KR20140088953A - Weaving welding carriage - Google Patents

Abstract

Disclosed is a weaving welding carriage including a cart, a weaving welding module mounted on the cart, and an operation panel. The weaving welding module includes a torch main body; a welding nozzle; a weaving driving unit joined between the torch main body and the welding nozzle; a torch core rod which includes a welding tip on a lower end thereof and is driven by the weaving driving unit to perform a weaving process inside the nozzle. The weaving driving unit drives the torch core rod, rotationally joined to a center shaft, from an upper side of the torch core rod to an eccentric cam to weave the torch core rod.

Description

{WEAVING WELDING CARRIAGE}

The present invention relates to a weaving welding carriage, and more particularly, to a method and apparatus for welding a weaving carriage which can achieve good bead forming and weld speeding of a welded joint through high speed weaving of a reliable welding tip, To a high-speed weaving welding carriage capable of preventing the operation troubles of the weaving driving motor due to radiant heat by cooling the unit using vortex CO ₂ gas, thereby realizing a constant weaving pattern of the welding tip.

As a welding method for joining metal or a welding method for giving a specific property to a metal surface, there is known a method of continuously supplying a welding wire to a welding portion.

CO ₂ Welding CO ₂ The welding part is cut off from the atmosphere by the gas and the welding wire is continuously fed into the welding part.

In addition, welding carriages are used for welding automation in shipyards and the like.

Welding method using welding wire and CO ₂ gas is highly dependent on ensuring weld joint soundness by welding basic parameters (current, voltage, speed), wire feeding hunting due to power instability and appliance noise can occur, The output power of the power source may be unstable.

For these reasons, there are limitations in realizing high-speed welding while obtaining good beads.

Excessive welding currents cause weld failures such as undercut, overlap, and convex beads, and an increase in welding moving speed results in the generation of penetration amounts, undercuts, blow holes, and the like.

Also, the deformation of the thin plate welding may increase due to the limitation of the welding input control factor.

Welding enthalpy The heat control factor includes the welding current, voltage and velocity.

In addition, CO ₂ When the gas is insufficient, it causes a blowhole defect.

In order to solve the above problems, there have been various studies on the welding tip weaving method of the welding carriage.

For example, there has been a method of reciprocally driving a welding tip by worm gear driving. This method uses a worm gear to mechanically weave the torch body mechanically, which causes problems in unstable operation, There is a problem of defective terminal.

As another example, there is a method in which a torch is eccentrically connected with respect to the axis of the upper motor. However, this method is pointed out as a problem of generation of pulsation of welding current due to torch rotation and inconvenience of handling due to excessive weight.

As another example, there is a hinge-type high-speed sliding method, which has a problem of self heat generation of the weaving driving motor and durability deterioration due to radiant heat generated at the time of welding.

As another example, there is a high-speed sliding method using an electromagnet magnet switch. In this method, there is a problem in that the arc and the electromagnet are adjacent to each other and the electromagnet heated by the arc heat The change of the weaving pattern caused by the decrease of the magnetic force is problematic.

The change in the weaving pattern lowers the uniformity of the weld quality.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a high-speed weaving welding module capable of achieving good bead forming and welding speed-up of a welded joint through high-speed welding of a welding tip and a weaving welding carriage including the same.

Another problem to be solved by the present invention is to cool the weaving drive unit used for high speed weaving of the welding tip by using vortex CO ₂ gas to prevent the operation trouble of the weaving driving motor due to the radiant heat, And to provide a weaving welding carriage including the high speed welding welding module.

A weaving welding carriage according to one aspect of the present invention includes a bogie, a weaving welding module mounted on the bogie, and an operation panel, wherein the weaving welding module comprises: a torch body; A welding nozzle; A weaving drive unit coupled between the torch body and the welding nozzle; And a torch core rod having a welding tip at a lower end portion and driven by the weaving driving unit to weave in the welding nozzle, wherein the weaving driving unit includes a torch core rod rotatably connected to a central rotation axis, The upper part of the rod is driven by the eccentric cam to weave.

According to one embodiment, a cam hole is provided in an upper portion of the torch core rod, and the center rotational axis is located below the cam hole, and the height is adjustable. The weaving driving unit includes a weaving driving motor, And an eccentric cam connected to the coaxial shaft, wherein the eccentric cam is arranged to eccentrically rotate in the cam hole,

X = G x Y / (T - Y)

Where Y is the distance between the center axis of rotation and the welding tip of the welding team, X is the width of the weir, G is the distance between the centers of the coaxial and eccentric cams (eccentric distance) )

The weaving width X of the welding tip is determined by the above equation.

According to one embodiment, the torch core rod is provided with guide slots for adjusting the height of the central axis of rotation.

According to one embodiment, the weaving drive unit includes a casing, the casing including a lid extending from an upper portion of the torch core rod and a welding cable, and a load casing portion for cooperating with the cam hole and the eccentric cam, And a motor casing portion that intersects the load casing portion and accommodates the weaving driving motor.

According to one embodiment, the weaving welding carriage is configured to inject CO ₂ gas injected from the torch body by low-temperature CO ₂ gas Separated by a high-temperature CO ₂ gas And a cooling unit for cooling the high-speed weaving drive unit with low-temperature CO ₂ gas.

According to one embodiment, the cooling unit is cooled by low-temperature CO ₂ gas And a vortex generator for separating a high-temperature CO ₂ gas, and extends laterally from the torch body and connected to the vortex generator and the CO ₂ gas that such CO ₂ gas is injected into the vortex generator jet from the torch main pipe, the It comprises a low-temperature CO ₂ gas pipe and the high-temperature CO ₂ gas pipe a high-temperature CO ₂ gas and the low-temperature CO ₂ gas separated by each of the developing vortex within the vortex generator and the drive unit-side weaving exported toward the welding nozzle.

According to one embodiment, the low-temperature CO ₂ gas pipe is connected to a motor casing portion in which the weaving driving motor is accommodated, of the casing of the weaving drive unit, the high-temperature CO ₂ gas pipe is connected to the upper side of the welding nozzle, through the low-temperature CO ₂ gas pipe of the low-temperature CO ₂ gas flowing into the casing is cooled by the weaving driving motor into the welding nozzle is mixed with the high-temperature CO ₂ gas introduced into the welding nozzle.

According to one embodiment, on the inner circumferential surface of the welding nozzle, a projection for generating a vortex with respect to the CO ₂ gas is formed.

According to one embodiment, a portion of the welding torch cable is received long into the hollow interior of the torch body and a liner extending in a linear direction from the welding torch cable is inserted through the rear hole of the rod casing portion through the end of the welding torch body The liner is detachably connected to the upper connection of the torch core rod when the torch body is pushed to a position where it meets the rod casing portion.

According to one embodiment, the upper inner circumferential surface of the welding nozzle is provided with an insulator for insulating the torch core rod from the welding nozzle.

According to another aspect of the present invention, the weaving welding module includes: a torch body; A welding nozzle; A weaving drive unit coupled between the torch body and the welding nozzle; A torch core rod having a welding tip at a lower end portion and driven by the weaving driving unit to weave in the welding nozzle; By the CO ₂ gas injected from the torch body to the vortex phenomenon and the low-temperature CO ₂ gas Separated by a high-temperature CO ₂ gas And a cooling unit for cooling the high-speed weaving drive unit with low-temperature CO ₂ gas. At this time, the cooling unit generates low-temperature CO ₂ gas and And a vortex generator for separating a high-temperature CO ₂ gas, and extends laterally from the torch body and connected to the vortex generator and the CO ₂ gas that such CO ₂ gas is injected into the vortex generator jet from the torch main pipe, the the low-temperature high-temperature CO ₂ gas and the low-temperature CO ₂ gas separated by each of the developing vortex within the vortex generator and the drive unit-side weaving exported toward the welding nozzle CO ₂ gas pipe and the high temperature CO ₂ Gas piping.

According to the present invention, a weaving welding carriage is realized which can achieve good bead forming and welding speed of the welded joint through high speed weaving of the welding tip.

According to the present invention, the welding quality is greatly improved, and the improved welding quality can be minimized within 0.5 mm or less (conformal length) of the upper and lower cores, release of gas in the deposited metal, uniform welding Quality can be obtained.

Further, according to the present invention, it is possible to minimize the welding residual stress according to the heat quantity control, which minimizes the deformation in the thin plate welding.

Further, according to the present invention, the wind resistance characteristic of the shield gas is improved. However, according to the present invention, it is possible to improve the reliability of welding quality without windshield under outdoor work conditions of wind speeds of 4 m / sec or more by improving the wind resistance characteristics, Welding was possible.

In addition, the present invention can improve weldability, stability of output stability, weldability in case of welding wire failure, improve low current arc stability, improve stability of arc start and crater characteristics, Lt; / RTI >

Further, the present invention also contributes to improvement in electron weldability.

1 is a front view showing a high-speed weaving welding carriage according to an embodiment of the present invention,
FIG. 2 is a plan view of a high-speed weaving welding carriage according to an embodiment of the present invention,
3 is a front sectional view showing a high-speed weaving welding module of the high-speed weaving welding carriage shown in Figs. 1 and 2,
Figure 4 is a side cross-sectional view taken along II of Figure 3,
FIGS. 5 and 6 are views for explaining a weaving operation mechanism of the torch core rod and the welding tip provided therein in the high-speed weaving welding module of FIG. 5,
7 is an exploded view for explaining the inline of a high-speed weaving welding carriage and a welding cable according to an embodiment of the present invention,
FIG. 8 is a table and photographs showing conditions and results of actual CO2 welding using a weaving welding carriage according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The following embodiments are provided as examples for allowing a person skilled in the art to sufficiently convey the idea of the present invention.

Therefore, the present invention is not limited to the embodiments described below, but may be embodied in other forms.

In the drawings, the width, length, thickness, and the like of the components may be exaggerated for convenience.

FIG. 1 is a front view showing a high-speed weaving welding carriage according to an embodiment of the present invention, FIG. 2 is a plan view showing a high-speed weaving welding carriage according to an embodiment of the present invention, 4 is a side cross-sectional view taken along II of Fig. 3, and Figs. 5 and 6 are cross sectional views of the torch core rod in the high speed weaving welding carriage of Fig. 5, Fig. 7 is an exploded view for explaining in-line welding of a high-speed weaving welding carriage and a welding cable according to an embodiment of the present invention, and Fig. 7 is an exploded view for explaining in- 8 is a table and a photograph showing conditions and results of actual CO2 welding using the weaving welding carriage according to the present invention.

1 and 2, a high-speed weaving welding carriage according to an embodiment of the present invention includes a high-speed weaving welding module 1, an operation panel 2, and the like.

The high speed weaving welding carriage also includes a bogie 3 on which components such as the high speed weaving welding module 1 and the operation panel 2 are mounted.

The bogie 3 includes traveling wheels 3a driven by a traveling motor and is capable of moving the high speed weaving welding carriage by moving the bogie 3 by travel of the traveling wheel 3a.

The high speed weaving welding module 1 is inline with the cable to which the welding wire is fed and is inlaid with a torch body 10, a high speed weaving drive unit 20, a torch core rod 30 6) and a welding nozzle 40 are assembled and assembled.

3 to 6, the high-speed weaving welding module 1 includes a structure in which a high-speed weaving drive unit 20 is coupled between the torch body 10 and the hollow welding nozzle 40.

The fast weaving welding module 1 further includes a torch core rod 30 having a welding tip 31 at its end and the torch core rod 30 is accommodated in the hollow of the welding nozzle 40, And extends to the inside of the casing 21 of the high-speed weaving drive unit 20 coupled to the upper portion of the welding nozzle 40. [

It is preferable that the distal end of the torch core rod 30, more specifically, the distal end of the welding tip 31 and the distal end of the welding nozzle 40 are located on substantially the same level.

An approximately elliptical cam hole (39) is provided on the torch core rod (30).

Further, the torch core rod 30 is rotatably connected to the central rotation axis 38 at an intermediate portion, which is a predetermined distance from the cam hole 39.

The height of the central rotation axis 38 can be adjusted as described below, and the distance from the cam hole 39 can be changed by adjusting the height.

A circular eccentric cam (29) is connected to the driving shaft (28) of the high speed weaving drive unit (20).

The eccentric cam 29 is eccentrically rotated in the cam hole 39. The eccentric rotational movement is performed by moving the center of the eccentric cam 29 and the center of the driving shaft 28 by a predetermined distance 0.0 > mm). ≪ / RTI >

The eccentric cam (29) eccentrically rotates along the cam surface of the cam hole (39).

The eccentric cam 29 rotates eccentrically so that the torch core rod 30 and the welding tip 31 provided at the end of the torch core rod 30 are weaving at a constant amplitude within the hollow of the welding nozzle 40 .

A welding cable 40 and a welding nozzle 40 are fixed and a 30 Hz high speed weaving is achieved, for example, by weaving of the welding tip 31 inside the welding nozzle 40.

The welding tip 31 is weaved with respect to a vertical central axis passing through the centers of the central rotation axis 38 and the driving axis 28. At this time, the weaving width X is expressed by the following formula (1) (See Fig. 5 (b)).

