CN2700042Y - Capacitor energy storage type welding machine - Google Patents
Capacitor energy storage type welding machine Download PDFInfo
- Publication number
- CN2700042Y CN2700042Y CN 200420043978 CN200420043978U CN2700042Y CN 2700042 Y CN2700042 Y CN 2700042Y CN 200420043978 CN200420043978 CN 200420043978 CN 200420043978 U CN200420043978 U CN 200420043978U CN 2700042 Y CN2700042 Y CN 2700042Y
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- circuit
- capacitor
- welding machine
- energy storage
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Abstract
The utility model discloses a capacitor energy storage type welding machine, which is characterized in that the capacitor energy storage type welding machine mainly comprises a rectification circuit, a switching circuit, a capacity charging circuit, a thyristor TG, an inductor L, and a control circuit. The capacity charging circuit consists of a resistor R, and a capacitor C. The switching circuit is connected between the current output end of the rectification circuit and the resistor R. The capacitor C is connected between the resistor R and the current input end of the rectification circuit. The thyristor TG is connected between the inductor L and the discharging end of the capacity charging circuit. The two signal output ends of the control circuit are respectively connected with the electrical signal input end of the switching circuit and the trigger electrode of the thyristor TG. Compared with the prior art, the utility model has the advantages of low manufacturing cost, few energy loss in conversion, and controllable discharge time.
Description
Technical field:
The utility model relates to a kind of electric welding machine.
Background technology:
As shown in Figure 1, existing capacitance energy storage type welding machine is to be made of rectification circuit 1, on-off circuit 2, capacitor charging circuit 3, thyristor circuit 4, transformer 5, control circuit 6, thyristor circuit 4 is made of four IGCT Q1, Q2, Q3, Q4, parallel with one another again after per two IGCT Q1, Q4 and Q3, the Q2 series connection, be connected the two ends of the capacitor C of capacitor charging circuit 3 then, two inputs of transformer 5 are connected between two IGCT Q1, Q4 of two pairs of series connection and between Q2, Q3.During work, rectification circuit is a high-voltage direct-current with the high voltage AC rectification, control circuit gauge tap circuit turn-on, and thyristor circuit opens circuit, the capacitor charging circuit charging, in the time of need carrying out welding job, control circuit gauge tap circuit breaker, simultaneously, control two couples of IGCT Q1, Q4 and Q2, Q3 and take turns conducting, by the transformation of transformer, high voltage, low current that capacitor charging circuit 3 is emitted convert low-voltage, high electric current to, pad to workpiece sparks, and makes the pad moment high temperature welding of workpiece.Owing to used transformer, for fear of polarity effect, primary must be taken turns conducting, like this, just must adopt two pairs of four IGCTs, like this, increased the quantity of IGCT, and, require IGCT that very high withstand voltage properties (greater than 1000V) is arranged, not only promote the cost of single IGCT, and promoted a cost that becomes individual device significantly; Owing to be high-voltage charging, need high voltage bearing electric capacity, and high voltage bearing electric capacity cost is very high, makes the cost of whole device also very high; In addition, welding transformer is unsaturated transformer, and efficient is low, and energy loss is big in the transfer process, and can not control discharge time.
Summary of the invention:
Goal of the invention of the present utility model is to provide the capacitance energy storage type welding machine that energy loss is few, discharge time is controlled in a kind of that need not use a plurality of IGCTs and less demanding to the withstand voltage properties of IGCT, transfer process.
The utility model is to realize like this, mainly constitute by rectification circuit, on-off circuit, capacitor charging circuit, IGCT TG, inductance L, control circuit, capacitor charging circuit is made of resistance R, capacitor C, on-off circuit is connected between the current output terminal and resistance R of rectification circuit, capacitor C is connected between the current input terminal of resistance R and rectification circuit, IGCT TG is connected between inductance L and capacitor charging circuit discharge end, and two signal output parts of control circuit link to each other with the electric signal input end and the IGCT TG trigger electrode of on-off circuit respectively.During work, control circuit gauge tap open circuit, IGCT TG opens circuit, and the low-voltage and high-current AC power becomes the low-voltage and high-current direct current after the rectification circuit rectification, and charge to capacitor charging circuit, after capacitor charging circuit is full of electricity, control circuit gauge tap circuit breaker, IGCT TG open circuit, the direct current of low-voltage, high electric current is under the inductance L effect, discharge forms high current discharge in short time, makes the pad moment high temperature welding of workpiece.Because the inductance value of inductance can be regulated by regulating the position of inductor iron core in inductance coil, therefore, the current discharge time is adjustable, and, because only need a low-voltage IGCT TG, the cost of inductance is low more than transformer, the energy consumption of inductance is low more than transformer also, therefore, the whole cost of device is lower than prior art.
