A fully automatic TIG welding gun for robots

Abstract

The present invention belongs to the technical field of welding equipment, and proposes a fully automatic TIG welding gun for a robot, comprising an insulating shell and a tungsten electrode clamp, wherein the insulating shell has a working chamber, and the tungsten electrode clamp is arranged in the working chamber of the insulating shell; additionally provided are: a tungsten electrode conveying mechanism and a rotating mechanism, wherein the rotating mechanism is used to drive the tungsten electrode clamp to rotate; the tungsten electrode conveying mechanism comprises: a tungsten electrode jacket, a clamping ring, and a tungsten electrode clamping block, wherein the tungsten electrode jacket is slidably arranged in the tungsten electrode clamp, the clamping ring sleeve is arranged outside the tungsten electrode jacket, the tungsten electrode clamping block is arranged at the wire outlet end of the tungsten electrode clamp, and the tungsten electrode clamping block is used to clamp the tungsten electrode. Through the above technical scheme, the problem of low efficiency of manual trimming and replacement of tungsten electrodes in the prior art is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding equipment and relates to a fully automatic TIG welding gun for a robot. Background Art

[0002] The prototype of the robot welding gun first appeared in the 1970s. The robot welding gun is divided into two parts: the robot and the welding equipment. The robot can input complex welding instructions to achieve multi-angle welding. The welding equipment, driven by the robot, can weld the materials to be welded with high precision and high efficiency. In the prior art, the welding process can be carried out efficiently under the operation of the robot, but the welding equipment needs to be manually operated during the replacement of the tungsten electrode. The tungsten electrode will gradually wear out during the welding process, so it is necessary to adjust the length of the tungsten electrode leaking out of the welding gun, manually adjust and determine the extension length of the tungsten electrode, and grind the extended part of the tungsten electrode. Therefore, in the practical process of the robot welding gun, there will still be manual intervention, which is time-consuming and labor-intensive, with low production efficiency and limited automation to a certain extent. Based on the above problems, there is an urgent need for a robot welding gun with a higher degree of automation. Summary of the invention

[0003] The invention provides a fully automatic TIG welding gun for a robot, which solves the problem of low efficiency in manual trimming and replacement of tungsten electrodes in the prior art.

[0004] The technical solution of the present invention is achieved in this way:

[0005] A fully automatic TIG welding gun for a robot, comprising:

[0006] An insulating shell having a working cavity;

[0007] A tungsten pole clamp, wherein the tungsten pole clamp is arranged in the working cavity of the insulating shell;

[0008] Addition:

[0009] Tungsten electrode conveying mechanism;

[0010] A rotating mechanism, the rotating mechanism is used to drive the tungsten electrode clamp to rotate;

[0011] The tungsten electrode conveying mechanism comprises:

[0012] A tungsten electrode jacket, the tungsten electrode jacket being slidably disposed in the tungsten electrode clamp;

[0013] A clamping ring, wherein the clamping ring is sleeved on the outside of the tungsten electrode jacket;

[0014] A tungsten electrode clamping block is arranged at the wire outlet end of the tungsten electrode clamp and is used for clamping the tungsten electrode.

[0015] As a further technical solution, the tungsten electrode jacket comprises:

[0016] A sleeve, the sleeve being slidably disposed in the tungsten electrode clamp;

[0017] A plurality of clamping jaws are evenly distributed on one end of the sleeve.

[0018] As a further technical solution, the inner diameter of the clamping jaw remains unchanged, and its wall thickness gradually decreases from the wire outlet end to the other end;

[0019] The thickness of the clamping ring remains unchanged, and the inner diameter of the clamping ring gradually decreases from the wire outlet end to the other end, and the clamping ring is sleeved on the clamping claw;

[0020] The tungsten electrode clamp is provided with:

[0021] A conical inner hole, wherein the clamping ring is slidably arranged in the conical inner hole;

[0022] Also includes:

[0023] A first driving device is connected to the sleeve and is used to push the sleeve to move.

