Semi-automatic submerged arc welding tooling

Abstract

The application discloses a kind of semi-automatic submerged-arc welding tool, it is related to the field of cavity casting welding technology, it includes welding assembly and pedestal, and welding assembly is welded to the cavity casting above pedestal, support block is equipped above the pedestal, and connecting assembly is equipped between support block and pedestal, connecting assembly supports support block, and drives support block to rotate, the both sides of support block upper end along the length direction of pedestal are all set with sliding slot, two sliding slots are all set along the length direction of pedestal, ring groove is set in the upper end of support block and communicated with two sliding slots, ring groove is located between two sliding slots and in the center position of support block, clamping assembly is equipped in the upper end of support block, clamping assembly is clamped to cavity casting, and drives cavity casting to rotate, reset component is equipped in ring groove, and reset component is used to make clamping assembly release the clamping of cavity casting.The application has the effect of improving the quality of cavity casting welding.

Description

Technical Field

[0001] This application relates to the field of welding technology for cavity castings, and in particular to a semi-automatic submerged arc welding fixture. Background Technology

[0002] Currently, due to the unique structure of hollow castings, the requirements for the distribution of welding temperature field and the consistency of weld formation are extremely high. During manual welding, the operator's experience is relied upon to control the welding torch angle, travel speed, and current parameters, which easily leads to defects such as uneven weld penetration, incomplete fusion, inclusions, and undercut. The quality pass rate is only 80%-90%. At the same time, the welding efficiency of a single weld pass by manual welding is about 0.5m / min. For complex hollow structural parts, the single welding cycle can be as long as 12 hours, which cannot meet the needs of mass production and will also prolong the cost of continuous preheating.

[0003] For related technology, please refer to Chinese patent application CN109227022B, which discloses a submerged arc welding horizontal welding position welding fixture and its clamping structure. The fixture includes a rectangular worktable, with downwardly extending legs at the four corners of the lower surface of the worktable, and adjustable supports at the lower ends of the legs. A web is raised on the upper surface of the worktable, perpendicular to the worktable, with the length direction of the web in the same direction as the length direction of the worktable, and the web is located in the middle of the worktable. At least two quick-clamping devices with the working direction facing the web are provided on one side of the web, and a flux container extending towards the other side of the web is connected along the upper edge of the web. The submerged arc welding horizontal welding position welding fixture and its clamping structure facilitate the quick assembly and disassembly of the welding test plate, facilitate the adjustment of the welding test plate's posture, ensure the consistency of the welding wire and the bevel height of the test piece, and ensure that the welding wire moves in a straight line in a consistent direction with the bevel of the test piece; the welding container is filled with flux and piled up above the welding position to ensure that the arc does not leak out during the horizontal welding process.

[0004] Regarding the aforementioned technologies, the clamping structure is only suitable for positioning test plates and cannot achieve adaptive clamping of hollow castings. Furthermore, the welding can only be performed on flat surfaces. Since the welding position of the hollow casting is inclined, if the welding fixture is used, the molten metal will flow along the weld joint, resulting in poor welding quality of the hollow casting. Summary of the Invention

[0005] To improve the welding quality of hollow castings, this application provides a semi-automatic submerged arc welding fixture.

[0006] This application provides a semi-automatic submerged arc welding fixture, which adopts the following technical solution: A semi-automatic submerged arc welding fixture includes a welding assembly and a base. The welding assembly welds a hollow casting above the base. A support block is provided above the base, and a connecting assembly is provided between the support block and the base. The connecting assembly supports the support block and drives the support block to rotate. Slide grooves are provided on both sides of the upper end of the support block along the length of the base. Both slide grooves are provided along the length of the base. An annular groove is provided on the upper end of the support block, which is connected to both slide grooves. The annular groove is located between the two slide grooves and at the center of the support block. A clamping assembly is provided on the upper end of the support block. The clamping assembly clamps the hollow casting and drives the hollow casting to rotate. A reset assembly is provided in the annular groove. The reset assembly is used to release the clamping assembly from clamping the hollow casting.

