CN2437445Y

CN2437445Y - Multifunctional arc welder

Info

Publication number: CN2437445Y
Application number: CN 00212849
Authority: CN
Inventors: 左长智; 赵波; 康成明
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-07
Filing date: 2000-08-07
Publication date: 2001-07-04
Anticipated expiration: 2010-08-07

Abstract

The utility model relates to a multifunctional arc welder. A power supply a polarity-reversing switch, a wiring terminal of a welding holder and a ground terminal are arranged on the front surface of a machine frame. An operating current adjusting knob is arranged on the lateral surface of the machine frame. A welding transformer is arranged on one inner side of the machine frame. A high voltage transformer is in front of the welding transformer. A high frequency and high voltage transformer is placed at the point of the same side of the welding transformer and the high voltage transformer. An arc striking control device is assembled on the other inner side of the machine frame. A thyristor and a diode which are arranged side by side are contiguous with the arc striking control device. The utility model has the advantages of multifunction, low power consumption and a long service life.

Description

Multifunctional arc welder

The utility model relates to a kind of AC ﹠ D. C. arc welding machine.

Existing AC ﹠ D. C. arc welding machine work energy consumption height, service life is short, function singleness.

It is many that the purpose of this utility model provides a kind of function, and power consumption is low, the AC ﹠ D. C. arc welding machine of long service life.

Main technical schemes of the present utility model is: have power supply and polarity reversing switch, electrode holder binding post, earth terminal on the front of frame, on the side of frame, has the operating current adjusting knob, side in frame inside has welding transformer, in its front is high-tension transformer, high frequency high voltage transformer is being laid at place, same side at welding transformer and high-tension transformer, opposite side in frame inside is equipped with arc strike control device, and the IGCT that is discharging, diode and arc strike control device are adjacent.

Operation principle of the present utility model is: it includes welding transformer, high-frequency and high-voltage arc ignition circuit, arc ignition control circuit and welding current regulating circuit.

The utility model is compared with prior art and is had following advantage:

1, owing to adopt the high-frequency and high-voltage striking, thereby reduce the floating voltage of welding transformer, thereby saved copper cash and silicon steel sheet, and energy-conservation.

2, owing to adopt arc ignition control circuit, shorten the striking time, the service life of having improved equipment.

3, because welding current can carry out meticulous step-less adjustment significantly, guaranteed welding quality.

4, this machine can be done to exchange and also can do the DC welder use.

Concrete structure of the present utility model is provided by the following drawings.

Fig. 1 is a stereochemical structure partial cutaway diagrammatic sketch of the present utility model;

Fig. 2 is a fundamental diagram of the present utility model.

Below in conjunction with accompanying drawing concrete structure of the present utility model is further described.

As shown in Figure 1, on the front of frame 1, have power supply and polarity reversing switch 10, electrode holder binding post 9, earth terminal 11, on the side of frame 1, has operating current adjusting knob 7, side in frame 1 inside has welding transformer 2, in its front is high-tension transformer 4, high frequency high voltage transformer 3 is being laid at place, same side at welding transformer 2 and high-tension transformer 4, opposite side in frame 1 inside is equipped with arc strike control device 6, and the IGCT 5 that is discharging, diode 8 are adjacent with arc strike control device 6.

As shown in Figure 2, operation principle circuit diagram of the present utility model is divided into welding transformer circuit 15, high-frequency and high-voltage arc ignition circuit 14, arc ignition control circuit 13 and welding current regulating circuit 12.At first connect the 220V AC power during work, Push switch SW makes the T2T3 conducting, and this moment, indicator lamp L was bright, the relay J adhesive, thus give high-tension transformer B4 power supply, its secondary high pressure that produced.This high pressure is added in the two ends of SD F, produces spark thereby puncture air-gap.Consequent a series of frequency spectrum high-frequency energy.This energy arrives on the primary winding of high frequency high voltage transformer B5 by capacitor C 13, has produced ten thousand volts high-frequency and high-voltage through induction on its secondary coil, and this high-frequency and high-voltage is delivered to by C12 and carried out striking between workpiece and welding rod.

After the striking, once after stable foundation of operating current and the normal welding of beginning, electric current in the primary winding of welding transformer B0 is greater than no-load current at this moment, through transformer B1 with this signal through D1, D2, D3 and D8 rectification after potentiometer W1 delivers to T1, because the T1 bypass, T2, T3 do not work, and relay J discharges, cut off the power supply of high-tension transformer B4, thereby stopped striking.The working power of this circuit is obtained after the V1 voltage stabilizing by transformer B2 and A1～A4 rectification.The adjusting of welding current is to rely on regulator potentiometer W2, realizes by the angle of flow of double base diode change IGCT.

When this machine uses as DC arc welder, charger and brush plating machine, promptly the bridge rectifier of being made up of commutation diode D01～D04 inserts the secondary L2 of welding transformer by change-over switch, by the change of switch positions, can obtain direct current and carry out reversal.

Claims

1, a kind of multifunctional arc welder, it mainly comprises frame, power supply, polarity reversing switch, electrode holder binding post (9), earth terminal (11), welding transformer (2), it is characterized in that: on the front of frame (1), have power supply and polarity reversing switch (10), electrode holder binding post (9), earth terminal (11), on the side of frame (1), has operating current adjusting knob (7), a side inner in frame (1) has welding transformer (2), in its front is high-tension transformer (4), high frequency high voltage transformer (3) is being laid at place, same side at welding transformer (2) and high-tension transformer (4), the opposite side inner in frame (1) is equipped with arc strike control device (6), and the IGCT that is discharging (5), diode (8) is adjacent with arc strike control device (6).