[0024] As a further technical solution, the tungsten electrode clamping block is provided with:

[0025] a tungsten electrode hole through which the tungsten electrode passes;

[0026] A groove, wherein the inner diameter of the groove is not less than the outer diameter of the sleeve, and the inner diameter of the groove is less than the outer diameter of the wire outlet end of the clamping ring;

[0027] A pin hole is located on the side of the tungsten electrode clamping block, and the pin hole is connected to the tungsten electrode hole.

[0028] As a further technical solution, the tungsten electrode conveying mechanism further includes:

[0029] A top block, the top block is slidably disposed in the tungsten electrode clamp and is located between the tungsten electrode clamp and the first driving device;

[0030] A spring is sleeved on the sleeve, one action end of the spring acts on the tungsten electrode clamp, and the other action end acts on the top block.

[0031] As a further technical solution, the rotating mechanism includes:

[0032] a first transmission wheel, wherein the first transmission wheel is arranged on the tungsten pole clamp;

[0033] a second transmission wheel, the second transmission wheel meshing with the first transmission wheel;

[0034] The second driving device is provided on which the second transmission wheel is arranged, and the second driving device drives the second transmission wheel to rotate.

[0035] As a further technical solution, it also includes:

[0036] A body shell, wherein the tungsten electrode clamp is arranged in the body shell;

[0037] A ceramic nozzle is connected to the body shell.

[0038] As a further technical solution, it also includes:

[0039] a first air screen, the first air screen being arranged at a wire outlet end of the body shell;

[0040] A screen, wherein the screen and the first air screen are arranged in sequence;

[0041] A second air screen is provided in sequence with the screen, and the second air screen is used to press the screen.

[0042] As a further technical solution, it also includes:

[0043] A fixing member, the fixing member being arranged on the body shell and used for fixing the tungsten electrode clamp;

[0044] An elastic washer is arranged between the fixing member and the tungsten electrode clamp.

[0045] The working principle and beneficial effects of the present invention are:

[0046] The present invention discloses a fully automatic TIG welding gun for a robot. The structure is that a tungsten electrode clamp is installed in a working chamber of an insulating shell, a tungsten electrode conveying mechanism is installed on the tungsten electrode clamp, and the tungsten electrode conveying mechanism is divided into a tungsten electrode jacket, a clamping ring and a tungsten electrode clamping block. The tungsten electrode jacket is slidably installed in the tungsten electrode clamp, the clamping ring sleeve is arranged on the outside of the tungsten electrode jacket, a tungsten electrode clamping block is installed at the wire outlet end of the tungsten electrode clamp, the tungsten electrode clamping block clamps the tungsten electrode, and a rotating mechanism is also installed on the tungsten electrode clamp. During the working process, the tungsten electrode clamp in the insulating shell clamps the tungsten electrode jacket, the tungsten electrode jacket slides in the tungsten electrode clamp, the tungsten electrode passes through the tungsten electrode jacket, and the clamping ring on the tungsten electrode jacket clamps the tungsten electrode jacket, so that the tungsten electrode jacket clamps the tungsten electrode, and the tungsten electrode clamp The sleeve moves, driving the tungsten electrode to move. When it moves to a certain position, the clamping ring is pushed open by the tungsten electrode clamping block and moves axially from the wire outlet end to the other end on the tungsten electrode sleeve. The clamping ring loses its restraining effect on the tungsten electrode sleeve, and the tungsten electrode clamping block fixes the tungsten electrode. The tungsten electrode sleeve and the clamping ring return to their initial positions. The rotating mechanism is connected to the tungsten electrode clamp to drive the tungsten electrode clamp to rotate, and the tungsten electrode clamp drives the tungsten electrode to rotate. Combined with the pushing function of the tungsten electrode conveying mechanism, the welding gun device can realize automatic wire changing and fixed-length repair functions. Compared with the prior art, it is more efficient than manual replacement of tungsten electrodes, further improves the degree of automation of the robot welding gun itself, and solves the problem of low efficiency of manual trimming and replacement of tungsten electrodes in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0048] Figure 1 It is an axonometric diagram of the overall structure of the present invention;

