Patent ID: 6578621
Filing Date: 2003-06-17
Classification: B22D,Y10S

Abstract:
An injection device for a low melting point metallic material comprising a melt cylinder provided with a heating means on the outer periphery thereof, a nozzle member of which the inside of the rear part is formed into a measuring chamber and which is attached at the tip of the melt cylinder so as to be freely attachable and detachable, a hollow stirring shaft provided with stirring blades on the outer periphery thereof in the melt cylinder, and an injection rod which is put into the stirring shaft and of which a plunger on the tip is closely inserted into the measuring chamber so as to be freely movable forwards and backwards, and being mounted on a machine base slantwise thereto with the nozzle member side downward, characterized in that the end face of the opening periphery of the measuring chamber facing the inside of the melt cylinder of said nozzle member is projectingly formed into an annular bearing;said stirring shaft is supported by the nozzle member and a bearing member in the rear end part of the melt cylinder with a suction port bored in the outer side wall of the tip part thereof; and the inside of the melt cylinder is partitioned into a melt stirring part provided with a material supply port and a molten metal reservoir communicating with said measuring chamber by the stirring shaft.