A welding torch angle adjustment device

Abstract

This invention discloses a welding torch angle adjustment device, relating to the field of welding technology. The invention includes a main body with a lifting platform located at its lower interior. Circular openings are located on both sides of the main body. Sliding columns are fixed to the rear of both sides of the main body, and bidirectional screws are rotatably mounted to the front of both sides. Two arc-shaped clamping plates are threadedly connected to the outer surfaces of the two bidirectional screws. The ends of the arc-shaped clamping plates away from the bidirectional screws are slidably mounted on the outside of the sliding columns. This invention achieves welding torch angle adjustment through the cooperation of bidirectional screws, arc-shaped clamping plates, sliding columns, through-hole sliding plates, and a cylindrical cylinder. This facilitates welding of circular workpieces, avoiding the problem of inaccurate welding positions caused by the welding torch being unable to adjust to a suitable angle when welding circular workpieces, thus improving the welding quality of circular workpieces.

Description

Technical Field

[0001] This invention relates to the field of welding technology, specifically to a welding torch angle adjustment device. Background Technology

[0002] A welding torch is a handheld tool used for welding, typically consisting of electrodes, a current transmission line, and a nozzle. It heats the welding area using an electric current, melting the metal and forming a weld. Welding torches are designed in various models and configurations to suit different welding requirements, such as handheld, automated, or semi-automatic. They are easy to operate and widely used in manufacturing and repair industries. During use, an angle adjustment device is used to adjust the working angle of the welding torch to optimize the welding process.

[0003] Patent publication number CN210817855U discloses an automatic angle adjustment device for welding torches, belonging to the field of welding torch technology. The device includes a body with a sliding groove on one side of its lower surface. This automatic angle adjustment device comprises a cylinder, a main board, a piston rod, a slide table, a motor, a turntable, and an angle sensor. When the user uses this device to weld a workpiece, the cylinder and motor are activated. The cylinder, through the piston rod, drives the slide table to slide within the sliding groove, thereby causing the welding torch to slide. The motor drives the turntable to rotate, which in turn rotates the welding torch. When the welding torch rotates and comes into close contact with the workpiece, the angle sensor measures the angle and transmits an electrical signal to the main board, causing the main board to activate the welding torch. This allows the device to freely adjust the angle of the welding torch, eliminating the need for manual adjustment by the user, thus greatly reducing the user's workload and improving work efficiency.

[0004] However, the current angle adjustment device has the following problems: it is not convenient to adjust the angle of the welding torch to adapt to welding round workpieces. Therefore, when welding round workpieces, the welding torch cannot be adjusted to a suitable angle, which can easily lead to inaccurate welding position and failure to achieve the expected welding position or welding quality. Therefore, we propose a welding torch angle adjustment device. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a welding torch angle adjustment device, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a welding torch angle adjustment device, comprising a main body, a lifting platform disposed at the lower interior of the main body, circular openings on both sides of the main body, sliding columns fixed at the rear of both sides of the main body, and bidirectional screws rotatably mounted at the front of both sides of the main body. Two arc-shaped clamping plates are threadedly connected to the outer sides of the two bidirectional screws. The ends of the arc-shaped clamping plates away from the bidirectional screws are slidably mounted on the outside of the sliding columns. Cylindrical sections are fixed to both sides of the inner wall of the main body, and a through-hole sliding plate is slidably mounted between the outer walls of the two cylindrical sections. A through-hole is provided at the top of the through-hole sliding plate. The bidirectional screws drive the arc-shaped clamping plates to move along the outside of the sliding columns toward the circular workpiece, thereby clamping the circular workpiece at the center of the cylindrical section, ensuring that the circular workpiece and the circular motion trajectory of the through-hole sliding plate are concentric. Then, the welding torch tip is inserted into the through-hole of the through-hole sliding plate, and the welding torch is rotated. The welding torch drives the through-hole sliding plate to rotate along the outside of the cylindrical section, thus achieving the angle adjustment of the welding torch.

