Submerged-arc welding automatic seam aligning and correcting device based on infrared positioning

Abstract

The invention discloses an automatic seam aligning and correcting device for submerged-arc welding based on infrared positioning, relates to the technical field of submerged-arc welding, and aims to solve the technical problems that a worker needs to manually align a seam at present, the efficiency is low, the precision is poor, and the labor intensity is high. Comprising a machining table, a moving mechanism arranged on the machining table, a welding mechanism arranged on the moving mechanism and a correcting mechanism arranged on the welding mechanism, the moving mechanism comprises a moving box arranged at the rear end of the machining table, the welding mechanism comprises a fixing plate, and an infrared emitter and a camera are arranged at the lower end of a third mounting plate. And the correcting mechanism comprises a correcting pipe, a sixth mounting plate and a scraping plate, and the correcting pipe is mounted at the tail end of the fourth mounting plate. The automatic welding device has the advantages that the welding gun can be automatically monitored and adjusted, compulsive deviation correction is achieved in cooperation with the correction pipe, welding precision is guaranteed, the pressure plate controls the size of a welding seam, the scraper automatically cleans welding slag, the welding efficiency and quality are greatly improved, and the labor cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of submerged arc welding technology, and more specifically, to an automatic seam alignment device for submerged arc welding based on infrared positioning. Background Technology

[0002] Submerged arc welding (SAW) is a highly efficient electric arc welding method. Its principle involves an electric arc burning beneath a layer of flux. The arc heat generated between the welding wire and the workpiece melts the welding wire, base metal, and part of the flux, forming a molten pool and weld. The core characteristic of this process is that the flux covers the arc area, isolating it from air and preventing oxidation of the molten pool. Furthermore, the flux's metallurgical reaction purifies the weld, improving joint quality. Compared to manual arc welding, SAW is highly automated, employing mechanical wire feeding and movement devices. It is suitable for long, straight welds or large-diameter circumferential welds, offering high welding current, deep penetration, and high efficiency.

[0003] Currently, traditional submerged arc welding equipment relies primarily on manual alignment of the weld seam when welding irregular seams such as elliptical joints. This method is not only inefficient and unsuitable for large-scale production, but also demands a high level of skill from operators. Welding accuracy is greatly affected by human factors, easily leading to weld deviations and inconsistent weld quality. Furthermore, prolonged manual operation significantly increases worker fatigue, further impacting welding quality and production safety. Therefore, we propose an automatic weld seam alignment and correction device based on infrared positioning for submerged arc welding. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art, adapt to practical needs, and provide an automatic seam alignment device for submerged arc welding based on infrared positioning, so as to solve the technical problems of low efficiency, poor accuracy and high labor intensity that workers currently need to manually align the seams.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an automatic seam correction device for submerged arc welding based on infrared positioning, comprising a processing table, a moving mechanism mounted on the processing table, a welding mechanism mounted on the moving mechanism, and a correction mechanism mounted on the welding mechanism. The upper end of the processing table is provided with a slag groove, and symmetrical mounting grooves are provided on the upper end of the processing table. A first hydraulic device and a second hydraulic device are respectively mounted in the mounting grooves. A product fixing component is installed at the end of the hydraulic rod of the first hydraulic device. The moving mechanism includes a moving box located at the rear end of the processing table. The welding mechanism includes a fixing plate. A first mounting plate and a second mounting plate are symmetrically arranged at the lower end of the fixing plate. A third mounting plate is bent at ninety degrees at the upper end of the second mounting plate. An infrared transmitter and a camera are provided at the lower end of the third mounting plate. A fourth mounting plate is provided at the end of the third mounting plate. The correction mechanism includes a correction tube, a sixth mounting plate, and a scraper. The correction tube is installed at the end of the fourth mounting plate.

[0006] Preferably, the product fixing component is cylindrical in shape, and a trapezoidal protrusion is provided at the upper end of the product fixing component. The product fixing component is located directly above the welding slag groove. A first support plate is installed at the end of the hydraulic rod of the second hydraulic device. The upper end of the first support plate is arc-shaped and the first support plate is supported at the lower end of the tail of the product fixing component.

[0007] Preferably, a threaded rod is rotatably installed inside the movable box, a first motor for driving the threaded rod is provided at the rear end of the movable box, a movable block adapted to the size of the space inside the movable box is threaded onto the threaded rod, a second support plate is provided at the upper end of the movable block, an opening is provided at the upper end of the movable box, the second support plate extends from the opening to the movable box and connects with the movable block, and a fixed plate is welded to the upper end of the second support plate.

[0008] Preferably, a rotating shaft is rotatably mounted on both the first mounting plate and the second mounting plate, a welding torch is installed between the rotating shafts, and a second motor for driving the rotating shaft is provided on the side end of the first mounting plate.

[0009] Preferably, the correction tube is an elliptical tubular structure, and a correction plate is provided on the inner wall of the upper end of the correction tube. The correction plate is rectangular, and a first ball bearing is provided on the inner wall of the correction tube.

[0010] Preferably, the sixth mounting plate is symmetrically arranged on the correction tube, the correction tube and the sixth mounting plate are integrally formed, the sixth mounting plate is in the shape of an upwardly curved arc, the sixth mounting plate is provided with a third hydraulic device, the end of the third hydraulic device is provided with a fifth mounting plate, the front end of the fifth mounting plate is provided with an array of springs, the end of the springs is provided with a pressure plate, and the front end of the pressure plate is uniformly provided with second balls.

[0011] Preferably, a connecting plate is provided at the rear end of the sixth mounting plate, the connecting plate has an arc-shaped cross-section, and a mounting rod is provided at the end of the connecting plate. The front part of the mounting rod is arc-shaped, the rear part of the mounting rod is L-shaped, and the scraper is installed at the end of the mounting rod.

[0012] Preferably, the front end of the scraper is set with an acute angle, the upper end of the scraper is set with a downward slope from the center to both sides, the two sides of the scraper are symmetrically arranged with a feeding plate, the feeding plate is set with a downward arc, the upper end of the feeding plate is provided with an upwardly bent limiting plate, and the feeding plate is provided with a discharge port.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention designs an infrared emitter and camera structure. The infrared emitter projects a light spot onto the joint area, and the camera and image recognition module monitor the offset between the light spot and the joint in real time. This drives a second motor to adjust the welding torch angle and accurately correct welding position deviations. At the same time, the correction plate inside the correction tube can forcibly correct weld offsets, and the first ball bearing facilitates the rotation of the steel pipe, realizing automatic seam correction. This meets the needs of large-scale production, ensures stable welding accuracy, and solves the problems of low efficiency, poor accuracy, and high labor intensity that currently require workers to manually align the joints.

[0014] 2. This invention also incorporates a corrective tube structure. The corrective tube adopts an elliptical tubular structure, which is adapted to the shape of the elliptical steel pipe product, allowing for better contact with the outer wall of the steel pipe. A rectangular corrective plate located on the inner wall of the upper end of the corrective tube is positioned within the weld seam of the steel pipe. When the weld seam of the steel pipe shifts, the corrective plate can forcefully rotate the steel pipe during the movement of the device, correcting the shifted weld seam position to an upward orientation. This ensures that subsequent welding work can accurately align the joint and guarantee the accuracy of the welding. The inner wall of the corrective tube is equipped with a first ball bearing. When the steel pipe needs to rotate during the correction process, the first ball bearing can convert the sliding friction between the steel pipe and the inner wall of the corrective tube into rolling friction, greatly reducing the friction between the two and making the rotation of the steel pipe smoother and less strenuous. This not only facilitates rapid weld seam correction but also reduces wear on the surface of the steel pipe, protecting product quality.

[0015] 3. This invention also designs a pressure plate structure. Under the synergistic action of the spring and the third hydraulic device, the spring, with its elastic buffering characteristics, can adaptively adjust the pressure according to the actual shape of the steel pipe. The third hydraulic device provides a stable and adjustable power source. The two work closely together to precisely compress both sides of the elliptical steel pipe. Under this bidirectional force, the weld size is strictly controlled within the ideal range, avoiding weak welding due to excessively large welds or welding defects due to excessively small welds. At the same time, the precise angle adjustment of the pressure plate and the welding torch complement each other. The welding torch is aligned with the weld under the guidance of the infrared positioning system, while the pressure plate ensures the stability of the weld shape. With both measures working together, the welding process is guaranteed to be smooth and orderly, significantly improving the welding quality and greatly enhancing the strength and reliability of the welded joint.

[0016] 4. This invention also features a scraper and feed plate structure. The scraper's sharp-angled front end easily cuts into the junction of the welding slag and weld, quickly scooping up the slag. Its upper end slopes downwards from the center to both sides, allowing the scooped-up slag to slide smoothly to both sides under gravity, preventing slag accumulation and ensuring effective cleaning. The feed plate has an upward arc shape, closely connecting with the scraper to form a smooth slag flow channel. After the slag slides down the scraper's slope to the feed plate, it is effectively blocked by the limiting plate and does not splash outwards. Instead, it falls precisely into the discharge port along the arc trajectory of the feed plate, eventually collecting in the slag tank. This achieves automated and efficient collection of welding slag and excess flux without manual intervention, greatly reducing manual cleaning workload. At the same time, it effectively avoids potential fire hazards and equipment jamming caused by welding slag residue, maintaining a clean and orderly working environment and ensuring stable equipment operation and safe production. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a frontal cross-sectional view of the present invention; Figure 3 This is a rear-view cross-sectional structural diagram of the present invention; Figure 4 This is a partial front view schematic diagram of the structure of the present invention; Figure 5 This is a bottom view schematic diagram of the correction mechanism of the present invention; Figure 6 This is a front view schematic diagram of the correction mechanism of the present invention; Figure 7 This is a schematic diagram of the shovel plate structure of the present invention; Figure 8 This is a cross-sectional structural schematic diagram of the correction mechanism of the present invention.

[0018] The following are the labels in the diagram: 101, processing table; 102, welding slag tank; 103, first hydraulic equipment; 104, second hydraulic equipment; 105, product fixing component; 106, first support plate; 200, moving mechanism; 201, moving box; 202, threaded rod; 203, movable block; 204, first motor; 205, second support plate; 300, welding mechanism; 301, fixing plate; 302, first mounting plate; 303, second mounting plate; 304, welding torch; 305, second motor. 306. Third mounting plate; 307. Fourth mounting plate; 308. Infrared transmitter; 309. Camera; 400. Calibration mechanism; 401. Calibration tube; 4011. Calibration plate; 4012. First ball bearing; 402. Sixth mounting plate; 403. Third hydraulic device; 404. Fifth mounting plate; 405. Pressure plate; 4051. Second ball bearing; 406. Connecting plate; 407. Mounting rod; 408. Scraper; 409. Discharge plate; 410. Limiting plate; 411. Discharge port. Detailed Implementation

[0019] like Figures 1 to 8 As shown, the present invention relates to an automatic seam correction device for submerged arc welding based on infrared positioning, comprising a processing table 101, a moving mechanism 200 disposed on the processing table 101, a welding mechanism 300 disposed on the moving mechanism 200, and a correction mechanism 400 disposed on the welding mechanism 300. A slag groove 102 is provided at the upper end of the processing table 101, and mounting grooves are symmetrically arranged at the upper end of the processing table 101. A first hydraulic device 103 and a second hydraulic device 104 are respectively disposed in the mounting grooves. A product fixing component 105 is installed at the end of the hydraulic rod of the first hydraulic device 103. The moving mechanism 200 includes a moving box 201 disposed at the rear end of the processing table 101, and the welding mechanism 300 includes a fixing component 400. The fixed plate 301 and welding mechanism 300 also include existing submerged arc welding equipment, such as a control box, wire feeding mechanism, flux feeding mechanism, etc. A first mounting plate 302 and a second mounting plate 303 are symmetrically arranged at the lower end of the fixed plate 301. A third mounting plate 306 is arranged at the upper end of the second mounting plate 303 after a 90-degree bend. An infrared emitter 308 and a camera 309 are arranged at the lower end of the third mounting plate 306. The camera 309 also works with an existing image recognition module. A fourth mounting plate 307 is arranged at the end of the third mounting plate 306. The correction mechanism 400 includes a correction tube 401, a sixth mounting plate 402, and a scraper 408. The correction tube 401 is installed at the end of the fourth mounting plate 307. This invention utilizes the infrared emitter 308 and camera 309 to automatically monitor and adjust the welding torch 304, and the correction tube 401 forces deviation correction to ensure welding accuracy. The pressure plate 405 controls the weld size, and the scraper 408 automatically cleans the welding slag, greatly improving welding efficiency and quality while reducing labor costs.

[0020] Specifically, the product fixing component 105 is cylindrical in shape, with a trapezoidal protrusion at its upper end. The product fixing component 105 is located directly above the welding slag groove 102. A first support plate 106 is installed at the end of the hydraulic rod of the second hydraulic device 104. The upper end of the first support plate 106 is arc-shaped and supports the lower end of the product fixing component 105. The elliptical steel pipe is an irregular steel pipe, typically constructed by bending steel plates. When welding its seams, it is fitted onto the product fixing component 105, with the welding position of the elliptical steel pipe facing upwards above the trapezoidal protrusion. The height between the product and the welding torch 304 can be adjusted by operating the first hydraulic device 103. The first support plate 106 can be raised or lowered by operating the second hydraulic device 104. Lowering the first support plate 106 away from the product fixing component 105 facilitates product setup, while raising the first support plate 106 provides support at the lower end of the product fixing component 105, ensuring the stability of the product fixing component 105.

[0021] It is worth noting that a threaded rod 202 is rotatably installed inside the movable box 201. A first motor 204 driving the threaded rod 202 is located at the rear end of the movable box 201. A movable block 203 adapted to the size of the space inside the movable box 201 is threaded onto the threaded rod 202. A second support plate 205 is located at the upper end of the movable block 203. An opening is provided at the upper end of the movable box 201. The second support plate 205 extends from the opening to the movable box 201 and connects with the movable block 203. A fixed plate 301 is welded to the upper end of the second support plate 205. During the welding of the elliptical steel pipe, the first motor 204 operates to rotate the threaded rod 202. The rotation of the threaded rod 202 can move the movable block 203, thereby moving the welding mechanism 300 and the correction mechanism 400. The welding mechanism 300 can weld the steel pipe joint, and the correction mechanism 400 can correct the bare pipe joint to prevent the joint position from deviating from the position of the welding torch 304.

[0022] It is worth noting that both the first mounting plate 302 and the second mounting plate 303 are rotatably mounted with rotating shafts, and a welding torch 304 is installed between the rotating shafts. A second motor 305 that drives the rotating shafts is provided on the side end of the first mounting plate 302. During the welding process, the infrared emitter 308 projects a straight light spot onto the joint area. The camera 309 and the image recognition module monitor the offset between the light spot and the joint in real time. Based on the offset, the second motor 305 is activated, causing the welding torch 304 to rotate, which can correct the positional deviation between the welding torch 304 and the weld seam of the elliptical steel pipe.

[0023] It is worth noting that the correction tube 401 is an elliptical tubular structure. A correction plate 4011, rectangular in shape, is installed on the inner wall of the upper end of the correction tube 401. A first ball bearing 4012 is installed on the inner wall of the correction tube 401. When the elliptical steel pipe is installed, it not only fits onto the product fixing part 105 but also passes through the correction tube 401. During submerged arc welding, the correction plate 4011 of the correction tube 401 is located inside the weld seam of the steel pipe. As the correction tube 401 moves, when the weld seam position of the steel pipe shifts, the correction plate 4011 can force the correction tube 401 to rotate, correcting the weld seam position upwards. The first ball bearing 4012 facilitates the rotation angle of the steel pipe.

[0024] Furthermore, a sixth mounting plate 402 is symmetrically arranged on the correction tube 401. The correction tube 401 and the sixth mounting plate 402 are integrally formed. The sixth mounting plate 402 is in an upwardly curved arc shape. A third hydraulic device 403 is installed on the sixth mounting plate 402. A fifth mounting plate 404 is installed at the end of the third hydraulic device 403. Springs are arrayed at the front end of the fifth mounting plate 404. A pressure plate 405 is installed at the end of the springs. Second ball bearings 4051 are evenly arranged at the front end of the pressure plate 405. After the steel pipe product is corrected, it is welded. During the welding process, the pressure plate 405 can squeeze both sides of the elliptical steel pipe under the action of the springs. Under the action of pressure, the size of the weld seam of the elliptical steel pipe can be reduced. With the cooperation of the third hydraulic device 403, the pressure applied by the pressure plate 405 to the elliptical steel pipe can be adjusted, which can effectively prevent the weld seam of the elliptical steel pipe from being too large or too small, and ensure the accuracy and quality of the welding of the elliptical steel pipe.

[0025] Furthermore, a connecting plate 406 is provided at the rear end of the sixth mounting plate 402. The connecting plate 406 has an arc-shaped cross-section, and a mounting rod 407 is provided at the end of the connecting plate 406. The front part of the mounting rod 407 is arc-shaped, and the rear part of the mounting rod 407 is L-shaped. A scraper 408 is installed at the end of the mounting rod 407. The special shape of the connecting plate 406 and the mounting rod 407 can change the position of the scraper 408, so that the scraper 408 can be located above the weld seam after the elliptical steel pipe is welded. During the movement of the correction mechanism 400, the scraper 408 can remove the weld slag.

[0026] Furthermore, the front end of the scraper 408 is set with an acute angle, and the upper end of the scraper 408 is set with a downward slope from the center to both sides. A feed plate 409 is symmetrically arranged on both sides of the scraper 408, and the feed plate 409 is set with a downward arc shape. A limiting plate 410 with an upward bending is set at the upper end of the feed plate 409, and a discharge port 411 is opened on the feed plate 409. When the scraper 408 cleans the welding slag, because the upper end of the scraper 408 is set with a downward slope from the center to both sides, the scraped welding slag will slide off the upper end of the scraper 408 to both sides, thus sliding onto the feed plate 409. The limiting plate 410 prevents the welding slag from sliding outwards, allowing the welding slag to enter the discharge port 411, and then enter the welding slag tank 102 through the discharge port 411, which facilitates the collection of welding slag and excess flux.

[0027] Working Principle: This embodiment provides an automatic seam correction device for submerged arc welding based on infrared positioning. In use, the elliptical steel pipe to be welded is first placed on the product fixing part 105 on the processing table 101, while simultaneously passing through the correction tube 401 in the correction mechanism 400. At this time, the welding position of the elliptical steel pipe faces upwards, located above the trapezoidal protrusion at the upper end of the product fixing part 105. The second hydraulic device 104 operates, causing the first support plate 106 to rise and support the lower end of the product fixing part 105, ensuring the stability of the product fixing part 105. The first hydraulic device 103 can adjust the height between the product and the welding torch 304. After starting the device, the moving mechanism 200 begins to work, and the first motor 204 drives the moving box 201. The threaded rod 202 rotates, causing the threaded block 203 connected to it to move. The movable block 203, through the second support plate 205, drives the welding mechanism 300 and the correction mechanism 400 to move as a whole. During the movement, the infrared emitter 308 in the welding mechanism 300 projects a straight light spot onto the joint area of ​​the elliptical steel pipe. The camera 309, in conjunction with the image recognition module, monitors the offset between the light spot and the joint in real time. When an offset exists, the second motor 305 drives the rotating shafts on the first mounting plate 302 and the second mounting plate 303 to rotate, thereby adjusting the angle of the welding torch 304 and correcting the positional deviation between the welding torch 304 and the weld, ensuring welding accuracy. At the same time, the correction mechanism 400 plays a corrective role, and the elliptical steel pipe passes through the correction tube. 401. The correction plate 4011 inside the correction tube 401 is located within the weld seam of the steel pipe. When the weld seam shifts, the correction plate 4011 forces the elliptical steel pipe to rotate, correcting the weld seam position so that it faces upwards. The first ball bearing 4012 on the inner wall of the correction tube 401 facilitates the rotation of the steel pipe. The third hydraulic device 403 on the sixth mounting plate 402 operates, using the fifth mounting plate 404 and spring to drive the pressure plate 405 to press the sides of the elliptical steel pipe. The spring acts as a buffer during the pressing process. The pressure can be adjusted using the third hydraulic device 403 to reduce the size of the elliptical steel pipe weld seam, preventing it from being too large or too small, ensuring welding accuracy and quality. The second ball bearing 4051 at the front end of the pressure plate 405 can reduce... During welding, friction occurs between the scraper and the steel pipe. As the alignment mechanism 400 moves, the scraper 408, connected to the rear end of the sixth mounting plate 402 via the connecting plate 406 and the mounting rod 407, is positioned above the weld seam of the elliptical steel pipe. The front end of the scraper 408 has an acute angle, facilitating the removal of weld slag. Because the upper end of the scraper 408 slopes downwards from the center to both sides, the removed weld slag slides to both sides onto the feed plate 409. Under the action of the limiting plate 410 at the upper end of the feed plate 409, the weld slag does not slide outwards but enters the weld slag tank 102 through the discharge port 411, achieving the collection of weld slag and excess flux. The entire process achieves automatic seam alignment, precise welding, and automatic slag cleaning for submerged arc welding of elliptical steel pipes, eliminating the need for manual alignment of the joint by workers.It improved welding efficiency and precision, and reduced the labor intensity of workers.

[0028] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. An automatic seam alignment device for submerged arc welding based on infrared positioning, characterized in that, The system includes a processing table (101), a moving mechanism (200) mounted on the processing table (101), a welding mechanism (300) mounted on the moving mechanism (200), and a correction mechanism (400) mounted on the welding mechanism (300). The upper end of the processing table (101) is provided with a slag groove (102), and the upper end of the processing table (101) is symmetrically provided with mounting grooves. The mounting grooves are respectively provided with a first hydraulic device (103) and a second hydraulic device (104). The hydraulic rod of the first hydraulic device (103) is equipped with a product fixing component (105). The moving mechanism (200) includes a moving box (201) located at the rear end of the processing table (101). The welding mechanism (300) includes a fixing plate (301), a first mounting plate (302) and a second mounting plate (303) are symmetrically arranged at the lower end of the fixing plate (301), a third mounting plate (306) is arranged at the upper end of the second mounting plate (303) bent at ninety degrees, an infrared transmitter (308) and a camera (309) are arranged at the lower end of the third mounting plate (306), and a fourth mounting plate (307) is arranged at the end of the third mounting plate (306). The correction mechanism (400) includes a correction tube (401), a sixth mounting plate (402) and a scraper (408), and the correction tube (401) is installed at the end of the fourth mounting plate (307).

2. The automatic seam alignment device for submerged arc welding based on infrared positioning according to claim 1, characterized in that, The product fastener (105) is cylindrical in shape, and a trapezoidal protrusion is provided at the upper end of the product fastener (105). The product fastener (105) is located directly above the welding slag tank (102). A first support plate (106) is installed at the end of the hydraulic rod of the second hydraulic device (104). The upper end of the first support plate (106) is arc-shaped, and the first support plate (106) is supported at the lower end of the tail of the product fastener (105).

3. The automatic seam alignment device for submerged arc welding based on infrared positioning according to claim 2, characterized in that, A threaded rod (202) is rotatably installed inside the movable box (201). A first motor (204) for driving the threaded rod (202) is provided at the rear end of the movable box (201). A movable block (203) adapted to the size of the space inside the movable box (201) is threaded onto the threaded rod (202). A second support plate (205) is provided at the upper end of the movable block (203). An opening is provided at the upper end of the movable box (201). The second support plate (205) extends from the opening to the movable box (201) and connects with the movable block (203). The fixed plate (301) is welded to the upper end of the second support plate (205).

4. The automatic seam alignment device for submerged arc welding based on infrared positioning according to claim 3, characterized in that, A rotating shaft is rotatably mounted on both the first mounting plate (302) and the second mounting plate (303), and a welding torch (304) is installed between the rotating shafts. A second motor (305) for driving the rotating shaft is provided on the side end of the first mounting plate (302).

5. The automatic seam alignment device for submerged arc welding based on infrared positioning according to claim 4, characterized in that, The correction tube (401) is an elliptical tubular structure. A correction plate (4011) is provided on the inner wall of the upper end of the correction tube (401). The correction plate (4011) is rectangular. A first ball bearing (4012) is provided on the inner wall of the correction tube (401).

6. The automatic seam alignment device for submerged arc welding based on infrared positioning according to claim 5, characterized in that, The sixth mounting plate (402) is symmetrically arranged on the correction tube (401). The correction tube (401) and the sixth mounting plate (402) are integrally formed. The sixth mounting plate (402) is in the shape of an upwardly curved arc. A third hydraulic device (403) is provided on the sixth mounting plate (402). A fifth mounting plate (404) is provided at the end of the third hydraulic device (403). A spring is arranged in an array at the front end of the fifth mounting plate (404). A pressure plate (405) is provided at the end of the spring. A second ball bearing (4051) is evenly arranged at the front end of the pressure plate (405).

7. The automatic seam alignment device for submerged arc welding based on infrared positioning according to claim 6, characterized in that, The sixth mounting plate (402) has a connecting plate (406) at its rear end. The connecting plate (406) has an arc-shaped cross section. The connecting plate (406) has a mounting rod (407) at its end. The front part of the mounting rod (407) is arc-shaped, and the rear part of the mounting rod (407) is L-shaped. The scraper (408) is installed at the end of the mounting rod (407).

8. The automatic seam alignment device for submerged arc welding based on infrared positioning according to claim 7, characterized in that, The front end of the scraper (408) is set with an acute angle. The upper end of the scraper (408) is set with a downward slope from the center to both sides. The scraper (408) is symmetrically set with a feeding plate (409) on both sides. The feeding plate (409) is set with a downward arc. The upper end of the feeding plate (409) is set with a limiting plate (410) that is bent upward. The feeding plate (409) is provided with a discharge port (411).

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