Circular tube straight seam welding equipment
By combining the support unit, alignment component, drive unit and clamping unit, the problem of the gap deviating from the welding torch trajectory in round pipe welding is solved, and a high-efficiency and high-quality welding effect is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG SANJI PRECISION CONTROL AUTOMATION EQUIPMENT CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-04-28
AI Technical Summary
In existing technologies, the weld seam deviates from the welding torch's trajectory during the welding process of round pipes, resulting in poor welding quality and low efficiency.
The system employs a support unit, an alignment component, a drive unit, and a clamping unit. The alignment component positions the gap to be welded so that it aligns with the trajectory of the welding torch. The drive unit drives the welding torch to move along a predetermined trajectory, and the clamping unit clamps the edges of the circular tubes on both sides of the gap.
It improves welding quality and work efficiency, ensures that the weld gap is consistent with the welding torch trajectory, and enhances welding accuracy and efficiency.
Smart Images
Figure CN224169061U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welding equipment technology, specifically to a straight seam welding device for round pipes. Background Technology
[0002] The manufacturing process of large-diameter thin-walled circular tubes typically involves bending steel plates into a circular tube shape and then welding the seams. However, some existing technologies use handheld welding torches for welding, which is inefficient and the weld quality is limited by the worker's skill level.
[0003] In other existing technologies, welding equipment is used to weld the aforementioned circular tubes. However, during the welding process, the gap to be welded deviates from the trajectory of the welding torch, resulting in poor welding quality. Repeated adjustments further reduce the efficiency of the welding operation.
[0004] How to ensure that the weld seam is aligned with the trajectory of the welding torch during round pipe welding is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0005] This invention addresses the aforementioned technical problems in the prior art by providing a circular tube straight seam welding device. Through the alignment component, the gap to be welded can be positioned so that it is consistent with the trajectory of the welding torch, thereby improving the welding quality and work efficiency.
[0006] To achieve the above technical objectives, this utility model provides a circular tube straight seam welding device, which has...
[0007] The support part has a top surface that serves as the working surface.
[0008] The alignment assembly includes a telescopic rod and an operating rod extending in the same direction as the support portion. Multiple telescopic rods are arranged in a straight line. The telescopic rods are slidably connected to the support portion, allowing them to be in an extended state (with the free end at the top of the telescopic rod located above the working surface) and a retracted state (with the free end located below the working surface). The operating rod has an operating portion corresponding to the telescopic rod. The operating portion includes a first surface that abuts against the lower end of the telescopic rod in the extended state and a second surface that abuts against the lower end of the telescopic rod in the retracted state. The height of the second surface is lower than the height of the first surface, and the first and second surfaces are connected by a beveled section.
[0009] A drive unit connected to the welding torch is used to drive the welding torch to move in order to weld a straight-lined weld seam on a circular tube formed by bending a steel plate; and
[0010] The clamping unit includes a first clamping group and a second clamping group, which are used to clamp the edges of the circular tubes on both sides of the gap to be welded during welding; the telescopic rod is located between the first clamping group and the second clamping group.
[0011] Furthermore, the lower end of the telescopic rod is provided with a spherical top.
[0012] Furthermore, the alignment assembly also includes a telescopic drive cylinder, the piston rod of which is connected to the operating rod for pushing the operating rod to reciprocate.
[0013] Furthermore, the drive unit includes a lateral drive assembly and a lifting drive assembly.
[0014] The lifting drive assembly is connected to the welding torch and is used to drive the welding torch to move up and down;
[0015] The lateral movement drive assembly is connected to the lifting drive assembly and is used to drive the lifting drive assembly and the welding torch to move horizontally.
