CN106001861A - Efficient water-cooling argon arc welding gun - Google Patents

Abstract

The invention provides an efficient water-cooling argon arc welding gun. The efficient water-cooling argon arc welding gun is composed of a handle, a gun head body, a gun head body protecting sleeve, a rear cap, a tungsten electrode rod, a tungsten electrode clamp, an inner heat insulation sleeve, an outer heat insulation sleeve, an outer connection sleeve, a spray nozzle connection ring and a ceramic spray nozzle, wherein the middle of the handle is provided with a gas inlet pipe, a water inlet pipe and a water outlet pipe; the right end of the handle is connected with a machine head body outer sleeve covering the exterior of the gun head body; the lower end of the gas inlet pipe is connected with a gas inlet hole in the side face of the upper end of the gun head body; the gas inlet hole communicates with a vertical through hole in the center of the gun head body; the tungsten electrode clamp is arranged in the middle of the vertical through hole; the tungsten electrode rod penetrates a middle hole of the tungsten electrode clamp; an annular groove is machined in the middle of the outer circle of the gun head body; the exterior of the annular groove is closely sleeved with the inner circle of the inner heat insulation sleeve, and the annular groove is closed into a water-cooling sleeve; the water inlet pipe and the water outlet pipe communicate with the water-cooling sleeve; the outer heat insulation sleeve is arranged outside the inner heat insulation sleeve; the exterior of the outer heat insulation sleeve and the inner circle at the upper end of the ceramic spray nozzle are connected together in a sleeving manner; the outer connection sleeve is arranged at the lower end of the gun head body protecting sleeve; the spray nozzle connection ring is connected to the lower end of the outer connection sleeve and connected with the outer circle at the upper end of the ceramic spray nozzle in a thread screwing manner; and the rear cap is arranged at the top end of the gun head body.

Description

A high-efficiency water-cooled argon arc welding torch

technical field

The invention relates to the field of welding technology, in particular to a high-efficiency water-cooled argon arc welding torch.

Background technique

Argon tungsten arc welding is a kind of gas shielded welding that uses inert gas as a shield. It is a process of welding by heating the base metal and filler material with the help of the high-temperature heat of the arc generated between the tungsten electrode and the weldment. It is arc welding equipment composed of welding machine, welding torch, control box, water and electricity, ground wire and other ground wire clamps, and tungsten auxiliary device. The traditional way of connecting the positive and negative poles of the power supply of the welding torch and the workpiece depends on the different materials to be welded. Usually, the gas is used as the shielding gas, and the tungsten electrode is used as the non-melting electrode. The base metal is heated and melted to achieve welding. It is suitable for small components and thin walls. The welding of materials is characterized by a stable arc and easy control of the molten pool, and is widely used in precision welding and welding of high-temperature and high-pressure components. Due to the small working current and low welding temperature of ordinary welding guns, the welding effect is poor. When used in special welding, it will cause welding difficulties and affect welding efficiency. There are problems such as slow speed, non-concentrated temperature, high equipment investment cost, and large consumption of shielding gas. defect. The air flow is difficult to control, the heat dissipation of the welding torch is poor, the tungsten electrode is severely ablated, the arc cannot be accurately controlled, and the operation is also troublesome.

Contents of the invention

The technical task of the present invention is to solve the deficiencies of the prior art and provide a new type of high-efficiency water-cooled argon arc welding torch.

The technical solution of the present invention is realized in the following manner. A high-efficiency water-cooled argon arc welding torch has a structure consisting of a handle, a torch head body, a torch head body sheath, a rear cap, a tungsten pole rod, a tungsten pole clip, and an inner heat insulation sleeve, outer heat insulation sleeve, outer connection sleeve, nozzle connection ring and ceramic nozzle, wherein, the middle of the handle is provided with an air inlet pipe, water inlet pipe and outlet pipe, and the right end of the handle is connected with the machine head body that covers the outside of the gun head body. The outer jacket is connected, the lower end of the air inlet pipe is connected with the air inlet hole on the upper side of the gun head body, the air inlet hole is connected with the vertical through hole in the center of the gun head body, a tungsten pole clip is set in the middle of the vertical through hole, and tungsten is worn in the middle hole of the tungsten pole clip. Excellent, the middle of the outer circle of the gun head body is processed with an annular groove, and the inner circle of the inner heat insulation sleeve is tightly fitted on the outside of the annular groove to seal the annular groove into a water cooling jacket. The water inlet pipe and outlet pipe are connected with the water cooling jacket Connected, the outside of the inner heat insulation sleeve is provided with an outer heat insulation sleeve, and a heat insulation space is formed between the inner heat insulation sleeve and the outer heat insulation sleeve. The lower end of the sheath is provided with an outer connecting sleeve, the lower end of the outer connecting sleeve is connected to the nozzle connecting ring, the connecting ring and the outer circle of the upper end of the ceramic nozzle are threaded together, and the rear cap is arranged on the top of the gun head body.

