Optical size detection device and detection method for CPVC pipe detection

Abstract

This invention relates to the field of testing equipment technology, specifically to an optical dimension testing device and method for CPVC pipe testing. It is adaptable to long pipes, enabling full-coverage testing of the pipe's interior. The testing path is conveniently laid out, and its practicality is further enhanced while ensuring reliable testing. The device includes a base, a testing body, and a transport body. A suspension bracket is mounted on the base, and a suspension adjustment device is fixedly connected to the suspension bracket. A first servo motor is mounted outside the base. The testing body includes a mounting frame, with a rotating frame rotatably connected to it. A laser rangefinder is mounted outside the rotating frame. A second servo motor is mounted outside the mounting frame, driving the rotation of the rotating frame relative to the mounting frame. The mounting frame is mounted on the suspension adjustment device. The transport body includes a first rotating shaft and a second rotating shaft, both rotatably connected to the base. Multiple first connecting arms are fixedly connected to the first rotating shaft.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, specifically to an optical dimension testing device and method for testing CPVC pipes. Background Technology

[0002] As is well known, CPVC pipes are made of chlorinated polyvinyl chloride. CPVC pipe optical dimension inspection equipment is a non-contact measurement device based on optical technology, which can detect parameters of CPVC pipes such as outer diameter, ovality and roundness online.

[0003] A search revealed that Chinese Patent Publication No. CN119268548A discloses a metal tube size detection device. Its general description includes a base, the top of which is fixed to the bottom center of a placement frame via two sets of first telescopic rods. The top center of the base is fixed to the bottom center of the placement frame via a support mechanism. A drive motor is fixedly installed on the left side of the placement frame. The outer thread of a first threaded rod is threadedly connected to the bottom of a movable base. A laser measuring instrument body is rotatably mounted on the top of the movable base. In use, the first threaded rod drives a second threaded rod to rotate, which in turn drives a limiting component. A conveying control component allows for angle adjustment of the laser measuring instrument body, facilitating the measurement of bent metal tubes. Chinese Patent Publication No. CN2... Patent 20912228U discloses a glass tube size inspection device, which is roughly described as including a horizontal base, a vertical support, a turntable on the horizontal base, a bottom fixing column fixedly installed at the rotation center of the turntable along the rotation axis, the vertical support fixedly installed on the horizontal base, a top fixing column rotatably installed on the top of the vertical support, the top fixing column and the bottom fixing column having the same axis, and elastic components on both the bottom fixing column and the top fixing column, the elastic components being interference-fitted with the glass tube to be inspected, and a measuring device installed on the vertical support. The measuring device includes a vertically sliding measuring component and a fixed measuring component. In use, while fixing the glass tube to be inspected, it drives the glass tube to rotate, and in conjunction with the sliding measuring component and the fixed measuring component installed on the vertical support, it quickly and accurately measures multiple dimensions of the glass tube to be inspected.

[0004] While the aforementioned existing technical solutions can achieve pipe inspection, in actual production, CPVC pipes are mostly standard fixed length specifications such as four meters or six meters. Therefore, the adaptability of the aforementioned solutions to long pipes still needs to be improved, especially in the scenario of internal inspection of long pipes, where their practicality is clearly insufficient. Summary of the Invention

[0005] To address the problems in the prior art, this invention provides an optical dimension inspection device and method for CPVC pipe inspection. It can be adapted to long pipes, achieve full coverage inspection of the pipe interior, and has a convenient inspection path layout. While ensuring reliable inspection implementation, its practicality is also further enhanced.

[0006] The technical solution adopted by this invention to solve its technical problem is: an optical dimension inspection device for CPVC pipe inspection, comprising a base, an inspection body, and a transfer body. A suspension bracket is mounted on the base, and a suspension adjustment device is fixedly connected to the suspension bracket. A first servo motor is mounted outside the base. The inspection body includes a mounting frame, and a rotating frame is rotatably connected to the mounting frame. A laser rangefinder is mounted outside the rotating frame. A second servo motor is mounted outside the mounting frame, and the second servo motor drives the rotation of the rotating frame relative to the mounting frame. The mounting frame is mounted on the suspension adjustment device. The transfer body includes a first rotating shaft and a second rotating shaft, both of which are rotatably connected to the base. Multiple first connecting arms are fixedly connected to the first rotating shaft, and these multiple first connecting arms are used to receive the pipe to be inspected. Multiple second connecting arms are fixedly connected to the second rotating shaft. The first servo motor drives the synchronous rotation of the first rotating shaft and the second rotating shaft.

