Patent ID: 7785519

Claim:
A mould for moulding braking bands of composite material, with ventilation ducts, the mould comprising: a. a substantially cylindrical housing comprising an inner edge and an outer edge; and having two half-moulds, each half-mould having an impression surface, the impression surfaces facing one another, lying substantially perpendicular to an axis of symmetry; at least one of the half-moulds being slidably movable by means of respective principal actuating means along the axis of symmetry towards the other half-mould for producing a predetermined pressure suitable for the moulding of the braking band, b. an inner, substantially cylindrical wall having an inner edge and an outer edge; c. wherein said housing and inner wall are concentric with one another; and together with the two half-moulds, said housing and inner wall defining a moulding cavity without apertures during producing of said predetermined pressure in order to avoid addition of said composite material during movement of the two half-moulds and while the two half-moulds are closed to form said closed cavity; d. one or more pin elements which can form the ventilation ducts and which can be transferred by secondary actuating means from a rest position to a working position and from the working position to the rest position, respectively, in which the pin elements do not interfere with the moulding cavity in the rest position, and the pin elements intersect the moulding cavity in the working position, and when the pin elements are in the work position, they lie substantially in a plane perpendicular to the axis of symmetry, halfway between the impression surface of the two half-moulds; e. wherein said pin elements extend through the inner and outer edge of the housing; through the moulding cavity; and through the inner and outer edge of the inner wall when they are in the work position; and said pins do not extend through the moulding cavity or the inner or outer edge of the inner wall when they are in the rest position.