Double-layer pipe coaxial positioning automatic welding tool

Abstract

This utility model relates to the technical field of double-layer pipes, and particularly to an automatic welding fixture for coaxial positioning of double-layer pipes. It includes a base, an adjustment mechanism and a welding assembly on the base, and a clamping mechanism on the adjustment mechanism. The adjustment mechanism includes a mounting plate fixedly mounted on the base, with a rotating rod rotatably connected to the mounting plate. The rotating rod has both positive and negative threads, and a slider is threadedly connected to the rotating rod, sliding on the base. The clamping mechanism includes a receiving block fixedly mounted on one end of the slider, with a first receiving ring fixedly mounted on the receiving block. A toothed ring is rotatably connected to the first receiving ring. The adjustment mechanism facilitates adjustment of the distance between the two clamping mechanisms, enabling welding of pipes of different sizes. The clamping mechanism also provides stable clamping and fixing of pipes of different sizes, improving the practicality of the welding fixture.

Description

Technical Field

[0001] This utility model relates to the technical field of double-layer tubes, and in particular to an automatic welding fixture for coaxial positioning of double-layer tubes. Background Technology

[0002] In the field of pipe welding, especially in the welding of double-layer pipes, ensuring the coaxiality and stable clamping of the two layers of pipes is crucial to ensuring welding quality. Most existing double-layer pipe welding fixtures have fixed structures and are only suitable for welding double-layer pipes of specific sizes. They cannot be flexibly adjusted when encountering pipes of different sizes, resulting in poor versatility and practicality. Furthermore, if the pipe clamping is unstable during the welding process, pipe displacement can easily occur, affecting welding quality and even leading to welding failure.

[0003] Therefore, we designed a multi-roller sliding contact power supply device to meet the needs of practical applications. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing an automatic welding fixture for coaxial positioning of double-layer tubes.

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

[0006] Design a double-layer tube coaxial positioning automatic welding fixture, including a base, an adjustment mechanism and a welding assembly on the base, a clamping mechanism on the adjustment mechanism, and an mounting plate fixedly mounted on the base. A rotating rod is rotatably connected to the mounting plate, and the rotating rod is provided with positive and negative threads. A slider is threadedly connected to the rotating rod, and the slider slides on the base.

[0007] The clamping mechanism includes a receiving block, which is fixedly installed on one end of the slider. A first receiving ring is fixedly installed on the receiving block, and a toothed ring is rotatably connected to the first receiving ring. A second receiving ring is fixedly installed on the top end of the receiving block. A mounting seat is fixedly installed on the inner wall of the second receiving ring, and a frame is rotatably connected to the inner wall of the mounting seat. A limit rod is fixedly installed on the toothed ring, and the limit rod slides on the inner wall of the frame.

[0008] In detail, the base is a square plate, and a first motor is fixedly installed on the base, with the first motor positioned horizontally.

[0009] In detail, the shaft end of the first motor is fixedly connected to one end of the rotating rod, and the rotating rod is set horizontally.

[0010] In detail, the mounting plate is a strip-shaped plate, the slider is a square block, there are two sliders, and the sliders are set horizontally.

[0011] In detail, the second receiving ring is vertically arranged and has a circular shape. A second motor is fixedly installed on the side of the second receiving ring, and the second motor is horizontally arranged.

[0012] In detail, a gear is fixedly installed on the shaft end of the second motor, and the gear meshes with a gear ring.

[0013] In detail, the first receiving ring is circular in shape, the first receiving ring and the second receiving ring are coaxial, the limiting rod is cylindrical in shape, and the frame is strip-shaped.

[0014] Core function: When welding double-layer tubes is required, the first motor is started according to the length of the double-layer tubes. The first motor is equipped with positive and negative threads, which will drive the two sliders to move towards each other along the surface of the base. During the process of the two sliders moving towards each other in a straight line, they will drive the two clamping mechanisms to move towards each other until the two clamping mechanisms move to the appropriate distance.

[0015] After the clamping mechanism moves to the appropriate distance, the two pipes are passed through the first and second receiving rings respectively, and the welding positions of the two pipes are positioned directly below the welding assembly. Then, the second motor is started, which drives the gear to rotate. When the gear rotates, it meshes with the gear ring, causing the gear ring to rotate. When the gear ring rotates, it drives the limiting rod to move in a cylindrical motion. When the limiting rod moves in a circular motion, it causes the frame to deflect around the mounting base until the frame clamps and fixes the pipe. After the pipe is clamped and fixed, the pipe is welded using the welding assembly. The above settings facilitate the clamping and fixing of pipes of different sizes and are beneficial for pipe welding.

[0016] The design scheme proposed in this utility model has the following beneficial effects in application:

[0017] 1. The adjustable mechanism allows for easy adjustment of the distance between the clamping mechanisms on both sides, facilitating the welding of pipes of different sizes;

[0018] 2. By setting up a clamping mechanism, it can stably clamp and fix pipes of different sizes, which helps to improve the practicality of welding fixtures. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the adjustment mechanism of this utility model;

[0021] Figure 3 This is a schematic diagram of the clamping mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the second receiving ring of this utility model;

[0023] Figure 5 This is a schematic diagram of the first receiving ring of this utility model.

[0024] In the diagram: 1. Base; 21. Receiving block; 22. First receiving ring; 23. Second receiving ring; 24. Limiting rod; 25. Frame; 26. Second motor; 27. Gear; 28. Mounting seat; 29. ​​Gear ring; 31. Rotating rod; 32. First motor; 33. Slider; 34. Mounting plate; 4. Welding assembly. Detailed Implementation

[0025] 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.

