Pipe inner wall butt joint TIG welding machine head

Abstract

The utility model provides a pipe inner wall butt joint TIG welding head, which relates to the field of TIG welding equipment, and comprises a mounting seat, a rotating mechanism, a transverse adjusting mechanism, a longitudinal adjusting mechanism and a welding gun, one end of a workpiece is coaxially connected with a positioning flange on the mounting seat by a worker, the longitudinal adjusting mechanism drives the welding gun to be inserted into the workpiece by a set depth, and the welding gun is driven by the rotating mechanism to rotate. The transverse adjusting mechanism drives the longitudinal adjusting mechanism and the welding gun to transversely adjust, at the moment, the welding gun is right opposite to a welding seam, after welding operation is started, the rotating mechanism drives the transverse adjusting mechanism, the longitudinal adjusting mechanism and the welding gun to rotate and adjust, and welding work is completed step by step. And accurate butt welding work of the inner wall of the small-diameter pipe can be efficiently completed, and the popularization value is high.

Description

Technical Field

[0001] The utility model relates to the field of TIG welding equipment, in particular to a TIG welding head for butt welding of the inner wall of a pipe. Background Art

[0002] Butt welding of the inner wall of a pipe by TIG plays a crucial role in modern manufacturing. During the TIG welding process, the protective effect of the inert gas can effectively isolate impurities in the air, preventing elements such as hydrogen, oxygen, and nitrogen from dissolving into the molten pool, thereby preventing the generation of pores during welding. At the same time, due to the strong stability of the arc, there is almost no spatter during the welding process, ensuring the beauty and density of the weld. Moreover, not only is the internal quality of the weld by TIG welding high, but its surface is also smooth and shiny, without the need for additional cleaning work. At the same time, TIG welding can achieve all-position welding, which means that high-quality welding operations can be achieved in any orientation, such as flat welding, vertical welding, horizontal welding, and overhead welding. This flexibility is difficult to match by many other welding methods.

[0003] The existing TIG welding heads for butt welding of the inner wall of a pipe generally have a low integration level of equipment and are commonly used for welding the inner wall of pipes with large specifications. Therefore, the equipment is large in volume and low in adjustment accuracy. How to accurately butt-weld the inner wall of small-diameter pipes has become an urgent problem for those skilled in the art to solve. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a TIG welding head for butt welding of the inner wall of a pipe. The TIG welding head of this patent has a high degree of integration, a small volume, and a high degree of freedom, and can efficiently complete the accurate butt-welding work of the inner wall of small-diameter pipes, with great promotion value.

[0005] The utility model is realized through the following technical solutions:

[0006] A TIG welding head for butt welding of the inner wall of a pipe includes a mounting base, a rotating mechanism, a transverse adjustment mechanism, a longitudinal adjustment mechanism, and a welding torch. The mounting base is connected to the free end of a robotic arm. The rotating mechanism, the transverse adjustment mechanism, and the longitudinal adjustment mechanism are arranged inside the mounting base. The rotating mechanism drives the transverse adjustment mechanism, the longitudinal adjustment mechanism, and the welding torch to rotate and adjust. The transverse adjustment mechanism drives the longitudinal adjustment mechanism and the welding torch to adjust transversely. The longitudinal adjustment mechanism drives the welding torch to adjust vertically. A positioning flange for fixing a workpiece is provided on the mounting base, and the welding torch passes through the positioning flange and inserts into the workpiece.

[0007] It can be seen that in the above technical solution, the worker coaxially connects one end of the workpiece with the positioning flange on the mounting base. The longitudinal adjustment mechanism drives the welding torch to insert into the workpiece to a set depth. The transverse adjustment mechanism drives the longitudinal adjustment mechanism and the welding torch to adjust transversely. At this time, the welding torch is facing the weld. After starting the welding operation, the rotation mechanism drives the transverse adjustment mechanism, the longitudinal adjustment mechanism and the welding torch to rotate and adjust, and gradually completes the welding work. The TIG welding head of this patent has a high degree of integration, a small volume, and a high degree of freedom, and can efficiently complete the precise butt welding work on the inner wall of small-diameter pipes, with great promotion value.

