CN104467513A - Pulse type welder power circuit - Google Patents
Pulse type welder power circuit Download PDFInfo
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- CN104467513A CN104467513A CN201410738182.2A CN201410738182A CN104467513A CN 104467513 A CN104467513 A CN 104467513A CN 201410738182 A CN201410738182 A CN 201410738182A CN 104467513 A CN104467513 A CN 104467513A
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Abstract
The invention discloses a pulse type welder power circuit. The pulse type welder power circuit comprises an AC input end, a power adjusting module, a transformer module, a secondary rectifying module and a DC output end which are sequentially connected. The transformer module is provided with two or more secondary lateral coils, the output ends of the secondary lateral coils are rectified through the secondary rectifying module and then are in parallel connection, and then the output ends of the secondary lateral coils are connected with the DC output end. At least one secondary lateral coil is connected with a switch device in series, and the switch device is connected with a control module and is controlled to be turned on and off by the control module. According to the pulse type welder power circuit, two or more sets of secondary lateral coils of the transformer module are used for generating high and low voltages, the control module controls the switch device to enable the output ends of the secondary lateral coils to be in parallel connection or disconnected, the peak value and the power of pulse output are adjusted, meanwhile, the pulse duty ratio and the frequency can also be adjusted, and initial currents and arc stopping currents under 4T control can also be achieved.
Description
Technical field
The present invention relates to welding machine electric power, be specifically related to a kind of pulsed welding machine electric power circuit.
Background technology
Pulsed welding, because its output current peak value is large, average current is lower, can meets the requirement of general welder, can reduce power output again, thus reduce energy consumption, therefore be applied widely.Existing pulsed welding machine is when welding, and after first input current being converted to pulse current by Transformer Rectifier, duty ratio when utilizing the PWM module control impuls electric current being provided with single-chip microcomputer to export, realizes power adjustments.The single-chip microcomputer price of present existing adjustable pulse current output duty cycle is higher, and it can only realize duty cycle adjustment, can not regulate output current peak value, is difficult to realize 4T and controls lower initial current, receipts arc current.And existing welder circuit can not utilize the simple switch blocks such as relay switch to realize the power adjustments of pulse current output.
Summary of the invention
In order to overcome the deficiencies in the prior art, reducing costs, the invention provides a kind of pulsed welding machine electric power circuit, utilize the second siding ring that transformer module is more than two, produce high-low voltage, make second siding ring parallel connection by switching device or separate, the peak value that regulating impulse exports and power.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of pulsed welding machine electric power circuit, comprise the ac input end, power regulation module, transformer module, secondary rectification module and the DC output end that connect setting successively, described transformer module is provided with plural second siding ring, the output of described second siding ring is by being connected in parallel after the rectification of secondary rectification module, connect DC output end again, wherein at least one second siding ring is in series with switching device, and switching device link control module also controls its opening and closing by control module.
Further, the adjustment mode of described power regulation module is tapped, contravariant or SCR type.
Further, the transformer module primary side of described tapped power regulation module is provided with multistage connector, and before transformer module primary side, corresponding multistage connector is provided with selector switch.
Further, the power regulation module of described contravariant comprises the rectification circuit, filter circuit and the inverter circuit that connect successively, and described inverter circuit is full bridge inverter or half-bridge inversion circuit.
Further, the power regulation module of described SCR type comprises bidirectional triode thyristor, described bidirectional triode thyristor link control module.
Further, described ac input end is single-phase input or three-phase input.
Further, described switching device be in controllable silicon, MOS thyristor, IGBT thyristor, GTO thyristor or relay switch any one or multiple.
Further, described secondary rectification module is full-wave rectification or bridge rectifier or silicon controlled rectifier.
Further, out put reactor is provided with before described DC output end.
In addition, present invention also offers the pulsed welding machine electric power circuit that another kind utilizes multiple transformer to realize, concrete technical scheme is:
A kind of pulsed welding machine electric power circuit, comprise the ac input end, power regulation module, transformer module, secondary rectification module and the DC output end that connect setting successively, described transformer module comprises plural transformer, described transformers connected in parallel connects, be respectively arranged with power regulation module before each transformer, described power regulation module link control module also controls its work or disconnection by control module.
The invention has the beneficial effects as follows:
The second siding ring that pulsed welding machine electric power circuit of the present invention utilizes transformer module more than two, produce high-low voltage, control module control switch device makes the output-parallel of second siding ring or separates, the peak value that regulating impulse exports and power, also can carry out the regulation and control of pulse duty factor, frequency simultaneously, also can realize the initial current under 4T control, receive arc current.
In addition, present invention also offers the pulsed welding machine electric power circuit that another kind utilizes transformers connected in parallel more than two, produce high-low voltage by organizing transformer more, control module controls power regulation module work or disconnection, the peak value that regulating impulse exports and power, also can carry out the regulation and control of pulse duty factor, frequency simultaneously.
Accompanying drawing explanation
Fig. 1 is the circuit connection structure schematic diagram (single-phase) of first embodiment of the invention;
Fig. 2 is the structural representation of tapped power regulation module;
Fig. 3 is the structural representation of the power regulation module of contravariant;
Fig. 4 is the structural representation of the power regulation module of SCR type;
Fig. 5 is the circuit connection structure schematic diagram (three-phase) of second embodiment of the invention;
Fig. 6 is the circuit connection structure schematic diagram of third embodiment of the invention.
Embodiment
With reference to Fig. 1, a kind of pulsed welding machine electric power circuit provided by the invention, comprises the ac input end, power regulation module 1, transformer module 2, secondary rectification module 3 and the DC output end that connect setting successively.Ac input end in the present embodiment is single-phase input, transformer module 2 is provided with two second siding rings, be respectively the first coil windings 21 exporting high pressure and the second coil windings 22 exporting low pressure, the output of the first coil windings 21 and the second coil windings 22 is by being connected in parallel after secondary rectification module 3 rectification, first coil windings 21 is in series with switching device 5, switching device 5 can be the power switching devices such as controllable silicon, MOS thyristor, IGBT thyristor, GTO thyristor or relay switch, as being relay.Switching device 5 link control module 6.Described secondary rectification module 3 is full-wave rectification or bridge rectifier or silicon controlled rectifier.First coil windings 21 is connected DC output end with after the output parallel connection of the second coil windings 22 through reactor 4.
The adjustment mode of described power regulation module 1 is tapped, contravariant or SCR type.With reference to Fig. 2, transformer module 2 primary side of tapped power regulation module 1 is provided with multistage connector 11, before transformer module primary side, corresponding multistage connector 11 is provided with selector switch 12, selector switch 12 can select different joint to connect from multistage connector 11, the power output of regulating circuit.With reference to Fig. 3, the power regulation module 1 of contravariant comprises the rectification circuit 13, filter circuit 14 and the inverter circuit 15 that connect successively, and inverter circuit 15 can be full bridge inverter or half-bridge inversion circuit.With reference to Fig. 4, the power regulation module 1 of SCR type comprises bidirectional triode thyristor 16, bidirectional triode thyristor 16 link control module 6, by cut-offfing control to it, carrys out regulating circuit power.
In use, the first coil windings 21 exports high pressure to the pulsed welding machine electric power circuit of the present embodiment, and the second coil windings 22 exports low pressure.When welding starts, switching device 5 closes, and the output current of the first coil windings 21 and the second coil windings 22 converges, and current peak is promoted, the energy scratch start smoothly when starting; After scratch start, control module 6 control switch device 5 disconnects, and only the second coil windings 22 exports small area analysis, maintains welding arc, can reduce power output, and the excessive and burn through mother metal of the electric current not simultaneously being afraid of again output, reduces the manipulation request of welding machine; When needs scratch start time, switching device 5 is closed again.Above-mentioned steps is carried out in whole welding process circulation.Exported by second siding ring more than two, and the control of switching device 5, power adjustments can be carried out to the pulse current exported, because control module 6 only needs control switch device 5 opening and closing, therefore, control module 6 both can be simple level generating circuit, also can be single-chip microcomputer.In order to better coordinate with wire feed system 7, preferably by wire feed system 7 also link control module 6, coordinate when output current is large and improve wire feed rate, wire feed rate can be reduced when output current is little time, realize the pulse GMAW of high voltage+high current/low voltage+low current, improve the effect of welding, and economize on resources.
