KR101109631B1 - Hand welding torch using carbon dioxide - Google Patents

Abstract

The present invention provides a manual carbon dioxide gas welding torch connected by a welding cable by a connection ring to be performed by the operator while holding the welding torch coupled to the welding cable directly. The manual carbon dioxide gas welding torch, which is connected to the welding cable by the connection ring according to the present invention, is made of a tubular copper material, and the first connection ring and the second connection ring having different sizes are coupled to the torch body of the welding torch. Inserted into the outer circumferential surface of the connecting nipple, which is an internal component of the grip, and is connected between the outer circumferential surface of the first connecting ring and the inner circumferential surface of the second connecting ring, while the ends of the welding cable are electrically connected to each other. Ensure power is supplied to the welding torch. As a result, the connecting portion of the welding cable and the welding torch can maintain a predetermined shape by the first connecting ring and the second connecting ring made of metal, and the grip that surrounds the connecting portion and the connecting portion of the welding cable and the welding torch. It can be interlocked with each other without gaps to prevent heat generation and damage to the welding cable due to the repeated deformation of the welding cable and the welding torch connecting portion generated by the worker repeatedly using the welding torch.

The manual carbon dioxide gas welding torch connected by the welding cable by the connecting ring according to the present invention includes a welding cable, a welding torch and a connecting body, and the welding cable moves along the longitudinal direction and is used as a flow path of carbon dioxide gas. It is made by covering the power line with the outer circumferential surface of the gas hose having the inner passage. The welding torch has a torch body with a nozzle formed at the tip, and the welding wire and the carbon dioxide are discharged to the outside through the nozzle to perform welding. The connecting body includes a first connecting ring made of tubular copper material which is inserted into the outer circumferential surface of the connecting nipple, which is an internal component of the grip coupled to the torch body of the welding torch, and the connecting nipple. It includes a second connecting ring made of a tubular copper material inserted into the outer peripheral surface and joined to the first connecting ring, The end power line is located on the outer circumferential surface of the first connecting ring and the inner circumferential surface of the second connecting ring, and electrically connects the first connecting ring and the second connecting ring to supply power to the welding torch, and connects the welding cable and the welding torch. The part maintains the shape defined by the first connection ring and the second connection ring to prevent the deformation of the connection portion of the welding cable and the welding torch by repeated use of the welding torch during the welding operation.

Welding, welding cable, welding torch, carbon dioxide, silver lead

Description

Hand welding torch using carbon dioxide by welding cable connected by connecting ring

The present invention relates to a manual carbon dioxide gas welding torch, in which a welding cable is connected by a connecting ring. More specifically, a portion where the welding cable and the welding torch are connected to each other is electrically connected by a connecting ring made of tubular copper material. It maintains the defined shape and makes sure that the joints of the welding cable and the welding torch and the grips where the connecting parts are firmly snapped to each other so that the heat generation of the welding cable and the welding torch connection part which is repeatedly bent and unfolded during the welding work process. The present invention relates to a manual carbon dioxide welding torch, in which a welding cable is connected by a connection ring to prevent excessive damage.

Carbon dioxide gas welding machine is a welding machine that uses inexpensive carbon dioxide (CO₂ gas) instead of inert gas such as argon (Ar) and helium (He) as a shield gas. It is widely used.

Such a carbon dioxide gas welding machine generally includes a welding wire or a welding machine main body to which carbon dioxide is supplied, a welding wire feeder to which welding wires are fed, a welding torch on which a welding operation is performed, and a welding cable connecting the welding machine body and the welding torch. Consists of the configuration.

Here, the welding cable is a welding wire is moved in the longitudinal direction and is coated with the power line positioned on the outer peripheral surface of the gas hose having an inner passage used as the flow path of carbon dioxide gas, the welding torch is a nozzle at the tip The formed torch body has a welding wire and carbon dioxide gas is discharged to the outside through a nozzle to perform the welding. The welding cable and the welding torch are connected to each other, and the welding wire and the carbon gas are transferred to the inside of the welding torch, while the power wire of the welding cable is electrically connected to the welding torch, and the power is transmitted, thereby welding the welding wire through the nozzle of the welding torch. The welding to the weldment is made as the outside is exposed to the outside.

