CN104668834A - Control circuit for automatic power-on and power-off of electric welder - Google Patents
Control circuit for automatic power-on and power-off of electric welder Download PDFInfo
- Publication number
- CN104668834A CN104668834A CN201310652123.9A CN201310652123A CN104668834A CN 104668834 A CN104668834 A CN 104668834A CN 201310652123 A CN201310652123 A CN 201310652123A CN 104668834 A CN104668834 A CN 104668834A
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- Prior art keywords
- resistance
- transformer
- relay
- chip
- diode
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Classifications
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a control circuit for automatic power-on and power-off of an electric welder. The control circuit comprises a double-knife switch, a first transformer, a second transformer, first to fifth resistors, a first non-polarized capacitor, a second non-polarized capacitor, first to third polarized capacitors, a first relay, a second relay, a full-bridge rectifier, a three-terminal regulator, an NE555 chip, a current transformer, a first diode, a second diode and a triode. The current transformer, the first diode and the third resistor form a current detection circuit. The second transformer, the full-bridge rectifier and the three-terminal regulator form a power supply circuit. The fifth resistor, the triode, the third polarized capacitor, the second diode and the NE555 chip form a delay circuit. The control circuit is high in sensitivity and capable of quickly shutting off and powering on the electric welder so that electricity loss is reduced; the control circuit is low in power consumption, uses few devices and is low in product cost.
Description
Technical field
The present invention relates to a kind of control circuit for electric welding machine auto-power-cutting, particularly relate to a kind of low in energy consumption highly sensitive control circuit for electric welding machine auto-power-cutting.
Background technology
Electric welding machine is that modern industry is produced and equipment indispensable in manufacture field.Electric welding machine has idle in welding process unavoidably, causes loss to waste a large amount of electric energy in unloaded luck guild, if auto-breaking can save electric energy when zero load.At present, the electric energy that the larger waste of power consumption of the auto-power-cutting circuit of electric welding machine is unnecessary, sensitivity is lower causes time delay to stop power transmission affects operating efficiency.
Summary of the invention
Object of the present invention is just to provide a kind of low in energy consumption highly sensitive control circuit for electric welding machine auto-power-cutting to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
Control circuit for electric welding machine auto-power-cutting of the present invention, comprises double-gate switch, first transformer, second transformer, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, first polarity free capacitor, second polarity free capacitor, first polar capacitor, second polar capacitor, 3rd polar capacitor, first relay, second relay, full bridge rectifier, three terminal regulator, NE555 chip, current transformer, first diode, second diode and triode, described current transformer is for responding to the electric current of the secondary coil of the first transformer, and the input of described double-gate switch is electrically connected with city, the first output of described double-gate switch simultaneously with the first end of described first resistance, the first end of described first polarity free capacitor, the first end of described first relay, the first end of the normally opened contact of described first relay, the first input end of described second transformer connects, the second end of described first resistance simultaneously with the second end of described first polarity free capacitor, second end of the normally opened contact of described first relay, the first input end of described first transformer connects, the second output of described double-gate switch simultaneously with the second input of described first transformer, second input of described second transformer, the first end of the normally opened contact of described second relay connects, second end of described first relay is connected with the second end of the normally opened contact of described second relay, the output of described second transformer is connected with the input of described full bridge rectifier, the cathode output end of described full bridge rectifier is connected with the input of described three terminal regulator, the output of described three terminal regulator simultaneously with the positive pole of described first polar capacitor, 4th pin of described NE555 chip, the octal of described NE555 chip, the first end of described second resistance connects, the first output of described current transformer simultaneously with the negative pole of described first diode, the positive pole of described second polar capacitor, the first end of described 4th resistance connects, the positive pole of described first diode is connected with the first end of described 3rd resistance, second end of described 4th resistance is connected with the base stage of described triode, the colelctor electrode of described triode simultaneously with the second end of described second resistance, the first end of described 5th resistance, the crus secunda of described NE555 chip, 6th pin of described NE555 chip connects, second end of described 5th resistance is connected with the first end of described 3rd polar capacitor, 5th pin of described NE555 chip is connected with the first end of described second polarity free capacitor, the tripod of described NE555 chip simultaneously with the negative pole of described second diode, the first end of described second relay connects, the second end of described second relay simultaneously with the cathode output end of described full bridge rectifier, the earth terminal of described three terminal regulator, the negative pole of described first polar capacitor, second output of described current transformer, second end of described 3rd resistance, the negative pole of described second polar capacitor, the emitter stage of described triode, the negative pole of described 3rd polar capacitor, first pin of described NE555 chip, second end of described second polarity free capacitor, the positive pole of described second diode connects, and the output of described first transformer is as the signal output part of described control circuit.
