A positioning fixture for circumferential welding of stainless steel pipes

Abstract

This utility model discloses a positioning fixture for circumferential welding of stainless steel pipes, belonging to the field of stainless steel pipe processing technology. It includes a base frame and two sets of stainless steel pipe bodies. Two sets of movable plates are slidably installed on the top of the base frame. A rotating shaft and a transmission shaft are rotatably installed inside each of the two movable plates. A sleeve and a frame are rotatably installed on the outer side of each of the two rotating shafts. A bevel gear is fixedly installed at one end of each of the two rotating shafts. Two sets of support plates are fixedly installed on the inner wall of one side of each of the two frames. A screw is rotatably installed between the inside of each of the four support plates and the corresponding inner wall of one side of the frame. A bevel gear is fixedly installed at one end of each of the four screws. This ensures that the pipe is stably and firmly fixed, preventing pipe displacement during welding, ensuring welding quality, eliminating the need for frequent replacement of fixture components for different pipe specifications, saving time and costs, facilitating uniform welding of the circumferential seam with the welding gun, ensuring uniform weld quality, reducing welding defects, and improving welding effect.

Description

Technical Field

[0001] This utility model relates to the field of stainless steel pipe processing technology, and in particular to a positioning tool for circumferential welding of stainless steel pipes. Background Technology

[0002] In the stainless steel pipe processing industry, circumferential welding is a key process for connecting pipes and constructing various stainless steel structures. With the continuous growth of demand for stainless steel pipes in the industrial manufacturing sector, the requirements for the quality and efficiency of circumferential welding are becoming increasingly stringent. As an important piece of equipment to ensure the stability and accuracy of the welding process, the performance of welding positioning fixtures directly affects the final product quality and production efficiency.

[0003] Traditional positioning fixtures for stainless steel pipe circumferential welding often suffer from poor versatility. Different pipe diameters frequently require multiple specific fixtures, increasing tooling costs and significantly reducing production efficiency due to frequent fixture changes. Furthermore, manual adjustment of the welding gun position at the connection point is often necessary, making it difficult to maintain a constant distance and angle between the welding gun and the pipe circumferential weld. This results in inconsistent weld quality, severely impacting the overall performance and service life of the stainless steel pipe welded structure. Therefore, we propose a new positioning fixture for stainless steel pipe circumferential welding to address this problem. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning fixture for circumferential welding of stainless steel pipes to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A positioning fixture for circumferential welding of stainless steel pipes includes: a base frame and two sets of stainless steel pipe bodies. Two sets of movable plates are slidably mounted on the top of the base frame. A rotating shaft and a transmission shaft are rotatably mounted inside each of the two sets of movable plates. A sleeve and a frame are rotatably mounted on the outer side of each of the two sets of rotating shafts. A bevel gear is fixedly mounted at one end of each of the two sets of rotating shafts. Two sets of support plates are fixedly mounted on the inner wall of one side of each of the two sets of frame bodies. A screw rod is rotatably mounted between the interior of each of the four sets of support plates and the corresponding inner wall of one side of the frame body. A bevel gear is fixedly mounted at one end of each of the four sets of screw rods. The outer sides of each of the four sets of screw rods are threaded. The system is connected to movable seats. Pipe clamps are fixedly installed on one side of each of the four movable seats. Drive gears are fixedly installed on one end of each of the two sets of drive shafts. Drive gears are fixedly installed on the outer side of each of the two sets of sleeves. A support plate and a fixed seat are fixedly installed on the top of the bottom frame. An electric push rod is fixedly installed on the top of the support plate. An installation plate is fixedly installed on the output end of the electric push rod. A welding gun is provided at the bottom of the installation plate. A slider is slidably installed inside the fixed seat. A support is fixedly installed on the top of the slider. The two sets of stainless steel pipe bodies abut against the corresponding two sets of pipe clamps and against the supports.

[0007] Preferably, a worm gear is rotatably mounted inside the fixed base, and a turntable is fixedly mounted at one end of the worm gear. A second screw is threadedly connected inside the slider, and the second screw is rotatably mounted inside the fixed base. A worm wheel is fixedly mounted at the bottom of the second screw. Two sets of guide rods are fixedly mounted on the top of the mounting plate, and the two sets of guide rods are slidably mounted on the top of the support plate. A bidirectional lead screw is rotatably mounted inside the bottom frame, and two sets of moving plates are threadedly connected to the outside of the bidirectional lead screw. Two sets of moving seats are slidably mounted on one side of the frame, and a rotating seat is fixedly mounted on one side of each of the two sets of moving plates. Two sets of frame bodies are fixedly mounted on one side of the corresponding rotating ring, and four sets of support legs are fixedly mounted on the bottom of the bottom frame.

[0008] Preferably, motor 2 and motor 3 are fixedly installed on one side of each of the two sets of movable plates, one end of each of the two sets of rotating shafts is fixedly installed on the output end of the corresponding motor 2, and one end of each of the two sets of transmission shafts is fixedly installed on the output end of the corresponding motor 3.

[0009] Preferably, the top of the bottom frame is provided with two sets of slide rails, and the two sets of movable plates are slidably installed in the corresponding slide rails. A motor is fixedly installed on one side of the bottom frame, and one end of the bidirectional lead screw is fixedly installed on the output end of the motor.

[0010] Preferably, the two sets of driving gears mesh with the corresponding driven gears, the two sets of bevel gears mesh with the two adjacent sets of bevel gears, and the two sets of sleeves are fixedly installed on one side of the corresponding frame.

[0011] Preferably, each of the two sets of frames has two sets of sliding grooves on one side, and the four sets of movable seats are slidably installed in the corresponding sliding grooves. The worm gear and the worm are meshed together, and the turntable is rotatably installed on one side of the fixed seat.

[0012] In this utility model, a positioning fixture for circumferential welding of stainless steel pipes is provided. Through the cooperation of a turntable, a worm gear, a worm wheel, and a screw, a slider is driven to move up and down within a fixed seat, thereby adjusting the support to the bottom of the stainless steel pipe body and providing support for the stainless steel pipe body. There is no need for complicated equipment replacement or reinstallation, saving a lot of time and effort. This universal design reduces the production cost of enterprises and avoids the cost of purchasing new equipment due to changes in pipe specifications.

[0013] In this utility model, a positioning fixture for circumferential welding of stainless steel pipes is provided. Through the cooperation of an electric push rod, a mounting plate and a guide rod, the mounting plate is driven to adjust the welding gun to a suitable position. It is suitable for welding stainless steel pipe bodies of different sizes, which greatly enhances the adaptability of the fixture to various types of pipes. It eliminates the need to replace complex welding equipment due to different pipe diameters, thereby reducing production costs.

[0014] This utility model has a reasonable structural design. A second motor drives a rotating shaft and a bevel gear to rotate. Since the first bevel gear meshes with two adjacent sets of second bevel gears, it drives the two sets of second bevel gears and the corresponding screw to rotate within the support plate. This, in turn, drives two sets of movable seats to slide relative to each other within a groove on one side of the frame. This achieves the clamping and fixing of the stainless steel pipe body. Furthermore, the first motor drives a bidirectional lead screw to rotate, which in turn drives the two sets of movable plates to move relative to each other within a slide rail on the bottom frame. This causes the two sets of movable plates, the rotating seat, the rotating ring, the frame, the pipe clamp, the stainless steel pipe body, and their related components to move relative to each other, thus allowing the two sets of stainless steel pipe bodies to be clamped and fixed. Before welding, the assembly process involves a three-drive motor with a rotating transmission shaft and a drive gear. The meshing of the drive gear and driven gear drives the sleeve and frame to rotate under the constraints of the rotating ring and swivel base. This rotation of the stainless steel pipe clamped by the pipe clamp completes the welding of the entire circumferential seam, ensuring the pipe is stably and firmly fixed, preventing displacement during welding, guaranteeing welding quality, eliminating the need for frequent tooling changes for different pipe specifications, saving time and costs, and facilitating uniform welding of the circumferential seam with the welding gun, ensuring consistent weld quality, reducing welding defects, and improving the overall welding effect. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a positioning fixture for circumferential welding of stainless steel pipes proposed in this utility model.