In the carbon dioxide gas welding machine having such a configuration, the connection part of the welding torch and the welding cable is exposed to the risk of damage as the bending and unfolding operation is repeated at the time of using the welding torch repeatedly. In particular, as the welding torch and the welding cable are connected to each other in the grip of the welding torch that is held by the worker, it is difficult to prevent the movement of the welding cable due to the gap between the welding cable and the inner space of the grip.

Accordingly, various technologies have been devised for the connection structure or connection method of the welding torch and the welding cable.

As a technology related to the connection structure or connection method of the welding torch and the welding cable, Korean Patent Publication No. 10-0529551, "Torch head copper welding method of carbon dioxide gas welding machine", Registration Utility Model Publication No. 20- 0322485 discloses a torch head copper wire connecting structure of a carbon dioxide gas welder, and Japanese Patent Laid-Open Publication No. 10-2009-0022147.

The "torch head copper wire welding method of carbonic acid gas welder" is fixed to the torch head to be fixed to the tip of the hose hose tube to supply the rubber hose for supplying gas through the copper wire to the outer surface of the brass torch head The electric current can be transferred to the torch head, and the outer side of the copper wire is covered with a rubber sheathed pipe.The band fixed by pressing the copper wire to the outer surface of the torch head is inserted into a holder installed on the upper part of the water tank, and fixed to the hose connecting pipe. The rubber hose is immersed in the coolant of the water tank, and the band and lead are heated with a torch lamp to inflate the band, and at the same time, the molten lead is allowed to penetrate between the torch head and the band and into the space of the copper wire so that the solder can be welded without damaging the rubber hose. It is made up of one configuration. In addition, the "torch head copper wire connection structure of the carbonic acid gas welder" is fixed to the torch head of the tip fixed to the front and the gas hose connecting pipe to the projection pipe to connect the hose for supplying gas to the gas hose connecting pipe At the end of the projecting pipe of the torch head, the copper wire is crimped and fixed to the copper band so that the current can be delivered to the torch head, and the outside of the copper wire is covered with a rubber sheathed pipe to install a switch and a lever for operating the switch. Consists of a copper wire fixed to the end of the torch head and a copper band by lead welding.

In addition, the "torch head copper wire welding method of carbonic acid gas welder" has a cylindrical shape, the first insertion step of the copper tube having a circular hole in the upper portion and the hose connecting pipe is inserted in close contact with the inner peripheral surface of the end of the copper tube; A first welding step in which one end of the torch head and the copper pipe are silver welded; A first crimping step of inserting the copper wire into the other end of the copper tube and then pressing and fixing the copper tube and the copper wire; A second welding step of silver welding the copper tube and the copper wire fixed by pressing; The gas nipple is inserted into the inside of the copper pipe so that one end of the hose connecting pipe and the gas nipple are in contact with each other. A rubber hose for supplying gas is inserted into the other end of the gas nipple, and the gas nipple is fixed by a mood bolt. A second insertion step; A first coating step of covering the copper pipe, the rubber hose, and the outside of the copper wire with a rubber coating pipe; A second pressing step of pressing one end of the rubber coating pipe with a copper ring; And a second coating step of wrapping the outside of the copper tube and the copper ring with a shrink tube, and then applying heat to shrink and coat the shrink tube.

However, the conventional structure of the welding torch and the connection method of the welding cable as described above, there is a problem in that the time and cost is increased when applied to the welding machine because the structure or method is cumbersome, and the effect is also very much Since it is not high, it is still required to develop a technology for improving the connection structure or the connection method of the welding torch and the welding cable.

Therefore, the present invention improves the problems of the prior art, the first connecting ring and the second connecting ring made of tubular copper material having a different size to the outer peripheral surface of the coupling nipple is coupled to the torch body of the welding torch Inserted and coupled, between the outer circumferential surface of the first connecting ring and the inner circumferential surface of the second connecting ring is located at the end of the welding cable is electrically connected to each other, so that power is supplied from the welding cable to the welding torch to weld The connecting portion of the torch can maintain the shape defined by the first connecting ring and the second connecting ring made of metal, and the grips surrounding the connecting portion and the connecting portion of the welding cable and the welding torch can interlock without gaps. Repeated deformation of the welding cable and the welding torch connection part caused by the operator repeatedly using the welding torch during the welding operation According to an object of the present invention to provide a carbon dioxide manual welding tochieul the welding cable is connected by a new type of connecting ring is prevented from being damaged and the heat welding cable.