[0049] Figure 2 It is the front view of the overall structure of the present invention;

[0050] Figure 3 for Figure 2 The cross-sectional view along the AA direction;

[0051] Figure 4 for Figure 3 A schematic diagram of the state of the partial enlargement at C in the middle;

[0052] Figure 5 for Figure 3 Schematic diagram of the second state of the partial enlargement at C in the middle;

[0053] Figure 6 for Figure 3 Schematic diagram of the third state of the partial enlargement at C in the middle;

[0054] Figure 7 It is a top view of the overall structure of the present invention;

[0055] Figure 8 for Figure 7 The cross-sectional view along the BB direction;

[0056] Fig. 9 This is a schematic diagram of the tungsten electrode jacket structure of the present invention;

[0057] Fig.10 It is a schematic diagram of the tungsten electrode clamp structure of the present invention;

[0058] Fig.11 This is a schematic diagram of the structure of the tungsten electrode clamping block of the present invention;

[0059] In the figure: 1-insulating shell, 2-tungsten electrode clamp, 21-conical inner hole, 3-tungsten electrode conveying mechanism, 31-tungsten electrode jacket, 311-sleeve, 312-clamping claw, 32-clamping ring, 33-tungsten electrode clamping block, 331-tungsten electrode hole, 332-groove, 34-top block, 35-spring, 4-rotating mechanism, 42-first transmission wheel, 43-second transmission wheel, 44-second driving device, 5-first driving device, 6-body shell, 7-ceramic nozzle, 8-first air screen, 9-screen, 10-second air screen, 11-fixing member, 12-elastic gasket. DETAILED DESCRIPTION

[0060] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] like Figures 1 to 11 As shown, a fully automatic TIG welding gun for a robot comprises:

[0062] An insulating shell 1 having a working chamber;

[0063] A tungsten pole clamp 2, which is arranged in the working cavity of the insulating shell 1;

[0064] Addition:

[0065] Tungsten electrode conveying mechanism 3;

[0066] A rotating mechanism 4, the rotating mechanism 4 is used to drive the tungsten pole clamp 2 to rotate;

[0067] The tungsten electrode conveying mechanism 3 comprises:

[0068] A tungsten electrode jacket 31, which is slidably disposed in the tungsten electrode clamp 2;

[0069] A clamping ring 32, the clamping ring 32 is sleeved on the outside of the tungsten electrode jacket 31;

[0070] The tungsten electrode clamping block 33 is arranged at the wire outlet end of the tungsten electrode clamp 2, and is used for clamping the tungsten electrode.

[0071] In the present embodiment, a fully automatic TIG welding gun for a robot is disclosed, which has a structure that a tungsten electrode clamp 2 is installed in a working chamber of an insulating shell 1, a tungsten electrode conveying mechanism 3 is installed on the tungsten electrode clamp 2, and the tungsten electrode conveying mechanism 3 is divided into a tungsten electrode jacket 31, a clamping ring 32 and a tungsten electrode clamping block 33. The tungsten electrode jacket 31 is slidably installed in the tungsten electrode clamp 2, the clamping ring 32 is sleeved on the outside of the tungsten electrode jacket 31, a tungsten electrode clamping block 33 is installed at the wire outlet end of the tungsten electrode clamp 2, the tungsten electrode clamping block 33 clamps the tungsten electrode, and a rotating mechanism 4 is also installed on the tungsten electrode clamp 2. During the working process, the tungsten electrode clamp 2 in the insulating shell 1 clamps the tungsten electrode jacket 31, the tungsten electrode jacket 31 slides in the tungsten electrode clamp 2, the tungsten electrode passes through the tungsten electrode jacket 31, and the clamping ring 32 on the tungsten electrode jacket 31 clamps the tungsten electrode jacket 31, so that the tungsten electrode jacket 31 clamps the tungsten electrode, and the tungsten electrode jacket 31 moves, driving the tungsten electrode to move. When it moves to a certain position, the clamping ring 32 is pushed open by the tungsten electrode clamp 2 clamping block, and moves axially from the wire outlet end to the other end on the tungsten electrode jacket 31, and the clamping ring 32 loses its binding effect on the tungsten electrode jacket 31. The tungsten electrode is fixed by the tungsten electrode clamp 2 clamping block, and the tungsten electrode is returned to the initial position. The rotating mechanism 4 is connected to the tungsten electrode clamp 2 to drive the tungsten electrode clamp 2 to rotate, and the tungsten electrode clamp 2 drives the tungsten electrode to rotate. Combined with the pushing function of the tungsten electrode conveying mechanism 3, the welding gun device can realize automatic wire changing and fixed-length repair functions. Compared with the prior art, it is more efficient than manual replacement of tungsten electrodes, further improves the degree of automation of the robot welding gun itself, and solves the problem of low efficiency of manual trimming and replacement of tungsten electrodes in the prior art.