[0008] According to the above technical solution, preferably, the rotation mechanism includes a rotation drive motor and a gear disk. The gear disk is rotatably connected to the transverse plate in the mounting base through a bearing. The rotation drive motor is fixedly connected to the mounting base. The rotation drive motor drives the gear disk to rotate. The transverse adjustment mechanism is fixedly connected to the gear disk through an L-shaped connecting part. The central axis of the gear disk coincides with the central axis of the positioning flange.

[0009] It can be seen that in the above technical solution, the rotation drive motor drives the gear disk to rotate with high precision through gear meshing, and the transverse adjustment mechanism is fixedly connected to the gear disk through an L-shaped connecting part, so that the rotation mechanism can stably drive the transverse adjustment mechanism, the longitudinal adjustment mechanism and the welding torch to rotate and adjust. And because the central axis of the gear disk coincides with the central axis of the positioning flange, it can be ensured that when the rotation mechanism works, the other transverse adjustment mechanism and longitudinal adjustment mechanism do not need to operate, further improving the welding precision.

[0010] According to the above technical solution, preferably, the transverse adjustment mechanism includes a first slide rail, a first slide table, a first lead screw assembly and a transverse drive motor. The first slide rail and the first lead screw assembly are arranged in parallel on the connecting part. The first slide table is slidably connected to the first slide rail. The transverse drive motor is fixedly connected to the connecting part. The transverse drive motor drives the first lead screw assembly. The longitudinal adjustment mechanism is fixedly connected to the first slide table. The first lead screw assembly drives the first slide table, the longitudinal adjustment mechanism and the welding torch to slide transversely.

[0011] It can be seen that in the above technical solution, the transverse drive motor drives the first lead screw assembly, and the first lead screw assembly drives the first slide table, the longitudinal adjustment mechanism and the welding torch to slide transversely, thereby realizing the high-precision transverse adjustment of the welding torch.

[0012] According to the above technical solution, preferably, the longitudinal adjustment mechanism includes a second slide rail, a second slide table, a second lead screw assembly and a longitudinal drive motor. The second slide rail and the second lead screw assembly are arranged in parallel on the first slide table. The second slide table is slidably connected to the second slide rail. The longitudinal drive motor is fixedly connected to the first slide table. The longitudinal drive motor drives the second lead screw assembly. The welding torch is detachably and fixedly connected to the second slide table. The second lead screw assembly drives the second slide table and the welding torch to slide vertically.

[0013] It can be seen that in the above technical solution, the longitudinal drive motor drives the second lead screw assembly, and the second lead screw assembly drives the second slide table and the welding torch to slide vertically, thereby realizing the high-precision vertical adjustment of the welding torch.

[0014] According to the above technical solution, preferably, both the first lead screw assembly and the second lead screw assembly include a straight lead screw driven by a thread and a driving member, and the driving members are respectively fixedly connected to the inner sides of the first slide table and the second slide table.

[0015] The beneficial effects of the present utility model are as follows:

[0016] (1) The worker coaxially connects one end of the workpiece with the positioning flange on the mounting seat. The longitudinal adjustment mechanism drives the welding torch to insert into the workpiece to a set depth, and the transverse adjustment mechanism drives the longitudinal adjustment mechanism and the welding torch to adjust horizontally. At this time, the welding torch is facing the weld. After starting the welding operation, the rotation mechanism drives the transverse adjustment mechanism, the longitudinal adjustment mechanism and the welding torch to rotate and adjust, and gradually completes the welding work;

[0017] (2) The TIG welding head of this patent has a high degree of integration, a small volume, and a high degree of freedom, and can efficiently complete the precise butt welding work on the inner wall of small-diameter pipes, with great promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shows an isometric structural schematic diagram according to an embodiment of the present utility model;

[0019] Figure 2 Shows another isometric structural schematic diagram according to an embodiment of the present utility model;

[0020] Figure 3 Shows a front structural schematic diagram according to an embodiment of the present utility model;

[0021] Description of the reference numerals:

[0022] 1, mounting seat; 2, rotation mechanism; 3, transverse adjustment mechanism; 4, longitudinal adjustment mechanism; 5, welding torch; 6, positioning flange; 7, rotation drive motor; 8, gear disk; 9, connecting portion; 10, first slide rail; 11, first slide table; 12, first lead screw assembly; 13, transverse drive motor; 14, second slide table; 15, second lead screw assembly; 16, longitudinal drive motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to enable those skilled in the art of the present technology to better understand the technical solution of the present utility model, the present utility model will be further described in detail below with reference to the drawings and the best embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the utility model.

[0024] In the description of the utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the utility model.

[0025] As shown in the figure, the present utility model provides a TIG welding head for butt welding of the inner wall of a pipe, which includes a mounting base 1, a rotating mechanism 2, a lateral adjustment mechanism 3, a longitudinal adjustment mechanism 4 and a welding torch 5. The mounting base 1 is connected to the free end of a robotic arm. Among them, the rotating mechanism 2, the lateral adjustment mechanism 3 and the longitudinal adjustment mechanism 4 are arranged inside the mounting base 1. The rotating mechanism 2 drives the lateral adjustment mechanism 3, the longitudinal adjustment mechanism 4 and the welding torch 5 to rotate and adjust. The lateral adjustment mechanism 3 drives the longitudinal adjustment mechanism 4 and the welding torch 5 to make lateral adjustments. The longitudinal adjustment mechanism 4 drives the welding torch 5 to make vertical adjustments. A positioning flange 6 for fixing the workpiece is provided on the mounting base 1. The welding torch 5 passes through the positioning flange 6 and inserts into the workpiece. Among them, the rotating mechanism 2 includes a rotating drive motor 7 and a gear disk 8. The gear disk 8 is rotatably connected to a transverse plate inside the mounting base 1 through a bearing. The rotating drive motor 7 is fixedly connected to the mounting base 1. The rotating drive motor 7 drives the gear disk 8 to rotate. The lateral adjustment mechanism 3 is fixedly connected to the gear disk 8 through an L-shaped connecting portion 9. The central axis of the gear disk 8 coincides with the central axis of the positioning flange 6. The rotating drive motor 7 drives the gear disk 8 to rotate with high precision through gear meshing. And the lateral adjustment mechanism 3 is fixedly connected to the gear disk 8 through the L-shaped connecting portion 9, so that the rotating mechanism 2 can stably drive the lateral adjustment mechanism 3, the longitudinal adjustment mechanism 4 and the welding torch 5 to rotate and adjust. And because the central axis of the gear disk 8 coincides with the central axis of the positioning flange 6, it can be ensured that when the rotating mechanism 2 is working, the other lateral adjustment mechanism 3 and longitudinal adjustment mechanism 4 do not need to operate, further improving the welding precision. The lateral adjustment mechanism 3 includes a first slide rail 10, a first slide table 11, a first lead screw assembly 12 and a lateral drive motor 13. The first slide rail 10 and the first lead screw assembly 12 are arranged in parallel on the connecting portion 9. The first slide table 11 is slidably connected to the first slide rail 10. The lateral drive motor 13 is fixedly connected to the connecting portion 9. The lateral drive motor 13 drives the first lead screw assembly 12. The longitudinal adjustment mechanism 4 is fixedly connected to the first slide table 11. The first lead screw assembly 12 drives the first slide table 11, the longitudinal adjustment mechanism 4 and the welding torch 5 to slide laterally. The lateral sliding mentioned here refers to sliding along the radial direction of the workpiece. The lateral drive motor 13 drives the first lead screw assembly 12, and the first lead screw assembly 12 drives the first slide table 11, the longitudinal adjustment mechanism 4 and the welding torch 5 to slide laterally, thereby realizing high-precision lateral adjustment of the welding torch 5. The longitudinal adjustment mechanism 4 includes a second slide rail, a second slide table 14, a second lead screw assembly 15 and a longitudinal drive motor 16. The second slide rail and the second lead screw assembly 15 are arranged in parallel on the first slide table 11. The second slide table 14 is slidably connected to the second slide rail. The longitudinal drive motor 16 is fixedly connected to the first slide table 11. The longitudinal drive motor 16 drives the second lead screw assembly 15. The welding torch 5 is detachably and fixedly connected to the second slide table 14. The second lead screw assembly 15 drives the second slide table 14 and the welding torch 5 to slide vertically. The vertical sliding mentioned here refers to sliding along the axial direction of the workpiece. The longitudinal drive motor 16 drives the second lead screw assembly 15,The second lead screw assembly 15 drives the second slide table 14 and the welding torch 5 to slide vertically, thereby realizing the high-precision vertical adjustment of the welding torch 5.

[0026] The worker coaxially connects one end of the workpiece with the positioning flange 6 on the mounting seat 1. The longitudinal adjustment mechanism 4 drives the welding torch 5 to insert into the workpiece to a set depth. The transverse adjustment mechanism 3 drives the longitudinal adjustment mechanism 4 and the welding torch 5 to adjust transversely. At this time, the welding torch 5 is facing the weld. After starting the welding operation, the rotation mechanism 2 drives the transverse adjustment mechanism 3, the longitudinal adjustment mechanism 4 and the welding torch 5 to rotate and adjust, and gradually completes the welding work. The TIG welding head of this patent has a high degree of integration, a small volume, and a high degree of freedom, and can efficiently complete the precise butt welding work on the inner wall of a small-diameter pipe, with great promotion value.

[0027] Optionally, in a possible implementation manner, both the first lead screw assembly 12 and the second lead screw assembly 15 include a straight screw driven by a thread and a driving member, and the driving members are respectively fixedly connected to the inner sides of the first slide table 11 and the second slide table 14.

[0028] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A TIG welding head for butt welding of the inner wall of a pipe, characterized in that, It includes a mounting base, a rotating mechanism, a lateral adjustment mechanism, a longitudinal adjustment mechanism and a welding torch. The mounting base is connected to the free end of the robotic arm. The rotating mechanism, the lateral adjustment mechanism and the longitudinal adjustment mechanism are arranged inside the mounting base. The rotating mechanism drives the lateral adjustment mechanism, the longitudinal adjustment mechanism and the welding torch to rotate and adjust. The lateral adjustment mechanism drives the longitudinal adjustment mechanism and the welding torch to make lateral adjustment. The longitudinal adjustment mechanism drives the welding torch to make vertical adjustment. A positioning flange for fixing the workpiece is provided on the mounting base, and the welding torch passes through the positioning flange and inserts into the workpiece.

2. The butt TIG welding head for the inner wall of a pipe according to claim 1, characterized in that, The rotating mechanism includes a rotating drive motor and a gear disk. The gear disk is rotationally connected to the transverse plate inside the mounting base through a bearing. The rotating drive motor is fixedly connected to the mounting base. The rotating drive motor drives the gear disk to rotate. The lateral adjustment mechanism is fixedly connected to the gear disk through an L-shaped connecting part. The central axis of the gear disk coincides with the central axis of the positioning flange.

3. The inside-wall butt joint TIG welding head according to claim 2, characterized in that, The lateral adjustment mechanism includes a first slide rail, a first slide table, a first lead screw assembly and a lateral drive motor. The first slide rail and the first lead screw assembly are arranged in parallel on the connecting part. The first slide table is slidably connected to the first slide rail. The lateral drive motor is fixedly connected to the connecting part. The lateral drive motor drives the first lead screw assembly. The longitudinal adjustment mechanism is fixedly connected to the first slide table. The first lead screw assembly drives the first slide table, the longitudinal adjustment mechanism and the welding torch to slide laterally.

4. A TIG welding head for butt welding on the inner wall of a pipe according to claim 3, characterized in that, The longitudinal adjustment mechanism includes a second slide rail, a second slide table, a second lead screw assembly and a longitudinal drive motor. The second slide rail and the second lead screw assembly are arranged in parallel on the first slide table. The second slide table is slidably connected to the second slide rail. The longitudinal drive motor is fixedly connected to the first slide table. The longitudinal drive motor drives the second lead screw assembly. The welding torch is detachably and fixedly connected to the second slide table. The second lead screw assembly drives the second slide table and the welding torch to slide vertically.

5. A TIG welding head for butt welding on the inner wall of a pipe according to claim 4, wherein, Both the first lead screw assembly and the second lead screw assembly include a straight lead screw driven by a thread and a driving part. The driving parts are respectively fixedly connected to the inner sides of the first slide table and the second slide table.

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