Beneficial effect of the present invention is:
Control circuit for electric welding machine auto-power-cutting of the present invention, highly sensitive, can turn off rapidly and electric conduction welding machine, reduce electric energy loss.This control circuit low in energy consumption, use components and parts few, product cost is low.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the control circuit for electric welding machine auto-power-cutting of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, the control circuit for electric welding machine auto-power-cutting of the present invention, comprises double-gate K switch o, first transformer T1, second transformer T2, first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, 5th resistance R5, first polarity free capacitor CO1, second polarity free capacitor CO2, first polar capacitor CP1, second polar capacitor CP2, 3rd polar capacitor CP3, first relay K 1, second relay K 2, full bridge rectifier A, three terminal regulator W, NE555 chip, current transformer BL, first diode D1, second diode D2 and triode Q, current transformer BL are for responding to the electric current of the secondary coil of the first transformer T1, and the input of double-gate K switch o is electrically connected with city, first output of double-gate K switch o simultaneously with the first end of the first resistance R1, the first end of the first polarity free capacitor CO1, the first end of the first relay K 1, the first end of the normally opened contact K1-1 of the first relay K 1, the first input end of the second transformer T2 connects, second end of the first resistance R1 simultaneously with second end of the first polarity free capacitor CO1, second end of the normally opened contact K1-1 of the first relay K 1, the first input end of the first transformer T1 connects, second output of double-gate K switch o simultaneously with second input of the first transformer T1, second input of the second transformer T2, the first end of the normally opened contact K2-1 of the second relay K 2 connects, second end of the first relay K 1 is connected with second end of the normally opened contact K2-1 of the second relay K 2, the output of the second transformer T2 is connected with the input of full bridge rectifier A, the cathode output end of full bridge rectifier A is connected with the input of three terminal regulator W, the output of three terminal regulator W simultaneously with the positive pole of the first polar capacitor CP1, 4th pin of NE555 chip, the octal of NE555 chip, the first end of the second resistance R2 connects, first output of current transformer BL simultaneously with the negative pole of the first diode D1, the positive pole of the second polar capacitor CP2, the first end of the 4th resistance R4 connects, and the positive pole of the first diode D1 is connected with the first end of the 3rd resistance R3, and second end of the 4th resistance R4 is connected with the base stage of triode Q, with second end of the second resistance R2 while of the colelctor electrode of triode Q, the first end of the 5th resistance R5, the crus secunda of NE555 chip, 6th pin of NE555 chip connects, second end of the 5th resistance R5 is connected with the first end of the 3rd polar capacitor CP3, 5th pin of NE555 chip is connected with the first end of the second polarity free capacitor CO2, the tripod of NE555 chip simultaneously with the negative pole of the second diode D2, the first end of the second relay K 2 connects, the second end of the second relay K 2 simultaneously with the cathode output end of full bridge rectifier A, the earth terminal of three terminal regulator W, the negative pole of the first polar capacitor CP1, second output of current transformer BL, second end of the 3rd resistance R3, the negative pole of the second polar capacitor CP2, the emitter stage of triode Q, the negative pole of the 3rd polar capacitor CP3, first pin of NE555 chip, second end of the second polarity free capacitor CO2, the positive pole of the second diode D2 connects, and the output of the first transformer T1 is as the signal output part of control circuit.Wherein, the first transformer T1 is the transformer of electric welding machine, and the output of the first transformer T1 is connected with the electrode holder of electric welding machine and weldment.
Control circuit for electric welding machine auto-power-cutting of the present invention, current transformer BL, the first diode D1 and the 3rd resistance R3 form current detection circuit, second transformer T2, full-bridge rectifier A and three terminal regulator W form power circuit, and the 5th resistance R5, triode Q, the 3rd polar capacitor CP3, the second diode D2 and NE555 chip form delay circuit.During electric welding machine work, the secondary coil generation current of the first transformer T1, current transformer BL induced-current is higher than definite value, triode Q conducting, the tripod of NE555 chip exports high level, the second relay K 2 adhesive, the normally opened contact K2-1 of the second relay K 2 closes, first relay K 1 adhesive, the normally opened contact K1-1 of the first relay K 1 closes, and electric welding machine normally works.
Claims (1)
1. for a control circuit for electric welding machine auto-power-cutting, it is characterized in that: comprise double-gate switch, first transformer, second transformer, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, first polarity free capacitor, second polarity free capacitor, first polar capacitor, second polar capacitor, 3rd polar capacitor, first relay, second relay, full bridge rectifier, three terminal regulator, NE555 chip, current transformer, first diode, second diode and triode, described current transformer is for responding to the electric current of the secondary coil of the first transformer, and the input of described double-gate switch is electrically connected with city, the first output of described double-gate switch simultaneously with the first end of described first resistance, the first end of described first polarity free capacitor, the first end of described first relay, the first end of the normally opened contact of described first relay, the first input end of described second transformer connects, the second end of described first resistance simultaneously with the second end of described first polarity free capacitor, second end of the normally opened contact of described first relay, the first input end of described first transformer connects, the second output of described double-gate switch simultaneously with the second input of described first transformer, second input of described second transformer, the first end of the normally opened contact of described second relay connects, second end of described first relay is connected with the second end of the normally opened contact of described second relay, the output of described second transformer is connected with the input of described full bridge rectifier, the cathode output end of described full bridge rectifier is connected with the input of described three terminal regulator, the output of described three terminal regulator simultaneously with the positive pole of described first polar capacitor, 4th pin of described NE555 chip, the octal of described NE555 chip, the first end of described second resistance connects, the first output of described current transformer simultaneously with the negative pole of described first diode, the positive pole of described second polar capacitor, the first end of described 4th resistance connects, the positive pole of described first diode is connected with the first end of described 3rd resistance, second end of described 4th resistance is connected with the base stage of described triode, the colelctor electrode of described triode simultaneously with the second end of described second resistance, the first end of described 5th resistance, the crus secunda of described NE555 chip, 6th pin of described NE555 chip connects, second end of described 5th resistance is connected with the first end of described 3rd polar capacitor, 5th pin of described NE555 chip is connected with the first end of described second polarity free capacitor, the tripod of described NE555 chip simultaneously with the negative pole of described second diode, the first end of described second relay connects, the second end of described second relay simultaneously with the cathode output end of described full bridge rectifier, the earth terminal of described three terminal regulator, the negative pole of described first polar capacitor, second output of described current transformer, second end of described 3rd resistance, the negative pole of described second polar capacitor, the emitter stage of described triode, the negative pole of described 3rd polar capacitor, first pin of described NE555 chip, second end of described second polarity free capacitor, the positive pole of described second diode connects, and the output of described first transformer is as the signal output part of described control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310652123.9A CN104668834A (en) | 2013-12-03 | 2013-12-03 | Control circuit for automatic power-on and power-off of electric welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310652123.9A CN104668834A (en) | 2013-12-03 | 2013-12-03 | Control circuit for automatic power-on and power-off of electric welder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104668834A true CN104668834A (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310652123.9A Pending CN104668834A (en) | 2013-12-03 | 2013-12-03 | Control circuit for automatic power-on and power-off of electric welder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104668834A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689930A (en) * | 2016-03-25 | 2016-06-22 | 国网山东省电力公司滨州市滨城区供电公司 | Welding device for power line construction |
-
2013
- 2013-12-03 CN CN201310652123.9A patent/CN104668834A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689930A (en) * | 2016-03-25 | 2016-06-22 | 国网山东省电力公司滨州市滨城区供电公司 | Welding device for power line construction |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |