An automatic welding device for double-ended steel pipes
By improving the limiting components and welding structure, the problem of axial movement during steel pipe welding was solved, the stability and quality of steel pipe welding were improved, weld alignment was ensured, and production efficiency was increased.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN PAIPU NEW MATERIAL CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-05-26
AI Technical Summary
In existing steel pipe welding equipment, the steel pipe may move axially during welding due to vibration or rotational inertia, resulting in weld misalignment and affecting welding quality.
The system employs a limiting assembly, including a meshing structure of a driving wheel and a driven wheel, combined with an elastic block and limiting bolts, to clamp and rotate the steel pipe. In conjunction with an arc-shaped bracket and support rollers, it ensures stable positioning of the steel pipe and achieves omnidirectional welding through internal and external welding joints.
It effectively prevents axial movement during steel pipe welding, ensures weld alignment, improves welding quality and consistency, and increases production efficiency.
Smart Images
Figure CN224273832U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welding equipment technology, specifically an automatic welding device for double-ended steel pipes. Background Technology
[0002] The automatic welding device for double-ended steel pipes is a device specifically designed to perform automated welding on both ends of a steel pipe simultaneously. The core objective of this type of device is to complete the welding task on both ends of the steel pipe in one clamping, significantly improving production efficiency, ensuring consistent welding quality, and reducing manual intervention.
[0003] Chinese utility model patent application CN222327103U discloses an automated steel pipe welding machine: It includes a guide rail frame, with mounting plates at both ends of the top of the guide rail frame. Each mounting plate has a threaded block at its bottom. A bidirectional screw is located inside the guide rail frame. An outer welding frame is located on top of the mounting plates, with an outer hydraulic rod at its top and an outer welding head at its bottom. An inner welding frame is located outside the mounting plates, with an electric push rod at its top, an inner hydraulic rod at its end, and an inner welding head at its bottom. By utilizing the bidirectional screw, adjusting motor, and threaded blocks, the distance between the two mounting plates can be adjusted. Combined with the inner and outer welding heads, as well as the outer and inner hydraulic rods and the electric push rod, the machine can adjust the distance according to the length and diameter of the steel pipe, making it suitable for different types of steel pipes.
[0004] However, existing technologies still have shortcomings:
[0005] The steel pipe is supported only by the arc-shaped bracket and rollers. During welding, the steel pipe may move axially due to vibration or rotational inertia, which will cause the weld to shift and affect the welding quality. Utility Model Content
[0006] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an automatic welding device for double-ended steel pipes, which solves the problem in the prior art where the steel pipe is only supported by an arc-shaped bracket and rollers, and the steel pipe may move axially during welding due to vibration or rotational inertia, resulting in weld misalignment and affecting welding quality.
[0007] To achieve the above objectives, this utility model proposes an automatic welding device for double-ended steel pipes, including a processing table. A pair of welding components are symmetrically and adjustablely arranged on the processing table. A limiting platform is fixedly arranged in the middle of the processing table, and a limiting component is arranged on the limiting platform. The limiting component includes a driving wheel and a driven wheel; the driven wheel and the driving wheel mesh. A second motor is fixedly arranged on the side of the limiting platform, and the output shaft of the second motor is fixedly connected to the driving wheel. The driven wheel, the driving wheel, and the limiting platform are rotatably connected. A lower arc-shaped plate and an upper arc-shaped plate are arranged inside the driven wheel. Elastic blocks are fixedly arranged between the upper arc-shaped plate and the driven wheel, and between the lower arc-shaped plate and the driven wheel. A pair of positioning plates are symmetrically fixedly arranged inside the driven wheel. Limiting bolts are threaded between the upper arc-shaped plate, the positioning plate, and the lower arc-shaped plate. The steel pipe body is arranged between the lower arc-shaped plate and the upper arc-shaped plate.
[0008] As a further embodiment of this utility model: the welding assembly includes a mounting plate, a bidirectional screw is rotatably mounted on the processing table, the mounting plate is threadedly connected to the bidirectional screw, and a pair of mounting plates are symmetrically arranged in opposite thread regions of the bidirectional screw.
