CN103817402A - Multifunctional high-frequency inversion direct-current electric welding machine realizing circuit - Google Patents
Multifunctional high-frequency inversion direct-current electric welding machine realizing circuit Download PDFInfo
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- CN103817402A CN103817402A CN201210500317.2A CN201210500317A CN103817402A CN 103817402 A CN103817402 A CN 103817402A CN 201210500317 A CN201210500317 A CN 201210500317A CN 103817402 A CN103817402 A CN 103817402A
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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
- B23K9/1056—Power supply characterised by the electric circuit by using digital means
- B23K9/1062—Power supply characterised by the electric circuit by using digital means with computing means
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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
- B23K9/0953—Monitoring or automatic control of welding parameters using computing means
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Abstract
The invention relates to an electric welding machine circuit, in particular to a multifunctional high-frequency inversion direct-current electric welding machine realizing circuit which comprises an electric welding machine control unit, a voltage regulator, a current regulator, a PWM (pulse-width modulation) control circuit, an IGBT (insulated gate bipolar transistor) driving circuit, a high-frequency inversion direct-current power source main circuit, an electric welding machine output electrode, a current detection circuit and an isolation voltage detection circuit. The electric welding machine control unit is a control center taking a CPU (central processing unit) logic control unit as a core, and the CPU logic control unit is connected with a display unit, a constant-current or constant-voltage control unit, a D/A converter and an A/D converter respectively. High-frequency technology, soft switching technology and digital control technology are adopted to realize constant-voltage characteristic and constant-current characteristic of an electric welding machine. The electric welding machine has three functions including TIG (argon tungsten-arc welding), MMA (manual metal arc) and MIG (metal-inert gas) welding, production cost is lowered, requirements on multifunctional intelligentization and high-quality welding are met, and the electric welding machine has a friendly display interface and is convenient to operate and use.
Description
Technical field
The present invention relates to a kind of electric welding machine circuit, particularly a kind of multifunctional high frequency direct-current inverter welding machine is realized circuit, and this circuit can be realized TIG argon tungsten-arc welding, MMA manual welding, three kinds of functions of MIG metal utmost point gas shielded arc welding.
Background technology
Since reform and opening-up, national economy rapid growth, " scientific and technical innovation, autonomous innovation " become the main flow of current domestic industry development, and China's industry is just progressively to the future development of intensive style, energy-saving and emission-reduction, low-carbon (LC).Electric welding machine is low voltage equipment conventional in building, manufacture, mechanical processing industry, and it is widely used as welding jig indispensable in industrial production.Along with the process of industrial expansion and internationalizationof of market, China's electric welding machine is by numerous countries are accepted.The operation principle of electric welding machine is similar to transformer, it is a step-down transformer, the two ends of its primary coil are connected with AC power, the two ends of its secondary coil are welded parts and are clipped in the welding rod on welding clamp, by the electric arc that ignites between welded part and welding rod, the high temperature that utilizes electric arc is fused into the gap of workpiece and welding rod to be integrated, and realizes welding.At present, IGBT direct-current inverter welding machine is widely used, and its good electric property and significant energy-saving effect have all obtained sufficient embodiment in various capital construction industries, and the electric welding machine of being produced by this technology is widely used in industry-by-industry.The most of PWM technology that adopts of China IGBT direct-current inverter welding machine, by professional SG3525PWM control integration circuit, regulates the dutycycle of IGBT power switch pipe, thereby reaches the adjusting of output current size.Because TIG (argon tungsten-arc welding), MMA (manual welding), MIG (metal utmost point gas shielded arc welding) have different qualities requirement separately; therefore; in existing IGBT high frequency inversion electric welder product; only there is the simple function of TIG weldering, MMA weldering or MIG weldering, also do not realize the Multi-functional arc welding generator of TIG weldering, MMA weldering, MIG weldering simultaneously.Multi-functional machine has not only been brought convenience to user, has reduced the cost of investment of equipment simultaneously, offers convenience also to the production of electric welding machine.Along with the development of electronic technology and microprocessor technology, the multifunction that realizes separate unit electric welding machine has become possibility.The technical staff of R&D institution and enterprise is constantly exploring, is studying, wish to develop a kind of electric welding machine of superior performance, to meet the functional requirement of TIG weldering, MMA weldering and MIG weldering simultaneously, although make some progress, in practice, still exist the technical barrier not yet overcoming.
