Patent ID: 6309206
Filing Date: 2001-10-30
Classification: B28B,B29C,B30B

Abstract:
A plant for forming ceramic tiles, including ceramic tiles having large dimensions, said plant comprising:a bed;a ceramic mold supported on said bed;a fixed upper cross-member and a movable cross-member connected to said fixed cross-member by means of a double-acting hydraulic cylinder-piston unit;a punch supported by said movable cross-member;a source of pressurized hydraulic liquid connected to a cylinder of said cylinder-piston unit via a distributor valve; anda maximum pressure valve of adjustable setting, wherein said punch includesa cavity,a lattice positioned within said cavity and defining a plurality of cells,an elastic membrane securely fixed to edges of said cavity and of said lattice, said cells communicating with a single manifold connected to a pressurized oil source via a distributor valve arranged to connect said cavity alternately to said source and to a discharge of the distributor valve, andprogrammed means for operating said distributor valve.