[0009] As a further embodiment of this utility model: a pair of arc-shaped brackets are fixedly provided on the mounting plate, and the weld of the steel pipe body is located between the pair of arc-shaped brackets.
[0010] As a further embodiment of this utility model: a pair of support rollers are rotatably mounted on the arc-shaped bracket.
[0011] As a further embodiment of this utility model: an inner welding frame is fixedly provided on the side of the mounting plate, an electric push rod is fixedly provided on the inner welding frame, the output shaft of the electric push rod is fixedly connected to an inner hydraulic rod through a fixing block, and an inner welding head is provided at the bottom of the inner hydraulic rod.
[0012] As a further embodiment of this utility model: the inner weld head is disposed in the area above the pair of arc-shaped brackets.
[0013] As a further embodiment of this utility model: an outer welding frame is fixedly provided on the side of the mounting plate, an outer hydraulic rod is fixedly provided on the outer welding frame, an outer welding head is fixedly provided below the outer hydraulic rod, and the outer welding head is located above the inner welding head.
[0014] As a further embodiment of this utility model: a linkage shaft is fixedly provided between the support rollers on adjacent arc-shaped brackets.
[0015] As a further embodiment of this utility model: symmetrical slide rails are provided on the processing table, and pulleys are provided below the mounting plate, with the pulleys slidably disposed within the slide rails.
[0016] As a further embodiment of this utility model: a first motor is fixedly installed on the side of the processing table, and the output shaft of the first motor is fixedly connected to the bidirectional screw.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] By setting a limiting component, which includes a driving wheel and a driven wheel, the driven wheel and the driving wheel mesh. A second motor is fixedly installed on the side of the limiting platform, and the output shaft of the second motor is fixedly connected to the driving wheel. The driven wheel, the driving wheel and the limiting platform are rotatably connected. A lower arc plate and an upper arc plate are set inside the driven wheel. Elastic blocks are fixedly installed between the upper arc plate and the driven wheel, and between the lower arc plate and the driven wheel. A pair of positioning plates are symmetrically fixed inside the driven wheel. Limiting bolts are threaded between the upper arc plate, the positioning plate and the lower arc plate. The steel pipe body is set between the lower arc plate and the upper arc plate. Through the elastic action of the elastic blocks, the steel pipe body is clamped. Tightening the limiting bolts further limits the steel pipe body. The second motor is started, which drives the driving wheel to rotate, thereby driving the driven wheel that meshes with it to rotate, thereby driving the steel pipe body to rotate. This achieves the rotation of the steel pipe body after clamping and limiting, and works with the welding component to achieve all-round welding of the weld. Attached Figure Description
[0019] Figure 1 This is a processing state diagram of the present invention;
[0020] Figure 2 This is a three-dimensional structural diagram of the present invention;
[0021] Figure 3 This is a schematic diagram of the welding assembly of this utility model;
[0022] Figure 4 This is a schematic diagram of the limiting component of this utility model.