[0026] Reference Figures 1-5 A double-layer tube coaxial positioning automatic welding fixture includes a base 1, an adjustment mechanism and a welding assembly 4 on the base 1, a clamping mechanism on the adjustment mechanism, and an installation plate 34 fixedly installed on the base 1. A rotating rod 31 is rotatably connected to the installation plate 34. The rotating rod 31 is provided with positive and negative threads, and a slider 33 is threadedly connected to the rotating rod 31. The slider 33 slides on the base 1.

[0027] The clamping mechanism includes a receiving block 21, which is fixedly installed on one end of the slider 33. A first receiving ring 22 is fixedly installed on the receiving block 21. A toothed ring 29 is rotatably connected to the first receiving ring 22. A second receiving ring 23 is fixedly installed on the top end of the receiving block 21. A mounting base 28 is fixedly installed on the inner wall of the second receiving ring 23. A frame 25 is rotatably connected to the inner wall of the mounting base 28. A limit rod 24 is fixedly installed on the toothed ring 29. The limit rod 24 slides on the inner wall of the frame 25.

[0028] It should be further noted that the base 1 is a square plate, and the first motor 32 is fixedly installed on the base 1. The first motor 32 is set horizontally.

[0029] It should be further noted that the shaft end of the first motor 32 is fixedly connected to one end of the rotating rod 31, and the rotating rod 31 is set horizontally.

[0030] It should be further noted that the mounting plate 34 is a strip-shaped plate, the slider 33 is a square block, there are two sliders 33, and the sliders 33 are set horizontally.

[0031] It should be further noted that the second receiving ring 23 is vertically arranged and has a circular shape. The second motor 26 is fixedly installed on the side of the second receiving ring 23 and is horizontally arranged.

[0032] It should be further noted that a gear 27 is fixedly installed on the shaft end of the second motor 26, and the gear 27 meshes with the gear ring 29.

[0033] It should be further noted that the first receiving ring 22 is circular in shape, the first receiving ring 22 and the second receiving ring 23 are coaxial, the limiting rod 24 is cylindrical in shape, and the frame 25 is strip-shaped.

[0034] Working method: When the double-layer tube needs to be welded, the first motor 32 is started according to the length of the double-layer tube. The first motor 32 is provided with positive and negative threads, which will drive the two sliders 33 to move towards each other along the surface of the base 1. During the process of the two sliders 33 moving towards each other in a straight line, they will drive the two clamping mechanisms to move towards each other until the two clamping mechanisms move to the appropriate distance.

[0035] After the clamping mechanism moves to a suitable distance, the two pipes are passed through the first receiving ring 22 and the second receiving ring 23 respectively, and the welding positions of the two pipes are positioned directly below the welding assembly 4. Then, the second motor 26 is started, which drives the gear 27 to rotate. When the gear 27 rotates, it meshes with the gear ring 29, causing the gear ring 29 to rotate. When the gear ring 29 rotates, it drives the limiting rod 24 to perform cylindrical motion. When the limiting rod 24 performs circumferential motion, it causes the frame 25 to deflect around the mounting base 28 until the frame 25 clamps and fixes the pipes. After the pipes are clamped and fixed, the pipes are welded using the welding assembly 4. The above settings facilitate the clamping and fixing of pipes of different sizes and are beneficial for pipe welding.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic welding fixture for coaxial positioning of double-layer tubes, comprising a base (1), characterized in that: The base (1) is provided with an adjustment mechanism and a welding assembly (4). The adjustment mechanism is provided with a clamping mechanism. The adjustment mechanism includes a mounting plate (34). The mounting plate (34) is fixedly installed on the base (1). A rotating rod (31) is rotatably connected to the mounting plate (34). The rotating rod (31) is provided with positive and negative threads. A slider (33) is threadedly connected to the rotating rod (31). The slider (33) slides on the base (1). The clamping mechanism includes a receiving block (21), which is fixedly installed on one end of the slider (33). A first receiving ring (22) is fixedly installed on the receiving block (21). A toothed ring (29) is rotatably connected to the first receiving ring (22). A second receiving ring (23) is fixedly installed at the top of the receiving block (21). A mounting seat (28) is fixedly installed on the inner wall of the second receiving ring (23). A frame (25) is rotatably connected to the inner wall of the mounting seat (28). A limiting rod (24) is fixedly installed on the toothed ring (29). The limiting rod (24) slides on the inner wall of the frame (25).

2. The automatic welding fixture for coaxial positioning of double-layer tubes according to claim 1, characterized in that: The base (1) is a square plate, and a first motor (32) is fixedly installed on the base (1). The first motor (32) is horizontally arranged.

3. The automatic welding fixture for coaxial positioning of double-layer tubes according to claim 2, characterized in that: The shaft end of the first motor (32) is fixedly connected to one end of the rotating rod (31), and the rotating rod (31) is set horizontally.

4. The automatic welding fixture for coaxial positioning of double-layer tubes according to claim 1, characterized in that: The mounting plate (34) is a strip plate, the slider (33) is a square block, there are two sliders (33), and the sliders (33) are set horizontally.

5. The automatic welding fixture for coaxial positioning of double-layer tubes according to claim 1, characterized in that: The second receiving ring (23) is vertically arranged and has a circular shape. A second motor (26) is fixedly installed on the side of the second receiving ring (23) and the second motor (26) is horizontally arranged.

6. The automatic welding fixture for coaxial positioning of double-layer tubes according to claim 5, characterized in that: A gear (27) is fixedly installed on the shaft end of the second motor (26), and the gear (27) meshes with the gear ring (29).

7. The automatic welding fixture for coaxial positioning of double-layer tubes according to claim 1, characterized in that: The first receiving ring (22) is circular in shape, and the first receiving ring (22) and the second receiving ring (23) are coaxial. The limiting rod (24) is cylindrical in shape, and the frame (25) is strip-shaped.

Images