KR102504775B1 - a torch for an automatic welder - Google Patents

Abstract

The present invention provides a torch for an automatic welder, wherein a welding wire supplied toward a base material from the fore-end of the torch for an automatic carbon dioxide welder can be guided, and the use lifetime of a consumable contact tip installed in a replacement manner for electric contact can be extended. The present invention relates to a torch for an automatic welder, comprising: a torch including an insulator and a gas diffuser provided sequentially at the fore-end of a protector body of a curved pipe installed to extend from a hand grip, having a nozzle installed therearound to overlap, and containing a guide pipe to guide the supply of a welding wire across the protector body and the nozzles; and a consumable contact tip provided at the fore-end of the guide pipe of the torch and installed in a replacement manner for the supply of a welding wire toward a base material through a passage in an axial direction and for electric contact. An auxiliary passage is provided at the fore-end of the contact tip on the same axial line with the passage of the contact tip, and a detachable cap-type auxiliary tip, which is additionally combined and installed in a one-touch fitting assembly manner using one or more magnets installed to protrude to an inner wall and can be replaced and used easily, is included, thereby preserving an existing contact tip of a torch for an automatic welder and being additionally combined and installed on the fore-end of the contact tip in a detachable manner with one-touch fitting assembly using magnets to be able to be replaced and used simply.

Description

A torch for an automatic welder}

The present invention relates to a torch for an automatic carbon dioxide welding machine, and in particular, an automatic welding machine capable of extending the service life of a consumable contact tip installed in a replaceable manner for guiding and electrically contacting a welding wire supplied from the front end of the torch to a base material. is about the torch of

The torch of the carbon dioxide automatic welding machine is provided with an insulator and a gas diffuser sequentially at the tip of the curved protection body extending from the hand grip, and nozzles are overlapped around it, and a welding wire spans the protection body and nozzles. There is a built-in guide tube that guides the supply of

In addition, the tip of the guide tube of the torch is provided with a contact tip of a consumable that is installed in a replaceable manner for guiding and electrically contacting the supplied welding wire.

The contact tip, which is a consumable in the torch of this automatic welding machine, is deformed due to abrasion of the inner diameter due to continuous contact and friction with the welding wire supplied for electrical contact with the high-temperature environment, resulting in poor electrical contact or maintaining stable supply. Therefore, during the welding operation, the worker periodically performs an operation of stopping welding and replacing the damaged contact tip with a new contact tip.

Frequent replacement of contact tips in such automatic welding machine torches is a major cause of welding defects, and contact tips are made of conductive copper and are relatively expensive, resulting in material waste.

Therefore, in recent years, the tip of the contact tip of the automatic welding machine torch is divided into two parts in the length direction of the body, that is, the tip where deformation due to electrical contact and friction occurs, to replace parts or to extend the service life of the contact tip. Contact tips containing a wear-resistant ceramic ring that responds to the contact friction with the supplied welding wire are being developed and used.

However, in the contact tips of the automatic welding machine torch, the electronic partial replacement method contact tip divides the body into a front part and a rear part where deformation occurs in the longitudinal direction, so that they are mutually screwed together, and when deformation occurs in the contact tip, only the front part It is being replaced, which could reduce material waste, but cannot be applied to existing contact tips, and the problem of having to produce new contact tips that are separately manufactured with a newly developed mold, and replacing the tip of the contact tip that has been deformed In this case, many inconveniences such as cumbersome replacement work in which the distal end must be screwed several times are followed.

The contact tip with a built-in heat-resistant and abrasion-resistant ceramic ring extends the service life by embedding a ceramic ring on the inner wall of the tip where contact friction with the supplied welding wire occurs, and reduces material waste by delaying the replacement of the contact tip. However, as in the former, there is a problem in that a new contact tip cannot be applied to an existing contact tip and a new contact tip separately manufactured with a new mold has to be produced.

Korean Registered Patent No. 10-1107879 Korean utility model registration 20-0423793

The present invention preserves the contact tip of the existing automatic welding machine torch as it is, and uses a magnet at the tip of the contact tip to provide an auxiliary tip that can be easily replaced and used by additionally combining and installing by a detachable method by one-touch fitting assembly. It is to provide a torch of an automatic welding machine having.

Another object of the present invention is an automatic welding machine in which the installation state of the auxiliary tip is stable by allowing the auxiliary tip to be coupled in a chin-up method by a simple rotation operation using a ring that is fixed by being forcedly fitted around the tip of the contact tip. It is in providing the torch of

Another object of the present invention is to provide a torch for an automatic welding machine in which deformation due to contact friction of the welding wire does not occur in the passage of the contact tip by making the inner diameter of the passage of the auxiliary tip smaller than the inner diameter of the passage of the welding wire of the existing contact tip. .

