CN102218579A - Environment-friendly high-frequency arc ignition generator - Google Patents
Environment-friendly high-frequency arc ignition generator Download PDFInfo
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- CN102218579A CN102218579A CN2011101649631A CN201110164963A CN102218579A CN 102218579 A CN102218579 A CN 102218579A CN 2011101649631 A CN2011101649631 A CN 2011101649631A CN 201110164963 A CN201110164963 A CN 201110164963A CN 102218579 A CN102218579 A CN 102218579A
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Abstract
The invention provides an environment-friendly high-frequency arc ignition generator. An arc ignition circuit adopts a working-frequency intermediate and low-voltage transformer; a capacitor is charged and discharged by controlling the conduction and disconnection of controlled silicon; and a coupling transformer outputs a low-frequency voltage so as to carry out arc ignition. In the invention, an arc ignition electrode adopts a pure tungsten electrode, therefore, no ozone is generated, the environment is not polluted and the generator is not affected by the using environment. Simultaneously as the working voltage is stable, the service life of the high-frequency arc-ignition generator of a welder is prolonged.
Description
Technical field
The present invention relates to the argon arc welding machine technical field, particularly relate to a kind of environment-friendly health type high-frequency arc strike generator that is used for argon arc welding machine.
Background technology
The circuit diagram of existing high-frequency arc strike generator as shown in Figure 1, zone 1 ' be an oscillating circuit, determines frequency of oscillation by changing R1, C1, change D2, R2, R9, C8 determine pulsewidth, No. nine pin of U1 are high frequency startup/shutoff control interface.The T1(MOS pipe) the GB step-up transformer with zone 2 ' boosts, capacitor C 11 chargings simultaneously.When being charged to some magnitudes of voltage, 2 tip place discharges in zone 3 ', determine the power of high frequency by changing 2 distances between the tip, the high pressure that finally obtains (about 3KV) boosts (about 12KV) by the high-frequency arc strike transformer on the major loop again, thereby the argon gas ionization of argon-arc welding gun ejection is obtained electric arc.Its cardinal principle is by high frequency high voltage transformer, and voltage is risen to several kilovolts, and C11 charges to high-voltage capacitance.After voltage rises to certain value, produce high-frequency high-voltage current by the air-gap between the disruptive discharge pin, close transformer output high-frequency and high-voltage striking electric current by the corner and carry out striking.
In sum, the output of this kind high-frequency arc strike device will expect that high pressure must have spark to produce, and there is following shortcoming in this striking mode:
1, produces the high-frequency electronic radio frequency during disruptive discharge pin the air gap, produce ozone simultaneously, contaminated environment.
2, because spray point gap (distance) effective controlling dimension precision aborning, and be subjected to the influence of environment for use, as be subjected to the influence of humidity, dust, service time, breakdown voltage between the spray point widely different (several kilovolts even volt up to ten thousand), often produce too high or too low voltage, influence is normal to be used, and influences arcing initiation success rate.
3, generally speaking, because the discharge for a long time in air of tele-release pin, very fast generation oxide layer has a strong impact on arcing initiation success rate.Therefore in order to guarantee arcing initiation success rate, all the spray point gap can be amplified, improve discharge voltage; Have only the use thorium tungsten electrode simultaneously, the striking performance just can be better, but can influence the life-span of hf arc starter like this, and that also can give simultaneously the welder healthyly brings negative effect.
Summary of the invention
The objective of the invention is to overcome the defective that prior art exists, when improving arcing initiation success rate, use environment-friendly materials, reduce injury environment and human body as electrode.
A kind of environment-friendly type high-frequency arc strike generator is characterized in that arc ignition circuit adopts power frequency mesolow transformer, electric capacity is discharged and recharged with shutoff by the conducting of control silicon controlled, closes transformer output low frequency voltage by the corner and carries out striking.
Wherein, arc electrode adopts pure tungsten electrodes.
The invention has the advantages that: 1, do not have the air-gap spray point, do not produce the spatial high-frequency rf electric field, ozone free produces, free from environmental pollution, the influence that is not subjected to environment for use.
2, owing to by electronic circuit controllable silicon is triggered and turn-offs, its operating voltage is stable unusually, can not produce too high or too low voltage, does not therefore need to improve design voltage, the life-span of improving welder high-frequency striking device so greatly again.
3, because output voltage is stable unusually, so arcing initiation success rate is high, can adopt no actinomorphic pure tungsten electrodes, can not have a negative impact to welder's health.
Description of drawings
Can be about the advantages and spirit of the present invention by following detailed Description Of The Invention and appended graphic being further understood.
Fig. 1 is existing high-frequency arc strike device electrical schematic;
Fig. 2 is the circuit side connector block diagram of high-frequency arc strike device of the present invention in argon arc welding machine;
Fig. 3 is a high-frequency arc strike device electrical schematic of the present invention.
The specific embodiment
Describe specific embodiments of the invention in detail below in conjunction with accompanying drawing.
The connection side block diagram of high-frequency arc strike device of the present invention in argon arc welding machine as shown in Figure 2, concrete workflow is as follows: general standard welding equipment electrical network is input as AC380V or AC220V, become direct current (DC) electricity through rectifier bridge rectification, electrochemical capacitor filtering, importing certainly and also will connecing a control transformer usually is that drive plate, control panel (also comprising high frequency generating apparatus) provide electric energy.Filtering direct current later obtains later the intermediate frequency High Level AC Voltage through the IGBT inversion, connect the intermediate frequency step-down transformer and drop to the needed voltage of welding, the centre cap place connects the output port of the marginal and former edge joint high frequency generating apparatus of high frequency transformer and asks for the striking electric energy, two windings of main transformer connect the fast recovery diode rectification in addition, it is negative for output to obtain welding required positive voltage high frequency transformer output through inductor filter again, when we needed the argon arc welding operation, the high-frequency arc strike device was lighted electric arc and is carried out welding job with output formation loop.
Fig. 3 is a high-frequency arc strike device electrical schematic of the present invention, the high-frequency arc strike device is a high pressure generating apparatus, it mainly is used in welding equipment main transformer output loop part, physical property welding gun according to the source of welding current connects output negative pole usually, and high pressure is emitted from tungsten electrode, so will connect a high frequency generating apparatus between main transformer and welding gun.And being power supply, high frequency generating apparatus provides electric energy to the high-frequency arc strike device by control transformer; R1, L1, R4, C4 constitute oscillating circuit; conducting, shutoff generation high pressure through controllable silicon V2 are exported to high frequency transformer (step-up transformer); through boosting once more high-tension electricity is discharged, ionization protective gas (argon gas) produces spark-over workpiece that output cathode connects from the argon-arc welding gun tungsten electrode and makes arc burning.Among the figure, zone 1 is an oscillating circuit, determines discharge voltage by the selection of resistance R 1, R2, R3, by changing resistance R 4,4 definite frequency and times of capacitor C.Regional 2 is booster circuit, when the voltage height arrives some magnitudes of voltage, and the V1(diac) conducting triggering controllable silicon V2 work, make capacitor C 3 discharge and recharge the generation high pressure and export.Boost through duplex frequency boostering transformer T1 again, finally by high frequency transformer T3(step-up transformer) high-tension electricity is discharged make arc burning.
In specific embodiments of the invention, electrode can use pure tungsten electrodes.When high-frequency arc ignition circuit was used in the argon arc welding machine, it was that step-up transformer, R1 are the 681KD20 piezo-resistance that V2 adopts CS19-12H01 controllable silicon, T1.High pressure is emitted by tungsten electrode, forms the loop between ionization argon gas generation spark and the output cathode and produces high thermal energy fusing workpiece.In the time of in being used in air plasma cutter, high pressure is emitted by electrode, forms the loop between high heat energy arc column of ionization compressed air and the output cathode and produces the concentrated arc column cut workpiece of high thermal energy.
