KR200451165Y1 - Gouging torch - Google Patents

Abstract

The present invention effectively prevents leakage of compressed air for blowing molten metal during gouging welding, and prevents damage to parts of the torch caused by carelessness of the operator during welding or handling. It provides a gouging torch that efficiently improves the flow path of the compressed air injected into the furnace.

The gouging torch according to the present invention is provided with a supporting body 10 and a movable body 20 for picking up the carbon electrode 42 while angularly moving around the hinge shaft 14, and the supporting body 10 is provided. In the gouging torch, which is coupled to the rear end and regulates compressed air, and is composed of a cable 40 coupled to the rear end of the valve to supply electric power and compressed air, the valve for regulating the compressed air includes a control shaft. A globe valve 30 having a rod-shaped intermittent lever 32 coupled to 31 is connected to the rear end of the globe valve 30 while twisting the cable 40 while connecting the globe valve 30 and the cable 40 to each other. Combining the joint pipe 33 and the swivel 34 to prevent, the second half of the support body 10 to protect while wrapping the globe valve 30 and the joint pipe 33 and the swivel 34 and the cable 40 The cover 50 and the cap 56 is characterized in that combined.

Gouging, Torch, Globe Valve, Cover, Air Supply Path

Description

Gouging TORCH

The present invention relates to a gouging torch, more specifically, to effectively prevent leakage of compressed air for blowing molten metal during gouging welding, and torch generated by carelessness of the operator during welding or handling. The present invention relates to a gouging torch which efficiently improves a flow path of compressed air injected at a high speed through an electrode nozzle while preventing component damage.

Generally, gouging welding generates arc between carbon electrode and base metal to melt metal and blows molten metal by injecting high pressure air along the outer circumferential surface of carbon electrode to cut molten metal. It is a welding method that is mainly used to form grooves for removing or improving welding defects.

The gouging welding process starts with arcing on the surface of the carbon electrode and the base material, and concentrates the compressed air flow in the longitudinal direction of the carbon electrode to effectively remove the molten metal by the high temperature arc. The molten metal located in front of the end is removed while blowing with high pressure air.

The gouging torch used in the above-described gouging welding operation is basically provided with a support body and a movable body for picking up carbon electrodes while angularly moving around the hinge axis, and are coupled to the rear end of the support body to interrupt compressed air. And a cable coupled to the rear end of the valve to supply electric power and compressed air, and the cable has a structure in which a conductor is provided inside the sheath to simultaneously supply electric power and compressed air.

The gouging torch receives electric power from the gouging arc welder and compressed air from the air compressor through the cable, and the compressed air is opened by opening the valve connecting the cable and the support body. The compressed air passing through the air supply path is blown into the injection hole of the electrode nozzle holding the outer circumference of the upper end of the carbon electrode to continuously blow and remove the molten metal located in front of the lower end of the carbon electrode. Will be.

The related art proposed in connection with the gouging torch as described above is Korean Patent Application Publication No. 20-1997-027060 "Gouging Torch". The gouge torch is installed at the bottom of the electrode clamp lever with one-touch type, and when the push button of the valve body is pressed with a thumb, the air is discharged to the tip of the torch, and when the push button is released, It is configured to be sweet.

However, the above-mentioned gouging torch having a conventional one-touch open / close valve has a valve body installed in a narrow space at the bottom of the electrode clamping lever, so that the worker grasps the handle in the state of wearing protective gloves and thumbs up to the narrow space. There was a problem that it is inconvenient to insert.

On the other hand, the technology related to the conventional gouging torch has been proposed the Republic of Korea Patent Publication No. 10-0384064 "electrode holder for the gouging work". The electrode holder for the gouging operation is equipped with a flow control valve to adjust the amount of air supplied to the main body and the pressure lever side, and to open and close operation while rotating the control dial of the valve protruding toward the main body side in the forward and reverse directions.

However, in the conventional electrode holder for gouging work, when the operator holds the main body by hand and the welding operation is performed, the adjustment dial of the valve protruding to the side of the main body hits the operator's hand and rotates due to the air volume. There is a problem in that the quality of the processing surface is deteriorated due to excessive supply or the control dial is easily rotated by external force even when the holder is moved and stored after welding, and air is leaked finely.