An object of the present invention is to provide a torch of an automatic welding machine that can extend the lifespan of a consumable contact tip installed in a replacement manner for guiding and electrically contacting a welding wire supplied from the tip of the torch of the automatic carbon dioxide welding machine to the base material. is in providing

In the present invention, an insulator and a gas diffuser are sequentially provided at the front end of a bend pipe extending from a hand grip, and nozzles are overlapped around them, inducing supply of welding wire across the protection body and nozzles. A torch of an automatic welding machine equipped with a torch with a built-in guide tube and a contact tip of a consumable that is installed in a replaceable manner for electrical contact and supply of welding wire to the base material through an axial passage at the tip of the guide tube, An auxiliary passage provided on the same axis as the passage of the contact tip is provided at the tip of the contact tip, and additionally coupled and installed by one-touch fitting assembly method using at least one magnet protruding and installed on the inner wall, so that it can be easily replaced. It is equipped with a detachable cap-type auxiliary tip that preserves the contact tip of the existing automatic welding machine torch as it is, and is additionally coupled and installed by a detachable method by one-touch fitting assembly using a magnet at the tip of the contact tip. can be used interchangeably.

According to the torch of the automatic welding machine according to the present invention, the contact tip of the existing automatic welding machine torch is preserved as it is, and the auxiliary tip is coupled and installed at the tip of the contact tip by one-touch fitting assembly of simple rotation operation using a magnet, so that the damaged The replacement of the auxiliary tip is simple and easy, and thus the welding workability and the maintenance and management of the torch of the automatic welding machine are easy.

In addition, the present invention uses a ring that is fixed by being forcedly fitted around the front end of the contact tip so that the auxiliary tip is coupled in a chin-up method by a simple rotation operation, so that the installation state of the auxiliary tip is stable and product quality is improved. do.

In addition, the present invention makes the inner diameter of the passage of the auxiliary tip smaller than the inner diameter of the passage of the welding wire of the contact tip so that deformation due to contact friction of the welding wire does not occur in the existing contact tip, thereby extending the service life of the contact tip and reducing material waste. There are possible effects.

1 is a partially cut cross-sectional view schematically showing a torch configuration of an automatic welding machine according to the present invention.
Figure 2 is a perspective view showing the ring applied to the torch of the automatic welding machine of the present invention.
3 and 4 are enlarged cross-sectional views of main parts showing parts (a) of FIG.
3 is an explanatory view showing how an auxiliary tip is used by being coupled to the front end of a contact tip;
4 is an explanatory diagram showing a process in which the auxiliary tip is separated from the contact tip and replaced.
(a) (b) of FIG. 5 is a cross-sectional view taken along the line AA of FIG. 3,
(a) is a state when the auxiliary tip is coupled or separated from the tip of the contact tip,
(b) is a state in which the auxiliary tip at the tip of the contact tip is engaged with the hanging part of the ring.

Next, an embodiment of the present invention will be described. 1 to 3 show details of the torch of the automatic welding machine according to the present invention.

The present invention provides a torch for an automatic welding machine that can extend the lifespan of a consumable contact tip installed in a replaceable manner for guiding and electrically contacting a welding wire supplied from the tip of the torch of the automatic carbon dioxide welding machine to the base material. .

In the drawing, 10 is a torch. In this torch (10), an insulator (13) and a gas diffuser (14) are sequentially provided at the front end of a protective body (12) of a bend extending from a hand grip (11), and a nozzle (15) is overlapped around them. It is installed, and the guide tube 16 that guides the supply of the welding wire (W) across the protection body 12 and the nozzles 15 is built-in, and at the tip of the guide tube 16 of the torch 10 A contact tip 18 of consumables installed in a replaceable manner is provided for electrical contact and supply of the welding wire W to the base material through the axial passage 18a.

This configuration is the same as the conventional one, and the key technology in the present invention is to preserve the contact tip of the existing automatic welding machine torch as it is and use a magnet at the tip of the contact tip to attach and detach by one-touch fitting assembly. It is characterized by improving the torch structure of an automatic welding machine with an auxiliary tip that can be additionally installed and easily replaced.

In the present invention, the cap-shaped auxiliary tip 20 is additionally coupled to the front end of the contact tip 18 by a one-touch fitting assembly method using magnetic force, so that it can be easily replaced. At this time, the auxiliary tip 20 is a conductor.

In other words, a ring 30 of magnetic material is additionally provided around the front end of the contact tip 18, and the gap-type auxiliary tip 20 protrudes from the inner wall thereof. At least one magnet M is installed. It will be simply replaced by a detachable method that is coupled or separated by a one-touch fitting assembly method with the garakji 30.

To explain this in more detail, the auxiliary tip 20 is tightly fixed around the front end of the contact tip 18 in a forcible fit method, and the female entrances 32 corresponding to the magnets M on the circumferential surface and By using the ring 30 provided with the male hook 34, the magnets (M) with a simple rotation operation engage the contact tip 18 and the contact tip 18 or access paths It is separated through (32).