In sum, the output of this high-frequency arc strike device to expect high pressure be by controllable silicon V2 conducting, turn-off and realize.Do not have discharge spark to produce, thereby reduce interference self and extraneous electronic devices and components.
Described in this specification is preferred embodiment of the present invention, and above embodiment is only in order to illustrate technical scheme of the present invention but not limitation of the present invention.All those skilled in the art all should be within the scope of the present invention under this invention's idea by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (2)
1. an environment-friendly type high-frequency arc strike generator is characterized in that arc ignition circuit adopts power frequency mesolow transformer, electric capacity is discharged and recharged with shutoff by the conducting of control silicon controlled, closes transformer output low frequency voltage by the corner and carries out striking.
2. high-frequency arc strike generator as claimed in claim 1 is characterized in that arc electrode is a pure tungsten electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101649631A CN102218579A (en) | 2011-06-17 | 2011-06-17 | Environment-friendly high-frequency arc ignition generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101649631A CN102218579A (en) | 2011-06-17 | 2011-06-17 | Environment-friendly high-frequency arc ignition generator |
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| CN102218579A true CN102218579A (en) | 2011-10-19 |
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| CN2011101649631A Pending CN102218579A (en) | 2011-06-17 | 2011-06-17 | Environment-friendly high-frequency arc ignition generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106334857A (en) * | 2016-11-23 | 2017-01-18 | 昆山华恒焊接股份有限公司 | Arc striking circuit for arc welding |
Citations (7)
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| JPH0234278A (en) * | 1988-07-22 | 1990-02-05 | Matsushita Electric Ind Co Ltd | Arc welding equipment |
| JP3368776B2 (en) * | 1996-12-03 | 2003-01-20 | 松下電器産業株式会社 | TIG welding machine |
| CN1775445A (en) * | 2005-11-29 | 2006-05-24 | 陈欢 | High-voltage arc strike electric welding machine |
| CN2806025Y (en) * | 2005-07-15 | 2006-08-16 | 南通三九焊接机器制造有限公司 | High-frequency high-voltage arc striking device |
| CN101425403A (en) * | 2007-10-31 | 2009-05-06 | 吉林永大电气开关有限公司 | Pulse excitation circuit |
| CN201446348U (en) * | 2009-06-30 | 2010-05-05 | 中山火炬职业技术学院 | Automatic arc striking circuit of welding power supply |
| CN201579532U (en) * | 2009-12-25 | 2010-09-15 | 吴建中 | High-voltage arc striking circuit for plasma cutting machine and argon arc welder |
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2011
- 2011-06-17 CN CN2011101649631A patent/CN102218579A/en active Pending
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| JPH0234278A (en) * | 1988-07-22 | 1990-02-05 | Matsushita Electric Ind Co Ltd | Arc welding equipment |
| JP3368776B2 (en) * | 1996-12-03 | 2003-01-20 | 松下電器産業株式会社 | TIG welding machine |
| CN2806025Y (en) * | 2005-07-15 | 2006-08-16 | 南通三九焊接机器制造有限公司 | High-frequency high-voltage arc striking device |
| CN1775445A (en) * | 2005-11-29 | 2006-05-24 | 陈欢 | High-voltage arc strike electric welding machine |
| CN101425403A (en) * | 2007-10-31 | 2009-05-06 | 吉林永大电气开关有限公司 | Pulse excitation circuit |
| CN201446348U (en) * | 2009-06-30 | 2010-05-05 | 中山火炬职业技术学院 | Automatic arc striking circuit of welding power supply |
| CN201579532U (en) * | 2009-12-25 | 2010-09-15 | 吴建中 | High-voltage arc striking circuit for plasma cutting machine and argon arc welder |
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| 《电焊机》 20001231 任志远 "一种新型TIG焊工频高压脉冲引弧器" 34-35 1-2 , 第5期 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106334857A (en) * | 2016-11-23 | 2017-01-18 | 昆山华恒焊接股份有限公司 | Arc striking circuit for arc welding |
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Application publication date: 20111019 |