subject: Vertical injection machine using three chambers [print this page] Another embodiment of the present invention includes a vertical injection machine comprising a vertical injection machine comprising a first chamber containing a heating means for melting metal into a liquid state in a first chamber, a second chamber, a passing means for passing a portion of the liquid metal from the first chamber into the second chamber and a sealing means for sealing the passing means. The machine also comprises a vertically oriented third chamber, a metering means for drawing in liquid metal from the first chamber into the second chamber and for forcing the portion of metal from the second chamber to the third chamber, an injection means for sealing an opening between the third chamber and the second chamber and for injecting liquid metal from the third chamber into a mold, and a lifting means for lifting the vertical injection machine toward the mold prior to injecting the liquid metal into the mold and for lowering the vertical injection molding machine away from the mold after injecting the liquid metal into the mold.