[0007] According to the above technical solution, threaded blocks are fixed on both sides of the through-hole slide plate. A threaded rod is threadedly connected to the top of the threaded block. Thirty-six insertion holes are opened on the outside of the two cylinders, and the included angle between two adjacent insertion holes is ten degrees. The threaded rod is inserted into the insertion hole of the cylinder. Before the through-hole slide plate rotates, the threaded rod is rotated. Under the action of the thread between the threaded rod and the threaded block, the threaded rod will move away from the cylinder and separate from the insertion hole of the cylinder. At this time, the threaded rod no longer restricts the position of the threaded block. The through-hole slide plate can be rotated by the welding gun. Since the distance between the two insertion holes of the cylinder is ten degrees, the operator can insert the threaded rod into the insertion hole of the corresponding degree to adjust the angle position of the through-hole slide plate.

[0008] According to the above technical solution, the top of the through-hole slide plate is provided with a positioning device for stabilizing the welding torch. The positioning device includes two L-shaped groove rods, two telescopic columns, a through-hole plate, a slip ring, two fixing blocks, two L-shaped inclined clamps, and two T-shaped columns. The two L-shaped groove rods are respectively fixed to the top two sides of the through-hole slide plate. The slip ring is slidably installed between the two L-shaped groove rods. The two telescopic columns are respectively fixed to the bottom two sides of the slip ring, and the telescopic columns penetrate the top of the through-hole slide plate. The through-hole plate is fixed to the bottom of the two telescopic columns. The two fixing blocks are respectively fixed to the front and rear sides of the top of the slip ring. The two T-shaped columns penetrate the sides of the two fixing blocks that are far apart from each other. The inclined clamps are fixed on the sides of the two T-shaped columns that are close to each other. A spring is provided between the L-shaped inclined clamp and the fixing block. When the welding torch tip is inserted into the through hole of the through hole slide plate, the welding torch will first be inserted between the two L-shaped inclined clamps. Under the action of the spring force of the two L-shaped inclined clamps, the T-shaped column drives the L-shaped inclined clamp to clamp and fix the welding torch. When the welding torch moves towards the workpiece to weld, the welding torch pushes the slip ring towards the workpiece. The slip ring drives the through hole plate towards the outer wall of the workpiece through the telescopic column. When the through hole plate contacts the outer wall of the workpiece, the slip ring continues to move and squeezes the telescopic column. The telescopic column is compressed. At this time, the telescopic column drives the through hole plate to apply pressure to the outside of the two circular workpieces.

[0009] According to the above technical solution, the positioning device further includes a return frame, a threaded rod, and a limiting plate. The return frame is fixed on the side of the L-shaped groove rod away from the through-hole slide plate. The threaded rod is rotatably installed inside the return frame. The limiting plate is threadedly connected to the outside of the threaded rod and is slidably installed inside the return frame. An opening is provided on the outside of the L-shaped groove rod on one side. The limiting plate extends into the opening of the L-shaped groove rod and is located below one side of the slip ring. Simultaneously, rotating the threaded rod causes the limiting plate to move upward or downward along the inside of the return frame. The position of the limiting plate is adjusted according to the distance requirement between the welding torch and the workpiece. During the process of the welding torch pushing the slip ring towards the workpiece, the limiting plate restricts the position of the slip ring, and the slip ring restricts the distance between the welding torch and the workpiece.

[0010] According to the above technical solution, the through-hole plate is equipped with an anti-foreign object device for cleaning foreign objects and impurities from the workpiece surface. The anti-foreign object device includes four arc rods, two serrated scrapers, four L-shaped spring rods, two rubber wheels, and two elliptical grooves. The two rubber wheels are rotatably mounted on the middle of both sides of the through-hole plate. The top of the through-hole plate has an opening for accommodating the rubber wheels. The two elliptical grooves are respectively located on the side of the two rubber wheels away from the through-hole plate. The front and rear sides of the through-hole plate are provided with strip-shaped cavities. The four arc rods are slidably mounted inside the two strip-shaped cavities, and two of the four arc rods form a group. The two serrated scrapers are respectively fixed to the ends of the two groups of arc rods away from the through-hole plate. L-shaped spring rods are fixed on both sides of the two serrated shovel plates. The ends of the four L-shaped spring rods away from the serrated shovel plates are slidably installed inside the two elliptical grooves. When the through-hole slide plate rotates outside the cylinder, the through-hole slide plate drives the through-hole plate to rotate through the telescopic column. The through-hole plate drives the serrated shovel plates to scrape off impurities on the surface of the workpiece. At the same time, after the through-hole plate contacts the outside of the workpiece, the through-hole plate drives the rubber wheel to contact the outside of the workpiece. The through-hole plate drives the rubber wheel to rotate outside the workpiece. Under the action of friction between the rubber wheel and the workpiece, the workpiece drives the rubber wheel to rotate. The rubber wheel drives the elliptical groove on it to rotate. The elliptical groove pushes the L-shaped spring rods to move intermittently away from the center of the through-hole plate. The L-shaped spring rods push the serrated shovel plates to move intermittently.

[0011] According to the above technical solution, the anti-foreign object device further includes a convex wheel, an abutment rod, a U-shaped striking rod, and a U-shaped frame. The convex wheel is fixed to the end of the rubber wheel away from the through-hole plate. The U-shaped frame is fixed to the top of the through-hole slide plate. The U-shaped striking rod is slidably installed inside the opening of the through-hole slide plate. A spring is provided between the U-shaped striking rod and the U-shaped frame. The abutment rod is fixed to the bottom of the inner wall of the U-shaped striking rod. A semi-circular convex block is fixed to the outside of the convex wheel. The bottom of the abutment rod is semi-circular. The object is positioned on the semi-circular cam of the cam wheel. Simultaneously, the rubber wheel drives the cam wheel to rotate. The semi-circular cam of the cam wheel pushes the semi-circular abutment rod, causing the abutment rod to move away from the cam wheel. The abutment rod drives the U-shaped striking rod away from the L-shaped spring rod. The spring corresponding to the U-shaped striking rod is compressed. When the semi-circular cam of the cam wheel no longer pushes the semi-circular abutment rod, under the action of the spring force corresponding to the U-shaped striking rod, the U-shaped striking rod resets and strikes the L-shaped spring rod. The L-shaped spring rod vibrates and drives the sawtooth shovel plate to vibrate.

[0012] This invention provides a welding torch angle adjustment device. It has the following beneficial effects:

[0013] (1) The present invention achieves the angle adjustment of the welding gun by means of a two-way screw, an arc-shaped clamp, a sliding column, a through-hole sliding plate, and a cylinder, which facilitates the welding operation of the welding gun on round workpieces. This avoids the problem that the welding gun cannot be adjusted to a suitable angle when welding round workpieces, which can easily lead to inaccurate welding position, thereby improving the welding quality of the welding gun on round workpieces. At the same time, the through-hole sliding plate, the threaded insert rod, the threaded block, and the insertion hole of the cylinder allow the through-hole sliding plate to adjust the angle position of the welding gun according to the requirements, thereby improving the adaptability of the welding gun angle adjustment.

[0014] (2) The present invention uses a positioning device to clamp and fix the welding torch with an L-shaped inclined clamp, thereby improving the stability of the welding torch during use and avoiding the problem of the welding torch shaking during welding, which would lead to uneven weld width and depth, affecting the strength and quality of the weld. At the same time, the slip ring, telescopic column, and through-hole plate work together to apply pressure to the outside of the two circular workpieces. Due to their shape, the contact area of ​​the circular workpieces may be uneven during welding. The pressure applied by the through-hole plate to the outside of the circular workpieces can ensure close contact between the workpieces during welding, which helps to reduce the formation of pores and improve the density and quality of the weld. At the same time, the threaded rod drives the limiting plate to restrict the position of the slip ring. The slip ring restricts the distance between the welding torch and the workpiece, thereby ensuring that the distance between the welding torch and the workpiece is constant when the welding torch is welding the workpiece. This avoids the problem that the unstable distance between the welding torch and the workpiece will lead to inconsistent weld width and shape, or even gaps or pores between the welds.