Summary of the invention
The object of the invention is to overcome above deficiency, provide a kind of multifunctional high frequency direct-current inverter welding machine to realize circuit, this electric welding machine circuit adopts high frequency technique, soft switch technique and digital control technology, meet constant-voltage characteristic and the constant-current characteristics of electric welding machine, realize multi-functional, intelligent, the high-quality welding of electric welding machine.
The technical solution adopted for the present invention to solve the technical problems is: comprise electric welding machine control module, voltage regulator, current regulator, pwm control circuit, IGBT drive circuit, high-frequency inversion dc source main circuit, electric welding machine output electrode, current detection circuit, isolation voltage testing circuit, described electric welding machine control module is the control centre take cpu logic control module as core, contain display unit, cpu logic control module, constant current/constant voltage control module, D/A converter, A/D converter, keyboard, keyboard connects cpu logic control module, cpu logic control module connects respectively display unit, constant current/constant voltage control module, D/A converter, A/D converter, constant current/constant voltage control module connects selector switch MUX, D/A converter from electric welding machine control module extends three-line, wherein a circuit directly connects selector switch MUX, another connection indicator lamp I, indicator lamp I connects voltage regulator, voltage regulator connects selector switch MUX, selector switch MUX connects indicator lamp II, Article 3 circuit directly connects indicator lamp II, indicator lamp II connects pwm control circuit, pwm control circuit connects IGBT drive circuit, IGBT drive circuit connects high-frequency inversion dc source main circuit, power supply is inputted from high-frequency inversion dc source main circuit, high-frequency inversion dc source main circuit connects electric welding machine output electrode, electric welding machine output electrode negative pole connects current detection circuit, current detection circuit connects the A/D converter of electric welding machine control module, current detection circuit connects indicator lamp II simultaneously, isolation voltage testing circuit one end is connected on the circuit between high-frequency inversion dc source main circuit and electric welding machine output electrode, one end connects the A/D converter of electric welding machine control module, isolation voltage testing circuit connects indicator lamp I simultaneously, form multifunctional high frequency direct-current inverter welding machine and realized circuit.
The present invention solves the know-why that its technical problem adopts: this electric welding machine adopts high frequency technique, soft switch technique and digital control technology, meets constant-voltage characteristic and the constant-current characteristics of electric welding machine, realizes multi-functional, intelligent, the high-quality welding of electric welding machine.This electric welding machine is directly powered by single-phase or three-phase alternating-current supply, through rectification circuit and isolated H bridge translation circuit, produces electric current and voltage for welding.This electric welding machine adopts High Performance SCM or digital signal processor as control core, realizes the intellectuality control of Current Control and the welding procedure of electric welding machine.By the detection to electric welding machine output current and voltage, judge the duty of electric welding machine, determine thus the given of the given signal VG of voltage, given value of current signal IG and push current IQ, according to operation interface setting parameter, electric welding machine is realized and being welded under TIG, MMA, tri-kinds of patterns of MIG.Usually, TIG and MMA electric welding machine have constant-current source characteristic, and MIG electric welding machine requires to have constant pressure source characteristic.
Send signal CL by electric welding machine control module and control selector switch MUX, determine the mode of operation of multifunctional high frequency inversion welding machine, i.e. constant current/constant voltage control is selected.In the time that signal CL is low level, selector switch MUX beats downwards (connection status in figure), current regulator input is provided by voltage regulator, and whole system forms the dicyclo control structure of a current inner loop, outer voltage, and electric welding machine is output as constant-voltage characteristic.Under constant voltage mode, the control structure of electric welding machine system is voltage, current double closed-loop, is constant-voltage characteristic, is applicable to MIG bond pattern.If output voltage is floating voltage value, show that welding machine is in preparing striking state; If output voltage starts to decline, show that electric welding machine is in hot start state; If it is too low that output voltage occurs, should increase output current (being push current IQ), to prevent current interruption; If output is short-circuited, output voltage is zero, should carry out short-circuit protection.Under above-mentioned various states, cpu logic control module will judge according to the detected value of output voltage and electric current, and sends the given signal VG of corresponding output voltage.
Send signal CL by electric welding machine control module and control selector switch MUX, determine the mode of operation of multifunctional high frequency inversion welding machine, i.e. constant current/constant voltage control is selected.In the time that signal CL is high level, selector switch MUX beats upwards, and current regulator input is provided by electric welding machine control module, and whole system forms single electric current loop structure, and electric welding machine is output as constant-current characteristics.Under constant current mode, the control structure of electric welding machine system is electric current list closed loop, is constant-current characteristics, is applicable to TIG and MMA bond pattern.If there is no output current, show that electric welding machine is in preparing striking state; If have output current and have output voltage, show that electric welding machine is in normal welded condition; If have output current and there is no output voltage, show that electric welding machine is in short-circuit protection or striking state.Under above-mentioned various states, cpu logic control module will judge according to the detected value of output voltage and electric current, and sends the given signal IG of corresponding output current.
Beneficial effect of the present invention: this electric welding machine adopts high frequency technique, soft switch technique and digital control technology, meet constant-voltage characteristic and the constant-current characteristics of electric welding machine, there is TIG weldering, MMA weldering, MIG simultaneously and weld three kinds of functions, reduce production cost, realized multi-functional, intelligent, the high-quality welding of electric welding machine.This electric welding machine can change control strategy easily according to setting, and automatically realizes the welding process requirement under different mode, and has perfect protection, fault alarm and processing capacity.
Accompanying drawing explanation
In figure, be that multifunctional high frequency direct-current inverter welding machine is realized circuit theory diagrams.
In the drawings, 1 display unit, 2 electric welding machine control modules, 3CPU logic control element, 4 constant current/constant voltage control modules, 5D/A converter, 6 indicator lamp I, 7 voltage regulators, 8 indicator lamp II, 9 current regulators, 10PWM control circuit, 11IGBT drive circuit, 12 high-frequency inversion dc source main circuits, 13 electric welding machine output electrodes, 14 current detection circuits, 15 isolation voltage testing circuits, 16A/D converter, 17 keyboards.
The specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
This circuit comprises electric welding machine control module 2, voltage regulator 7, current regulator 9, pwm control circuit 10, IGBT drive circuit 11, high-frequency inversion dc source main circuit 12, electric welding machine output electrode 13, current detection circuit 14, isolation voltage testing circuit 15, described electric welding machine control module 2 is the control centres take cpu logic control module 3 as core, contain display unit 1, cpu logic control module 3, constant current/constant voltage control module 4, D/A converter 5, A/D converter 16, keyboard 17, keyboard 17 connects cpu logic control module 3, cpu logic control module 3 connects respectively display unit 1, constant current/constant voltage control module 4, D/A converter 5, A/D converter 16, constant current/constant voltage control module 4 connects selector switch MUX, D/A converter 5 from electric welding machine control module 2 extends three-line, wherein a circuit directly connects selector switch MUX, another connection indicator lamp I6, indicator lamp I6 connects voltage regulator 7, voltage regulator 7 connects selector switch MUX, selector switch MUX connects indicator lamp II8, Article 3 circuit directly connects indicator lamp II8, indicator lamp II8 connects pwm control circuit 10, pwm control circuit 10 connects IGBT drive circuit 11, IGBT drive circuit 11 connects high-frequency inversion dc source main circuit 12, power supply is inputted from high-frequency inversion dc source main circuit 12, high-frequency inversion dc source main circuit 12 connects electric welding machine output electrode 13, electric welding machine output electrode 13 negative poles connect current detection circuit 14, current detection circuit 14 connects the A/D converter 16 of electric welding machine control module 2, current detection circuit 14 connects indicator lamp II8 simultaneously, isolation voltage testing circuit 15 1 ends are connected on the circuit between high-frequency inversion dc source main circuit 12 and electric welding machine output electrode 13, one end connects the A/D converter 16 of electric welding machine control module 2, isolation voltage testing circuit 15 connects indicator lamp I6 simultaneously, form multifunctional high frequency direct-current inverter welding machine and realized circuit.
This electric welding machine adopts high frequency technique, soft switch technique and digital control technology, meets constant-voltage characteristic and the constant-current characteristics of electric welding machine, realizes multi-functional, intelligent, the high-quality welding of electric welding machine.This electric welding machine is directly powered by single-phase or three-phase alternating-current supply, through rectification circuit and isolated H bridge translation circuit, produces electric current and voltage for welding.This electric welding machine adopts High Performance SCM or digital signal processor as control core, realizes the intellectuality control of Current Control and the welding procedure of electric welding machine.By the detection to electric welding machine output current and voltage, judge the duty of electric welding machine, determine thus the given of the given signal VG of voltage, given value of current signal IG and push current IQ, according to operation interface setting parameter, electric welding machine is realized and being welded under TIG, MMA, tri-kinds of patterns of MIG.Usually, TIG and MMA electric welding machine have constant-current source characteristic, and MIG electric welding machine requires to have constant pressure source characteristic.
Send signal CL by electric welding machine control module 2 and control selector switch MUX, determine the mode of operation of multifunctional high frequency inversion welding machine, i.e. constant current/constant voltage control is selected.In the time that signal CL is low level, selector switch MUX beats downwards (connection status in figure), current regulator 9 is inputted by voltage regulator 7 and is provided, and whole system forms the dicyclo control structure of a current inner loop, outer voltage, and electric welding machine is output as constant-voltage characteristic.Under constant voltage mode, the control structure of electric welding machine system is voltage, current double closed-loop, is constant-voltage characteristic, is applicable to MIG bond pattern.If output voltage is floating voltage value, show that welding machine is in preparing striking state; If output voltage starts to decline, show that electric welding machine is in hot start state; If it is too low that output voltage occurs, should increase output current (being push current IQ), to prevent current interruption; If output is short-circuited, output voltage is zero, should carry out short-circuit protection.Under above-mentioned various states, cpu logic control module 3 will judge according to the detected value of output voltage and electric current, and sends the given signal VG of corresponding output voltage.
Send signal CL by electric welding machine control module 2 and control selector switch MUX, determine the mode of operation of multifunctional high frequency inversion welding machine, i.e. constant current/constant voltage control is selected.In the time that signal CL is high level, selector switch MUX beats upwards, and current regulator 9 is inputted by electric welding machine control module 2 and provided, and whole system forms single electric current loop structure, and electric welding machine is output as constant-current characteristics.Under constant current mode, the control structure of electric welding machine system is electric current list closed loop, is constant-current characteristics, is applicable to TIG and MMA bond pattern.If there is no output current, show that electric welding machine is in preparing striking state; If have output current and have output voltage, show that electric welding machine is in normal welded condition; If have output current and there is no output voltage, show that electric welding machine is in short-circuit protection or striking state.Under above-mentioned various states, cpu logic control module 3 will judge according to the detected value of output voltage and electric current, and sends the given signal IG of corresponding output current.
Claims (1)
1. multifunctional high frequency direct-current inverter welding machine is realized circuit, comprise electric welding machine control module, voltage regulator, current regulator, pwm control circuit, IGBT drive circuit, high-frequency inversion dc source main circuit, electric welding machine output electrode, current detection circuit, isolation voltage testing circuit, it is characterized in that: described electric welding machine control module is the control centre take cpu logic control module as core, contain display unit, cpu logic control module, constant current/constant voltage control module, D/A converter, A/D converter, keyboard, keyboard connects cpu logic control module, cpu logic control module connects respectively display unit, constant current/constant voltage control module, D/A converter, A/D converter, constant current/constant voltage control module connects selector switch MUX, D/A converter from electric welding machine control module extends three-line, wherein a circuit directly connects selector switch MUX, another connection indicator lamp I, indicator lamp I connects voltage regulator, voltage regulator connects selector switch MUX, selector switch MUX connects indicator lamp II, Article 3 circuit directly connects indicator lamp II, indicator lamp II connects pwm control circuit, pwm control circuit connects IGBT drive circuit, IGBT drive circuit connects high-frequency inversion dc source main circuit, power supply is inputted from high-frequency inversion dc source main circuit, high-frequency inversion dc source main circuit connects electric welding machine output electrode, electric welding machine output electrode negative pole connects current detection circuit, current detection circuit connects the A/D converter of electric welding machine control module, current detection circuit connects indicator lamp II simultaneously, isolation voltage testing circuit one end is connected on the circuit between high-frequency inversion dc source main circuit and electric welding machine output electrode, one end connects the A/D converter of electric welding machine control module, isolation voltage testing circuit connects indicator lamp I simultaneously, form multifunctional high frequency direct-current inverter welding machine and realized circuit.
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| CN201210500317.2A CN103817402A (en) | 2012-11-18 | 2012-11-18 | Multifunctional high-frequency inversion direct-current electric welding machine realizing circuit |
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| CN201210500317.2A CN103817402A (en) | 2012-11-18 | 2012-11-18 | Multifunctional high-frequency inversion direct-current electric welding machine realizing circuit |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104690398A (en) * | 2015-02-11 | 2015-06-10 | 上海广为焊接设备有限公司 | Three-purpose welder logic control circuit |
| CN105592607A (en) * | 2014-10-22 | 2016-05-18 | 中国科学院苏州纳米技术与纳米仿生研究所 | Constant-current control circuit structure applied to high-power LED device |
| CN105880801A (en) * | 2014-12-03 | 2016-08-24 | 盐城鼎力达焊接科技有限公司 | Easily operated intelligent inverter manual welding machine |
| CN106112210A (en) * | 2016-08-22 | 2016-11-16 | 浙江颐顿机电有限公司 | Three function digit electric welding machines |
| CN106216812A (en) * | 2016-08-09 | 2016-12-14 | 上海广为焊接设备有限公司 | Realize the control circuit of multi-functional inverter type welder |
| CN107598339A (en) * | 2017-09-21 | 2018-01-19 | 上海广为焊接设备有限公司 | Multi-functional inverter type welder system with double pi regulators |
| CN108705181A (en) * | 2018-07-17 | 2018-10-26 | 上海广为焊接设备有限公司 | Indicate the display system of Multi-functional arc welding generator working condition |
| CN111992850A (en) * | 2020-08-28 | 2020-11-27 | 北京博清科技有限公司 | Welding control equipment and welding system |
| CN115889944A (en) * | 2023-01-05 | 2023-04-04 | 广州亦高电气设备有限公司 | Manual arc welding control method and control device |
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| CN106112210B (en) * | 2016-08-22 | 2019-02-12 | 浙江颐顿机电有限公司 | Three function digit electric welding machines |
| CN107598339A (en) * | 2017-09-21 | 2018-01-19 | 上海广为焊接设备有限公司 | Multi-functional inverter type welder system with double pi regulators |
| CN108705181A (en) * | 2018-07-17 | 2018-10-26 | 上海广为焊接设备有限公司 | Indicate the display system of Multi-functional arc welding generator working condition |
| CN111992850A (en) * | 2020-08-28 | 2020-11-27 | 北京博清科技有限公司 | Welding control equipment and welding system |
| CN115889944A (en) * | 2023-01-05 | 2023-04-04 | 广州亦高电气设备有限公司 | Manual arc welding control method and control device |
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Application publication date: 20140528 |