[0007] Specifically, the suspension adjustment device includes a main winding disc, an auxiliary winding disc, a main servo motor, and an auxiliary servo motor. The main winding disc and the auxiliary winding disc are rotatably connected to the suspension bracket. The main servo motor and the auxiliary servo motor are both mounted on the suspension bracket. The main servo motor and the auxiliary servo motor are used to drive the rotation of the main winding disc and the auxiliary winding disc, respectively. The main winding disc and the auxiliary winding disc are respectively equipped with a main winding tube and an auxiliary winding tube. The mounting frame has a central opening for the main winding tube to pass through. The auxiliary winding tube is fixedly connected to the mounting frame.

[0008] Specifically, an iron block is fixedly connected to the front end of the main winding tube, a lifting frame is slidably connected to the base, an end plate is fixedly connected to the lifting frame, and multiple permanent magnets are fixedly connected to the front end of the end plate. The iron block matches the permanent magnets, and an electric telescopic rod is installed on the base. The electric telescopic rod is used for adjusting and controlling the height of the lifting frame relative to the base.

[0009] Specifically, a horizontal support rod is rotatably connected inside the suspension bracket, and a guide frame is fixedly connected to the horizontal support rod. The guide frame is provided with a main guide hole and an auxiliary guide hole. The main winding tube and the auxiliary winding tube pass through the main guide hole and the auxiliary guide hole, respectively. An external servo motor is installed outside the suspension bracket, and the output shaft of the external servo motor is connected to the horizontal support rod in a transmission connection.

[0010] Specifically, two quick-connect pipes are fixedly connected to the suspension bracket, and each quick-connect pipe is rotatably connected to a connecting pipe. The two quick-connect pipes are respectively connected to the two connecting pipes, and the two connecting pipes are respectively fixedly connected to the main winding pipe and the auxiliary winding pipe.

[0011] Specifically, inner support wheels and outer support wheels are rotatably installed on the first and second connecting arms. Multiple inner support wheels are driven by support belts, and multiple support belts are driven by multiple outer support wheels. A variable frequency motor is installed on the outside of the first connecting arm at the middle position, and the variable frequency motor is driven by the inner support wheels inside the first connecting arm at the middle position.

[0012] Specifically, each of the first connecting arms is fixedly connected to an upper limit arc frame and a lower limit arc frame, and the base is fixedly connected to a plurality of intermediate strip frames, each of the intermediate strip frames being provided with a limit elevation and a guide slope.

[0013] Specifically, both the first and second rotating shafts are fixedly connected to transmission gears, the two transmission gears mesh with each other, and the output shaft of the first servo motor is connected to the second rotating shaft in a transmission connection.

[0014] Specifically, the second servo motor, the main servo motor, and the auxiliary servo motor are all equipped with drive gears, and the main winding disk, the auxiliary winding disk, and the rotating frame are all fixedly connected with transmission gear rings. The three drive gears mesh with the three transmission gear rings respectively.

[0015] An optical dimension inspection method for CPVC pipe inspection includes the following steps: S1. Place the CPVC pipe to be inspected on the first and second connecting arms of the transfer body. Drive the first and second rotating shafts to rotate synchronously through the first servo motor, thereby driving multiple first and second connecting arms to operate in conjunction, adjusting the CPVC pipe to be inspected to the inspection station and completing the alignment of the pipe. S2. The mounting frame is constructed by using the suspension adjustment device and matching pipes to form the moving path of the mounting frame. Then, the entire mounting frame is moved to adjust its position so that the laser rangefinder on the outside of the mounting frame is positioned relative to the pipes. It is then adapted to different positions on the pipes for detection and positioning, and detection is performed. S3. During the inspection process, the second servo motor runs, driving the rotating frame to rotate relative to the mounting frame, thereby adjusting the detection angle of the laser rangefinder to enrich the inspection position and angle of the pipe and form the inspection point coverage. S4. After the size inspection of a single CPVC pipe is completed, the laser rangefinder is turned off and the rotating frame is rotated and reset relative to the mounting frame by the second servo motor. The suspension adjustment device is then controlled to form a storage position. Then, the first servo motor is restarted to drive the first and second rotating shafts to rotate synchronously. The inspected pipe is rotated out of the inspection station through the second connecting arm. At the same time, the first connecting arm will receive the next inspected pipe to achieve continuous transport between the previous and the next inspected pipe.

[0016] The beneficial effects of this invention are: (1) The optical dimension detection equipment and detection method for CPVC pipe detection described in this invention can form a detection data acquisition unit with the pipe to be detected through the design of the detection body, which facilitates the quantitative processing of pipe dimension data.

[0017] (2) The optical dimension detection equipment and detection method for CPVC pipe detection described in this invention can be matched with the pipe to be detected through the design of the transfer body, forming a receiving, flipping and conveying mechanism, so that the pipe can complete the detection and positioning action at the detection body and ensure the detection coverage.

