KR101685133B1

KR101685133B1 - Torch for Welding machine

Info

Publication number: KR101685133B1
Application number: KR1020150085234A
Authority: KR
Inventors: 연규수
Original assignee: 연규수
Priority date: 2015-06-16
Filing date: 2015-06-16
Publication date: 2016-12-12

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welding torch used for welding Co 2, MAG, and MIG, and more particularly, to a welding torch to which a welding tip is applied in which a gas jet is formed in a welding tip to change a gas circuit, .

Description

{Torch for Welding machine}

Generally, arc welding using a gas supplies gas such as carbon dioxide, argon, and helium while supplying power to the wire and the welding product (base material), and at the same time, feeding the wire (solid-type copper cord) The welding is performed by using an arc generated between the electrodes.

A welding torch as shown in Registration Utility Model Publication No. 0-0355396 is composed of a nozzle, an insulator, a welding tip, a gas diffuser, and a body.

The gas used for welding is supplied from the gas cylinder through the interior of the toroidal body, and is injected into the welded portion inside the nozzle when the gas is injected through the gas outlet in the gas diffuser.

Such a conventional welding torch was welded by supplying gas (Co2, argon, helium) from a gas diffuser to cut off the oxygen around the weld.

At this time, since gas outlets of the gas diffuser are formed in a straight line to each other, a dead zone in which no gas is supplied to the welded portion is generated. Therefore, a carbon hole was formed on the weld bead surface, fusion between the wire and the base material was not performed well, and consumption of the ejected gas (Co2, helium, and argon) was large, which was unproductive.

At this time, the blown gas did not completely block the oxygen inflow, and the welding surface was neither smooth nor elaborate.

Further, since the ejected gas was ejected from the welded portion, the fusion between the wire and the base material did not occur quickly or strongly when the bead was formed in the welded base.

Further, since the length of the gas diffuser is constant and the gas ejection ports are constantly penetrated to each other, the amount of gas ejected can not be controlled.

Also, since the gas was discharged through the gas diffuser, the spatter and foreign matter generated during welding flowed into the interior of the welding tip.

A high temperature was generated in the welding tip, the abrasion resistance of the welding tip deteriorated, and the spatter was welded to the welding tip. As a result, the tip of the welding tip was broken, and the welding tip was not used for a long time.

The spatter and the wire are welded firmly to the welding tip, which generates high heat during welding. As a result, the wire feed was not smooth, and the spatter welded to the welding tip was not easily removed, thereby lowering the working efficiency.

Because the welding tip was not cooled, the material of the welding tip lost its original properties. At this time, the welding tip was worn by the wire wire, and the durability of the welding tip was deteriorated.

Because the high temperature of the welding tip is transmitted to the gas diffuser and the torch, the gas diffuser and the torch's main material have to be expensive copper or brass. As a result, the fatigue of workers using a heavy, heavy welding torch is easily increased, thereby lowering production efficiency.

The gas nozzle serves to guide the gas ejected from the gas ejection port to the welded portion. Since the gas ejection port is formed in the gas diffuser, the length of the gas nozzle has to be made long. In addition, if the length of the gas diffuser is long, the length of the gas nozzle must be long, which is unreasonable.

In such a conventional welding torch, since the gas nozzle and the gas diffuser are formed long, welding in a narrow and deep space is not easy.

Registration Utility Model Bulletin 20-0355396

Disclosure of Invention Technical Problem [8] The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a torch for a welding machine in which gas discharged through a hole formed in a tip cools heat generated in a tip or prevents heat generation of a tip, thereby increasing abrasion resistance and durability of the tip The purpose is to do.

According to an aspect of the present invention, there is provided a welding torch comprising: a tip having a first through hole in a longitudinal direction; a tube connected to the tip and having a second through hole formed in the longitudinal direction; An insulator connected to the tube, and a nozzle connected to the insulator and spaced apart from the tip so as to surround a part or the entirety of the tip, wherein the nozzle has a third through hole in the longitudinal direction, 1 through-hole communicates with the second through-hole, the second through-hole communicates with the third through-hole, one side of the first through-hole communicates with an outer space of the tip, and a hole is formed in the tip And the first through-hole and the space outside the tip communicate with each other.