[0007] By adopting the above technical solution, the base and connecting components work together to support the support block, and the clamping component clamps the cavity casting. In the initial state, the clamping component moves along two sliding grooves. When the clamping component is inside the annular groove, the clamping component completes the clamping operation of the cavity casting. The clamping component continues to work, moving along the annular groove, which in turn drives the cavity casting to rotate. The welding component welds the cavity casting. When it is necessary to weld the inclined side of the cavity casting, the connecting component drives the cavity casting to rotate, making the cavity casting tilted. The welding component welds the side of the cavity casting. When the cavity casting is welded, the connecting component drives the cavity casting to reset, making the cavity casting horizontal. The reset component restricts the movement of the clamping component, allowing the clamping component to move within the sliding groove, thereby releasing the clamping operation of the cavity casting. This welding fixture reduces the probability of molten metal flowing along the weld joint when welding the side of the cavity casting, and improves the welding quality of the cavity casting.

[0008] Optionally, the connecting assembly includes two support rods, two hydraulic cylinders, and two sliders. Both sliders are located at the lower end of the support block and are slidably connected to the support block along the length of the base. The two sliders are radially distributed along the support block. Each slider corresponds to one hydraulic cylinder. Both hydraulic cylinders are vertically fixedly connected to the upper end of the base and located directly below the sliders. The output ends of both hydraulic cylinders are hinged to the sliders. Both support rods are vertically fixedly connected to both sides of the upper end of the base along the width direction and are located below the support block. The two support rods are radially distributed along the support block, and the upper ends of both support rods are hinged to the support block.

[0009] By adopting the above technical solution, the support rod and hydraulic cylinder work together to support the support block. When it is necessary to tilt the cavity casting, the two hydraulic cylinders extend and retract to different degrees. The hydraulic cylinders drive the slider to slide on the lower end face of the support block, thereby making the support block tilted, which improves the convenience of tilting the cavity casting.

[0010] Optionally, the clamping assembly includes a rotary motor, a first guide rod, two second guide rods, two clamping plates, a circular plate, and two connecting rods. The rotary motor is vertically fixedly connected to the lower end of the support block and located at the center of the annular groove. The output shaft of the rotary motor passes through the support block and is fixedly connected to the first guide rod. Both clamping plates are vertically arranged and correspond one-to-one with the sliding grooves. The lower end of the clamping plate is located inside the sliding groove. The clamping plate is slidably connected to the support block along the length of the sliding groove and the circumference of the annular groove. The second guide rods correspond one-to-one with the clamping plates and are located between the first guide rod and the clamping plate. One end of the second guide rod is hinged to the first guide rod, and the other end of the second guide rod is hinged to the clamping plate. The circular plate is located directly above the support block and is coaxial with the support block. The connecting rods correspond one-to-one with the clamping plates and are located between the circular plate and the clamping plate. One end of the connecting rod is fixedly connected to the clamping plate, and the end of the connecting rod away from the clamping plate is located inside the circular plate and is slidably connected to the circular plate along the length of the connecting rod. The connecting rod is radially arranged along the circular plate.

[0011] By adopting the above technical solution, during the clamping process of the cavity casting, the rotating motor drives the first guide rod to rotate. The first guide rod and the second guide rod cooperate to bring the two clamping plates closer to each other. The circular plate supports the cavity casting. As the clamping plate moves closer to the cavity casting, it slides in the groove, and the connecting rod moves inward into the circular plate. After the clamping plate clamps the cavity casting, the lower end of the clamping plate is located in the annular groove. The rotating motor continues to rotate, and the first guide rod and the second guide rod cooperate to move the clamping plate in the annular groove. The clamping plate and the connecting rod cooperate to drive the circular plate to rotate, thereby causing the cavity casting to rotate, which improves the convenience of clamping and rotating the cavity casting.

[0012] Optionally, the reset assembly includes two stops and two electric telescopic rods. The upper end of the support block has two reset slots that communicate with the annular groove. The reset slots are located below the annular groove and correspond one-to-one with the sliding groove. The reset slots are located at the connection between the sliding groove and the annular groove. The stops correspond one-to-one with the reset slots. The stops are located inside the reset slots and are slidably connected to the support block in the vertical direction. The electric telescopic rods are fixedly connected to the lower end of the support block in the vertical direction. The output end of the electric telescopic rods passes through the support block and is fixedly connected to the stops.

[0013] By adopting the above technical solution, when the hollow casting is welded and the lower end of the clamping plate is located at the connection between the slide groove and the annular groove, the electric telescopic rod drives the stop block to slide inside the reset groove, so that the stop block is located inside the annular groove and fits against the lower end of the clamping plate. The rotating motor rotates in the opposite direction. Due to the restriction of the stop block, the clamping plate will move along the slide groove, thereby releasing the clamping plate from the hollow casting and improving the convenience of separating the hollow casting from the clamping assembly.