[0018] (3) The optical dimension detection equipment and detection method for CPVC pipe detection described in this invention can form an installation support structure with the detection body through the design of the suspension adjustment device, which facilitates the movement path of the detection body relative to the pipe to be detected. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 For the present invention Figure 1 A magnified schematic diagram of the partial structure at point A in the middle; Figure 3 For the present invention Figure 1 A magnified view of the structure at point B in the middle; Figure 4 This is a three-dimensional structural diagram of the first connecting arm, the upper limit arc frame, and the lower limit arc frame of the present invention. Figure 5 This is a three-dimensional structural diagram of the inclined pipe rack used in conjunction with the present invention. Figure 6 This is a three-dimensional structural schematic diagram showing a partial cross-section of the present invention; Figure 7 For the present invention Figure 6 A magnified schematic diagram of the local structure at point C; Figure 8This is a three-dimensional structural diagram of the entire inclined pipe rack used in this invention from another angle; Figure 9 This is a three-dimensional structural diagram of the first connecting arm, upper limit arc frame, and lower limit arc frame of the present invention, viewed from below. Figure 10 This is a three-dimensional structural diagram of the rotating frame, laser rangefinder, and second servo motor of the present invention. Figure 11 This is a three-dimensional structural diagram showing the assembly and disassembly of the mounting frame, rotating frame, and auxiliary winding tube of the present invention. Figure 12 This is a three-dimensional structural diagram of the mounting frame of the present invention with auxiliary wheels installed inside; Figure 13 A three-dimensional structural diagram of the entire inclined pipe rack used in this invention, viewed from below; Figure 14 This is a three-dimensional structural diagram of the intermediate support frame of the present invention mounted on the base; Figure 15 This is a three-dimensional structural diagram of the unfolded main winding tube and auxiliary winding tube of the present invention; Figure 16 This is a schematic diagram of the structure of the first connecting arm of the present invention rotating and falling to receive and inspect the pipe material; Figure 17 This is a schematic diagram of the structure of the present invention, in which the first and second connecting arms rotate and rise synchronously relative to each other to assist in positioning and adjusting the height of the pipe to be tested. Figure 18 This is a schematic diagram of the structure of the first and second connecting arms of the present invention, which rotate and fall synchronously relative to each other after the pipe inspection is completed, respectively receiving the pipe under inspection and transferring the pipe after inspection. Figure 19 This is a three-dimensional structural diagram of the upper rotating wheel, lower rotating wheel, and auxiliary servo motor of the present invention.

[0021] In the diagram: 1. Base; 2. Suspension bracket; 3. First servo motor; 4. Mounting bracket; 5. Rotating bracket; 6. Laser rangefinder; 7. Second servo motor; 8. First rotating shaft; 9. Second rotating shaft; 10. First connecting arm; 11. Second connecting arm; 12. Main winding reel; 13. Auxiliary winding reel; 14. Main servo motor; 15. Auxiliary servo motor; 16. Main winding tube; 17. Auxiliary winding tube; 18. Iron block; 19. Lifting frame; 20. End plate; 21. Permanent magnet; 22. Electric telescopic rod; 23. 24. Horizontal support rod; 25. Guide frame; 26. Main guide hole; 27. Auxiliary guide hole; 28. External servo motor; 29. ​​Quick-connect pipe; 30. Connecting pipe; 31. Inner support wheel; 32. Outer support wheel; 33. Support belt; 34. Variable frequency motor; 35. Upper limit arc frame; 36. Lower limit arc frame; 37. Intermediate strip frame; 38. Limiting facade; 39. Guide slope; 40. Transmission gear; 41. Drive gear; 42. Transmission gear ring; 43. Upper rotating wheel; 44. Lower rotating wheel; 55. Auxiliary servo motor. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] Example

[0024] Please see Figures 1-19 An optical dimension inspection device for CPVC pipe inspection includes a base 1, an inspection body, and a transport body. A suspension bracket 2 is mounted on the base 1, and a suspension adjustment device is fixedly connected to the suspension bracket 2. A first servo motor 3 is mounted outside the base 1. The inspection body includes a mounting frame 4, a rotating frame 5 is rotatably connected to the mounting frame 4, a laser rangefinder 6 is mounted outside the rotating frame 5, and a second servo motor 7 is mounted outside the mounting frame 4. The second servo motor 7 drives the rotation of the rotating frame 5 relative to the mounting frame 4. Through the design of the inspection body, it can form a data acquisition unit with the pipe to be inspected, facilitating the quantification and processing of pipe dimension data. The mounting frame 4 is mounted on the suspension adjustment device, which includes a main winding disc. 12. Auxiliary winding disc 13, main servo motor 14 and auxiliary servo motor 15. The main winding disc 12 and auxiliary winding disc 13 are rotatably connected to the suspension bracket 2. The main servo motor 14 and auxiliary servo motor 15 are both mounted on the suspension bracket 2. The main servo motor 14 and auxiliary servo motor 15 are used to drive the rotation of the main winding disc 12 and auxiliary winding disc 13, respectively. The main winding disc 12 and auxiliary winding disc 13 are respectively equipped with a main winding tube 16 and an auxiliary winding tube 17. The mounting bracket 4 has a central opening for the main winding tube 16 to pass through. The auxiliary winding tube 17 is fixedly connected to the mounting bracket 4. Through the design of the suspension adjustment device, it can be matched with the detection body to form an installation support structure, which facilitates the detection body to build a movement path relative to the pipe to be detected.

[0025] It should be further explained that a horizontal support rod 23 is rotatably connected inside the suspension bracket 2, and a guide frame 24 is fixedly connected to the horizontal support rod 23. The guide frame 24 has a main guide hole 25 and an auxiliary guide hole 26. The main winding tube 16 and the auxiliary winding tube 17 pass through the main guide hole 25 and the auxiliary guide hole 26 respectively. An external servo motor 27 is mounted outside the suspension bracket 2. The output shaft of the external servo motor 27 is connected to the horizontal support rod 23. When the external servo motor 27 runs, it can adjust the direction of the guide frame 24, thereby... To facilitate adjustment of the overhang direction of the main winding tube 16 and the auxiliary winding tube 17, two quick-connect pipes 28 are fixedly connected to the suspension bracket 2. Each quick-connect pipe 28 is rotatably connected to a connecting pipe 29. The two quick-connect pipes 28 are respectively connected to the two connecting pipes 29, and the two connecting pipes 29 are respectively fixedly connected to the main winding tube 16 and the auxiliary winding tube 17. The quick-connect pipes 28 enable the main winding tube 16 and the auxiliary winding tube 17 to be connected to the external air supply component, ensuring normal air supply while allowing the main winding tube 16 and the auxiliary winding tube 17 to communicate. The main winding tube 16 is rotatably adjustable. An iron block 18 is fixedly connected to the front end of the main winding tube 16. A lifting frame 19 is slidably connected to the base 1. An end plate 20 is fixedly connected to the lifting frame 19. Multiple permanent magnets 21 are fixedly connected to the front end of the end plate 20. The iron block 18 matches the permanent magnets 21. An electric telescopic rod 22 is installed on the base 1. The electric telescopic rod 22 is used for adjusting and controlling the height of the lifting frame 19 relative to the base 1. The transfer body includes a first rotating shaft 8 and a second rotating shaft 9. Both the first rotating shaft 8 and the second rotating shaft 9 are rotatably connected to the base 1. Multiple first connecting arms 10 are fixedly connected to the first rotating shaft 8. The multiple first connecting arms 10 are used to receive the tube to be tested. Multiple second connecting arms 11 are fixedly connected to the second rotating shaft 9. A first servo motor 3 is used to drive the synchronous rotation of the first rotating shaft 8 and the second rotating shaft 9. Through the design of the transfer body, it can match the tube to be tested, forming a receiving, flipping and conveying mechanism, so that the tube can complete the testing and positioning action at the testing body, ensuring the testing coverage.

[0026] Furthermore, it should be noted that inner support wheels 30 and outer support wheels 31 are rotatably installed on both the first connecting arm 10 and the second connecting arm 11. Multiple inner support wheels 30 are driven by support belts 32, which are respectively driven by multiple outer support wheels 31. A variable frequency motor 33 is installed on the outside of the first connecting arm 10 in the middle position. The variable frequency motor 33 is driven by the inner support wheels 30 inside the first connecting arm 10 in the middle position, facilitating the rotation drive of the pipe to be tested when placed between the first connecting arm 10 and the second connecting arm 11. Upper limit arc frames 34 and lower limit arc frames 35 are fixedly connected to the outside of multiple first connecting arms 10. Multiple intermediate strip frames 36 are fixedly connected to the base 1. Each intermediate strip frame 36 is provided with a limiting surface 37 and a guide slope 38. The limiting surface 37 can restrict the pipe entering the first connecting arm 10 from entering the second connecting arm 11. When the first connecting arm 10 and the second connecting arm 11 rotate synchronously relative to each other... After being raised, the pipe's position is restricted, and the pipe is raised to facilitate height adaptation between the pipe and the rotating frame 5, thus facilitating subsequent inspection operations. When the pipe falls again after inspection, it will contact the guide slope 38. Under the guidance of the guide slope 38, the pipe will not re-enter the area on the first connecting arm 10, but will enter the area on the second connecting arm 11, thus facilitating the sliding and unloading of the inspected pipe relative to the second connecting arm 11. The first rotating shaft 8 and the second rotating shaft 9 are both fixedly connected to transmission gears 39, which mesh with each other. The output shaft of the first servo motor 3 is connected to the second rotating shaft 9. The second servo motor 7, the main servo motor 14, and the auxiliary servo motor 15 are all equipped with drive gears 40. The main winding disc 12, the auxiliary winding disc 13, and the rotating frame 5 are all fixedly connected to transmission gear rings 41, and the three drive gears 40 mesh with the three transmission gear rings 41 respectively.

[0027] In this embodiment, the laser rangefinder 6, the first servo motor 3, the second servo motor 7, the main servo motor 14, the auxiliary servo motor 15, the electric telescopic rod 22, the external servo motor 27, and the frequency converter 33 are all conventional devices known to those skilled in the art and purchased from the market. In this solution, we only use them without modifying their structure and function. Their setting method, installation method, and electrical connection method can be easily explained by those skilled in the art by following the instructions for use. Therefore, they will not be described in detail here.

[0028] In summary, the working principle of the optical dimension inspection equipment for CPVC pipe inspection is as follows: Before use, the entire optical dimension inspection equipment for CPVC pipe inspection is first installed at the corresponding working position, and a slanted pipe rack is installed. Air pumps are installed for the two quick-connect pipes 28. Then, the power supply circuit and control circuit of the entire electrical equipment are installed. After installation, adjustments are made to ensure that each air pump, electric actuator, and laser rangefinder 6 operates normally. After debugging without problems, formal inspection work can begin. During formal inspection, the pipe to be inspected is first placed on the slanted pipe rack. Because the support surface formed by the slanted pipe rack is inclined, the pipe will move towards the base 1 under its own weight. The upper limit arc frame 34 and the lower limit arc frame 35 can cooperate to further limit the movement of the pipe. The first servo motor 3 is started, and the first servo motor 3 directly drives the second rotating shaft 9 to rotate. The second rotating shaft 9 meshes with the transmission gear 39 at the end of the first rotating shaft 8 via a transmission gear 39 fixed at its end, enabling the first rotating shaft 8 and the second rotating shaft 9 to rotate synchronously in opposite directions at the same speed. This drives multiple sets of first connecting arms 10 on the first rotating shaft 8 and multiple sets of second connecting arms 11 on the second rotating shaft 9 to operate synchronously, facilitating the receiving, lifting, and alignment of pipes. First, the first connecting arms 10 and the second connecting arms 11 are controlled to rotate and fall synchronously until the top of the upper limit arc frame 34 rotates and falls to the point where it can no longer limit the pipe. The pipe closest to the first connecting arm 10 will roll into the first connecting arm 10 under its own weight. Since the first connecting arm 10 is in a state where the right side is lower and the left side is higher in this state, the pipe that rolls into the first connecting arm 10 will not continue to roll to the left. In this way, it can restrict another pipe from entering the first connecting arm 10 from the inclined pipe rack, thereby ensuring that only one pipe enters each time the first connecting arm 10 falls.

[0029] Then, the first connecting arm 10 is controlled to rotate and rise. As the first connecting arm 10 rotates and rises, the upper limit bracket 34 will form a limit between the pipe entering the first connecting arm 10 and the adjacent pipe on its right. Therefore, as the first connecting arm 10 rotates and rises until its right side is raised, the pipe on it will move to the left on the first connecting arm 10 until the pipe contacts the limiting surface 37 and is limited by the limiting surface 37. As the first connecting arm 10 rotates and rises, the pipe entering the first connecting arm 10 will also be pushed up until it crosses the limiting surface 37. After that, the pipe will enter the area on the guide slope 38, and the second connecting arm 11 will rotate and rise synchronously with the first connecting arm 10. This clamps the pipe wall, achieving pipe detection and positioning. After the pipe is in place, the suspension adjustment device starts working. Under the meshing transmission action of the mutually adapted drive gear 40 and transmission gear ring 41, the main servo motor 14 and auxiliary servo motor 15 operate to realize the rotation control of the main winding disc 12 and auxiliary winding disc 13, respectively, thereby realizing the extension length adjustment of the main winding tube 16 and auxiliary winding tube 17. With the extension control of the main winding tube 16 and auxiliary winding tube 17, and the guidance action of the main guide hole 25 and auxiliary guide hole 26, the extension and retraction direction of the main winding tube 16 and auxiliary winding tube 17 is limited. At the same time, the operation of the external servo motor 27 can control the rotation of the horizontal support rod 23, thereby driving the guide frame 24 to deflect as a whole, forming the main winding tube 16 and auxiliary winding tube 17. The extension direction of the auxiliary winding tube 17 is controlled by two air pumps operating synchronously with the extension movements of the main winding tube 16 and the auxiliary winding tube 17 to ensure air pressure control within them. This ensures stable extension of both tubes. First, the main winding tube 16 should be extended while the auxiliary winding tube 17 remains fully wound. During this process, the main winding tube 16 passes through the center opening and moves towards the end plate 20 until the iron block 18 contacts it. Under the magnetic attraction of the permanent magnet 21 at the front end of the end plate 20, the iron block 18 forms a stable fit with the end plate 20. Because the auxiliary winding tube 17 restricts the position of the mounting bracket 4, the mounting bracket 4 does not accompany the main winding tube. The extension of tube 16 forms a synchronous movement, thus reducing the load on the main winding tube 16 and the downward swing amplitude during the suspension process, ensuring that the main winding tube 16 can extend smoothly. Then, the electric telescopic rod 22 is controlled to drive the lifting frame 19 to slide up and down as a whole, causing the end plate 20 and permanent magnet 21 to change their height positions. This allows the permanent magnet 21 to drive the iron block 18 to adjust its height synchronously, achieving the horizontal layout of the main winding tube 16 and ensuring the straightness of the movement path of the detection body. If the tube detection area is outside the tube, the main winding tube 16 passes through the upper side of the tube. After completing the single detection path construction, the main winding tube 16 is kept in the extended state, and it only needs to be moved through the first connecting arm 10 and the second connecting arm 11.Multiple pipes are controlled to pass sequentially through the main winding tube 16 and complete the inspection. If the inspection area is inside the pipe, the main winding tube 16 is controlled to pass through the pipe. After a single inspection path is established and the internal inspection of the pipe is completed, the main winding tube 16 needs to be stored first, and then the inspected pipe is unloaded. After the next inspected pipe is in place, the inspection path needs to be re-established.

[0030] After the detection path is set up, the main winding tube 16 is kept in an extended state and the internal pressure is kept stable. The auxiliary winding tube 17 is controlled to extend, so that the mounting frame 4 moves along the main winding tube 16. This causes the laser rangefinder 6 outside the rotating frame 5 to move relative to the pipe and detect different positions on the pipe. During the detection process, the second servo motor 7 runs, controlling the corresponding drive gear 40 to run. Under the meshing transmission action of the matching drive gear 40 and the transmission gear ring 41, the second servo motor 7 can drive the rotating frame 5 to rotate relative to the mounting frame 4, driving the laser rangefinder 6 to complete circumferential multi-angle attitude adjustment. Combined with the axial linear movement formed by the extension and retraction of the mounting frame 4 and the auxiliary winding tube 17, a composite detection motion trajectory is constructed. At the same time, the variable frequency motor 33 runs, which can directly drive the corresponding inner support wheel 30 to rotate. The rotating inner support wheel 30 drives the matching outer support wheel 31 to rotate synchronously through the support belt 32. Relying on the friction transmission between the moving support belt 32 and the pipe wall, the CPVC pipe to be detected is driven at low speed. The rotation, combined with the pipe's own rotation, enables all-round optical acquisition of dimensional parameters such as the outer diameter, roundness, and ellipticity of the CPVC pipe, effectively covering the inspection needs of various positions on the entire length of the pipe. After the inspection of a single pipe is completed, the second servo motor 7 first drives the rotating frame 5 to rotate back to its original position, the laser rangefinder 6 returns to its initial inspection posture and pauses data acquisition, and then the auxiliary servo motor 15 drives the auxiliary winding disc 13 to rotate in the opposite direction, realizing the storage of the auxiliary winding tube 17. During the storage process, the air supply pump should operate in coordination to appropriately reduce the pressure inside the auxiliary winding tube 17. After the mounting frame 4 moves and resets relative to the guide frame 24, the main servo motor 14 runs to retract the main winding tube 16, and then the first servo motor 3 starts again, driving the first connecting arm 10 and the second connecting arm 11 to rotate and fall synchronously. Relying on the guide slope 38 of the intermediate frame 36, the guide unloading is completed, allowing the inspected pipe to slide out of the work position along the second connecting arm 11. At the same time, the first connecting arm 10 simultaneously receives the next pipe to be inspected, ensuring continuous operation of the inspection work.

