Automatic welding device for stainless steel gas pipe flange plate
By designing an automated welding device that includes a bracket base, a welding robot, and support rollers, the automation and adaptability issues of stainless steel gas pipe flange welding were solved, achieving precise positioning and efficient welding of multiple specifications, thereby improving production efficiency and welding quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA COAL XINJI ENERGY CO LTD
- Filing Date
- 2025-09-18
- Publication Date
- 2026-08-04
AI Technical Summary
Existing technologies for welding stainless steel gas pipe flanges suffer from low automation, poor specification adaptability, unstable fixing, and cumbersome operation, resulting in low production efficiency and inconsistent welding quality.
An automated welding device, comprising a bracket base, welding robot, bracket, rollers, clamping seat, and grippers, is used to achieve precise positioning and welding of gas pipes and flanges of various specifications by adjusting the spacing of the movable bracket and rollers, combined with the welding robot and gas shielded welding machine.
It enables precise positioning of gas pipes and flanges of various specifications, improves welding accuracy and equipment versatility, reduces labor intensity and production costs, and improves production efficiency and welding stability.
Smart Images

Figure CN224587266U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welding equipment technology, and in particular to an automatic welding device for stainless steel gas pipe flanges. Background Technology
[0002] In the industrial sector, flange welding primarily employs two methods: manual welding and traditional automated welding equipment. Manual welding relies heavily on the operator's experience and skills, resulting in high labor intensity, low production efficiency, and significantly reduced weld quality due to human factors, making it difficult to guarantee consistency and stability. While traditional automated welding equipment can partially replace manual welding, the overall technology still has the following limitations: Firstly, the automation level is low and the adaptability to specifications is poor, only suitable for flanges of specific specifications. When changing to different sizes and types of workpieces, a lot of time and manpower are required to adjust the tooling, which affects production efficiency and cost. Secondly, the workpiece is not fixed stably, and the fixing effect is poor for irregular or large-sized flanges, and the fixing operation is cumbersome. Therefore, this utility model proposes an automatic welding device for stainless steel gas pipe flanges to solve the problems existing in the prior art. Utility Model Content
[0003] To address the aforementioned issues, this utility model proposes an automatic welding device for stainless steel gas pipe flanges. This device can accurately position the workpiece and ensure welding precision. Furthermore, it eliminates the need for frequent tooling changes and can be adapted to the processing of various specifications and types of gas pipes and flanges, thus improving the equipment's versatility.
[0004] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: an automatic welding device for stainless steel gas pipe flanges, including a bracket base and a welding robot, wherein the welding robot is located at the left and right ends of the front side of the bracket base, and the output end of the welding robot is equipped with a welding gun; The bracket base is provided with brackets on both the left and right ends, and the bracket on the right end is movably set. The bracket is provided with rollers on both the front and rear sides. The bracket is provided with a clamping seat on the rear side, and a clamping claw is movably set on the front side of the clamping seat.
[0005] A further improvement is that a control box and a gas shielded welding machine are respectively installed at both ends of the welding robot. The control end of the control box is connected to the welding robot, and the output end of the gas shielded welding machine is connected to the welding gun.
[0006] A further improvement is that: a first guide rail is provided at the right end of the top of the bracket base, the bracket at the right end is movably mounted on the first guide rail, a first pneumatic cylinder is provided at the right end of the inner side of the bracket base, and the output end of the first pneumatic cylinder is connected to a connecting block, the connecting block being connected to the bracket at the right end.
[0007] A further improvement is that a gasket is provided at the bottom of the bracket on the left end, and the gasket is fixed to the bracket base by bolts.
[0008] A further improvement is that: the bracket has an internal mounting groove, and a bidirectional threaded screw is rotatably mounted inside the mounting groove; wheel seats are movably mounted on the front and rear sides above the bracket; and the bottom of each of the two sets of wheel seats is provided with a nut block that matches the threads at both ends of the bidirectional threaded screw; and a rotating disc is connected to the front side of the bidirectional threaded screw.
[0009] A further improvement is that the support roller is rotatably located inside the wheel seat, and the front support roller is driven to rotate by a reduction motor.
[0010] A further improvement is that: a second guide rail is provided on the front side of the clamping seat, and a movable frame is movably provided on the second guide rail; the gripper is located on the front side of the movable frame; a support is provided above the front side of the clamping seat, and a second pneumatic cylinder is provided on the support; the output end of the second pneumatic cylinder is connected to the movable frame.
[0011] The beneficial effects of this utility model are as follows: 1. This utility model uses movable brackets to change the distance between two sets of brackets, and movable support rollers to change the distance between the front and rear support rollers, thereby supporting the stainless steel gas pipe to be welded. The gas pipe is clamped from above by the movement of the upper gripper, which can accurately position the workpiece and ensure welding accuracy. At the same time, it can be adapted to the processing of various specifications and types of gas pipes and flanges without frequent tooling changes, thus improving the versatility of the equipment.
[0012] 2. This utility model uses a welding robot in conjunction with a welding gun to perform welding operations. The welding robot is controlled by a control box, and the welding gun is supplied by a gas shielded welding machine. This significantly improves the level of automation and reduces costs, reduces manual intervention, lowers labor intensity, and improves production efficiency and stability. Attached Figure Description
[0013] Figure 1 This is the front view of the present invention; Figure 2 For the present utility model Figure 1 Schematic diagram of the structure at point A in the middle; Figure 3 For the present utility model Figure 1 Schematic diagram of the structure at point B.
[0014] The components are: 1. Bracket base; 2. Welding robot; 3. Welding gun; 4. Bracket; 5. Support roller; 6. Clamping seat; 7. Gripper; 8. Control box; 9. Gas shielded welding machine; 10. First guide rail; 11. First pneumatic cylinder; 12. Connecting block; 13. Double-ended threaded screw; 14. Wheel seat; 15. Turning plate; 16. Second guide rail; 17. Movable frame; 18. Support; 19. Second pneumatic cylinder. Detailed Implementation
[0015] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.
[0016] Example 1 according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes an automatic welding device for stainless steel gas pipe flanges, including a bracket base 1 and a welding robot 2. The welding robot 2 is located at the left and right ends of the front side of the bracket base 1, and the output end of the welding robot 2 is equipped with a welding gun 3. The bracket base 1 has brackets 4 on both the left and right sides above it, with the right bracket 4 being movable. Each bracket 4 has movably mounted support rollers 5 on its front and rear sides. A clamping seat 6 is located on the rear side of the bracket 4, and a clamping claw 7 is movably mounted on the front side of the clamping seat 6. In use, the distance between the two sets of brackets 4 is changed by the movable brackets 4, and the distance between the front and rear support rollers 5 is changed by the movable support rollers 5, thus supporting the stainless steel gas pipe to be welded. The gas pipe is clamped from above by the movement of the clamping claw 7. This allows for precise workpiece positioning and ensures welding accuracy. Furthermore, it eliminates the need for frequent tooling changes, making it suitable for processing various specifications and types of gas pipes and flanges, thus improving the equipment's versatility.
[0017] The welding robot 2 has a control box 8 and a gas-shielded welding machine 9 at each end. The control end of the control box 8 is connected to the welding robot 2, and the output end of the gas-shielded welding machine 9 is connected to the welding gun 3. The flange blank to be welded is placed on the support roller 5, and the gripper 7 fixes the pipe. The welding robot 2 moves to the welding point, identifies the flange position through a vision recognition system, tracks the weld seam, and starts welding with the welding gun 3. After welding, the robot returns to its original position. The gripper 7 retracts, and the finished pipe is transferred to a designated location using a lifting device. After the workpiece is fixed, the vision recognition system and laser rangefinder precisely measure the flange position and transmit the data to the control box 8. The control box 8 calculates the welding trajectory and welding parameters based on the measurement results and sends instructions to the welding robot 2 and the welding gun 3, preparing for welding. The control box 8 automatically adjusts the welding parameters or the robot's movement trajectory based on feedback information to ensure welding quality.
[0018] The bracket base 1 has a first guide rail 10 at its top right end, and the bracket 4 at the right end is movably mounted on the first guide rail 10. The bracket base 1 has a first pneumatic cylinder 11 at its inner right end, and the output end of the first pneumatic cylinder 11 is connected to a connecting block 12, which is connected to the bracket 4 at the right end. The bracket 4 at the left end has a gasket at its bottom, and the gasket is fixed to the bracket base 1 by bolts. In use, the first pneumatic cylinder 11 pushes the bracket 4 at the right end to move on the first guide rail 10, changing the distance between it and the bracket 4 at the left end, adapting to the processing of various specifications and types of gas pipes and flanges.
[0019] The bracket 4 has an internal mounting groove, and a bidirectional threaded screw 13 is rotatably mounted inside the mounting groove. Wheel seats 14 are movably mounted on both the front and rear sides of the bracket 4, and the bottom of each set of wheel seats 14 has a nut block that matches the threads at both ends of the bidirectional threaded screw 13. A rotating disk 15 is connected to the front side of the bidirectional threaded screw 13. In use, rotating the rotating disk 15 drives the bidirectional threaded screw 13 to rotate. Based on the thread action of the nut blocks, the two sets of wheel seats 14 move relative to each other, changing the distance between them, adapting to the processing of various specifications and types of gas pipes and flanges.
[0020] The support roller 5 is rotatably mounted inside the wheel seat 14, and the front support roller 5 is driven to rotate by a reduction motor. In use, the reduction motor drives the front support roller 5 to rotate, and the support roller 5 supports the gas pipe, driving the gas pipe to rotate, which facilitates changing the welding position.
[0021] Example 2 according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes an automatic welding device for stainless steel gas pipe flanges, including a bracket base 1 and a welding robot 2. The welding robot 2 is located at the left and right ends of the front side of the bracket base 1, and the output end of the welding robot 2 is equipped with a welding gun 3. The bracket base 1 has brackets 4 on both the left and right sides above it, with the right bracket 4 being movable. Each bracket 4 has movably mounted support rollers 5 on its front and rear sides. A clamping seat 6 is located on the rear side of the bracket 4, and a clamping claw 7 is movably mounted on the front side of the clamping seat 6. In use, the distance between the two sets of brackets 4 is changed by the movable brackets 4, and the distance between the front and rear support rollers 5 is changed by the movable support rollers 5, thus supporting the stainless steel gas pipe to be welded. The gas pipe is clamped from above by the movement of the clamping claw 7. This allows for precise workpiece positioning and ensures welding accuracy. Furthermore, it eliminates the need for frequent tooling changes, making it suitable for processing various specifications and types of gas pipes and flanges, thus improving the equipment's versatility.
[0022] The clamping seat 6 has a second guide rail 16 on its front side, and a movable frame 17 is movably mounted on the second guide rail 16. The gripper 7 is located on the front side of the movable frame 17. A support 18 is located above the front side of the clamping seat 6, and a second pneumatic cylinder 19 is mounted on the support 18. The output end of the second pneumatic cylinder 19 is connected to the movable frame 17. In use, the second pneumatic cylinder 19 pushes the movable frame 17 to move along the second guide rail 16, changing the height of the gripper 7 to facilitate precise clamping and fixing of the gas pipe.
[0023] This automatic welding device for stainless steel gas pipe flanges supports the stainless steel gas pipe to be welded by adjusting the spacing between two sets of brackets 4 via movable brackets 4 and the spacing between the front and rear support rollers 5 via movable support rollers 5. The gas pipe is then gripped from above by the moving grippers 7, ensuring precise workpiece positioning and welding accuracy. Furthermore, it eliminates the need for frequent tooling changes, making it adaptable to various specifications and types of gas pipes and flanges, thus enhancing the equipment's versatility. The welding operation is performed by a welding robot 2 in conjunction with a welding gun 3. The welding robot 2 is controlled by a control box 8, and the welding gun 3 is supplied by a gas-shielded welding machine 9. This significantly improves automation, reduces costs, minimizes manual intervention, lowers labor intensity, and enhances production efficiency and stability.
[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An automatic welding device for stainless steel gas pipe flanges, comprising a bracket base (1) and a welding robot (2), characterized in that: The welding robot (2) is located at the left and right ends of the front side of the bracket base (1), and the output end of the welding robot (2) is equipped with a welding gun (3). The bracket base (1) is provided with brackets (4) on both the left and right sides above, and the bracket (4) on the right side is movably set. The bracket (4) is provided with rollers (5) on both the front and rear sides. The bracket (4) is provided with a clamping seat (6) on the rear side, and a clamping claw (7) is movably set on the front side of the clamping seat (6).
2. The automatic welding device for stainless steel gas pipe flanges according to claim 1, characterized in that: The welding robot (2) is equipped with a control box (8) and a gas shielded welding machine (9) at both ends. The control end of the control box (8) is connected to the welding robot (2), and the output end of the gas shielded welding machine (9) is connected to the welding gun (3).
3. The automatic welding device for stainless steel gas pipe flanges according to claim 1, characterized in that: The bracket base (1) has a first guide rail (10) at the top right end, and the bracket (4) at the right end is movably mounted on the first guide rail (10). The bracket base (1) has a first pneumatic cylinder (11) at the inner right end, and the output end of the first pneumatic cylinder (11) is connected to a connecting block (12). The connecting block (12) is connected to the bracket (4) at the right end.
4. The automatic welding device for stainless steel gas pipe flanges according to claim 1, characterized in that: The bottom of the bracket (4) on the left end is provided with a gasket, and the gasket is fixed to the bracket base (1) by bolts.
5. The automatic welding device for stainless steel gas pipe flanges according to claim 1, characterized in that: The bracket (4) has an installation groove inside, and a bidirectional threaded screw (13) is rotatably installed inside the installation groove. Wheel seats (14) are movably installed on the front and rear sides above the bracket (4), and the bottom of the two sets of wheel seats (14) are respectively provided with nut blocks that are compatible with the threads at both ends of the bidirectional threaded screw (13). A turntable (15) is connected to the front side of the bidirectional threaded screw (13).
6. The automatic welding device for stainless steel gas pipe flanges according to claim 5, characterized in that: The roller (5) is rotatably mounted on the inner side of the wheel seat (14), and the front roller (5) is driven to rotate by a geared motor.
7. The automatic welding device for stainless steel gas pipe flanges according to claim 1, characterized in that: The clamping seat (6) is provided with a second guide rail (16) on the front side, and a movable frame (17) is movably provided on the second guide rail (16). The gripper (7) is provided on the front side of the movable frame (17). A support (18) is provided above the front side of the clamping seat (6), and a second pneumatic cylinder (19) is provided on the support (18). The output end of the second pneumatic cylinder (19) is connected to the movable frame (17).