KR102518162B1 - Extension wire feeder and welding system comprising same - Google Patents

Abstract

The present invention relates to an extension wire feeder and a welding system including the same, and in particular, a housing having a cylindrical shape; a part-fixing body detachably coupled to the front opening of the housing; a motor that generates power required for feeding the welding wire in a state installed in the housing; A wire feeding means which is rotated by the power of a motor in a detachably installed state on the support member provided on the front surface of the part fixing body and feeds the welding wire passing through the main wire feeder to the wire feeding member side; including and extending It constitutes a wire feeder, and at least one such extension wire feeder is installed between the main wire feeder and the welding torch in a welding system having a welding machine main body, a main wire feeder, a gas cylinder, and a welding torch.
Therefore, the welding wire can be smoothly transported to a long distance using an extension wire feeder without moving the welding machine main body and the main wire feeder, so that welding can be performed easily even at a long distance. Through this, it is possible to significantly reduce the process and wage unit cost, and also to greatly improve the competitiveness of the price and quality of manufactured products through the shortening of the production period.

Description

Extension wire feeder and welding system including the same

The present invention relates to an extension wire feeder and a welding system including the same, and more particularly, to an extension wire feeder manufactured separately from the main wire feeder, and to MIG (Metal Inert Gas) welding or carbon dioxide (CO₂) ) Applied to the welding system, that is, by further installing the extension wire feeder manufactured separately between the welding torch and the main wire feeder connected to the welding machine body of the MIG or CO₂ welding system, the welding wire can be supplied without moving the welding machine body and the main wire feeder It relates to an extension wire feeder invented so that it can be easily welded even at a long distance by smoothly transporting it to a long distance, and a MIG or CO2 welding system including the same.

In general, MIG welding is called MIG welding, which is short for metal inert gas welding. It supplies consumable wire electrodes (filler metal) at a constant speed to generate an arc between the base metal and the filler metal, which is melted by the heat of the arc and passes through the arc column. It is a method of welding by moving to the molten pool.

At this time, the consumable electrode and the protective gas for preventing the infiltration of foreign matter in the air are supplied together from the welding torch to block the air to protect the arc and the melting area.

When the shielding gas is an inert gas, it is called MIG welding, when carbon dioxide gas is used, it is called CO2 welding, and when a gas mixed with carbon dioxide gas and Ar gas is used, it is called MAG (Metal Active Gas) welding.

It is a process that can be semi-automatic and automated and mainly uses direct current voltage, but also uses constant alternating current.

Such a MIG welding machine and CO2 welding machine have the following advantages.

First, the operation of the welding machine is simple, so welding is easy, second, the welding speed is fast, third, there is no slag and spatter is minimized, so there is no need for post-welding treatment, and fourth, the welding efficiency is 95% compared to 60% for manual covered arc welding. Fifth, welding is possible in all positions, penetration is large, and current density is high.

On the other hand, the MIG and CO2 welding system as described above is a welding machine body that controls the overall operation of the welding machine, a wire feeder that supplies welding wires, a gas cylinder filled with inert gas, and a welding gun that welds the base material by generating an arc. Or it has a form consisting of a welding torch.

However, MIG welding is difficult to perform at a long distance from the welder because the consumable wire along with the inert gas must be continuously supplied from the welder toward the welding torch as the welding process progresses.

Accordingly, a wire supplying device for arc welding such as US Patent No. 7364059 has been developed and used, which automatically and continuously supplies consumable welding wire so that the welding operation can be continued even at a long distance from the welding machine.

A conventional wire supply device 100 as described above includes a power supply device 102 as shown in FIG. 1; A wire feeder 104 connected to the power supply 102 and equipped with a reel 110 for supplying stored wire, a welding torch 108 for pulling and supplying the wire supplied from the wire feeder 104, and a power supply 102 and a controller 106 that controls the wire feeder 104.

However, when the wire is supplied by the wire feeder (reel) installed in the wire feeder 104 and the welding torch 108, a slip phenomenon occurs between the wire and the roller constituting the feeder, so the wire feeder 104 If the distance between the ) and the welding torch 108 is greater than a certain distance, synchronization of the wire supply between the wire feeder 104 and the welding torch 108 is not properly performed, so that the supplied wire sags in the middle, causing the welding torch ( 108), the distance is still limited because the wire is not smoothly transferred.

In addition, since the wire supply device has a reel (transfer device) installed inside the welding torch 108 to pull the wire supplied from the wire feeder 104 and supply it to the workpiece, the weight of the welding torch 108 becomes heavy. There is also a problem that the operator cannot easily handle the welding torch 108 .

