Energy-storage arc pulling type spindle welding machine

Abstract

The energy-storing arc type stud welding machine includes a casing, a transformer, a control panel, a welding gun and an inner circuit comprising electric elements. The inner circuit includes a welding gun circuit, a rectifying and charging circuit, a discharging circuit, a control module and an energy storing device. The discharging circuit includes the normally closed contact of the first relay; the energy storing device has super capacitor, which constitutes the charging circuit and the discharging circuit together which other parts; and the control module constitutes the control loop together with the rectifying and charging circuit and the super capacitor. Compared with available technology, the present invention has the advantages of small size, light weight, high welding quality, capacity of connecting external capacitor and low cost.

Description

technical field [0001] The invention relates to a welding machine, in particular to an energy storage drawn arc stud welding machine, which belongs to the field of welding technology in the Ministry of Operations and Transportation. Background technique [0002] Stud welding is a welding method that vertically welds metal studs or similar other metal fasteners (bolts, nails, etc.) to another workpiece (usually a plate). Stud welding can save drilling and tapping instead Threaded connection or riveting, stud welding has been widely used in automobile, shipbuilding, locomotive, aviation and other industries after World War II. Known stud welding machine has two big classes, and a class is the energy-storage type stud welding machine of electric capacity as welding power, and its advantage is can use small current such as 220V lighting electricity, electric energy is quickly stored in the capacitor (J =CV 2 / 2, J is the energy Joule, C is the capacitance F, V is the energy st...

AI Technical Summary

Problems solved by technology

[0003] The other type is a drawn arc stud welding machine with a transformer as the welding power. It uses an arc welding rectifier as a power source for welding. Its advantage is that it can weld load-bearing studs with a thickness of more than 3mm. The arc of the welding machine is formed by short-circuiting the stud and the base metal through the welding torch and quickly lifting it, so the welding current is much larger than that of ordinary covered electrode arc welding (A=D×100, D is the diameter of the stud) generally as long as Hundreds of amps to thousands of amps, so the capacity of the welding transformer and external power supply of the welding machine must be large enough, which will inevitably increase the weight and volume of the product. For example, a 1200A stud welding machine weighs 170 kg, and a 3000A welding machine weighs It can reach 370 kg, and it is very difficult to move on site, especially in the high-rise construction of the construction industry. At the same time, it consumes a lot of non-ferrous metals, the manufacturing cost is high, and the wiring is complicated. Because it needs three-phase power to provide power, it is not suitable for general city power. 220V cannot be used directly, further increasing its usage restrictions

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