In the welding torch of claim 2 of the present invention, the plurality of holes are formed radially with respect to the central axis of the first through hole.

In the torch for a welder according to claim 3 of the present invention, the hole includes a first hole and a second hole closer to one side of the tip than the first hole, wherein the center of the first hole The axis and the central axis of the second hole are not parallel to each other, and a plurality of the first hole and the second hole are radially formed with respect to the central axis of the first through hole.

The welding torch of the present invention has the following effects.

At the tip, gas (co2, argon, helium) is supplied, at which time the supplied gas cools the heat generated in the tip, so that heat generation of the tip is blocked by the gas.

A hole is formed in the tip to increase the gas pressure inside the tip, and the gas to be ejected is adjusted to the size of the hole. This prevents spatter and foreign matter generated during welding from flowing into the inside of the tip.

One end and one end of the tip are cooled by the gas and become a little heat, so that the spatter is not fused to the tip, and the wire is not attached to the tip, so that the wire delivery is smooth. At this time, although the number of spatters welded to the tip is very small, even if the spatters are welded to the tips, it is possible to easily remove the spatters, thereby improving the working efficiency.

The heat generated in the tip becomes a feeble heat due to the gas, so that no high temperature is generated in the tube. Therefore, if the material of the pipe is aluminum (AL), the cost can be reduced. In addition, since the weight of aluminum is ½ of copper or brass, the torch for welding machine is lightened, fatigue of worker is reduced, and production efficiency is improved.

The welding torch of the present invention cools the generation of heat of the tip by the gas, so that the abrasion resistance of the tip is also improved.

In addition, since copper as a material of the tip does not lose its original properties, the wear of the tip due to the wire wire is reduced, thereby significantly improving the durability of the tip.

When the bead is formed on the welding base material, the gas is ejected at a close distance from the welding part, so that the wire and the base material are fast and strongly fused, and the gas is completely blocked from flowing oxygen into the welding part, so that a smooth and precise welding surface is formed. In addition, it can save a large amount of gas (Co2, Helium, Argon).

Since the welding torch of the present invention has a hole formed in the tip, the same effect as the conventional one can be obtained even if the length in the longitudinal direction of the nozzle is reduced to half the length of the nozzle. Thus, reducing the length of the nozzle reduces the weight of the torch for the welder and reduces the cost.

Since the length of the nozzle in the longitudinal direction is shorter than that in the conventional art, if the length of the tube is made suitable for the working conditions, welding in a narrow and deep space is facilitated as in the welding torch of the present invention shown in Fig.

1 is a sectional view of a torch for a welding machine according to a first embodiment of the present invention;
2 is a sectional view of the tip of Fig. 1;
Figure 3 is another sectional view of the tip of Figure 1;
Figure 4 is a front view of the tip of Figure 1;
5 is a cross-sectional view of the tube of FIG. 1;
6 is a cross-sectional view of the insulator of FIG.
7 is a cross-sectional view of the nozzle in Fig. 1;
8 is a cross-sectional view of a torch for a welder in accordance with a first embodiment of the present invention which facilitates narrow and deep welding.
9 is a sectional view of a tip of a torch for a welding machine according to a second embodiment of the present invention.
10 is a front view of a tip of a torch for a welder according to a third embodiment of the present invention;

The same components as those of the prior art will be described with reference to the above-described prior art, and detailed description thereof will be omitted.

1 is a sectional view of a welding torch 100 according to a first embodiment of the present invention, Fig. 2 is a sectional view of a tip 200 in Fig. 1, and Fig. 3 is a cross- 1 is a cross-sectional view of a tube 300 in FIG. 1, FIG. 6 is a cross-sectional view of an insulator 400 in FIG. 1, and FIG. 7 is a cross- 8 is a cross-sectional view of a torch 100 'for a welder according to a first embodiment of the present invention, which facilitates narrow and deep welding, and Fig. 9 is a sectional view of a nozzle 500 according to a second embodiment of the present invention 10 is a front view of a tip 200 '' of a torch 100 for a welder according to a third embodiment of the present invention.