In the high-efficiency water-cooled argon arc welding torch, heat dissipation fins are vertically processed in the middle of the outer circle of the tungsten electrode clamp, and annular air grooves and vertical air guide grooves are processed at both ends. The trachea is connected, the lower end of the tungsten clamp is processed with tapered jaws, and the tapered jaws are symmetrically and vertically processed with jaw slits. The annular air groove at the lower end communicates with the central lumen of the tungsten clamp and the ceramic nozzle through the vertical air guide groove.

In the above-mentioned high-efficiency water-cooled argon arc welding torch, two annular grooves are arranged above and below the outer circle of the tapered jaw at the lower end of the tungsten pole clamp, and an air screen is connected to the annular grooves.

In the high-efficiency water-cooled argon arc welding torch, the gas screen is composed of a shell and a screen. The upper and lower ends of the shell are open, the inner circle of the upper opening is provided with a convex ring, and the lower opening is inlaid with an annular screen. The convex ring and the The central hole of the screen mesh is clamped together with two ring grooves arranged up and down below the outer circle of the tapered jaw at the lower end of the tungsten pole clamp respectively.

In the high-efficiency water-cooled argon arc welding torch, the center of the tungsten pole clamp is a tubular cavity, and the outer circle of the top end is processed with an external thread to connect with the nut at the lower end of the back cap. The clamping jaws and the tapered hole at the lower end of the torch head form a tungsten rod clamping mechanism.

In the above-mentioned high-efficiency water-cooled argon arc welding torch, the inner circle of the lower end of the gun head body is processed with a tapered hole matching the lower end cone of the tungsten pole clamp, and the outer circle of the upper end of the gun head body is provided with a tungsten pole clamp positioning bolt. The bolt passes through the gun head body and is connected with the upper annular air groove of the tungsten pole clamp.

In the above-mentioned high-efficiency water-cooled argon arc welding torch, the inner circle at the upper end of the outer connecting sleeve is connected with the lower end of the outer sleeve of the gun head body through threads, the inner circle of the outer connecting sleeve is also provided with an inner convex ring, and the outer circle of the inner heat insulating sleeve is provided in the middle There is an outer convex ring, and the inner convex ring is connected with the lower part of the outer convex ring to fix the gun head body and the inner heat insulation sleeve in the middle of the bottom of the gun head body coat.

In the above-mentioned high-efficiency water-cooled argon arc welding torch, the lower end of the outer circle of the outer connecting sleeve is provided with an annular groove, and the upper opening of the connecting ring is provided with an inward flanging, and the inward flanging is slidably connected with the annular groove.

In the high-efficiency water-cooled argon arc welding torch, the upper inner circle of the ceramic nozzle is a tapered mouth, the taper of which matches the outer circle of the outer heat-insulation sleeve, and the inner circle of the upper end of the outer heat-insulation sleeve is threaded and insulated Sleeve connection, the outer circle of the inner heat insulation sleeve and the inner circle of the outer inner heat insulation sleeve form an outer heat insulation space, the lower end of the ceramic nozzle is provided with a tubular nozzle, and the inner hole of the tubular nozzle and the tungsten rod form a ring-shaped protective gas cooling channel .

A high-efficiency water-cooled argon arc welding torch of the present invention has the following outstanding beneficial effects :

Scientific design, easy disassembly, convenient assembly, good heat dissipation effect, saving protective gas, can greatly increase the current intensity, increase the welding temperature, reduce the cost of use, and prolong the service life.

Description of drawings

Figure 1 is a schematic diagram of the assembly structure;

Figure 2 is a schematic diagram of the connection structure between the air screen and the tungsten clamp;

Figure 3 is a schematic diagram of the appearance structure of the tungsten clip;

Fig. 4 is a schematic diagram of the longitudinal section structure of the tungsten pole clip.

The marks in the attached drawings indicate respectively: rear cap 1, nut 2, external thread 3, torch head body sheath 4, tungsten clamp positioning bolt 5, torch head body 6, inner heat insulation sleeve 7, welding torch head 8, outer connection Sleeve 9, outer heat insulation sleeve 10, nozzle connection ring 11, tungsten pole clip 12, ceramic nozzle 13, tungsten pole rod 14, heat dissipation channel 15, tapered jaw 16, outer heat insulation space 17, inner heat insulation space 18, Radiating fins 19, handle 20, air intake pipe 21, housing 22, annular screen 23, jaw slit 24, annular air groove 25, vertical air guiding groove 26, water inlet pipe 27, water outlet pipe 28.

detailed description

A high-efficiency water-cooled argon arc welding torch of the present invention will be further described in detail below in conjunction with the accompanying drawings.

A high-efficiency water-cooled argon arc welding torch of the present invention is mainly composed of a handle 20, a torch head body 6, a torch head body sheath 4, a rear cap 1, a tungsten pole rod 14, a tungsten pole clamp 12, and an inner heat insulation sleeve 7 , an outer heat insulating sleeve 10, an outer connecting sleeve 9, a nozzle connecting ring 11 and a ceramic nozzle 13, wherein an air inlet pipe, a water inlet pipe and an outlet pipe 21 are arranged in the middle of the handle 20, and the right end of the handle 20 is covered with the gun head body 6 The outer machine head body jacket 4 is connected, and the lower end of the air inlet pipe 21 is connected with the air inlet hole on the upper side of the gun head body 6, and the air inlet hole is connected with the vertical through hole in the center of the gun head body 6, and a tungsten clip is arranged in the middle of the vertical through hole 12. A tungsten rod 14 is pierced in the middle hole of the tungsten clamp 12, and an annular groove is processed in the middle of the outer circle of the gun head body 6, and the inner circle of the inner heat insulating sleeve 7 is tightly fitted on the outside of the annular groove to seal the annular groove. Closed into a water cooling jacket 17, the water inlet pipe 24 and the water outlet pipe 25 communicate with the water cooling jacket 17, and the outer heat insulation jacket 7 is provided with an outer heat insulation jacket 10, and the inner heat insulation jacket 7 and the outer heat insulation jacket 10 are formed The inner heat insulation space 18, the outer heat insulation sleeve 10 and the inner circle of the upper end of the ceramic nozzle 13 are sleeved together, the lower end of the gun head body sheath 4 is provided with an outer connection sleeve 9, and the lower end of the outer connection sleeve 9 is connected to the nozzle connection ring 11, the nozzle The connecting ring 11 and the outer circle of the upper end of the ceramic nozzle 13 are screwed together, and the rear cap 1 is arranged on the top of the gun head body 6 .

In the above-mentioned high-efficiency water-cooled argon arc welding torch, the middle part of the outer circle of the tungsten pole clip 12 is vertically processed with heat dissipation fins 19, and the two ends are processed with annular air grooves 25 and vertical air guide grooves 26, and the annular air groove 25 at the upper end passes through the vertical The air guide groove 26 communicates with the air intake pipe 21, the lower end of the tungsten pole clamp 12 is processed with a tapered jaw 16, and the tapered jaw 16 is symmetrically and vertically processed with a jaw slit 25, and the annular air groove 25 at the lower end passes through the vertical air guide groove 26 communicates with the central lumen of the tungsten pole holder 12 and the ceramic nozzle 13.

In the above-mentioned high-efficiency water-cooled argon arc welding torch, two annular grooves are arranged above and below the outer circle of the tapered jaw 16 at the lower end of the tungsten pole clamp, and an air screen is connected to the annular grooves.

In the high-efficiency water-cooled argon arc welding torch, the gas screen is composed of a shell and a screen. The upper and lower ends of the shell 22 are open, and the inner circle of the upper opening is provided with a convex ring, and the lower opening is inlaid with an annular screen 23. The central holes of the ring and the screen 23 are respectively clamped together with the two ring grooves set up and down below the outer circle of the tapered jaw at the lower end of the tungsten pole holder 12, and the lower end of the tungsten rod 14 passes downward from the middle of the ring screen 23 .

In the above-mentioned high-efficiency water-cooled argon arc welding torch, the center of the tungsten pole clamp 12 is a tubular cavity, and the outer circle of the top is processed with an external thread 3 to connect with the nut 2 at the lower end of the rear cap. The tapered jaw 16 at the lower end of the pole clip 12 and the tapered hole at the lower end of the torch head 6 form a clamping mechanism for the tungsten rod 14 .

In the above-mentioned high-efficiency water-cooled argon arc welding gun, the inner circle of the lower end of the gun head body 6 is processed with a tapered hole matching the lower end cone of the tungsten pole clamp 12, and the outer circle of the upper end of the gun head body 6 is provided with a tungsten pole clamp for positioning The bolt 5 and the positioning bolt 5 pass through the gun head body 6 and are connected with the upper annular air groove 26 of the tungsten pole clamp 12 .

In the above-mentioned high-efficiency water-cooled argon arc welding gun, the inner circle of the upper end of the outer connecting sleeve 9 is connected with the lower end of the jacket of the gun head body 6 through threads, and the inner circle of the outer connecting sleeve 9 is also provided with an inner convex ring. An outer convex ring is also arranged in the middle of the outer circle, and the inner convex ring is connected with the lower part of the outer convex ring to fix the gun head body 6 and the inner heat-insulating sleeve 10 in the middle of the bottom of the gun head body jacket 4 .

In the above-mentioned high-efficiency water-cooled argon arc welding torch, the lower end of the outer circle of the outer connecting sleeve 9 is provided with an annular groove, and the upper opening of the connecting ring 11 is provided with an inward flanging, and the inward flanging is slidably connected with the annular groove.

In the above-mentioned high-efficiency water-cooled argon arc welding torch, the inner circle of the upper part of the ceramic nozzle 13 is a tapered mouth, and its taper coincides with the taper of the outer circle of the outer heat insulating sleeve 10, and the inner circle of the upper end of the outer heat insulating sleeve 10 is threaded and The inner heat insulation sleeve 7 is connected, and the outer heat insulation space 17 is formed between the outer circle of the inner heat insulation sleeve 7 and the inner circle of the outer inner heat insulation sleeve 10. The lower end of the ceramic nozzle 13 is provided with a tubular nozzle, and the inner hole of the tubular nozzle is connected with the tungsten rod. 14 form an annular shielding gas cooling channel 15.

Example ,

The method of use is as follows:

1) First fix the tungsten pole clamp in the center hole of the gun head body with the positioning bolt, and then put the inner heat insulation sleeve on the outer edge of the ring groove on the outer circle of the gun head

2) Put the welding torch head assembly into the torch head body sheath from bottom to top, and the upper end of the tungsten pole clip is exposed from the top of the torch head body, and is fixed with the nut at the bottom of the back cap and the external thread on the top of the tungsten pole clip ;

3) Screw the outer connecting sleeve to the lower end of the gun head body sheath, and the inner convex ring on the inner circle of the outer connecting sleeve presses and fixes the outer convex ring on the outer circle of the inner heat insulation sleeve in the gun head body;

4) Fix the outer heat insulation sleeve on the outer circle of the inner heat insulation sleeve through threads to form the welding torch head assembly;

5) Screw the upper mouth of the ceramic nozzle and the lower mouth of the connecting ring together;

6) Rotate and loosen the rear cap, insert the tungsten rod from the bottom of the ceramic nozzle into the tungsten electrode clip, adjust the length of the exposed bottom of the ceramic nozzle, and finally tighten the rear cap, the tungsten electrode is clamped under the pulling action of the rear cap, and the tungsten electrode Clamp the tungsten rod with the jaws at the lower end;

7) Put the air inlet pipe, water inlet pipe and water outlet pipe into the middle lumen of the handle, and the ends of the air inlet pipe, water inlet pipe and water outlet pipe are threaded with the air inlet, water inlet and water outlet on the top side of the gun head body. The outer end of the inlet pipe is connected with a pipe interface to connect the protective gas source and the working power supply; the water inlet pipe is connected to the water circulation pump, and the water circulation pump is set in the circulating water tank, and the water outlet pipe is connected to the circulating water tank.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements all fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Except for the technical characteristics disclosed in the specification sheet of the present invention, they are the official skills of the professional technicians.

Claims (9)

1. A high-efficiency water-cooled argon arc welding torch is characterized in that it includes a handle, a torch head body, a torch head body sheath, a rear cap, a tungsten pole rod, a tungsten pole clamp, an inner heat insulation sleeve, an outer heat insulation sleeve, and an outer connection sleeve, nozzle connecting ring and ceramic nozzle, wherein, the middle of the handle is provided with air inlet pipe, water inlet pipe and outlet pipe, the right end of the handle is connected with the machine head body coat covering the outside of the gun head body, the lower end of the air inlet pipe is connected with the gun head The air intake hole on the side of the upper end of the body is connected, the air intake hole is connected with the vertical through hole in the center of the gun head body, a tungsten pole clip is set in the middle of the vertical through hole, a tungsten rod is worn in the middle hole of the tungsten pole clip, and the middle of the outer circle of the gun head body An annular groove is processed, and the inner circle of the inner heat insulation sleeve is tightly fitted on the outside of the annular groove to seal the annular groove into a water cooling jacket. The water inlet pipe and the outlet pipe are connected with the water cooling jacket. The outer heat insulation sleeve, the heat insulation space is formed between the inner heat insulation sleeve and the outer heat insulation sleeve. The lower end of the connecting sleeve is connected with the nozzle connecting ring, the connecting ring and the outer circle of the upper end of the ceramic nozzle are threaded together, and the rear cap is arranged on the top of the gun head body. 2. A high-efficiency water-cooled argon arc welding torch according to claim 1, characterized in that the middle part of the outer circle of the tungsten clamp is vertically processed with cooling fins, both ends are processed with annular air grooves and vertical air guide grooves, and the upper end of the annular The air groove communicates with the intake pipe through the vertical air guide groove. The lower end of the tungsten electrode clamp is processed with a tapered jaw, and the tapered jaw is symmetrically and vertically processed with a jaw slit. The annular air groove at the lower end is connected to the tungsten electrode through the vertical air guide groove. The lumen of the sandwich center communicates with the ceramic nozzle. 3. A high-efficiency water-cooled argon arc welding torch according to claim 2, characterized in that two ring grooves are arranged above and below the outer circle of the tapered jaw at the lower end of the tungsten clamp, and an air screen is connected to the ring grooves. 4. A high-efficiency water-cooled argon arc welding torch according to claim 2, characterized in that the air screen is composed of a shell and a screen, the upper and lower ends of the shell are open, the inner circle of the upper opening is provided with a convex ring, and the lower opening is An annular screen is inlaid, and the central hole of the convex ring and the screen is respectively clamped together with two ring grooves arranged up and down under the outer circle of the tapered jaw at the lower end of the tungsten clamp. 5. A high-efficiency water-cooled argon arc welding torch according to claim 2, characterized in that the center of the tungsten pole clamp is a tubular cavity, and the outer circle of the top end of the tungsten pole clamp is processed with external threads to connect with the nut at the lower end of the rear cap. The cap is linked with the tungsten pole clamp, and the tapered jaw at the lower end of the tungsten pole clamp and the tapered hole at the lower end of the torch head form a tungsten rod clamping mechanism. 6. A high-efficiency water-cooled argon arc welding gun according to claim 1, characterized in that the inner circle of the lower end of the gun head body is processed with a tapered hole matching the lower end cone of the tungsten clamp, and the outer circle of the upper end of the gun head body A tungsten pole clamp positioning bolt is provided, and the positioning bolt passes through the gun head body and is connected with the upper annular air groove of the tungsten pole clamp. 7. A high-efficiency water-cooled argon arc welding torch according to claim 1, characterized in that the inner circle of the upper end of the outer connecting sleeve is connected with the lower end of the outer sleeve of the gun head body through threads, and the inner circle of the outer connecting sleeve is also provided with an inner convex ring, An outer convex ring is arranged in the middle of the outer circle of the inner heat insulation sleeve, and the inner convex ring is connected with the lower part of the outer convex ring to fix the gun head body and the inner heat insulation sleeve in the middle of the bottom of the gun head body jacket. 8. A high-efficiency water-cooled argon arc welding torch according to claim 5, characterized in that the lower end of the outer circle of the outer connecting sleeve is provided with an annular groove, and the upper opening of the connecting ring is provided with an inward flanging, and the inward flanging and the annular Groove sliding connection. 9. A high-efficiency water-cooled argon arc welding torch according to claim 1, characterized in that the upper inner circle of the ceramic nozzle is a tapered mouth, and its taper coincides with the outer circle of the outer heat insulation sleeve. The inner circle of the upper end is connected with the inner heat insulation sleeve through threads, and the outer heat insulation space is formed between the outer circle of the inner heat insulation sleeve and the inner circle of the outer inner heat insulation sleeve. An annular protective gas cooling channel is formed between the rods.