Defect self-detection laser welding device

Abstract

The invention discloses a defect self-detection laser welding device and belongs to the field of laser welding, a driving disc is assembled at the top of an electric rotating disc, the driving disc is fixedly connected to the top of a gas analyzer body, a pawl is hinged to the inner wall of the driving disc, and a connecting ring is rotatably connected to the outer wall of a fixing rod; and the inner wall of the connecting ring is fixedly connected with a connecting rod. The steel pipe is fixed to the top of the base, the electric rotating disc is started to drive the welding gun body and the gas analyzer body to rotate forwards and backwards, welding operation and detection work of the steel pipe can be accurately completed, after laser welding is completed, the air pump is started to inject gas into the steel pipe, and the gas analyzer rotates and analyzes gas components of the steel pipe; the pawl and the ratchet wheel are driven by the driving disc to rotate clockwise, and the two ends of the steel pipe are blocked by the hydraulic system, so that the accuracy of a gas analysis process is guaranteed, and whether defects and gas leakage exist in the steel pipe is detected.

Description

Technical Field

[0001] The present application relates to the field of laser welding, and more specifically, to a laser welding device with self-detection of defects. Background Art

[0002] Laser welding is a very commonly used welding method. However, the current laser welding devices have low efficiency, do not have the functions of detecting internal and external defects, low automation degree, and high labor intensity for operators.

[0003] The patent document with the publication number CN112846509B discloses a laser welding device with self-detection of defects, including a first support plate, on which there is a laser welding machine. There are material boxes on the left and right sides of the first support plate. Inside the material boxes are workpieces to be welded in the shape of round tubes. There is a second support plate on the material box. At the lower end of the second support plate is a first piston. There is a gas supply mechanism beside the second support plate. There is a support frame below the first support plate. A first rotating shaft is inserted through the support frame. There is a rotating mechanism on the support frame. There are fixing blocks at the left and right ends of the first rotating shaft. There is a first mounting plate on the fixing blocks. There is an annular sleeve on the first mounting plate. There is a second mounting plate on the annular sleeve. There is a runner assembly on the second mounting plate. There is a first motor beside the runner assembly. There is a controller on the first support plate. It has high welding efficiency, can detect whether there are through cracks at the entire circumferential welding position of the end faces of two round tube-shaped workpieces, and can perform coaxiality detection on the welded semi-finished parts, with high automation degree and reduced labor intensity of workers.

[0004] Although the above laser welding device can detect whether there are through cracks at the entire circumferential welding position of the end faces of two round tube-shaped workpieces, and can perform coaxiality detection on the welded semi-finished parts, with high automation degree and reduced labor intensity of workers, when in use, the steel pipe is not blocked, resulting in a decrease in detection accuracy when using gas detection. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a laser welding device with self-detection of defects, which solves the problems raised in the above background art.

[0006] To achieve the above object, the present application provides a laser welding device with self-detection of defects, including a base, on the top of which an electric turntable is assembled. On the top of the electric turntable, a support plate is assembled. On the front of the top of the support plate, a fixed rod is fixedly connected. On the top of the electric turntable, a welding gun body and a gas analyzer body are fixedly connected. An air pump is fixedly connected to the outer wall of the fixed rod. A clamping assembly is fixedly connected to the bottom of the fixed rod. A driving disc is assembled on the top of the electric turntable. The driving disc is fixedly connected to the top of the gas analyzer body. A ratchet pawl is hinged to the inner wall of the driving disc. A connecting ring is rotatably connected to the outer wall of the fixed rod. A connecting rod is fixedly connected to the inner wall of the connecting ring. A ratchet wheel is fixedly connected to the bottom of the connecting rod. A connecting plate is fixedly connected to the bottom of the fixed rod. A hydraulic component is fixedly connected to the top of the connecting plate. A first cleaning device for removing welding slag from the outer wall of the steel pipe is assembled at the bottom of the connecting plate. A second cleaning device for cleaning welding slag on the top of the base is assembled on the top of the base.

[0007] Preferably, the hydraulic component includes a first hydraulic chamber. A first hydraulic rod is slidably connected to one end of the piston inside the first hydraulic chamber. A connecting hose is fixedly connected to the back of the first hydraulic chamber. A bladder is fixedly connected to the bottom of the connecting hose.

[0008] Preferably, a sliding groove for the first hydraulic rod to slide is formed in the inner wall of the ratchet wheel. A rubber ring is slidably connected to the outer wall of the first hydraulic rod. The rubber ring is fixedly connected to the side of the first hydraulic chamber. The ratchet wheel and the ratchet pawl are meshed with each other.

[0009] Preferably, the first cleaning device includes a conical block. The conical block is fixedly connected to the bottom of the ratchet wheel. A second hydraulic chamber is fixedly connected to the front of the connecting plate. A second hydraulic rod is slidably connected to one end of the piston inside the second hydraulic chamber. A third hydraulic rod is slidably connected to one end of the piston inside the second hydraulic chamber. A first shovel is fixedly connected to the bottom of the third hydraulic rod.

[0010] Preferably, two groups of conical blocks are arranged in a mirror image at the bottom of the ratchet wheel. The second hydraulic rod is provided with an inclination angle for fitting the conical block.

[0011] Preferably, the second cleaning device includes a moving rod. The moving rod is fixedly connected to the bottom of the driving disc. A sleeve is fixedly connected to the bottom of the driving disc. A second shovel is slidably connected to the inner wall of the sleeve. A short rod is fixedly connected to the side of the second shovel. A vertical rod is fixedly connected to the top of the short rod. A vertical plate is fixedly connected to the top of the sleeve. A spring is fixedly connected to the side of the vertical plate.

[0012] Preferably, a collecting groove is formed on the top of the base. A collecting box is slidably connected to the inner wall of the collecting groove.

[0013] Preferably, a limiting groove for the short rod to slide is formed in the inner wall of the electric turntable. One end of the spring away from the vertical plate is fixedly connected to the outer wall of the vertical rod.

[0014] The advantages of this application are as follows: 1. In this application, by fixing the steel pipe on the top of the base and starting the electric turntable to drive the welding gun body and the gas analyzer body to rotate forward and backward, the welding operation and inspection work of the steel pipe can be accurately completed. After welding, start the air pump to inject gas into the steel pipe. The gas analyzer rotates and analyzes the gas composition of the steel pipe. By driving the pawl and ratchet to rotate clockwise through the drive disk, the hydraulic system is used to block both ends of the steel pipe, thereby ensuring the accuracy of the gas analysis process to detect whether there are defects and air leakage inside the steel pipe.

[0015] 2. In this application, the drive disk drives the tapered block, which in turn compresses the second hydraulic rod, increases the pressure in the second hydraulic chamber, drives the third hydraulic rod to descend and clean the welding slag at the welding point, ensuring that the welding slag can be effectively cleaned during the welding process, guaranteeing the welding quality and preventing the welding slag from affecting subsequent processing.

[0016] 3. In this application, the second scraper is driven by the moving rod and the sleeve to clean the welding slag in the welding area. The cooperation of the short rod and the spring ensures that the scraper can effectively clean the welding slag on the top of the base, and the welding slag is collected by the collection box, improving the cleaning efficiency and avoiding the spread of the welding slag, ensuring the cleanliness of the cleaning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings that form a part of this application are used to provide a further understanding of this application, making other features, objectives, and advantages of this application more obvious. The schematic embodiments and descriptions of the drawings of this application are used to explain this application and do not constitute an improper limitation of this application. In the drawings: Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of a partial structure of the present invention; Figure 3 is a schematic diagram of the bottom sectional structure of the present invention; Figure 4 is the present invention Figure 3 is an enlarged schematic diagram of part C in the present invention; Figure 5 is the present invention Figure 2 is an enlarged schematic diagram of part B in the present invention; Figure 6 is an enlarged schematic diagram of part A in 5-1 of the present invention.

[0018] In the above figures, 1. Electric turntable; 21. Driving disc; 22. Pawl; 23. Connecting ring; 24. Connecting rod; 25. Ratchet wheel; 26. Connecting plate; 27. First hydraulic rod; 28. Rubber ring; 29. Connecting hose; 210. Bladder; 211. First hydraulic chamber; 3. First cleaning device; 31. Conical block; 32. Second hydraulic chamber; 33. Second hydraulic rod; 34. Third hydraulic rod; 35. First shovel; 4. Second cleaning device; 41. Moving rod; 42. Sleeve; 43. Second shovel; 44. Short rod; 45. Vertical rod; 46. Spring; 47. Vertical plate; 48. Collection box; 5. Support plate; 6. Fixed rod; 7. Base; 8. Welding gun body; 9. Gas analyzer body; 10. Air pump; 11. Clamping assembly. Detailed implementation manners

[0019] In order to enable those skilled in the art of the present technology to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0020] It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of this application here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or devices.

[0021] In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0022] Moreover, in addition to being used to indicate orientation or positional relationship, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0023] In addition, the terms "install", "set", "provided with", "connect", "connected", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, components or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine the embodiments to detail this application.

[0025] Embodiment 1: Refer to Figures 1-6 , this embodiment provides a laser welding device for self-detecting defects, including a base 7, an electric turntable 1 is assembled on the top of the base 7, a support plate 5 is assembled on the top of the electric turntable 1, a fixed rod 6 is fixedly connected to the front of the top of the support plate 5, a welding gun body 8 and a gas analyzer body 9 are fixedly connected to the top of the electric turntable 1, an air pump 10 is fixedly connected to the outer wall of the fixed rod 6, a clamping assembly 11 is fixedly connected to the bottom of the fixed rod 6, and the clamping assembly 11 includes an electric telescopic rod, the electric telescopic rod is fixedly connected to the inner wall of the connecting plate 26, and a clamping plate is fixedly connected to the side of the electric telescopic rod; A driving disk 21 is assembled on the top of the electric turntable 1. The driving disk 21 is fixedly connected to the top of the gas analyzer body 9. A pawl 22 is hinged to the inner wall of the driving disk 21. A connecting ring 23 is rotatably connected to the outer wall of the fixed rod 6. A connecting rod 24 is fixedly connected to the inner wall of the connecting ring 23. A ratchet 25 is fixedly connected to the bottom of the connecting rod 24. A connecting plate 26 is fixedly connected to the bottom of the fixed rod 6. A hydraulic component is fixedly connected to the top of the connecting plate 26. A first cleaning device 3 for removing the welding slag on the outer wall of the steel pipe is assembled at the bottom of the connecting plate 26. A second cleaning device 4 for cleaning the welding slag on the top of the base 7 is assembled on the top of the base 7. The rotation of the welding gun body 8 and the gas analyzer body 9 is realized through the electric turntable 1 to meet the welding requirements at different positions. The air pump 10 on the fixed rod 6 can input gas into the steel pipe for the gas analyzer body 9 to detect the inside of the steel pipe. The clamping component 11 is used to fix the workpiece to be welded. The driving disk 21 is connected to the gas analyzer body 9, and the pawl 22 on its inner wall meshes with the ratchet 25 at the bottom of the connecting rod 24. When the driving disk 21 rotates, through the cooperation of the pawl 22 and the ratchet 25, the connecting rod 24 and the connecting ring 23 are driven to rotate, thereby realizing the detection of the steel pipe. The hydraulic component is installed on the top of the connecting plate 26 and is used to drive the first cleaning device 3 to remove the welding slag on the outer wall of the steel pipe, while the second cleaning device 4 is used to clean the welding slag on the top of the base 7 to keep the working environment clean. The hydraulic component includes a first hydraulic chamber 211. A first hydraulic rod 27 is slidably connected to one end of the piston inside the first hydraulic chamber 211. A connecting hose 29 is fixedly connected to the back of the first hydraulic chamber 211. A bladder 210 is fixedly connected to the bottom of the connecting hose 29. The working principle of the hydraulic component is that when the first hydraulic rod 27 is extruded, it is transmitted to the inside of the first hydraulic chamber 211 through the connecting hose 29, causing the bladder 210 to expand. By controlling the pressure inside the bladder 210, the two ends of the steel pipe are blocked. A chute for the first hydraulic rod 27 to slide is provided on the inner wall of the ratchet 25. A rubber ring 28 is slidably connected to the outer wall of the first hydraulic rod 27. The rubber ring 28 is fixedly connected to the side of the first hydraulic chamber 211. The ratchet 25 meshes with the pawl 22. The chute design on the inner wall of the ratchet 25 allows the first hydraulic rod 27 to slide inside it, while the rubber ring 28 slows down the ejection speed of the first hydraulic rod 27 through friction, ensuring that during the movement of the first hydraulic rod 27, the ejection is slower and the bladder 210 keeps expanding. The mutual meshing of the ratchet 25 and the pawl 22 is the core working principle of the ratchet mechanism. When the driving disk 21 drives the pawl 22 to rotate, the pawl 22 will push the ratchet 25 to rotate unidirectionally. This unidirectional rotation characteristic enables certain operations during the welding process to be precisely carried out according to the predetermined steps.

[0026] When the above device is in specific use, two steel pipes are fixed by two sets of clamping components 11. The electric turntable 1 is started to drive the welding gun body 8 to rotate counterclockwise to weld the two steel pipes. During the rotation of the electric turntable 1, the driving disk 21 is driven to rotate counterclockwise. The driving disk 21 drives the pawl 22 to slide on the tooth back of the ratchet 25, and the pawl 22 will not drive the ratchet 25 to rotate. After welding, the air pump 10 is started to input gas into the steel pipe. The electric turntable 1 is started to rotate forward. The electric turntable 1 drives the gas analyzer body 9 to rotate. The gas analyzer body 9 drives the driving disk 21 to rotate forward. The driving disk 21 drives the pawl 22 to rotate. The pawl 22 drives the ratchet 25 to rotate clockwise. The rotation of the ratchet 25 squeezes the first hydraulic rod 27 through the chute. The first hydraulic rod 27 moves to the left. The internal pressure of the first hydraulic chamber 211, the connecting hose 29, and the bladder 210 increases, causing the bladder 210 to expand to block the upper and lower ends of the steel pipe. Since the first hydraulic rod 27 slides on the inner wall of the rubber ring 28, when the ratchet 25 continues to rotate clockwise, the first hydraulic rod 27 will not quickly return to the chute at the beginning of the inner wall of the ratchet 25, and the gas analyzer body 9 is used to detect the welded edge of the steel pipe.

[0027] Embodiment 2: Refer to Figures 1-6 , on the basis of Embodiment 1, the first cleaning device 3 includes a tapered block 31. The tapered block 31 is fixedly connected to the bottom of the ratchet 25. A second hydraulic chamber 32 is fixedly connected to the front of the connecting plate 26. One end of the piston inside the second hydraulic chamber 32 is slidably connected to a second hydraulic rod 33. One end of the piston inside the second hydraulic chamber 32 is slidably connected to a third hydraulic rod 34. The bottom of the third hydraulic rod 34 is fixedly connected to a first scraper 35. The working principle of the first cleaning device 3 is to utilize the telescopic actions of the second hydraulic rod 33 and the third hydraulic rod 34 inside the second hydraulic chamber 32 to clean the welding slag. When the second hydraulic rod 33 and the third hydraulic rod 34 extend, they will push the first scraper 35 to contact the outer wall of the steel pipe, thereby scraping off the welding slag. The tapered block 31 is fixedly connected to the bottom of the ratchet 25. Its design enables the tapered block 31 to fit with the inclined part of the second hydraulic rod 33 during the rotation of the ratchet 25, thereby driving the second hydraulic rod 33 to perform precise telescopic actions and achieving efficient cleaning of the welding slag. Two sets of tapered blocks 31 are mirror-symmetrically arranged at the bottom of the ratchet 25. The second hydraulic rod 33 is provided with an inclination angle for fitting with the tapered block 31. The two sets of tapered blocks 31 mirror-symmetrically arranged at the bottom of the ratchet 25 cooperate with the inclination angle design of the second hydraulic rod 33, enabling the second hydraulic rod 33 to perform telescopic actions more smoothly under the drive of the ratchet 25. This design not only improves the cleaning efficiency but also ensures the stability and reliability of the first cleaning device 3 during operation.

[0028] When the above-mentioned device is in specific use, when the driving disk 21 rotates counterclockwise, it drives the conical block 31 at the bottom to rotate clockwise. When the conical block 31 rotates to the front, it squeezes the second hydraulic rod 33. When the second hydraulic rod 33 moves backward, the pressure inside the second hydraulic chamber 32 increases. As the pressure inside the second hydraulic chamber 32 increases, the second hydraulic chamber 32 drives the third hydraulic rod 34 to descend, and the third hydraulic rod 34 drives the first shovel 35 to descend to clean the welding slag at the welded joint of the steel pipe.

[0029] Embodiment 3: Refer to Figures 1-6 , on the basis of Embodiment 1, the second cleaning device 4 includes a moving rod 41. The moving rod 41 is fixedly connected to the bottom of the driving disk 21. A sleeve 42 is fixedly connected to the bottom of the driving disk 21. A second shovel 43 is slidably connected to the inner wall of the sleeve 42. A short rod 44 is fixedly connected to the side of the second shovel 43. A vertical rod 45 is fixedly connected to the top of the short rod 44. A vertical plate 47 is fixedly connected to the top of the sleeve 42. A spring 46 is fixedly connected to the side of the vertical plate 47. The working principle of the second cleaning device 4 is to utilize the rotation of the driving disk 21 to drive the moving rod 41 and the sleeve 42 to move. The second shovel 43 slidably connected to the inner wall of the sleeve 42 can rotate flexibly under the action of the spring 46. When the driving disk 21 rotates, the second shovel 43 will slide left and right in the sleeve 42 to scrape the welding slag on the top of the base 7. The design of the short rod 44 and the vertical rod 45 is used to support and guide the second shovel 43 to ensure the stability of its movement. The cooperation of the vertical plate 47 and the spring 46 provides the necessary elastic force, enabling the second shovel 43 to closely fit the surface of the base 7 to achieve efficient welding slag cleaning. A collection groove is opened on the top of the base 7. A collection box 48 is slidably connected to the inner wall of the collection groove. The collection groove opened on the top of the base 7 and the slidably connected collection box 48 are used to collect the scraped welding slag. During the operation of the second cleaning device 4, the scraped welding slag will fall into the collection groove and finally be collected in the collection box 48, which not only keeps the working environment clean but also facilitates the centralized treatment of the welding slag, improving the environmental protection performance and working efficiency of the welding device. A limiting groove for the short rod 44 to slide is opened on the inner wall of the electric turntable 1. One end of the spring 46 away from the vertical plate 47 is fixedly connected to the outer wall of the vertical rod 45. The limiting groove opened on the inner wall of the electric turntable 1 is used to limit the sliding path of the short rod 44 to ensure the stability and accuracy of the second cleaning device 4 during operation. One end of the spring 46 away from the vertical plate 47 is fixedly connected to the outer wall of the vertical rod 45. This design enables the spring 46 to provide a stable elastic force, causing the second shovel 43 to reciprocate to achieve the cutting effect, and at the same time being able to closely fit the surface of the base 7 to improve the cleaning effect. Through the cooperation of the limiting groove and the spring 46, the second cleaning device 4 can more flexibly adapt to different cleaning requirements to ensure the efficient operation of the welding device.

[0030] When the above-mentioned device is in specific use, the driving disc 21 drives the moving rod 41 to rotate, the moving rod 41 drives the sleeve 42 to rotate, the sleeve 42 drives the second shovel 43 to rotate, and the second shovel 43 drives the short rod 44 to slide on the inner wall of the electric turntable 1 during rotation. When the short rod 44 slides into the limit groove on the inner wall of the electric turntable 1, the spring 46 drives the vertical rod 45 to move outward, the vertical rod 45 drives the short rod 44 to move outward, and the short rod 44 drives the second shovel 43 to reciprocally clean the welding slag on the top of the base 7, pushing the cut welding slag into the collection box 48 to collect the welding slag.

[0031] When the above-mentioned device is in specific use, as described above, the above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A defect self-detection laser welding device, comprising a base, an electric turntable is mounted on the top of the base, a support plate is mounted on the top of the electric turntable, a fixing rod is fixedly connected to the front of the top of the support plate, a welding gun body and a gas analyzer body are fixedly connected to the top of the electric turntable, an air pump is fixedly connected to the outer wall of the fixing rod, and a clamping assembly is fixedly connected to the bottom of the fixing rod; It is characterized in that A driving disk is mounted on the top of the electric turntable, and the driving disk is fixedly connected to the top of the gas analyzer body. A pawl is hinged on the inner wall of the driving disk. A connecting ring is rotatably connected to the outer wall of the fixed rod. A connecting rod is fixedly connected to the inner wall of the connecting ring. A ratchet is fixedly connected to the bottom of the connecting rod. A connecting plate is fixedly connected to the bottom of the fixed rod. A hydraulic assembly is fixedly connected to the top of the connecting plate. A first cleaning device for removing welding slag from the outer wall of a steel pipe is mounted on the bottom of the connecting plate, and a second cleaning device for cleaning welding slag on the top of the base is mounted on the top of the base.

2. A defect self-detection laser welding device according to claim 1, characterized in that: The hydraulic assembly includes a first hydraulic compartment, a first hydraulic rod is slidably connected to a piston at one end of the first hydraulic compartment, a connecting hose is fixedly connected to the back of the first hydraulic compartment, and a capsule is fixedly connected to the bottom of the connecting hose.

3. A defect self-detection laser welding device according to claim 1, characterized in that: The inner wall of the ratchet is provided with a sliding groove for sliding the first hydraulic rod, the outer wall of the first hydraulic rod is slidably connected with a rubber ring, the rubber ring is fixedly connected to the side of the first hydraulic compartment, and the ratchet is meshed with the pawl.

4. A defect self-detection laser welding device according to claim 1, characterized in that: The first cleaning device includes a conical block, which is fixedly connected to the bottom of the ratchet; the front of the connecting plate is fixedly connected to a second hydraulic compartment; a second hydraulic rod is slidably connected to a piston at one end of the second hydraulic compartment; a third hydraulic rod is slidably connected to a piston at one end of the second hydraulic compartment; and a first scraper is fixedly connected to the bottom of the third hydraulic rod.

5. A defect self-detection laser welding device according to claim 4, characterized in that: The bottom of the ratchet wheel is mirror-imaged with two groups of conical blocks, and the second hydraulic rod is provided with an inclination angle for fitting the conical blocks.

6. A defect self-detection laser welding device according to claim 1, characterized in that: The second cleaning device includes a moving rod, which is fixedly connected to the bottom of the driving disk, a sleeve is fixedly connected to the bottom of the driving disk, a second scraper is slidably connected to the inner wall of the sleeve, a short rod is fixedly connected to the side of the second scraper, a vertical rod is fixedly connected to the top of the short rod, a vertical plate is fixedly connected to the top of the sleeve, and a spring is fixedly connected to the side of the vertical plate.

7. A defect self-detection laser welding device according to claim 6, characterized in that: A collecting groove is provided on the top of the base, and a collecting box is slidably connected to the inner wall of the collecting groove.

8. A defect self-detection laser welding device according to claim 7, characterized in that: The inner wall of the electric turntable is provided with a limiting groove for the sliding of the short rod, and one end of the spring away from the vertical plate is fixedly connected to the outer wall of the vertical rod.

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