[0031] To reduce frictional loss between the center opening and the main winding tube 16 during movement, a rolling wheel can be installed inside the center opening. This rolling friction replaces sliding friction, thus reducing frictional loss. A specific example is attached. Figure 12As shown in the accompanying drawings, the two laser rangefinders 6 are installed symmetrically from left to right in this embodiment. In actual use, an appropriate number of laser rangefinders 6 can be selected according to specific needs. The number of laser rangefinders 6 can be increased or decreased as appropriate, but at least one should be set. When the laser rangefinder 6 is performing a detection operation, its internal laser emits a laser beam to illuminate the CPVC. The scattered light reflected from the pipe wall surface is imaged onto a photodetector inside. When the distance between the pipe surface and the laser rangefinder 6 changes, the imaging position of the light spot on the photodetector shifts accordingly. Based on the light spot shift and optical system parameters, the system calculates the real-time distance between the rangefinder and the pipe wall. Combined with the pipe's circumferential rotation and the combined axial and circumferential motion of the laser rangefinder 6, it continuously collects distance data from multiple points on the pipe wall. The host computer of the laser rangefinder 6 processes the collected distance data, fits the pipe profile, and then calculates dimensional parameters such as the pipe's outer diameter, roundness, and ellipticity, completing the non-contact optical inspection of the pipe's dimensions. The main winding tube 16 and the auxiliary winding tube 17 should be made of semi-flexible materials with good pressure resistance to ensure their normal operation. Simultaneously, to ensure the main winding tube 16 and the auxiliary winding tube 17... The winding effect of the winding tube 16 and the auxiliary winding tube 17 on the main winding disk 12 and the auxiliary winding disk 13, respectively, can be achieved by installing two sets of auxiliary conveying structures on the guide frame 24. Each set of auxiliary conveying structures includes an upper rotating wheel 42 and a lower rotating wheel 43, and two auxiliary servo motors 44 are installed on the guide frame 24. The two auxiliary servo motors 44 drive the two lower rotating wheels 43 to rotate. The main winding tube 16 is set between one set of upper rotating wheels 42 and lower rotating wheels 43, and the auxiliary winding tube 17 is set between another set of upper rotating wheels 42 and lower rotating wheels 43. The auxiliary servo motors 44 drive the lower rotating wheels 43 to rotate, so as to achieve auxiliary conveying of the main winding tube 16 and the auxiliary winding tube 17 relative to the main winding disk 12 and the auxiliary winding disk 13, respectively, and ensure that the main winding tube 16 and the auxiliary winding tube 17 are smoothly received and unfolded relative to the main winding disk 12 and the auxiliary winding disk 13, respectively.

[0032] 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.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An optical dimension inspection device for CPVC pipe inspection, characterized in that, It includes a base (1), a detection body and a transfer body. A suspension bracket (2) is installed on the base (1). A suspension bracket (2) is fixedly connected to the suspension bracket (2). A first servo motor (3) is installed outside the base (1). The detection body includes a mounting frame (4), a rotating frame (5) is rotatably connected to the mounting frame (4), a laser rangefinder (6) is mounted on the rotating frame (5), and a second servo motor (7) is mounted on the mounting frame (4). The second servo motor (7) is used to drive the rotation of the rotating frame (5) relative to the mounting frame (4). The mounting frame (4) is mounted on the suspension adjustment device. The transfer body includes a first rotating shaft (8) and a second rotating shaft (9). Both the first rotating shaft (8) and the second rotating shaft (9) are rotatably connected to the base (1). Multiple first connecting arms (10) are fixedly connected to the first rotating shaft (8). The multiple first connecting arms (10) are used to receive the tube to be tested. Multiple second connecting arms (11) are fixedly connected to the second rotating shaft (9). The first servo motor (3) is used to drive the synchronous rotation of the first rotating shaft (8) and the second rotating shaft (9).

2. The optical dimension inspection device for CPVC pipe inspection according to claim 1, characterized in that: The suspension adjustment device includes a main winding disc (12), an auxiliary winding disc (13), a main servo motor (14), and an auxiliary servo motor (15). The main winding disc (12) and the auxiliary winding disc (13) are rotatably connected to the suspension bracket (2). The main servo motor (14) and the auxiliary servo motor (15) are both mounted on the suspension bracket (2). The main servo motor (14) and the auxiliary servo motor (15) are used to drive the rotation of the main winding disc (12) and the auxiliary winding disc (13), respectively. The main winding disc (12) and the auxiliary winding disc (13) are respectively equipped with a main winding tube (16) and an auxiliary winding tube (17). The mounting frame (4) has a central opening for the main winding tube (16) to pass through. The auxiliary winding tube (17) is fixedly connected to the mounting frame (4).

3. The optical dimension inspection device for CPVC pipe inspection according to claim 2, characterized in that: The front end of the main winding tube (16) is fixedly connected to an iron block (18), and a lifting frame (19) is slidably connected to the base (1). An end plate (20) is fixedly connected to the lifting frame (19), and a plurality of permanent magnets (21) are fixedly connected to the front end of the end plate (20). The iron block (18) matches the permanent magnets (21). An electric telescopic rod (22) is installed on the base (1). The electric telescopic rod (22) is used for adjusting and controlling the height of the lifting frame (19) relative to the base (1).