[0072] Further, the tungsten electrode jacket 31 comprises:

[0073] A sleeve 311, the sleeve 311 is slidably disposed in the tungsten electrode clamp 2;

[0074] The clamping jaws 312 are evenly distributed on one end of the sleeve 311 .

[0075] In this embodiment, the tungsten electrode jacket 31 is divided into a sleeve 311 and a clamping jaw 312. The tungsten electrode is installed in the sleeve 311. The sleeve 311 limits the conveying direction of the tungsten electrode. At one end of the sleeve 311, a plurality of clamping jaws 312 are installed. The clamping jaws 312 are evenly distributed on the end of the sleeve 311. There are gaps between adjacent clamping jaws 312. The clamping jaws 312 have a margin that can be contracted or opened. When the tungsten electrode needs to be extended from the sleeve 311, the clamping ring 32 is clamped, and the clamping is achieved by the clamping jaws 312. The tungsten electrode jacket 31 slides to realize the tungsten electrode conveying. When the tungsten electrode is conveyed to the right place, the clamping ring 32 is opened, the clamping jaws 312 are opened and released, and the tungsten electrode jacket 31 slides back to the initial position to achieve automatic fixed-length conveying.

[0076] Furthermore, the inner diameter of the clamping jaw 312 remains unchanged, and its wall thickness gradually decreases from the wire outlet end to the other end;

[0077] The thickness of the clamping ring 32 remains unchanged, and the inner diameter of the clamping ring 32 gradually decreases from the wire outlet end to the other end. The clamping ring 32 is sleeved on the clamping claw 312;

[0078] The tungsten electrode clamp 2 is provided with:

[0079] The conical inner hole 21, the clamping ring 32 is slidably disposed in the conical inner hole 21;

[0080] Also includes:

[0081] The first driving device 5 is connected to the sleeve 311 and is used to push the sleeve 311 to move.

[0082] In this embodiment, the inner diameter of the shape of the clamping jaw 312 remains unchanged, and the wall thickness gradually decreases from the wire outlet end of the tungsten electrode to the other end, so that the outer surfaces of the plurality of clamping jaws 312 distributed circumferentially form a conical surface, and a clamping ring 32 is sleeved on the clamping jaw 312. The thickness of the clamping ring 32 remains unchanged, and the inner diameter gradually decreases from the wire outlet end to the other end. The clamping ring 32 moves in the conical inner hole 21 of the tungsten electrode clamp 2. When moving toward the wire outlet end of the tungsten electrode jacket 31, the clamping ring 32 approaches the larger diameter end of the clamping jaw 312, and the clamping ring 32 is clamped at the thicker end of the clamping jaw, and the clamping jaw 312 contracts, and the clamping jaw 312 clamps the tungsten electrode. The first driving device 5 is connected to the tungsten electrode jacket 31, and the first driving device 5 drives the tungsten electrode jacket 31. When the clamping ring 32 moves toward the wire outlet end of the tungsten electrode clamp 2, the clamped tungsten electrode and the clamping ring 32 are driven to move. After reaching the conveying position, the clamping ring 32 is supported by the tungsten electrode clamping block 33. When the clamping ring 32 moves away from the tungsten electrode jacket 31, the clamping ring 32 is away from the end with a larger diameter of the clamping jaw 312, the clamping jaw 312 opens, and the clamping jaw 312 releases the tungsten electrode. The first driving device 5 drives the tungsten electrode jacket 31 to move away from the wire outlet end of the tungsten electrode clamp 2. The tungsten electrode is clamped by the tungsten electrode clamping block 33 to keep the position that has been conveyed unchanged. The tungsten electrode jacket 31 can be reset under the drive of the first driving device 5. The first driving device 5 is a kind of air cylinder and oil cylinder, which improves the degree of automation.

[0083] Further, the tungsten electrode clamping block 33 is provided with:

[0084] A tungsten electrode hole 331, through which the tungsten electrode passes;

[0085] A groove 332, the inner diameter of which is not less than the outer diameter of the sleeve 311, and the inner diameter of which is less than the outer diameter of the wire outlet end of the clamping ring 32;

[0086] The pin hole 333 is located on the side of the tungsten electrode clamping block 33 , and the pin hole 333 is connected to the tungsten electrode hole 331 .

[0087] In this embodiment, the tungsten electrode clamping block 33 is installed at the wire outlet end of the tungsten electrode clamp 2. A tungsten electrode hole 331 is provided in the middle of the tungsten electrode clamping block 33. The tungsten electrode passes through the tungsten electrode hole 331. The tungsten electrode hole 331 has a large friction force on the tungsten electrode. A pin hole 333 is provided on the side of the tungsten electrode clamping block 33. The pin hole 333 can adjust the clamping force through a pin. The friction force of the tungsten electrode hole 331 on the tungsten electrode is less than the friction force of the tungsten electrode when the tungsten electrode sleeve 31 is clamped, thereby ensuring that the tungsten electrode can pass through the tungsten electrode hole 331 on the tungsten electrode clamping block 33. At the same time, when the tungsten electrode sleeve 31 is reset and withdrawn, the tungsten electrode is clamped by the tungsten electrode clamping block 33, and the tungsten electrode remains in the moving position unchanged, thereby achieving the effect of fixed length extension.

[0088] Furthermore, the tungsten electrode conveying mechanism 3 also includes:

[0089] A top block 34, which is slidably disposed in the tungsten pole clamp 2 and is located between the tungsten pole clamp 31 and the first driving device 5;

[0090] The spring 35 is sleeved on the sleeve 311 , one end of the spring 35 acts on the tungsten electrode clamp 2 , and the other end of the spring 35 acts on the top block 34 .

[0091] In this embodiment, a top block 34 is further installed between the first telescopic device and the tungsten electrode jacket 31. The top block 34 slides in the tungsten electrode clamp 2. The tungsten electrode jacket 31 and the top block 34 are threadedly connected. A spring 35 is also sleeved on the tungsten electrode jacket 31. One end of the spring 35 acts on the tungsten electrode clamp 2, and the other end acts on the top block 34. When the first driving device 5 drives the top block 34 to slide in the tungsten electrode clamp 2, the top block 34 pushes the tungsten electrode jacket 31 to move. At the same time, the spring 35 is subjected to the pressure generated by the movement of the top block 34, and the spring 35 compresses The tungsten electrode jacket 31 contracts, and the tungsten electrode jacket 31 transports the tungsten electrode according to a preset length. When the tungsten electrode jacket 31 completes transporting the tungsten electrode, the first driving device 5 shortens, and the spring 35 stretches due to the elastic force. The spring 35 applies elastic force to the top block 34 to reset the top block 34. When the jaws 312 of the tungsten electrode jacket 31 return to the preset position, the reset stops. The reset of the spring 35 is relative to the reset driven by the first driving device 5, which can effectively protect the jaws 312 of the tungsten electrode jacket 31 to avoid damage to the tungsten electrode clamp 2 due to reduced accuracy of the driving device.

[0092] Further, the rotating mechanism 4 comprises:

[0093] A first transmission wheel 42, the first transmission wheel 42 is arranged on the tungsten pole clamp 2;

[0094] A second transmission wheel 43, the second transmission wheel 43 is meshed with the first transmission wheel 42;

[0095] The second driving device 44 , on which the second transmission wheel 43 is disposed, drives the second transmission wheel 43 to rotate.

[0096] In this embodiment, a tungsten pole clamping block 33 is installed at the wire outlet end of the tungsten pole clamp 2, and the tungsten pole clamping block 33 clamps the tungsten pole. A first transmission wheel 42 is installed at the other end of the tungsten pole clamp 2, and a second transmission wheel 43 is installed on the second driving device 44. The second transmission wheel 43 transmits to the first transmission wheel 42. The first transmission wheel 42 and the second transmission wheel 43 are one of a cylindrical gear, a bevel gear and a pulley. The second driving device 44 is a kind of motor. The second driving device 44 drives the second transmission wheel 43 to rotate, and the second transmission wheel 43 drives the first transmission wheel 42 to rotate. The first transmission wheel 42 is fixedly connected to the tungsten pole clamp 2, and the tungsten pole clamping block 33 is fixedly connected to the tungsten pole clamp 2. The whole body rotates synchronously, and the tungsten pole clamping block 33 and the tungsten pole sleeve 31 work together to drive the tungsten pole to rotate. After the tungsten pole is extended, the tungsten pole rotates to realize the grinding of the fixed-length tungsten pole.

[0097] Furthermore, it also includes:

[0098] A body shell 6, in which the tungsten pole clamp 2 is arranged;

[0099] Ceramic nozzle 7, ceramic nozzle 7 is connected to the body shell 6.

[0100] In this embodiment, the nozzle of the welding gun is a ceramic nozzle 7, which is installed on the main body shell 6. Compared with the traditional alloy nozzle, the ceramic nozzle 7 is more corrosion-resistant and high-temperature-resistant in harsh welding environments, thereby improving the service life of the equipment. There is a gap between the tungsten electrode clamp 2 and the main body shell 6, which reserves space for the rotation of the tungsten electrode clamp 2, and is assisted by a cooling system to cool the tungsten electrode, thereby extending the cooling effect of the tungsten electrode.

[0101] Furthermore, it also includes:

[0102] A first air screen 8, which is arranged at the wire outlet end of the main body shell 6;

[0103] The screen 9 and the first air screen 8 are arranged in sequence;

[0104] The second air screen 10 is arranged in sequence with the screen 9 , and the second air screen 10 is used to press the screen 9 .

[0105] In this embodiment, a first gas screen 8, a screen 9 and a second gas screen 10 are installed in sequence between the nozzle and the main body shell 6. The tungsten electrode passes through the above three components. During the welding process, the gas screen can improve the gas flow around the tungsten electrode. The gas flows through the first gas screen 8, the screen 9 and the second gas screen 10 to avoid the formation of eddy currents. While improving the welding quality, it also reduces the loss of the tungsten electrode and extends its service life.

[0106] Furthermore, it also includes:

[0107] A fixing member 11, which is disposed on the body shell 6 and is used to fix the tungsten electrode clamp 2;

[0108] The elastic washer 12 is arranged between the fixing member 11 and the tungsten electrode clamp 2 .

[0109] In this embodiment, a fixing member 11 is threadedly installed on the main body shell 6, and the fixing member 11 fixes the position of the tungsten pole clamp 2 so that the tungsten pole clamp 2 is tightly attached to the main body shell 6. The main body shell 6 and the tungsten pole clamp 2 are tightly attached to each other to play a conductive role. In addition, an elastic gasket 12 is also installed between the tungsten pole clamp 2 and the fixing member 11 to further strengthen the fixing effect.

