CHILL MOLD Russian patent published in 1994 - IPC

FIELD: foundry. SUBSTANCE: chill mold has half-molds 1 and 2 mounted on plate 4 of ejectors 5, central core 3 and ejectors 7. Plate 4 of ejectors 5 is made in the form of V-shaped or T-shaped branches with supporting platforms 9 of half-molds 1 and 2 positioned between them for displacement between platforms lugs for fastening to casting machine. Sector-shaped forming cores II with pockets 12 are mounted circumferentially of movable half-mold 2 for engagement with centering cores 13 provided in immovable half- mold 1. Cavity disposed in central portion of movable half-mold 2 has built-in annular ejector 7 with sector-shaped poles 8, which are coupled with plate 4 of ejectors for centering and limiting its stroke during returning to the initial position. EFFECT: increased efficiency and wider operational capabilities by providing obtaining of large-sized castings. 9 dwg