KR101620890B1 - arc welding apparatus - Google Patents

arc welding apparatus Download PDF

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Publication number
KR101620890B1
KR101620890B1 KR1020150085580A KR20150085580A KR101620890B1 KR 101620890 B1 KR101620890 B1 KR 101620890B1 KR 1020150085580 A KR1020150085580 A KR 1020150085580A KR 20150085580 A KR20150085580 A KR 20150085580A KR 101620890 B1 KR101620890 B1 KR 101620890B1
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KR
South Korea
Prior art keywords
electric shock
power supply
housing
supply unit
electronic switch
Prior art date
Application number
KR1020150085580A
Other languages
Korean (ko)
Inventor
김기운
Original Assignee
김기운
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김기운 filed Critical 김기운
Priority to KR1020150085580A priority Critical patent/KR101620890B1/en
Application granted granted Critical
Publication of KR101620890B1 publication Critical patent/KR101620890B1/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
    • B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
    • 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
    • B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
    • B23K9/073—Stabilising the arc
    • 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
    • B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
    • B23K9/1006—Power supply

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

Abstract

The present invention relates to an arc welding machine which includes an electric shock prevention device capable of preventing an electric shock. The present invention comprises: a housing (101); a power supply unit (102) which supplies power by being installed in one inner side of the housing (101); an electronic switch (104) installed in one inner side of the housing (101) at a predetermined interval from the power supply unit (102), receiving power from the power supply unit (102), and transmitting the received power to an electric shock preventing device by being electrically connected with the power supply unit (102); the electric shock preventing device (106) installed in one inner side of the housing (101) at a predetermined interval from the electronic switch (104), receiving power from the power supply unit (102) depending on an on or off state of the electronic switch (104), and controlling a welding transformer and a fan depending on a preset program by being electrically connected with the electronic switch (104); a welding transformer (108) installed in one inner side of the housing (101) at a predetermined interval from the electric shock preventing device (106), generating an arc depending on a control signal of the electric shock preventing device (106) by being electrically connected with the electric shock preventing device (106); and a fan (110) installed in one inner side of the housing (101) at a predetermined interval from the welding transformer (108), supplying wind to the welding transformer (108) depending on the control signal of the electric shock preventing device (106) by being electrically connected with the electric shock preventing device (106).

Description

Arc welding apparatus}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arc welding machine, and more particularly, to an arc welding machine having a built-in electric shock preventer to prevent electric shock.

Arc welding generates an arc between a welding rod and a base material, and welding is performed using the heat, so a high voltage and a high current are required to generate an arc.

As shown in FIG. 1, in order to prevent an electric shock accident due to the use of such a high voltage, a fire prevention device is installed on one side of the outer surface of the arc welder.

The electric shock preventer maintains the welder in a no-load state before the welding rod attached to the welding rod holder on the welding secondary side contacts the base material. At this time, the welding machine is subjected to a no-load voltage specified below 15 Vrms so as not to impact the human body.

In this state, when the electrode is in contact with the base material, a current flows according to the contact resistance. If it is judged that the electrode is in contact with the base material by sensing the current, it is switched to the welding state within the starting time (within 40 mS) The power supply for the power supply is supplied.

As a result, the output voltage of the welding machine becomes the rated output voltage,

do.

When the user disconnects the welding rod from the base material to stop the welding, the required current is reduced. By detecting this, the welding prevention device switches the welding output voltage to the no-load voltage after a certain time.

Fig. 2 is a schematic view of the arc welder and the electric shock protection device of Fig. 1;

2, the welding state detecting unit 10 includes a rectifying circuit 11 for converting the current detected by the current detector 43 into rectification and voltage, and a rectifying circuit 11 for rectifying the waveform of the voltage passing through the rectifying circuit 11 And a filter circuit 12 for outputting the input signal when the frequency is set (for example, 330 Hz or more).

The current detector 43 is attached to the secondary winding 42 of the welding machine, that is, the output side ground wire or the holder wire, and detects the current flowing through the secondary winding 42 of the welding machine, Respectively.

In addition, the welding state detection unit 10 during welding is designed so that the magnitude of the voltage rectified by the current applied to the secondary winding 42 of the welding machine exceeds a predetermined voltage (for example, 30 V) The signal is passed through the filter circuit 12 to output a welding state control signal so that continuous welding is possible.

A voltage (15 V or less) specified as a no-load voltage is output to the secondary winding 42 of the welder during welding standby. The reason why the voltage is output even during the welding standby is to generate a signal that can be detected by the current detector at the start of welding.

The main contact point control unit 30 includes an SCR element (not shown). When the current output from the welding state detection unit is input to the gate of the SCR element, the main contact point control unit 30 welds So that welding is performed.

However, as shown in FIG. 1, not only the electric shock prevention device is installed on the outer surface of the arc welder, but also the wiring and the power cable of the electric shock prevention device are fixed to the arc welding machine by bolts or electric tapes.

When the electric tape is exposed to light for a long time, there is a problem that the electric tape is cut and electric shock may occur.

Particularly, since the electric shock preventer is installed on the outer surface of the arc welder, there is a fear that the electric shock protector may be stolen, and it is not visually beautiful and difficult to manage.

[Prior Art]

[Patent Document 1] Registered Utility Model No. 20-0308216 (Name of Design: Automatic Electric Firing Preventer for AC Arc Welding Machine, Date of Registration: March 10, 2003)

Accordingly, it is an object of the present invention to provide an arc welder having a built-in electric shock preventer to prevent electric shock.

However, the object of the present invention is 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.

According to an aspect of the present invention, there is provided an arc welder,

A housing (101);

A commercial power supply 102 installed at one side of the inside of the housing 101 to supply commercial power;

The power supply unit 102 is electrically connected to the commercial power supply unit 102 and is supplied with power from the commercial power supply unit 102. The commercial power supply unit 102 is provided at a predetermined distance from the commercial power supply unit 102, An electronic switch (104) for sending commercial power to the electric shock protection device;

The electronic switch 104 is electrically connected to one end of the housing 101 at a predetermined interval from the electronic switch 104. The electronic switch 104 is electrically connected to the commercial power supply unit 102 for controlling the electronic switch (104), the welding transformer and the blowing fan in accordance with a preset program;

A welding transformer installed at one side of the inside of the housing 101 at a predetermined interval from the electric shock preventer 106 and electrically connected to the electric shock preventer 106 to generate an arc in accordance with a control signal of the electric shock interrupter 106; (108);

The welding transformer 108 is installed at one side of the inside of the housing 101 at a predetermined distance from the welding transformer 108 and is electrically connected to the electric shock preventer 106, A blowing fan 110 for blowing the wind to the room;

The power transformer is installed at one side of the inside of the housing 101 at a predetermined interval from the blowing fan 110 and is electrically connected to the output terminal of the welding transformer 108 to sense an over- And a second control unit 112 for sending an OFF signal to the electronic switch 104 at the time when the electronic switch 104 is turned off.

As described above, the arc welder according to the present invention has a built-in electric shock prevention device, thereby preventing electric shock.

In addition, the present invention has an effect that there is no fear that the electric shock prevention device is stolen, and the appearance is good.

Further, the present invention has the effect of remarkably reducing the failure rate of the electric shock prevention device.

The present invention has the effect of saving power by incorporating the electric shock prevention device in the housing.

FIG. 1 is a photograph showing an arc welder equipped with an electric shock prevention device on the outer surface,
Fig. 2 is a schematic diagram of the arc welder and the electric shock prevention device of Fig. 1,
FIG. 3 is a photograph showing an arc welder according to the present invention,
FIG. 4 is a photograph showing the electric shock prevention device built in the arc welder of FIG. 3; FIG.
FIG. 5 is a photograph showing an enlarged view of the electric shock prevention device of FIG.
6 is a schematic configuration diagram of an arc welder according to the present invention.

Hereinafter, a preferred embodiment of the arc welder according to the present invention will be described.

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.

FIG. 3 is a photograph showing an arc welder according to the present invention, FIG. 4 is a photograph showing a lightning protector built in the arc welder of FIG. 3, FIG. 5 is an enlarged view of the lightning protector of FIG. 6 is a schematic configuration diagram of an arc welder according to the present invention.

As shown in Figs. 3 to 6, the arc welder 100 includes:

A housing (101);

A commercial power supply 102 installed at one side of the inside of the housing 101 to supply commercial power;

The power supply unit 102 is electrically connected to the commercial power supply unit 102 and is supplied with power from the commercial power supply unit 102. The commercial power supply unit 102 is provided at a predetermined distance from the commercial power supply unit 102, An electronic switch (104) for sending commercial power to the electric shock protection device;

The electronic switch 104 is electrically connected to one end of the housing 101 at a predetermined interval from the electronic switch 104. The electronic switch 104 is electrically connected to the commercial power supply unit 102 for controlling the electronic switch (104), the welding transformer and the blowing fan in accordance with a preset program;

A welding transformer installed at one side of the inside of the housing 101 at a predetermined interval from the electric shock preventer 106 and electrically connected to the electric shock preventer 106 to generate an arc in accordance with a control signal of the electric shock interrupter 106; (108);

The welding transformer 108 is installed at one side of the inside of the housing 101 at a predetermined distance from the welding transformer 108 and is electrically connected to the electric shock preventer 106, A blowing fan 110 for blowing the wind to the room;

The power transformer is installed at one side of the inside of the housing 101 at a predetermined interval from the blowing fan 110 and is electrically connected to the output terminal of the welding transformer 108 to sense an over- And a second control unit 112 for sending an OFF signal to the electronic switch 104 at the time when the electronic switch 104 is turned off.

Here, the electric shock prevention device 106 is provided with a first control section, and the electronic switch 104, the welding transformer 108, the blowing fan 110, and the like are electrically connected to the first control section.

The operation of the arc welder according to the present invention will now be described.

First, the commercial power supply unit 102 sends commercial power to the electronic switch 104.

The electronic switch 104 receives the commercial power from the commercial power supply unit 102 and sends the supplied commercial power to the electric shock protection unit 106 having the first control unit.

The electric shock preventer 106 sends control signals to the electronic switch 104, the welding transformer 108, and the blower fan 110 according to a predetermined program.

When the detected power value is greater than the predetermined power value, the electric shock detector 106 senses the electric power supplied from the commercial power supply unit 102 and compares the preset power value with the sensed power value, (OFF) signal to the control unit 104.

The electronic switch 104 turns off the switch in accordance with the control signal of the electric shock prevention device 106.

Therefore, since the power supplied from the commercial power supply unit 102 is completely cut off, the worker can be prevented from the electric shock in advance.

Meanwhile. The welding transformer 108 generates an arc in accordance with a control signal of the electric shock preventer 106.

The blowing fan 110 cools the welding transformer 108 by supplying wind to the welding transformer 108 in accordance with the control signal of the electric shock preventer 106.

The second control unit 112 senses the power flowing in the output stage of the welding transformer, compares the preset power value with the sensed power value, and if the sensed power value is greater than the predetermined power value, (OFF) signal to the control unit 104.

The electronic switch 104 turns off the switch in accordance with the control signal of the second control unit 112. [

Therefore, since the power supplied from the commercial power supply unit 102 is completely cut off, it is possible to prevent an electric shock of the worker in advance secondarily.

The foregoing description of the invention is merely exemplary of the invention and is used for the purpose of illustration only and is not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: arc welding machine
101: Housing
102: Commercial power supply
104: Electronic switch
106: Lightning arrestor
108: welding transformer
110: blowing fan
112: second control section

Claims (2)

A housing (101);
A commercial power supply 102 installed at one side of the inside of the housing 101 to supply commercial power;
The power supply unit 102 is electrically connected to the commercial power supply unit 102 and is supplied with power from the commercial power supply unit 102. The commercial power supply unit 102 is provided at a predetermined distance from the commercial power supply unit 102, An electronic switch (104) for sending commercial power to the electric shock protection device;
The electronic switch 104 is electrically connected to one end of the housing 101 at a predetermined interval from the electronic switch 104. The electronic switch 104 is electrically connected to the commercial power supply unit 102 for controlling an electronic switch, a welding transformer, and a blowing fan in accordance with a preset program;
A welding transformer installed at one side of the inside of the housing 101 at a predetermined interval from the electric shock preventer 106 and electrically connected to the electric shock preventer 106 to generate an arc in accordance with a control signal of the electric shock interrupter 106; (108);
The welding transformer 108 is installed at one side of the inside of the housing 101 at a predetermined distance from the welding transformer 108 and is electrically connected to the electric shock preventer 106, A blowing fan 110 for blowing the wind to the room;
The power transformer is installed at one side of the inside of the housing 101 at a predetermined interval from the blowing fan 110 and is electrically connected to the output terminal of the welding transformer 108 to sense an over- And a second controller (112) for sending an OFF signal to the electronic switch (104)
Wherein the electric shock preventer (106) is provided with a first control part. delete
KR1020150085580A 2015-06-17 2015-06-17 arc welding apparatus KR101620890B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150085580A KR101620890B1 (en) 2015-06-17 2015-06-17 arc welding apparatus

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Application Number Priority Date Filing Date Title
KR1020150085580A KR101620890B1 (en) 2015-06-17 2015-06-17 arc welding apparatus

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KR101620890B1 true KR101620890B1 (en) 2016-05-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106903409A (en) * 2017-03-17 2017-06-30 李赵和 A kind of excellent Portable electric welder of radiating effect
CN108406049A (en) * 2018-05-28 2018-08-17 吴忠市中心电焊机有限公司 A kind of mine special type inverter welder equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200327886Y1 (en) * 2003-06-25 2003-09-26 한국아이엔전자공업주식회사 structure of welding machine
KR200447124Y1 (en) * 2009-07-24 2009-12-28 박기호 Flow arc welding machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200327886Y1 (en) * 2003-06-25 2003-09-26 한국아이엔전자공업주식회사 structure of welding machine
KR200447124Y1 (en) * 2009-07-24 2009-12-28 박기호 Flow arc welding machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106903409A (en) * 2017-03-17 2017-06-30 李赵和 A kind of excellent Portable electric welder of radiating effect
CN108406049A (en) * 2018-05-28 2018-08-17 吴忠市中心电焊机有限公司 A kind of mine special type inverter welder equipment

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