[0016] Furthermore, the drive unit includes a transverse support, a transverse drive shaft, a transverse drive element, and a transverse guide rail;
[0017] The horizontal moving bracket extends horizontally, and the horizontal moving guide rail is fixedly connected to the horizontal moving bracket; the horizontal moving drive element is fixedly connected to the horizontal moving bracket; the output end of the horizontal moving drive element is connected to the horizontal moving drive shaft for driving the horizontal moving drive shaft to rotate; the horizontal moving drive shaft is threadedly connected to the lifting drive assembly, and when the horizontal moving drive shaft rotates, it can drive the lifting drive assembly to move horizontally.
[0018] The lifting drive assembly and the transverse guide rail are horizontally slidably connected.
[0019] Furthermore, the lifting drive assembly includes a lifting bracket, a lifting drive cylinder, a lifting piston rod, a lifting guide rail, and a lifting block;
[0020] The lifting bracket in the lifting drive assembly is horizontally slidably connected to the transverse guide rail, and the lifting bracket is threadedly connected to the transverse drive shaft.
[0021] The lifting drive cylinder is connected to the lifting bracket, the lifting guide rail is fixedly connected to the lifting bracket, and the lifting guide rail extends in the vertical direction;
[0022] The lifting block and the lifting guide rail are slidably connected up and down. The lifting piston rod of the lifting drive cylinder is connected to the lifting block and is used to drive the lifting block to move up and down.
[0023] The welding torch is fixedly connected to the lifting block.
[0024] Furthermore, the round pipe straight seam welding equipment also includes a headstock box, a base, and a worktable. The lower end of the headstock box is connected to the base, and the upper end of the headstock box is connected to the worktable, which is located directly above the base.
[0025] Furthermore, the first clamping group and the second clamping group each include a plurality of clamping cylinders, and the clamping cylinders are fixedly connected to the worktable.
[0026] One or more technical solutions provided in the embodiments of this utility model have at least the following technical effects or advantages:
[0027] This utility model discloses a circular tube straight seam welding device, which includes a support part, an alignment assembly, a drive unit, and a clamping unit. The device is used to weld the connecting seam on a circular tube formed by bending a steel plate; the support part supports the circular tube to be welded; the drive unit drives the welding torch to feed along a predetermined trajectory; and the clamping unit clamps the circular tube portions on both sides of the seam to be welded.
[0028] In this alignment assembly, the synchronous raising or lowering of multiple telescopic rods can be achieved by horizontally moving the operating lever, and the position can be maintained after a state switch. This alignment assembly can be used to correct the gap to be welded, aligning it with the trajectory of the welding torch, thereby improving work efficiency and weld quality. Attached Figure Description
[0029] Figure 1 This is a perspective view of the circular tube straight seam welding equipment of this utility model.
[0030] Figure 2 This is a structural diagram of the drive unit of the circular tube straight seam welding equipment of this utility model.
[0031] Figure 3 This is a front view of the circular pipe straight seam welding equipment of this utility model.
[0032] Figure 4 This is a cross-sectional view of the circular pipe straight seam welding equipment of this utility model.
[0033] Figure 5 for Figure 4 A magnified view of part A in the image.
[0034] Explanation of reference numerals in the attached figures
[0035] 1. Headboard; 2. Base; 3. Drive unit; 4. Lateral drive assembly; 40. Lateral support; 41. Lateral drive element; 42. Lateral drive shaft; 43. Lateral guide rail; 5. Lifting drive assembly; 50. Lifting support; 51. Lifting drive cylinder; 52. Lifting piston rod; 53. Lifting guide rail; 54. Lifting block; 6. Welding torch; 7. Clamping unit; 70. Clamping cylinder; 71. First clamping group; 72. Second clamping group; 8. Support part; 81. Working surface; 9. Alignment assembly; 91. Telescopic drive cylinder; 92. Operating lever; 920. Operating part; 921. Sloping part; 922. Second surface; 923. First surface; 93. Telescopic rod; 931. Spherical top; 932. Free end; 10. Worktable. Detailed Implementation
[0036] Other objects and advantages of this utility model will become clear by explaining the preferred embodiments of the present application below.