[0110] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fully automatic TIG welding gun for a robot, comprising: An insulating shell (1), the insulating shell (1) having a working chamber; A tungsten pole clamp (2), the tungsten pole clamp (2) being arranged in the working cavity of the insulating shell (1); The feature is that: Tungsten electrode conveying mechanism (3); A rotating mechanism (4), the rotating mechanism (4) being used to drive the tungsten electrode clamp (2) to rotate; The tungsten electrode conveying mechanism (3) comprises: A tungsten electrode jacket (31), the tungsten electrode jacket (31) being slidably disposed in the tungsten electrode clamp (2); A clamping ring (32), the clamping ring (32) being sleeved on the outside of the tungsten electrode clamping sleeve (31); A tungsten electrode clamping block (33), the tungsten electrode clamping block (33) being arranged at the wire outlet end of the tungsten electrode clamp (2), the tungsten electrode clamping block (33) being used for clamping the tungsten electrode; The tungsten electrode jacket (31) comprises: a sleeve (311), the sleeve (311) being slidably disposed in the tungsten electrode clamp (2); A clamping jaw (312), wherein a plurality of the clamping jaws (312) are evenly distributed on one end of the sleeve (311); The inner diameter of the clamping jaw (312) remains unchanged, and the wall thickness thereof gradually decreases from the wire outlet end to the other end; The thickness of the clamping ring (32) remains unchanged, the inner diameter of the clamping ring (32) gradually decreases from the wire outlet end to the other end, and the clamping ring (32) is sleeved on the clamping jaw (312); The tungsten electrode clamp (2) is provided with: A conical inner hole (21), wherein the clamping ring is slidably disposed in the conical inner hole (21); Also includes: A first driving device (5), the first driving device (5) being connected to the sleeve (311) and being used to push the sleeve (311) to move; The tungsten electrode conveying mechanism (3) further comprises: A top block (34), the top block (34) being slidably disposed in the tungsten electrode clamp (2) and located between the tungsten electrode clamp sleeve (31) and the first driving device (5); a spring (35), wherein the spring (35) is sleeved on the sleeve (311), one acting end of the spring (35) acts on the tungsten electrode clamp (2), and the other acting end acts on the top block (34); The rotating mechanism (4) comprises: a first transmission wheel (42), the first transmission wheel (42) being arranged on the tungsten pole clamp (2); a second transmission wheel (43), the second transmission wheel (43) meshing with the first transmission wheel (42); A second driving device (44), wherein the second transmission wheel (43) is arranged on the second driving device (44), and the second driving device (44) drives the second transmission wheel (43) to rotate.

2. The fully automatic TIG welding gun for a robot according to claim 1, characterized in that: The tungsten electrode clamping block (33) is provided with: A tungsten electrode hole (331), through which the tungsten electrode passes; The groove (332) has an inner diameter no smaller than the outer diameter of the sleeve (311), and the inner diameter of the groove (332) is smaller than The outer diameter of the wire outlet end of the clamping ring (32); A pin hole (333), the pin hole (333) is located on a side surface of the tungsten electrode clamping block (33), and the pin hole (333) is communicated with the tungsten electrode hole (331).

3. The fully automatic TIG welding gun for a robot according to claim 1, characterized in that: Also includes: A main body shell (6), wherein the tungsten electrode clamp (2) is arranged in the main body shell (6); A ceramic nozzle (7), wherein the ceramic nozzle (7) is connected to the body shell (6).

4. A fully automatic TIG welding gun for a robot according to claim 3, characterized in that: Also includes: A first air screen (8), the first air screen (8) being arranged at a wire outlet end of the main body shell (6); A screen (9), the screen (9) and the first air screen (8) being arranged in sequence; A second air screen (10), wherein the second air screen (10) and the screen (9) are arranged in sequence, and the second air screen (10) is used to press the screen (9).

5. The fully automatic TIG welding gun for a robot according to claim 3, characterized in that: Also includes: A fixing member (11), the fixing member (11) being arranged on the main body shell (6) and being used for fixing the tungsten electrode clamp (2); An elastic washer (12), wherein the elastic washer (12) is arranged between the fixing member (11) and the tungsten electrode clamp (2).

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