DEVICE FOR BENDING OF SHEET GLASS Russian patent published in 1998 - IPC

FIELD: devices for bending of sheet glass. SUBSTANCE: device has upper die 1 made of aluminum alloy in the form of cast solid member whose thermal expansion equals to thermal expansion of glass with channels 4 for uniform heating with the help of heat carrier, circular lower die 2 and means of control and/or regulation of temperature of upper die which provides for its heating up to 200 C which is below the temperature of glass bending equalling about 600 C. Upper die at temperature of thermal expansion has surface of contact with sheet glass corresponding to the curvature of bent sheet glass. Regulation and control of temperature of upper die are effected by varying the flow rate and/or temperature of heat carrier in the form of synthetic or mineral oil. EFFECT: higher efficiency. 9 cl, 4 dwg