Die casting machine with compound docking/shot cylinder
AssigneePrince Machine Corporation
InventorsRobert W. Hegel, Melvin C. Hawke
Life of this patent
Estimating the term…
Abstract
A vertical die cast apparatus having a novel docking/shot assembly in which the docking and docking cylinder and shot cylinder are constructed in one compound cylinder. A novel construction for supporting the docking/shot assembly is also provided.
Claims23
In a die casting apparatus including a die body having a cavity and a sleeve receptacle communicating with said cavity, a shot cylinder assembly having an injection sleeve with a docking/shot assembly for docking said sleeve into communication with said sleeve receptacle for injecting a shot of injectable metal into said cavity, the improvement comprising:
- said docking/shot assembly comprising a compound cylinder including a first cylinder having a first chamber;
- a docking piston located in said first chamber and having a second cylinder with a second chamber;
- a shot piston located in said second chamber;
- a source of pressurized fluid;
- and
- valve means for causing said pressurized fluid to first actuate said docking piston in said first chamber to dock said sleeve in said sleeve receptacle and then actuate said shot piston in said second chamber to produce injection of said metal into said cavity.
In a die casting apparatus including a stationary front platen, a movable platen, and a die body located between said stationary and front platens, said die body having a cavity and a sleeve receptacle communicating with said cavity;
- a vertical shot cylinder assembly having an injection sleeve with a docking/shot cylinder assembly for docking said sleeve into said sleeve for injecting a shot of injectable metal into said cavity;
- a pair of spaced elongated support members for supporting said platens;
- a support subassembly for supporting said docking/shot cylinder assembly;
- said subassembly support comprising a tilting mechanism for tilting said cylinder assembly from an upright position aligned for docking to a tilt position for said injection sleeve to receive injectable metal, the improvement comprising:
- said front platen including a downwardly extending portion located between said elongated support members and having a cut-out extending upwardly from the lower edge of said downwardly extending portion through a space between said elongated support members;
- a support bracket assembly attached to said downwardly extending portion on each side of said space and supporting said docking/shot assembly, said support bracket depending from said downwardly extending portion and having a pivotal mounted support assembly for pivotally mounting said docking/shot assembly whereby said docking/shot assembly is pivotally mounted on said support bracket assembly so as to be pivoted from a tilted position through said space to a ready docking position;
- said docking/shot assembly comprising a compound cylinder including a first cylinder having a first chamber;
- a docking piston located in said first chamber and having a second cylinder with a second chamber;
- a shot piston located in said second chamber;
- a source of pressurized fluid;
- and
- valve means for causing said pressurized fluid to first actuate said docking piston in said first chamber to dock said sleeve in said sleeve receptacle and then actuate said shot piston in said second chamber to produce a shot of said metal into said cavity.
Dependencies are inferred from the claim text.