CN104668829A - No-load APO (Automatic Power Off) circuit of electric welding machine - Google Patents
No-load APO (Automatic Power Off) circuit of electric welding machine Download PDFInfo
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- CN104668829A CN104668829A CN201310639078.3A CN201310639078A CN104668829A CN 104668829 A CN104668829 A CN 104668829A CN 201310639078 A CN201310639078 A CN 201310639078A CN 104668829 A CN104668829 A CN 104668829A
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- transformer
- contactor
- circuit
- triode
- welding machine
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Generation Of Surge Voltage And Current (AREA)
Abstract
The invention discloses a no-load APO (Automatic Power Off) circuit of an electric welding machine. The APO circuit comprises a double-gate switch, a first transformer, a second transformer, a current transformer, a first capacitor, a second capacitor, a first resistor, a second resistor, a potentiometer, a relay, an AC (Alternating Current) contactor, a first audion, a second audion, a first diode and a second diode, wherein a current detection amplifying circuit consists of the current transformer, the first audion and the second audion, and a current on-off control circuit consists of the relay, the AC contactor and the second capacitor. According to the no-load APO circuit of the electric welding machine provided by the invention, the power supply can be automatically cut off after the electric welding machine stops operating for a period of time, the operating flow can be simplified, and the working efficiency can be improved; furthermore, the dangerous accidents of the powered electric welding machine which may be caused can be prevented by automatically powering off the circuit when an operator forgets turning off the main power of the electric welding machine.
Description
Technical field
The present invention relates to a kind of electric welding machine power-down circuit, particularly relate to a kind of electric welder no-load automatic power-off circuit.
Background technology
Electric welding machine is a kind of powerful equipment, and when electric welding machine does not work, the electric welding machine of energising easily causes the waste of electric energy, also possibility initiation potential accident, general electric welding machine power-down circuit, needs to stir the power-off of cut-off switch ability, easy not during use, the efficiency of work is not high.
Summary of the invention
Object of the present invention is just to provide a kind of electric welder no-load automatic power-off circuit to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
Electric welder no-load automatic power-off circuit of the present invention, comprise double-gate switch, first transformer, second transformer, current transformer, first electric capacity, second electric capacity, first resistance, second resistance, potentiometer, relay, A.C. contactor, first triode, second triode, first diode and the second diode, described current transformer and described second transformer mutual inductance, the input of described double-gate switch is connected with alternating current, first output of described double-gate switch respectively with the first end of described A.C. contactor, the first end of the first contact of described A.C. contactor is connected with the first end of the primary coil of described first transformer, second end of the first contact of described A.C. contactor is connected with the first end of the primary coil of described second transformer, second output of described double-gate switch respectively with the second end of the primary coil of described second transformer, the first end of the contact of described relay is connected with the second end of the primary coil of described first transformer, second end of the contact of described relay is connected with the second end of described A.C. contactor, the first end of the first secondary coil of described first transformer is connected with the positive pole of described first diode, second end of the first secondary coil of described first transformer is connected with the first end of described first electric capacity and the emitter stage of described first triode respectively, the negative pole of described first diode respectively with the second end of described first electric capacity, the first end of described relay, the emitter stage of described second triode, the first end of described second electric capacity is connected with the first output of described current transformer, second end of described relay is connected with the colelctor electrode of described first triode, the base stage of described first triode is connected with the first end of described first resistance, second end of described first resistance is connected with the colelctor electrode of described second triode, the base stage of described second triode is connected with the first end of described second resistance, second end of described second resistance is connected with the first end of described potentiometer, second end of described potentiometer respectively with the sliding end of described potentiometer, second end of described second electric capacity is connected with the positive pole of described second diode, the negative pole of described second diode is connected with the second output of described current transformer, the first end of the second subprime coil of described first transformer is connected with the first end of the second contact of described A.C. contactor, second end of the second contact of described A.C. contactor is connected with the first end of the secondary coil of described second transformer and as the first output of described automatic power-off circuit, second end of the second subprime coil of described first transformer is connected with the second end of the secondary coil of described second transformer and as the second output of described automatic power-off circuit.
Beneficial effect of the present invention is:
Electric welder no-load automatic power-off circuit of the present invention, automatically power supply can be cut off after electric welding machine quits work a period of time, simplify operating process, the very efficiency of high workload, when operator forgets the general supply of closing electric welding machine, the peril that automatic power-off circuit can avoid charged electric welding machine to cause.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of electric welder no-load automatic power-off circuit 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, electric welder no-load automatic power-off circuit of the present invention, comprise double-gate switch Q, first transformer T1, second transformer T2, current transformer TA, first electric capacity C1, second electric capacity C2, first resistance R1, second resistance R2, potentiometer RP, relay K, A.C. contactor KM, first triode VT1, second triode VT2, first diode VD1 and the second diode VD2, current transformer TA and the second transformer T2 mutual inductance, the input of double-gate switch Q is connected with alternating current, first output of double-gate switch Q respectively with the first end of A.C. contactor KM, the first end of first contact of A.C. contactor KM is connected with the first end of the primary coil of the first transformer T1, second end of first contact of A.C. contactor KM is connected with the first end of the primary coil of the second transformer T2, second output of double-gate switch Q respectively with the second end of the primary coil of the second transformer T2, the first end of the contact of relay K is connected with the second end of the primary coil of the first transformer T1, second end of the contact of relay K is connected with second end of A.C. contactor KM, the first end of first secondary coil of the first transformer T1 is connected with the positive pole of the first diode VD1, second end of first secondary coil of the first transformer T1 is connected with the first end of the first electric capacity C1 and the emitter stage of the first triode VT1 respectively, the negative pole of the first diode VD1 respectively with second end of the first electric capacity C1, the first end of relay K, the emitter stage of the second triode VT2, first output of the first end summation current transformer TA of the second electric capacity C2 connects, second end of relay K is connected with the colelctor electrode of the first triode VT1, the base stage of the first triode VT1 is connected with the first end of the first resistance R1, second end of the first resistance R1 is connected with the colelctor electrode of the second triode VT2, the base stage of the second triode VT2 is connected with the first end of the second resistance R2, second end of the second resistance R2 is connected with the first end of potentiometer RP, second end of potentiometer RP respectively with the sliding end of potentiometer RP, second end of the second electric capacity C2 is connected with the positive pole of the second diode VT2, the negative pole of the second diode VT2 is connected with second output of current transformer TA, the first end of the second subprime coil of the first transformer T1 is connected with the first end of second contact of A.C. contactor KM, second end of second contact of A.C. contactor KM is connected with the first end of the secondary coil of the second transformer T2 and as the first output of automatic power-off circuit, second end of the second subprime coil of the first transformer T1 is connected with the second end of the secondary coil of the second transformer T2 and as the second output of automatic power-off circuit.Occur in welding process the short time stop weldering time, due to the time-lag action of the second electric capacity C2, first triode VT1 and the second triode VT2 appoints and so keeps conducting state, if stop the weldering time to have exceeded setting-up time, i.e. the second electric capacity C2 discharge off, then the first triode VT1 and the second triode VT2 ends, relay K and A.C. contactor KM discharge, namely relay K contact K-1 disconnect, A.C. contactor KM first contact KM-1 disconnect and A.C. contactor KM the second contact KM-2 close, electric welding machine is now in power-off energy saving state.
Claims (1)
1. an electric welder no-load automatic power-off circuit, it is characterized in that: comprise double-gate switch, first transformer, second transformer, current transformer, first electric capacity, second electric capacity, first resistance, second resistance, potentiometer, relay, A.C. contactor, first triode, second triode, first diode and the second diode, described current transformer and described second transformer mutual inductance, the input of described double-gate switch is connected with alternating current, first output of described double-gate switch respectively with the first end of described A.C. contactor, the first end of the first contact of described A.C. contactor is connected with the first end of the primary coil of described first transformer, second end of the first contact of described A.C. contactor is connected with the first end of the primary coil of described second transformer, second output of described double-gate switch respectively with the second end of the primary coil of described second transformer, the first end of the contact of described relay is connected with the second end of the primary coil of described first transformer, second end of the contact of described relay is connected with the second end of described A.C. contactor, the first end of the first secondary coil of described first transformer is connected with the positive pole of described first diode, second end of the first secondary coil of described first transformer is connected with the first end of described first electric capacity and the emitter stage of described first triode respectively, the negative pole of described first diode respectively with the second end of described first electric capacity, the first end of described relay, the emitter stage of described second triode, the first end of described second electric capacity is connected with the first output of described current transformer, second end of described relay is connected with the colelctor electrode of described first triode, the base stage of described first triode is connected with the first end of described first resistance, second end of described first resistance is connected with the colelctor electrode of described second triode, the base stage of described second triode is connected with the first end of described second resistance, second end of described second resistance is connected with the first end of described potentiometer, second end of described potentiometer respectively with the sliding end of described potentiometer, second end of described second electric capacity is connected with the positive pole of described second diode, the negative pole of described second diode is connected with the second output of described current transformer, the first end of the second subprime coil of described first transformer is connected with the first end of the second contact of described A.C. contactor, second end of the second contact of described A.C. contactor is connected with the first end of the secondary coil of described second transformer and as the first output of described automatic power-off circuit, second end of the second subprime coil of described first transformer is connected with the second end of the secondary coil of described second transformer and as the second output of described automatic power-off circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310639078.3A CN104668829A (en) | 2013-11-30 | 2013-11-30 | No-load APO (Automatic Power Off) circuit of electric welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310639078.3A CN104668829A (en) | 2013-11-30 | 2013-11-30 | No-load APO (Automatic Power Off) circuit of electric welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104668829A true CN104668829A (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310639078.3A Pending CN104668829A (en) | 2013-11-30 | 2013-11-30 | No-load APO (Automatic Power Off) circuit of electric welding machine |
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| Country | Link |
|---|---|
| CN (1) | CN104668829A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006799A (en) * | 2015-08-10 | 2015-10-28 | 安徽江淮汽车股份有限公司 | Safety power-off device in equipment no-load state and control method thereof |
| CN108788574A (en) * | 2018-09-11 | 2018-11-13 | 深圳市川瑞贝科技有限公司 | Electric welding machine automatic shutdown circuitry and automatic shutdown method |
-
2013
- 2013-11-30 CN CN201310639078.3A patent/CN104668829A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006799A (en) * | 2015-08-10 | 2015-10-28 | 安徽江淮汽车股份有限公司 | Safety power-off device in equipment no-load state and control method thereof |
| CN105006799B (en) * | 2015-08-10 | 2018-10-30 | 安徽江淮汽车集团股份有限公司 | A kind of equipment zero load safety power-off device and its control method |
| CN108788574A (en) * | 2018-09-11 | 2018-11-13 | 深圳市川瑞贝科技有限公司 | Electric welding machine automatic shutdown circuitry and automatic shutdown method |
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| C06 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |