Arc welding piece welding detection device and detection process thereof

Abstract

This application relates to the field of arc welding inspection technology, specifically disclosing an arc welding inspection device and its inspection process, including a mounting platform, a placement seat on the mounting platform, a placement block on the placement seat, a fixed seat on the mounting platform, a telescopic cylinder fixedly mounted on the fixed seat, a fixing component on the telescopic end of the telescopic cylinder, a slide rail on the mounting platform, a sliding seat slidably mounted on the slide rail, a first upright plate and a second upright plate vertically mounted on the sliding seat, an outer wall inspection mechanism on the first upright plate and an inner wall inspection mechanism on the second upright plate. In this application, the outer wall inspection mechanism and the inner wall inspection mechanism mounted on the first upright plate and the second upright plate can simultaneously inspect the inner and outer wall welding of the tubular arc welding component. During inspection, there is no need to deliberately position the tubular arc welding component or rotate the tubular arc welding component to perform accurate welding bending degree inspection.

Description

Technical Field

[0001] This application relates to the field of arc welding inspection technology, and in particular to an arc welding inspection device and its inspection process. Background Technology

[0002] Arc welded components refer to connecting parts formed through electric arc welding. Tubular arc welded components are widely used in critical facilities such as oil and gas pipelines and pressure vessels. During the welding process, defects such as porosity, slag inclusions, and cracks are prone to occur in the weld area due to the influence of materials, processes, and environmental factors. These defects may propagate under service conditions, leading to leaks or fractures, seriously threatening life and property safety. Therefore, rigorous quality inspection of tubular arc welded components is crucial. This is not only a necessary means to ensure product safety and reliability but also an important feedback loop for optimizing welding processes and improving manufacturing quality.

[0003] In existing technologies, automated inspection of tubular arc welded components typically employs a dedicated inspection station. This device generally includes a mounting platform, a V-shaped support block for the workpiece, an axial clamping fixture driven by a cylinder, and a sensor carrier that moves along a guide rail. During inspection, a servo motor drives the carrier, causing the mounted laser vision sensor or eddy current probe to scan the outer wall weld. For inner wall inspection, an additional rod-shaped endoscope is required, inserted through the tube end.

[0004] Regarding the aforementioned technologies, existing technologies cannot simultaneously inspect the inner and outer walls of tubular arc welded components. Furthermore, when using laser vision sensors to detect the welding bend of two pipe sections, the placement of the pipe sections can affect their position. When the projected lengths of both pipe sections in the horizontal position are at their shortest, the laser vision sensor cannot determine whether the length directions of the two pipe sections are on the same straight line. To perform a comprehensive inspection of the weld position, the pipe sections need to be rotated. When the length directions of the two pipe sections are not on the same straight line, the laser vision sensor will have a large detection error. Therefore, improvements are needed. Summary of the Invention

[0005] To address the aforementioned problems, this application provides a welding inspection device for arc welded components and its inspection process.

[0006] This application provides a welding inspection device and inspection process for arc welded components, which adopts the following technical solution:

[0007] A welding inspection device for arc welded parts includes a mounting platform with a placement seat and a placement block on the placement seat. A tubular arc welded part is placed on the placement block. A fixing seat is also provided on the mounting platform, and a telescopic cylinder is fixedly mounted on the fixing seat. A fixing component for fixing the tubular arc welded part placed on the placement block is provided on the telescopic end of the telescopic cylinder. A slide rail is provided on the mounting platform, and a sliding seat is slidably mounted on the slide rail. A first upright plate and a second upright plate are vertically mounted on the sliding seat. An outer wall inspection mechanism for inspecting the welding quality of the outer wall of the tubular arc welded part is provided on the first upright plate, and an inner wall inspection mechanism for inspecting the welding quality of the inner wall of the tubular arc welded part is provided on the second upright plate.

[0008] By adopting the above technical solution, the tubular arc welded part is placed on the placement block, and the telescopic end of the telescopic cylinder is fixed to the tubular arc welded part through the fixing component. When the sliding seat moves on the slide rail, the outer wall detection mechanism and the inner wall detection mechanism respectively set on the first and second upright plates in this application can realize the synchronous detection of the welding quality of the inner and outer walls of the tubular arc welded part. Compared with the prior art, the detection efficiency and comprehensiveness are improved. When the outer wall detection mechanism and the inner wall detection mechanism in this application detect the tubular arc welded part, there is no need to deliberately place the tubular arc welded part, and there is no need to rotate the tubular arc welded part to perform accurate welding bending degree detection.

[0009] Optionally, the fixing assembly includes a first rotating shaft, a rotating arm, a lower pressure bar, and a lower pressure block. The first rotating shaft is rotatably mounted on the fixing base, and a toothed ring is fixedly sleeved on the first rotating shaft. A rack is fixedly mounted on the telescopic end of the telescopic cylinder. The toothed ring and the rack mesh with each other. The telescopic end of the telescopic cylinder extends and retracts, driving the first rotating shaft to rotate. The rotating arm is fixedly mounted at both ends of the first rotating shaft. The lower pressure bar is fixedly mounted at the end of the rotating arm away from the rotating shaft. Two sets of lower pressure blocks are provided, and the two sets of lower pressure blocks are arranged at both ends of the lower pressure bar along the length direction of the lower pressure bar. The rotation of the rotating arm drives the lower pressure blocks to press down on the tubular arc welded workpiece, thereby clamping and fixing the tubular arc welded workpiece in conjunction with the placement block.

[0010] By adopting the above technical solution, the telescopic end of the telescopic cylinder drives the rack to move. The rack meshes with the toothed ring to rotate the first rotating shaft. The rotating arm is fixed at both ends of the first rotating shaft. The lower pressure bar is connected to the rotating arm, and the lower pressure block is set at both ends of the lower pressure bar. Therefore, the rotation of the rotating arm can drive the lower pressure block to press down. In conjunction with the placement block, the tubular arc welded part is clamped. The transmission of the toothed ring and the rack converts the linear motion of the telescopic cylinder into rotational motion, realizing the smooth pressing down of the lower pressure block and avoiding impact damage to the workpiece.

[0011] Optionally, the placement base is further provided with a fixing block, a second rotating shaft is provided on the fixing block, an abutment plate is rotatably mounted on the second rotating shaft, a pressure sensor is fixedly mounted on the fixing block, the pressure sensor is located on the side of the second rotating shaft away from the telescopic cylinder, a first elastic element is vertically arranged between the pressure sensor and the second rotating shaft, one end of the first elastic element abuts against the abutment plate, and the other end of the first elastic element is fixedly mounted inside the fixing block. When the tubular arc welded part is placed on the placement block, the end of the abutment plate near the telescopic cylinder abuts against the tubular arc welded part, and the end of the abutment plate away from the telescopic cylinder abuts against the pressure sensor. When the tubular arc welded part is separated from the placement block, the first elastic element causes the abutment plate to rotate and reset.

[0012] By adopting the above technical solution, when the tubular arc welded workpiece is placed, one end of the abutment plate abuts against the workpiece, and the other end abuts against the pressure sensor. When the workpiece is separated, the first elastic element resets the abutment plate, and the pressure sensor separates from the abutment plate. Therefore, the pressure sensor can detect in real time whether the workpiece is placed in place, ensuring accurate positioning before detection and avoiding false detections or missed detections. The abutment plate also provides auxiliary support, enhancing the stability of the workpiece. The pressure signal can also be integrated into the control system to achieve intelligent monitoring, reducing manual intervention and the risk of operational errors. Furthermore, by using the rotation of the abutment plate to generate pressure values ​​for the pressure sensor, indirect contact between the tubular arc welded workpiece and the pressure sensor is achieved, avoiding damage to the pressure sensor caused by the high residual heat carried by the tubular arc welded workpiece after welding.

[0013] Optionally, the outer wall detection mechanism includes a rotating ring, multiple sets of first detection components, and a first drive component. The rotating ring is rotatably mounted on the first upright plate. The multiple sets of first detection components are all disposed on the inner wall of the rotating ring. Each first detection component includes a connecting post, a receiving rod, a contact head, a first electromagnet, a second electromagnet, a second elastic element, and a piezoelectric ceramic. An installation groove is formed on the inner wall of the rotating ring. The connecting post is partially inserted into the installation groove. The contact head is fixedly disposed at the end of the connecting post located outside the installation groove. The first electromagnet is fixedly disposed at the end of the connecting post located inside the installation groove. The first electromagnet is located in the mounting groove, with one end connected to the connecting post. The second electromagnet is located at the end of the first electromagnet away from the connecting post. The second elastic element is located between the first electromagnet and the second electromagnet. The piezoelectric ceramic is fixedly located in the mounting groove and on the side of the second electromagnet away from the first electromagnet. When inspecting the tubular arc welded part, neither the first electromagnet nor the second electromagnet is energized. The first driving assembly is located on the sliding seat and the first upright plate, and is used to drive the sliding seat to move and the rotating ring to rotate.

[0014] By adopting the above technical solution, the first and second electromagnets are de-energized. Under the action of the second elastic element, the contact head contacts the outer wall of the tubular arc welded part. When it contacts the cracks and protrusions on the surface of the outer wall of the tubular arc welded part, the contact head will squeeze the piezoelectric ceramic through the second elastic element. The piezoelectric ceramic converts the pressure change into an electrical signal. The first driving component drives the sliding seat to move and the rotating ring to rotate. The rotation of the rotating ring causes multiple contact heads to continuously scan the outer wall of the tubular arc welded part, realizing comprehensive detection. In this way, the outer wall of the tubular arc welded part can be modeled according to the continuous output of the electrical signal, and the condition of the outer wall itself and the welding condition can be detected more intuitively. Furthermore, the size of the electrical signal output and the modeling of the electrical signal can be used to directly determine whether the tubular arc welded part has uneven welding.

[0015] Optionally, the inner wall detection mechanism includes a rotating rod, multiple sets of second detection components, and a second driving component. The rotating rod is rotatably mounted on the second upright plate, and the end of the rotating rod near the rotating ring is located inside the rotating ring. Multiple sets of second detection components are all mounted on the outer peripheral wall of the rotating rod. The second detection components are mounted on the same side as the first detection components. The second driving component is mounted on the second upright plate and is used to drive the rotating rod to rotate when the sliding seat moves.

[0016] By adopting the above technical solution, multiple sets of second detection components are set on the outer peripheral wall of the rotating rod. The second detection components are set with the first detection components. When the sliding seat moves, the second drive component drives the rotating rod to rotate. The rotation of the rotating rod enables the second detection components to scan the inner wall of the tubular arc welded part, realizing synchronous detection of the inner and outer walls, which improves efficiency. Furthermore, the inner wall of the tubular arc welded part can be modeled based on the electrical signal output by the piezoelectric ceramic in the second detection component, thereby realizing a comprehensive model of the tubular arc welded part. This allows for the detection of the condition of the inner wall of the tubular arc welded part and the welding condition. At the same time, it can also be combined with the electrical signal output by the first detection component to further improve the accuracy of judging whether there is uneven welding in the tubular arc welded part. In addition, when the wall thickness of the tubular arc welded part is inconsistent, the detection and modeling of the tubular arc welded part can still be realized through the output of electrical signals.

[0017] Optionally, the first drive assembly includes a first drive motor, a moving gear, a moving rack, a second drive motor, a connecting rod, a first driving gear, and a first driven gear ring. The first drive motor is fixedly mounted on the sliding seat, and its output shaft passes through the sliding seat. The moving gear is fixedly mounted on the output shaft of the first drive motor. The moving rack is fixedly mounted on the mounting platform, and the moving gear and the moving rack mesh with each other. The second drive motor is fixedly mounted on the sliding seat. The connecting rod is fixedly mounted on the output shaft of the second drive motor parallel to the length direction of the sliding seat. The first driving gear is fixedly sleeved on the end of the connecting rod away from the second drive motor. The first driven gear ring is fixedly sleeved on the outer peripheral wall of the rotating ring, and the first driving gear and the first driven gear ring mesh with each other.

[0018] By adopting the above technical solution, the first drive motor is fixed on the sliding seat, and its output shaft drives the moving gear and the moving rack to mesh, causing the sliding seat to move. The second drive motor is fixed on the sliding seat, and the connecting rod is fixed to the output shaft of the second drive motor. The first driving gear is fixed to the end of the connecting rod and meshes with the first driven gear ring to drive the rotating ring to rotate. The meshing of the moving gear and the moving rack realizes the horizontal movement of the sliding seat; the meshing of the first driving gear and the first driven gear ring drives the rotating ring to rotate, thereby realizing comprehensive inspection of the outer wall of the tubular arc welded part.

[0019] Optionally, the second drive assembly includes a second drive gear and a second driven gear ring. The second drive gear is fixedly sleeved on the end of the connecting rod near the second drive motor, and the second driven gear ring is fixedly sleeved on the end of the rotating rod near the second drive motor. The second drive gear and the second driven gear ring mesh with each other.

[0020] By adopting the above technical solution, the second driving gear is fixed to the end of the connecting rod near the second drive motor, and meshes with the second driven gear ring to drive the rotating rod to rotate. Using the same connecting drive ring and rotating rod ensures the synchronous rotation of the inner and outer wall detection mechanisms, improving detection consistency.

[0021] Optionally, the rotating ring is provided with multiple sets of high-pressure nozzles on the side away from the second drive motor, and the rotating rod is provided with an umbrella-shaped nozzle at the end away from the second drive motor.

[0022] By adopting the above technical solution, multiple sets of high-pressure nozzles are arranged on the side of the rotating ring away from the second drive motor, and umbrella-shaped nozzles are arranged at the end of the rotating rod away from the second drive motor. During rotation, the high-pressure nozzles spray fluid to clean the outer wall of the workpiece, remove impurities, and cool it down, thereby improving the detection accuracy of the outer wall; the umbrella-shaped nozzles cover the inner wall area of ​​the workpiece for cleaning and cooling, further preventing overheating from affecting the detection and improving the detection accuracy of the inner wall.

[0023] Optionally, multiple sets of the first detection components are arranged at intervals along the length direction of the rotating ring and the circumferential direction of the inner wall of the rotating ring, and multiple sets of the second detection components are arranged at intervals along the length direction of the rotating rod and the circumferential direction of the side wall of the rotating rod.

[0024] By adopting the above technical solution, multiple sets of first and second detection components, spaced apart, cover a larger area of ​​the workpiece, improving detection efficiency and resolution. The circumferential distribution ensures comprehensive scanning and avoids missed detections; the individual detection components do not interfere with each other, resulting in more accurate data acquisition; it adapts to different workpiece shapes and sizes, offering strong versatility; furthermore, it reduces detection time and improves production efficiency.

[0025] This application also includes a welding inspection process for arc welded parts, comprising the following steps:

[0026] S1: Place the tubular arc welded part on the placement block, and make the tubular arc welded part pass through the rotating ring, and make the end of the rotating rod inside the tubular arc welded part, and ensure that the tubular arc welded part abuts against the abutting plate. At this time, the end of the abutting plate away from the telescopic cylinder abuts against the pressure sensor. The pressure sensor detects a signal, indicating that the tubular arc welded part is placed in place.

[0027] S2: Activate the telescopic cylinder to rotate the first rotating shaft, which drives the pressure block on the rotating arm to press down, and cooperates with the placement block to clamp and fix the tubular arc welded part;

[0028] S3: Start the first drive motor to move the sliding seat along the slide rail, and start the second drive motor to drive the rotating ring and rotating rod to rotate synchronously.

[0029] S4: During the rotation of the rotating ring and rotating rod, the contact head of the first detection component contacts the outer wall of the tubular arc welded part, and the contact head of the second detection component contacts the inner wall of the tubular arc welded part; the first electromagnet and the second electromagnet in the first and second detection components are not energized, and the electrical signal generated by the pressure change of the contact head is detected by the second elastic element and piezoelectric ceramic to evaluate the welding quality; at the same time, the high-pressure nozzle on the rotating ring and the umbrella-shaped nozzle at the end of the rotating rod can be used for auxiliary cleaning or cooling;

[0030] S5: After the test is completed, stop the first drive motor and the second drive motor to stop the rotating ring and the rotating rod from rotating. The first electromagnet and the second electromagnet are energized to separate the contact head from the tubular arc welded part. Then, control the telescopic cylinder to reset and release the tubular arc welded part. Finally, take out the tubular arc welded part.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. When the tubular arc welded workpiece is placed, one end of the abutment plate abuts against the workpiece, and the other end abuts against the pressure sensor. When the workpiece is separated, the first elastic element resets the abutment plate, and the pressure sensor separates from the abutment plate. Therefore, the pressure sensor can detect in real time whether the workpiece is placed in the correct position, ensuring accurate positioning before detection and avoiding false or missed detections. The abutment plate also provides auxiliary support, enhancing workpiece stability. The pressure signal can also be integrated into the control system to achieve intelligent monitoring, reducing manual intervention and the risk of operational errors. Furthermore, by using the rotation of the abutment plate to generate pressure values ​​for the pressure sensor, indirect contact between the tubular arc welded workpiece and the pressure sensor is achieved, avoiding damage to the pressure sensor caused by the high residual heat carried by the tubular arc welded workpiece after welding.

[0033] 2. When the first and second electromagnets are de-energized, the contact head contacts the outer wall of the tubular arc welded part under the action of the second elastic element. When it contacts the cracks and protrusions on the outer wall surface of the tubular arc welded part, the contact head will squeeze the piezoelectric ceramic through the second elastic element. The piezoelectric ceramic converts the pressure change into an electrical signal. The first drive component drives the sliding seat to move and the rotating ring to rotate. The rotation of the rotating ring causes multiple contact heads to continuously scan the outer wall of the tubular arc welded part, realizing comprehensive detection. This allows for modeling of the outer wall of the tubular arc welded part based on the continuous output of electrical signals, enabling more intuitive detection of the condition of the outer wall itself and the welding condition. Furthermore, it allows for direct judgment of whether the tubular arc welded part has uneven welding based on the magnitude change of the electrical signal output and the modeling of the electrical signal.

[0034] 3. Multiple sets of second detection components are set on the outer peripheral wall of the rotating rod. The second detection components are set in the same way as the first detection components. When the sliding seat moves, the second drive component drives the rotating rod to rotate. The rotation of the rotating rod can enable the second detection components to scan the inner wall of the tubular arc welded part, realize the synchronous detection of the inner and outer walls, improve efficiency, and can also model the inner wall of the tubular arc welded part according to the electrical signal output by the piezoelectric ceramic in the second detection component. This enables comprehensive modeling of the tubular arc welded part, and realizes the detection of the condition of the inner wall of the tubular arc welded part and the welding condition. At the same time, it can also be used in conjunction with the electrical signal output by the first detection component to further improve the accuracy of judging whether there is uneven welding in the tubular arc welded part. In addition, when the wall thickness of the tubular arc welded part is inconsistent, the detection and modeling of the tubular arc welded part can still be realized through the output of electrical signals.

[0035] 4. Multiple sets of high-pressure nozzles are installed on the side of the rotating ring away from the second drive motor, and umbrella-shaped nozzles are installed at the end of the rotating rod away from the second drive motor. During rotation, the high-pressure nozzles spray fluid to clean the outer wall of the workpiece, remove impurities, and cool it down, thereby improving the accuracy of the outer wall detection. The umbrella-shaped nozzles cover the inner wall area of ​​the workpiece for cleaning and cooling, further preventing overheating from affecting the detection and improving the accuracy of the inner wall detection.

[0036] 5. Multiple sets of first and second detection components, spaced apart, cover a larger area of ​​the workpiece, improving detection efficiency and resolution. Circumferential distribution ensures comprehensive scanning and avoids missed detections; the various detection components do not interfere with each other, resulting in more accurate data acquisition; it adapts to different workpiece shapes and sizes, offering strong versatility; furthermore, it reduces detection time and improves production efficiency. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0039] Figure 2 yes Figure 1 Another perspective;

[0040] Figure 3 yes Figure 2 Another perspective;

[0041] Figure 4 yes Figure 1 Partial structural diagram;

[0042] Figure 5 yes Figure 1 A schematic diagram of the cross-sectional structure;

[0043] Figure 6 This is a cross-sectional structural diagram of the fixed block.

[0044] Reference numerals: 1. Mounting platform; 11. Placement seat; 12. Placement block; 13. Fixing seat; 14. Telescopic cylinder; 15. Slide rail; 16. Sliding seat; 17. First upright plate; 18. Second upright plate; 2. Fixing assembly; 21. First rotating shaft; 22. Rotating arm; 23. Lower pressure bar; 24. Lower pressure block; 3. Outer wall detection mechanism; 31. Rotating ring; 311. High-pressure nozzle; 32. First detection assembly; 321. Connecting column; 322. Socket rod; 323. Contact head; 324. First electromagnet; 325. Second electromagnet; 326. 327. Second elastic element; 33. Piezoelectric ceramic; 33. First drive assembly; 331. First drive motor; 332. Moving gear; 333. Moving rack; 334. Second drive motor; 335. Connecting rod; 336. First driven gear ring; 4. Inner wall detection mechanism; 41. Rotating rod; 441. Umbrella-shaped nozzle; 42. Second detection assembly; 43. Second drive assembly; 431. Second drive gear; 432. Second driven gear ring; 5. Fixed block; 6. Second rotating shaft; 7. Abutment plate; 8. Pressure sensor; 9. First elastic element. Detailed Implementation

[0045] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0046] This application discloses a welding inspection device and its inspection process for arc welded parts, referring to... Figure 1 , Figure 2 and Figure 3 A welding inspection device for arc welded parts includes a mounting platform 1, a placement seat 11 on the mounting platform 1, a placement block 12 on the placement seat 11, a tubular arc welded part placed on the placement block 12, a fixing seat 13 bolted to the mounting platform 1, a telescopic cylinder 14 bolted to the fixing seat 13, a fixing component 2 for fixing the tubular arc welded part placed on the placement block 12 on the telescopic end of the telescopic cylinder 14, a slide rail 15 bolted to the mounting platform 1, a sliding seat 16 slidably mounted on the slide rail 15, a first upright plate 17 and a second upright plate 18 vertically bolted to the sliding seat 16, an outer wall inspection mechanism 3 on the first upright plate 17, and an inner wall inspection mechanism 4 on the second upright plate 18.

[0047] The tubular arc welded part is placed on the placement block 12. The telescopic end of the telescopic cylinder 14 is fixed to the tubular arc welded part by the fixing component 2. When the sliding seat 16 moves on the slide rail 15, the outer wall detection mechanism 3 and the inner wall detection mechanism 4 respectively set on the first upright plate 17 and the second upright plate 18 in this application can realize the synchronous detection of the welding quality of the inner and outer walls of the tubular arc welded part. Compared with the prior art, the detection efficiency and comprehensiveness are improved. When the outer wall detection mechanism 3 and the inner wall detection mechanism 4 in this application detect the tubular arc welded part, there is no need to deliberately place the tubular arc welded part, and there is no need to rotate the tubular arc welded part to perform accurate welding bending degree detection.

