039] To clearly describe the detection process of the capsule weld 7, in this embodiment, the welding accuracy detection of the capsule weld 7 between the first capsule flap 12 and the second capsule flap 13 of the spherical capsule 11 is taken as an example. There is a splicing misalignment marking line 19 at the welding joint of the first capsule flap 12 and the second capsule flap 13, and the serial number 20 is the seam opening edge line of the first capsule flap 12 and the second capsule flap 13.
[0040] The span of the arc-shaped detection table 1 is 10m, the arch height is 1.5m, the arc radius of the arc-shaped detection table 1 is 13.1m, and the arc length is 15.8m; the diameter of the capsule 11 is 30m, then the radius is 15m ≥ the arc radius 13.1m of the arc-shaped detection table 1, so it can be ensured that the capsule weld 7 fits fully with the arc-shaped detection table 1 without arching deformation; the length of the capsule weld area is about 47m, and it can be scanned and detected in three times. Among them, the weld width = the width of the welding tape = 50mm, which is a fixed value. The weld accuracy quality detection criterion is: the seam opening size ≤ 1.5mm is qualified, and the seam opening size > 1.5mm is an over-standard abnormality (i.e., a seam opening defect); the misalignment size ≤ 2.5mm is qualified, and the misalignment size > 2.5mm is an over-standard abnormality (i.e., a misalignment defect).
[0041] The detection method of the airship capsule welding quality profiling detection system of the present invention includes the following steps: (a) Move the first section of the capsule flap weld 7 to the tabletop of the arc-shaped detection table 1 and unfold it, and make the capsule flap weld 7 just fall within the detection area. The length of the first section of the capsule flap weld 7 to be detected = the arc length of the arc-shaped detection table 1 = 15.8m; (b) Press the "capsule fixing" button on the digital display control unit 6 to open the vacuum adsorption hole 9 and adsorb and fix the capsule 11 on the tabletop of the arc-shaped detection table 1; (c) Adjust the camera mount 4 so that the vertical distance from the bottom lens of the detection camera 2 to the bladder weld 7 on the surface of the arc detection table 1 is 20 mm; (d) Enter the code number of the bladder 11 and the weld batch number on the digital display control unit 6; (e) Input the detection speed V as 10 m / min on the digital display control unit 6; (f) Select "Automatic Scanning" on the digital display control unit 6. After pressing the operation key, the detection camera 2 completes the scanning detection of the opening size and misalignment size of the bladder weld 7 within 95 s. During the detection process, when the opening size > 1.5 mm and the misalignment size > 2.5 mm, the alarm 5 is immediately activated to give an on-line voice alarm prompt; otherwise, the alarm prompt is not activated. Synchronously with the detection, the digital display control unit 6 on-line generates a detection length displacement - opening size curve and a detection length displacement - misalignment size curve. According to the curves, the occurrence location of the weld defects of the bladder weld 7 can be traced on the spot; (g) After this section of scanning is completed, the following data are automatically generated on the digital display control unit 6: the detection length, the cumulative opening defect length, the opening defect PPM, and the misalignment defect PPM of the first section of the bladder flap weld 7; (h) Press the pause button on the digital display control unit 6, and the abscissa length displacement in the detection length displacement - opening size curve does not return to zero; (i) Repeat the above steps (a) to (h). After the detection of the second and third sections of the bladder flap weld 7, the precision detection of one batch of bladder welds 7 is completed.
[0042] It is not difficult to see from the above embodiments that the pure scanning detection of the precision of the bladder weld 7 takes less than 5 minutes, the detection efficiency is more than five times higher than that of manual visual caliper detection, the detection operation intensity is significantly reduced, and the detection precision is effectively guaranteed. In addition, the quality detection PPM data and the detection report, etc. can be completed synchronously.
Claims
1. A profiling detection system for aerostat bladder welding quality, characterized by: The airship bladder welding quality profiling detection system comprises an arc detection platform (1), a detection camera (2), an arc slide rail (3), a camera frame (4), an alarm (5), and a digital display control unit (6); the arc slide rail (3) is parallel to the arc detection platform (1) along the length direction; the detection camera (2) is mounted on the lower end of the camera frame (4) to identify and detect the seam size and misalignment size of the bladder body weld (7); the alarm (5) is fixed to the camera frame (4) by a clamp; the digital display control unit (6) is connected to the detection camera (2), the alarm (5), a servo motor (8) for controlling the operation of the camera frame (4), and a vacuum pump for controlling the opening and closing of the vacuum adsorption hole (9) by cables or wires.
2. The aerostat bladder welding quality profiling detection system according to claim 1 is characterized in that: The arc-shaped detection platform (1) carries and fixes the capsule weld (7), and positions the capsule weld (7) along the length direction. The arc-shaped detection platform (1) is in the shape of a long circular arc. The span of the arc-shaped detection platform (1) is 4 m to 50 m. The arc-shaped arch height of the arc-shaped detection platform (1) measured from the ground horizontal line is 0.7 m to 1.6 m. The width of the arc-shaped detection platform (1) is 100 mm to 600 mm. The arc-shaped detection platform (1) is made of tempered glass, quartz or acrylic transparent material.
3. The aerostat bladder welding quality profiling detection system according to claim 1 is characterized in that: The arc-shaped detection platform (1) is provided with a length scale along the length direction of its own arc-shaped platform surface, and the minimum scale of the length scale is not less than 1 cm.
4. The aerostat bladder welding quality profiling detection system according to claim 1 is characterized in that: The arc-shaped detection platform (1) is provided with vacuum adsorption holes (9), the diameter of the vacuum adsorption holes (9) is 4 mm to 20 mm, each vacuum adsorption hole (9) is connected to a vacuum pump via an air pipe, and the arc-shaped detection platform (1) fixes the capsule weld (7) by vacuum adsorption.
5. The aerostat bladder welding quality profiling detection system according to claim 1 is characterized in that: The detection camera (2) is an industrial camera with a pixel of not less than 1000W and a frequency of not less than 5fps. The detection camera (2) has a detection accuracy of the seam size and misalignment size of the capsule weld (7) within 0.2mm.
6. The aerostat bladder welding quality profiling detection system according to claim 1 is characterized in that: The arc-shaped slide rail (3) is placed on one side of the arc-shaped detection platform (1); the arc-shaped slide rail (3) and the arc-shaped detection platform (1) are cocentric or non-cocentric; the arc-shaped slide rail (3) and the arc-shaped detection platform (1) have the same curvature; the span of the arc-shaped slide rail (3) is 4 m to 50 m, and the arch height is 0.71 m to 2.4 m.
7. The aerostat bladder welding quality profiling detection system according to claim 1 is characterized in that: The camera frame (4) fixes the detection camera (2). The camera frame (4) is an L-shaped beam frame that can be extended and retracted up and down, so that the vertical distance between the detection camera (2) and the table surface of the arc-shaped detection table (1) can be adjusted. The vertical beam of the L-shaped beam frame can move up and down along the guide hole of the horizontal beam. The maximum adjustable displacement is 800 mm. After the vertical beam is positioned at a height on the horizontal beam, it is locked with a locking screw. A servo motor (8) and a slider trolley (14) for driving the camera frame (4) to move are installed on the horizontal beam of the L-shaped beam frame. The camera frame (4) is installed on the slider trolley (14). The output shaft of the servo motor (8) is connected to the driving wheel (10 ), the four driving wheels (10) of the slider trolley (14) are rollingly connected to the arc-shaped slide rail (3), a pressure limit rod (15) is provided between the slider trolley (14) and the arc-shaped slide rail (3), one end of the pressure limit rod (15) is fixed to the bottom of the slider trolley (14), and the ball bearing at the other end of the pressure limit rod (15) contacts the arc-shaped slide rail (3), and the driving wheels (10) of the slider trolley (14) are driven by the servo motor (8) to realize the camera frame (4) sliding along the arc track of the arc-shaped slide rail (3), and the movement speed V of the servo motor (8) and the slider trolley (14) is adjustable within the range of 0 to 15 m / min.
