Vertical die casting machine

A vertical die casting machine having a machine base including an oil tank, an oil pump control motor, an accumulator, an electric control box, a control valve set and a supporting frame, said supporting frame having tie bars located in four corners thereof for securement of an upper platen, a lower platen, and an intermediate platen, said upper platen having a clamp-cylinder for displaceably driving said upper platen vertically along said tie bars and a crank mounted in a lower section to secure a backing plate for holding a die, characterized in that said lower platen includes a shot chamber formed therein for receiving molten metal, a main pressure cylinder located below said shot chamber for displacing a plunger tip into said shot chamber for filling said die, and a lower secondary pressure cylinder fluidly coupled to said main pressure cylinder to provide increased pressure to said plunger tip;

• said upper platen having an upper secondary pressure cylinder mounted thereon above said shot chamber to give an added pressure to said die from above.