METAL JET UNIT

摘要

A metal jet unit is provided to discharge molten metal precisely and uniformly, thereby improving molding accuracy of three-dimensional articles. A metal jet unit(1) comprises a melting furnace(10), an actuator(30), an oscillator(40), and a centering unit(60). The melting furnace produces molten metal and is equipped with a nozzle(11) and an orifice(13). The actuator is installed to minutely vibrate up and down in the melting furnace and equipped with a plunger(31) pressing molten metal to the nozzle. The oscillator minutely vibrates the actuator. The centering unit comprises a first magnetic material(61) which is installed around the actuator between the oscillator and the melting furnace, and a second magnetic material(63) having the same polarity as the first magnetic material and installed apart from the periphery of the first magnetic material.