KR20190043204A - Carbon dioxide welding device - Google Patents

Abstract

The present invention relates to a carbon dioxide welding apparatus which has a torch body engaged with a welding cable on a rear end unit. The carbon dioxide welding apparatus is capable of being engaged with the torch body, needing no tip replacement because of an abrasion since no tip is necessary for welding, simplifying processes, removing a weaving by a welding robot, simplifying the apparatus even more since there is no need for a cooling apparatus, dressing, cutter, and cooling filter, and accordingly reducing costs and improving work efficiency. The carbon dioxide welding apparatus comprises: a gas diffuser including a first discharge hole formed by penetrating an external side surface; and a welding tip engaged with the gas diffuser to include a second discharge hole formed by penetrating an external side surface. When the gas diffuser is engaged with the welding tip, the first discharge hole and the second discharge hole penetrate. According to the present invention, the apparatus is capable of preventing the welding tip from covering the discharge hole of the gas diffuser even if the gas diffuser is made smaller, thereby sufficiently decreasing the size of the gas diffuser and improving an engagement force between the gas diffuser and the welding tip.

Description

[0001] The present invention relates to a carbon dioxide welding device,

Generally, carbon dioxide welding is performed by supplying a welding wire through a welding torch and generating an arc between the base metal and the welding material. At this time, it is a welding method that improves the welding quality by preventing the oxidation of the molten metal by releasing the carbon dioxide gas to the vicinity of the arc and blocking the welded portion to the atmosphere. This carbon dioxide welding is advantageous in terms of work efficiency because continuous welding is possible through continuous supply of welding wire, unlike the case of a non-continuous general covered arc welding.

Carbon dioxide welding equipment is especially used in large ship manufacturing. When manufacturing large vessels, a plurality of fuselages are manufactured by individually welding and assembling the divided steel plates on the ground, and the plurality of fuselages are carried to the dock and placed in the design position, and then welded again. That is, in order to manufacture a large-sized ship, a carbon dioxide welding apparatus is often used because a great number of welds must be performed quickly.

1 is a perspective view schematically showing a conventional carbon dioxide welding apparatus.

Referring to FIG. 1, a carbon dioxide welding apparatus according to the prior art includes a gas diffuse and a welding tip coupled to the gas diffuse.

The gas diffuse includes an exhaust hole capable of discharging carbon dioxide. The exhaust hole is formed through the outer surface of the gas diffuser. Carbon dioxide passing through the inside of the gas diffuser is discharged to the outside of the gas diffuser through the exhaust hole.

The welding tip is coupled to the distal end of the gas diffuse. That is, the rear end of the welding tip engages with the front end of the gas diffuse. The welding tip should be replaced after a predetermined time has elapsed since the spatter generated as welding proceeds. Thus, the welding tip and the gas diffuse are separately formed so that the welding tip can be replaced. That is, when replacement of the welding tip is required, a new welding tip is coupled to the gas diffuser after detaching the conventional welding tip.

And a male screw portion for engaging with the gas diffusing portion is formed on an outer side surface of a rear end portion of the welding tip. The male thread portion is formed by projecting radially outward from the outer surface of the rear end portion of the welding tip. A female screw portion is formed on the inner surface of the distal end portion of the gas diffuser corresponding to the male thread portion of the welding tip.

The male threaded portion of the welding tip and the female threaded portion of the gas diffuse are engaged and engaged to couple the gas diffuse and the welding tip. That is, a part of the welding tip is inserted into the gas diffuse, and the gas diffuse and the welding tip are engaged.

The size of the gas diffuser and the welding tip must be reduced in order to miniaturize the carbon dioxide welding apparatus according to the prior art. However, when the size of the gas diffuse and the welding tip is reduced, the following problems arise.

When the length of the gas diffuse is reduced, the distance between the female screw portion and the discharge hole is reduced. Therefore, the rear end of the welding tip, which is inserted into the inside of the gas diffuser, is shielded from the discharge hole, which is a problem. That is, in the welding tip, the male screw part is inserted into the gas diffusing part beyond the female screw part to block the open exhaust hole. In this case, carbon dioxide passing through the interior of the gas diffuser can not be discharged to the outside of the gas diffuser, which is a problem.