[0014] Optionally, the base is provided with fixing rods on both sides along its length. The fixing rods are arranged vertically. When the cavity casting is located above the base, the fixing rods are located outside the cavity casting. The upper ends of the two fixing rods are fixed with the same annular air pipe. The side of the fixing rod away from the base is provided with a first air source component, which is connected to the annular air pipe. The side of the annular air pipe near the base is connected with several jet pipes. The jet pipes are arranged circumferentially along the annular air pipe, and an igniter is fixed at the upper end of the jet pipe.

[0015] By adopting the above technical solution, two fixed rods cooperate to support the annular gas pipe, the first gas source component delivers combustible gas into the annular gas pipe, the combustible gas is ejected through the jet pipe, and the igniter ignites the combustible gas to heat the cavity casting, which helps to reduce the probability of cracks in the cavity casting during the cooling process and improves the welding quality of the cavity casting.

[0016] Optionally, the welding assembly includes a support base, a drive motor, a rotating block, a lifting component, a moving component, a moving block, a material box, a feeding pipe, and a welding torch. The support base is located on one side of the base along its length and on the side of the annular air pipe away from the base. The rotating block is rotatably connected to the upper end of the support base. The drive motor is fixedly connected vertically to the lower end of the support base. The output shaft of the drive motor passes through the support base and is coaxially fixedly connected to the rotating block. The lifting component and the moving component are both located on the upper end of the rotating block. The moving component is arranged radially along the rotating block and is connected to the lifting component. The moving component drives the lifting component to move radially along the rotating block. The moving block is connected to the lifting component and drives the moving block to move vertically. The material box is fixedly connected to the upper end of the moving block on the side away from the lifting component. The feeding pipe is located below the material box and is connected to the material box. A valve is provided on the feeding pipe. The welding torch is fixedly connected to the moving block on the side away from the lifting component and is located between the moving block and the feeding pipe.

[0017] By adopting the above technical solution, the support base supports the rotating block, the lifting component drives the moving block to move upward, so that the feeding pipe and welding torch are aligned with the weld seam, the valve controls the opening and closing of the feeding pipe, during the welding process, the flux in the material box is transported to the weld seam through the feeding pipe, the moving component drives the moving block to move so that the welding torch welds the weld seam, when the weld seam is in an inclined state, the drive motor drives the rotating block to rotate, so that the moving block is in a parallel state with the weld seam, the moving component drives the moving block to move so that the welding torch welds the weld seam. This fixture can adjust and weld the welding components according to the position of the weld seam, which improves the convenience of welding the weld seam of the cavity casting.

[0018] Optionally, a support frame is provided vertically on the side of the annular air pipe away from the base. The upper end of the support frame is located above the annular air pipe. A connecting block is fixed on the side of the upper end of the support frame near the base. A scraper is slidably connected vertically at the lower end of the connecting block. Several support springs are provided between the scraper and the connecting block. In the natural state, the support springs push the scraper to move downward. A second air source component is fixed on both sides of the upper end of the support frame along the width direction. A cleaning pipe is connected to the side of the second air source component near the base.

[0019] By adopting the above technical solution, the support frame supports the connecting block, and the connecting block and the support spring cooperate to support the scraper. Under the action of the support spring, the scraper is always in contact with the surface of the cavity casting. During the rotation of the cavity casting, the scraper cleans the excess flux and welding blocks after welding. The second air source and the cleaning pipe cooperate to blow away the flux and welding blocks from the cavity casting, which improves the convenience of cleaning the surface of the cavity casting.

[0020] Optionally, a storage basket is fixedly provided at the lower end of the base. The size of the storage basket is adapted to the cavity casting, and a filter screen is fixedly provided inside the storage basket.

