CN2930941Y - Electric welding machine with idling auto-power-off device - Google Patents
Electric welding machine with idling auto-power-off device Download PDFInfo
- Publication number
- CN2930941Y CN2930941Y CN 200520123469 CN200520123469U CN2930941Y CN 2930941 Y CN2930941 Y CN 2930941Y CN 200520123469 CN200520123469 CN 200520123469 CN 200520123469 U CN200520123469 U CN 200520123469U CN 2930941 Y CN2930941 Y CN 2930941Y
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- welding machine
- electric welding
- transformer
- contactor
- coil
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Abstract
The utility model belongs to an electric welding machine with no-load automatic power cutting-off device, comprising a transformer of the electric welding machine, and the primary side coil of the transformer of the electric welding machine is connected with a voltage control circuit. The voltage control circuit comprises an AC contactor, a time relay and a voltage relay. The normally opened contact of the AC contactor parallel connected with a bypass capacitor is in serial connected with the primary side coil of the transformer connected with a power switch. The normally opened contact of the voltage relay is in serial connected with the coil of the time relay. The coil of the AC contactor is in serial connected with the normally closed contact of the time relay. Two above series circuit is parallel connected with the primary side coil of the transformer and forms the control circuit. The normally closed contact of the AC contactor is in serial connected with the coil of the voltage relay and then parallel connected with the secondary side coil of the transformer. The beneficial effects of the utility model are: the installing circuit is simple and stable; the no-load current is reduced during the no-load time of the electric welding machine; and the power factor of the line is also improved; the no-load automatic power cutting-off is realized.
Description
Technical field
The utility model belongs to a kind of electric welding machine, relates in particular to a kind of electric welding machine with unloaded auto-power-off device.
Background technology
The application of electric welding machine is in industrial and agricultural production and the extensive use of house ornamentation industry.Because electric welding machine remote-controlled operation and work high above the ground often. the welding of discontinuity is the maximum characteristics of electric welding machine use especially.In order to reduce the power factor (PF) of reactive loss saves energy and raising power supply network, people are at development band loaded energy-saving device electric welding machine.Someone once attempted utilizing the mixing big electric capacity of electric power non-polar oil to seal in the electric welding machine primary coil, utilized electric capacity to reduce the inflow line loop current, and the size of electric capacity is directly connected to power savings.Electric capacity is little can't start or start at all difficulty, and electric capacity is big, and electric energy is poor.Also, cut off the power supply automatically when realizing electric welder no-load by adopting bistable circuit and not having the control circuit that the stream circuits for triggering are formed.Because adopt transistor unit, parameter instability, result of use are not good, do not obtain promoting.
The utility model content
The purpose of this utility model is to remedy the defective of above-mentioned technology, and a kind of electric welding machine with unloaded auto-power-off device is provided, and it is simple, stable that it installs circuit, cuts off the power supply automatically when really having realized electric welder no-load.
For achieving the above object, by the following technical solutions: a kind of electric welding machine with unloaded auto-power-off device, comprise it is characterized in that the transformer of electric welding machine: the transformer first siding ring of electric welding machine connects voltage control circuit.
Described voltage control circuit, comprise A.C. contactor, the time relay, voltage relay, the described A.C. contactor normally opened contact that is parallel with shunt capacitance is connected with the transformer first siding ring that is connected with power switch, the coil tandem of the described voltage relay normally opened contact and the time relay, the coil of described A.C. contactor is connected with the normally-closed contact of the time relay, above-mentioned two series loops and transformer first siding ring compose in parallel control circuit, and described A.C. contactor normally-closed contact is connected with the voltage relay coil afterwards and the Circuit Fault on Secondary Transformer coils from parallel connection of coils.
Described A.C. contactor normally-closed contact variable potentiometer in parallel.
The beneficial effects of the utility model: it is simple, stable that it installs circuit, reduced no-load current when electric welder no-load, also improved the power factor of circuit, cuts off the power supply automatically when really having realized electric welder no-load.
Description of drawings
Accompanying drawing is a circuit diagram of the present utility model.
Among the figure: 1 transformer, 2 A.C. contactors, 2-1 A.C. contactor normally opened contact, the coil of 2-2 A.C. contactor, 2-3 A.C. contactor normally-closed contact, 3 time relays, the normally-closed contact of the 3-1 time relay, the coil of the 3-2 time relay, 4 voltage relays, 4-1 voltage relay normally opened contact, 4-2 voltage relay coil, 5 variable potentiometers, 6 shunt capacitances.
The specific embodiment
As shown in the figure, a kind of electric welding machine with unloaded auto-power-off device comprises the transformer 1 of electric welding machine, and the transformer first siding ring 1-1 of electric welding machine connects voltage control circuit.Described voltage control circuit, comprise A.C. contactor 2, the time relay 3, voltage relay 4, the described A.C. contactor normally opened contact 2-1 that is parallel with shunt capacitance 6 connects with the transformer first siding ring that is connected with power switch, described voltage relay normally opened contact 4-1 is connected in series with the coil 3-2 of the time relay, the coil 2-2 of described A.C. contactor connects with the normally-closed contact 3-1 of the time relay, above-mentioned two series loops and transformer first siding ring compose in parallel control circuit, and be in parallel with transformer secondary lateral coil 1-2 after described A.C. contactor normally-closed contact 2-3 connects with voltage relay coil 4-2.Described A.C. contactor normally-closed contact 2-3 variable potentiometer 5 in parallel.Operation principle: power turn-on K switch, ac contactor coil energising, its closing of contact, electric welding machine energising.Power transformer, soldering turret (not shown) and working substance (not shown) are formed closed circuit at this moment, utilize the decline external characteristics of electric welding machine, and electric welding machine can weld.After stopping welding, voltage relay YJ work, the normally opened contact closure, turn-on time relay K T, its normally-closed contact time-delay is disconnected, A.C. contactor is because of the dead electricity deenergization, and only provide weak current by feed-through capacitor to electric welding machine this moment, in order to keep electric welding machine first siding ring both end voltage.When recovering welding, the second siding ring short circuit, the voltage relay decompression is opened normally opened contact, and the time relay makes the instantaneous closure of normally-closed contact because of dead electricity, and A.C. contactor is connected power supply once more, and electric welding machine can weld.The utility model utilizes electric welding machine second siding ring Control of Voltage voltage relay, cuts off the power supply automatically when making electric welder no-load; Utilize striking voltage pressure drop principle that electric welding machine is restarted.The utility model is applicable to the AC-DC welder of all size.A.C. contactor is selected JC10-20, time relay ST3, voltage relay 4DJ-30 for use.
The above only is preferred embodiment of the present utility model, is not structure of the present utility model is done any pro forma restriction.Every foundation technical spirit of the present utility model all still belongs in the scope of the technical solution of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (3)
1, a kind of electric welding machine with unloaded auto-power-off device, comprise it is characterized in that the transformer of electric welding machine: the transformer first siding ring of electric welding machine connects voltage control circuit.
2, the electric welding machine of the unloaded auto-power-off device of band according to claim 1, it is characterized in that: described voltage control circuit, comprise A.C. contactor, the time relay, voltage relay, the described A.C. contactor normally opened contact that is parallel with shunt capacitance is connected with the transformer first siding ring that is connected with power switch, the coil tandem of the described voltage relay normally opened contact and the time relay, the coil of described A.C. contactor is connected with the normally-closed contact of the time relay, above-mentioned two series loops and transformer first siding ring compose in parallel control circuit, and described A.C. contactor normally-closed contact is connected with the voltage relay coil afterwards and the Circuit Fault on Secondary Transformer coils from parallel connection of coils.
3, the electric welding machine of the unloaded auto-power-off device of band according to claim 1 is characterized in that: described A.C. contactor normally-closed contact variable potentiometer in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520123469 CN2930941Y (en) | 2005-11-29 | 2005-11-29 | Electric welding machine with idling auto-power-off device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520123469 CN2930941Y (en) | 2005-11-29 | 2005-11-29 | Electric welding machine with idling auto-power-off device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2930941Y true CN2930941Y (en) | 2007-08-08 |
Family
ID=38347441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520123469 Expired - Fee Related CN2930941Y (en) | 2005-11-29 | 2005-11-29 | Electric welding machine with idling auto-power-off device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2930941Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513680A (en) * | 2011-12-02 | 2012-06-27 | 贵州黎阳航空动力有限公司 | Device for preventing welding electrode of electric-resistance seam-welding machine from being electrified and uplifted |
| CN102928753A (en) * | 2012-11-12 | 2013-02-13 | 小原(南京)机电有限公司 | Inverter welding machine middle frequency insulation detection device |
| CN103949753A (en) * | 2014-05-13 | 2014-07-30 | 国家电网公司 | Safe and energy-saving electric welding machine control circuit system |
| CN105689865A (en) * | 2014-11-27 | 2016-06-22 | 成都创客之家科技有限公司 | Electric welding machine |
| CN109434249A (en) * | 2018-12-08 | 2019-03-08 | 郑州工业应用技术学院 | A kind of electric welder no-load dropping equipment |
-
2005
- 2005-11-29 CN CN 200520123469 patent/CN2930941Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513680A (en) * | 2011-12-02 | 2012-06-27 | 贵州黎阳航空动力有限公司 | Device for preventing welding electrode of electric-resistance seam-welding machine from being electrified and uplifted |
| CN102513680B (en) * | 2011-12-02 | 2014-04-16 | 贵州黎阳航空动力有限公司 | Device for preventing welding electrode of electric-resistance seam-welding machine from being electrified and uplifted |
| CN102928753A (en) * | 2012-11-12 | 2013-02-13 | 小原(南京)机电有限公司 | Inverter welding machine middle frequency insulation detection device |
| CN103949753A (en) * | 2014-05-13 | 2014-07-30 | 国家电网公司 | Safe and energy-saving electric welding machine control circuit system |
| CN105689865A (en) * | 2014-11-27 | 2016-06-22 | 成都创客之家科技有限公司 | Electric welding machine |
| CN109434249A (en) * | 2018-12-08 | 2019-03-08 | 郑州工业应用技术学院 | A kind of electric welder no-load dropping equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070808 Termination date: 20091229 |