Floating mold changer carriage.

摘要

A floating mold changer carriage is movable between a shaping device for shaping a sheet of glass with at least one mold and a mold storage area spaced from the shaping device, for replacing the mold with a new mold. The carriage includes a main frame (12) having a plurality of pallets (50) mounted on a lower surface thereof and each having a flow passage (54) with its one open end connected to fluid source (56). The pallet (50) has a cylindrical portion (52) on its lower surface and a hollow annular member (70) of a resilient material disposed around the cylindrical portion. The annular member (70) has an opening (72) confronting the other open end (74) of the flow passage. When a fluid or air is supplied from the fluid source (56) via the flow passage into the annular members (70), the annular members (70) are inflated to float the main frame (12) off the floor (76). Continued supply of air develops a fluid or air layer between the floor (76) and the annular members (70) to reduce the coefficient of friction therebetween, thus allowing the carriage (10) to be moved easily.