CN106270943A - A kind of twin voltage input automatic switching control circuit being applied to electric welding machine - Google Patents
A kind of twin voltage input automatic switching control circuit being applied to electric welding machine Download PDFInfo
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- CN106270943A CN106270943A CN201610903836.1A CN201610903836A CN106270943A CN 106270943 A CN106270943 A CN 106270943A CN 201610903836 A CN201610903836 A CN 201610903836A CN 106270943 A CN106270943 A CN 106270943A
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- welding machine
- electric welding
- audion
- control circuit
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Classifications
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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
- B23K9/1006—Power supply
- B23K9/1043—Power supply characterised by the electric circuit
- B23K9/105—Power supply characterised by the electric circuit by using discharge tubes or mechanical contactors
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- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
- Arc Welding Control (AREA)
Abstract
The invention provides a kind of twin voltage input automatic switching control circuit being applied to electric welding machine, belong to electric welding machine technical field.It solving existing electric welding machine cannot the problem of general normal work for complicated power grid environment.This control circuit includes voltage junction point AC1 and AC2, rectifier bridge DB1, audion Q1, photo-coupler U1 and power relay K1, voltage junction point AC1 and AC2 is connected with pin 1 and the pin 2 of photo-coupler U1 respectively, varistor R1 and AC1 it is provided with by commutation diode D1 rectification between AC1 and pin 1, connect between AC1 and AC2 and have electrolytic capacitor filter C1, the pin 3 of photo-coupler U1 is connected with the emitter stage of audion Q1 and ground connection, the pin 4 of photo-coupler U1 is connected with the base stage of audion Q1, and the colelctor electrode of audion Q1 is connected with power relay K1.It is 110VAC or 220VAC that the present invention has quickly detection electric welding machine input voltage, and automatically determines whether to open times pressure condition, to ensure the advantage that electric welding machine can normally work.
Description
Technical field
The invention belongs to electric welding machine technical field, relate to a kind of circuit, particularly to a kind of double electricity being applied to electric welding machine
Pressure input automatic switching control circuit.
Background technology
Electric welding machine be the high-temperature electric arc utilizing positive and negative polarities to produce when the instantaneous short circuit solder that comes on consumable electrode and
Materials to be welded, makes the purpose that touched thing combines.Electric welding machine uses electric energy, and electric energy moment is converted to heat energy, and electricity is the most general
Time, electric welding machine is suitable in the environment of being dried working, it is not necessary to too many requirement, because of compact, simple to operate, easy to use,
Speed, after welding, weld seam is solid etc., and advantage is widely used in every field.
Owing to electric welding machine uses electric energy, and line voltage between every country is the most different in the world, tradition
Electric welding machine typically rated voltage is designed to 110V or 220V, normal work that therefore cannot be general for complicated power grid environment
Make practicality poor.
Summary of the invention
It is an object of the invention to for the above-mentioned problems in the prior art, it is provided that one makes electric welding machine at 110VAC
Or the twin voltage input automatic switching control circuit that also can normally work under the conditions of 220VAC input voltage.
The purpose of the present invention can be realized by following technical proposal: a kind of twin voltage being applied to electric welding machine inputs automatically
Control switching circuit, this control circuit include voltage junction point AC1 and AC2, rectifier bridge DB1, audion Q1, photo-coupler U1 and
Power relay K1, it is characterised in that described voltage junction point AC1 and AC2 respectively with pin 1 and the pin of photo-coupler U1
2 connect, and are provided with varistor R1 and AC1 by commutation diode D1 rectification, described AC1 between described AC1 and pin 1
With connection has electrolytic capacitor filter C1, the pin 3 of described photo-coupler U1 are connected with the emitter stage of audion Q1 and connect between AC2
Ground, the pin 4 of described photo-coupler U1 is connected with the base stage of audion Q1, the colelctor electrode of described audion Q1 and power relay
K1 is connected.
In above-mentioned a kind of twin voltage input automatic switching control circuit being applied to electric welding machine, described AC1 and drawing
Being also associated with metalfilmresistor R2 between foot 1, connecting between described AC2 and pin 2 has metalfilmresistor R5.
In above-mentioned a kind of twin voltage input automatic switching control circuit being applied to electric welding machine, described pin 4 He
Connect between the base stage of audion Q1 and have commutation diode D2, between described pin 3 and pin 4, be additionally provided with filtering electrolysis electricity
Hold C2 and metalfilmresistor R4.
In above-mentioned a kind of twin voltage input automatic switching control circuit being applied to electric welding machine, described commutation diode
The model of D1 and D2 is UF4004.
In above-mentioned a kind of twin voltage input automatic switching control circuit being applied to electric welding machine, described varistor R1
Model be 14D151.
The technical scheme of the twin voltage input automatic switching control circuit that should be used for electric welding machine is: when AC1 and AC2 connects
After electrical network, if line voltage is at 110VAC (± 15%), then the resistance of varistor R1 is very big, flows through photo-coupler U1's
1, the electric current of 2 feet is the least, causes photo-coupler U1 to be not turned on, and 4 feet of U1 are high level, and audion Q1 turns at once, makes
Power relay K1 produces Guan Bi, and after K1 Guan Bi, namely electric welding machine main circuit belongs to a times pressure condition, it is ensured that electric welding machine main circuit
Original edge voltage at 310VDC (± 15%)；If electric network voltage voltage is at 220VAC (± 15%), then the resistance of varistor R1 exists
In one linear value, flow through the 1 of photo-coupler U1, the electric current of 2 feet can cause photo-coupler U1 to turn on, and 4 feet of U1 are low electricity
Flat, audion Q1 disconnects at once, makes power relay K1 to close, and after K1 does not closes, namely electric welding machine main circuit belongs to
Not times pressure condition, it is ensured that the original edge voltage of electric welding machine main circuit is at 310VDC (± 15%).Thus can complete 110VAC (±
15%) and 220VAC (± 15%) these net pressure under the conditions of, the original edge voltage of the main circuit of electric welding machine maintain 310VDC (±
15%), it is ensured that the condition that electric welding machine main circuit normally works.
Compared with prior art, the twin voltage input automatic switching control circuit of electric welding machine should be used for for complicated electricity
Net environment, electric welding machine also can normally work under the conditions of needing to meet various input voltage, and this control circuit can quickly detect electricity
Welding machine input voltage is 110VAC(± 15%) or 220VAC(± 15%), and automatically determine whether to open times pressure condition, to protect
Card electric welding machine can normally work, and has the more preferable advantage of practicality.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of this twin voltage input automatic switching control circuit.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on
Embodiment in the present invention, those of ordinary skill in the art obtained under not making creative work premise all other
Embodiment, broadly falls into the scope of protection of the invention.
As it is shown in figure 1, in the embodiment of the present invention, a kind of twin voltage input auto-changeover control electricity being applied to electric welding machine
Road, this control circuit includes voltage junction point AC1 and AC2, rectifier bridge DB1, audion Q1, photo-coupler U1 and power relay
K1, voltage junction point AC1 and AC2 are connected with pin 1 and the pin 2 of photo-coupler U1 respectively, are provided with between AC1 and pin 1
Varistor R1 and AC1 passes through commutation diode D1 rectification, and connecting between AC1 and AC2 has electrolytic capacitor filter C1, photo-coupler
The pin 3 of U1 is connected with the emitter stage of audion Q1 and ground connection, and the pin 4 of photo-coupler U1 is connected with the base stage of audion Q1,
The colelctor electrode of audion Q1 is connected with power relay K1.
Describing in detail further, be also associated with metalfilmresistor R2 between AC1 and pin 1, connecting between AC2 and pin 2 has gold
Belonging to membrane resistance R5, connecting between the base stage of pin 4 and audion Q1 has commutation diode D2, also sets up between pin 3 and pin 4
Having electrolytic capacitor filter C2 and metalfilmresistor R4, the model of commutation diode D1 and D2 is UF4004, the type of varistor R1
Number it is 14D151.
Fig. 1 is the circuit theory diagrams of the present invention, after AC1 and AC2 connects electrical network, if line voltage 110VAC (±
15%), after D1 rectification, the voltage of electrolytic capacitor filter C1 between 131 and 178VDC, varistor R1 (14D151) two
Within the voltage of end is clamped at 160VDC, because also metalfilmresistor R2, R5, flow through the 1 of photo-coupler U1, the electricity of 2 feet
Flowing the least, cause photo-coupler U1 to be not turned on, 4 feet of U1 are high level, and audion Q1 turns at once, makes normally opened relay
K1 produces Guan Bi, and after K1 Guan Bi, namely main circuit of the welding machine belongs to a times pressure condition；If line voltage is at 220VAC (± 15%),
After D1 rectification, the voltage of electrolytic capacitor filter C1 between 278 and 344VDC, varistor R1(14D151) electricity at two ends
Pressure is clamped at 160VDC, because also metalfilmresistor R2, R5, flows through the 1 of photo-coupler U1, the electric current of 2 feet has 8 to arrive
13mA, can cause photo-coupler U1 to turn on, and 4 feet of U1 are low levels, and audion Q1 disconnects at once, make normally opened relay K1 not
Can close, after K1 does not closes, namely main circuit of the welding machine belongs to not times pressure condition.
Specific embodiment described herein is only to present invention spirit explanation for example.Technology neck belonging to the present invention
Described specific embodiment can be made various amendment or supplements or use similar mode to replace by the technical staff in territory
Generation, but without departing from the spirit of the present invention or surmount scope defined in appended claims.
Claims (5)
1. being applied to a twin voltage input automatic switching control circuit for electric welding machine, this control circuit includes voltage junction point
AC1 and AC2, rectifier bridge DB1, audion Q1, photo-coupler U1 and power relay K1, it is characterised in that described voltage is even
Contact AC1 and AC2 is connected with pin 1 and the pin 2 of photo-coupler U1 respectively, is provided with pressure-sensitive between described AC1 and pin 1
Resistance R1 and AC1 passes through commutation diode D1 rectification, and connecting between described AC1 and AC2 has electrolytic capacitor filter C1, described light
The pin 3 of bonder U1 is connected with the emitter stage of audion Q1 and ground connection, and the pin 4 of described photo-coupler U1 is with audion Q1's
Base stage connects, and the colelctor electrode of described audion Q1 is connected with power relay K1.
A kind of twin voltage input automatic switching control circuit being applied to electric welding machine the most according to claim 1, its feature
Being, be also associated with metalfilmresistor R2 between described AC1 and pin 1, connecting between described AC2 and pin 2 has metal
Membrane resistance R5.
A kind of twin voltage input automatic switching control circuit being applied to electric welding machine the most according to claim 1, its feature
Being, connecting between described pin 4 and the base stage of audion Q1 has commutation diode D2, between described pin 3 and pin 4
It is additionally provided with electrolytic capacitor filter C2 and metalfilmresistor R4.
A kind of twin voltage input automatic switching control circuit being applied to electric welding machine the most according to claim 1, its feature
Being, the model of described commutation diode D1 and D2 is UF4004.
A kind of twin voltage input automatic switching control circuit being applied to electric welding machine the most according to claim 1, its feature
Being, the model of described varistor R1 is 14D151.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610903836.1A CN106270943A (en) | 2016-10-17 | 2016-10-17 | A kind of twin voltage input automatic switching control circuit being applied to electric welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610903836.1A CN106270943A (en) | 2016-10-17 | 2016-10-17 | A kind of twin voltage input automatic switching control circuit being applied to electric welding machine |
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| Publication Number | Publication Date |
|---|---|
| CN106270943A true CN106270943A (en) | 2017-01-04 |
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|---|---|---|---|
| CN201610903836.1A Pending CN106270943A (en) | 2016-10-17 | 2016-10-17 | A kind of twin voltage input automatic switching control circuit being applied to electric welding machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308160A (en) * | 2020-03-02 | 2020-06-19 | 深圳固邦科技有限公司 | Voltage detection circuit with self-locking function for electric welding machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100170880A1 (en) * | 2008-12-17 | 2010-07-08 | Nelson Stud Welding, Inc. | Capacitor charge and discharge circuit for fastener welding |
| CN202162481U (en) * | 2011-05-26 | 2012-03-14 | 昆山瑞凌焊接科技有限公司 | Self-adaptive inverter welding power source |
| CN202285371U (en) * | 2011-09-26 | 2012-06-27 | 温岭万顺机电制造有限公司 | Automatic dual-voltage switching device |
| CN103780105A (en) * | 2014-01-23 | 2014-05-07 | 上海沪工焊接集团股份有限公司 | Method and system for double-voltage automatic switching control |
| CN204103590U (en) * | 2014-09-15 | 2015-01-14 | 浙江宝石机电股份有限公司 | A kind of twin voltage automatic switching control circuit |
| CN205464724U (en) * | 2016-01-14 | 2016-08-17 | 浙江肯得机电股份有限公司 | Two voltage automatic switching IGBT contravariant manual metal -arc weldings machine |
| CN206122869U (en) * | 2016-10-17 | 2017-04-26 | 浙江普尔尼机电有限公司 | Be applied to automatic switching control circuit of two voltage input of electric welding |
-
2016
- 2016-10-17 CN CN201610903836.1A patent/CN106270943A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100170880A1 (en) * | 2008-12-17 | 2010-07-08 | Nelson Stud Welding, Inc. | Capacitor charge and discharge circuit for fastener welding |
| CN202162481U (en) * | 2011-05-26 | 2012-03-14 | 昆山瑞凌焊接科技有限公司 | Self-adaptive inverter welding power source |
| CN202285371U (en) * | 2011-09-26 | 2012-06-27 | 温岭万顺机电制造有限公司 | Automatic dual-voltage switching device |
| CN103780105A (en) * | 2014-01-23 | 2014-05-07 | 上海沪工焊接集团股份有限公司 | Method and system for double-voltage automatic switching control |
| CN204103590U (en) * | 2014-09-15 | 2015-01-14 | 浙江宝石机电股份有限公司 | A kind of twin voltage automatic switching control circuit |
| CN205464724U (en) * | 2016-01-14 | 2016-08-17 | 浙江肯得机电股份有限公司 | Two voltage automatic switching IGBT contravariant manual metal -arc weldings machine |
| CN206122869U (en) * | 2016-10-17 | 2017-04-26 | 浙江普尔尼机电有限公司 | Be applied to automatic switching control circuit of two voltage input of electric welding |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308160A (en) * | 2020-03-02 | 2020-06-19 | 深圳固邦科技有限公司 | Voltage detection circuit with self-locking function for electric welding machine |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |
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| RJ01 | Rejection of invention patent application after publication |