Injection device for low melting point metallic material

摘要

The purpose of this invention is to prevent sludge from flowing into a measuring chamber by partitioning the inside of a melt cylinder into a melt stirring part and a molten metal flow passage part, and to stabilize supply of the metallic material and measurement of the molten metal. A nozzle member 14 of which the inside of the rear part is formed into a measuring chamber 13 is attached to the tip of a melt cylinder 11. The end face of the opening periphery of the measuring chamber 13 of the nozzle member 14 faced to the inside of the melt cylinder is projectingly formed into a ring-shaped bearing 14b. A hollow stirring shaft 16 provided with stirring blades 15 on the outer periphery is supported by the bearing 14b and a bearing member 21 in the rear end of the melt cylinder so as to be freely rotatable with a suction port 25 bored in the side wall of the tip part. An injection rod is put into the stirring shaft and a plunger 17 with a ring valve on the tip is fitted into the measuring chamber 13 so as to be freely movable forwards and backwards. The inside of the melt cylinder is partitioned into a melt stirring part A and a molten metal reservoir B by the stirring shaft 16. The meting cylinder 11 is installed slantwise on the machine base with the nozzle member side downward to use the tip part as a sludge receiver 27.