Low-spatter short-circuit gas shielded welding apparatus

Abstract

The utility model discloses a kind of low-splashing short-circuit gas shielded welding equipment, it is related to welding equipment technical field, including pedestal, the top rear side middle of the pedestal is fixedly installed with gas shielded welding machine, the top middle of the pedestal is fixedly installed with support rod. The utility model adopts the above structure, during its application, it can greatly reduce operation difficulty, improve work efficiency, clamping mechanism is through the synergic effect of third motor, screw rod and sliding block, can realize the automatic clamping of pipe fitting, and can be adapted to pipe fitting of different diameters, without manual adjustment clamping size, adjusting mechanism can be flexibly switched the lateral movement and rotation mode of pipe fitting, realize the quick butt joint and overall welding of pipe fitting, entire process does not need manual intervention to adjust pipe fitting position, greatly reduce the labor intensity of welder, plus brake motor to the stable locking of component position, reduce operation error, effectively improve welding efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of welding equipment, and specifically relates to a low-spatter short-circuit gas shielded welding equipment. Background Technology

[0002] Welding, as a manufacturing process that joins workpieces by heating, pressurizing, or both, and supplementing with filler materials, plays an important role in the processing of metals and thermoplastic materials. Fusion welding technology involves heating the workpiece interface to a molten state to form a molten pool, and then forming a weld after the molten pool cools. However, if the molten pool is in direct contact with the atmosphere during the process, it is prone to defects such as porosity and cracks due to oxidation and gas intrusion. Therefore, protective measures such as gas protection and the addition of deoxidizers are required to ensure the quality of the weld.

[0003] Currently, welding operations largely rely on manual labor, resulting in high labor intensity for welders. This not only affects work efficiency but also makes it difficult to guarantee the stability of welding quality. In actual welding processes, existing welding fixtures often cannot automatically adjust the rotation angle or lateral movement of the workpiece after clamping and positioning it, making it difficult to quickly achieve precise docking of the workpiece. At the same time, because the workpiece cannot be rotated, when full welding is required, the workpiece position must be repeatedly adjusted manually, which is cumbersome and cannot meet the needs of efficient and automated welding. Targeted improvements are still needed. Utility Model Content

[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a low-spatter short-circuit gas shielded welding device to solve the problems raised in the background art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A low-spatter short-circuit gas shielded welding device includes a base, a gas shielded welding machine fixedly installed at the middle of the rear top of the base, a support rod fixedly installed at the middle of the top of the base, an annular cover fixedly installed at the top of the support rod, inlets and outlets on both sides of the annular cover, a gas shielded welding torch fixedly installed at the middle of the rear side of the annular cover, the front end of the gas shielded welding torch being located inside the annular cover, the input end of the gas shielded welding torch being connected to the gas shielded welding machine, clamping mechanisms fixedly installed at both sides of the top of the base, and adjusting mechanisms fixedly installed at the top of the base between the clamping mechanisms and the inner sides of the support rod, the inner side of the clamping mechanism clamping the pipe to be welded, the top of the adjusting mechanism being fitted and connected to the bottom of the pipe to be welded, and the inner end of the pipe to be welded extending into the interior of the annular cover through the inlet and outlet.

[0007] The adjustment mechanism includes a frame, which is fixedly installed on the top of the base and located between the support rod and the clamping mechanism. An electric push rod is fixedly installed inside the frame. A first motor is fixedly installed through the frame at the output end of the electric push rod. A drive assembly is fixedly installed at the output end of the first motor. The top of the drive assembly is fitted and connected to the bottom of the pipe to be welded.

[0008] As a preferred technical solution, the drive assembly includes a concave frame, which is fixedly installed on the top output end of the first motor. A second motor is fixedly installed on the front side of the concave frame, and a drive wheel is fixedly installed through the concave frame at the output end of the second motor. The top of the drive wheel is fitted and connected to the bottom of the pipe to be welded.

[0009] As a preferred technical solution, the clamping mechanism includes a fixing plate, which is fixedly installed on both sides of the top of the base. A rail frame is fixedly installed on the rear side of the top of the fixing plate. A third motor is fixedly installed on the top of the rail frame. A lead screw is fixedly installed through the rail frame at the output end of the third motor. The lead screw is rotatably connected to the inside of the rail frame. The two ends of the lead screw have opposite thread directions. Sliding blocks are threaded to both ends of the lead screw. The sliding blocks are slidably connected to the two ends inside the rail frame. A clamping module is fixedly installed on the front side of the sliding blocks.

[0010] As a preferred technical solution, the clamping module includes a connecting arm, which is fixedly installed on the front side of the sliding block, and a clamping plate is fixedly installed on the inner side of the front end of the connecting arm.

[0011] As a preferred technical solution, the clamping plate has a clamping groove on its inner side, the overall cross-sectional shape of the clamping groove is V-shaped, and the inner two sides of the clamping groove are rotatably connected with balls at equal intervals.

[0012] As a preferred technical solution, an observation window is provided on the front of the annular cover, and a tempered glass plate is fixedly connected inside the observation window.

[0013] As a preferred technical solution, mounting holes are provided at the four corners of the top of the base, the mounting holes penetrate the base, and the mounting holes are countersunk holes.

[0014] In summary, the present invention has the following main advantages:

[0015] First, this equipment can significantly improve welding quality during application. During use, its annular cover can not only effectively shield the spatter generated during welding, reducing the adverse effects on the surrounding working environment and operators, but also slow down the dissipation rate of the shielding gas and improve its accumulation efficiency in the welding area, thereby reducing the probability of air intrusion into the welding area and greatly reducing the risk of defects such as weld oxidation and porosity caused by gases such as oxygen and nitrogen. At the same time, the gas shielded welding machine can provide a stable power output and shielding gas supply. Combined with the precise operation of the gas shielded welding torch in the annular cover, it ensures stable arc combustion and further improves the stability of weld quality.

[0016] Secondly, during the application of this equipment, it can significantly reduce the difficulty of operation and improve work efficiency. The clamping mechanism can automatically clamp the pipe fittings through the coordinated action of the third motor, lead screw and sliding block, and can adapt to pipe fittings of different diameters. There is no need for manual adjustment of the clamping size. The adjustment mechanism can flexibly switch the lateral movement and rotation mode of the pipe fittings to achieve rapid docking and full welding of the pipe fittings. The whole process does not require manual intervention to adjust the position of the pipe fittings, which greatly reduces the labor intensity of welders. In addition, the brake motor stabilizes and locks the position of the components, reducing operational errors and effectively improving welding efficiency.

[0017] Third, this equipment has a wide range of applications and high safety. The V-shaped clamping groove and ball bearing design of the clamping mechanism ensures the stability of clamping pipes of different diameters without affecting the movement adjustment of the pipes, making it adaptable to various specifications of pipes. The tempered glass observation window on the front of the annular cover allows operators to monitor the welding process in real time and effectively blocks welding spatter and high-temperature radiation, providing safety for operators. The overall structure realizes integrated operation of pipe clamping, docking, rotation and welding, reducing manual intervention, meeting different welding needs and significantly improving the safety of operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the clamping mechanism structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the adjustment mechanism of this utility model.

[0022] Reference numerals: 1. Base; 2. Gas shielded welding machine; 3. Support rod; 4. Annular cover; 5. Inlet / outlet; 6. Gas shielded welding torch; 7. Clamping mechanism; 71. Fixing plate; 72. Rail frame; 73. Third motor; 74. Lead screw; 75. Sliding block; 76. Clamping module; 761. Connecting arm; 762. Clamping plate; 763. Clamping groove; 764. Ball bearing; 8. Adjustment mechanism; 81. Frame; 82. Electric push rod; 83. First motor; 84. Drive assembly; 841. Concave frame; 842. Second motor; 843. Drive wheel; 9. Pipe to be welded; 10. Observation window; 11. Mounting hole. Detailed Implementation

[0023] Example

[0024] refer to Figures 1 to 4 This embodiment of a low-splash short-circuit gas shielded welding device includes a base 1, a gas shielded welding machine 2 fixedly installed at the middle of the rear side of the top of the base 1, a support rod 3 fixedly installed at the middle of the top of the base 1, an annular cover 4 fixedly installed at the top of the support rod 3, inlets and outlets 5 on both sides of the annular cover 4, a gas shielded welding gun 6 fixedly installed at the middle of the rear side of the annular cover 4, the front end of the gas shielded welding gun 6 being located inside the annular cover 4, the input end of the gas shielded welding gun 6 being connected to the gas shielded welding machine 2, clamping mechanisms 7 fixedly installed at both sides of the top of the base 1, and adjusting mechanisms 8 fixedly installed between the clamping mechanisms 7 and the inner side of the support rod 3 at the top of the base 1, the inner side of the clamping mechanism 7 clamping the pipe to be welded 9, the top of the adjusting mechanism 8 being fitted and connected to the bottom of the pipe to be welded 9, and the inner end of the pipe to be welded 9 extending into the interior of the annular cover 4 through the inlet and outlet 5;

[0025] The adjusting mechanism 8 includes a frame 81, which is fixedly installed on the top of the base 1 and located between the support rod 3 and the clamping mechanism 7. An electric push rod 82 is fixedly installed inside the frame 81. A first motor 83 is fixedly installed through the frame 81 at the output end of the electric push rod 82. A drive assembly 84 is fixedly installed at the output end of the first motor 83. The top of the drive assembly 84 is fitted and connected to the bottom of the pipe fitting 9 to be welded. During use, the pipe fitting 9 is placed on the top of the base 1, and the clamping mechanisms 7 on both sides clamp the two ends of the pipe fitting. The inner end of the pipe fitting passes through the sides of the annular cover 4. The inlet and outlet 5 extend into its interior, into the adjustment mechanism 8, where the frame 81 is fixed on the base 1. The electric push rod 82 pushes the first motor 83 and the drive assembly 84 to rise, so that the top of the drive assembly 84 fits against the bottom of the pipe. According to the welding requirements, the first motor 83 drives the drive assembly 84 to rotate to adjust the driving direction. The operation of the drive assembly 84 drives the pipe to move or rotate, realizing the docking or full welding preparation. The gas shielded welding machine 2 supplies gas and electricity to the gas shielded welding gun 6 inside the annular cover 4 through the pipeline. The gas shielded welding gun 6 welds the pipe. The support rod 3 supports the annular cover 4, forming a relatively concentrated welding space.

[0026] refer to Figures 1-2 and Figure 4 The drive assembly 84 includes a concave frame 841, which is fixedly installed on the top output end of the first motor 83. A second motor 842 is fixedly installed on the front side of the concave frame 841. The output end of the second motor 842 passes through the concave frame 841 and is fixedly installed with a drive wheel 843. The top of the drive wheel 843 is in contact with the bottom of the pipe fitting 9 to be welded. The clamping mechanism 7 includes a fixing plate 71, which is fixedly installed on both sides of the top of the base 1. A rail frame 72 is fixedly installed on the rear side of the top of the fixing plate 71. A third motor 73 is fixedly installed on the top of the rail frame 72. A lead screw 74 is fixedly installed through the rail frame 72 at the output end of the third motor 73. The lead screw 74 is rotatably connected to the inside of the rail frame 72. The two ends of the lead screw 74 have opposite threads. Both ends of the lead screw 74 are threadedly connected with sliding blocks 75. The sliding blocks 75 are slidably connected to the two ends inside the rail frame 72. A clamping module is fixedly installed on the front side of the sliding blocks 75. 76. During the application of this device, when its drive component 84 is working, the concave frame 841 is fixed to the output end of the first motor 83 and adjusts its direction with the rotation of the first motor 83. The second motor 842 is fixed to the front side of the concave frame 841, and its output end drives the drive wheel 843 to rotate. The top of the drive wheel 843 is in contact with the bottom of the pipe to be welded 9, and the pipe is driven to move by friction. When the drive wheel 843 is parallel to the pipe, it drives the pipe to move laterally to achieve docking; when it is perpendicular, it drives the pipe to rotate to meet full welding. In the clamping mechanism 7, the fixing plate 71 is fixed to both sides of the base 1, and the rail frame 72 is installed on the top rear side of the fixing plate 71. The third motor 73 drives the lead screw 74 to rotate in the rail frame 72. Because the threads at both ends of the lead screw 74 rotate in opposite directions, the sliding blocks 75 at both ends slide in the opposite direction along the rail frame 72, driving the clamping module 76 to move synchronously, realizing the clamping and fixing of pipes of different diameters, and ensuring the stability of the position of the pipe during welding and adjustment.

[0027] refer to Figures 1-3The clamping module 76 includes a connecting arm 761, which is fixedly mounted on the front of the sliding block 75. A clamping plate 762 is fixedly mounted on the inner side of the front end of the connecting arm 761. A clamping groove 763 is formed on the inner side of the clamping plate 762. The overall cross-sectional shape of the clamping groove 763 is V-shaped. Roller balls 764 are rotatably connected to both sides of the inner side of the clamping groove 763 at equal intervals. During the application of this device, when the clamping module 76 is working, the connecting arm 761 transmits the power of the sliding block 75 to the clamping plate 762. When the sliding block 75 moves along the rail frame 72, the connecting arm 761 drives the clamping plate 762 synchronously. As the pipe fitting 9 is moved closer or further away from the pipe to be welded, the V-shaped groove 763 on the inner side of the clamping plate 762 can fit against the outer contour of the pipe fitting. The support force of the two side walls enables stable clamping of pipe fittings of different diameters. The ball bearings 764 inside the groove 763 contact the surface of the pipe fitting, converting the sliding friction between the pipe fitting and the clamping plate 762 into rolling friction. While maintaining the clamping force, the frictional resistance is reduced, allowing the pipe fitting to move or rotate smoothly in the lateral direction. This avoids scratching the surface of the pipe fitting and ensures that the adjusting mechanism 8 can effectively drive the pipe fitting to complete the docking and full welding action, ensuring the coordination of the clamping and adjusting process.

[0028] refer to Figures 1-2 The annular cover 4 has an observation window 10 on its front side, with a tempered glass plate fixedly connected inside. Mounting holes 11 are located at the four corners of the top of the base 1, penetrating the base 1. These mounting holes 11 are countersunk. During operation, the observation window 10 on the front of the annular cover 4, through the internally fixed tempered glass plate, provides a visual channel for operators to observe the welding status and weld formation of the pipes inside the annular cover 4 in real time. Simultaneously, the tempered glass plate utilizes its high strength to block welding spatter and high-temperature radiation, preventing injury to operators. The mounting holes 11 at the four corners of the top of the base 1 are countersunk. Bolts can be passed through these holes to fix the equipment in its working position. The countersunk design allows the bolt heads to be embedded in the surface of the base 1, preventing bolts from protruding and affecting the stability of the equipment or interfering with other components. This ensures the overall structural stability of the equipment during welding operations and reduces positional shifts caused by vibration.

[0029] Operating principle and advantages: In use, first, fix the equipment in the working position using bolts through the mounting holes 11 at the four corners of the top of the base 1 to ensure that the equipment will not shift due to vibration during welding. Place the pipe fitting 9 to be welded on the top of the base 1, aligning the inner sides of the clamping mechanisms 7 on both sides with the two ends of the pipe fitting. Then adjust the clamping mechanisms 7 to fix it. The third motor 73 starts, and its output drives the lead screw 74 to rotate inside the rail frame 72. Because the threads at both ends of the lead screw 74 rotate in opposite directions, and the sliding block 75 is threadedly connected to the lead screw 74 and subjected to... The rail frame 72 is limited, and the two sliding blocks 75 slide synchronously in opposite directions along the rail frame 72, driving the connecting arm 761 and the clamping plate 762 to move synchronously until the V-shaped clamping groove 763 on the inner side of the clamping plate 762 is completely in contact with the outer side of the pipe to be welded 9. The ball 764 in the clamping groove 763 is in close contact with the surface of the pipe, completing the clamping and fixing. The ball 764 converts the sliding friction between the pipe and the clamping plate 762 into rolling friction, which greatly reduces the frictional resistance while maintaining the clamping force, allowing the pipe to be welded 9 to rotate and move freely.

[0030] After clamping, the operating adjustment mechanism 8 is activated: the electric push rod 82 starts, and its output end pushes the first motor 83 and drive assembly 84 upward, so that the top of the drive assembly 84 fits tightly with the bottom of the pipe to be welded 9, ensuring effective power transmission. According to the welding requirements, the rotation angle of the concave frame 841 is adjusted by the first motor 83 to change the direction of action of the drive wheel 843: when the lateral position of the pipe needs to be adjusted, the first motor 83 drives the concave frame 841 to rotate, so that the drive wheel 843 is parallel to the pipe to be welded 9. After the second motor 842 starts, the drive wheel 843 drives the pipe to move laterally along the axis through friction with the bottom of the pipe until the two pipe ends to be welded extend into the interior through the inlet and outlet 5 on both sides of the annular cover 4 and are precisely aligned; when the pipe needs to be rotated to achieve full welding, the first motor 83 adjusts the rotation of the concave frame 841, so that the drive wheel 843 is perpendicular to the pipe to be welded 9. The second motor 842 drives the drive wheel 843 to rotate, driven by friction. The pipe rotates around its own axis to ensure that the welding covers the entire circumference. During welding, the gas shielded welding machine 2 is started and the shielding gas and welding current are delivered to the gas shielded welding torch 6 through the pipeline. The front end of the gas shielded welding torch 6 welds the pipe joint inside the annular cover 4. The annular cover 4 forms a shield for the welding area, which can not only block most of the welding spatter from spreading outward, reducing the impact on the surrounding environment and operators, but also slow down the dissipation rate of the shielding gas, improve its accumulation efficiency in the welding area, extend the protection time, reduce air intrusion, and reduce the risk of defects such as oxidation and porosity in the weld caused by oxygen, nitrogen and other gases. The operator can monitor the welding process in real time through the tempered glass observation window 10 on the front of the annular cover 4 and keep track of the welding status. During the use of the equipment, the first motor 83, the second motor 842 and the third motor 73 are all brake motors, which can be quickly locked when the machine stops to ensure that each component maintains the set position and prevent the pipe from shifting due to its own weight or vibration.

[0031] During the application of this device, its base 1 serves as a load-bearing foundation, providing an installation platform for each component. The equipment is fixed via mounting holes 11, ensuring welding stability. The gas-shielded welding machine 2 provides a stable power supply and protective gas, ensuring stable arc combustion and effective protection of the welding area. The gas-shielded welding torch 6, as the actuating component, completes the arc generation and molten pool formation operations within the annular cover 4. The clamping mechanism 7, through the cooperation of the third motor 73, lead screw 74, and sliding block 75, enables the clamping plate 762 to move synchronously in opposite directions, adapting to pipes of different diameters. The V-shaped clamping groove 763 fits snugly against the circular contour of the pipe, ensuring clamping stability. The ball bearing 764 reduces friction while preventing scratches on the pipe surface without affecting its movement adjustment. In the adjustment mechanism 8, the electric push rod 82 can flexibly adjust the contact state between the drive assembly 84 and the pipe. It adapts to pipes of different diameters; the first motor 83 switches between two modes of pipe movement and rotation by adjusting the angle of the drive wheel 843. Lateral movement facilitates precise pipe docking, while rotation meets all welding needs without manual adjustment, reducing the labor intensity of welders; the drive wheel 843 transmits power through friction, and the second motor 842 provides stable driving force to ensure smooth and controllable pipe movement. The tempered glass plate of the observation window 10 combines light transmission and protection, facilitating observation of the welding process while blocking spatter and high-temperature radiation, protecting the safety of operators. The overall structure achieves integrated operation of pipe clamping, docking, rotation, and welding through mechanized adjustment, reducing manual intervention, lowering labor intensity, improving welding efficiency and quality stability, and solving the problems of high labor intensity and difficulty in guaranteeing quality in traditional manual welding.

