KR102060417B1 - Multi welding equipment - Google Patents

Abstract

The present invention provides a multi-welding apparatus which is easily installed and moved. The multi-welding apparatus comprises: a main body; a first filter unit to remove a noise signal from an alternating current inputted from the outside; a first input rectifying unit to rectify an alternating current into a direct current; a first flattening unit to remove ripples from a direct current; a first inverter unit to convert a direct current into an alternating current; a first output rectifying unit to rectify an alternating current outputted by the first inverter unit into a direct current to be outputted through a first welding means and a first ground unit; a first driving unit to control supply of a welding wire, control a direct current value outputted to the first welding means through the first output rectifying unit, and control whether to output a direct current to the first welding means through the first output rectifying unit in accordance with the temperature of the first welding means; a second filter unit to remove a noise signal from an alternating current inputted from the outside; a second input rectifying unit to rectify an alternating current into a direct current; a second flattening unit to remove ripples from a direct current; a second inverter unit to convert a direct current into an alternating current; a second output rectifying unit to rectify an alternating current outputted by the second inverter unit into a direct current to be outputted through a second welding means and a second ground unit; a second driving unit to control an operation of the second welding means, control whether to supply welding gas, control a direct current value outputted to the second welding means through the second output rectifying unit, control whether to output a direct current through the second output rectifying unit by temperature measurement, and prevent generation of a high frequency to the second welding means; and a third driving unit to control a direct current value outputted to the second welding means.

Description

Multi welding equipment

The present invention relates to a multi-welding apparatus which makes it possible to selectively use arc welding, TIG welding and MIG welding.

In general, in the case of large steel structures, various materials such as stainless steel, aluminum, etc. are used in addition to general carbon steel.

In addition, due to the complexity of the structure, various welding techniques are applied to a structure, and a welder for performing the same is also diverse, such as a coated arc welder, a MAG welder, a TIG welder, and a MIG welder.

As a result, the production of a structure is complicated by the mobilization and movement of various welding machines, and the difficulty of storing each welding machine and the arrangement of many welding machines and related cables and equipment in the workplace. There is a safety risk.

Such a conventional welding machine is disclosed in Korean Patent Laid-Open Publication No. 2008-0001303 (2008.05.26) and Korean Utility Model Registration No. 00403989 (2005.12.09).

An object of the present invention is to provide a multi welding apparatus that can perform arc welding, TIG welding, and MIG welding with a single device, and is easy to install and move.

The present invention relates to a main body having a box structure divided into a first installation space portion and a second installation space portion, a first filter unit disposed in the first installation space portion and removing noise signals from an AC current input from the outside. A first input rectifying unit connected to the first filter unit in a state of being disposed in the first installation space and rectifying an alternating current output from the first filter unit into a direct current, and in a state of being disposed in the first installation space A first smoothing unit which connects to a first input rectifying unit, removes ripple from a DC current output from the first input rectifying unit, and is connected to a first smoothing unit in a state of being disposed in the first installation space; A first inverter unit for converting a DC current output from the smoothing unit into an alternating current, connected to the first inverter unit in a state arranged in the first installation space, the AC current output from the first inverter unit is the first welding Through the means and the first ground A first output rectifying unit rectifying with a direct current so as to be output, and connected between the first smoothing unit and the first inverter unit in a state of being disposed in the first installation space part, supply control of the welding wire, and a first output rectifying unit A first driving unit controlling the direct current value output to the first welding means through the first welding means, and controlling the output of the direct current to the first welding means through the first output rectifying unit according to the temperature of the first welding means; A second filter unit which is disposed in the second installation space and removes a noise signal from an AC current input from the outside, and is connected to the second filter unit in a state where the second signal is disposed in the second installation space, A second input rectifying unit for rectifying the output AC current to a DC current, connected to the second input rectifying unit in a state arranged in the second installation space, and removes ripple from the DC current output from the second input rectifying unit The second flat to say A second inverter unit connected to the second smoothing unit in a state in which the bow unit is disposed in the second installation space and converting a direct current output from the second smoothing unit into an alternating current; A second output rectifying unit connected to the second inverter unit in one state, and rectifying with a DC current such that an AC current output from the second inverter unit is output through the second welding means and the second ground portion, and the second installation space portion A DC current connected between the second smoothing unit and the second inverter unit in a state of being disposed in the state, and controlling the operation of the second welding means and controlling the supply of the welding gas, and the DC current output through the second output rectifying unit to the second welding means. The second drive unit for controlling the output of the DC current through the second output rectifying unit through the value control, the temperature measurement, and the high frequency to the second welding means, the second installation unit 2nd drive unit to 2 smoothing unit And parallel to be connected, there is provided a multi-welding device and a third driving unit for controlling the direct current value to be outputted to the second welding means.