X = G x Y / (T - Y) ... (1)

Where Y is the distance between the center axis of rotation and the welding tip of the welding team, X is the width of the weir, G is the distance between the centers of the coaxial and eccentric cams (eccentric distance) )

5 (a) and 5 (b), the eccentric distance G between the center of the driving shaft 28 and the eccentric cam 29 and the center of the driving shaft 28 from the welding tip 31 is fixed and the distance Y between the center rotary shaft 38 and the end of the welding tip 31 is variable.

By the variable, the weaving width X of the welding tip 31 and the corresponding weaving angle can be adjusted. By this adjustment, the optimum amplitude condition of the weaving of the welding tip 31 can be set, Conditions can be implemented.

Under the condition that the distance T between the distal end of the welding tip 31 from the center of the driving shaft 28 is fixed to 175 mm and the eccentric distance G is fixed to 0.3 mm according to an embodiment of the present invention, The weaving width X can be adjusted according to the following equation (2) by adjusting the height of the center rotational axis 38, that is, the distance Y between the center rotational axis 38 and the end of the welding tip 31, Thereby, the best welding conditions can be realized.

It is to be understood that the end of the welding tip 31 and the end of the torch core rod 30 are the same.

X = 0.3 x Y / (175 - Y) (2)

A guide slot 37 for controlling the height of the central rotary shaft 38 is formed in the longitudinal direction below the cam hole 39 of the torch core rod 30 to adjust the height of the central rotary shaft 38.

The torch core rod 30 is provided with a means for fixing the central rotary shaft 38 whose height is changed along the guide slot 37, for example, in a fastening manner.

Referring again to FIGS. 3-6, the high-speed weaving drive unit 20 includes a substantially "T" shaped casing 21.

The casing 21 includes a load casing portion 212 receiving the upper portion of the torch core rod 30 and the liner and cooperating with the cam hole 39 and the eccentric cam 29 accommodated therein, And a motor casing portion 214 crossing the rod casing portion 212 at substantially right angles.

The high speed weaving driving unit 20 includes a weaving driving motor 22 accommodated in the motor casing unit 214, a driving shaft 28 which is a rotating shaft of the weaving driving motor 22, And a circular eccentric cam 29 eccentrically connected to the driving shaft 28 at an end of the eccentric cam 29.

When the driving shaft 22 is driven to rotate the driving shaft 28, the driving shaft 28 eccentrically rotates the eccentric cam 29 positioned in the cam hole 39 and the eccentric cam 29 The torch core rod 30 pivots about a central rotational axis within a predetermined angle range and the welding tip 31 at the end of the torch core rod 30 is rotated by the eccentric rotation of the central axis of rotation 38), and the welding is performed on the base material at high speed weaving with a specific amplitude and with a predetermined weaving width (or weaving angle).

3, the high-speed weaving welding module 1 according to an embodiment of the present invention is configured such that the CO ₂ gas injected in the lateral direction in the hollow torch body 10 is injected into the low-temperature CO ₂ gas Wow Separated by a high-temperature CO ₂ gas And a cooling unit (50) for cooling the high-speed weaving drive unit (20) with low-temperature CO ₂ gas.

The cooling unit 50 is cooled by low-temperature CO ₂ gas And the non-powered vortex generator (51) for separating a high-temperature CO ₂ gas, and extends laterally from the hollow torch body 10 is coupled to the vortex generator 51 CO ₂ gas from the Soil body 10 is the vortex generator so that CO ₂ gas injection jet in 1.5Bar ~ 2.5 Bar within 51 pipe 52, the vortex generator 51 is separated hot by the developer within the vortex CO ₂ gas and the low-temperature CO ₂ gas respectively, And a low-temperature CO ₂ gas pipe 53 and a high-temperature CO ₂ gas pipe 54 for discharging to the side of the weaving drive unit 20 and the welding nozzle 40.

The low-temperature CO ₂ gas pipe 53 is connected to the motor casing portion 214 in which the weaving driving motor 22 is accommodated.

Low temperature CO ₂ The gas flows into the motor casing 214 and flows to the welding nozzle 40 through the vertical rod casing part 212 connected to the motor casing part 214 after cooling the weaving driving motor 22.

Since the low temperature CO ₂ gas cools the weaving drive motor 22, the electromagnet magnetic force of the weaving drive motor 22 is prevented from being lowered by the generated heat of the weaving drive motor 22 itself and the radiant heat during welding.