[0015] (3) By setting up an anti-foreign object device, the present invention enables the through-hole slide plate, telescopic column, and through-hole plate to work together to drive the saw tooth scraper to scrape off the impurities on the surface of the workpiece, thereby avoiding the problem that impurities affect the welding quality of the workpiece and cause insufficient weld strength. At the same time, the through-hole plate, rubber wheel, elliptical groove, L-shaped spring rod, and through-hole plate work together to push the saw tooth scraper to move intermittently, thereby improving the efficiency of the saw tooth scraper to scrape off the impurities adhering to the surface of the workpiece. Meanwhile, the rubber wheel, convex wheel, and abutment rod work together to drive the U-shaped striking rod to strike the L-shaped spring rod. The L-shaped spring rod vibrates and drives the saw tooth scraper to vibrate, and the saw tooth scraper shakes off the impurities adhering to it, thereby facilitating the continuous scraping of impurities off the surface of the workpiece by the saw tooth scraper. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the entire invention;

[0017] Figure 2 This is a three-dimensional bottom view schematic diagram of the entire invention;

[0018] Figure 3 This is a schematic diagram of a partial structure of the present invention;

[0019] Figure 4 This is a schematic diagram of the positioning device of the present invention. Figure 1 ;

[0020] Figure 5 This is a schematic diagram of the positioning device of the present invention. Figure 2 ;

[0021] Figure 6 This is a schematic diagram of the foreign object prevention device of the present invention;

[0022] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at point A.

[0023] In the diagram: 1. Main body of the device; 2. Lifting platform; 3. Positioning device; 31. L-shaped groove rod; 32. Telescopic column; 33. Through-hole plate; 34. Slip ring; 35. Fixing block; 36. L-shaped inclined clamping plate; 37. T-shaped column; 38. Reverse frame; 39. Threaded rod; 310. Limiting plate; 4. Anti-foreign object device; 41. Arc rod; 42. Serrated shovel plate; 43. L-shaped spring rod; 44. Rubber wheel; 45. Elliptical groove; 46. Protruding wheel; 47. Abutment rod; 48. U-shaped striking rod; 49. U-shaped frame; 5. Cylinder; 6. Sliding column; 7. Arc-shaped clamping plate; 8. Bidirectional screw; 9. Through-hole sliding plate; 10. Threaded block; 11. Threaded insertion rod. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Please see Figure 1-7 One embodiment of the present invention is a welding torch angle adjustment device, comprising a device body 1, a lifting platform 2 disposed at the lower interior of the device body 1, the lifting platform 2 being used to support non-circular workpieces and to control the lifting and lowering of non-circular workpieces, circular openings on both sides of the device body 1, sliding columns 6 fixed at the rear of both sides of the device body 1, and bidirectional screws 8 rotatably mounted at the front of both sides of the device body 1, with two arc-shaped clamping plates 7 threadedly connected to the outside of the two bidirectional screws 8, the end of the arc-shaped clamping plate 7 away from the bidirectional screws 8 being slidably mounted on the outside of the sliding column 6, and cylindrical cylinders 5 fixed on both sides of the inner wall of the device body 1, with a through-hole sliding plate 9 slidably mounted between the outer walls of the two cylindrical cylinders 5, the top of the through-hole sliding plate 9 having a through hole. Through the above structure, the angle adjustment of the welding torch is realized, thereby facilitating the welding torch to perform welding operations on circular workpieces, thus avoiding the problem that the welding torch cannot be adjusted to a suitable angle when welding circular workpieces, which easily leads to inaccurate welding positions, and thus improving the welding quality of the welding torch on circular workpieces.

[0026] Both sides of the through-hole slide plate 9 are fixed with threaded blocks 10. The top of the threaded blocks 10 is threaded and connected with a threaded rod 11. Thirty-six insertion holes are opened on the outside of the two cylinders 5, and the included angle between two adjacent insertion holes is ten degrees. The threaded rod 11 is inserted into the insertion hole of the cylinder 5. With the above structure, the operator can insert the threaded rod 11 into the corresponding insertion hole to adjust the angle position of the through-hole slide plate 9. Thus, the through-hole slide plate 9 can adjust the angle position of the welding gun according to the requirements, thereby improving the adaptability of the welding gun angle adjustment.

[0027] The top of the through-hole slide plate 9 is equipped with a positioning device 3 for stabilizing the welding torch. The positioning device 3 includes two L-shaped groove rods 31, two telescopic columns 32, a through-hole mounting plate 33, a slip ring 34, two fixing blocks 35, two L-shaped inclined clamps 36, and two T-shaped columns 37. The two L-shaped groove rods 31 are respectively fixed on both sides of the top of the through-hole slide plate 9. The slip ring 34 is slidably installed between the two L-shaped groove rods 31. The two telescopic columns 32 are respectively fixed on both sides of the bottom of the slip ring 34, and the telescopic columns 32 penetrate through the top of the through-hole slide plate 9. The through-hole mounting plate 33 is fixed to the bottom of the two telescopic columns 32. The two fixing blocks 35 are respectively fixed on the front and rear sides of the top of the slip ring 34. The two T-shaped columns 37 penetrate through the two fixing blocks 35 on the opposite sides. The two L-shaped inclined clamps 36 are respectively fixed on the two sides of the slip ring 9. The T-shaped columns 37 are close to each other on one side, and a spring is provided between the L-shaped inclined clamp 36 and the fixing block 35. Through the above structure, the L-shaped inclined clamp 36 clamps and fixes the welding gun, thereby improving the stability of the welding gun during use and avoiding the problem of the welding gun shaking during the welding process, which would lead to uneven weld width and depth, affecting the strength and quality of the weld. At the same time, through the above structure, the telescopic column 32 drives the through hole plate 33 to apply pressure to the outside of the two circular workpieces. Circular workpieces often have uneven contact areas during welding due to their shape. The pressure applied by the through hole plate 33 to the outside of the circular workpieces can ensure close contact between the workpieces during the welding process, which helps to reduce the formation of pores and improve the density and quality of the weld.

[0028] The positioning device 3 also includes a retractable frame 38, a threaded rod 39, and a limiting plate 310. The retractable frame 38 is fixed to the side of the L-shaped groove rod 31 away from the through-hole slide plate 9. The threaded rod 39 is rotatably installed inside the retractable frame 38. The limiting plate 310 is threadedly connected to the outside of the threaded rod 39 and is slidably installed inside the retractable frame 38. An opening is provided on the outside of the L-shaped groove rod 31 on one side. The limiting plate 310 extends into the opening of the L-shaped groove rod 31 and is located below one side of the slip ring 34. Through the above structure, the limiting plate 310 restricts the position of the slip ring 34, and the slip ring 34 restricts the distance between the welding torch and the workpiece. This ensures that the distance between the welding torch and the workpiece is constant when the welding torch is welding the workpiece, thereby avoiding the problem that the weld width and shape are inconsistent due to the unstable distance between the welding torch and the workpiece, or even the gaps or pores between the welds.

[0029] In use, when two circular workpieces need to be welded together, the two circular workpieces are inserted into the two cylinders 5 through the circular openings on both sides of the main body 1. The double-acting screw 8 is driven by the motor to rotate, and the double-acting screw 8 drives the arc-shaped clamping plate 7 to move along the outside of the sliding column 6 towards the circular workpiece, so that the arc-shaped clamping plate 7 clamps the circular workpiece at the center of the cylinder 5, thus ensuring that the circular workpiece and the circular motion trajectory of the through-hole slide plate 9 are concentric. Then, the welding torch tip is inserted into the through hole of the through-hole slide plate 9, and the welding torch is rotated. The welding torch drives the through-hole slide plate 9 to rotate along the outside of the cylinder 5. At this time, the angle of the welding torch is adjusted, which is beneficial for welding the circular workpiece. This avoids the problem that the welding torch cannot be adjusted to a suitable angle when welding the circular workpiece, which can easily lead to inaccurate welding position, and thus improves the welding quality of the circular workpiece. Before the through-hole slide plate 9 rotates, the threaded insert rod 11 is rotated, and the threaded insert rod 11 and the threaded block 10 are connected by a thread. Under the action, the threaded insert 11 will move away from the cylinder 5, and the threaded insert 11 will separate from the insertion hole of the cylinder 5. At this time, the threaded insert 11 no longer restricts the position of the threaded block 10, and the through hole slide plate 9 can be rotated by the welding gun. Since the distance between the two insertion holes of the cylinder 5 is ten degrees, the operator can insert the threaded insert 11 into the insertion hole of the corresponding degree to adjust the angle position of the through hole slide plate 9, so that the through hole slide plate 9 can adjust the angle position of the welding gun according to the requirements, thereby improving the adaptability of the welding gun angle adjustment. Here, after the threaded insert 11 separates from the insertion hole of the cylinder 5 and releases the locking of the through hole slide plate 9, the angle adjustment device can realize the left and right rotation of the through hole slide plate 9 to realize the welding operation of the circular workpiece. When the threaded insert 11 is inserted into the insertion hole position of different degrees, the angle adjustment device can control the angle position of the welding gun through the through hole slide plate 9, thereby realizing the welding operation for multiple angles and curved surfaces of complex workpieces.

[0030] During the process of the welding torch tip extending into the through hole of the through hole slide plate 9, the welding torch will first be inserted between the two L-shaped inclined clamps 36. Under the action of the spring force corresponding to the two L-shaped inclined clamps 36, the T-shaped column 37 drives the L-shaped inclined clamps 36 to clamp and fix the welding torch, thereby improving the stability of the welding torch during use and avoiding the problem of the welding torch shaking during the welding process, which would lead to uneven weld width and depth on the workpiece, affecting the strength and quality of the weld. When the welding torch moves towards the workpiece to weld, the welding torch pushes the slip ring 34 towards the workpiece. The slip ring 34 drives the through hole plate 33 towards the outer wall of the workpiece through the telescopic column 32. When the through hole plate 33 contacts the outer wall of the workpiece, as the slip ring 34 continues to move, the slip ring 34 will squeeze the telescopic column 32. The telescopic column 32 is compressed. At this time, the telescopic column 32 drives the through hole plate 33 to apply pressure to the outside of the two circular workpieces. During the welding process, the contact area of ​​round workpieces may be uneven due to their shape. The through-hole plate 33 applies pressure to the outside of the round workpiece to ensure close contact between the workpieces during welding, which helps to reduce the formation of pores and improve the density and quality of the weld. At the same time, rotating the threaded rod 39 causes the limiting plate 310 to move up or down along the inside of the ring 38. The position of the limiting plate 310 is adjusted according to the distance requirements between the welding torch and the workpiece. As the welding torch pushes the slip ring 34 toward the workpiece, the limiting plate 310 restricts the position of the slip ring 34, and the slip ring 34 restricts the distance between the welding torch and the workpiece. This ensures that the distance between the welding torch and the workpiece is constant when welding, thus avoiding the problems of inconsistent weld width and shape, or even gaps or pores between welds caused by unstable distance between the welding torch and the workpiece.

[0031] Please see Figure 1-7 Based on the above embodiments, in another embodiment of the present invention, a foreign object prevention device 4 for cleaning foreign objects and impurities from the surface of the workpiece is provided at the through hole plate 33.

[0032] The foreign object prevention device 4 includes four arc rods 41, two serrated spade plates 42, four L-shaped spring rods 43, two rubber wheels 44, and two elliptical grooves 45. The two rubber wheels 44 are rotatably mounted on the middle of both sides of the through-hole plate 33. The top of the through-hole slide plate 9 has an opening for accommodating the rubber wheels 44. The two elliptical grooves 45 are respectively opened on the side of the two rubber wheels 44 away from the through-hole plate 33. The front and rear sides of the through-hole plate 33 have strip-shaped cavities. The four arc rods 41 are slidably mounted inside the two strip-shaped cavities, and two of the four arc rods 41 form a group. The two serrated spade plates 42 are respectively fixed to the two... One end of the arc rod 41 away from the through-hole plate 33, and four L-shaped spring rods 43 are respectively fixed on both sides of the two serrated scraper plates 42. The ends of the four L-shaped spring rods 43 away from the serrated scraper plates 42 are respectively slidably installed inside the two elliptical grooves 45. Through the above structure, the through-hole plate 33 drives the serrated scraper plates 42 to scrape off the impurities on the surface of the workpiece, thereby avoiding the problem that impurities affect the welding quality of the workpiece and cause insufficient weld strength. At the same time, through the above structure, the L-shaped spring rods 43 push the serrated scraper plates 42 to move intermittently, thereby improving the efficiency of the serrated scraper plates 42 in scraping off the impurities adhering to the surface of the workpiece.

[0033] The foreign object prevention device 4 also includes a bump wheel 46, an abutment rod 47, a U-shaped striking rod 48, and a U-shaped frame 49. The bump wheel 46 is fixed to the end of the rubber wheel 44 away from the through hole plate 33. The U-shaped frame 49 is fixed to the top of the through hole slide plate 9. The U-shaped striking rod 48 is slidably installed inside the opening of the through hole slide plate 9. A spring is provided between the U-shaped striking rod 48 and the U-shaped frame 49. The abutment rod 47 is fixed to the bottom of the inner wall of the U-shaped striking rod 48. A semi-circular bump is fixed to the outside of the bump wheel 46. The bottom of the abutment rod 47 is semi-circular. The semi-circular shape of the abutment rod 47 is located on the movement trajectory of the semi-circular bump of the bump wheel 46. Through the above structure, the U-shaped striking rod 48 strikes the L-shaped spring rod 43. The L-shaped spring rod 43 vibrates and drives the serrated scraper plate 42 to vibrate. The serrated scraper plate 42 shakes off the impurities adhering to it, thereby facilitating the continuous scraping of impurities off the surface of the workpiece by the serrated scraper plate 42.

[0034] In use, when the through-hole slide plate 9 rotates outside the cylinder 5, the through-hole slide plate 9 drives the through-hole plate 33 to rotate via the telescopic column 32. The through-hole plate 33 drives the serrated scraper 42 to scrape off impurities from the workpiece surface, thus preventing impurities from affecting the welding quality of the workpiece and causing insufficient weld strength. At the same time, after the through-hole plate 33 contacts the outside of the workpiece, the through-hole plate 33 drives the rubber wheel 44 to contact the outside of the workpiece. The through-hole plate 33 drives the rubber wheel 44 to rotate outside the workpiece. Under the action of friction between the rubber wheel 44 and the workpiece, the workpiece drives the rubber wheel 44 to rotate. The rubber wheel 44 drives the elliptical groove 45 on it to rotate. The elliptical groove 45 pushes the L-shaped spring rod 43 to move intermittently away from the center of the through-hole plate 33. The L-shaped spring rod 43 pushes the serrated scraper 42 to move intermittently. The movement of the saw blade 42 improves its efficiency in scraping off impurities adhering to the workpiece surface. Simultaneously, the rubber wheel 44 drives the cam wheel 46 to rotate. The semi-circular cam of the cam wheel 46 pushes the semi-circular shape of the contact rod 47, causing the contact rod 47 to move away from the cam wheel 46. The contact rod 47 drives the U-shaped striking rod 48 away from the L-shaped spring rod 43. The spring corresponding to the U-shaped striking rod 48 is compressed. When the semi-circular cam of the cam wheel 46 no longer pushes the semi-circular shape of the contact rod 47, the U-shaped striking rod 48 resets under the spring force of the spring corresponding to the U-shaped striking rod 48 and strikes the L-shaped spring rod 43. The L-shaped spring rod 43 vibrates and drives the saw blade 42 to vibrate. The saw blade 42 shakes off the impurities adhering to it, thus facilitating the continuous scraping of impurities off the workpiece surface by the saw blade 42.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A welding torch angle adjustment device, comprising a device body (1), wherein a lifting platform (2) is provided at the lower part of the device body (1), characterized in that: The device body (1) has round openings on both sides. Sliding columns (6) are fixed at the rear of both sides of the device body (1). Bidirectional screws (8) are rotatably installed at the front of both sides of the device body (1). Two arc-shaped clamps (7) are threaded to the outside of the two bidirectional screws (8). The end of the arc-shaped clamp (7) away from the bidirectional screw (8) is slidably installed on the outside of the sliding column (6). Cylinders (5) are fixed on both sides of the inner wall of the device body (1). A through-hole sliding plate (9) is slidably installed between the outer walls of the two cylinders (5). A through hole is opened at the top of the through-hole sliding plate (9). The top of the through-hole slide plate (9) is provided with a positioning device (3) for stabilizing the welding torch. The positioning device (3) includes two L-shaped groove rods (31), two telescopic columns (32), a through-hole mounting plate (33), a slip ring (34), two fixing blocks (35), two L-shaped inclined clamps (36), and two T-shaped columns (37). The two L-shaped groove rods (31) are respectively fixed on the top two sides of the through-hole slide plate (9). The slip ring (34) is slidably installed between the two L-shaped groove rods (31). The two telescopic columns (32) are respectively fixed on the top two sides of the through-hole slide plate (9). The bottom sides of the ring (34) and the telescopic column (32) penetrate the top of the through hole slide plate (9), the through hole plate (33) is fixed at the bottom of the two telescopic columns (32), the two fixing blocks (35) are respectively fixed at the front and rear sides of the top of the slip ring (34), the two T-shaped columns (37) penetrate the two fixing blocks (35) on the side away from each other, the two L-shaped inclined clamps (36) are respectively fixed on the side of the two T-shaped columns (37) close to each other, and a spring is provided between the L-shaped inclined clamps (36) and the fixing blocks (35); The positioning device (3) also includes a spiral frame (38), a threaded rod (39), and a limiting plate (310). The spiral frame (38) is fixed on one side of the L-shaped groove rod (31) away from the through hole slide plate (9). The threaded rod (39) is rotatably installed inside the spiral frame (38). The limiting plate (310) is threadedly connected to the outside of the threaded rod (39) and is slidably installed inside the spiral frame (38). An opening is provided on the outside of the L-shaped groove rod (31) on one side, and the limiting plate (310) extends into the opening of the L-shaped groove rod (31), and the limiting plate (310) is located below one side of the slip ring (34). The through-hole plate (33) is provided with a foreign object prevention device (4) for cleaning foreign objects and impurities from the surface of the workpiece. The foreign object prevention device (4) includes four arc rods (41), two serrated scrapers (42), four L-shaped spring rods (43), two rubber wheels (44), and two elliptical grooves (45). The two rubber wheels (44) are respectively rotatably installed on the middle of both sides of the through-hole plate (33). The top of the through-hole slide plate (9) is provided with an opening for accommodating the rubber wheels (44). The two elliptical grooves (45) are respectively opened on the two rubber wheels (44) away from the through-hole plate (33). On one side of the through hole plate (33), strip-shaped cavities are provided on the front and rear sides. The four arc rods (41) are slidably installed inside the two strip-shaped cavities respectively, and two of the four arc rods (41) form a group. The two serrated shovels (42) are fixed at the ends of the two groups of arc rods (41) away from the through hole plate (33) respectively. The four L-shaped spring rods (43) are fixed on both sides of the two serrated shovels (42) respectively. The ends of the four L-shaped spring rods (43) away from the serrated shovels (42) are slidably installed inside the two elliptical grooves (45) respectively.

2. A torch angle adjustment device according to claim 1, wherein: Both sides of the through-hole slide plate (9) are fixed with threaded blocks (10). The top of the threaded block (10) is threaded and connected with a threaded rod (11). Thirty-six insertion holes are opened on the outside of the two cylinders (5), and the included angle between two adjacent insertion holes is ten degrees. The threaded rod (11) is inserted into the insertion hole of the cylinder (5).

3. A torch angle adjustment device according to claim 1, wherein: The foreign object prevention device (4) also includes a bump wheel (46), an abutment rod (47), a U-shaped striking rod (48), and a U-shaped frame (49). The bump wheel (46) is fixed to the end of the rubber wheel (44) away from the through hole plate (33). The U-shaped frame (49) is fixed to the top of the through hole slide plate (9). The U-shaped striking rod (48) is slidably installed inside the opening of the through hole slide plate (9). A spring is provided between the U-shaped striking rod (48) and the U-shaped frame (49). The abutment rod (47) is fixed to the bottom of the inner wall of the U-shaped striking rod (48).

4. A torch angle adjustment device according to claim 3, wherein: The outside of the cam wheel (46) is fixed with a semi-circular cam, and the bottom of the abutting rod (47) is semi-circular. The semi-circular shape of the abutting rod (47) is located on the movement trajectory of the semi-circular cam of the cam wheel (46).

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