Also, the auxiliary tip 20 has an auxiliary passage 20a installed consecutively on the same axis as the passage 18a of the contact tip 18. At this time, as shown in FIG. 3 , the inner diameter R2 of the auxiliary passage 20a of the auxiliary tip 20 is smaller than the inner diameter R1 of the passage 18a of the contact tip 18 .

In other words, the inner diameters of the passage 18a of the contact tip 18 and the auxiliary passages 20a of the auxiliary tip 20 have a relationship R1 > R2, so that the welding wire W supplied through the guide pipe 16 Electrical contact with the contact tip 18 will not occur in the passage 18a, but only in the auxiliary passage 20a of the auxiliary tip 20, thereby preserving the contact tip 18.

Therefore, the present invention uses the auxiliary tip 20, which is locally and detachably installed at the tip of the contact tip 18 of the automatic welding machine torch 10, to minimize material waste and to perform simple rotation operations. It is possible to improve the welding workability and the torch maintenance of the automatic welding machine by replacing it with a one-touch method.

A process of replacing the auxiliary tip 20 of the automatic welding machine torch 10 according to the present invention will be described with reference to FIGS. 4 to 5 .

3 and 4 show a process in which the auxiliary tip 20 locally installed at the front end of the contact tip 18 of the torch 10 of the automatic welding machine is combined with or separated from the contact tip 18.

3 is a state in which the auxiliary tip 20 is coupled to the front end of the contact tip 18 and is waiting for separation, and the magnets M protruding from the inner wall of the auxiliary tip 20 are ) It is coupled in a chin-up method on the hooking part 34 out of the entrance 32. (See FIG. 5 (b))

4 is a separate view of the auxiliary tip 20, that is, after matching the magnets M of the auxiliary tip 20 with the entrances and exits 32 of the ring 30, the auxiliary tip 20 in the direction of the arrow shown in the drawing. ) is lowered to separate from the front end of the contact tip 18 and replace it. (See FIG. 5 (a))

5(a)(b) shows a process of replacing or binding the auxiliary tip 20 by cutting along the line A-A of FIG. 3, and (a) of FIG. 5 shows the inner wall of the auxiliary tip 20 The protruding magnets (M) are matched with the entrances and exits 32 of the garakji 30, which is a state when the auxiliary tip 20 is coupled or separated.

In (b) of FIG. 5, the auxiliary tip 20 is rotated in the direction of the arrow shown in the drawing with the contact tip 18 as the center of rotation, so that the magnets M protruding from the inner wall of the auxiliary tip 20 20) is placed on the hanging part 34 and is bound.

The torch of the automatic welding machine of the present invention configured as described above maintains the contact tip of the existing automatic welding machine torch as it is, and is additionally coupled and installed by a detachable method by one-touch fitting assembly using a magnet at the tip of the contact tip to easily replace it. By having an auxiliary tip that can be used, it is easy to maintain and manage the torch as well as workability at the welding site.

Although one embodiment of the present invention has been described as above, the present invention is not limited thereto and may be modified within the scope described in the claims.

10: Torch
11: handle grip
12: Protect Body
13: Insulator
14: gas diffuser
15: nozzle
16: guide
18: contact tip 18a: passageway
20: auxiliary tip 20a: auxiliary passage
30: garakji 32: entrance 34: stiff part

Claims (3)

An insulator and a gas diffuser are sequentially provided at the tip of the protective body of the bend pipe extending from the hand grip, and nozzles are overlapped around it, and guidance for inducing the supply of welding wire across the protective body and the nozzles A torch with a built-in tube, and a cap-type auxiliary tip equipped with an auxiliary passage in addition to the contact tip of the replacement consumable for electrical contact and supply of welding wire to the base material through an axial passage at the tip of the guide pipe of the torch In the torch of the automatic welding machine provided,
At least one or more magnets protruding from the inner wall of the auxiliary tip; and
It is tightly fixed around the front end of the contact tip in a forcible fit method and includes female entrances and male locking parts corresponding to magnets provided on the inner wall of the cap-shaped auxiliary tip on the circumferential surface,
Here, the auxiliary tip is allowed to come in and out through the entrance and exit provided in the ring, and is separated and combined with the contact tip, and at the same time, the auxiliary tip is provided on the inner wall of the auxiliary tip by rotation operation in a state of being combined with the contact tip A torch of a welder having a detachable cap-type auxiliary tip, characterized in that the magnets are bound to the auxiliary tip at the front end of the contact tip by chin-up and magnetic force in the ring engaging portion. delete According to claim 1,
The torch of the automatic welding machine further comprising having an inner diameter of the auxiliary passage of the auxiliary tip smaller than an inner diameter of the passage of the contact tip.

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