In addition, the conventional electrode holder for the gouging operation is a branching air flows to the pressure lever side, which is delivered only to the main body side, and the first branch supply passage communicating with the supply passage between the proper intervals of the hinge pieces provided in pairs in the first supply pipe. Was formed. In addition, a second branch supply path was formed to connect from the end of the hinge piece of the second supply pipe to the supply path. And, the interference between the hinge piece and the hinge piece is installed so as to prevent the air passing through the first branch supply path of the first supply pipe flows to the outside when going to the second branch supply path of the second supply pipe to the outside both sides The sealing member having the penetrated through hole was joined so that the supply passages respectively formed in the inside of the first and second supply pipes were successively passed.

However, such a configuration for connecting the supply path on the main body side and the supply lever on the pressure lever side is formed at the center of the hinge piece so that the processing of the branch supply path is difficult and the assembly of the branch part is complicated. And, there is a problem in that air leaks due to wear of the sealing member of the silicon rubber material by the hinge piece rotating about the axis.

As such, the conventional gouging torches are easily operated by external force in the welding operation or handling process, and the opening and closing operation of the valve is inconvenient, and the compressed air is unnecessarily leaked and the gouging work efficiency is reduced. There is a problem, and the air flow path for supplying the compressed air passes through the center portion of the hinge piece and the hinge shaft, so that there is a problem of poor workability and assemblability, and thus an improvement is required.

Accordingly, the present invention has been made to improve such a problem of the prior art, and provides a new type of gouging torch which can effectively prevent the leakage of compressed air for blowing molten metal during gouging welding. It aims to do it.

It is also an object of the present invention to provide a new type of gouging torch to prevent damage to the torch parts caused by the carelessness of the operator during welding or handling.

In addition, it is an object of the present invention to provide a new type of gouge torch that can efficiently improve the flow path of compressed air injected through the electrode nozzle at high speed.

According to a feature of the present invention for achieving the above object, there is provided a support body and a movable body for picking up the carbon electrode rod while angular movement around the hinge axis, and is provided with a valve coupled to the rear end of the support body to control compressed air. It is composed of a cable coupled to the rear end of the valve to supply electric power and compressed air.The electric power supplied by the cable generates an arc between the carbon electrode and the base metal to melt the metal, and the main air formed inside the support body. In a gouging torch for discharging molten metal by circulating compressed air through a supply passage, the valve is a globe valve in which a rod-shaped intermittent lever is coupled to a control shaft, and at the rear of the globe valve is a globe valve. Join the valve and the cable while joining the seam and swivel to prevent the cable from twisting,

The latter part of the base body is a solution to the gouging torch, characterized in that for coupling the cover and the cap to protect the globe valve and the fitting pipe and the swivel and the cable.

In the gouging torch according to the present invention, the cover is inserted into the support body and the globe valve insertion hole is penetrated through the rear from the front, the tunnel portion through which the control shaft of the globe valve enters and passes through one side of the front circumference A protrusion is formed in a longitudinal direction, and at the end of the tunnel portion, an assembly hole is formed to allow the control shaft passing through the tunnel portion to be exposed to the outside of the cover so that the intermittent lever can be coupled to each other. In the outer circumferential surface between the end portion, the gouge torch, which prevents sliding when the cover is gripped, is formed at a predetermined interval.

In addition, in the gouging torch according to the present invention, the main air supply path of the support body forms a main branch air supply path which is located behind the hinge piece and opens to the upper surface of the support body, and the movable body is formed inside the movable body. A sub air supply passage is formed in the rear side of the main body, and the sub branch air supply passage opens in the rear side of the hinge piece while communicating with the sub air supply passage. The main branch air supply passage and the sub branch air supply passage are formed. By connecting to the connecting pipe can be distributed compressed air to the sub air supply path of the movable body.

According to the gouging torch according to the present invention as described above, the valve coupled to the rear end of the support main body is coupled to the globe valve coupled with the rod-shaped intermittent lever to the control shaft, and the joint pipe and the swivel coupled to the rear end of the globe valve By combining the cover and the cap surrounding the globe valve to protect the globe valve to the second half of the support body, it is possible to effectively prevent the leakage of compressed air for blowing molten metal during gouging welding operation, gouging It is possible to prevent damage to the parts of the torch caused by carelessness of the operator during welding or handling of the torch.

Then, by connecting the main branch air supply path of the support body and the sub branch air supply path of the movable body with a connecting pipe, the compressed air bypasses the hinge piece and is distributed to the sub air supply path of the movable body, thereby improving the sub air supply path. It is possible to easily assemble the hinge piece of the support body and the movable body while facilitating the processing, there is an effect that the leakage of air by the hinge operation does not occur.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings, FIGS. 1 to 4, and the same reference numerals will be given for components that perform the same function in FIGS. 1 to 4. On the other hand, in each figure and detailed description showing and referring to the construction and operation easily understood by those skilled in the art from a general gouging torch is 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 the technical features of the present invention are omitted, and only the technical configurations related to the present invention are briefly shown or Explained. In addition, although the size ratio between elements is somewhat different in the drawings of the drawings, or the size between the parts that are coupled to each other is expressed differently, the representation differences in such drawings are easily understood by those skilled in the art. The descriptions are omitted since they are possible parts.

1 is a cross-sectional view illustrating a gouging torch according to a preferred embodiment of the present invention, Figure 2 is a state in which the cover 50 is coupled to the support body 10 of the gouge torch according to a preferred embodiment of the present invention 3 is a perspective view illustrating a cover 50 of a gouge torch according to a preferred embodiment of the present invention, and FIG. 4 is a view of a globe valve in a cover of the gouge torch according to a preferred embodiment of the present invention. It is a figure for demonstrating a coupling state.

Referring to Figure 1, the gouging torch according to a preferred embodiment of the present invention is provided with a support body 10 and a movable body 20 for picking up the carbon electrode 42, a globe valve (Globe) to control the compressed air Valve: 30) and a cable 40 for supplying electric power and compressed air, and connecting the globe valve 30 and the cable 40, the joint pipe 33 and the swivel (prevention of twisting of the cable 40) Swivel: 34 is provided, and the cover 50 and the cap 56 to surround and protect the support body 10, globe valve 30 and the cable 40 is provided.

The gouging torch according to the present invention as described above opens the globe valve 30 while the operator grasps the grip portion 55 of the cover 50 and generates an arc between the carbon electrode 42 and the base metal to melt the metal. Compressed air is circulated through the main air supply passage 11 formed in the base body 10 and the sub air supply passage 21 of the movable body 20 to blow and remove the molten metal.

Looking at the gouging torch according to a preferred embodiment of the present invention in more detail, the electrode nozzle 15, the injection hole 16 is coupled to the upper surface of the front end portion of the support body 10, the movable body 20 The electrode nozzle 25 through which the injection hole 26 is drilled is coupled to the bottom of the front end portion.

The electrode nozzles 15 and 25 of the support body 10 and the movable body 20 are in contact with each other and ask the carbon electrode 42, and the electrode nozzles 15 of the support body 10 are carbon electrode rods 42. The outer circumferential surface of one side), and the electrode nozzle 25 of the movable body 20 presses one side of the outer circumferential surface of the carbon electrode rod 42 by the expansion force of the spring 17 elastically installed behind the hinge pieces 13 and 23. Will be given.

The spring 17 has the upper end supported by the support hole 28 provided on the bottom surface of the press lever 27 of the movable body 20, and the lower end of the spring 17 is provided on the support protrusion 18 provided on the upper surface of the rear end of the support main body 10. It is supported and elastically installed.

The electrode nozzle 25 of the movable body 20 is in contact with the electrode nozzle 15 of the support body 10 around the hinge shaft 14 by the expansion force of the spring 17, and the carbon electrode rod When picking up (42), press the pressure lever (27) to insert the carbon electrode (42) between the electrode nozzles (15, 25), and when the pressure is released, the electrode nozzles (15, 25) bit the carbon electrode (42). Will be given.

