Self-adaptive pressing anti-deformation device for welding of longitudinal welded pipe

Abstract

The utility model relates to the field of longitudinal welded pipe welding, and discloses a self-adaptive compression anti-deformation device for longitudinal welded pipe welding, which comprises a workbench, the top of the workbench is fixedly connected with a limiting cylinder, the left end of the limiting cylinder is fixedly connected with a motor I, the output end of the motor I is fixedly connected with a cross rotating rod, and the cross rotating rod is fixedly connected with a rotating shaft. A sleeve is slidably connected to the outer wall of the cross rotating rod, a circular block is fixedly connected to the right end of the sleeve, a limiting cylinder is rotatably connected to the outer wall of the right end of the sleeve, a limiting groove is formed in the inner wall of the limiting cylinder, a sliding block is slidably connected to the outer wall of the limiting groove, and a supporting plate is fixedly connected to the top of the sliding block. According to the utility model, the self-adaptive support of the support plate on the welded pipes with different inner diameters can be realized, the welding seam deviation caused by stress deformation or position deviation of the welded pipes in the welding process is avoided, the positioning accuracy before welding is improved, meanwhile, support parts with different specifications do not need to be replaced, and the universality of the equipment on the welded pipes with various pipe diameters is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of straight seam welded pipe welding, and more particularly to an adaptive clamping and anti-deformation device for straight seam welded pipe welding. Background Technology

[0002] Straight seam welded pipe welding is a processing technology that involves welding steel plates or strips along the longitudinal length of the joint after they have been rolled into shape, thereby producing tubular products.

[0003] For welding pipes with different inner diameters and thicknesses in straight seam welding, the technology mainly involves optimizing the bevel design, compensating for differences in asymmetrical bevels, adding stepped transition sections or reducing joints, adjusting the welding process (such as layered welding, adaptive welding methods, controlling heat input, and using tooling fixtures for centering and fixing), etc., to balance dimensional differences, reduce deformation, and thus ensure welding quality.

[0004] In the welding process of straight seam welded pipes, most existing support structures are designed with fixed specifications. When welding pipes with different inner diameters, the corresponding support components must be replaced, which is not only cumbersome to operate, but also increases the cost of equipment use. At the same time, if the support structure does not match the inner diameter of the welded pipe, the welded pipe is prone to deformation or displacement due to unstable support during the welding process, which in turn causes the weld seam to shift and deform. To address these issues, an adaptive clamping anti-deformation device for straight seam welded pipe welding is proposed. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides an adaptive clamping and anti-deformation device for welding straight seam welded pipes, aiming to solve the problem that the existing welded pipe support structure cannot be flexibly adapted and adjusted according to different inner diameters.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: an adaptive clamping and anti-deformation device for welding straight seam welded pipes, comprising a workbench, a limiting cylinder fixedly connected to the top of the workbench, a motor fixedly connected to the left end of the limiting cylinder, a cross rotating rod fixedly connected to the output end of the motor, a sleeve slidably connected to the outer wall of the cross rotating rod, a circular block fixedly connected to the right end of the sleeve, a limiting cylinder rotatably connected to the outer wall of the right end of the sleeve, a limiting groove formed on the inner wall of the limiting cylinder, a sliding block slidably connected to the outer wall of the limiting groove, a support plate fixedly connected to the top of the sliding block, a sliding shaft fixedly connected to the right side of the limiting groove, a groove formed on the right side of the limiting cylinder, a circular block rotatably connected to the inner wall of the groove, an arc-shaped groove formed on the left end of the circular block, the inner wall of the arc-shaped groove slidably connected to the outer wall of the sliding shaft, and a groove fixedly connected to the right end of the limiting cylinder, the inner wall of the groove rotatably connected to the left end of the circular block.

[0007] As a further description of the above technical solution:

[0008] A support column is fixedly connected to the top of the workbench, and a support base is fixedly connected to the top of the support column.

[0009] As a further description of the above technical solution:

[0010] A limit rod is fixedly connected to the inner wall of the support base, and a threaded rod is rotatably connected to the inner wall of the support base.

[0011] As a further description of the above technical solution:

[0012] The outer wall of the threaded rod is threadedly connected to a slider via a threaded sleeve. The inner wall of the slider is slidably connected to the outer wall of the limiting rod. A second motor is fixedly connected to the left side of the support base, and the output end of the second motor is fixedly connected to the left side of the threaded rod.