According to a feature of the present invention for achieving the above object, in the present invention, the welding wire is moved along the longitudinal direction and the power line is located on the outer circumferential surface of the gas hose having an inner passage used as the flow path of the carbon dioxide gas A welding cable which is covered with; A welding torch having a torch body having a nozzle formed at a distal end thereof so that welding is performed while the welding wire and carbon dioxide are discharged to the outside through the nozzle; A first connection ring of tubular copper material inserted into an outer circumferential surface of a connection nipple which is an internal component of a grip coupled to the torch body of the welding torch, and fitted into an outer circumference of the first connection ring; Including a connecting member including a second connecting ring made of a tubular copper material coupled to the first connecting ring, the power line of the end of the welding cable of the outer peripheral surface of the first connecting ring and the second connecting ring Located on an inner circumferential surface and electrically connected to the first connecting ring and the second connecting ring to supply power to the welding torch, and the connecting portion of the welding cable and the welding torch is connected by the first connecting ring and the second connecting ring. Maintaining a predetermined shape is characterized in that by the repeated use of the welding torch during the welding operation it is prevented from repeatedly deforming the connection portion of the welding cable and the welding torch.

In the manual carbon dioxide gas welding torch connected to the welding cable by the connection ring according to the present invention, the first connection ring is inserted into the outer circumferential surface of the connection nipple so that the outer boundary of the first connection ring and the connection nipple is It is characterized by being combined with each other while being concealed.

In the manual carbon dioxide gas welding torch connected to the welding cable by the connecting ring according to the present invention, the second connecting ring is pressed onto the outer circumferential surface of the first connecting ring in which the power line of the welding cable is located. It is characterized in that combined with.

In the manual carbon dioxide gas welding torch connected to the welding cable by the connection ring according to the present invention, the first connection ring and the second connection ring are heat-treated, characterized in that a tubular copper material having a hardness of 25 to 35 is used. It is done.

According to the manual carbon dioxide gas welding torch, in which the welding cable is connected by the connection ring according to the present invention, the portion where the welding cable and the welding torch are connected to each other is electrically connected by a connection ring made of tubular copper material to maintain a predetermined shape. It is possible to prevent heat generation and damage of the welding cable and the welding torch connection part which are repeatedly bent and unfolded in the welding process. Accordingly, the risk of accidents caused by heat generation or damage of the welding cable and the welding torch connection part is prevented, thereby improving the work stability during welding work, and the efficiency of welding work also increases as the worker can concentrate on the welding work. At the same time.

Manual carbonic acid gas welding torch 100 is connected to the welding cable by the connection ring according to the present invention is to allow the welding operation is performed while the worker grips the welding torch 20 coupled to the welding cable 10 directly.

Passive carbon dioxide gas welding torch 100 is connected to the welding cable by the connection ring according to the present invention is made of a tubular copper material, the first connection ring 31 and the second connection ring having different sizes ( 32 is inserted into and coupled to the outer circumferential surface of the connecting nipple 24 coupled to the torch body 22 of the welding torch 20, between the outer circumferential surface of the first connecting ring 31 and the inner circumferential surface of the second connecting ring 32. The power line 13 of the end of the welding cable 10 is located in the electrically connected to each other is characterized in that the power is supplied from the welding cable 10 to the welding torch 20. Accordingly, the connecting portion of the welding cable 10 and the welding torch 20 can maintain a predetermined shape by the first connecting ring 31 and the second connecting ring 32 made of metal, and the welding cable 10 And the connecting portion of the welding torch 20 and the grip 27 surrounding the connecting portion can be engaged with each other without a gap so that the welding cable 10 generated by the operator repeatedly using the welding torch 20 during a welding operation. Heat generation and damage to the welding cable 10 due to repeated deformation of the connecting portion and the welding torch 20 is prevented.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 1 to 5. Meanwhile, in the drawings and the detailed description, illustrations and references to structures and operations which are easily understood by those skilled in the art from a general carbon dioxide gas welding machine, a welding cable, a welding torch, and a method of connecting the welding cable and the welding torch are briefly or omitted. . In particular, in the drawings and detailed description of the drawings, detailed descriptions and illustrations of specific technical configurations and operations of elements not directly related to technical features of the present invention are omitted, and only the technical configurations related to the present invention are briefly shown or described. It was.