[0023] In the diagram: 1. Processing table; 2. Mounting plate; 3. Arc-shaped bracket; 4. Outer welding frame; 5. Outer hydraulic rod; 6. Inner welding frame; 7. Outer welding head; 8. First motor; 9. Bidirectional screw; 10. Slide rail; 11. Pulley; 12. Second motor; 13. Limiting platform; 14. Driven wheel; 15. Driving wheel; 16. Steel pipe body; 17. Support roller; 18. Inner hydraulic rod; 19. Inner welding head; 20. Electric push rod; 21. Linkage shaft; 22. Lower arc-shaped plate; 23. Upper arc-shaped plate; 24. Elastic block; 25. Limiting bolt; 26. Positioning plate. Detailed Implementation
[0024] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0025] like Figure 1-4 As shown, an automatic welding device for double-ended steel pipes includes a processing table 1, on which a pair of welding components are symmetrically arranged for synchronous welding of both ends of a steel pipe body 16. A limiting platform 13 is fixedly arranged in the middle of the processing table 1, and a limiting component is arranged on the limiting platform 13 for limiting and adjusting the steel pipe body 16. The limiting component includes a driving wheel 15 and a driven wheel 14. The driven wheel 14 and the driving wheel 15 mesh. A second motor 12 is fixedly arranged on the side of the limiting platform 13. The output shaft of the second motor 12 is fixedly connected to the driving wheel 15. The driven wheel 14 and the driving wheel 15 are rotatably connected to the limiting platform 13. A lower arc plate 22 and an upper arc plate 23 are arranged inside the driven wheel 14. The upper arc plate 23 is connected to the driven wheel 14. Elastic blocks 24 are fixedly installed between the upper arc plate 23 and the lower arc plate 22 and the driven wheel 14. A pair of positioning plates 26 are symmetrically fixed inside the driven wheel 14. Limit bolts 25 are threaded between the upper arc plate 23, the positioning plate 26 and the lower arc plate 22. The steel pipe body 16 is set between the lower arc plate 22 and the upper arc plate 23. The steel pipe body 16 is clamped by the elastic action of the elastic blocks 24. Tightening the limit bolts 25 further limits the steel pipe body 16. The second motor 12 is started to drive the driving wheel 15 to rotate, thereby driving the driven wheel 14 meshing with it to rotate, thereby driving the steel pipe body 16 to rotate, realizing the rotation of the steel pipe body 16 after clamping and limiting, and cooperating with the welding processing of the welding components.
[0026] In one embodiment of this invention, the welding assembly includes a mounting plate 2. A bidirectional screw 9 is rotatably mounted on a processing table 1. The mounting plate 2 is threadedly connected to the bidirectional screw 9. A pair of mounting plates 2 are symmetrically arranged in opposite thread regions of the bidirectional screw 9. A first motor 8 is fixedly mounted on the side of the processing table 1. The output shaft of the first motor 8 is fixedly connected to the bidirectional screw 9. To increase the stability of the movement of the mounting plate 2, slide rails 10 are symmetrically provided on the processing table 1. A pulley 11 is provided below the mounting plate 2 and slides within the slide rails 10. A pair of arc-shaped brackets 3 are fixedly mounted on the mounting plate 2. The arc-shaped brackets 3 support the steel pipe body 16. The weld seam of the steel pipe body 16 is located between the pair of arc-shaped brackets 3. A pair of support rollers 17 are rotatably mounted on the arc-shaped brackets 3 to maintain different... The consistency between the support rollers 17 on the arc-shaped bracket 3 is ensured. A linkage shaft 21 is fixedly installed between the support rollers 17 on adjacent arc-shaped brackets 3. An inner welding frame 6 is fixedly installed on the side of the mounting plate 2. An electric push rod 20 is fixedly installed on the inner welding frame 6. The output shaft of the electric push rod 20 is fixedly connected to an inner hydraulic rod 18 through a fixing block. An inner welding head 19 is provided at the bottom of the inner hydraulic rod 18. The inner welding head 19 is located in the area above the pair of arc-shaped brackets 3 and is used to weld the inside of the steel pipe body 16. An outer welding frame 4 is fixedly installed on the side of the mounting plate 2. An outer hydraulic rod 5 is fixedly installed on the outer welding frame 4. An outer welding head 7 is fixedly installed below the outer hydraulic rod 5 and is located above the inner welding head 19. It is used to weld the outer weld of the steel pipe body 16.
[0027] Working principle:
[0028] In use, the steel pipe body 16 is placed between the upper arc plate 23 and the lower arc plate 22 inside the driven wheel 14. The first motor 8 is started according to the length of the steel pipe body 16, driving a pair of welding components to move towards each other until the weld is between a pair of arc brackets 3. Then, the limiting bolt 25 is tightened to further limit the steel pipe body 16. The outer hydraulic rod 5 is used to drive the outer welding head 7 to weld the outside of the weld. The electric push rod 20 is used to push the inner hydraulic rod 18 to drive the inner welding head 19 to the welding position inside the steel pipe to perform synchronous welding inside the steel pipe body 16. The second motor 12 is started to drive the drive wheel 15 to rotate, thereby driving the driven wheel 14 meshing with it to rotate, thereby driving the steel pipe body 16 to rotate, realizing the rotation of the steel pipe body 16 after clamping and limiting. With the help of the welding components, the weld seam is welded from all directions.