In addition to this, as shown in FIG. 2, the wire is located between the rollers installed facing up and down in the welding torch 200 and the wire feeder 210, respectively, so that the wire is transported by friction between the roller and the wire, so the frictional force between the roller and the wire In this small case, as described above, the wire is not properly transported. To increase the frictional force between the wire and the roller, the wire is transported by pressing the upper or lower roller strongly toward the roller facing it. In this case, the surface of the wire is damaged. This may cause another problem in that the transfer of the wire is rather reduced and the transfer of the wire toward the welding torch 200 is not made in a timely manner.

Therefore, the weight of the welding torch is light, so that the welding work is easy and the wire is transferred smoothly, so that welding can be easily performed even in a place where the distance from the welder body is not limited, and damage to the wire can be minimized during wire transfer. There is a demand for the development of welding machines.

Korean Registered Patent Publication No. 10-1848815 (April 09, 2018) Korean Registered Patent Publication No. 10-1168725 (July 19, 2012) Domestic Registered Utility Model Publication No. 20-0223352 (February 28, 2001)

The present invention has been devised to solve these conventional problems, and apart from the main wire feeder, an extension wire feeder made small and light so that the operator can easily carry it, and a main wire of the MIG welding or CO2 welding system. By installing one or more between the feeder and the welding torch so that the welding operation can be performed, the welding wire can be smoothly transported to a long distance using the extension wire feeder without moving the welding machine body and the main wire feeder, so that welding can be performed easily even at a long distance. In particular, through the expansion of the working radius, improvement of the working environment, and maximization of the convenience of work, the unit cost of the process and wages can be drastically reduced. In addition, through the shortening of the production period, the competitiveness of the product price and quality is greatly improved. Its purpose is to provide an extension wire feeder that can be improved and a welding system including the same.

Other detailed objects of the present invention will be clearly identified and understood by experts or researchers in the art through the specific contents described below.

The extension wire feeder of the present invention for achieving the above object of the present invention, the housing of the cylindrical shape with front and rear openings; a part-fixing body detachably coupled to the front opening of the housing; a motor generating power necessary for supplying a welding wire in a state in which a rotating shaft is installed in the housing so as to be exposed to the outside through the body for fixing the parts; a wire feeding means for feeding the welding wire passing through the main wire feeder to the wire feeding member side while being detachably installed on the support member provided on the front surface of the component fixing body and being rotated by the power of the motor; a wire supply member for supplying the welding wire supplied through the wire feeding means to the welding torch side in a state installed on the rear surface of the body for fixing parts inside the housing; In a state installed on the front surface of the support member, a wire guide that delivers the welding wire supplied through the main wire feeder to the wire feeding means side; characterized in that it is configured to include.

In addition, a socket connection member having two socket couplings for detachably installing a socket for gas and power supply and a socket for connecting cooling water supply and discharge pipe is further installed on the front side of the support member. do.

In addition, the wire feeding means and a driving bevel gear for transmitting the rotational power of the motor to the driven bevel gear in a fixedly installed state on the rotating shaft of the motor; A driven bevel gear that transmits the rotational power of a motor transmitted in a direction converted to 90 degrees through the drive bevel gear at the bottom of the support member in the orthogonal direction to the drive bevel gear and transmits it to the wire transfer roller through the connecting shaft and; A wire transfer roller having a shape coupled to an upper end of the connecting shaft at an upper portion of the support member, rotating together with the driven bevel gear, and providing frictional force for feeding to an outer surface of the welding wire so that the welding wire is transported; Welding corresponding to the rotation of the wire transfer roller in the form of applying a constant pressure to the welding wire guided by the wire transfer roller in a state where the distance between the wire transfer roller is adjustable on one side of the upper surface of the support member It is characterized in that it is configured to include; a wire pressing roller that rotates idle when the wire is fed and helps the feeding of the welding wire.

On the other hand, the welding system including an extension wire feeder for achieving the object of the present invention described above, the welding machine body having a power supply device, a gas supply device and a control device and performing the overall control function of the welding system; a main wire feeder supplying the welding wire wound on the reel to the extension wire feeder side; a gas passage for supplying inert gas to the side of the welding torch; at least one extension wire feeder installed between the main wire feeder and the welding torch and supplying the welding wire supplied through the main wire feeder to the welding torch; It is characterized in that it consists of; a welding torch that generates an arc in response to the output signal of the welding machine body so that the base material is welded by melting the welding wire.

As described above, according to the extension wire feeder and the welding system including the same of the present invention, a small and light extension wire feeder is manufactured so that the operator can easily carry it separately from the main wire feeder, and it is a MIG welding or CO2 welding system. At least one more is installed between the main wire feeder and the welding torch of the welding torch so that the welder body and the main wire feeder can be smoothly transferred to a long distance using the extension wire feeder without moving the welding machine body and the main wire feeder so that the welding wire can be smoothly transported to a long distance. welding, in particular, it is possible to greatly reduce the unit cost of the process and wages through the expansion of the working radius, the improvement of the working environment, and the maximization of the convenience of work. It is a very useful invention that can greatly improve competitiveness.

Other effects of the present invention will be clearly identified and understood by experts or researchers in the art through the specific details described below or during the process of implementing the present invention.

1 is a schematic configuration diagram of a conventional welding system.
Figure 2 is a cross-sectional view of a welding torch in a conventional welding system.
Figure 3 is a schematic perspective view of a state in which the extension wire feeder to which the present invention is applied is applied to a welding system.
Figure 4 is an exploded perspective view of an extension wire feeder to which the present invention is applied.
Figure 5 is a perspective view of the combined state of the extension wire feeder to which the present invention is applied.

Since the present invention can have various changes and various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, it should be understood that this is not intended to limit the present invention to the specific disclosed form, and includes all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprise" or "having" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features or It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

Hereinafter, the operating state according to each configuration, including a preferred embodiment according to the present invention, will be described in detail with reference to the accompanying drawings.

Figure 3 shows a schematic perspective view of a state in which the extension wire feeder to which the present invention is applied is applied to a welding system, Figure 4 is an exploded perspective view of the extension wire feeder to which the present invention is applied, Figure 5 is an extension to which the present invention is applied It shows a perspective view of the combined state of the wire feeder.

According to this, the MIG and CO2 welding system to which the present invention is applied, as shown in FIG. It has a form including the torch 50, and the welding wire 60 can be used only by the main wire feeder 20 by using the extension wire feeder 40 without moving the welding machine body 10 and the main wire feeder 20. It is smoothly transported to a longer distance (eg 8M, 11M) than the original distance (eg 3M) at the time of the application, so that it is possible to easily perform welding for a specific base material using MIG and CO₂ welding systems even at a distance. as a key technical component.

At this time, among the main components of the MIG or CO2 welding system, the welding machine body 10 includes a power supply device, a gas supply device, and a control device not shown, and controls the overall control function of the system required for MIG and CO2 welding. carry out

In addition, the main wire feeder 20 is provided with a reel mounting hole and a wire feeding device, and corresponds to the output signal of the welding machine body 10 in a state installed between the welding machine body 10 and the welding torch 50 It operates, and performs a function of supplying the welding wire 60 wound on the reel to the side of the extension wire feeder 40 to be described later at a predetermined speed.

In addition, the gas cylinder 30 supplies a desired amount of inert gas to the welding torch 50 in response to the output signal of the welding machine body 10 in a state in which inert gas containing CO2 is stored to prevent foreign matter from entering, that is, , It performs the function of protecting the arc and the melting area by supplying an inert gas that blocks air to the welding torch 50 side.

In addition, as shown in FIGS. 4 and 5, the extension wire feeder 40 largely includes a housing 41, a body for fixing parts 42, a motor 43, a support member 44, and a wire feeding means 45. ), has a configuration including a wire supply member 46 and a wire guide (47).

Such an extension wire feeder 40, in a state where at least one or more are installed between the main wire feeder 20 and the welding torch 50, the welding wire 60 supplied through the main wire feeder 20 to the welding torch It performs the function of supplying to the (50) side.

At this time, the number of installation of the extension wire feeder 40 is determined according to the distance between the main wire feeder 20 and the welding torch 50 on which the base material is located, and at least one or 2 to 3 in succession. You can install and use it.

On the other hand, the housing 41 of the components of the extension wire feeder 40 has a cylindrical shape with open front and rear portions, but has a tapered shape with a funnel shape at the rear portion, and performs the case function of the extension wire feeder.

In addition, the component fixing body 42 has a disk-shaped stopper shape, has a shape detachably screwed to the front opening of the housing 41, and performs a function of fixing various components.

In addition, the motor 43 has a form installed in the housing 41, the rotating shaft 411 has a form exposed to the outside through the body 42 for fixing the part, and in the welding machine body 10 It is operated by the supplied power voltage and performs a function of generating power necessary to supply the welding wire 60 supplied through the main wire feeder 20 to the welding torch 50 side.

In addition, the wire feeding means 45 has a configuration including a driving bevel gear 451, a driven bevel gear 452, a connecting shaft 453, a wire transfer roller 454 and a wire pressing roller 455, The welding wire ( 60) to the wire supply member 46.

At this time, the drive bevel gear 451 among the components of the wire feeding means 45 is the motor 43 exposed to the bottom of the support member 44 in a state of passing through the body 42 for fixing the part. It has a form fixedly installed on the axis of rotation of

Such a driving bevel gear 451 performs a function of transmitting the rotational power of the motor 43 to the driven bevel gear 452 coupled with a phase difference of 90 degrees.

In addition, the driven bevel gear 452 has a form meshed with the drive bevel gear 451 in a direction orthogonal to the bottom of the support member 44 .

Such a driven bevel gear 452 transfers the rotational power of the motor 43 transmitted in a direction converted by 90 degrees through the driving bevel gear 451 to the wire transfer roller 454 through the connecting shaft 453. It performs the function of conveying.

In addition, the wire transfer roller 454 has a lower end coupled to the driven bevel gear 452 at the upper part of the support member 44 provided on the front surface of the body 42 for fixing the parts. The connecting shaft It has a form coupled to the upper end of (453).

Such a wire conveying roller 454 is rotated by the power of the motor 43 together with the driven bevel gear 452, and on one outer surface of the welding wire 60 coupled between the wire pressing roller 455 to be described later. It serves to provide frictional force for supply so that the welding wire 60 is transferred to the welding torch 50 side.

In addition, the wire pressure roller 455 corresponds to the distance between the wire transfer roller 454 and the diameter of the welding wire 60 used for welding at one side of the upper surface of the support member 44, that is, the wire pressure roller The distance between the 455 and the wire conveying roller 454 is installed to be adjustable by the roller distance adjustment tool 456.

Corresponding to the diameter of the welding wire 60 used for welding by the roller spacing adjusting device 456, the wire pressing roller 455 whose spacing with the wire conveying roller 454 is adjusted is the wire conveying In response to the rotation of the wire transfer roller 454 in the form of applying a constant pressure to the outer surface of the other side of the welding wire 60 guided by the roller 454, the welding wire 60 is fed to the welding torch 50 side At this time, it automatically idles and performs a function of helping the feeding of the welding wire 60.

In addition, the wire supply member 46 is a welding wire supplied into the housing 41 through the wire supply means 45 in a state installed on the rear surface of the part fixing body 42 inside the housing 41 ( 60) to the welding torch 50 side.

In addition, the wire guide 47 has a function of accurately conveying the welding wire 60 supplied through the main wire feeder 20 to the wire feeding means 45 side in a state installed on the front surface of the support member 44 Do it.

In addition, in the present invention, a socket connection member 48 having two socket couplers 481 and 482 is further installed on the front surface of the support member.

Such a socket connection member 48 is capable of detachably coupling a gas and power supply socket 49a in which a gas supply hose connected to the gas cylinder 30 and a power supply line connected to the welding machine body 10 are detachably coupled. At the same time, the cooling water supply and discharge pipe connection socket 49b installed to prevent the extension wire feeder 40 from overheating through the water cooling method is detachably coupled. carry out

Meanwhile, the welding torch 50 generates an arc in the welding wire 60 supplied through the main wire feeder 20 or the extension wire feeder 40 in response to the output signal of the welding machine body 10 It performs the function of welding the base material by melting the welding wire 60.

At this time, in the welding torch 50, consumable electrodes and a protective gas for preventing the penetration of foreign substances in the air, that is, inert gas are supplied together to block the air to protect the arc and the melting area.

Although the detailed description of the present invention described above has been described with reference to preferred embodiments of the present invention, those skilled in the art or those having ordinary knowledge in the art will find the spirit of the present invention described in the claims to be described later. And it will be understood that the present invention can be variously modified and changed without departing from the technical scope.

10: welding machine body 20: main wire feeder
30: gas cylinder 40: extension wire feeder
41: housing 42: body for fixing parts
43: motor 431: rotation axis
44: support member 45: wire feeding means
451: drive bevel gear 452: driven bevel gear
453: connecting shaft 454: wire transfer roller
455: wire pressure roller 456: roller spacing control
46: wire supply member 47: wire guide
48: socket connecting member 481, 482: socket coupler
49a: socket for gas and power supply
49b: socket for connecting cooling water supply and discharge pipes
50: welding torch 60: welding wire

Claims (6)

a housing having a cylindrical shape with a rear portion tapered in a funnel shape;
a part-fixing body having a disc-shaped stopper shape and detachably coupled to the front opening of the housing;
a motor that generates power required for feeding the welding wire in a state installed in the housing;
Wire feeding means for feeding the welding wire passing through the main wire feeder to the welding torch side while being detachably installed on the support member provided on the front side of the body for fixing the parts and being rotated by the power of the motor;
a wire supply member installed inside the housing and supplying the welding wire supplied through the wire supply means to the welding torch; and
A wire guide installed on the front surface of the support member and delivering the welding wire to the wire feeding means side,
The wire feeding means,
a driving bevel gear that transmits the rotational power of the motor to the driven bevel gear;
A driven bevel gear having a form meshed with the driving bevel gear in a direction perpendicular to the driving bevel gear and transmitting the rotational power of the motor transmitted through the driving bevel gear in a direction converted by 90 degrees to the wire transfer roller;
a connecting shaft having a lower end coupled to the driven bevel gear at an upper portion of the support member provided on the front surface of the part fixing body;
A wire transfer roller having a shape coupled to an upper end of the connecting shaft at an upper portion of the support member, rotating together with the driven bevel gear, and providing frictional force for feeding to an outer surface of the welding wire so that the welding wire is transported;
At one side of the upper surface of the support member, the gap between the wire conveying roller and the roller gap adjusting device has a form in which a constant pressure is applied to the welding wire guided by the wire conveying roller. The wire A wire pressure roller that rotates idle when the welding wire is fed in response to the rotation of the transfer roller and assists in the feeding of the welding wire;
An extension wire feeder comprising a; roller spacing adjuster for adjusting the distance between the wire pressing roller and the wire conveying roller in correspondence with the diameter of the welding wire used for welding.
delete delete The method of claim 1,
A socket connection member having two socket couplers for detachably installing a socket for gas and power supply and a socket for connecting cooling water supply and discharge pipe to the front of the support member; characterized in that further installed extension wire feeder.
delete A welding machine body that performs overall control functions of the welding system;
a main wire feeder supplying the welding wire to the extension wire feeder side;
a gas passage for supplying inert gas to the side of the welding torch;
at least one extension wire feeder installed between the main wire feeder and the welding torch and supplying the welding wire supplied through the main wire feeder to the welding torch; and
A welding torch generating an arc between the welding wire and the base material under the control of the welding machine body so that the base material is welded by melting the wire;
The extension wire feeder,
a housing having a cylindrical shape with a rear portion tapered in a funnel shape;
a part-fixing body having a disc-shaped stopper shape and detachably coupled to the front opening of the housing;
a motor that generates power required for feeding the welding wire in a state installed in the housing;
Wire feeding means for feeding the welding wire passing through the main wire feeder to the welding torch side while being detachably installed on the support member provided on the front side of the body for fixing the parts and being rotated by the power of the motor;
a wire supply member installed inside the housing and supplying the welding wire supplied through the wire supply means to the welding torch; and
A wire guide installed on the front surface of the support member and delivering the welding wire to the wire feeding means side,
The wire feeding means,
a driving bevel gear that transmits the rotational power of the motor to the driven bevel gear;
A driven bevel gear having a form meshed with the driving bevel gear in a direction perpendicular to the driving bevel gear and transmitting the rotational power of the motor transmitted through the driving bevel gear in a direction converted by 90 degrees to the wire transfer roller;
a connecting shaft having a lower end coupled to the driven bevel gear at an upper portion of the support member provided on the front surface of the part fixing body;
A wire transfer roller having a shape coupled to an upper end of the connecting shaft at an upper portion of the support member, rotating together with the driven bevel gear, and providing frictional force for feeding to an outer surface of the welding wire so that the welding wire is transported;
At one side of the upper surface of the support member, the gap between the wire conveying roller and the roller gap adjusting device has a form in which a constant pressure is applied to the welding wire guided by the wire conveying roller. The wire A wire pressure roller that rotates idle when the welding wire is fed in response to the rotation of the transfer roller and assists in the feeding of the welding wire;
A welding system comprising a; roller spacing adjusting tool for adjusting the spacing between the wire pressing roller and the wire feeding roller in correspondence with the diameter of the welding wire used for welding.

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