[0013] As a further description of the above technical solution:

[0014] The slider is slidably connected to the inner surface of the support base, and an electric actuator is fixedly connected to the top of the slider. A welding gun is fixedly connected to the bottom of the inner rod of the electric actuator.

[0015] As a further description of the above technical solution:

[0016] A welded pipe is inserted into the inner wall of the limiting cylinder, and the welded pipe abuts against the outer wall of the support plate.

[0017] As a further description of the above technical solution:

[0018] A hydraulic rod is fixedly connected to the right side of the inner wall of the limiting cylinder, and the inner rod of the hydraulic rod is fixedly connected to the left side of the limiting cylinder.

[0019] As a further description of the above technical solution:

[0020] A telescopic rod is fixedly connected to the left end of the limiting cylinder, and the inner rod of the telescopic rod is fixedly connected to the left end of the limiting cylinder.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the support plate can adaptively support welded pipes with different inner diameters, avoiding weld seam displacement caused by deformation or positional shift of the welded pipe during welding, improving the accuracy of positioning before welding, and eliminating the need to replace support components of different specifications, thus enhancing the equipment's versatility for welded pipes of various diameters.

[0023] 2. In this utility model, the support plate can be flexibly adjusted along the length of the welded pipe, and the support point can be accurately moved to the center position of the long welded pipe. This avoids the long welded pipe from bending and deforming in the middle due to its own weight, ensuring the straightness of the overall axis of the welded pipe, providing uniform and stable support for straight seam welding throughout the entire length of the long welded pipe, and reducing the shape error of the welded pipe after welding. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the main structure of an adaptive clamping and anti-deformation device for welding straight seam welded pipes proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the limiting cylinder of the adaptive clamping and anti-deformation device for straight seam welded pipes proposed in this utility model;

[0026] Figure 3 This is a cross-sectional view of the internal structure of the limiting cylinder of the adaptive clamping and anti-deformation device for straight seam welded pipes proposed in this utility model.

[0027] Figure 4 This is a partial structural diagram of a circular block of an adaptive clamping and anti-deformation device for welding straight seam welded pipes proposed in this utility model;

[0028] Figure 5 This is a partial cross-sectional structural diagram of the support base and slider of an adaptive clamping and anti-deformation device for straight seam welded pipes proposed in this utility model.

[0029] Legend:

[0030] 1. Workbench; 2. Support column; 3. Support base; 4. Threaded rod; 5. Limiting rod; 6. Slider; 7. Electric actuator; 8. Welding torch; 9. Limiting cylinder; 10. Welding pipe; 11. Support plate; 12. Sliding block; 13. Sliding shaft; 14. Limiting groove; 15. Groove; 16. Circular block; 17. Arc groove; 18. Sleeve; 19. Cross rod; 20. Hydraulic rod; 21. Telescopic rod; 22. Motor 1; 23. Limiting cylinder; 24. Motor 2. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1-3The present invention provides an embodiment of an adaptive clamping and anti-deformation device for welding straight seam welded pipes, comprising a workbench 1, which provides basic support for the entire machine. A limiting cylinder 9 is fixedly connected to the top of the workbench 1, limiting the outer diameter of the welded pipe 10. A motor 22 is fixedly connected to the left end of the limiting cylinder 9, providing rotational power to a cross-shaped rotating rod 19. The output end of the motor 22 is fixedly connected to the cross-shaped rotating rod 19, which drives a sleeve 18 to rotate. The sleeve 18 is slidably connected to the outer wall of the cross-shaped rotating rod 19, providing power to a circular block 16. The circular block 16 is fixedly connected to the right end of the sleeve 18, and a limiting cylinder 23 is rotatably connected to the outer wall of the right end of the sleeve 18, providing a limit for a sliding block 12. A limiting groove 14 is formed on the inner wall of the limiting cylinder 23, providing a limiting function for the sliding block 12. A sliding block 12 is slidably connected to the outer wall of the positioning groove 14. The sliding block 12 provides support for the support plate 11. The top of the sliding block 12 is fixedly connected to the support plate 11. The support plate 11 provides support for the welded pipe 10 after it moves and extends. A sliding shaft 13 is fixedly connected to the right side of the positioning groove 14. The sliding shaft 13 provides power support for the sliding block 12. A groove 15 is opened on the right side of the positioning cylinder 23. The groove 15 provides positioning support for the circular block 16. The circular block 16 is rotatably connected to the inner wall of the groove 15. When the circular block 16 rotates, it can simultaneously squeeze multiple sliding shafts 13 through multiple arc grooves 17. An arc groove 17 is opened at the left end of the circular block 16. The arc groove 17 provides positioning for the sliding shaft 13. The inner wall of the arc groove 17 is slidably connected to the outer wall of the sliding shaft 13. A groove 15 is fixedly connected to the right end of the positioning cylinder 23. The inner wall of the groove 15 is rotatably connected to the left end of the circular block 16.

[0033] Reference Figure 1 , Figure 5 A support column 2 is fixedly connected to the top of the workbench 1, providing support for the support base 3. The support base 3 is fixedly connected to the top of the support column 2, providing support for the threaded rod 4, the limiting rod 5, and the second motor 24. The limiting rod 5 is fixedly connected to the inner wall of the support base 3, providing a limiting function for the slider 6. The threaded rod 4 is rotatably connected to the inner wall of the support base 3, providing sliding power for the slider 6. The slider 6 is threadedly connected to the outer wall of the threaded rod 4 through a threaded sleeve, providing support for the electric push rod 7. The inner wall of the slider 6 is slidably connected to the outer wall of the limiting rod 5. The second motor 24 is fixedly connected to the left side of the support base 3, providing power for the screw rod. The output end of the second motor 24 is fixedly connected to the left side of the threaded rod 4. The slider 6 is slidably connected to the inner surface of the support base 3. The electric push rod 7 is fixedly connected to the top of the slider 6, which can adjust the height of the welding gun 8. The welding gun 8 is fixedly connected to the bottom of the inner rod of the electric push rod 7, which can perform straight seam welding on the welding pipe 10.

[0034] Reference Figures 1-3A welded pipe 10 is inserted into the inner wall of the limiting cylinder 9. The welded pipe 10 is a pipe that needs to be welded with a straight seam. The welded pipe 10 abuts against the outer wall of the support plate 11. A hydraulic rod 20 is fixedly connected to the right side of the inner wall of the limiting cylinder 9. The hydraulic rod 20 pushes the limiting cylinder 23 to position the support plate 11 at the center of the welded pipe 10. The inner rod of the hydraulic rod 20 is fixedly connected to the left side of the limiting cylinder 23. A telescopic rod 21 is fixedly connected to the left end of the limiting cylinder 9. The telescopic rod 21 provides support for the limiting cylinder 23. The inner rod of the telescopic rod 21 is fixedly connected to the left end of the limiting cylinder 23.

[0035] Working principle: When welding pipe 10 is required, a weld pipe 10 with a specified outer diameter is placed inside the limiting cylinder 9. Motor 22 is activated, causing its output to rotate the cross rod 19. Since the inner wall of the sleeve 18 has a rectangular groove, and a corresponding rectangular block is fixedly connected to the outer wall of the cross rod 19, the rotation of the cross rod 19 causes the sleeve 18 to rotate synchronously. This, in turn, causes the sleeve 18 to rotate synchronously, causing the circular block 16 fixedly connected to its right end to move synchronously. This allows the circular block 16 to move within the groove 15. As the circular block 16 rotates, it can press the sliding shaft 13 through the arc groove 17 to slide outward on the inner wall of the limiting groove 14, so that the sliding shaft 13 drives the sliding block 12 and the support plate 11 to move synchronously. This allows the support plate 11 to support the welded pipe 10 according to its inner diameter, so as to facilitate the subsequent straight seam welding of the welded pipe 10. This enables the support plate 11 to adaptively support welded pipes 10 with different inner diameters, avoiding weld seam displacement caused by deformation or positional shift of the welded pipe 10 during the welding process, and improving the accuracy of pre-welding positioning.

[0036] When supporting a long welded pipe 10, the hydraulic rod 20 can be activated, causing the inner rod of the hydraulic rod 20 to push the limiting cylinder 23 to move. The inner rod of the telescopic rod 21 can move synchronously with the limiting cylinder 23. The telescopic rod 21 can limit and support the movement of the limiting cylinder 23. When the limiting cylinder 23 moves, it will drive the sleeve 18 to slide on the outer wall of the cross rotating rod 19. The movement of the limiting cylinder 23 can drive the support plate 11 to move to the center of the welded pipe 10, realizing the flexible adjustment of the support plate 11 along the length of the welded pipe 10. It can accurately move the support point to the center position of the long welded pipe 10, avoiding the bending and deformation of the middle part of the long welded pipe 10 due to its own weight, ensuring the straightness of the overall axis of the welded pipe 10, and providing uniform and stable support for straight seam welding throughout the entire length of the long welded pipe 10.