[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0030] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.
Claims
1. An automatic welding device for double-ended steel pipes, characterized in that, The system includes a processing table (1), on which a pair of welding components are symmetrically and adjustablely arranged. A limiting platform (13) is fixedly arranged in the middle of the processing table (1), and a limiting component is arranged on the limiting platform (13). The limiting component includes a driving wheel (15) and a driven wheel (14). The driven wheel (14) and the driving wheel (15) mesh with each other. A second motor (12) is fixedly arranged on the side of the limiting platform (13). The output shaft of the second motor (12) is fixedly connected to the driving wheel (15). The driven wheel (14) and the driving wheel (15) are connected to the limiting platform (13). Rotary connection; the driven wheel (14) is provided with a lower arc plate (22) and an upper arc plate (23); elastic blocks (24) are fixedly provided between the upper arc plate (23) and the driven wheel (14), and between the lower arc plate (22) and the driven wheel (14); a pair of positioning plates (26) are symmetrically fixedly provided in the driven wheel (14); limit bolts (25) are threaded between the upper arc plate (23), the positioning plate (26), and the lower arc plate (22); the steel pipe body (16) is located between the lower arc plate (22) and the upper arc plate (23).
2. The automatic welding device for double-ended steel pipes according to claim 1, characterized in that, The welding assembly includes a mounting plate (2), and a bidirectional screw (9) is rotatably mounted on the processing table (1). The mounting plate (2) is threadedly connected to the bidirectional screw (9), and a pair of mounting plates (2) are symmetrically arranged in opposite thread regions of the bidirectional screw (9).
3. The automatic welding device for double-ended steel pipes according to claim 2, characterized in that, A pair of arc-shaped brackets (3) are fixedly installed on the mounting plate (2), and the weld of the steel pipe body (16) is located between the pair of arc-shaped brackets (3).
4. The automatic welding device for double-ended steel pipes according to claim 3, characterized in that, A pair of support rollers (17) are rotatably mounted on the arc-shaped bracket (3).
5. The automatic welding device for double-ended steel pipes according to claim 3, characterized in that, An inner welding frame (6) is fixedly provided on the side of the mounting plate (2), and an electric push rod (20) is fixedly provided on the inner welding frame (6). The output shaft of the electric push rod (20) is fixedly connected to an inner hydraulic rod (18) through a fixing block. An inner welding head (19) is provided at the bottom of the inner hydraulic rod (18).
6. The automatic welding device for double-ended steel pipes according to claim 5, characterized in that, The inner weld head (19) is located in the area above the pair of arc-shaped brackets (3).
7. The automatic welding device for double-ended steel pipes according to claim 5, characterized in that, An outer welding frame (4) is fixedly installed on the side of the mounting plate (2), an outer hydraulic rod (5) is fixedly installed on the outer welding frame (4), an outer welding head (7) is fixedly installed below the outer hydraulic rod (5), and the outer welding head (7) is located above the inner welding head (19).
8. The automatic welding device for double-ended steel pipes according to claim 4, characterized in that, A linkage shaft (21) is fixedly provided between the support rollers (17) on adjacent arc-shaped brackets (3).
9. The automatic welding device for double-ended steel pipes according to claim 2, characterized in that, The processing table (1) is symmetrically provided with slide rails (10), and a pulley (11) is provided below the mounting plate (2), and the pulley (11) is slidably disposed in the slide rail (10).
10. An automatic welding device for double-ended steel pipes according to claim 2, characterized in that, The processing table (1) is fixedly mounted on the side with a first motor (8), and the output shaft of the first motor (8) is fixedly connected to the bidirectional screw (9).