| 摘要 |
PURPOSE:To save gas and smoothen transfer to arc when starting welding, by incorporating a valve mechanism in a gas pressure regulator of a gas pressure regulator for arc welding. CONSTITUTION:Gas entered from the inlet 11 of a gas pressure regulator 29 is heated by a heater 14 and goes out to the outlet 12 by opening and closing of a poppet 19 with a solenoid 17. The relation between inlet side pressure and outlet side pressure is balanced to regulated and set pressure by a buffer spring 30 and a regulating spring 25. The pressure regulator is installed in the tank side of the piping therefore a valve mechanism 16 also is installed in the tank side of the piping. Accordingly, when gas is supplied by opening the valve mechanism 16 at the time of starting welding, a stationary state can be obtained from the start of welding. As the pressure regulating mechanism 15 and valve mechanism are unified, time for piping can be saved and small space is enough for installation. |