Electromagnet magnetic degradation of the weaving driving motor 22 in that it consequently change the weaving pattern of the welding tip 31, the low-temperature CO ₂ Cooling of the weaving drive motor 22 with gas ensures uniformity of the welding tip 31 weaving pattern.

The high temperature CO ₂ gas pipe 54 is connected to the upper side of the welding nozzle 40 or the connecting portion of the welding nozzle 40 and the rod casing portion 212.

High temperature CO ₂ The gas is passed through the weaving drive motor 22 to low-temperature CO ₂ Gas and the welding nozzle (40).

Mixed CO ₂ Gas is injected through the lower end of the welding nozzle 40 and acts as a shield gas separating the atmosphere from the welding part.

An annular protrusion 42 for generating a vortex is formed on the inner surface of the welding nozzle 40. The protrusion 42 generates a vortex so that high temperature CO ₂ Gas welding with the low temperature CO ₂ gas to improve the weldability by increasing the CO ₂ gas shielding effect during welding and welding spatters to the inner surface of the welding nozzle 40 and the welding tip 31 Thereby helping to prolong the life of these parts and their associated parts.

In addition, by the vortex generation, CO ₂ The flow rate of the gas is increased, and the increase of the flow rate increases the wind pressure resistance in the CO ₂ shield gas.

In the conventional case, CO ₂ Although the shield gas lost the role of protective gas at a wind velocity of 2 m / s or more, in this embodiment, CO ₂ The shield gas was able to act as a protective gas even at 4m / sec wind speed.

In this embodiment, one or more annular protrusions 42 formed by press-fitting are used, but a spiral protrusion or a plurality of annular protrusions may be used. In terms of vortex generation effects, the use of spiral protrusions was relatively more effective.

The high temperature CO ₂ gas pipe 54 is preferably provided with a throttle valve 542 for controlling the amount of high temperature CO ₂ gas entering the welding nozzle 40.

The throttle valve 542 allows the high temperature CO ₂ Gas and low temperature CO ₂ The mixing ratio of gas and thus CO ₂ The gas temperature can be adjusted.

An insulator 44 is provided on the upper inner circumferential surface of the welding nozzle 40. The insulator 44 electrically insulates the torch core rod 30 from the welding nozzle 40 by weaving.

The lower part of the torch core rod 30 is a welding tip 31 as described in detail above and the lower connecting part 33 of the torch core rod 30 can adopt the gas diffuser as it is conventionally used .

The upper connecting portion 34 of the torch core rod 30 is a portion provided with the central rotation shaft 38 and the cam hole 39 and is accommodated in the rod casing portion 212 of the weaving driving unit 20 And is detachably connected to the lower connection portion 33.

Referring to FIG. 8, the high speed weaving welding module of the high speed weaving welding carriage shows a state in which the welding cable is in line.

8, a portion of the welding torch cable 11 is elongated in the hollow interior of the welding torch body 10 and a liner 12 extending in a linear direction from the welding torch cable 11 is welded to the welding torch body 11 10 through the rear hole of the rod casing portion 212 of the weaving drive unit 20. [

When the welding torch body 10 is pushed to a position where it meets the rod casing portion 212, the liner 12 is detachably connected to the upper connecting portion of the torch core rod 30, , And furthermore, the high speed weaving welding carriage is inline with the welding torch cable.

With this configuration, it is possible to design various welding consumables including the existing welding torch cable and the torch main body, and it is possible to improve the assemblability by the attaching / detaching method, and to be compatible .

Meanwhile, the welding nozzle 40 and the insulator 44 are detachably coupled to the rod casing portion 212, and the welding tip 31 is detachably coupled to the lower connection portion 33, which may be a gas diffuser component And the lower connection portion 33 to which the welding tip 31 is coupled is detachably coupled to the upper connection portion inside the rod casing portion 212.

As mentioned above, each of the welding tip, the lower connection and the upper connection is partly incorporated into the torch core rod.

FIG. 8 is a table and photographs showing conditions and results of actual CO2 welding using a weaving welding carriage according to the present invention.

1: Weaving welding module 10: Torch body
20: weaving drive unit 30: torch core rod
31: welding tip 40: welding nozzle

Claims (12)

A weaving welding carriage including a weighing module, a weighing module, and an operation panel mounted on the weighing platform,
Torch body;
Welding nozzle;
A weaving drive unit coupled between the torch body and the welding nozzle;
And a torch core rod having a welding tip at a lower end portion and driven by the weaving driving unit to weave in the welding nozzle,
Wherein the weaving drive unit drives a torch core rod rotatably connected to a central rotation shaft by an eccentric cam at an upper portion of the torch core rod to be weaved. The weighing drive unit according to claim 1, wherein a cam hole is provided on an upper portion of the torch core rod, the center rotation axis is located below the cam hole and the height is adjustable, And an eccentric cam connected to the eccentric cam, wherein the eccentric cam is arranged to eccentrically rotate in the cam hole,
X = G x Y / (T - Y)
Where Y is the distance between the center axis of rotation and the welding tip of the welding team, X is the width of the weir, G is the distance between the centers of the coaxial and eccentric cams (eccentric distance) )
Wherein the weaving width (X) of the welding tip is determined by the above formula. The weaving carriage of claim 2, wherein the torch core rod is provided with a guide slot for adjusting the height of the central axis of rotation. 3. The apparatus of claim 2, wherein the weaving drive unit includes a casing, the casing including: a load casing portion for accommodating a liner extending from the welding cable at an upper portion of the torch core rod and cooperating with the cam hole and the eccentric cam; And a motor casing part intersecting with the rod casing part and accommodating the weaving driving motor. [3] The method of claim 2, wherein the CO ₂ gas injected from the torch main body is reduced by low-temperature CO ₂ gas Separated by a high-temperature CO ₂ gas Further comprising a cooling unit for cooling the high-speed weaving drive unit with low-temperature CO ₂ gas. The method according to claim 5, wherein the cooling unit is the low-temperature CO ₂ by the eddy current phenomenon Gas and And a vortex generator for separating a high-temperature CO ₂ gas, and extends laterally from the torch body and connected to the vortex generator and the CO ₂ gas that such CO ₂ gas is injected into the vortex generator jet from the torch main pipe, the weaving, comprising the low-temperature CO ₂ gas pipe and the high-temperature CO ₂ gas pipe to the high-temperature CO ₂ gas and the low-temperature CO ₂ gas, each separated by the inner vortex phenomenon vortex generator and the weaving drive unit side exported toward the welding nozzle Welding carriage. [7] The apparatus according to claim 6, wherein the low-temperature CO ₂ gas pipe is connected to a motor casing portion in which the weaving driving motor is accommodated, of the casing of the weaving driving unit, the high- temperature CO ₂ gas pipe is connected to the upper side of the welding nozzle, through a low-temperature CO ₂ gas pipe of the low-temperature CO ₂ gas flowing into the casing, the weaving welding, characterized in that after cooling the weaving driving motor enters the welding nozzle mixed with the high-temperature CO ₂ gas introduced into the welding nozzle Carriage. The weaving carriage according to claim 7, wherein protrusions are formed on the inner circumferential surface of the welding nozzle to generate a vortex with respect to CO ₂ gas. 5. The welding torch according to claim 4, wherein a portion of the welding torch cable is longly received into the hollow interior of the torch body, and a liner extending in a linear direction from the welding torch cable is inserted through the rear hole of the rod casing portion through the end of the welding torch body Wherein the liner is detachably connected to the upper connection of the torch core rod when the torch body is pushed to a location where it contacts the load casing portion. The weaving carriage of claim 1, wherein an insulator is provided on an upper inner circumferential surface of the welding nozzle to insulate the torch core rod from the welding nozzle. A weaving welding carriage including a weighing module, a weighing module, and an operation panel mounted on the weighing platform,
Torch body;
Welding nozzle;
A weaving drive unit coupled between the torch body and the welding nozzle;
A torch core rod having a welding tip at a lower end portion and driven by the weaving drive unit to weave in the welding nozzle; And
By the CO ₂ gas injected from the torch body to the vortex phenomenon and the low-temperature CO ₂ gas Separated by a high-temperature CO ₂ gas And a cooling unit for cooling the high-speed weaving drive unit with low-temperature CO ₂ gas. 12. The method of claim 11, wherein the cooling unit is cooled by low-temperature CO ₂ gas And a vortex generator for separating a high-temperature CO ₂ gas, and extends laterally from the torch body and connected to the vortex generator and the CO ₂ gas that such CO ₂ gas is injected into the vortex generator jet from the torch main pipe, the weaving, comprising the low-temperature CO ₂ gas pipe and the high-temperature CO ₂ gas pipe to the high-temperature CO ₂ gas and the low-temperature CO ₂ gas, each separated by the inner vortex phenomenon vortex generator and the weaving drive unit side exported toward the welding nozzle Welding carriage.

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