Device for automatically producing an opening or cavity on the side of a ceramic product during molding in the mold.

摘要

A device for producing an opening (4) or cavity in the side of a ceramic product (2) during product molding in a mold (3), the mold (3) having a molding cavity (6) delimited by a molding surface (7) having a window (11), the device (1) comprising a punch (5) converges to the window (11) so as to be possible to insert or remove from the mold cavity (6), the device being characterized in that the punch (5) is expandable with variations in its rigidity; the device (1) comprising constriction means (14; 8) differential variation of the shape of the punch (5); and actuator means (33) for deforming the punch (5) which, in the active condition, are designed to cause the punch (5) change shape against the opposing reaction of the constriction means (14; 8); the constriction means (14; 8) and the actuator means (33) producing a controlled punch (5), so that the punch protrudes introduced into the mold cavity (6) anisotropic deformation.