[0032] The observation window 10 of the annular cover 4 is 200mm×150mm in size, and the tempered glass plate is 5-8mm thick; the mounting hole 11 of the substrate has a diameter of 12-16mm and a countersunk hole depth of 8-10mm; the first motor 83 and the second motor 842 are 57 stepper motors with a rated voltage of 24V and a rated current of 3A; the third motor 73 is a 42 stepper motor with a rated voltage of 12V and a rated current of 1.5A; the electric actuator 82 is a 12V DC electric actuator 82 with a stroke of 50-100mm and a thrust of 500N; the electronic components are connected in parallel through wires and are powered by a 220V AC power supply converted to the corresponding voltage by a switching power supply; the controller is a PLC controller, model S7-200SMART, which is installed inside the rear side of the base 1 and connected to each motor and electric actuator 82 through wires to achieve centralized control.

Claims

1. A low-spatter short-circuit gas shielded welding device, characterized in that: The system includes a base (1), a gas shielded welding machine (2) is fixedly installed at the middle of the rear side of the top of the base (1), a support rod (3) is fixedly installed at the middle of the top of the base (1), an annular cover (4) is fixedly installed at the top of the support rod (3), a gas shielded welding gun (6) is fixedly installed at the middle of the rear side of the annular cover (4), a clamping mechanism (7) is fixedly installed on both sides of the top of the base (1), an adjusting mechanism (8) is fixedly installed between the clamping mechanism (7) and the support rod (3) at the top of the base (1), a pipe fitting (9) to be welded is clamped on the inner side of the clamping mechanism (7), and the top of the adjusting mechanism (8) and the bottom of the pipe fitting (9) to be welded are fitted together. The adjustment mechanism (8) includes a frame (81), which is fixedly installed on the top of the base (1) and located between the support rod (3) and the clamping mechanism (7). An electric push rod (82) is fixedly installed inside the frame (81). A first motor (83) is fixedly installed through the frame (81) at the output end of the electric push rod (82). A drive assembly (84) is fixedly installed at the output end of the first motor (83). The top of the drive assembly (84) is fitted and connected to the bottom of the pipe fitting (9) to be welded.

2. The low-spatter short-circuit gas shielded welding equipment according to claim 1, characterized in that: The drive assembly (84) includes a concave frame (841), which is fixedly installed on the top output end of the first motor (83). A second motor (842) is fixedly installed on the front side of the concave frame (841). A drive wheel (843) is fixedly installed through the concave frame (841) at the output end of the second motor (842). The top of the drive wheel (843) is fitted and connected to the bottom of the pipe fitting (9) to be welded.

3. The low-spatter short-circuit gas shielded welding equipment according to claim 1, characterized in that: The clamping mechanism (7) includes a fixing plate (71), which is fixedly installed on both sides of the top of the base (1). A rail frame (72) is fixedly installed on the rear side of the top of the fixing plate (71). A third motor (73) is fixedly installed on the top of the rail frame (72). A lead screw (74) is fixedly installed through the rail frame (72) at the output end of the third motor (73). The lead screw (74) is rotatably connected to the inside of the rail frame (72). The two ends of the lead screw (74) have opposite thread directions. Both ends of the lead screw (74) are threadedly connected to sliding blocks (75). The sliding blocks (75) are slidably connected to the two ends inside the rail frame (72). A clamping module (76) is fixedly installed on the front side of the sliding block (75).

4. The low-spatter short-circuit gas shielded welding equipment according to claim 3, characterized in that: The clamping module (76) includes a connecting arm (761), which is fixedly installed on the front side of the sliding block (75), and a clamping plate (762) is fixedly installed on the inner side of the front end of the connecting arm (761).

5. The low-spatter short-circuit gas shielded welding equipment according to claim 4, characterized in that: The clamping plate (762) has a clamping groove (763) on its inner side. The overall cross-sectional shape of the clamping groove (763) is V-shaped. Ball bearings (764) are rotatably connected to both sides of the inner side of the clamping groove (763) at equal intervals.

6. The low-spatter short-circuit gas shielded welding equipment according to claim 1, characterized in that: The annular cover (4) has an observation window (10) on its front side, and a tempered glass plate is fixedly connected inside the observation window (10).

7. The low-spatter short-circuit gas shielded welding equipment according to claim 1, characterized in that: Mounting holes (11) are provided at the four corners of the top of the base (1). The mounting holes (11) penetrate the base (1) and are countersunk holes.

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