[0048] Reference Figure 1 , Figure 2 and Figure 3 In this embodiment, the fixing component 2 includes a first rotating shaft 21, a rotating arm 22, a lower pressure bar 23, and a lower pressure block 24. The first rotating shaft 21 is rotatably mounted on the fixing base 13. A toothed ring is welded onto the first rotating shaft 21. A rack is fixedly welded to the telescopic end of the telescopic cylinder 14. The toothed ring and the rack mesh with each other. The telescopic end of the telescopic cylinder 14 extends and retracts, causing the first rotating shaft 21 to rotate. The rotating arm 22 is fixedly mounted at both ends of the first rotating shaft 21. The lower pressure bar 23 is bolted to the end of the rotating arm 22 away from the rotating shaft. Two sets of lower pressure blocks 24 are provided. The two sets of lower pressure blocks 24 are bolted to both ends of the lower pressure bar 23 along the length direction of the lower pressure bar 23. The rotating arm 22 rotates, causing the lower pressure blocks 24 to press down on the tubular arc welded workpiece. Together with the placement block 12, the tubular arc welded workpiece is clamped and fixed.

[0049] The telescopic end of the telescopic cylinder 14 drives the rack to move. The rack meshes with the gear ring to rotate the first rotating shaft 21. The rotating arm 22 is fixed at both ends of the first rotating shaft 21. The lower pressure bar 23 is connected to the rotating arm 22. The lower pressure block 24 is set at both ends of the lower pressure bar 23. Therefore, the rotation of the rotating arm 22 can drive the lower pressure block 24 to press down. In conjunction with the placement block 12, it clamps the tubular arc welded part. The transmission of the gear ring and the rack converts the linear motion of the telescopic cylinder 14 into rotational motion, realizing the smooth pressing down of the lower pressure block 24 and avoiding impact damage to the workpiece.

[0050] Reference Figure 2 and Figure 6In this embodiment, a fixing block 5 is bolted to the placement base 11, a second rotating shaft 6 is fixedly installed on the fixing block 5, an abutment plate 7 is rotatably installed on the second rotating shaft 6, a pressure sensor 8 is fixedly installed on the fixing block 5, the pressure sensor 8 is installed on the side of the second rotating shaft 6 away from the telescopic cylinder 14, a first elastic member 9 is vertically installed between the pressure sensor 8 and the second rotating shaft 6, one end of the first elastic member 9 abuts against the abutment plate 7, and the other end of the first elastic member 9 is fixedly set in the fixing block 5. When the tubular arc welded part is placed on the placement block 12, the end of the abutment plate 7 near the telescopic cylinder 14 abuts against the tubular arc welded part, and the end of the abutment plate 7 away from the telescopic cylinder 14 abuts against the pressure sensor 8. When the tubular arc welded part is separated from the placement block 12, the first elastic member 9 causes the abutment plate 7 to rotate and reset.

[0051] When the tubular arc welded part is placed, one end of the abutment plate 7 abuts against the workpiece, and the other end abuts against the pressure sensor 8. When the workpiece is separated, the first elastic element 9 resets the abutment plate 7, and the pressure sensor 8 separates from the abutment plate 7. Therefore, the pressure sensor 8 can detect in real time whether the workpiece is placed in place, ensuring accurate positioning before detection and avoiding false detection or missed detection. The abutment plate 7 also provides auxiliary support, enhancing the stability of the workpiece. The pressure signal can also be integrated into the control system to achieve intelligent monitoring, reduce manual intervention, and lower the risk of operational errors. Furthermore, by using the rotation of the abutment plate 7 to generate pressure values ​​on the pressure sensor 8, indirect contact between the tubular arc welded part and the pressure sensor 8 is achieved, avoiding damage to the pressure sensor 8 caused by the high residual heat carried by the tubular arc welded part after welding. In this embodiment, the first elastic element 9 is a spring, which is a preferred embodiment. In other embodiments, the first elastic element 9 can be an elastic rubber column, etc.

[0052] Reference Figure 3 , Figure 4 and Figure 5In this embodiment, the outer wall detection mechanism 3 includes a rotating ring 31, multiple sets of first detection components 32, and a first drive component 33. The rotating ring 31 is rotatably mounted on the first upright plate 17. The multiple sets of first detection components 32 are all disposed on the inner wall of the rotating ring 31. The first detection component 32 includes a connecting post 321, a socket rod 322, a contact head 323, a first electromagnet 324, a second electromagnet 325, a second elastic element 326, and a piezoelectric ceramic 327. An installation groove is provided on the inner wall of the rotating ring 31. The connecting post 321 is partially inserted into the installation groove. The contact head 323 is fixedly welded to the end of the connecting post 321 located outside the installation groove. The first electromagnet 324 is fixedly installed on the connecting post 321. The end of the column 321 is located in the mounting groove. The socket rod 322 is set in the mounting groove and one end is socketed to the connecting column 321. The second electromagnet 325 is installed at the end of the socket rod 322 away from the connecting column 321. The second elastic element 326 is set between the first electromagnet 324 and the second electromagnet 325. The piezoelectric ceramic 327 is fixedly installed in the mounting groove and is located on the side of the second electromagnet 325 away from the first electromagnet 324. When the tubular arc welded part is inspected, neither the first electromagnet 324 nor the second electromagnet 325 is energized. The first drive assembly 33 is set on the sliding seat 16 and the first upright plate 17 and is used to drive the sliding seat 16 to move and the rotating ring 31 to rotate.

[0053] When the first electromagnet 324 and the second electromagnet 325 are de-energized, the contact head 323 contacts the outer wall of the tubular arc welded component under the action of the second elastic element 326. When it contacts the cracks and protrusions on the surface of the outer wall of the tubular arc welded component, the contact head 323 will squeeze the piezoelectric ceramic 327 through the second elastic element 326. The piezoelectric ceramic 327 converts the pressure change into an electrical signal. The first driving component 33 drives the sliding seat 16 to move and the rotating ring 31 to rotate. The rotation of the rotating ring 31 causes multiple contact heads 323 to continuously scan the outer wall of the tubular arc welded component, realizing comprehensive detection. This allows for modeling of the outer wall of the tubular arc welded component based on the continuous output of electrical signals, enabling more intuitive detection of the condition of the outer wall itself and the welding condition. Furthermore, it allows for direct judgment of whether the tubular arc welded component has uneven welding based on the magnitude change of the electrical signal output and the modeling of the electrical signal. In this embodiment, the second elastic element 326 is a spring, which is a preferred embodiment. In other embodiments, the second elastic element 326 can be an elastic rubber column, etc.

[0054] Reference Figure 3 , Figure 4 and Figure 5In this embodiment, the inner wall detection mechanism 4 includes a rotating rod 41, multiple sets of second detection components 42, and a second drive component 43. The rotating rod 41 is rotatably mounted on the second upright plate 18, and the end of the rotating rod 41 near the rotating ring 31 is located inside the rotating ring 31. Multiple sets of second detection components 42 are all mounted on the outer peripheral wall of the rotating rod 41. The second detection components 42 are set with the first detection components 32. The second drive component 43 is mounted on the second upright plate 18 and is used to drive the rotating rod 41 to rotate when the sliding seat 16 moves.

[0055] Multiple sets of second detection components 42 are disposed on the outer peripheral wall of the rotating rod 41. The second detection components 42 are disposed in the same manner as the first detection components 32. The second drive component 43 drives the rotating rod 41 to rotate when the sliding seat 16 moves. The rotation of the rotating rod 41 enables the second detection components 42 to scan the inner wall of the tubular arc welded part, realizing synchronous detection of the inner and outer walls, which improves efficiency. Furthermore, the inner wall of the tubular arc welded part can be modeled based on the electrical signal output by the piezoelectric ceramic 327 in the second detection component 42, thereby realizing comprehensive modeling of the tubular arc welded part. This allows for the detection of the condition of the inner wall of the tubular arc welded part and the welding condition. At the same time, it can also be used in conjunction with the electrical signal output by the first detection component 32 to further improve the accuracy of judging whether there is uneven welding in the tubular arc welded part. In addition, when the wall thickness of the tubular arc welded part is inconsistent, the detection and modeling of the tubular arc welded part can still be realized through the output of electrical signals.

[0056] Reference Figure 3 , Figure 4 and Figure 5 The first drive assembly 33 includes a first drive motor 331, a moving gear 332, a moving rack 333, a second drive motor 334, a connecting rod 335, a first driving gear, and a first driven gear ring 336. The first drive motor 331 is bolted to the sliding seat 16, and its output shaft passes through the sliding seat 16. The moving gear 332 is welded to the output shaft of the first drive motor 331. The moving rack 333 is fixed to the mounting platform 1, and the moving gear 332 and the moving rack 333 mesh with each other. The second drive motor 334 is bolted to the sliding seat 16. The connecting rod 335 is fixedly arranged on the output shaft of the second drive motor 334 parallel to the length direction of the sliding seat 16. The first driving gear is fixedly sleeved on the end of the connecting rod 335 away from the second drive motor 334. The first driven gear ring 336 is fixedly sleeved on the outer peripheral wall of the rotating ring 31, and the first driving gear and the first driven gear ring 336 mesh with each other.

[0057] The first drive motor 331 is fixed to the sliding seat 16. Its output shaft drives the moving gear 332 to mesh with the moving rack 333, causing the sliding seat 16 to move. The second drive motor 334 is fixed to the sliding seat 16. The connecting rod 335 is fixed to the output shaft of the second drive motor 334. The first driving gear is fixed to the end of the connecting rod 335 and meshes with the first driven gear ring 336, causing the rotating ring 31 to rotate. The meshing of the moving gear 332 and the moving rack 333 enables the horizontal movement of the sliding seat 16; the meshing of the first driving gear and the first driven gear ring 336 drives the rotating ring 31 to rotate, thereby achieving comprehensive inspection of the outer wall of the tubular arc welded part.

[0058] Reference Figure 3 , Figure 4 and Figure 5 The second drive assembly 43 includes a second driving gear 431 and a second driven gear ring 432. The second driving gear 431 is fixedly sleeved on the end of the connecting rod 335 near the second drive motor 334, and the second driven gear ring 432 is fixedly sleeved on the end of the rotating rod 41 near the second drive motor 334. The second driving gear 431 and the second driven gear ring 432 mesh with each other. The second driving gear 431, fixed to the end of the connecting rod 335 near the second drive motor 334, meshes with the second driven gear ring 432 to drive the rotating rod 41 to rotate. Using the same connecting drive ring 31 and rotating rod 41 ensures the synchronous rotation of the inner and outer wall detection mechanism 3, improving detection consistency.

[0059] Multiple sets of high-pressure nozzles 311 are arranged on the side of the rotating ring 31 away from the second drive motor 334, and an umbrella-shaped nozzle 441 is arranged at the end of the rotating rod 41 away from the second drive motor 334. During rotation, the high-pressure nozzles 331 spray fluid to clean the outer wall of the workpiece, remove impurities, and cool it, improving the accuracy of outer wall detection. The umbrella-shaped nozzles 441 cover the inner wall area of ​​the workpiece for cleaning and cooling, further preventing overheating from affecting detection and improving the accuracy of inner wall detection.

[0060] Reference Figure 4 and Figure 5 Multiple sets of first detection components 32 are spaced apart along the length of the rotating ring 31 and circumferentially along its inner wall. Multiple sets of second detection components 42 are spaced apart along the length of the rotating rod 41 and circumferentially along its side wall. The spaced-apart first and second detection components 32 cover a larger area of ​​the workpiece, improving detection efficiency and resolution. The circumferential distribution ensures comprehensive scanning and avoids missed detections; the individual detection components do not interfere with each other, resulting in more accurate data acquisition; it adapts to different workpiece shapes and sizes, offering strong versatility; furthermore, it reduces detection time and improves production efficiency.

[0061] The implementation principle of the arc welded component welding inspection device and its inspection process in this application embodiment is as follows:

[0062] When the tubular arc welded component needs to be inspected, it is placed on the placement block 12, ensuring that it abuts against the contact plate 7. The pressure sensor 8 detects a signal, indicating that the tubular arc welded component is in place. The telescopic cylinder 14 is activated to drive the lowering block 24 on the rotating arm 22 to press down, which, together with the placement block 12, clamps and fixes the tubular arc welded component, and de-energizes both the first electromagnet 324 and the second electromagnet. The first drive motor 331 is activated to move the sliding seat 16 along the slide rail 15, and the second drive motor 334 is activated to drive the rotating ring 31 and the rotating rod 41 to rotate synchronously. At this time, the contact head 323 moves and makes full contact with the outer wall and inner wall of the tubular arc welded component, respectively. The electrical signal generated by the pressure change of the contact head 323 is detected by the second elastic element 326 and the piezoelectric ceramic 327, thereby evaluating the welding quality.