1 is an overall configuration diagram of a welder to which a manual carbon dioxide gas welding torch is connected by a welding cable connected by a connecting ring according to the present invention, and FIG. 3 is an exploded perspective view of a welding cable constituting a gas welding torch and a main part of the welding torch, and FIGS. 3A to 3C illustrate a welding carbon dioxide welding torch connected by a welding cable by a connection ring according to a preferred embodiment of the present invention. Figure 4 is a view showing a configuration in which the cable and the welding torch are coupled to each other by a connecting body consisting of a first connection ring and a second connection ring, Figure 4 is a connection body consisting of a first connection ring and a second connection ring 5 is a cross-sectional view of the combined welding cable and the welding torch, Figure 5 (a) to (c) is the number of welding cable is connected by the connection ring in accordance with a preferred embodiment of the present invention The drawing shows the assembly of the welding cable and the welding torch forming the CO2 welding torch.

Manual carbon dioxide gas welding torch 100 is connected to the welding cable by the connection ring according to a preferred embodiment of the present invention includes a welding cable 10, a welding torch 20, the connector 30 as shown in FIG. Consists of the configuration.

The welding cable 10 is a power line 13 and a control line on the outer circumferential surface of the gas hose 12 having the inner passage 122 used to move the welding wire 11 along the length direction and used as a flow path of carbon dioxide gas. The coating 14 is disposed in a state where the welding wire 11 is positioned to transmit the welding wire 11, the carbon dioxide gas, the power supply, and the control signal to the welding torch 20.

to be. Here, the welding wire 11 is moved inside the spring liner 15 installed in the longitudinal direction on the inner passage 122 of the gas hose 12.

The welding cable 10 is connected to the welder main body 40 and the welding wire feeder 50 as shown in FIG. 1 to receive carbon dioxide gas and the welding wire.

The welding torch 20 is connected to the welding cable 10 and has a torch body 22 having a nozzle 21 formed at a tip thereof, and a welding wire 11 transmitted from the welding cable 10 through the nozzle 21. And the carbon dioxide gas is discharged to the outside is made welding.

Here, the welding torch 20 according to the preferred embodiment of the present invention, the nozzle 21, the gas diffuser 23, the torch body 22, the connecting nipple 24 is used (current), the guide nipple 25 And components including the supporter 26 are assembled to each other, such a configuration of the welding torch 20 follows a configuration of a general welding torch, so a detailed description thereof will be omitted.

The connecting body 30 is for connecting the welding cable 10 and the welding torch 20 to each other, and the welding cable 10 on the outer circumferential surface of the connecting nipple 24, which is an internal component of the grip 27, which is gripped by the operator. ) And the welding torch 20 to be connected to.

Such a connector 30 has a configuration including a first connection ring 31 and a second connection ring 32, as shown in Figs. 3 and 4, the first connection ring 31 and the second connection The ring 32 is made of tubular copper material so that it can be energized, and the second connection ring 32 is larger than the first connection ring 31 so that the ring 32 is formed in the second connection ring 32. 1 allows the connecting ring 31 to be positioned.

The first connection ring 31 is fitted into the outer circumferential surface of the connection nipple 24 coupled to the torch body 22 of the welding torch 20 to be coupled to the connection nipple 24, according to a preferred embodiment of the present invention. The first connection ring 31 is inserted into the outer circumferential surface of the connection nipple 24 by a predetermined length and is coupled to each other while the outer boundary of the first connection ring 31 and the connection nipple 24 is silvered.

 The second connection ring 32 is fitted into the outer circumferential surface of the first connection ring 31 to be coupled with the first connection ring 31, and the second connection ring 31 is fitted into the outer circumferential surface of the first connection ring 31. A space is formed between the connection ring 32 so that the end power line 13 of the welding cable 10 can be accommodated.

That is, the end power line 13 of the welding cable 10 is positioned on the outer circumferential surface of the first connection ring 31 and the inner circumferential surface of the second connection ring 32 and the first connection ring 31 and the second connection ring. Electrically connected to the (32) to supply power to the welding torch 20.

Here, the second connection ring 32 is coupled to the first connection ring 31 while being pressed to the outer circumferential surface of the first connection ring 31 where the power line 13 of the welding cable 10 is located.

On the other hand, the first connection ring 31 and the second connection ring 32 in accordance with a preferred embodiment of the present invention is heat-treated using a tubular copper material having a hardness of 25 ~ 35.

Manual carbon dioxide gas welding torch 100 is connected to the welding cable by the connection ring of the present invention as described above, the welding cable 10 and the welding torch 20, the first connection ring 31 and the second connection ring 32 As the connection between the welding cable 10 and the welding torch 20 is maintained by the metallicity of the first connection ring 31 and the second connection ring 32 made of a copper material as it is connected to each other by In addition, the first connection ring 31, the first connection ring 31 is inserted into the outer peripheral surface of the connection nipple 24, which is located inside the grip 27 of the welding torch 20 Since the second connection ring 32, which is crimped to the outer circumferential surface of the first connection ring 31 and surrounds the power supply line 13 and the power supply line 13 of the welding cable 10 located on the outer circumferential surface thereof, has a thickness. Accordingly, the grip portion 27 surrounding the connecting portion and the connecting portion of the welding cable 10 and the welding torch 20 can be engaged without a gap.

Accordingly, in the process of repeatedly using the welding torch 20 while the worker moves frequently during the welding operation, the connection portion of the welding cable 10 and the welding torch 20 is repeatedly bent and unfolded, and heat is generated or connected. Damage to the site is prevented.

As described above, the passive carbon dioxide welding torch connected to the welding cable by the connecting ring according to the embodiment of the present invention has been shown in accordance with the above description and drawings, but this is merely described as an example and does not depart from the technical spirit of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the scope of the present invention.

1 is an overall configuration diagram of a welder to which a manual carbon dioxide welding torch is applied by a welding cable connected by a connecting ring according to the present invention;

2 is an exploded perspective view of a main portion of a welding cable and a welding torch forming a passive carbon dioxide welding torch connected by a welding cable according to a preferred embodiment of the present invention;

3 (a) to 3 (c) illustrate a welding cable and a welding torch forming a manual carbon dioxide gas welding torch connected by a welding cable according to a preferred embodiment of the present invention, the first connecting ring and the second connecting ring; A view for showing a configuration coupled to each other by a connection made;

4 is a cross-sectional view of a welding cable and a welding torch coupled to each other by a connecting body consisting of a first connecting ring and a second connecting ring;

5 (a) to (c) is a view for showing the assembly of the welding cable and the welding torch forming a passive carbon dioxide welding torch connected to the welding cable by a connecting ring according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

10: welding cable 11: welding wire

12: gas hose 122: internal passage

13 power line 14 control line

15: spring liner 20: welding torch

21: nozzle 22: torch body

23 gas diffuser 24 connection nipple

25: guide nipple 26: supporter

27: grip 30: connector

31: first connection ring 32: second connection ring

40: welder body 50: welded wire feeder

100: welding machine

Claims (4)

A welding cable which moves along the longitudinal direction and is coated in a state in which a power line is positioned on an outer circumferential surface of a gas hose having an inner passage used as a flow path of carbon dioxide gas; A welding torch having a torch body having a nozzle formed at a distal end thereof, the welding being performed while the welding wire and the carbon dioxide gas are discharged to the outside through the nozzle; A first connection ring of tubular copper material inserted into an outer circumferential surface of a connection nipple which is an internal component of a grip coupled to the torch body of the welding torch, and fitted into an outer circumference of the first connection ring; Including a connecting member including a second connecting ring of tubular copper material coupled to the first connecting ring, The first connection ring is inserted into the outer peripheral surface of the connection nipple by a predetermined length and is coupled to each other while the outer boundary of the first connection ring and the connection nipple is silvered, An end power line of the welding cable is positioned on the outer circumferential surface of the first connecting ring and the inner circumferential surface of the second connecting ring and electrically connected to the first connecting ring and the second connecting ring to supply power to the welding torch. , The connecting portion of the welding cable and the welding torch maintains the shape defined by the first connecting ring and the second connecting ring so that the connecting portion of the welding cable and the welding torch is repeatedly formed by repeated use of the welding torch during the welding operation. Passive carbon dioxide welding torch connected to the welding cable by the connecting ring, characterized in that the deformation is prevented. delete The method of claim 1, The second connection ring is a manual carbon dioxide gas welding torch connected to the welding cable by a coupling ring, characterized in that coupled to the first connection ring while being pressed to the outer peripheral surface of the first connection ring in which the power line of the welding cable is located. . 4. The method according to any one of claims 1 to 3, Passive carbon dioxide welding torch connected to the welding cable by the connecting ring, characterized in that the first connection ring and the second connection ring is heat-treated, tubular copper material having a hardness of 25 ~ 35 is used.

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