Single-phase multi-voltage nixie tube displaying multifunctional welding machine with three potentiometers adjusting parameters

Abstract

The invention relates to a single-phase multi-voltage nixie tube displaying multifunctional welding machine with three potentiometers adjusting parameters. Power supplies of the multifunctional welding machine are 110 V-120 V and 220 V-240 V single-phase power supplies. The welding machine has three welding methods of MIG / MAG gas shielded welding, manual arc welding and argon arc welding, and all the welding methods have a no-load low-voltage output function. A voltage-multiplying conversion control circuit is adopted to adapt to multi-voltage input. A microprocessor control technology is adopted in a nixie tube display and operation control circuit and a main control circuit, so that the circuits are simplified, and the reliability is improved. A welding gun can be a European-style connector gas shielded welding gun or a wire drawing gun for welding. The potentiometers adjust the welding parameters. A touch key selects the welding methods and 2T / 4T welding gun switch operation modes during gas shielded welding. Thrust current can be adjusted through manual welding. The number of circuit boards is five, each circuit board is provided with a corresponding control circuit and a control function thereof, and various anti-interference protection measures are provided.

Description

technical field [0001] The invention belongs to the technical field of inverter welding machines, and relates to a single-phase multi-voltage digital welding machine which adopts single-phase 110-120V and 220-240V power supplies and has three functions of MIG / MAG gas shielded welding, manual arc welding and argon arc welding. The tube displays the multifunctional welding machine with three potentiometers to adjust parameters. Background technique [0002] At present, the competition in the small inverter MIG / MAG gas shielded welding machine product market is very fierce, not only reflected in the function and welding performance of the welding machine, such as whether a variety of welding methods can be used; whether the welding effect is good, but also reflected in the display and welding performance. Whether the operation interface is advanced, whether it is convenient for users to operate and use, whether it has VRD (no-load low voltage output) and parameter unified adjus...

AI Technical Summary

Problems solved by technology

Most of these welding machine products are 220V ~ 240V single-phase power supply, and cannot be used for other power supply voltages (such as 110V ~ 120V and 220V ~ 240V) and welding functions (such as manual welding, argon arc welding; gas There are more protection welding and manual welding functions)

At the same time, the display and operation control circuit, as well as the internal control circuit, also use analog control, and do not use microprocessor digital control technology.

The fully analog control circuit has low integration, and for welding machines with multiple welding methods, the circuit is more complicated, which reduces the reliability of the circuit work

In addition, the size of the circuit board and welding machine is also large, which wastes raw materials; in addition, there is no effective technical measure for the electromagnetic compatibility of the welding machine, and it cannot pass the EMC electromagnetic compatibility certification

Therefore, the market competitiveness of such products will naturally be weak, and its application range will be limited to a certain extent.

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