With reference to Fig. 5, pulsed welding machine electric power circuit of the present invention is also applicable to the situation of three-phase input.Wherein the connected mode of transformer coil can be Y-connection, also can be triangle and connects.
The second siding ring that pulsed welding machine electric power circuit of the present invention utilizes transformer module 2 more than two, produce high-low voltage, control module 6 control switch device 5 makes the output-parallel of second siding ring or separates, the peak value that regulating impulse exports and power, also can carry out the regulation and control of pulse duty factor, frequency simultaneously, also can realize the initial current under 4T control, receive arc current.
Present invention also offers the pulsed welding machine electric power circuit that another kind utilizes multiple transformer 201 to realize.With reference to Fig. 6, a kind of pulsed welding machine electric power circuit, comprise the ac input end, power regulation module 1, transformer module 2, secondary rectification module 3 and the DC output end that connect setting successively, described transformer module 2 comprises two transformers 201, described transformer 201 is connected in parallel, power regulation module 1 is respectively arranged with, described power regulation module 1 link control module 6 before each transformer 201.During use, control power regulation module 1 by control module 6 and work or disconnect, two transformers 201 are exported together or by a wherein independent output, regulation output electric current, realizes the power adjustments of paired pulses electric current.Power regulation module 1 also can carry out the regulation and control of pulse duty factor, frequency simultaneously.
The foregoing is only preferred embodiments of the present invention, as long as the technical scheme realizing the object of the invention with basic same approach all belongs within protection scope of the present invention.
Claims (10)
1. a pulsed welding machine electric power circuit, comprise the ac input end connecting setting successively, power regulation module (1), transformer module (2), secondary rectification module (3) and DC output end, it is characterized in that: described transformer module (2) is provided with plural second siding ring, the output of described second siding ring is connected in parallel by after secondary rectification module (3) rectification, connect DC output end again, wherein at least one second siding ring is in series with switching device (5), switching device (5) link control module (6) and by control module (6) control its opening and closing make DC output end produce pulse current.
2. a kind of pulsed welding machine electric power circuit according to claim 1, is characterized in that: the adjustment mode of described power regulation module (1) is tapped, contravariant or SCR type.
3. a kind of pulsed welding machine electric power circuit according to claim 2, it is characterized in that: transformer module (2) primary side of described tapped power regulation module (1) is provided with multistage connector (11), before transformer module (2) primary side, corresponding multistage connector (11) is provided with selector switch (12).
4. a kind of pulsed welding machine electric power circuit according to claim 2, it is characterized in that: the power regulation module (1) of described contravariant comprises the rectification circuit (13), filter circuit (14) and the inverter circuit (15) that connect successively, and described inverter circuit (15) is full bridge inverter or half-bridge inversion circuit.
5. a kind of pulsed welding machine electric power circuit according to claim 2, is characterized in that: the power regulation module (1) of described SCR type comprises bidirectional triode thyristor (16), described bidirectional triode thyristor (16) link control module (6).
6. a kind of pulsed welding machine electric power circuit according to claim 1, is characterized in that: described ac input end is single-phase input or three-phase input.
7. a kind of pulsed welding machine electric power circuit according to claim 1, is characterized in that: described switching device (5) is controllable silicon, in MOS thyristor, IGBT thyristor, GTO thyristor or relay switch any one or multiple.
8. a kind of pulsed welding machine electric power circuit according to claim 1, is characterized in that: described secondary rectification module (3) is full-wave rectification or bridge rectifier or silicon controlled rectifier.
9. a kind of pulsed welding machine electric power circuit according to claim 1, is characterized in that: be provided with out put reactor (4) before described DC output end.
10. a pulsed welding machine electric power circuit, comprise the ac input end, power regulation module (1), transformer module (2), secondary rectification module (3) and the DC output end that connect setting successively, it is characterized in that: described transformer module (2) comprises plural transformer (201), described transformer (201) is connected in parallel, each transformer (201) is front is respectively arranged with power regulation module (1), and described power regulation module (1) link control module (6) also controls its work or disconnection by control module (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410738182.2A CN104467513A (en) | 2014-12-05 | 2014-12-05 | Pulse type welder power circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410738182.2A CN104467513A (en) | 2014-12-05 | 2014-12-05 | Pulse type welder power circuit |
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| CN104467513A true CN104467513A (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410738182.2A Pending CN104467513A (en) | 2014-12-05 | 2014-12-05 | Pulse type welder power circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105057868A (en) * | 2015-08-10 | 2015-11-18 | 江门市保值久机电有限公司 | Handheld active control type spot welder for planting nails |
| CN105471292A (en) * | 2015-12-25 | 2016-04-06 | 辽宁北方科技集团有限公司 | Plasma electrolytic oxidation power supply |
| CN108115250A (en) * | 2017-12-19 | 2018-06-05 | 浙江劳士顿焊接设备有限公司 | A kind of Multifunctional welding drive circuit |
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| CN203664899U (en) * | 2013-10-28 | 2014-06-25 | 广东电网公司电力科学研究院 | Pulse MIG welding power system based on STM32 chip |
| CN203851058U (en) * | 2014-05-12 | 2014-09-24 | 济南芯驰能源科技有限公司 | Current-sharing control system for inversion-type arc welding power source dual inverters |
| CN203951373U (en) * | 2014-06-24 | 2014-11-19 | 胡长建 | A kind of single inverter structure of high-power stud welding machine |
| CN204258658U (en) * | 2014-12-05 | 2015-04-08 | 江门市保值久机电有限公司 | A kind of pulsed welding machine electric power circuit |
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2014
- 2014-12-05 CN CN201410738182.2A patent/CN104467513A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN87101022A (en) * | 1987-04-27 | 1987-11-25 | 轻工业上海焊接技术研究所 | Power supply for high speed non-contactor anti-electric shock alternating arc welder |
| CN2185649Y (en) * | 1994-04-28 | 1994-12-21 | 汤如法 | Electric-arc welder for power supply universal a.c. and d.c. thick and thin slab |
| CN2259254Y (en) * | 1996-11-13 | 1997-08-13 | 李恩澍 | Energy-saving multi-purpose welding machine |
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| CN101856769A (en) * | 2009-04-09 | 2010-10-13 | 上海波宝仟赫科技有限公司 | Plasma arc cutting and welding power supply |
| CN202356781U (en) * | 2011-10-21 | 2012-08-01 | 成都艾格科技有限责任公司 | Steel rail flash welding power supply device |
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| CN203951373U (en) * | 2014-06-24 | 2014-11-19 | 胡长建 | A kind of single inverter structure of high-power stud welding machine |
| CN204258658U (en) * | 2014-12-05 | 2015-04-08 | 江门市保值久机电有限公司 | A kind of pulsed welding machine electric power circuit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105057868A (en) * | 2015-08-10 | 2015-11-18 | 江门市保值久机电有限公司 | Handheld active control type spot welder for planting nails |
| CN105057868B (en) * | 2015-08-10 | 2017-10-10 | 江门市保值久机电有限公司 | A kind of hand-held active control type plants nail mash welder |
| CN105471292A (en) * | 2015-12-25 | 2016-04-06 | 辽宁北方科技集团有限公司 | Plasma electrolytic oxidation power supply |
| CN108115250A (en) * | 2017-12-19 | 2018-06-05 | 浙江劳士顿焊接设备有限公司 | A kind of Multifunctional welding drive circuit |
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Application publication date: 20150325 |
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