[0021] By adopting the above technical solution, the flux and welding blocks fall into the collection basket, and the filter screen separates the flux and welding blocks, improving the convenience of separating the flux and welding blocks.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The base and connecting assembly work together to support the support block. The clamping assembly clamps the cavity casting. In the initial state, the clamping assembly moves along two slides. When the clamping assembly is inside the annular groove, the clamping assembly completes the clamping operation of the cavity casting. The clamping assembly continues to work, moving along the annular groove, which in turn drives the cavity casting to rotate. The welding assembly welds the cavity casting. When it is necessary to weld the inclined side of the cavity casting, the connecting assembly drives the cavity casting to rotate, making the cavity casting tilted. The welding assembly welds the side of the cavity casting. When the cavity casting is welded, the connecting assembly drives the cavity casting to reset, making the cavity casting horizontal. The reset assembly restricts the movement of the clamping assembly, allowing the clamping assembly to move within the slide, thereby releasing the clamping operation of the cavity casting. This welding fixture reduces the probability of molten metal flowing along the weld joint when welding the side of the cavity casting, thus improving the welding quality of the cavity casting. 2. During the clamping process of the hollow casting, the rotating motor drives the first guide rod to rotate. The first guide rod and the second guide rod cooperate to bring the two clamping plates closer to each other. The circular plate supports the hollow casting. As the clamping plate moves closer to the hollow casting, it slides in the groove. The connecting rod moves inward into the circular plate. After the clamping plate clamps the hollow casting, the lower end of the clamping plate is located in the annular groove. The rotating motor continues to rotate, and the first guide rod and the second guide rod cooperate to move the clamping plate in the annular groove. The clamping plate and the connecting rod cooperate to drive the circular plate to rotate, thereby causing the hollow casting to rotate, which improves the convenience of clamping and rotating the hollow casting. 3. When the hollow casting is welded and the lower end of the clamping plate is located at the connection between the slide groove and the annular groove, the electric telescopic rod drives the stop block to slide inside the reset groove, so that the stop block is located inside the annular groove and fits against the lower end of the clamping plate. The rotating motor rotates in the opposite direction. Due to the restriction of the stop block, the clamping plate will move along the slide groove, thereby releasing the clamping plate from the hollow casting and improving the convenience of separating the hollow casting from the clamping assembly. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a semi-automatic submerged arc welding fixture.

[0024] Figure 2 This is a schematic diagram of the clamping component structure.

[0025] Figure 3 This is a schematic diagram of the welding assembly structure.

[0026] Figure 4 This is a schematic diagram of the connecting component structure.

[0027] Figure 5 This is a schematic diagram of the internal structure of the connecting block.

[0028] Figure 6 This is a schematic diagram of the reset component structure.

[0029] Explanation of reference numerals in the attached drawings: 1. Base; 11. Support block; 12. Slide groove; 13. Annular groove; 2. Welding assembly; 21. Support seat; 22. Drive motor; 23. Rotating block; 24. Lifting component; 25. Moving component; 26. Moving block; 27. Material box; 28. Feeding pipe; 281. Valve; 29. ​​Welding torch; 3. Connecting assembly; 31. Support rod; 32. Hydraulic cylinder; 33. Slider; 4. Clamping assembly; 41. Rotating motor; 42. First guide 43. Guide rod; 44. Clamping plate; 45. Circular plate; 46. Connecting rod; 5. Reset assembly; 51. Stop block; 52. Electric telescopic rod; 53. Reset groove; 61. Fixing rod; 62. Annular air pipe; 63. First air source component; 64. Jet pipe; 65. Ignition device; 71. Support frame; 72. Connecting block; 73. Support spring; 74. Scraper; 75. Second air source component; 76. Cleaning pipe; 77. Storage basket; 78. Filter screen. Detailed Implementation

[0030] The present application will be further described in detail below with reference to all the accompanying drawings.

[0031] This application discloses a semi-automatic submerged arc welding fixture. Example

[0032] Reference Figure 1 A semi-automatic submerged arc welding fixture includes a welding assembly 2 and a base 1. The welding assembly 2 welds a hollow casting above the base 1. A support block 11 is provided above the base 1, and a connecting assembly 3 is provided between the support block 11 and the base 1. The connecting assembly 3 supports the support block 11 and drives the support block 11 to rotate.

[0033] Reference Figure 1 and Figure 2 The upper end of the support block 11 is provided with two sliding grooves 12 on both sides along the length of the base 1. The two sliding grooves 12 are both arranged along the length of the base 1. The upper end of the support block 11 is provided with two annular grooves 13 that are connected to the sliding grooves 12. The annular grooves 13 are located between the two sliding grooves 12 and at the center of the support block 11. The upper end of the support block 11 is provided with a clamping assembly 4. The clamping assembly 4 clamps the cavity casting and drives the cavity casting to rotate.