On the other hand, the hinge piece 23 is projected downward on the bottom surface of the rear half of the movable body 20, and the pair of hinge pieces 13 are projected upward on the upper surface of the rear half of the support body 10 at regular intervals. By inserting the hinge piece 23 of the movable body 20 between the hinge piece 13 of the support body 10 and hinged to the hinge shaft 14, the support body 10 and the movable body 20 are It is coupled to the angular movement around the hinge axis (14).

On the other hand, in the main air supply path 11 formed inside the support main body 10, the main branch air supply path 12 which is located behind the hinge piece 13 and drilled to the upper surface of the support main body 10 is formed. .

In addition, a sub air supply passage 21 is formed inside the movable main body 20 so as to be drilled from the rear surface of the movable main body 20 to the front side. The hinge piece 23 of the hinge piece 23 communicates with the sub air supply passage 21. A sub branch air supply passage 22 is formed to be drilled to the rear side.

The main branch air supply path 12 of the support body 10 described above and the sub branch air supply path 22 of the movable body 20 are connected by a connecting pipe 24 to thereby maintain the main air of the support body 10. The compressed air entering the supply path 11 is supplied to the sub air supply path 21 of the movable body 20 by bypassing the hinge pieces 13 and 23.

Therefore, the flow path of the compressed air does not pass through the central portion of the hinge pieces 13 and 23 angularly moving around the hinge shaft 14, so that leakage of the compressed air does not occur and the serve of the movable body 20 The hinge pieces 13 and 23 of the support main body 10 and the movable main body 20 can be easily assembled while the processing of the air supply path 21 and the sub-branch air supply path 22 is easy.

On the other hand, the rod-shaped intermittent lever 32 is coupled to the control shaft 31 of the globe valve 30 coupled to the rear end of the support main body 10 to regulate compressed air.

The rod-shaped intermittent lever 32 is easy to open and close the globe valve 30 during the gouging operation, and is located on the same line as the support body 10 when the globe valve 30 is opened, and the globe valve 30 ) Is closed at right angles to the support body (10) when closed.

And, the rear end of the globe valve 30 is coupled to the joint pipe 33 for connecting the cable 40.

On the other hand, the cover 50 is coupled to the rear half of the support main body 10 to protect the globe valve 30. The cover 50 is formed while the support body 10 and the insertion hole 51 in which the globe valve 30 is mounted penetrates from the front to the rear.

Then, the tunnel portion 52 through which the adjustment shaft 31 of the globe valve 30 enters and passes through is formed to protrude in a longitudinal direction on one side of the outer peripheral surface of the first half, and at the point where the tunnel portion 52 ends, the tunnel portion ( An assembly hole 53 is formed to allow the control shaft 31 passing through the 52 to be exposed to the outside of the cover 50 so as to couple the intermittent lever 32.

In addition, the outer circumferential surface between the mid end portion and the rear end portion of the cover 50 forms a grip portion 55 in which the protruding frame 56 protrudes at a predetermined interval to prevent slippage when the cover 50 is gripped.

Looking at the process of coupling the cover 50 to the rear half of the base body 10, first, the globe valve 30 coupled to the rear half of the base body 10 is inserted into the front side of the cover 30 (51) 4), the rod 30 of the globe valve 30 of the globe valve 30 is removed and the control shaft 31 of the globe valve 30 is positioned inside the tunnel portion 52 as shown in FIG. After fitting so that the support body 10 is pushed into the insertion hole 51 of the cover 50, the hinge piece 13 of the support body 10 and the hinge piece of the movable body 20 as shown in FIG. 23 is located in the cutout groove 54 formed in the upper surface of the front end of the cover 50.

At this time, the adjustment shaft 31 of the globe valve 30 is located in the assembly hole 53 as shown in Figure 2 through the tunnel portion 52, the outside of the cover 50 by the assembly hole 53 The rod-shaped intermittent lever 32 is to be assembled to the control shaft 31 exposed to.

Then, the rear end portion of the fitting pipe 33 enters the rear side insertion hole of the cover 50 and is positioned to be exposed to the outside. The rear end of the fitting pipe 33 is assembled with a swivel 34. By the swivel 34 having the rotation function, it is possible to easily connect the cable in a one-touch manner, it is possible to prevent the twisting of the cable 40 during the gouging operation.