In addition, the main body is provided with a welding wire supply unit for automatically supplying the welding wire to the first welding means, the first drive unit, when the temperature rises above the set range while sensing the temperature of the first welding means; A first temperature sensor for interrupting supply of current to the first welding means, a signal plug for controlling feeding and feeding speeds of the welding wires connected to the welding wire feeding unit and supplied to the first welding means, and the first output rectification Connected to the unit, connected to the first current control unit, the first driving unit to adjust the DC current value output through the first output rectifying unit by the DC current value set by the user, it is possible to set the current value by the user The control unit may include a first control unit including a button for allowing a user to visually recognize a current value set by a user.

In addition, the main body is provided with a gas storage tank in which the regulator is provided in a seated state, connected to the first inverter unit, and further supplies an external power supply unit for supplying power to the heater for heating the regulator to prevent the temperature drop of the regulator. It can be provided.

In addition, the second driving unit, the second temperature sensor for blocking the supply of current to the second welding means when the temperature rises above the set range while sensing the temperature of the second welding means, the operation of the second welding means A torch valve for controlling the gas supply and the gas supply amount, a gas valve for controlling the supply of gas to the second welding means, and a second output rectifying unit connected to the second output rectifying unit to a DC current value set by a user. It may include a second current control unit to adjust the DC current value output through.

In addition, the first welding means connected to the first output rectifying unit is a mig gun, the second welding means connected to the second output rectifying unit is composed of a tag torch and an arc torch, the tag torch and the arc torch is a second Can be connected electrically parallel to the output rectifier unit.

In addition, the button is connected to the second drive unit and the third drive unit in a state arranged outside the main body, the button to enable the current value set by the user according to the use of the TG welding and arc welding of the second welding means and The display device may further include a second control unit configured as a display unit to visually recognize the current value set by the user.

The multi welding apparatus according to the present invention includes a first filter unit, a first input rectifying unit, a first smoothing unit, a first inverter unit, a first output rectifying unit, and a first driving unit in a first installation space of a main body. The second mounting space includes a second filter unit, a second input rectifying unit, a second smoothing unit, a second inverter unit, a second output rectifying unit, a second driving unit, and a third driving unit. The MIG welding through the welding means and the TIG welding and the arc welding through the second welding means can both be performed, it can take up less installation space and facilitate the mobile installation.

1 is a schematic block diagram of a multi-welding apparatus according to an embodiment of the present invention.

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

1 is a schematic block diagram of a multi-welding apparatus according to an embodiment of the present invention. Referring to FIG. 1, in one embodiment, a multi welding apparatus includes a main body 100, a first filter unit 110, a first input rectifying unit 120, a first smoothing unit 130, and a first inverter unit 140. ), The first output rectifying unit 150, the first driving unit 160, the second filter unit 210, the second input rectifying unit 220, the second smoothing unit 230, the second inverter unit 240 ), A second output rectifying unit 250, a second driving unit 260, and a third driving unit 270.

The main body 100 includes a first filter unit 110, a first input rectifying unit 120, a first smoothing unit 130, a first inverter unit 140, and a first output rectifying which will be described later. The unit 150, the first driving unit 160, the second filter unit 210, the second input rectifying unit 220, the second smoothing unit 230, and the second inverter unit 240. And a case portion of a box structure that provides a space for installing the second output rectifying unit 250, the second driving unit 260, and the third driving unit 270 in a protected state. Here, the lower end of the main body 100 may be provided with a plurality of moving wheels (not shown) to facilitate the movement.