The welding torch 100 according to the first preferred embodiment of the present invention includes a tip 200 having a first through hole 280 formed in the longitudinal direction L and a tip 200 connected to the tip 200, A body 600 having a third through hole 620 formed in the longitudinal direction L and connected to the tube 300, a tube 600 connected to the tube 300, And a nozzle 500 connected to the insulator 400 and spaced apart from the tip 200 so as to surround a part or all of the tip 200. The insulator 400 is connected to the insulator 400,

The first through hole 280 communicates with the second through hole 360 and the second through hole 360 communicates with the third through hole 620. The one end A ) Communicates with the outer space of the tip (200).

The tip 200 includes a main body 205, a tube coupling portion 270 connected to the tube 300, and a coupling portion 260 connecting the main body 205 and the tube coupling portion 270.

The main body 205 includes a first main body 210, a second main body 230 which contacts the other end side B of the first main body 210 and a third main body 230 which contacts the other end side B of the second main body 230, And includes a main body 250.

The diameter of the second body 230 is larger than the diameter of the first body 211.

The diameter of the third body 250 is larger than the diameter of the second body 230.

1 to 3, the diameter of the first main body 210 increases from one side 211 to the second main body 230 side. At this time, the first body 210 extends in a curved or straight line from the first side 211 to the second side 230.

The second body 230 has a constant diameter.

A portion of the second body 230 and the third body 250 is continuous with the taper 251.

A thread, which is a fastening bolt, is formed on the outer circumferential surface of the tube fitting portion 270. The thread is formed with a tab of 7 mm.

The first through hole 280, which is a gas delivery tube, is formed at the center of the tip 200.

The first through-hole 280 makes wire delivery smooth.

The first through hole 280 includes a first passage 281 serving as a passage for supplying a wire to the outer space of the welding torch 100, a third passage 283 serving as a passage through which the wire and the gas are passed, And a second passage 282 connecting the one passage 281 and the third passage 283.

The first passage 281 is a space surrounded by an inner peripheral surface 281a having a straight section parallel to the longitudinal direction L. [

The second passage 282 is a space surrounded by an inner peripheral surface 282a having a curved or straight cross section.

The third passage 283 is a space surrounded by an inner peripheral surface 283a having a straight section parallel to the longitudinal direction L. [

The first passage 281 is formed at a position 10 to 15 mm from the one side 211 of the tip 200 toward the other end B side. That is, the first passage 281 is located in the first main body 210. At this time, the diameter of the first passage 281, which is a through hole, is 0.6 to 2.0 mm, and the size is made according to the size of the wire.

1 to 3, the inner circumferential surface 283a of the third passage 283 extends in the longitudinal direction L from the other side 271 of the tube fitting part 270 to the one end side A, 281 and the other end side B of the inner peripheral surface 281a. The inner circumferential surface 282a of the second passage 282 connecting the inner circumferential surface 283a of the third passage 283 and the inner circumferential surface 281a of the first passage 281 is in contact with the inner circumferential surface 281a of the first passage 281, And has a shape in which the diameter gradually increases from the short side B to the one end A of the inner peripheral surface 283a of the third passage 283. That is, the diameter of the third passage 283 is larger than the diameter of the first passage 281.

At this time, the diameter of the third passage 283 is 3.5 mm, so that both the wire and the gas can be smoothly fed or supplied.

A hole 220 as a gas jet port is formed at a position 10 to 15 mm from one side 211 of the tip 200 toward the other side B.

The hole 220 is formed so that the first through hole 280 and the space outside the tip 200 are in communication with each other.

The hole 220 is formed perpendicular to the central axis C of the first through hole 280.

At this time, the diameter of the hole 220 is set to 0.6 to 2.0 mm according to the size of the wire used according to the voltage and current used.

The hole 220 includes a first hole 221 and a second hole 223 closer to one side 211 of the tip 200 than the first hole 221.

The first hole (221) and the second hole (223) are formed in a zigzag pattern so that the angle of gas ejection is made different so that there is no dead zone. 4, the center axis C1 of the first hole 221 and the center axis C2 of the second hole 223 are formed so as not to be parallel to each other.

The first hole 221 and the second hole 223 are formed radially with respect to the central axis C of the first through hole 280, respectively.

The tube 300 includes a main body 310, a body coupling portion 350, a connection portion 340 connecting the main body 310 and the body coupling portion 350, and a second through hole 360.

The main body 310 includes a first main body 315 and a second main body 320 on which the other side 320b contacts one end A of the first main body 315. [

The outer diameter of the first body 315 is smaller than the outer diameter of the second body 320.

The second main body 320 includes an insulator coupling portion 321, a taper 323, a tip coupling portion 325 and a tip coupling portion 327.

The taper 323 is formed so as to surround the outer peripheral surface of the main body 310.

The taper 323 is formed between the insulator coupling portion 321 and one side 320a of the second main body 320. [

The insulator coupling portion 321 and the tip coupling portion 325 are threads.

The second through hole 360 is a space surrounded by the inner peripheral surface 362 of the tube 300.

The tube 300 further includes a cover 330 that contacts the other end B of the main body 310.

The cover 330 serves to cover one end A of the body 600 so as not to be exposed to the outside.

1 and 5, the cover 330 is connected to one side 331 and one side 331 formed perpendicularly to the longitudinal direction L while touching the other end side B of the main body 310, An outer circumferential surface 333 parallel to the direction L and another side 335 connected to the outer circumferential surface 333 and perpendicular to the longitudinal direction L. [ And the other side 335 touches the one end A of the connecting portion 340.

A thread is formed on the outer peripheral surface of the body coupling portion 350.

The tubular insulator 400 includes a main body 430 and a nozzle coupling portion 410.

The nozzle coupling portion 410 is formed to be connected to one side 431 of the main body 430.

A thread is formed on the outer peripheral surface of the nozzle coupling portion 410.

The main body 430 includes a first engaging portion 433 and a tube fitting portion 437 formed to surround the inner peripheral surface of the main body 430.

The tube fitting portion 437 is a thread.

1 or 6, the cross section of the first latching portion 433 has a right-angled shape.

The one end side A of the tube fitting portion 437 comes into contact with the other end side B of the first engagement portion 433.

A portion of the main body 430 where the one side 431 of the main body 430 is connected to the outer peripheral surface of the main body 430 has a tapered shape.

The tubular nozzle 500 has an insulator coupling portion 510 which is threaded on a part of the inner circumferential surface of the other end B.

The portion where the other side 511 of the nozzle 500 and the outer peripheral surface of the nozzle 500 are connected has a tapered shape.

The tubular body 600, which is partially curved, includes a third through hole 620 and a tube coupling portion 610 which is a fastening bolt.

The third through hole 620 is a space surrounded by the inner peripheral surface 622 of the body 600.

The tube fitting portion 610 is formed at one end A of the inner circumferential surface 622 of the body 600. The tube fitting portion 610 is a thread. The thread is formed with a tab of 7 mm.

The outer surface, i.e., the outer peripheral surface of the body 600 is coated with rubber (R).

As described above, the length L of the tube 300 may be formed as shown in FIGS. 1 and 5. However, as shown in FIG. 8, the length L of the tube 300 may be longer Welding in a narrow and deep space is facilitated.

Hereinafter, a welding torch 100 according to a second preferred embodiment of the present invention will be described with reference to FIG.

The hole 220a of the second embodiment is formed differently from the hole 220 of the first embodiment.

The hole 220a is formed at a position 10 to 15 mm in the direction from the one side 211 of the tip 200 'to the other side B side.

The hole 220a includes a first hole 221a and a second hole 223a formed closer to one side 211 of the tip 200 'than the first hole 221a.

The central axis of the first hole 221a and the central axis of the second hole 223a are formed to be inclined with respect to the longitudinal direction L. [ That is, the gas supplied according to the circuit G of the gas is discharged into the external space of the tip 200 'without being broken by more than 90 degrees in the hole 220a.

The construction other than that described above is the same as that of the welding torch 100 of the first embodiment of the present invention.

Hereinafter, a welding torch 100 according to a third preferred embodiment of the present invention will be described with reference to FIG.

The holes 220b formed in the tip 200 "of the third embodiment are formed differently from the holes 220, 220a of the first embodiment or the second embodiment of the present invention.

The second hole 223b is preferably formed as if the first hole 221b were rotated counterclockwise or clockwise at a constant angle. That is, it is preferable that the first hole 221b and the second hole 223b are not parallel to each other but are staggered.

When the first hole 221b and the second hole 223b are formed in this manner, the gas can be supplied to the welded portion in a spiral or spiral shape.

Other than the above, the constitution is the same as that of the welding torch 100 of the second embodiment of the present invention.

The welding torch 100 of the present invention may be used without surrounding the tube 300 with rubber as in the first to third embodiments as described above, (300) may not be exposed to the outside.

Hereinafter, the structure and effects of the welding torch 100 according to the preferred embodiments of the present invention will be described.

The other side 271 of the tube coupling part 270 is brought into contact with the tip engaging part 327 and the tip end of the tube coupling part 270 is connected to the tip coupling part 325 of the tube 300, The other side 253 of the third body 250 contacts the one side 320a of the pipe 300.

The other side 335 of the cover 330 covers the one end A of the body 600 when the body coupling part 350 of the tube 300 and the tube coupling part 610 of the body 600 are coupled to each other, do. The outer diameter of the cover 330 is formed to be the same as the outer diameter of the body 600 including the rubber R when the rubber R is surrounded.

The first engaging portion 433 of the insulator 400 is coupled to the tapered portion 323 of the tube 300 by inserting the insulator coupling portion 321 of the tube 300 and the tube coupling portion 437 of the insulator 400, .

When the nozzle coupling part 410 of the insulator 400 and the insulator coupling part 510 of the nozzle 500 are coupled to each other, the other side 511 of the nozzle 500 contacts the one side 431 of the insulator 400.

The welder torch 100 combined with the structure described above is configured such that the gas and the wire supplied through the body 600 and the third through hole 620 pass through the second through hole 360 of the tube 300, (280) of the first electrode (200). The gas supplied to the first through hole 280 is discharged through the hole 220 of the tip 200 and moved to the space surrounded by the outer circumferential surface of the tip 200 and the inner circumferential surface of the nozzle 500. The gas is supplied near the welded portion and the welded portion spaced apart from the one side 211 of the tip 200 continuously while being fed like the circuit G. [

Therefore, the gas circuit G of the welding torch 100 of the present invention is formed differently from the conventional one. That is, gas (co2, argon, helium) is supplied from the tip 200, and the supplied gas cools the heat generated at the tip, so that heat generation of the tip 200 is blocked by the gas.

A hole 220 is formed in the tip 200 so that the gas pressure inside the tip 200 is increased and the gas ejected is adjusted to the size of the hole 220. Accordingly, the spatter and foreign matter generated during welding can be prevented from flowing into the interior of the tip 200.

One end 211 and one end A of the tip 200 are cooled by gas and become a little heat so that the spatter is not fused to the tip 200 and the wire does not stick to the tip 200, It becomes. At this time, although the number of spatters fused to the tip 200 is very small, even if the spatters are fused to the tip 200, it is possible to easily remove the spatters, thereby improving the working efficiency.