[0016] Figure 2 This is a cross-sectional structural schematic diagram of a positioning fixture for circumferential welding of stainless steel pipes proposed in this utility model.

[0017] Figure 3 for Figure 2 A magnified view of part A in the middle;

[0018] Figure 4 for Figure 2 A magnified view of part B in the middle section.

[0019] In the diagram: 1. Base frame; 2. Support leg; 3. Motor 1; 4. Double-acting lead screw; 5. Moving plate; 6. Motor 2; 7. Motor 3; 8. Rotating shaft; 9. Bevel gear 1; 10. Drive shaft; 11. Rotary seat; 12. Rotary ring; 13. Frame; 14. Support plate; 15. Screw 1; 16. Bevel gear 2; 17. Moving seat; 18. Pipe clamp; 19. Stainless steel pipe body; 20. Driving gear; 21. Driven gear; 22. Sleeve; 23. Support plate; 24. Electric push rod; 25. Guide rod; 26. Fixed seat; 27. Slider; 28. Support; 29. ​​Mounting plate; 30. Welding gun; 31. Screw 2; 32. Worm gear; 33. Worm; 34. Turntable. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4A positioning fixture for circumferential welding of stainless steel pipes includes: a base frame 1 and two sets of stainless steel pipe bodies 19. Two sets of movable plates 5 are slidably mounted on the top of the base frame 1. A rotating shaft 8 and a transmission shaft 10 are rotatably mounted inside each set of movable plates 5. A sleeve 22 and a frame 13 are rotatably mounted on the outer sides of each set of rotating shafts 8. A bevel gear 9 is fixedly mounted at one end of each set of rotating shafts 8. Two sets of support plates 14 are fixedly mounted on the inner wall of one side of each set of frame bodies 13. A screw 15 is rotatably mounted between the interior of each set of support plates 14 and the corresponding inner wall of one side of the frame body 13. A bevel gear 16 is fixedly mounted at one end of each set of screws 15. A movable plate 10 is threadedly connected to the outer side of each set of screws 15. The moving seat 17 has four sets of moving seats 17, each with a pipe clamp 18 fixedly installed on one side. Each of the two sets of transmission shafts 10 has a drive gear 20 fixedly installed at one end. Each of the two sets of sleeves 22 has a driven gear 21 fixedly installed on the outer side. The bottom frame 1 has a support plate 23 and a fixed seat 26 fixedly installed on the top. The support plate 23 has an electric push rod 24 fixedly installed on the top. The output end of the electric push rod 24 has a mounting plate 29 fixedly installed on the output end. The bottom of the mounting plate 29 has a welding gun 30. The fixed seat 26 has a slider 27 slidably installed inside. The top of the slider 27 has a support 28 fixedly installed on the top. The two sets of stainless steel pipe bodies 19 abut against the corresponding two sets of pipe clamps 18 and against the support 28.

[0022] In this embodiment, a worm gear 33 is rotatably installed inside the fixed base 26, and a turntable 34 is fixedly installed at one end of the worm gear 33. A screw 31 is threadedly connected inside the slider 27. The screw 31 is rotatably installed inside the fixed base 26. A worm wheel 32 is fixedly installed at the bottom of the screw 31. Two sets of guide rods 25 are fixedly installed on the top of the mounting plate 29. The two sets of guide rods 25 are slidably installed on the top of the support plate 23. A bidirectional lead screw 4 is rotatably installed inside the bottom frame 1. Two sets of moving plates 5 are threadedly connected to the outside of the bidirectional lead screw 4. Two sets of moving seats 17 are slidably installed on one side of the frame 13. A rotating seat 11 is fixedly installed on one side of each of the two sets of moving plates 5. Two sets of frame bodies 13 are fixedly installed on one side of the corresponding rotating ring 12. Four sets of support legs 2 are fixedly installed at the bottom of the bottom frame 1.

[0023] In this embodiment, motor 6 and motor 7 are fixedly installed on one side of each of the two sets of movable plates 5, one end of each of the two sets of rotating shafts 8 is fixedly installed on the output end of the corresponding motor 6, and one end of each of the two sets of transmission shafts 10 is fixedly installed on the output end of the corresponding motor 7.

[0024] In this embodiment, two sets of slide rails are provided on the top of the bottom frame 1, and two sets of movable plates 5 are slidably installed in the corresponding slide rails. A motor 3 is fixedly installed on one side of the bottom frame 1, and one end of the bidirectional lead screw 4 is fixedly installed on the output end of the motor 3.

[0025] In this embodiment, the two sets of driving gears 20 mesh with the corresponding driven gears 21, the two sets of bevel gears 9 mesh with the two adjacent sets of bevel gears 16, and the two sets of sleeves 22 are fixedly installed on one side of the corresponding frame 13.

[0026] In this embodiment, two sets of sliding grooves are provided on one side of each of the two sets of frames 13, and four sets of movable seats 17 are slidably installed in the corresponding sliding grooves. The worm gear 32 and the worm 33 are meshed with each other, and the turntable 34 is rotatably installed on one side of the fixed seat 26.

[0027] In this embodiment, during use, two identical stainless steel pipe bodies 19 are placed between two corresponding pipe clamps 18. The motor 6 is started to drive the rotating shaft 8 and bevel gear 9 to rotate. Since bevel gear 9 meshes with the two adjacent bevel gears 16, the two bevel gears 16 and the corresponding screw 15 are driven to rotate in the support plate 14, thereby driving the two corresponding moving seats 17 to slide relative to each other in the slide groove on one side of the frame 13. Thus, the pipe clamp 18 clamps and fixes the stainless steel pipe body 19. Then, the motor 3 is started to drive the bidirectional screw 4 to rotate, thereby driving the two moving plates 5 to move relative to each other in the slide rail of the bottom frame 1. This causes the two moving plates 5 to drive the rotating seat 11, rotating ring 12, frame 13, pipe clamp 18, stainless steel pipe body 19 and its related components to move relative to each other, so that the two stainless steel pipe bodies 19 can be spliced ​​before welding.

[0028] Then, the turntable 34 is rotated to drive the worm 33 to rotate. Through the meshing between the worm 33 and the worm wheel 32, the worm wheel 32 and the screw 31 are driven to rotate. The screw 31 rotates in the fixed seat 26 and is threadedly connected to the inside of the slider 27, thereby driving the slider 27 to move up and down in the fixed seat 26. This adjusts the support 28 to the bottom of the stainless steel pipe body 19, providing support for the stainless steel pipe body 19 and greatly improving its versatility.

[0029] The electric push rod 24 is activated to push the mounting plate 29 to move up and down under the restriction of the guide rod 25, thereby driving the mounting plate 29 to adjust the welding gun 30 to a suitable position for welding stainless steel pipe bodies 19 of different sizes. The welding gun 30 and the motor 7 are activated. The motor 7 drives the transmission shaft 10 and the drive gear 20 to rotate. Since the drive gear 20 meshes with the driven gear 21, the driven gear 21 drives the sleeve 22 and the frame 13 to rotate under the restriction of the rotating ring 12 and the rotating seat 11, thereby rotating the stainless steel pipe body 19 clamped by the pipe clamp 18. As the pipe continues to rotate, the welding work of the entire circumferential seam is completed.

[0030] The above provides a detailed description of a stainless steel pipe circumferential welding positioning fixture provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of these embodiments are only intended to aid in understanding the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A positioning fixture for circumferential welding of stainless steel pipes, characterized in that, include: The bottom frame (1) and two sets of stainless steel pipe bodies (19) are provided. Two sets of movable plates (5) are slidably installed on the top of the bottom frame (1). A rotating shaft (8) and a transmission shaft (10) are rotatably installed inside the two sets of movable plates (5). A sleeve (22) and a frame (13) are rotatably installed on the outside of the two sets of rotating shafts (8). A bevel gear (9) is fixedly installed at one end of each set of rotating shafts (8). Two sets of support plates (14) are fixedly installed on the inner wall of one side of each set of frame bodies (13). A screw (15) is rotatably installed between the inside of each set of support plates (14) and the inner wall of the corresponding frame body (13). A bevel gear (16) is fixedly installed at one end of each set of screws (15). A movable seat (17) is threadedly connected to the outside of each set of screws (15). One side of each of the two sets of transmission shafts (10) is fixedly installed with a pipe clamp (18), one end of each set of transmission shafts (10) is fixedly installed with a drive gear (20), the outer side of each set of sleeves (22) is fixedly installed with a driven gear (21), the top of the bottom frame (1) is fixedly installed with a support plate (23) and a fixed seat (26), the top of the support plate (23) is fixedly installed with an electric push rod (24), the output end of the electric push rod (24) is fixedly installed with an installation plate (29), the bottom of the installation plate (29) is provided with a welding gun (30), the inside of the fixed seat (26) is slidably installed with a slider (27), the top of the slider (27) is fixedly installed with a support (28), the two sets of stainless steel pipe bodies (19) abut against the corresponding two sets of pipe clamps (18) and abut against the support (28).

2. The positioning fixture for circumferential welding of stainless steel pipes according to claim 1, characterized in that, A worm gear (33) is rotatably mounted inside the fixed base (26). A turntable (34) is fixedly mounted at one end of the worm gear (33). A screw rod (31) is threadedly connected inside the slider (27). The screw rod (31) is rotatably mounted inside the fixed base (26). A worm wheel (32) is fixedly mounted at the bottom of the screw rod (31). Two sets of guide rods (25) are fixedly mounted on the top of the mounting plate (29). The two sets of guide rods (25) are slidably mounted on... At the top of the support plate (23), a bidirectional lead screw (4) is rotatably installed inside the bottom frame (1). Two sets of movable plates (5) are threadedly connected to the outside of the bidirectional lead screw (4). Two sets of movable seats (17) are slidably installed on one side of the frame (13). A rotating seat (11) is fixedly installed on one side of each of the two sets of movable plates (5). Two sets of frames (13) are fixedly installed on one side of the corresponding rotating ring (12). Four sets of support legs (2) are fixedly installed at the bottom of the bottom frame (1).

3. The positioning fixture for circumferential welding of stainless steel pipes according to claim 1, characterized in that, Motor 2 (6) and Motor 3 (7) are fixedly installed on one side of each of the two sets of movable plates (5). One end of each of the two sets of rotating shafts (8) is fixedly installed on the output end of the corresponding motor 2 (6), and one end of each of the two sets of transmission shafts (10) is fixedly installed on the output end of the corresponding motor 3 (7).

4. The positioning fixture for circumferential welding of stainless steel pipes according to claim 2, characterized in that, The bottom frame (1) has two sets of slide rails on its top. The two sets of moving plates (5) are slidably installed in the corresponding slide rails. A motor (3) is fixedly installed on one side of the bottom frame (1). One end of the bidirectional lead screw (4) is fixedly installed on the output end of the motor (3).

5. The positioning fixture for circumferential welding of stainless steel pipes according to claim 1, characterized in that, The two sets of driving gears (20) mesh with the corresponding driven gears (21), and the two sets of bevel gears (9) mesh with the two adjacent sets of bevel gears (16). The two sets of sleeves (22) are fixedly installed on one side of the corresponding frame (13).

6. The positioning fixture for circumferential welding of stainless steel pipes according to claim 2, characterized in that, Two sets of sliding grooves are provided on one side of each of the two sets of frame bodies (13), and four sets of movable seats (17) are slidably installed in the corresponding sliding grooves. The worm gear (32) and the worm (33) are meshed together, and the turntable (34) is rotatably installed on one side of the fixed seat (26).

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