A press bending apparatus includes a shaping station having an upper mold with a shaping surface having a generally concave downward elevational configuration and a lower mold with an apertured shaping surface complementing the shaping surface of the upper mold. A vacuum shuttle transfers heat softened glass sheets from a heating furnace to the shaping station where it deposits the glass sheets on the lower vacuum mold. The glass sheet is shaped between the molds. A rotating arrangement rotates the lower mold and the shaped glass sheet held thereagainst by vacuum from a first position wherein the shaping surface of the lower mold faces upward to a second position wherein the shaping surface of the lower mold faces downward. The shaped glass sheet is the deposited on a tempering. A rotating arrangement maintains vacuum in the lower mold as the mold rotates.
申请公布号
CA1287980(C)
申请公布日期
1991.08.27
申请号
CA19870553221
申请日期
1987.12.01
申请人
PPG INDUSTRIES, INC.
发明人
FRANK, ROBERT G.;CLAASSEN, GEORGE R.;WATERLOO, THOMAS L.;SCHULTZ, STEPHEN J.;FECIK, MICHAEL T.