[0063] This embodiment also includes a welding inspection process for arc welded parts, comprising the following steps:

[0064] S1: Place the tubular arc welded part on the placement block 12, and make the tubular arc welded part pass through the rotating ring 31, and make the end of the rotating rod 41 inside the tubular arc welded part, and ensure that the tubular arc welded part abuts against the abutting plate 7. At this time, the end of the abutting plate 7 away from the telescopic cylinder 14 abuts against the pressure sensor 8. The pressure sensor 8 detects a signal, indicating that the tubular arc welded part is placed in place.

[0065] S2: Start the telescopic cylinder 14 to rotate the first rotating shaft 21, which drives the pressing block 24 on the rotating arm 22 to press down, and cooperates with the placement block 12 to clamp and fix the tubular arc welded part.

[0066] S3: Start the first drive motor 331 to move the sliding seat 16 along the slide rail 15, and start the second drive motor 334 to drive the rotating ring 31 and the rotating rod 41 to rotate synchronously.

[0067] S4: During the rotation of the rotating ring 31 and the rotating rod 41, the contact head 323 of the first detection component 32 contacts the outer wall of the tubular arc welded part, and the contact head 323 of the second detection component 42 contacts the inner wall of the tubular arc welded part; the first electromagnet 324 and the second electromagnet in the first detection component 32 and the second detection component 42 are not energized, and the electrical signal generated by the pressure change of the contact head 323 is detected by the second elastic element 326 and the piezoelectric ceramic 327, thereby evaluating the welding quality; at the same time, the high-pressure nozzle 311 on the rotating ring 31 and the umbrella-shaped nozzle 441 at the end of the rotating rod 41 can be used for auxiliary cleaning or cooling;

[0068] S5: After the test is completed, stop the first drive motor 331 and the second drive motor 334 to stop the rotation of the rotating ring 31 and the rotating rod 41. The first electromagnet 324 and the second electromagnet 325 are energized to separate the contact head 323 from the tubular arc welded part. Then control the telescopic cylinder 14 to reset and release the tubular arc welded part. Finally, the tubular arc welded part can be taken out.

[0069] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar words used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "a" or "an," and similar words do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising," "including," and similar words mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, but do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0070] The above are all optional embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An apparatus for detecting welding of arc welding pieces, comprising a mounting table (1), characterized in that: The mounting platform (1) is provided with a placement seat (11), and a placement block (12) is provided on the placement seat (11). The tubular arc welded part is placed on the placement block (12). The mounting platform (1) is also provided with a fixing seat (13). A telescopic cylinder (14) is fixedly provided on the fixing seat (13). A fixing component (2) for fixing the tubular arc welded part placed on the placement block (12) is provided on the telescopic end of the telescopic cylinder (14). A slide rail (15) is provided on the mounting platform (1). A sliding seat (16) is slidably provided on the slide rail (15). A first upright plate (17) and a second upright plate (18) are vertically provided on the sliding seat (16). An outer wall inspection mechanism (3) for inspecting the welding quality of the outer wall of the tubular arc welded part is provided on the first upright plate (17). An inner wall inspection mechanism (4) for synchronously inspecting the welding quality of the inner wall of the tubular arc welded part is provided on the second upright plate (18). The outer wall detection mechanism (3) includes a rotating ring (31), multiple sets of first detection components (32) and a first drive component (33). The rotating ring (31) is rotatably mounted on the first upright plate (17). The multiple sets of first detection components (32) are all mounted on the inner wall of the rotating ring (31). The first detection component (32) includes a connecting post (321), a socket rod (322), a contact head (323), a first electromagnet (324), a second electromagnet (325), a second elastic element (326), and a piezoelectric ceramic (327). An installation groove is provided on the inner wall of the rotating ring (31). The connecting post (321) is partially inserted into the installation groove. The contact head (323) is fixedly mounted at the end of the connecting post (321) located outside the installation groove. The first electromagnet (324) is fixedly mounted at the end of the connecting post (321) located outside the installation groove. At the end of the mounting groove, the socket rod (322) is disposed in the mounting groove and one end is socketed and connected to the connecting post (321). The second electromagnet (325) is disposed at the end of the socket rod (322) away from the connecting post (321). The second elastic element (326) is disposed between the first electromagnet (324) and the second electromagnet (325). The piezoelectric ceramic (327) is fixedly disposed in the mounting groove and located on the side of the second electromagnet (325) away from the first electromagnet (324). When the tubular arc welded part is inspected, neither the first electromagnet (324) nor the second electromagnet (325) is energized. The first driving component (33) is disposed on the sliding seat (16) and the first upright plate (17) to drive the sliding seat (16) to move and the rotating ring (31) to rotate. The inner wall detection mechanism (4) includes a rotating rod (41), multiple sets of second detection components (42) and a second drive component (43). The rotating rod (41) is rotatably mounted on the second upright plate (18). The end of the rotating rod (41) near the rotating ring (31) is located inside the rotating ring (31). Multiple sets of second detection components (42) are all mounted on the outer peripheral wall of the rotating rod (41). The second detection components (42) are mounted on the same as the first detection components (32). The second drive component (43) is mounted on the second upright plate (18) and is used to drive the rotating rod (41) to rotate when the sliding seat (16) moves.

2. The apparatus of claim 1 wherein: The fixing component (2) includes a first rotating shaft (21), a rotating arm (22), a lower pressure bar (23), and a lower pressure block (24). The first rotating shaft (21) is rotatably mounted on the fixing seat (13). A toothed ring is fixedly sleeved on the first rotating shaft (21). A rack is fixedly mounted on the telescopic end of the telescopic cylinder (14). The toothed ring and the rack mesh with each other. The telescopic end of the telescopic cylinder (14) extends and retracts, causing the first rotating shaft (21) to rotate. The rotating arm (23) and the lower pressure block (24) are also fixedly mounted on the first rotating shaft (21). 2) Fixedly set at both ends of the first rotating shaft (21), the lower pressure bar (23) is fixedly set at the end of the rotating arm (22) away from the rotating shaft, and two sets of lower pressure blocks (24) are provided. The two sets of lower pressure blocks (24) are set at both ends of the lower pressure bar (23) along the length direction of the lower pressure bar (23). The rotating arm (22) rotates and drives the lower pressure blocks (24) to press down on the tubular arc welded part, and cooperates with the placement block (12) to realize the clamping and fixing of the tubular arc welded part.

3. The apparatus of claim 2 wherein: A fixing block (5) is also provided on the placement seat (11). A second rotating shaft (6) is provided on the fixing block (5). An abutment plate (7) is rotatably provided on the second rotating shaft (6). A pressure sensor (8) is fixedly provided on the fixing block (5). The pressure sensor (8) is located on the side of the second rotating shaft (6) away from the telescopic cylinder (14). A first elastic element (9) is vertically provided between the pressure sensor (8) and the second rotating shaft (6). One side of the first elastic element (9) The end of the first elastic element (9) abuts against the abutting plate (7), and the other end of the first elastic element (9) is fixedly disposed in the fixing block (5). When the tubular arc welded part is placed on the placement block (12), the end of the abutting plate (7) near the telescopic cylinder (14) abuts against the tubular arc welded part, and the end of the abutting plate (7) away from the telescopic cylinder (14) abuts against the pressure sensor (8). When the tubular arc welded part is separated from the placement block (12), the first elastic element (9) causes the abutting plate (7) to rotate and reset.

4. The apparatus of claim 1 wherein: The first drive assembly (33) includes a first drive motor (331), a moving gear (332), a moving rack (333), a second drive motor (334), a connecting rod (335), a first driving gear, and a first driven gear ring (336). The first drive motor (331) is fixedly mounted on the sliding seat (16), and its output shaft passes through the sliding seat (16). The moving gear (332) is fixedly mounted on the output shaft of the first drive motor (331). The moving rack (333) is fixedly mounted on the mounting platform (1), and the moving gear (334) is fixedly mounted on the mounting platform (1). 32) and the moving rack (333) mesh with each other, the second drive motor (334) is fixedly mounted on the sliding seat (16), the connecting rod (335) is fixedly mounted on the output shaft of the second drive motor (334) parallel to the length direction of the sliding seat (16), the first drive gear is fixedly sleeved on the end of the connecting rod (335) away from the second drive motor (334), the first driven gear ring (336) is fixedly sleeved on the outer peripheral wall of the rotating ring (31), and the first drive gear and the first driven gear ring (336) mesh with each other.

5. The apparatus of claim 4 wherein: The second drive assembly (43) includes a second drive gear (431) and a second driven gear ring (432). The second drive gear (431) is fixedly sleeved on the end of the connecting rod (335) near the second drive motor (334), and the second driven gear ring (432) is fixedly sleeved on the end of the rotating rod (41) near the second drive motor (334). The second drive gear (431) and the second driven gear ring (432) mesh with each other.

6. The apparatus of claim 4 wherein: Multiple sets of high-pressure nozzles (311) are provided on the side of the rotating ring (31) away from the second drive motor (334), and an umbrella-shaped nozzle (441) is provided at the end of the rotating rod (41) away from the second drive motor (334).

7. The arc weld inspection device according to claim 1, characterized in that: Multiple sets of the first detection components (32) are arranged at intervals along the length direction of the rotating ring (31) and the circumferential direction of the inner wall of the rotating ring (31), and multiple sets of the second detection components (42) are arranged at intervals along the length direction of the rotating rod (41) and the circumferential direction of the side wall of the rotating rod (41).

8. A process for arc welding inspection of a piece to be welded, based on the device for arc welding inspection of a piece to be welded according to any one of claims 1 to 7, characterized in that: Includes the following steps: S1: Place the tubular arc welded part on the placement block (12), and make the tubular arc welded part pass through the rotating ring (31), and make the end of the rotating rod (41) inside the tubular arc welded part, and ensure that the tubular arc welded part abuts against the abutting plate (7). At this time, the end of the abutting plate (7) away from the telescopic cylinder (14) abuts against the pressure sensor (8). The pressure sensor (8) detects a signal, indicating that the tubular arc welded part is placed in place. S2: Start the telescopic cylinder (14) to rotate the first rotating shaft (21), which drives the pressing block (24) on the rotating arm (22) to press down, and cooperate with the placement block (12) to clamp and fix the tubular arc welded part; S3: Start the first drive motor (331) to move the sliding seat (16) along the slide rail (15), and start the second drive motor (334) to drive the rotating ring (31) and the rotating rod (41) to rotate synchronously; S4: During the rotation of the rotating ring (31) and the rotating rod (41), the contact head (323) of the first detection component (32) contacts the outer wall of the tubular arc welded part, and the contact head (323) of the second detection component (42) contacts the inner wall of the tubular arc welded part; the first electromagnet (324) and the second electromagnet in the first detection component (32) and the second detection component (42) are not energized, and the electrical signal generated by the pressure change of the contact head (323) is detected by the second elastic element (326) and the piezoelectric ceramic (327) to evaluate the welding quality; During this time, the high-pressure nozzle (311) on the rotating ring (31) and the umbrella-shaped nozzle (441) at the end of the rotating rod (41) can be used for auxiliary cleaning or cooling; S5: After the test is completed, stop the first drive motor (331) and the second drive motor (334) to stop the rotating ring (31) and the rotating rod (41) from rotating. The first electromagnet (324) and the second electromagnet (325) are energized to separate the contact head (323) from the tubular arc welded part. Then, control the telescopic cylinder (14) to reset and release the tubular arc welded part. Finally, the tubular arc welded part can be taken out.

Images