The present invention relates to a carbon dioxide welding apparatus for welding a base material.

The present invention relates to a laser welding apparatus and a welding torch capable of being welded, and more particularly, to a welding apparatus and a torch for enabling welding using laser welding, A laser welding apparatus and a welding torch capable of welding can be simplified so as to simplify the apparatus and thus improve the working efficiency while reducing the cost by eliminating the need for a cooling apparatus, a dressing, a cutter and a cooling filter .

The present invention has been devised to solve the above-described problems, and it is intended to provide a carbon dioxide welding apparatus capable of miniaturization.

In order to solve the above-described problems, the present invention may include the following configuration.

The carbon dioxide welding apparatus according to the present invention comprises: a torch body having a welding cable coupled to a rear end thereof; A gas diffuser coupled to a front end of the torch body and including a first exhaust hole formed through an outer surface of the torch body; and a second exhaust hole coupled to a front end of the gas diffuser, Wherein the first gas discharge hole and the second gas discharge hole penetrate each other when the gas diffuse and the welding tip are coupled to each other. The welding apparatus may further include a welding portion formed at an outer surface of the gas diffusing portion and a female thread portion formed at an inner surface of the welding tip. A gas diffuse coupled to a distal end of the torch body; a welding tip coupled to a distal end of the gas diffuse; Comprising a coupling for coupling the welding tips and the fuse, and the coupling portion may comprise a male screw formed on an outer surface of the gas diffuse, the female screw portion formed on an inner surface of the welding tip.

According to the present invention, the following effects can be obtained.

The present invention can be implemented such that the welding tip does not cover the exhaust hole of the gas diffuser even when the size of the gas diffuse is reduced, thereby improving the bonding force between the gas diffuse and the welding tip while sufficiently reducing the size of the gas diffuse.

1 is a perspective view schematically showing a carbon dioxide welding apparatus according to the prior art;
FIG. 2 is a perspective view schematically showing a carbon dioxide welding apparatus according to the present invention; FIG.
3 is a schematic exploded perspective view for explaining a gas diffuse and a welding tip of a carbon dioxide welding apparatus according to the present invention.

It should be noted that, in the specification of the present invention, the same reference numerals as in the drawings denote the same elements, but they are numbered as much as possible even if they are shown in different drawings.

Meanwhile, the meaning of the terms described in the present specification should be understood as follows.

The singular < RTI ID = 0.0 > terms " are < / RTI > understood to include a plurality of representations unless the context clearly dictates otherwise and are intended to distinguish one element from another, .

Quot; includes, " or " comprises ", is to be understood as not pre- excluding the presence or possibility of one or more other features, numbers, steps, operations, elements, parts or combinations thereof.

 It should be understood that at least one term includes all possible combinations from one or more related items. For example, the meaning of at least one of the first item, the second item and the third item is not limited to the first item, the second item, or the third item, and two of the first item, the second item, Means a combination of all items that can be presented from the above.

In addition, since the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, the present invention is not necessarily limited to that shown in the drawings, and the thickness may be enlarged .

Hereinafter, preferred embodiments of a carbon dioxide welding apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view schematically showing a carbon dioxide welding apparatus according to the present invention. 3 is a schematic exploded perspective view for explaining a gas diffuse and a welding tip of a carbon dioxide welding apparatus according to the present invention. 4 is a schematic side view for explaining a gas diffuse and a welding tip of a carbon dioxide welding apparatus according to the present invention. 5 is a cross-sectional view schematically showing a carbon dioxide welding apparatus according to the present invention.

2 to 5, the carbon dioxide welding apparatus according to the present invention includes a torch body, a gas diffuse coupled to the torch body, and a welding tip coupled to the gas diffuse. The gas diffuse includes a first discharge hole formed through an outer surface of the gas diffuser, and the welding tip includes a second discharge hole formed through the outer side surface thereof.

The torch body is engaged with a welding cable. That is, the welding cable is coupled to the rear end of the torch body. The torch body functions to fix the tip end of the welding cable and to connect the flexible welding cable with the gas diffuse.