[0034] Reference Figure 1 and Figure 2The clamping assembly 4 includes a rotary motor 41, a first guide rod 42, two second guide rods 43, two clamping plates 44, a circular plate 45, and two connecting rods 46. The rotary motor 41 is vertically fixedly connected to the lower end of the support block 11 and located at the center of the annular groove 13. The output shaft of the rotary motor 41 passes through the support block 11 and is fixedly connected to the first guide rod 42. The rotary motor 41 drives the first guide rod 42 to rotate. Both clamping plates 44 are vertically arranged and correspond one-to-one with the slide grooves 12. The lower end of the clamping plate 44 is located inside the slide groove 12. The clamping plate 44 is slidably connected to the support block 11 along the length of the slide groove 12 and the circumference of the annular groove 13. The second guide rod 43 corresponds one-to-one with the clamping plate 44. The second guide rod 43 is located between the first guide rod 42 and the clamping plate 44. One end of the second guide rod 43 is hinged to the first guide rod 42, and the other end of the second guide rod 43 is hinged to the clamping plate 44. During the clamping process of the cavity casting, the rotating motor 41 drives the first guide rod 42 to rotate. The first guide rod 42 and the second guide rod 43 cooperate to bring the two clamping plates 44 closer to each other.

[0035] Reference Figure 2 The circular plate 45 is located directly above the support block 11 and is coaxial with the support block 11. The circular plate 45 supports the cavity casting. The connecting rod 46 corresponds one-to-one with the clamping plate 44. The connecting rod 46 is located between the circular plate 45 and the clamping plate 44. One end of the connecting rod 46 is fixedly connected to the clamping plate 44, and the end of the connecting rod 46 away from the clamping plate 44 is located inside the circular plate 45 and is slidably connected to the circular plate 45 along the length of the connecting rod 46. The connecting rod 46 is arranged radially along the circular plate 45. As the clamping plate 44 approaches the cavity casting, it slides in the slide groove 12, and the connecting rod 46 moves into the circular plate 45. After the clamping plate 44 clamps the cavity casting, the lower end of the clamping plate 44 is located in the annular groove 13. The rotating motor 41 continues to rotate, and the first guide rod 42 and the second guide rod 43 cooperate to move the clamping plate 44 in the annular groove 13. The clamping plate 44 and the connecting rod 46 cooperate to drive the circular plate 45 to rotate, thereby causing the cavity casting to rotate.

[0036] Reference Figure 1The base 1 has fixing rods 61 on both sides along its length. The fixing rods 61 are vertically arranged. When the cavity casting is above the base 1, the fixing rods 61 are located outside the cavity casting. The upper ends of the two fixing rods 61 are fixed with the same annular gas pipe 62. The two fixing rods 61 cooperate to support the annular gas pipe 62. The side of the fixing rods 61 away from the base 1 is provided with a first gas source component 63. The first gas source component 63 is connected to the annular gas pipe 62 and supplies combustible gas into the annular gas pipe 62. The side of the annular gas pipe 62 near the base 1 is connected to multiple jet pipes 64. The jet pipes 64 are arranged circumferentially along the annular gas pipe 62. The upper end of the jet pipe 64 is fixed with an igniter 65. The combustible gas is ejected through the jet pipe 64. The igniter 65 ignites the combustible gas and heats the cavity casting, which helps to reduce the probability of cracks in the cavity casting during the cooling process and improves the welding quality of the cavity casting.

[0037] Reference Figure 1 and Figure 3 The welding assembly 2 includes a support base 21, a drive motor 22, a rotating block 23, a lifting component 24, a moving component 25, a moving block 26, a material box 27, a feeding pipe 28, and a welding torch 29. The support base 21 is located on one side of the base 1 along its length and on the side of the annular air pipe 62 away from the base 1. The rotating block 23 is rotatably connected to the upper end of the support base 21, and the support base 21 supports the rotating block 23. The drive motor 22 is vertically fixedly connected to the lower end of the support base 21. The output shaft of the drive motor 22 passes through the support base 21 and is coaxially fixedly connected to the rotating block 23, driving the rotating block 23 to rotate. The lifting component 24 and the moving component 25 are both located on the upper end of the rotating block 23. The moving component 25 adopts a combination structure of a motor and a lead screw, while the lifting component 24 adopts a combination structure of a vertical plate, a motor, and a lead screw. The moving component 25 is arranged radially along the rotating block 23 and is connected to the lifting component 24, driving the lifting component 24 to move radially along the rotating block 23.

[0038] Reference Figure 3The movable block 26 is connected to the lifting component 24. The lifting component 24 drives the movable block 26 to move vertically. The material box 27 is fixedly connected to the upper end of the movable block 26 on the side away from the lifting component 24. The feeding pipe 28 is located below the material box 27 and is connected to the material box 27. A valve 281 is provided on the feeding pipe 28. The welding torch 29 is fixedly connected to the side of the movable block 26 away from the lifting component 24. The welding torch 29 is located between the movable block 26 and the feeding pipe 28. The lifting component 24 drives the movable block 26 to move upward. Align the feed pipe 28 and welding torch 29 with the weld seam. Valve 281 controls the opening and closing of the feed pipe 28. During the welding process, the flux in the material box 27 is transported to the weld seam through the feed pipe 28. The moving part 25 drives the moving block 26 to move so that the welding torch 29 can weld the weld seam. When the weld seam is in an inclined state, the drive motor 22 drives the rotating block 23 to rotate so that the moving block 26 is in a parallel state with the weld seam. The moving part 25 drives the moving block 26 to move so that the welding torch 29 can weld the weld seam.

[0039] Reference Figure 1 and Figure 4 The connecting assembly 3 includes two support rods 31, two hydraulic cylinders 32, and two sliders 33. The two sliders 33 are located at the lower end of the support block 11 and are slidably connected to the support block 11 along the length of the base 1. The two sliders 33 are radially distributed along the support block 11. The sliders 33 correspond one-to-one with the hydraulic cylinders 32. The two hydraulic cylinders 32 are fixedly connected to the upper end of the base 1 vertically and are located directly below the sliders 33. The output ends of the two hydraulic cylinders 32 are hinged to the sliders 33. When it is necessary to tilt the cavity casting, the two hydraulic cylinders 32 extend and retract to different degrees. The hydraulic cylinders 32 drive the sliders 33 to slide on the lower end face of the support block 11, thereby making the support block 11 tilted. Both support rods 31 are vertically fixed to both sides of the upper end of the base 1 along the width direction and are located below the support block 11. The two support rods 31 are radially distributed along the support block 11, and the upper ends of the two support rods 31 are hinged to the support block 11. The two support rods 31 cooperate to further support the support block 11 and improve the stability of the support block 11 during the tilting process.

[0040] Reference Figure 1 and Figure 5A support frame 71 is vertically provided on the side of the annular air pipe 62 away from the base 1. The upper end of the support frame 71 is located above the annular air pipe 62. A connecting block 72 is fixedly provided on the side of the upper end of the support frame 71 near the base 1. A scraper 74 is slidably connected to the lower end of the connecting block 72 vertically. Multiple support springs 73 are provided between the scraper 74 and the connecting block 72. In the natural state, the support springs 73 push the scraper 74 to move downward. The support frame 71 supports the connecting block 72. The connecting block 72 and the support springs 73 cooperate to support the scraper 74. Under the action of the support springs 73, the scraper 74 is always in contact with the surface of the cavity casting. During the rotation of the cavity casting, the scraper 74 cleans the excess flux and welding blocks after welding. The upper end of the support frame 71 is fixed with a second air source component 75 on both sides along the width direction. The side of the second air source component 75 near the base 1 is connected to a cleaning pipe 76. The second air source component 75 and the cleaning pipe 76 work together to blow away the flux and welding blocks from the cavity casting, which improves the convenience of cleaning the surface of the cavity casting.

[0041] Reference Figure 1 A storage basket 77 is fixedly provided at the lower end of the base 1. The size of the storage basket 77 is adapted to the cavity casting. A filter screen 78 is fixedly provided inside the storage basket 77. The flux and welding blocks fall into the storage basket 77. The filter screen 78 separates the flux and welding blocks, which improves the convenience of separating the flux and welding blocks.

[0042] Reference Figure 4 and Figure 6 A reset assembly 5 is provided in the annular groove 13. The reset assembly 5 restricts the movement of the clamping assembly 4, allowing the clamping assembly 4 to move within the sliding groove 12, thereby releasing the clamping operation on the cavity casting. The reset assembly 5 includes two stops 51 and two electric telescopic rods 52. Two reset grooves 53 communicating with the annular groove 13 are opened at the upper end of the support block 11. The reset grooves 53 are located below the annular groove 13 and correspond one-to-one with the sliding grooves 12. The reset grooves 53 are located at the connection between the sliding grooves 12 and the annular groove 13. The stops 51 correspond one-to-one with the reset grooves 53. The stops 51 are located within the reset grooves 53 and are slidably connected to the support block 11 vertically. The electric telescopic rods 52 are fixedly connected vertically to the lower end of the support block 11. The output end of the electric telescopic rods 52 passes through... The support block 11 is fixedly connected to the baffle. When the cavity casting is welded and the lower end of the clamping plate 44 is located at the connection between the slide groove 12 and the annular groove 13, the electric telescopic rod 52 drives the stop block 51 to slide inside the reset groove 53, so that the stop block 51 is located inside the annular groove 13 and fits against the lower end of the clamping plate 44. The rotating motor 41 rotates in the opposite direction. Due to the restriction of the stop block 51, the clamping plate 44 will move along the slide groove 12, thereby releasing the clamping plate 44 from the cavity casting and improving the convenience of separating the cavity casting from the clamping assembly 4.

[0043] The implementation principle of a semi-automatic submerged arc welding fixture in this application embodiment is as follows: A hollow casting is placed above a circular plate 45. During the clamping process of the hollow casting, a rotating motor 41 drives a first guide rod 42 to rotate. The first guide rod 42 and a second guide rod 43 cooperate to bring two clamping plates 44 closer together. As the clamping plates 44 approach the hollow casting, they slide within a groove 12, and a connecting rod 46 moves inward into the circular plate 45. After the clamping plates 44 clamp the hollow casting, the lower end of the clamping plates 44 is located within an annular groove 13. The rotating motor 41 continues to rotate, and the first guide rod 42... 2. The second guide rod 43 cooperates to move the clamping plate 44 within the annular groove 13. The clamping plate 44 and the connecting rod 46 cooperate to drive the circular plate 45 to rotate, thereby causing the cavity casting to rotate. The welding assembly 2 welds the cavity casting. When it is necessary to weld the inclined edge of the side of the cavity casting, the two hydraulic cylinders 32 extend and retract to different degrees. The hydraulic cylinders 32 drive the slider 33 to slide on the lower end face of the support block 11, thereby causing the support block 11 to be in an inclined state. This welding fixture reduces the probability of molten metal flowing along the weld joint when welding the side of the cavity casting, and improves the welding quality of the cavity casting.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A semi-automatic submerged arc welding fixture, comprising a welding assembly (2) and a base (1), wherein the welding assembly (2) welds a hollow casting above the base (1), characterized in that: A support block (11) is provided above the base (1). A connecting component (3) is provided between the support block (11) and the base (1). The connecting component (3) supports the support block (11) and drives the support block (11) to rotate. Slide grooves (12) are provided on both sides of the upper end of the support block (1) along the length direction of the base (1). Both slide grooves (12) are provided along the length direction of the base (1). An annular groove (13) is provided at the upper end of the support block (11) and is connected to both slide grooves (12). The annular groove (13) is located between the two slide grooves (12) and at the center of the support block (11). A clamping component (4) is provided at the upper end of the support block (11). The clamping component (4) clamps the cavity casting and drives the cavity casting to rotate. A reset component (5) is provided in the annular groove (13). The reset component (5) is used to release the clamping component (4) from clamping the cavity casting.

2. The semi-automatic submerged arc welding fixture according to claim 1, characterized in that: The connecting assembly (3) includes two support rods (31), two hydraulic cylinders (32) and two sliders (33). The two sliders (33) are located at the lower end of the support block (11) and are slidably connected to the support block (11) along the length direction of the base (1). The two sliders (33) are radially distributed along the support block (11). The sliders (33) correspond one-to-one with the hydraulic cylinders (32). The two hydraulic cylinders (32) are vertically fixedly connected to the upper end of the base (1) and located directly below the sliders (33). The output ends of the two hydraulic cylinders (32) are hinged to the sliders (33). The two support rods (31) are vertically fixedly connected to both sides of the upper end of the base (1) along the width direction and are located below the support block (11). The two support rods (31) are radially distributed along the support block (11). The upper ends of the two support rods (31) are hinged to the support block (11).

3. The semi-automatic submerged arc welding fixture according to claim 1, characterized in that: The clamping assembly (4) includes a rotary motor (41), a first guide rod (42), two second guide rods (43), two clamping plates (44), a circular plate (45), and two connecting rods (46). The rotary motor (41) is vertically fixedly connected to the lower end of the support block (11) and located at the center of the annular groove (13). The output shaft of the rotary motor (41) passes through the support block (11) and is fixedly connected to the first guide rod (42). The two clamping plates (44) are both vertically arranged and correspond one-to-one with the slide groove (12). The lower end of the clamping plate (44) is located in the slide groove (12). The clamping plate (44) is slidably connected to the support block (11) along the length of the slide groove (12) and the circumference of the annular groove (13). The second guide rods (43) are connected one-to-one with the clamping plates (44). Correspondingly, the second guide rod (43) is located between the first guide rod (42) and the clamping plate (44). One end of the second guide rod (43) is hinged to the first guide rod (42), and the other end of the second guide rod (43) is hinged to the clamping plate (44). The circular plate (45) is located directly above the support block (11) and is coaxial with the support block (11). The connecting rod (46) corresponds one-to-one with the clamping plate (44). The connecting rod (46) is located between the circular plate (45) and the clamping plate (44). One end of the connecting rod (46) is fixedly connected to the clamping plate (44). The end of the connecting rod (46) away from the clamping plate (44) is located inside the circular plate (45) and is slidably connected to the circular plate (45) along the length direction of the connecting rod (46). The connecting rod (46) is arranged radially along the circular plate (45).