8. The aerostat bladder welding quality profiling detection system according to claim 1 is characterized by: The alarm (5) has a voice alarm function. When the size of the opening or the misalignment of the bladder weld (7) is detected to be excessive or abnormal, the alarm (5) receives a voice alarm command from the digital display control unit (6) and issues voice prompts correspondingly: "opening abnormality", "misalignment abnormality", and "detection abnormality". When "opening abnormality" and "misalignment abnormality" occur at the same position of the bladder weld (7), the alarm (5) issues a voice prompt: "detection abnormality". When the size of the bladder weld is detected to be normal, the alarm (5) does not issue an alarm prompt. The alarm (5) uses a voice broadcaster with a recording storage function and RS232 serial port control.
9. The aerostat bladder welding quality profiling detection system according to claim 1 is characterized in that: The digital display control unit (6) has two modes: an automatic scanning detection mode and a manual scanning detection operation for local detection, and simultaneously issues corresponding instructions to the servo motor (8) and the detection camera (2) to perform scanning monitoring tasks; issues voice prompt instructions such as "opening abnormality", "misalignment abnormality", "welding abnormality", and "detection abnormality" to the alarm (5) online; and can generate a curve with the displacement length of the capsule weld (7) as the horizontal coordinate and the opening size or misalignment size as the vertical coordinate, and the curve is combined with the arc detection table (1 ) on the length scale to quickly find the position where the defect of the capsule weld (7) occurs; the digital display control unit (6) is provided with "capsule fixation" and "capsule release" buttons, and the "capsule fixation" button is clicked to control the start of the vacuum pump, so that the capsule weld (7) is fully fixed on the arc-shaped detection table (1) through the vacuum adsorption hole (9); after the detection is completed, the "capsule release" button is clicked to stop the operation of the vacuum pump to release the capsule (11), so as to carry out the detection of the next section of the capsule (11); the digital display control unit (6) uses the Senke brand SK-19GBQX industrial control host computer.
10. A detection method for the aerostat bladder welding quality profiling detection system according to claim 1, characterized in that: The detection method comprises the following steps: (a) moving the first section of the capsule valve weld (7) onto the table surface of the arc-shaped detection table (1) and unfolding it, so that the capsule valve weld (7) just falls within the detection area, and the arc length of the arc-shaped detection table (1) is adapted to the arc length of the first section of the capsule valve weld (7) to be detected; (b) pressing the "capsule fixing" button on the digital display control unit (6) to open the vacuum adsorption hole (9) to adsorb and fix the capsule (11) on the surface of the arc-shaped detection table (1); (c) adjusting the camera frame (4) to adjust the vertical distance from the bottom lens of the detection camera (2) to the capsule weld (7) on the surface of the arc-shaped detection platform (1); (d) entering the code and weld batch of the capsule (11) on the digital display control unit (6); (e) Input the detection speed V on the digital display control unit (6); (f) Select "auto scan" on the digital display control unit (6) and press the run button. The detection camera (2) completes the scanning detection of the seam size and the misalignment size of the capsule weld (7) within the set time. During the detection process, the alarm (5) issues an online voice prompt for the seam size > 1.5 mm and the misalignment size > 2.5 mm. In synchronization with the detection, the digital display control unit (6) generates online detection length displacement-seam size curves and detection length displacement-misalignment size curves. Based on the curves, the weld defect location of the capsule weld (7) can be traced back in time. (g) After the scanning of this section is completed, the following data are automatically generated on the digital display control unit (6): the detected length of the first section of the flap weld (7), the cumulative length of the seam defect, the PPM of the seam defect, and the PPM of the misalignment defect; (h) Press the pause button on the digital display control unit (6) to detect that the horizontal axis length displacement in the length displacement-slit size curve is not cleared to zero; (i) Repeating the above steps (a) to (h) to inspect the second and third sections of the capsule valve welds (7), the precision inspection of a batch of capsule body welds (7) is completed.