METHOD OF MOULDING GASIFIED MODEL UNIT IN A FLASK Russian patent published in 1995 - IPC

FIELD: moulding process. SUBSTANCE: flask with a unit set up inside it is filled with sand. Sand is carried from feeding bin over annular channel isolated from models equidistant to external outline of the model. After the unit is caught it is placed in a flask and at the same time the channel is formed. The output of the channel is positioned below model level. On filling the channel with a sand portion its output is removed upwards till the total disposal of channel from the flask. Such position of output ensures supply of sand to the flask and its volume increases fairly, one layer at a time. The vertical size of the channel is changed by moving its outlet owing to, for example, telescopic construction. EFFECT: excluded moving bins heavy loaded with sand and reduced production noise. 3 dwg