Patent ID: 8016578
Filing Date: 2011-09-13
Classification: B29D

Abstract:
1. An apparatus for moulding and vulcanisation of tyres for vehicle wheels, comprising a vulcanisation press and a vulcanisation mould associated with said press, comprising: a pair of plates adapted to be moved toward each other and designed to operate on a tyre bead and sidewalls; a plurality of circumferentially distributed mould sectors adapted to be radially movable toward each other to operate at a tread band of the tyre, the plates and sectors being mutually movable between an open condition at which they are spaced apart to enable loading of the tyres being worked, and a closed condition at which they define a moulding cavity having a geometric configuration matching an outer surface of the tyre to be obtained; a plurality of sector carriers designed to support the mould sectors and movable together with said sectors; actuating means operatively connected to said sector carriers and said vulcanisation press to operate movement of said mould sectors from the closed condition to the open condition and vice versa; and a plurality of guide elements on which said plurality of sector carriers slide for movement of the mould sectors from the closed condition to the open condition and vice versa, wherein at least part of said sector carriers have at least one first spring device designed to exert a thrust action capable of achieving sliding of each sector carrier on the respective guide element in a substantially parallel direction, each first spring device being disposed such that the first spring device exerts said thrust action in the direction of a vertical central axis of its sector carrier so as to maintain the sector carrier against the guide elements.