KR101540932B1 - AC ARC welding device - Google Patents

AC ARC welding device Download PDF

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Publication number
KR101540932B1
KR101540932B1 KR1020140047290A KR20140047290A KR101540932B1 KR 101540932 B1 KR101540932 B1 KR 101540932B1 KR 1020140047290 A KR1020140047290 A KR 1020140047290A KR 20140047290 A KR20140047290 A KR 20140047290A KR 101540932 B1 KR101540932 B1 KR 101540932B1
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KR
South Korea
Prior art keywords
current
welding
transformer
remote
unit
Prior art date
Application number
KR1020140047290A
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Korean (ko)
Inventor
임예선
김근효
김쌍목
최재영
Original Assignee
씨앤더블 주식회사
임예선
김근효
김쌍목
최재영
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Application filed by 씨앤더블 주식회사, 임예선, 김근효, 김쌍목, 최재영 filed Critical 씨앤더블 주식회사
Priority to KR1020140047290A priority Critical patent/KR101540932B1/en
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Publication of KR101540932B1 publication Critical patent/KR101540932B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/095—Monitoring or automatic control of welding parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/09—Arrangements or circuits for arc welding with pulsed current or voltage
    • B23K9/091—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
    • B23K9/1006—Power supply
    • B23K9/1043—Power supply characterised by the electric circuit
    • B23K9/1056—Power supply characterised by the electric circuit by using digital means

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding Control (AREA)
  • Generation Of Surge Voltage And Current (AREA)

Abstract

The present invention relates to an AC arc welding device. The device includes a multi-protection device controlling a normal operation of a welding device by sensing a current generated in a secondary coil in accordance to the application of an AC power in a transformer, and preventing an overload of the transformer by determining an abnormality and malfunction of an electric shock preventer by blocking power applied to a primary coil in a standby state switched when the current is not sensed; and a remote current control device controlling a welding current, generated from the operation of the welding device by adjusting an operating core in accordance to the operation of a transformer operating motor without an extra switch device while a user stays away from the welding device. Therefore, the flow of the current is switched into a welding state by sensing a load of the secondary coil of the transformer, generated when welding is performed, and the power applied to the primary coil in accordance to the abnormal operation is blocked by sensing an abnormal supply power through the electric shock preventer; thereby preventing the malfunction of the electric shock preventer and safety accidents and fire caused by an overload.

Description

[0001] AC ARC welding device [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an AC arc welding apparatus and, more particularly, to an AC arc welding apparatus which detects a load of a secondary coil of a transformer generated during a welding operation to convert a current flow into a welding state, The present invention relates to an AC arc welding apparatus for detecting an abnormal operation of an AC arc welding apparatus and detecting an abnormal operation of the AC arc welding apparatus.

In addition, the present invention relates to an AC arc welding apparatus capable of adjusting a welding current to a welding machine at a long distance without a separate switching device so that a movable iron core driving motor can be set to a desired current for adjusting a welding current according to a welding operation.

Generally, an arc welder used for welding an iron metal is welded by using an arc generated while supplying power to a base material to be welded through a welding rod in a state where a commercial power source is converted into a high current state. The end which is in contact with the base material is melted due to the high heat generated by the heat source, and the arc is repeatedly generated by repeatedly discharging the short circuit.

On the other hand, in such an arc welder, the end portion of the welding rod is welded to the base material due to carelessness or mistake of the user, so that the arc welding device may not fall off. In this case, a high current is energized through the welding rod and the welding machine is overloaded, thereby causing a problem of damaging the welding machine. Particularly, when the welding rod is welded to the base material, the welding rod is heated hot, and the welding rod is damaged or the parts of the welding device are deteriorated to deteriorate performance

In the conventional AC arc welding machine, as shown in FIG. 1, power is always applied to the transformer primary coil side, and when a human body or an object contacts the secondary connection terminal, an AC current flows to cause an electric shock accident and a fall accident.

In addition to welding welding, it also minimizes standby power by preventing the electric shock and minimizing standby power by attaching the electric shock prevention device that minimizes the primary power by touching the human body or sensing the state of the standby state. However, The primary power source is short-circuited repeatedly unnecessarily at a high speed, thereby preventing an electric shock accident, and the load on the transformer primary coil of the welding machine is rapidly increased, thereby causing a fire in the transformer inside the welding machine.

The risk of safety accidents is always present because the user can not confirm whether or not there is an electric shock prevention device before a fire accident or electric shock due to the structure of the existing electric shock preventer or AC arc welding device.

In addition, as shown in FIG. 2, since the installation position of the AC arc welding apparatus is spaced apart from the welding operation position of the user, the welding operation is performed. Therefore, in order to convert a proper welding current, There is an inconvenience in use such as shifting to the welding operation position and performing the welding operation.

Accordingly, the present invention proposes an AC arc welding apparatus capable of preventing safety accidents caused by fire, electric shock, and welding current conversion at a long distance.

[Related Technical Literature]

1. Arc Welding Apparatus Patent Registration No. 10-0625080

2. DC arc and AC current mixed arc welder and its welding method (Patent Application No. 10-2000-0066802) combined use of DC and AC and the welding method

3. ELECTRIC ARC WELDER FOR VARIABLE AC INPUT for variable AC input (Patent No. 10-0895478)

4. ELECTRIC ARC WELDING APPARATUS, ELECTRIC ARC WELDING METHOD, AND APPARATUS MANUFACTURED BY THE METHOD (METHOD OF ELECTRIC ARC WELDING APPARATUS, ELECTRIC ARC WELDING METHOD, 10-0592356)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a transformer secondary coil, which detects a load of a transformer secondary coil generated during a welding operation, converts a current flow into a welding state, The present invention is to provide an AC arc welding apparatus capable of preventing abnormal operation of the electric shock preventer, fire and safety accident due to overload by cutting off the power applied to the primary coil according to the operation.

 Further, the present invention provides an AC arc welding apparatus capable of adjusting a welding current to a welding machine at a remote location without a separate switching device so as to set a movable iron core drive motor in a welding machine to adjust a welding current according to a welding operation .

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, an AC arc welding apparatus according to an embodiment of the present invention controls a normal operation of a welding machine by detecting a current generated in a secondary coil according to application of AC power in a transformer, And a power supply to the primary coil is turned off to judge whether the electric shock prevention device has a failure or an abnormality to prevent the overload of the transformer. In addition, when the user is separated from the welding machine, And a remote current control device capable of adjusting the current through adjustment of the movable core according to the operation of the transformer driving motor without a separate switching device.

At this time, in the AC arc welding apparatus according to the present invention, the multiple protection apparatus senses the current generated in the secondary coil of the transformer of the welding machine during the welding operation, automatically determines the welding state or no-load standby state reference, An abnormality detecting unit for detecting an abnormally supplied power source through the electric shock prevention device in a no-load standby state to determine whether there is a malfunction or an abnormal operation of the electric shock protection device and transmit the corresponding signal to the control unit, A control unit for receiving a signal transmitted from the sensing unit to switch to a welding or no-load state, and determining whether there is an abnormal operation in a no-load state to send out a control signal for interrupting the flow of power supplied to the welding machine; In response to this, the power supplied to the electric shock prevention device in the welding state of the welding device is welded The transformer is switched to be directly supplied to the primary coil of the transformer and the power line is connected to the transformer of the welder so that abnormal operation can be detected in no-load state. Thus, the power supply to the transformer And a power supply conversion unit.

Further, in the AC arc welding apparatus according to the present invention, the remote current control device includes a current adjusting unit provided in a form of a switch on one side of the inside of the welder, for adjusting the current through up or down driving according to an arbitrary drive signal of a user, A wired remote controller which is connected to a connection connector attached to one side of the main body and transmits a wire signal for adjusting the current when the driving of the current controller is restricted, a remote current controller installed inside the main body of the welder, A wireless remote controller for transmitting a remote wireless signal for current adjustment and a current adjusting signal of a current adjuster, a wired remote controller, and a wireless remote controller, and controlling the driving motor to change the position of the movable core, By changing the positions of the primary and secondary coils, the welding current is supplied to the welding body And a remote current control unit for controlling various operations of the lock remote current control apparatus.

Further, in the AC arc welding apparatus according to the present invention, the current adjusting unit is located on the front surface of the welding machine main unit, and the upward / downward switch is conveniently attached to the user. When the user is close to the welding machine main body or using the wired / And the remote current control unit is located inside the AC arc welding machine and has a wireless receiving unit. The remote control unit is connected to the connection connector of the wired remote control, the current adjusting unit, and the driving motor so that the current adjusting unit, the wired remote control, And the drive motor is connected to the movable iron core and connected to the primary coil and the secondary coil in accordance with the rotation of the movable iron core in accordance with the control signal of the remote current control unit. By changing the output current of the transformer of the coil, It is configured to be characterized.

The AC arc welding apparatus according to an embodiment of the present invention detects a load of a secondary coil of a transformer generated during a welding operation to switch a current flow to a welding state and detects an abnormal supply power through a trip- It is possible to prevent an abnormal operation of the electric shock prevention device, fire and safety accident caused by overload by cutting off the power applied to the primary coil according to the abnormal operation.

The AC arc welding apparatus according to another embodiment of the present invention receives a signal transmitted from the movable iron core driving motor and each adjusting means of the transformer in the welding machine without moving the user while the user is separated from the welding machine, Thereby providing the effect of controlling the drive motor by adjusting the desired current remotely.

1 is a cross-sectional view showing a state of an AC arc welding apparatus provided with a conventional electric shock prevention device.
2 is a cross-sectional view showing a state of a current adjusting device for driving a driving motor of a conventional AC arc welding apparatus
3 is a cross-sectional view showing the state of the AC arc welding apparatus according to the present invention
Fig. 4 is a diagram showing an AC arc welding apparatus according to Fig. 3
5 is a cross-sectional view showing the state of an AC arc welding apparatus for remote control according to another embodiment of the present invention
6 is a configuration diagram showing a state of an AC arc welding apparatus for remote control according to Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description of preferred embodiments of the present invention will be given with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In the present specification, when any one element 'transmits' data or signals to another element, the element can transmit the data or signal directly to the other element, and through at least one other element Data or signal can be transmitted to another component.

The present invention includes a multi-protection device that can protect a welder and a user in an AC arc welder, and a remote current control device that can control a welding current by a wired or wireless remote control to transmit a corresponding signal remotely AC arc welding system.

FIG. 3 is a cross-sectional view showing the state of the AC arc welding apparatus according to the present invention, and FIG. 4 is a structural view showing the AC arc welding apparatus according to FIG. 3 and 4, the multiple protection apparatus 100 of the AC arc welding apparatus according to the present invention includes an AC power supply (not shown) in the transformer, 400), it controls the normal operation of the welding machine by detecting the current generated in the secondary coil, switches to standby state when the current is not detected, and cuts off the power applied to the primary coil, So as to prevent the overload of the transformer to prevent a fire safety accident.

The AC protective device 100 of the AC arc welding apparatus includes a load sensing unit 10, a control unit 20 and a power supply conversion unit 30. The AC protective device 100 includes an AC arc welding device 100, The AC power source 400, the primary coil 600, the secondary coil 500, and the main body 700 to be welded are interlocked with each other to protect the welder and the user in abnormal operation.

The load sensing unit 10 senses the current generated in the transformer secondary coil 500 of the AC arc welding apparatus 100 during the actual welding operation and automatically determines the welding state or no-load standby state reference, The abnormal power sensing unit 40 senses a power supply abnormally supplied through the electric shock protection device 300 in a no-load standby state to determine whether the electric shock protection device 300 has a failure or an abnormal operation, (20).

The control unit 20 receives a signal transmitted from the load sensing unit 10 and the abnormal power sensing unit 40 and determines whether there is an abnormal operation in a welding or no-load (standby) state or in a no- And the supply power conversion unit 40 is responsive to the control signal of the control unit 20 to supply the control signal to the electric shock prevention device 300 in the welding state of the welding device The power supply line is connected to the welding transformer so that the supplied power is directly supplied to the primary coil 600 of the welder transformer and the abnormal operation is detected in the no-load (standby) state. The power supply to the welder transformer according to an abnormal operation of the power source 300 is blocked.

5 is a cross-sectional view illustrating a state of an AC arc welding apparatus for remote control according to an embodiment of the present invention, and FIG. 6 is a diagram showing a state of an AC arc welding apparatus for remote control according to FIG. 5 . Referring to FIGS. 3 to 6, the remote current control apparatus of the AC arc welding apparatus of the present invention will now be described in detail. The remote current control apparatus 200 of the AC arc welding apparatus according to the present invention, The welding current for driving the welding machine can be adjusted so that the transformer moving iron core driving motor can be conveniently adjusted through current control without a separate switching device.

The remote current control apparatus 200 of the AC arc welding apparatus according to the present invention includes a current controller 210, a wired remote controller 220 and a remote current controller 240. The remote current controller 200 and the driving motor 800, the AC power source 400, the primary coil 600, the secondary coil 500 and the main body 700 to be welded are interlocked with each other so that even if three kinds of switches are operated without a separate switching device, It is possible to adjust the current desired by the user by properly driving the transformer moving iron core driving motor.

The current regulating unit 210 is provided in a form of a switch on one side of the inside of the welder, and is configured to adjust the current through an up or down driving according to a user's arbitrary drive signal. The wired remote controller 220 is installed on one side And the wireless remote controller 230 is connected to the remote current controller 240 installed in the interior of the welder main body, and the wireless remote controller 230 is connected to the remote controller 240 installed inside the main body of the welder, And transmits a remote radio signal for adjusting the current in the welding machine through the wireless signal.

That is, the current adjuster 210 is located on the front surface of the welder main body and is a switch that is attached to the user so that the user can easily operate the up / down operation. When the user is close to the welder main body or the wired / And the wired remote controller 220 is connected through a connection connector of the main body so that the current can be adjusted in a situation where it is difficult to use the wireless remote controller or the switch of the welding machine main body due to the influence of the user, So that it can be used. In addition, it is convenient for the user to carry or use as the adjustment device which is convenient for the user to use through the wireless remote controller 230.

The remote current controller 240 controls various operations of the remote current controller 200 and controls the current adjuster 210, the wired remote controller 220 and the wireless remote controller 230 And the position of the primary coil 600 and the secondary coil 500 is changed according to the applied AC power source 400 by controlling the drive motor 800 to convert the position of the movable core 900, 700) to supply the current required for welding.

That is, the remote current control unit 240 is located inside the AC arc welder and has a wireless receiving unit. The remote control unit 240 is connected to the connection connector of the wired remote controller 220, the current adjusting unit 210 and the driving motor 800, The wired remote controller 220, and the wireless remote controller 230, and is operated to receive the signal selectively.

The driving motor 800 is connected to the movable iron core 900 and drives the primary coil 600 and the secondary coil 500 according to the rotation of the movable iron core 900 according to a control signal of the remote current controller 240. [ The output current of the transformer is changed to provide the current necessary for welding of the weld body 700.

As described above, preferred embodiments of the present invention have been disclosed in the present specification and drawings, and although specific terms have been used, they have been used only in a general sense to easily describe the technical contents of the present invention and to facilitate understanding of the invention , And are not intended to limit the scope of the present invention. It is to be understood by those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

100: Multiple protection devices
10: load detecting section 20: control section
30: Supply power conversion section
200: remote current control device
210: current adjusting unit 220: wired remote control
230: Wireless remote controller 240: Remote current controller
300: Electric shock prevention device 400: AC power source
500: secondary coil 600: primary coil
700: welding body 800: drive motor
900: Movable iron core

Claims (4)

It controls the normal operation of the welding machine by detecting the current generated in the secondary coil according to the application of the AC power supply 400 in the transformer and switches the power supply to the primary coil when the current is not detected, In order to prevent overloading of the transformer by judging a failure or an abnormality, a current generated in the transformer secondary coil 500 of the welder during the actual welding operation is sensed to automatically determine the welding state or the no- A load detecting unit 10 for transmitting a signal to the control unit 20 by detecting a power supply abnormally supplied through the electric shock protection device 300 in a no load standby state and determining whether the electric shock protection device 300 has a failure or an abnormal operation, And receives signals transmitted from the abnormal power detecting unit 40, the load detecting unit 10, and the abnormal power detecting unit 40, which transmit the corresponding signals, A controller 20 for determining whether there is an abnormal operation in the state of the welding device and sending out a control signal for interrupting the flow of power supplied to the welding machine, and a control unit 20, responsive to the control signal of the control unit 20, The power supply line is connected to the welding transformer so that the power supplied to the transformer 300 is directly supplied to the primary coil 600 of the welder transformer and the abnormal operation is detected in the no- And a power supply conversion unit (40) for cutting off the power supply to the welding machine transformer according to the power supply voltage. In a state where the user is separated from the welding machine, the welding current according to the driving of the welding machine is provided as a switch on one side of the inside of the welding machine so that the current can be adjusted through adjustment of the moving iron core according to the operation of the transformer driving motor without a separate switching device A current adjusting unit 210 for adjusting a current through a rising or falling driving according to a user's arbitrary driving signal, a current adjusting unit 210 for connecting the current adjusting unit 210 with the connecting connector attached to one side of the welding machine main body, A wireless remote controller 230 for interfacing with a remote current controller 240 installed in the interior of the welder main body and transmitting a remote wireless signal for adjusting current in a welding machine through a wireless signal, And a current adjusting signal of the welding device of the current adjusting unit 210, the wire remote control 220 and the wireless remote control 230 to control the driving motor 800 The positions of the primary coil 600 and the secondary coil 500 are changed according to the applied AC power source 400 by changing the position of the movable core 900 to supply a current necessary for welding to the welding main body 700 And a remote current control unit (240) for controlling the overall operation of the remote current control unit so that the remote current control unit (240)
The current adjuster 210 is located on the front of the welder main body and is mounted on the welder so that the user can easily adjust the current when the user is close to the welder or the wired / Respectively,
The remote current control unit 240 is located inside the AC arc welder and has a wireless receiving unit and is connected to the connecting connector of the wired remote controller 220 and the current adjusting unit 210 and the driving motor 800 to control the current adjusting unit 210, And a current adjusting signal of the welding machine of the remote controller 220 and the wireless remote controller 230,
The driving motor 800 is connected to the movable iron core 900 and drives the primary coil 600 and the secondary coil 500 according to the rotation of the movable iron core 900 according to a control signal of the remote current controller 240. [ Wherein an output current of the transformer is changed to provide a current necessary for welding of the welding body (700).

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KR1020140047290A 2014-04-21 2014-04-21 AC ARC welding device KR101540932B1 (en)

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KR1020140047290A KR101540932B1 (en) 2014-04-21 2014-04-21 AC ARC welding device

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Application Number Priority Date Filing Date Title
KR1020140047290A KR101540932B1 (en) 2014-04-21 2014-04-21 AC ARC welding device

Publications (1)

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KR101540932B1 true KR101540932B1 (en) 2015-08-03

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200256472Y1 (en) * 2001-09-04 2001-12-13 한국산업안전공단 A protect circuit of ac arc welder
KR200361406Y1 (en) * 2004-06-28 2004-09-10 최환성 Remote control welding machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200256472Y1 (en) * 2001-09-04 2001-12-13 한국산업안전공단 A protect circuit of ac arc welder
KR200361406Y1 (en) * 2004-06-28 2004-09-10 최환성 Remote control welding machine

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