4. The semi-automatic submerged arc welding fixture according to claim 1, characterized in that: The reset assembly (5) includes two stops (51) and two electric telescopic rods (52). The upper end of the support block (11) has two reset grooves (53) that communicate with the annular groove (13). The reset grooves (53) are located below the annular groove (13) and correspond one-to-one with the sliding groove (12). The reset grooves (53) are located at the connection between the sliding groove (12) and the annular groove (13). The stops (51) correspond one-to-one with the reset grooves (53). The stops (51) are located inside the reset grooves (53) and are slidably connected to the support block (11) in the vertical direction. The electric telescopic rods (52) are fixedly connected to the lower end of the support block (11) in the vertical direction. The output end of the electric telescopic rods (52) passes through the support block (11) and is fixedly connected to the stops (51).

5. The semi-automatic submerged arc welding fixture according to claim 1, characterized in that: The base (1) has fixing rods (61) on both sides along its length. The fixing rods (61) are arranged vertically. When the cavity casting is above the base (1), the fixing rods (61) are located outside the cavity casting. The upper ends of the two fixing rods (61) are fixed with the same annular air pipe (62). The side of the fixing rod (61) away from the base (1) is provided with a first air source component (63). The first air source component (63) is connected to the annular air pipe (62). The side of the annular air pipe (62) close to the base (1) is connected with several jet pipes (64). The jet pipes (64) are arranged around the annular air pipe (62). The upper end of the jet pipe (64) is fixed with an igniter (65).

6. A semi-automatic submerged arc welding fixture according to claim 5, characterized in that: The welding assembly (2) includes a support base (21), a drive motor (22), a rotating block (23), a lifting component (24), a moving component (25), a moving block (26), a material box (27), a feeding pipe (28), and a welding torch (29). The support base (21) is located on one side of the base (1) along its length and on the side of the annular air pipe (62) away from the base (1). The rotating block (23) is rotatably connected to the upper end of the support base (21). The drive motor (22) is fixedly connected vertically to the lower end of the support base (21). The output shaft of the drive motor (22) passes through the support base (21) and is coaxially fixedly connected to the rotating block (23). The lifting component (24) and the moving component (25) are both located on the upper end of the rotating block (23). The moving part (25) is arranged radially along the rotating block (23). The moving part (25) is connected to the lifting part (24). The moving part (25) drives the lifting part (24) to move radially along the rotating block (23). The moving block (26) is connected to the lifting part (24). The lifting part (24) drives the moving block (26) to move vertically. The material box (27) is fixedly connected to the upper end of the moving block (26) on the side away from the lifting part (24). The feeding pipe (28) is located below the material box (27) and is connected to the material box (27). The feeding pipe (28) is equipped with a valve (281). The welding gun (29) is fixedly connected to the side of the moving block (26) away from the lifting part (24). The welding gun (29) is located between the moving block (26) and the feeding pipe (28).

7. A semi-automatic submerged arc welding fixture according to claim 5, characterized in that: The annular air pipe (62) is provided with a support frame (71) on the side away from the base (1) in a vertical direction. The upper end of the support frame (71) is located above the annular air pipe (62). A connecting block (72) is fixedly provided on the side of the upper end of the support frame (71) near the base (1). A scraper (74) is slidably connected to the lower end of the connecting block (72) in a vertical direction. Several support springs (73) are provided between the scraper (74) and the connecting block (72). In the natural state, the support springs (73) push the scraper (74) to move downward. A second air source component (75) is fixedly provided on both sides of the upper end of the support frame (71) in the width direction. A cleaning pipe (76) is connected to the side of the second air source component (75) near the base (1).

8. The semi-automatic submerged arc welding fixture according to claim 1, characterized in that: The lower end of the base (1) is fixedly provided with a storage basket (77), the size of which is adapted to the cavity casting, and a filter screen (78) is fixedly provided inside the storage basket (77).

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