4. The optical dimension inspection device for CPVC pipe inspection according to claim 3, characterized in that: A horizontal support rod (23) is rotatably connected inside the suspension bracket (2). A guide frame (24) is fixedly connected to the horizontal support rod (23). A main guide hole (25) and an auxiliary guide hole (26) are provided inside the guide frame (24). The main winding tube (16) and the auxiliary winding tube (17) pass through the main guide hole (25) and the auxiliary guide hole (26) respectively. An external servo motor (27) is installed outside the suspension bracket (2). The output shaft of the external servo motor (27) is connected to the horizontal support rod (23) for transmission.

5. The optical dimension inspection device for CPVC pipe inspection according to claim 4, characterized in that: Two quick-connect pipes (28) are fixedly connected to the suspension bracket (2). Each of the two quick-connect pipes (28) is rotatably connected to a connecting pipe (29). The two quick-connect pipes (28) are respectively connected to the two connecting pipes (29). The two connecting pipes (29) are respectively fixedly connected to the main winding pipe (16) and the auxiliary winding pipe (17).

6. The optical dimension inspection device for CPVC pipe inspection according to claim 5, characterized in that: An inner support wheel (30) and an outer support wheel (31) are rotatably installed on the first connecting arm (10) and inside the second connecting arm (11). Each of the inner support wheels (30) is connected to a support belt (32). Each of the support belts (32) is connected to the outer support wheel (31). A variable frequency motor (33) is installed outside the first connecting arm (10) at the middle position. The variable frequency motor (33) is connected to the inner support wheel (30) inside the first connecting arm (10) at the middle position.

7. The optical dimension inspection device for CPVC pipe inspection according to claim 6, characterized in that: Each of the first connecting arms (10) is fixedly connected to an upper limit arc frame (34) and a lower limit arc frame (35). Each of the bases (1) is fixedly connected to a plurality of intermediate bars (36). Each of the intermediate bars (36) is provided with a limit facade (37) and a guide slope (38).

8. The optical dimension inspection device for CPVC pipe inspection according to claim 7, characterized in that: The first rotating shaft (8) and the second rotating shaft (9) are both fixedly connected with transmission gears (39), the two transmission gears (39) mesh with each other, and the output shaft of the first servo motor (3) is connected to the second rotating shaft (9) in a transmission connection.

9. The optical dimension inspection device for CPVC pipe inspection according to claim 8, characterized in that: The second servo motor (7), the main servo motor (14) and the auxiliary servo motor (15) are all equipped with drive gears (40), and the main winding disk (12), the auxiliary winding disk (13) and the rotating frame (5) are all fixedly connected with transmission gear rings (41). The three drive gears (40) mesh with the three transmission gear rings (41) respectively.

10. An optical dimension inspection method for CPVC pipe inspection, characterized in that, The optical dimensional inspection device for CPVC pipe inspection according to any one of claims 1-9 includes the following steps: S1. Place the CPVC pipe to be tested on the first connecting arm (10) and the second connecting arm (11) of the transfer body. Drive the first rotating shaft (8) and the second rotating shaft (9) to rotate synchronously through the first servo motor (3), thereby driving multiple first connecting arms (10) and multiple second connecting arms (11) to operate in conjunction, and adjust the CPVC pipe to be tested to the testing station to complete the alignment of the pipe. S2. The mounting frame (4) is constructed by using the suspension adjustment device and matching pipes to form the moving path. Then, the mounting frame (4) is moved to adjust its position so that the laser rangefinder (6) on the outside of the mounting frame (4) is positioned relative to the pipes. It is then adapted to different positions on the pipes for detection and positioning, and detection is performed. S3. During the detection process, the second servo motor (7) runs, driving the rotating frame (5) to rotate relative to the mounting frame (4), so that the laser rangefinder (6) can adjust the detection angle to enrich the detection orientation and angle of the pipe and form the detection point coverage. S4. After the size inspection of a single CPVC pipe is completed, the laser rangefinder (6) is turned off and the rotating frame (5) is rotated and reset relative to the mounting frame (4) by the second servo motor (7). The suspension adjustment device is then controlled to form a storage structure. Then, the first servo motor (3) is restarted to drive the first rotating shaft (8) and the second rotating shaft (9) to rotate synchronously. The inspected pipe is then rotated out of the inspection station by the second connecting arm (11). At the same time, the first connecting arm (10) will receive the next inspected pipe to achieve continuous transport between the previous inspected pipe and the next inspected pipe.

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