In such an assembled state, the screw hole 19 drilled in the bottom portion of the support body 10 and the fastening hole 56 drilled in the bottom portion of the cover 50 coincide with the fixing bolts to fix and fasten the cover 50. This is done.

In addition, a cap 57 is provided on the outer circumferential surface of the rear end of the cover 50 to protect the exposed portion of the joint pipe 33 and the swivel 34 and the cable 40 coupled to the rear end of the joint pipe 33. If you combine to force the combination of gouging torch is complete.

As such, the globe valve 30 may be coupled by the tunnel portion 52 protruding to one side of the outer circumferential surface of the cover 50, and the cover 50 and the cap 57 may be supported by the support body 10. The globe valve 30 and the fitting pipe 33 and the swivel 34 and the cable 50 is to be protected while wrapping.

Although the gouging torch according to the preferred embodiment of the present invention as described above has been shown according to the above description and drawings, this is merely described, for example, and various changes and modifications without departing from the technical spirit of the present invention. It will be appreciated by those skilled in the art that this is possible.

1 is a cross-sectional view for explaining a gouge torch according to a preferred embodiment of the present invention,

2 is a view for explaining a state in which the cover 50 is coupled to the support body 10 of the gouging torch according to a preferred embodiment of the present invention,

3 is a perspective view showing a cover 50 of the gouging torch according to the preferred embodiment of the present invention,

4 is a view for explaining the coupling state of the globe valve to the cover of the gouge torch according to a preferred embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

10: supporting body 11: main air supply

12: main branch air supply passage 20: mobile main body

21: Sub air supply passage 22: Sub branch air supply passage

24: connector 30: globe valve

31: control shaft 32: intermittent lever

33: joint pipe 34: swivel

40: cable 50: cover

51: insertion hole 52: tunnel

53: Assemblyman 54: Incision groove

55: grip part 56: protrusion frame

Claims (4)

The valve body 30 coupled to the rear end of the support body 10 and the movable body 20 to pick up the carbon electrode 42 while angularly moving around the hinge shaft 14 and the support body 10 to control compressed air. ) And a cable 40 coupled to the rear end of the valve 30 to supply electric power and compressed air, An arc is generated between the carbon electrode rod 42 and the base metal by electric power supplied by the cable 40 to melt the metal, and compressed air is supplied to the main air supply path 11 formed inside the support body 10. In a gouging torch which is circulated to blow and remove molten metal, The valve 30 is a globe valve 30, the rod-shaped intermittent lever 32 is coupled to the control shaft 31, The latter half of the support body 10 is coupled to the cover 50 to protect while surrounding the globe valve 30, The cover 50 has an insertion hole 51 in which the support body 10 and the globe valve 30 are mounted, is penetrated from the front to the rear, Tunnel portion 52 through which the control shaft 31 of the globe valve 30 enters and passes through one side of the front circumferential surface is formed to protrude a predetermined section in the longitudinal direction, At the point where the tunnel portion 52 ends, the assembly hole 53 for allowing the control shaft 31 passing through the tunnel portion 52 to be exposed to the outside of the cover 50 to couple the intermittent lever 32 is provided. Gouging torch, characterized in that formed. delete The method of claim 1, In the main air supply path 11 of the support body 10 to form a main branch air supply path 12 which is located behind the hinge piece 13 and drilled to the upper surface of the support body 10, The inner side of the movable body 20 forms a sub air supply passage 21 which is opened from the rear side of the movable body 20 to the front side and communicates with the sub air supply passage 21 while the rear side of the hinge piece 23 is formed. To form a sub-branch air supply passage 22 to be opened, The main branch air supply passage 12 and the sub branch air supply passage 22 are connected to the connection pipe 24 so that the compressed air can be distributed to the sub air supply passage 21 of the movable body 20. Gouging torch, characterized in that. The method of claim 1, The rear end of the globe valve 30 is coupled to the joint pipe 33 and the swivel 34 connecting the globe valve 30 and the cable 40 while preventing the cable 40 from twisting, Gouging torch, characterized in that the outer peripheral surface of the rear cover 50, the coupling pipe (33) and the swivel (34) and the cap (56) for wrapping and protecting the cable (40).

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