Since the heat generated in the tip 200 becomes a feeble heat due to the gas, high temperature is not generated in the tube 300. Therefore, although the material of the tube 300 can be copper or brass as in the prior art, the cost can be reduced by using aluminum (AL). Further, since the weight of aluminum is ½ of copper or brass weight, the torch 100 for a welding machine is made lighter than conventional ones, fatigue of a worker is reduced, and production efficiency is improved.

The welder torch 100 of the present invention cools the generation of heat of the tip 200 by the gas, so that the abrasion resistance of the tip 200 is also improved.

In addition, since the material of the tip 200 does not lose its original properties, the wear of the tip 200 due to the wire is reduced, and the durability is significantly improved as compared with the tip 200 used conventionally.

Since the welding torch 100 of the present invention has the hole 220 formed in the tip 200, the same effect as the conventional one can be obtained by reducing the length L of the nozzle 500 in the longitudinal direction L . Accordingly, if the length of the nozzle 500 is reduced, the weight of the torch 100 for a welding machine is reduced and the cost is reduced.

Since the length L of the nozzle 500 is shorter than that of the conventional art, if only the longitudinal length L of the tube 300 is manufactured to suit the working conditions, the welding torch 100 ' Welding of a narrow and deep space becomes easy.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be apparent to those skilled in the art.

** Explanation of symbols **
100: welding torch 200: tip (first embodiment)
200 ': tip (second embodiment) 200'': tip (third embodiment)
205: main body 210: first main body
211: one side 220: hole
220a: hole (second embodiment) 220b: hole (third embodiment)
221: first hole 221a: first hole (second embodiment)
221b: first hole (third embodiment) 223: second hole
223a: second hole (second embodiment) 223b: second hole (third embodiment)
230: second main body 250: third main body
251: taper 253: other side
260: connecting portion 270: tube fitting portion
271: the other side 280: first through hole
281: first passage 281a: inner peripheral surface
282: second passage 282a: inner peripheral surface
283: third passage 283a: inner peripheral surface
300: tube
310: main body 315: first main body
320: second body 320a: one side
320b: the other side 321: insulator coupling portion
323: Taper 325: Tip coupling portion
327: tip stopper 330: cover
331: one side 333:
335: the other side 340:
350: body coupling part 360: second through hole
362: inner peripheral surface 400: insulator
410: nozzle coupling portion 430:
431: one side 432: taper
433: first latching part 437:
500: nozzle 510: insulator coupling portion
511: other side 512: taper
600: Body 610: Tube coupling part
620: third through hole 622: inner peripheral surface
A: one side B: the other end
C: center axis of the first through hole C1: center axis of the first hole
C2: central axis of the second hole G: gas circuit
L: longitudinal direction R: rubber

Claims

A tip in which a first through hole is formed in the longitudinal direction;
A tube connected to the tip and having a second through-hole in the longitudinal direction;
A body connected to the tube and having a third through-hole in the longitudinal direction;
An insulator connected to the tube;
And a nozzle connected to the insulator and surrounding the tip while being spaced apart from the tip,
The first through-hole communicates with the second through-hole, and the second through-hole communicates with the third through-
Wherein one end of the first through hole communicates with an outer space of the tip,
Wherein the tip is provided with a hole so that the space outside the first through hole and the tip
In addition,
Wherein the first through hole includes a third passage through which gas and one of gas such as carbon dioxide, helium, and argon pass, and a first passage connected to the third passage and having a diameter smaller than the diameter of the third passage ,
The wire is fed into the external space of the torch through the first passage,
Wherein the gas is discharged to the hole and moved to a space surrounded by the tip and the nozzle, which are spaced apart from each other, and supplied to the vicinity of the welding part and the welding part to cut off the oxygen flowing into the welding part.

The method according to claim 1,
Wherein a plurality of holes are radially formed with respect to a central axis of the first through hole.

The method according to claim 1,
The hole includes a first hole and a second hole closer to one side of the tip than the first hole,
The central axis of the first hole and the central axis of the second hole are not parallel to each other,
Wherein a plurality of the first holes and the second holes are radially formed with respect to the central axis of the first through hole.