[0037] The inner rod of the electric actuator 7 can push the welding torch 8 down to the straight seam welding point of the welded pipe 10. By starting the motor 24, the output end of the motor 24 drives the threaded rod 4 to rotate, which causes the threaded sleeve to move the slider 6. The limiting rod 5 can limit the movement of the slider 6, so that the slider 6 slides on the inner surface of the support 3, thereby realizing the movement of the welding torch 8 and ensuring that the welding torch 8 is stably in a straight line to perform straight seam welding on the welded pipe 10, avoiding uneven speed and path deviation that occur when the welding torch 8 is manually pushed.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adaptive clamping and anti-deformation device for welding straight seam welded pipes, comprising a worktable (1), characterized in that: The top of the workbench (1) is fixedly connected to a limiting cylinder (9). A motor (22) is fixedly connected to the left end of the limiting cylinder (9). A cross-shaped rotating rod (19) is fixedly connected to the output end of the motor (22). A sleeve (18) is slidably connected to the outer wall of the cross-shaped rotating rod (19). A circular block (16) is fixedly connected to the right end of the sleeve (18). A limiting cylinder (23) is rotatably connected to the outer wall of the right end of the sleeve (18). A limiting groove (14) is formed on the inner wall of the limiting cylinder (23). A sliding block (12) is slidably connected to the outer wall of the limiting groove (14). The top of the sliding block (12) is fixedly connected to a support plate (11), the right side of the limiting groove (14) is fixedly connected to a sliding shaft (13), the right side of the limiting cylinder (23) is provided with a groove (15), the inner wall of the groove (15) is rotatably connected to a circular block (16), the left end of the circular block (16) is provided with an arc groove (17), the inner wall of the arc groove (17) is slidably connected to the outer wall of the sliding shaft (13), the right end of the limiting cylinder (23) is fixedly connected to a groove (15), the inner wall of the groove (15) is rotatably connected to the left end of the circular block (16).

2. The adaptive clamping and anti-deformation device for straight seam welded pipe welding according to claim 1, characterized in that: The workbench (1) is fixedly connected to a support column (2) at the top, and the support column (2) is fixedly connected to a support base (3) at the top.

3. The adaptive clamping and anti-deformation device for straight seam welded pipe welding according to claim 2, characterized in that: The inner wall of the support base (3) is fixedly connected to a limit rod (5), and the inner wall of the support base (3) is rotatably connected to a threaded rod (4).

4. The adaptive clamping and anti-deformation device for straight seam welded pipe welding according to claim 3, characterized in that: The outer wall of the threaded rod (4) is threadedly connected to the slider (6) via a threaded sleeve. The inner wall of the slider (6) is slidably connected to the outer wall of the limiting rod (5). The left side of the support base (3) is fixedly connected to the second motor (24), and the output end of the second motor (24) is fixedly connected to the left side of the threaded rod (4).

5. The adaptive clamping and anti-deformation device for straight seam welded pipe welding according to claim 4, characterized in that: The slider (6) is slidably connected to the inner surface of the support base (3). An electric push rod (7) is fixedly connected to the top of the slider (6), and a welding gun (8) is fixedly connected to the bottom of the inner rod of the electric push rod (7).

6. The adaptive clamping and anti-deformation device for straight seam welded pipe welding according to claim 1, characterized in that: A welded pipe (10) is inserted into the inner wall of the limiting cylinder (9), and the welded pipe (10) abuts against the outer wall of the support plate (11).

7. The adaptive clamping and anti-deformation device for straight seam welded pipe welding according to claim 1, characterized in that: A hydraulic rod (20) is fixedly connected to the right side of the inner wall of the limiting cylinder (9), and the inner rod of the hydraulic rod (20) is fixedly connected to the left side of the limiting cylinder (23).

8. The adaptive clamping and anti-deformation device for straight seam welded pipe welding according to claim 1, characterized in that: The left end of the limiting cylinder (9) is fixedly connected to a telescopic rod (21), and the inner rod of the telescopic rod (21) is fixedly connected to the left end of the limiting cylinder (23).

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