[0037] like Figures 1 to 5 As shown, a straight seam welding device for circular tubes includes a support part 8, an alignment component 9, a drive unit 3, and a clamping unit 7. This device is used to weld the connecting seam on a circular tube formed by bending a steel plate. The support part 8 supports the circular tube to be welded; the alignment component 9 corrects the weld seam to be aligned with the travel trajectory of the welding torch 6; the drive unit 3 drives the welding torch 6 to feed along a predetermined trajectory; and the clamping unit 7 clamps the circular tube portions on both sides of the weld seam.
[0038] In some embodiments, the round tube straight seam welding equipment further includes a headboard box 1, a base 2, and a workbench 10. The lower end of the headboard box 1 is connected to the base 2, and the upper end of the headboard box 1 is connected to the workbench 10. The workbench 10 is located directly above the base 2.
[0039] The top surface of the support part 8 is the working surface 81, which is used to place and support the round pipe to be welded during welding.
[0040] The alignment assembly 9 includes telescopic rods 93 and operating rods 92 extending in the same direction as the support 8. There are multiple telescopic rods 93 arranged in a straight line. The multiple telescopic rods 93 are driven to rise and fall synchronously by the operating rods 92 to position the gap of the round pipe to be welded.
[0041] The telescopic rod 93 is slidably connected to the support part 8, thus having an extended state in which the free end 932 at the top of the telescopic rod 93 is located above the working surface 81, and a retracted state in which the free end 932 is located below the working surface 81. In the extended state, the edge of the round tube on one side of the weld gap can abut against the multiple telescopic rods 93, thereby positioning the edge of the round tube to be welded and aligning it with the travel trajectory of the welding torch 6, improving welding accuracy; while in the retracted state, the telescopic rod 93 will not affect the subsequent processes.
[0042] The operating lever 92 is provided with an operating part 920 corresponding to the telescopic lever 93; the operating part 920 includes a first surface 923 that abuts against the lower end of the telescopic lever 93 in the extended state, and a second surface 922 that abuts against the lower end of the telescopic lever 93 in the retracted state; the height of the second surface 922 is lower than the height of the first surface 923, and the first surface 923 and the second surface 922 are connected by a beveled part 921. Figure 5 As shown, when the second surface 922 is opposite to the lower end of the telescopic rod 93, the telescopic rod 93 is allowed to descend. As the operating lever 92 gradually moves to the right, the telescopic rod 93 gradually moves upward under the action of the inclined surface 921. When the first surface 923 of the operating lever 92 moves to the lower side of the telescopic rod 93, the telescopic rod 93 is in a fully extended state and can be held in that position. Therefore, by moving the operating lever 92 horizontally, the synchronous rise or fall of multiple telescopic rods 93 can be achieved, as well as the maintenance of the position after the state switch. In some embodiments, the lower end of the telescopic rod 93 is provided with a spherical top 931, thereby reducing the resistance when sliding between the operating part 920 and the telescopic rod 93 and avoiding jamming problems.
[0043] In some embodiments, the alignment assembly 9 further includes a telescopic drive cylinder 91, the piston rod of which is connected to the operating rod 92 for reciprocating movement of the operating rod 92. The telescopic drive cylinder 91 may be, for example, a pneumatic cylinder.
[0044] The clamping unit 7 includes a first clamping group 71 and a second clamping group 72, which are respectively used to clamp the edges of the circular tubes on both sides of the weld seam during welding; the telescopic rod 93 is located between the first clamping group 71 and the second clamping group 72. In some embodiments, the first clamping group 71 and the second clamping group 72 each include a plurality of clamping cylinders 70, which are fixedly connected to the worktable 10. The clamping cylinder 70 is, for example, a pneumatic cylinder. The lower end of the piston rod of the pneumatic cylinder may be provided with a clamping block for clamping the steel plate, the clamping block being opposite to the working surface 81 to fix the workpiece.
[0045] A drive unit 3 connected to the welding torch 6 is used to drive the welding torch 6 to move in order to weld the straight-line weld seam on the circular tube formed by bending a steel plate. Specifically, in some embodiments, the drive unit 3 includes a lateral drive assembly 4 and a lifting drive assembly 5. The lifting drive assembly 5 is connected to the welding torch 6 and is used to drive the welding torch 6 to move up and down to approach the workpiece before welding or to move away from the workpiece after welding. The lateral drive assembly 4 is connected to the lifting drive assembly 5 and is used to drive the lifting drive assembly 5 and the welding torch 6 to move horizontally. Through the coordinated operation of the lateral drive assembly 4 and the lifting drive assembly 5, the welding torch 6 can be driven to follow a predetermined trajectory to complete the welding work on the weld seam on the circular tube.
[0046] In some embodiments, the drive unit 3 includes a transverse support 40, a transverse drive shaft 42, a transverse drive element 41, and a transverse guide rail 43; the transverse support 40 extends horizontally, and the transverse guide rail 43 is fixedly connected to the transverse support 40; the transverse drive element 41 is fixedly connected to the transverse support 40; the output end of the transverse drive element 41 is connected to the transverse drive shaft 42 for driving the transverse drive shaft 42 to rotate; the transverse drive shaft 42 is threadedly connected to the lifting drive assembly 5, and when the transverse drive shaft 42 rotates, it can drive the lifting drive assembly 5 to move horizontally; the lifting drive assembly 5 and the transverse guide rail 43 are horizontally slidably connected.
[0047] In some embodiments, the lifting drive assembly 5 includes a lifting bracket 50, a lifting drive cylinder 51, a lifting piston rod 52, a lifting guide rail 53, and a lifting block 54; the lifting bracket 50 in the lifting drive assembly 5 is horizontally slidably connected to the transverse guide rail 43, and the lifting bracket 50 is threadedly connected to the transverse drive shaft 42; the lifting drive cylinder 51 is connected to the lifting bracket 50, the lifting guide rail 53 is fixedly connected to the lifting bracket 50, and the lifting guide rail 53 extends vertically; the lifting block 54 is vertically slidably connected to the lifting guide rail 53, the lifting piston rod 52 of the lifting drive cylinder 51 is connected to the lifting block 54, and is used to drive the lifting block 54 to move up and down; the welding torch 6 is fixedly connected to the lifting block 54.
[0048] The working principle of a circular tube straight seam welding device according to an embodiment of this utility model is as follows: The alignment assembly 9 is operated to extend the plurality of telescopic rods 93 upwards to the extended state. The circular tube to be welded is placed on the support part 8, and the edge of one side of the weld gap is abutted against the plurality of telescopic rods 93. The first clamping assembly 71 is then operated to clamp the edge on that side. Then, by translating the operating rod 92, the telescopic rods 93 are changed from the extended state to the retracted state, and the edge of the other side of the weld gap on the circular tube is aligned with the edge of the first side to form the weld gap. Afterwards, the second clamping assembly 72 is operated to clamp the edge of the other side of the circular tube. Finally, the welding torch 6 is driven by the drive unit 3 to complete the welding operation.
[0049] The preferred technical solution of this application has been described in detail for the circular pipe straight seam welding equipment. However, it should be noted that, without departing from the spirit of this application, those skilled in the art can make any modifications, alterations, and variations based on the above disclosure. This application includes the above-described specific embodiments and any equivalent forms.