The main body 100 may be formed in a box structure having a hexahedron shape, and an inner side thereof may be partitioned into a first installation space 101 and a second installation space 102 by a partition wall portion 100a. . Here, the first installation space 101, the first filter unit 110, the first input rectifying unit 120, the first smoothing unit 130, the first inverter unit 140, the first The output rectifying unit 150 and the first driving unit 160 may be installed to be inserted into the arrangement. In the second installation space 102, a second filter unit 210, a second input rectifying unit 220, a second smoothing unit 230, a second inverter unit 240, and a second The output rectifying unit 250, the second driving unit 260, and the third driving unit 270 may be installed to be inserted into the arrangement. In addition, the main body 100 is provided with a cooling fan (not shown), respectively, so that the cooling of the first installation space 101 and the second installation space 102 may be performed in the first installation space 101 and It may be provided to be connected to the second installation space (102). At this time, the first filter unit 110, the first input rectifying unit 120, the first smoothing unit 130, the first inverter unit 140, the first output rectifying unit 150, The first driving unit 160 may be installed in the first installation space 101 in a state in which the first driving unit 160 is electrically connected to one circuit board. In addition, the second filter unit 210, the second input rectifying unit 220, the second smoothing unit 230, the second inverter unit 240, the second output rectifying unit 250, The second driving unit 260 and the third driving unit 270 may also be installed in the second installation space 102 in a state configured to be electrically connected to one circuit board.

In addition, the main body 100 may be provided with a gas storage tank 103 for storing the gas used in the welding operation. In addition, the gas storage tank 103 is provided with a regulator 104 for controlling a gas supply to the first welding means 151 and the second welding means 251, and the regulator 104 has a first inverter unit 140. The heater 105 may be provided to connect the heater 105 to generate a stable gas supply while preventing the temperature drop of the regulator 104 while receiving current from the heat generator.

In addition, the main body 100 may be provided with a welding wire supply unit 108 for automatically supplying the welding wire in the welding operation through the first welding means 151.

In addition, the main body 100 has a first circuit breaker 105 for blocking the AC current input from the outside before passing to the first filter unit 110, and the second filter unit 210 for the AC current input from the outside. It may be provided with a second circuit breaker 106 for blocking before delivery to. In addition, the main body 100 may be provided with a power switch unit 107 that allows the user to control the AC current input to the first circuit breaker 105 and the second circuit breaker 106 from the outside.

The first filter unit 110 receives an alternating current input from the outside while passing through the first circuit breaker 105 to remove a noise signal, and then transfers the noise signal to the first input rectifying unit 120. The first filter unit 110 is installed in the first installation space 101 to be electrically connected between the first circuit breaker 105 and the first input rectifying unit 120.

The first input rectifying unit 120 rectifies an AC current output from the first filter unit 110 to a DC current. Here, the first input rectifying unit 120 may be composed of a three-phase bridge diode. The first input rectifying unit 120 is installed in the first installation space 101 to be electrically connected between the first filter unit 110 and the first smoothing unit 130.

The first smoothing unit 130 removes ripple from the DC current output from the first input rectifying unit 120. That is, the first smoothing unit 130 allows the DC current output from the first input rectifying unit 120 to be output as a stable arc with a wide band of low current to high current. Here, the first smoothing unit 130 may be composed of an electrolytic capacitor. The first smoothing unit 130 is installed in the first installation space 101 to be electrically connected between the first input rectifying unit 120 and the first inverter unit 140.

The first inverter unit 140 converts the DC current output from the first smoothing unit 130 into an AC current. That is, the first inverter unit 140 converts the output electricity of the low voltage high current output from the first smoothing unit 130 into pulse waves of alternating current. Here, the first inverter unit 140 may be composed of an IGBT and a transformer. The first inverter unit 140 is installed in the first installation space 101 to be electrically connected between the first smoothing unit 130 and the first output rectifying unit 150.

In addition, the first inverter unit 140 may be provided with an external power supply unit 141 connected to the heater 105 for heating the regulator 104.

The first output rectifying unit 150 rectifies the AC current output from the first inverter unit 140 into a DC current. The DC current rectified in the first output rectifying unit 150 is output through the first welding means 151 and the first grounding part 152 to perform a welding operation. In this case, the first welding means 151 may be a miggan. Here, the first output rectifying unit 150 is installed so as to be electrically connected to the first inverter unit 140 in a state arranged in the first installation space 101.

The first driving unit 160 controls the feeding of the welding wire through the welding wire feeding unit 108, and the DC current value control output to the first welding means 151 through the first output rectifying unit 150 and The DC current output to the first welding means 151 through the first output rectifying unit 150 is controlled by measuring the temperature of the first welding means 151. The first driving unit 160 is installed to be electrically connected between the first smoothing unit 130 and the first inverter unit 140 while being disposed in the first installation space 101. Here, the first driving unit 160 includes a first temperature sensor 161, a signal plug 162, a first current control unit 163, and a first control unit 164.

The first temperature sensor 161 detects a temperature of the first welding means 151 and blocks the supply of current to the first welding means 151 when the temperature rises above a set range, thereby preventing a failure due to an overload. To prevent it.

The signal plug 162 is connected to the welding wire supply unit 108 to control the supply and supply speed of the welding wire supplied to the first welding means 151.

The first current control unit 163 is connected to the first output rectifying unit 150, the first output rectifying unit 150 to a DC current value set by the user to the first control unit 164 to be described later Through the first welding means 151 and the first ground portion 152 outputs a DC current value.

In addition, a first control unit 164 may be connected to the first driving unit 160. The first control unit 164 is connected to the first driving unit 140 in a state arranged outside the main body 100 to enable the operation by the user, a button that enables the user to set the current value (Fig. And a display unit (not shown) for visually recognizing a current value set by a user.

The second filter unit 210 receives the AC current input from the outside while passing through the second circuit breaker 106 to remove the noise signal, and then transfers the noise signal to the second input rectifying unit 220. The second filter unit 210 is installed to be electrically connected between the second circuit breaker 106 and the second input rectifying unit 220 in a state of being disposed in the second installation space 102.

The second input rectifying unit 220 rectifies the DC current from the AC current output from the second filter unit 210. Here, the second input rectifying unit 220 may be composed of a three-phase bridge diode. The second input rectifying unit 220 is installed in the second installation space 102 to be electrically connected between the second filter unit 210 and the second smoothing unit 230.

The second smoothing unit 230 removes ripple from the DC current output from the second input rectifying unit 220. That is, the second smoothing unit 230 causes the DC current output from the second input rectifying unit 220 to be output as a stable arc with a wide band of low current to high current. Here, the second smoothing unit 230 may be composed of an electrolytic capacitor. The second smoothing unit 230 is installed in the second installation space 102 to be electrically connected between the second input rectifying unit 220 and the second inverter unit 240.

The second inverter unit 240 converts the DC current output from the second smoothing unit 230 into an AC current. That is, the second inverter unit 240 causes the output voltage of the low voltage high current output from the second smoothing unit 230 to be converted into pulse waves of alternating current. Here, the second inverter unit 240 may be composed of an IGBT and a transformer. The second inverter unit 240 is installed to be electrically connected between the second smoothing unit 230 and the second output rectifying unit 250 while being disposed in the second installation space 102.

The second output rectifying unit 250 rectifies the AC current output from the second inverter unit 240 into a DC current. The DC current rectified in the second output rectifying unit 250 is output through the second welding means 251 and the second grounding part 252 to perform a welding operation. At this time, the second welding means 251 may be composed of a tag torch and an arc torch, and the tag torch and the arc torch may be electrically connected to the second output rectifying unit 250 to be used. Here, the second output rectifying unit 250 is installed to be electrically connected to the second inverter unit 240 in a state arranged in the second installation space (102).

The second driving unit 260 controls the operation of the second welding means 251, the control of the supply of welding gas from the gas storage tank 103 to the second welding means 251, and the second welding means 251. Control of the direct current output to the second welding means 251 through the second output rectifying unit 150 and the second welding means while preventing the occurrence of high frequency to the second welding means 251 through the temperature measurement of 251 to control the output state of the DC current supplied to enable a stable welding operation when applying the TIG torch. The second driving unit 260 is installed to be electrically connected between the second smoothing unit 230 and the second inverter unit 240 while being disposed in the second installation space 102. Here, the second driving unit 260 has a circuit board structure having a structure for preventing high frequency, while the second temperature sensor 261, the torch valve 262, the gas valve 263, and the second current control unit ( 264).

The second temperature sensor 261 detects the temperature of the second welding means 251 and blocks the supply of current to the second welding means 251 when the temperature rises above the set range, thereby preventing a failure due to overload. To prevent it.

The torch valve 262 is connected to the second welding means 251 to control the operation of the second welding means 251 and the second welding means of the welding gas discharged from the gas storage tank 103 ( 251 control the amount of supply.

The gas valve 263 is connected to the gas storage tank 103 to control whether or not the welding gas is supplied from the gas storage tank 103 to the second welding means 251. That is, the gas valve 263 can control the gas supply or supply cutoff to the second welding means 251 of the welding gas stored in the gas storage tank 103.

The second current adjusting unit 264 is connected to the second output rectifying unit 250 to adjust the DC current value output through the second output rectifying unit 250 to the DC current value set by the user. The second current adjusting unit 264 may visually recognize at least one button (not shown) and the adjusted current value to enable the current value adjustment by the user in a state disposed outside the main body 100. It may be configured as a display unit (not shown).

The third driving unit 270 controls the DC current value output to the second welding means 251. That is, when the third driving unit 270 selects and uses the arc torch as the second welding means 251, the third driving unit 270 receives a DC input to the second welding means 251 with respect to a DC current value output through the output rectifying unit 250. Allows you to control the current value. The third driving unit 270 is connected to the second smoothing unit 230 in parallel with the second driving unit 260 while being disposed in the second installation space 102. Here, the control of the DC current value to the second welding means 251 through the third driving unit 270 can be adjusted by the user through a button provided in the main body 100, in this case, the third driving unit ( 270 has a movable coil structure to adjust the welding current input to the second welding means 251 by adding or reducing the leakage reactance.

In addition, a second control unit 280 may be connected to the second driving unit 260 and the third driving unit 270. The second control unit 280 is connected to the second driving unit 260 and the third driving unit 270 in a state of being disposed outside the main body 100 so as to be operated by a user. A button (not shown) that enables the user to set the current value according to the use of the TIG welding and the arc welding selection of 251, and a display unit (not shown) to visually recognize the current value set by the user It can be composed of).

In addition, the main body 100 may be provided with a cooling device (not shown) for circulating the coolant to the TIG torch when the TIG torch is used as the second welding means 251.

Referring to the operation of the multi-welding apparatus according to an embodiment configured as described above are as follows.

First, the mig gun is used as the first welding means 151 at the time of mig welding, and the AC current supplied from the outside is removed from the first circuit breaker 105 via the first filter unit 110 to remove the noise signal. After rectifying the DC current from the first input rectifying unit 120, the ripple is removed from the first smoothing unit 130. Subsequently, after the first inverter unit 140 is converted into an alternating current, the welding operation can be performed while supplying current from the first output rectifying unit 150 to the first welding means 151.

Here, the first driving unit 160 is a welding wire to the first welding means 151 through the welding wire supply unit 108 while adjusting the current value during the welding operation through the first welding means 151. Allow automatic feeding. In addition, after sensing the temperature of the first welding means 151, when the first welding means 151 exceeds the set temperature, the current supply to the first welding means 151 is cut off.

In the case of the TIG welding, the TIG torch is used as the second welding means (-, 251), and the AC current supplied from the outside is removed from the second breaker 106 through the second filter unit 210 to remove the noise signal. After rectifying the DC current from the second input rectifying unit 220 in the state, the ripple is removed from the second smoothing unit 230. Subsequently, after the second inverter unit 240 is converted into an alternating current, the welding operation can be performed while supplying current from the second output rectifying unit 250 to the second welding means (-, 251).

Here, the second driving unit 260 is a second welding means (-, 251) to control the current value during the welding operation through the torch torch, and to control the operation of the torch and the welding gas supply amount, gas storage The supply of the welding gas from the tank 103 to the second welding means (-, 251) is controlled. In addition, after sensing the temperature of the second welding means (-, 251), if the second welding means 251 exceeds the set temperature, the current supply to the second welding means (-, 251) is cut off. .

Finally, an arc torch is used as the second welding means (+, 251) during arc welding, and an AC current supplied from the outside is removed from the second circuit breaker 106 via the second filter unit 210 to remove the noise signal. After rectifying the DC current from the second input rectifying unit 220 in the closed state, the ripple is removed from the second smoothing unit 230. Subsequently, after the second inverter unit 240 is converted into an alternating current, the welding operation can be performed while supplying current from the second output rectifying unit 250 to the second welding means (+, 251). At this time, the third driving unit 270 controls the DC current value input to the second welding means 251 with respect to the DC current value output through the output rectifying unit 250 and the second welding means (+, 251). Enable welding by arc torch.

As such, the multi-welding apparatus according to the exemplary embodiment may include the first filter unit 110, the first input rectifying unit 120, and the first smoothing unit 130 in the first installation space 101 of the main body 100. ), The first inverter unit 140, the first output rectifying unit 150, and the first driving unit 160, and the second filter unit 210 and the second input to the second installation space part 102. By providing the rectifying unit 220, the second smoothing unit 230, the second inverter unit 240, the second output rectifying unit 250, the second driving unit 260 and the third driving unit 270, The MIG welding through the first welding means 151 and the TIG welding and the arc welding through the second welding means 251 can be performed, which can occupy less installation space and facilitate the mobile installation. .

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

100: main body 101: first installation space
102: second installation space 110: first filter unit
120: first input rectifying unit 130: first smoothing unit
140: first inverter unit 150: first output rectifying unit
160: first driving unit 210: second filter unit
220: second input rectifying unit 230: second smoothing unit
240: second inverter unit 250: second output rectifying unit
260: second drive unit 270: third drive unit

Claims (6)

A main body having a box structure divided into a first installation space portion and a second installation space portion;
A first filter unit disposed in the first installation space and configured to remove a noise signal from an AC current input from the outside;
A first input rectifying unit connected to the first filter unit in a state of being disposed in the first installation space and rectifying an alternating current output from the first filter unit into a direct current;
A first smoothing unit connected to a first input rectifying unit in a state of being disposed in the first installation space and removing ripples from a DC current output from the first input rectifying unit;
A first inverter unit connected to the first smoothing unit in a state of being disposed in the first installation space and converting a direct current output from the first smoothing unit into an alternating current;
A first output rectifier connected to the first inverter unit in a state of being disposed in the first installation space and rectifying the DC current output from the first inverter unit to a DC current so as to be output through the first welding unit and the first ground unit; A unit;
Connected between the first smoothing unit and the first inverter unit in a state of being disposed in the first installation space, the supply control of the welding wire, and the DC current value control output to the first welding means through the first output rectifying unit And a first driving unit controlling whether or not the DC current is output to the first welding means through the first output rectifying unit according to the temperature of the first welding means;
A second filter unit disposed in the second installation space to remove a noise signal from an AC current input from the outside;
A second input rectifier unit connected to the second filter unit in a state of being disposed in the second installation space and rectifying an alternating current output from the second filter unit into a direct current;
A second smoothing unit connected to a second input rectifying unit in a state of being disposed in the second installation space and removing ripples from a DC current output from the second input rectifying unit;
A second inverter unit connected to the second smoothing unit in a state of being disposed in the second installation space and converting a direct current output from the second smoothing unit into an alternating current;
A second output rectifier connected to the second inverter unit in a state of being disposed in the second installation space, and rectifying with a DC current such that an AC current output from the second inverter unit is output through the second welding means and the second ground unit; A unit;
Connected between the second smoothing unit and the second inverter unit in a state of being disposed in the second installation space portion, the operation control of the second welding means and the welding gas supply control, and the second welding through the second output rectifying unit A second driving unit for controlling a direct current value output to the means, controlling whether the direct current is output through the second output rectifying unit through temperature measurement, and preventing a high frequency generation to the second welding means; And
And a third driving unit connected to the second smoothing unit in parallel with the second driving unit in a state of being disposed in the second installation space, and controlling a DC current value output to the second welding means.
The main body is provided with a welding wire feeding unit for automatically supplying a welding wire to the first welding means,
The first driving unit is connected to the welding wire feeding unit, a signal plug for controlling feeding and feeding speed of the welding wire supplied to the first welding means, and connected to the first output rectifying unit by a user. A button connected to the first current control unit, the first driving unit to adjust the DC current output through the first output rectifying unit to the set DC current value, and to allow the user to set the current value; It includes a first control unit consisting of a display unit for visually recognizing the current value set by
The second drive unit is connected to the torch valve for controlling the operation of the second welding means and the gas supply amount, the gas valve for controlling the gas supply to the second welding means, and the second output rectifying unit And a second current adjusting unit to adjust a DC current value output through the second output rectifying unit to a DC current value set by the user.
In order to prevent an overload, the first driving unit includes a first temperature sensor to cut off a current supply to the first welding means when the temperature rises above a predetermined range while sensing the temperature of the first welding means. When the temperature rises above the set range while sensing the temperature of the welding means, a second temperature sensor is provided in the second driving unit to cut off the supply of current to the second welding means, and the main body uses a torch as the second welding means. Multi-welding apparatus comprising a cooling device for circulating the cooling water to the Tig torch. delete The method according to claim 1,
The main body is provided with a gas storage tank provided with a regulator in a seated state,
And an external power supply unit connected to the first inverter unit and supplying power to a heater that heats the regulator to prevent a temperature drop of the regulator. delete The method according to claim 1,
The first welding means connected to the first output rectifying unit is a mig gun,
And a second welding means connected to the second output rectifying unit comprises a tag torch and an arc torch, and the tag torch and the arc torch are electrically connected in parallel to the second output rectifying unit. The method according to claim 1,
A button which is connected to the second driving unit and the third driving unit in a state of being disposed outside the main body to enable setting of a current value by the user according to the use of the TIG welding and the arc welding selection of the second welding means, and And a second control unit comprising a display unit for visually recognizing a current value set by the controller.

Images