The gas diffuse is coupled to the torch body. The gas diffuser includes a first exhaust hole formed through an outer surface thereof. Carbon dioxide gas supplied along the welding cable through the first discharge hole of the gas diffuse is discharged to the outside of the gas diffuse.

The welding tip is coupled to the gas diffuse. The welding tip includes a second discharge hole formed through the outer side surface thereof. The second exhaust hole is formed to penetrate the first exhaust hole when the welding tip is coupled to the gas diffuse. Therefore, the carbon dioxide gas discharged through the first discharge hole passes through the second discharge hole at the same time, and is discharged to the outside of the gas diffusing device. Accordingly, the carbon dioxide welding device according to the present invention has the following effects .

First, when the length of the gas diffuse decreases as the gas diffuse is reduced, the first exhaust hole is adjacent to the front end of the gas diffuse. In this case, even if the welding tip is coupled to the gas diffuse, since the second discharge hole is formed in the welding tip, there is no fear of covering the first discharge hole of the gas diffuse.

When the welding tip and the gas diffuse are engaged, there is a portion overlapping between the welding tip and the gas diffuse. However, since the second exhaust hole exists in the welding tip, the welding tip does not obstruct the carbon dioxide gas discharged from the first discharge hole, despite the overlapping portion of the welding tip and the gas diffuse. Therefore, the size of the gas diffuse can be sufficiently reduced without interfering with the discharge of the carbon dioxide gas from the gas diffuse.

Secondly, the overlapping portion of the welding tip and the gas diffuser generated when the welding tip is inserted into the gas diffuser has a large relationship with the bonding force between the welding tip and the gas diffuse. As the overlapping portion between the welding tip and the gas diffuse becomes larger, the bonding force between the welding tip and the gas diffuse increases. According to the carbon dioxide welding apparatus according to the present invention, since the second discharge hole penetrating the first discharge hole is formed in the welding tip, even if the overlapping portion between the welding tip and the gas diffuse becomes large, . Therefore, even if the gas diffuse is reduced, the bonding force between the welding tip and the gas diffuse can be made strong.

Hereinafter, the torch body, the gas diffuser, the first exhaust hole, the welding tip, and the second exhaust hole will be described in detail with reference to the accompanying drawings.

2 to 5, the torch body is engaged with the welding cable. That is, the welding cable is coupled to the rear end of the torch body. In addition to the welding cable, a grip portion provided with an operation switch of the carbon dioxide welding apparatus according to the present invention may be coupled to the rear end of the torch body. The torch body has a function of fixing the flexible welding cable to connect the welding cable to the gas diffuse

do. Accordingly, the gas diffuser is coupled to the tip of the torch body. Hereinafter, a preferred embodiment of a carbon dioxide welding apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view schematically showing a carbon dioxide welding apparatus according to the present invention. 3 is a schematic exploded perspective view for explaining a gas diffuse and a welding tip of a carbon dioxide welding apparatus according to the present invention. 4 is a schematic side view for explaining a gas diffuse and a welding tip of a carbon dioxide welding apparatus according to the present invention

The torch body is composed of an outer tube and an inner tube. The outer tube is formed to have the same diameter as the welding cable. And the outer surface is joined to the welding cable. Referring to FIGS. 2 to 5, the gas diffuser is coupled to the torch body at the inner tube of the torch body. That is, a fixing portion for coupling with the gas-gas diffusing member is formed. A diffuse is coupled to the tip of the torch body. Accordingly, the gas diffuse is coupled to the tip of the torch body, and the welding cable is connected to the rear end of the torch body, so that the gas diffuse and the welding cable are connected. Thereby, the carbon dioxide gas passing through the welding cable and the welding wire are supplied to the gas diffuse. The gas diffuser is coupled to the torch body by a securement portion. The fixing part includes a first fixing part formed on the gas diffuse and a second fixing part formed on the inner tube of the torch body. The first fixing portion may be a male screw or a female screw. The second fixing portion may be a female screw if the first fixing portion is a male screw, and may be a male screw if the first fixing portion is a female screw. The gas diffuser and the torch body are engaged while the first fixing part and the second fixing part are engaged and engaged.

2 to 5, the gas diffuse includes the first discharge hole. The first exhaust hole is formed through the outer surface of the gas diffuser. That is, the first exhaust hole is formed to communicate the inside and the outside of the gas diffuser. The carbon dioxide gas supplied to the gas diffuser along the welding cable is discharged to the outside of the gas diffuser through the first discharge hole.

And the nozzle may be disposed so as to surround the outside of the gas diffuser. The nozzle is coupled to the distal end of the outer tube of the torch body. The nozzle collects and directs the carbon dioxide gas discharged through the first discharge hole of the gas diffuser forward.

2 to 5, the welding tip supplies a welding wire for welding and generates an arc between the welding wire and a base material to be welded. The welding tip supplies an electric current so that an arc is generated between the base material and the welding wire.

The welding tip is coupled to the gas diffuse. That is, the welding tip is joined to the tip of the gas diffuse. The welding tip and the gas diffuse are coupled to communicate with each other. The welding wire penetrating the gas diffuse through the welding cable is supplied to the welding tip. The welding tip is also electrically connected to the welding cable through the torch body and the gas diffusers to generate an arc.

Referring to FIG. 2, the welding tip includes the second discharge hole. A second discharge hole is formed through the outer surface of the welding tip. The second discharge hole is formed at the rear end of the welding tip. As described above, the second discharge is formed so as to pass through the first discharge hole when the welding tip and the gas diffuse are coupled to each other. Accordingly, the second discharge hole corresponds to the shape of the first discharge hole The second exhaust hole may be partially overlapped with the first exhaust hole, so that the second exhaust hole may be formed in a shape corresponding to a shape of a part of the first exhaust hole.

2 to 5, the carbon dioxide welding apparatus according to the present invention may further include a coupling unit for coupling the gas diffuse and the welding tip.

The coupling portion may include a male screw portion formed on an outer surface of the gas diffusing portion and a female screw portion formed on an inner surface of the welding tip. That is, the gas diffuse is inserted into the inside of the welding tip, and the welding tip and the gas diffuse are engaged. When the welding tip is inserted into the gas diffusing pipe and the gas diffusing pipe is inserted into the gas diffusing pipe, the welding tip is inserted into the gas diffusing pipe which becomes smaller as the gas diffusing pipe is smaller, And the gas diffuse is not easily combined. Further, if the welding tip is inserted into the gas diffusing pipe which has already been reduced, the inner diameter or the inner length of the gas diffusing pipe must be reduced, which may interfere with the movement of the carbon dioxide gas passing through the inside of the gas diffusing pipe.

According to the carbon dioxide welding apparatus according to the present invention, the welding tip is coupled to the outside of the gas diffuse.

That is, the gas diffuse is inserted into the inside of the welding tip to join the welding tip with the gas diffuse.

The diameter of the rear end portion of the welding tip is not increased because the diameter of the rear end portion of the welding tip is narrowed toward the front end portion. Therefore, the size of the carbon dioxide welding apparatus according to the present invention is not affected. Further, since the size of the rear end of the welding tip is larger than the size of the front end of the gas diffuse even if the size of the gas diffuse is reduced, it is easier to combine the welding tip with the gas diffuser as compared with the prior art .

Further, since the welding tip is not inserted into the gas diffusing pipe, the movement of the carbon dioxide gas passing through the inside of the gas diffusing pipe is not obstructed. Since only the welding wire passes through the inside of the welding tip and the carbon dioxide gas does not pass therethrough, the gas diffusing is inserted into the inside of the welding tip to reduce the strike of the welding tip, It is acceptable.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. Will be clear to those who have knowledge of.

Claims (1)

A torch body to which a welding cable is coupled at a rear end;
A gas diffuser coupled to the torch body and including a first exhaust hole formed through an outer surface thereof; And
And a second exhaust hole coupled to the gas diffusing member and including a second exhaust hole formed through an outer surface thereof, wherein when the gas diffusing member and the welding tip are coupled, the first exhaust hole and the second exhaust hole penetrate each other Wherein the carbon dioxide welding device is a carbon dioxide welding device.

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