Claims
1. A straight seam welding equipment for round pipes, characterized in that, have: Support part (8), the top surface of the support part (8) is the working surface (81). The alignment assembly (9) includes telescopic rods (93) and an operating rod (92) extending in the same direction as the support (8). Multiple telescopic rods (93) are arranged in a straight line. The telescopic rods (93) are slidably connected to the support (8) vertically, thus having an extended state where the free end (932) at the top of the telescopic rod (93) is located above the working surface (81), and a retracted state where the free end (932) is located below the working surface (81). The operating rod (92)... 2) An operating part (920) corresponding to the telescopic rod (93) is provided on the upper part; the operating part (920) includes a first surface (923) that abuts against the lower end of the telescopic rod (93) in the extended state, and a second surface (922) that abuts against the lower end of the telescopic rod (93) in the retracted state; the height of the second surface (922) is lower than the height of the first surface (923), and the first surface (923) and the second surface (922) are connected by a beveled part (921); The drive unit (3), connected to the welding torch (6), is used to drive the welding torch (6) to move in order to weld the straight-line weld seam on a circular tube formed by bending a steel plate; and The clamping unit (7) includes a first clamping group (71) and a second clamping group (72), which are used to clamp the edges of the round tubes on both sides of the weld gap during welding; the telescopic rod (93) is located between the first clamping group (71) and the second clamping group (72).
2. The circular tube straight seam welding equipment as described in claim 1, characterized in that, The lower end of the telescopic rod (93) is provided with a spherical top (931).
3. The circular pipe straight seam welding equipment as described in claim 1, characterized in that, The alignment assembly (9) also includes a telescopic drive cylinder (91), the piston rod of which is connected to the operating rod (92) for pushing the operating rod (92) to reciprocate.
4. The circular pipe straight seam welding equipment as described in claim 1, characterized in that, The drive unit (3) includes a transverse drive assembly (4) and a lifting drive assembly (5). The lifting drive assembly (5) is connected to the welding torch (6) and is used to drive the welding torch (6) to move up and down; The lateral movement drive assembly (4) is connected to the lifting drive assembly (5) and is used to drive the lifting drive assembly (5) and the welding torch (6) to move horizontally.
5. The circular tube straight seam welding equipment as described in claim 4, characterized in that, The drive unit (3) includes a transverse support (40), a transverse drive shaft (42), a transverse drive element (41), and a transverse guide rail (43). The transverse support (40) extends horizontally, and the transverse guide rail (43) is fixedly connected to the transverse support (40); the transverse drive element (41) is fixedly connected to the transverse support (40); the output end of the transverse drive element (41) is connected to the transverse drive shaft (42) for driving the transverse drive shaft (42) to rotate; the transverse drive shaft (42) is threadedly connected to the lifting drive assembly (5), and when the transverse drive shaft (42) rotates, it can drive the lifting drive assembly (5) to move horizontally; The lifting drive assembly (5) and the transverse guide rail (43) can be horizontally slidably connected.
6. The circular tube straight seam welding equipment as described in claim 5, characterized in that, The lifting drive assembly (5) includes a lifting bracket (50), a lifting drive cylinder (51), a lifting piston rod (52), a lifting guide rail (53), and a lifting block (54). The lifting bracket (50) in the lifting drive assembly (5) is horizontally slidably connected to the transverse guide rail (43), and the lifting bracket (50) is threadedly connected to the transverse drive shaft (42). The lifting drive cylinder (51) is connected to the lifting bracket (50), the lifting guide rail (53) is fixedly connected to the lifting bracket (50), and the lifting guide rail (53) extends in the vertical direction; The lifting block (54) and the lifting guide rail (53) can be slidably connected up and down. The lifting piston rod (52) of the lifting drive cylinder (51) is connected to the lifting block (54) and is used to drive the lifting block (54) to move up and down. The welding torch (6) is fixedly connected to the lifting block (54).
7. The circular tube straight seam welding equipment as described in any one of claims 1 to 5, characterized in that, The circular tube straight seam welding equipment also includes a headboard (1), a base (2) and a workbench (10). The lower end of the headboard (1) is connected to the base (2), and the upper end of the headboard (1) is connected to the workbench (10). The workbench (10) is located directly above the base (2).
8. The circular pipe straight seam welding equipment as described in claim 7, characterized in that, The first clamping group (71) and the second clamping group (72) each include a plurality of clamping cylinders (70), and the clamping cylinders (70) are fixedly connected to the worktable (10).