Here, inductance L is made of inductance coil, the ferrite core that is movably arranged in the inductance coil.In order to realize automatic control, also be provided with and drive the actuating unit that ferrite core moves, the control signal output of control device links to each other with the electric signal input end of actuating unit.During work, according to workpiece character,, drive ferrite core and move to appropriate position in the inductance coil, so that meet the requirements from the size of current and the discharge time of inductive current output output by the action of control device control actuating unit.
The utility model compared with the prior art since need not use a plurality of IGCTs TG's and less demanding to the withstand voltage properties of IGCT TG and electric capacity, therefore have the advantage that energy loss is few in low cost of manufacture, the transfer process, discharge time is controlled.
Description of drawings:
Fig. 1 is a circuit diagram of the present utility model;
Fig. 2 is the structural representation of prior art;
Fig. 3 is the structural representation of inductance of the present utility model.
The specific embodiment:
Now in conjunction with the accompanying drawings and embodiments the utility model is described in further detail:
As shown in the figure; the utility model is mainly by rectification circuit 1; on-off circuit 2; capacitor charging circuit 3; IGCT TG; inductance L; control circuit 4 constitutes; capacitor charging circuit 3 is by resistance R; capacitor C constitutes; on-off circuit 2 is connected between the current output terminal and resistance R of rectification circuit 1; capacitor C is connected between the current input terminal of resistance R and rectification circuit 1; IGCT TG is connected between inductance L and capacitor charging circuit 3 discharge ends; two signal output parts of control circuit 4 link to each other with the electric signal input end and the IGCT TG trigger electrode of on-off circuit 2 respectively; inductance L is by inductance coil 5; be movably arranged on the ferrite core 6 in the inductance coil 5; drive actuating unit 7 formations that ferrite core 6 moves; inductance coil 5 is coated with epoxy resin 8; avoid extraneous injury with protection inductance coil 5; ferrite core 6 is made of aluminium core 9 and outer field ferrite 10, and the control signal output of control device 4 links to each other with the electric signal input end of actuating unit 7.
Claims (3)
1, a kind of capacitance energy storage type welding machine, it is characterized in that mainly constituting by rectification circuit, on-off circuit, capacitor charging circuit, IGCT TG, inductance L, control circuit, capacitor charging circuit is made of resistance R, capacitor C, on-off circuit is connected between the current output terminal and resistance R of rectification circuit, capacitor C is connected between the current input terminal of resistance R and rectification circuit, IGCT TG is connected between inductance L and capacitor charging circuit discharge end, and two signal output parts of control circuit link to each other with the electric signal input end and the IGCT TG trigger electrode of on-off circuit respectively.
2, capacitance energy storage type welding machine according to claim 1 is characterized in that inductance L is made of inductance coil, the ferrite core that is movably arranged in the inductance coil.
3, capacitance energy storage type welding machine according to claim 2 is characterized in that also being provided with the actuating unit that the drive ferrite core moves, and the control signal output of control device links to each other with the electric signal input end of actuating unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420043978 CN2700042Y (en) | 2004-03-22 | 2004-03-22 | Capacitor energy storage type welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420043978 CN2700042Y (en) | 2004-03-22 | 2004-03-22 | Capacitor energy storage type welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2700042Y true CN2700042Y (en) | 2005-05-18 |
Family
ID=34775097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420043978 Expired - Fee Related CN2700042Y (en) | 2004-03-22 | 2004-03-22 | Capacitor energy storage type welding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2700042Y (en) |
-
2004
- 2004-03-22 CN CN 200420043978 patent/CN2700042Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |