KR101620889B1 - arc welding apparatus - Google Patents

arc welding apparatus Download PDF

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Publication number
KR101620889B1
KR101620889B1 KR1020150084404A KR20150084404A KR101620889B1 KR 101620889 B1 KR101620889 B1 KR 101620889B1 KR 1020150084404 A KR1020150084404 A KR 1020150084404A KR 20150084404 A KR20150084404 A KR 20150084404A KR 101620889 B1 KR101620889 B1 KR 101620889B1
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KR
South Korea
Prior art keywords
control unit
transformer
welding
electrically connected
power supply
Prior art date
Application number
KR1020150084404A
Other languages
Korean (ko)
Inventor
김기운
Original Assignee
김기운
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Publication date
Application filed by 김기운 filed Critical 김기운
Priority to KR1020150084404A priority Critical patent/KR101620889B1/en
Application granted granted Critical
Publication of KR101620889B1 publication Critical patent/KR101620889B1/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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/006—Safety devices
    • 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
    • B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
    • B23K9/1006—Power supply

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

Abstract

The present invention relates to an arc welding machine to prevent an electric shock of a worker in advance by completely blocking power supplied from a power supply unit by sensing an excessive power between a current transformer and an output terminal of a welding transformer. The present invention comprises: a power supply unit (102) which supplies power; an electronic switch (104) which receives power from the power supply unit (102), transmitting the supplied power to a control unit by being electrically connected with the power supply unit (102); a first control unit (106) which receives power from the power supply unit (102) depending on an on or off state of the electronic switch (104), controlling a welding transformer and a fan depending on a preset program by being electrically connected with the electronic switch (104); the welding transformer (108) which generates an arc depending on the control signal of the first control unit (106) by being electrically connected with the first control unit (106); the fan (110) which blows wind to the welding transformer depending on the control signal of the first control unit (106) by being electrically connected with the first control unit (106); a current transformer (C.T) electrically connected with the first control unit (106) and the output terminal of the welding transformer (108); and a second control unit (112) which sends an off signal to the electronic switch (104) when excessive power is transmitted between the current transformer and the output terminal of the welding transformer by being installed between the current transformer (C.T) and the output terminal of the welding transformer (108).

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 for detecting an over-current between an output end of a welding transformer and a current transformer, thereby completely preventing power supplied from a commercial power supply, will be.

Welding refers to a joining method in which a welded portion is joined to a heated member in a molten state. In other words, it is different from the mechanical joint using screws or rivets as a work of joining two metals together, and it is not possible to disassemble joints by welding in general. In addition, there is a method of interposing and bonding other heated metals between the metals to be bonded, which is also included in a wide range of welding. It is necessary to heat and melt the base material and the additive material to be welded, and there are various welding methods.

Arc welding, which is another expression of electric welding, is a method of using arc discharge by electricity to join metal and metal. It is a carbon arc welding method using a carbon electrode (carbon electrode) There are two types of metal arc welding used. The temperature of arc welding reaches a high temperature of 5,000 ~ 6,000K and strong ultraviolet rays are emitted, so workers should wear helmets, aprons and gloves to protect their eyes and body.

There are two types of arc welding: carbon arc welding using a carbon electrode (carbon electrode) and metal arc welding using a metal electrode. Carbon arc welding generates an arc between a welding base material and a carbon electrode The welding electrode is melted to fill the welding part. As the arc moves, the filling is hardened and welded. In the metal arc welding, an arc is generated between the electrodes made of the same kind of metal as the welding base material, And bonding the base material by filling the joint part.

1 is a schematic diagram of a general arc welder.

The arc welder 1, as shown in Fig. 1,

A commercial power supply unit 3 for supplying commercial power;

A control unit 5 electrically connected to the commercial power supply unit 3 to receive power from the commercial power supply unit 3 and to control the welding transformer and the blower fan according to a preset program;

A welding transformer (7) electrically connected to the controller (5) and generating an arc in accordance with a control signal of the controller (5);

A blowing fan 9 electrically connected to the control unit 5 and supplying wind to the welding transformer 7 according to a control signal of the control unit 5;

And an output terminal of the welding transformer 7 and a current transformer CT electrically connected to the control unit 5.

However, the arc welder 1 shown in Figs. 1 and 2 can not sense the power flowing between the output terminal of the welding transformer 7 and the current transformer CT,

There is a problem that when an over-power source flows between the output terminal of the welding transformer 7 and the current transformer CT, an operator may be injured by electric shock.

[Prior Art]

[Document 1] Registered Utility Model No. 20-0457387 (Name of Design: Output Display Control Steering Arc Welder, Registration Date: December 12, 2011)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a welding transformer, And an electric arc welder is provided to prevent the electric shock of the worker in advance by completely cutting off the power source.

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 commercial power supply 102 for supplying commercial power;

An electronic switch (104) electrically connected to the commercial power supply unit (102) and receiving power from the commercial power supply unit (102) and sending the supplied commercial power to the control unit;

A first control unit electrically connected to the electronic switch 104 to receive power from the commercial power supply unit 102 according to the ON or OFF state of the electronic switch 104 and to control the welding transformer and the fan according to a predetermined program 106);

A welding transformer (108) electrically connected to the first controller (106) and generating an arc in accordance with a control signal of the first controller (106);

A blowing fan 110 electrically connected to the first control unit 106 and supplying wind to the welding transformer 108 according to a control signal of the first control unit 106;

A transformer (CT) electrically connected to the output terminal of the welding transformer 108 and the first control unit 106;

A second control unit installed between the output terminal of the welding transformer and the current transformer CT for detecting an over power between the output terminal of the welding transformer and the current transformer and sending an OFF signal to the electronic switch 104 when an over- 112).

As described above, the arc welder according to the present invention detects over-power between the output terminal of the welding transformer and the current transformer,

The electric power supplied from the commercial power supply unit is completely cut off, so that the electric shock of the worker can be prevented in advance.

1 is a schematic diagram of a general arc welder,
Figure 2 is a photograph of an interior of a conventional arc welder,
3 is a schematic diagram of an arc welder according to the present invention,
4 is a photograph showing an inside 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 schematic view of an arc welder according to the present invention, and FIG. 4 is a photograph showing an inside of an arc welder according to the present invention.

As shown in Figs. 3 to 4, the arc welder 100 includes:

A commercial power supply 102 for supplying commercial power;

An electronic switch (104) electrically connected to the commercial power supply unit (102) and receiving power from the commercial power supply unit (102) and sending the supplied commercial power to the control unit;

A first control unit electrically connected to the electronic switch 104 to receive power from the commercial power supply unit 102 according to the ON or OFF state of the electronic switch 104 and to control the welding transformer and the fan according to a predetermined program 106);

A welding transformer (108) electrically connected to the first controller (106) and generating an arc in accordance with a control signal of the first controller (106);

A blowing fan 110 electrically connected to the first control unit 106 and supplying wind to the welding transformer 108 according to a control signal of the first control unit 106;

A transformer (CT) electrically connected to the output terminal of the welding transformer 108 and the first control unit 106;

A second control unit installed between the output terminal of the welding transformer and the current transformer CT for detecting an over power between the output terminal of the welding transformer and the current transformer and sending an OFF signal to the electronic switch 104 when an over- 112).

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 first control unit 106.

The first control unit 106 sends a control signal to the welding transformer 108 and the blowing fan 110 according to a preset program.

The welding transformer 108 generates an arc in accordance with a control signal of the first controller 106.

The blowing fan 110 cools the welding transformer 108 by supplying air to the welding transformer 108.

The second control unit 112 senses power flowing between the output terminal of the welding transformer and the current transformer and compares the preset power value with the sensed power value. If the sensed power value is greater than the predetermined power value , And sends an OFF signal to the electronic switch 104.

The electronic switch 104 is turned off in response to a control signal from the second control unit 112.

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

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
102: Commercial power supply
104: Electronic switch
106: first control unit
108: welding transformer
110: blowing fan
112: second control section
CT: Current transformer

Claims (2)

A commercial power supply 102 for supplying commercial power;
An electronic switch (104) electrically connected to the commercial power supply unit (102) and receiving power from the commercial power supply unit (102) and sending the supplied commercial power to the control unit;
A first control unit electrically connected to the electronic switch 104 to receive power from the commercial power supply unit 102 according to the ON or OFF state of the electronic switch 104 and to control the welding transformer and the fan according to a predetermined program 106);
A welding transformer (108) electrically connected to the first controller (106) and generating an arc in accordance with a control signal of the first controller (106);
A blowing fan 110 electrically connected to the first control unit 106 and supplying wind to the welding transformer 108 according to a control signal of the first control unit 106;
A transformer CT electrically connected to the output terminal of the welding transformer 108 and the first control unit 106;
A second control unit installed between the output terminal of the welding transformer and the current transformer CT for detecting an over power between the output terminal of the welding transformer and the current transformer and sending an OFF signal to the electronic switch 104 when an over- 112). ≪ / RTI > delete
KR1020150084404A 2015-06-15 2015-06-15 arc welding apparatus KR101620889B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150084404A KR101620889B1 (en) 2015-06-15 2015-06-15 arc welding apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150084404A KR101620889B1 (en) 2015-06-15 2015-06-15 arc welding apparatus

Publications (1)

Publication Number Publication Date
KR101620889B1 true KR101620889B1 (en) 2016-05-16

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Family Applications (1)

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KR1020150084404A KR101620889B1 (en) 2015-06-15 2015-06-15 arc welding apparatus

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101965827B1 (en) 2018-06-25 2019-04-05 태운전력전자 주식회사 The smart control welding machine

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
KR200327886Y1 (en) * 2003-06-25 2003-09-26 한국아이엔전자공업주식회사 structure of 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
KR200327886Y1 (en) * 2003-06-25 2003-09-26 한국아이엔전자공업주식회사 structure of welding machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101965827B1 (en) 2018-06-25 2019-04-05 태운전력전자 주식회사 The smart control welding machine

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