Abstract: A tyre building apparatus (1) comprising a drum (2) formed by two half-drums (7, 8), which are specular with respect to a centre plane (4) of the drum (2), are axially relatively movable and are angularly coupled to a respective shaft (5; 16) to rotate about a common axis (3); the apparatus (1) being equipped with a first actuating device (6) to rotate the drum (2) about the axis (3) and continuously vary the distance between the two half-drums (7, 8); and a second actuating device (39) to radially move the drum (2) between a configuration of maximum radial expansion and a configuration of maximum radial contraction; the first actuating device (6) being placed outside the drum (2) to axially move the half-drums (7, 8) via a relative telescopic movement of the respective shafts (5, 16); and the second actuating device (39) being arranged on board the drum (2) and being operable independently of the first actuating device (6) and of the movement of the shafts (5, 16) of the two half-drums (7, 8).

Abstract: A tyre carcass building drum (1) having a longitudinal axis (3) and two half-drums (6) movable along the longitudinal axis (3) in opposite directions away from and towards a centre plane (4) of the drum (1), each one comprising a bead carrying device (16) defining a saddle and a turn-up device (41) designed to turn up a annular side portion (42) of a carcass ply around, and on the outside of a respective bead ring; the turn-up device (43) having an end portion arranged, at rest, along a peripheral annular portion (18) of the saddle (17) and shaped so as to define an extension of the curvilinear profile of the saddle (17); and thrust means (50) being provided to directly and independently exert an axial thrust and a radial thrust on the turn-up device (43). The invention also relates to an operating method of said drum.

Abstract: To build a tire carcass, a tubular carcass body is formed about a building drum, which has a longitudinal axis, and an outer surface coaxial with the longitudinal axis and defined at least partly by a ring of longitudinal articulated rods lying in respective planes of a sheaf of planes through the longitudinal axis; the building drum locking two bead bundles to the tubular carcass body and torus-shaping the tubular carcass body by moving and/or deforming the articulated rods in their planes.

Abstract: To build a tyre carcass, a tubular carcass body is formed about a building drum, which has a longitudinal axis, and an outer surface coaxial with the longitudinal axis and defined at least partly by a ring of longitudinal articulated rods lying in respective planes of a sheaf of planes through the longitudinal axis; the building drum locking two bead bundles to the tubular carcass body and torus-shaping the tubular carcass body by moving and/or deforming the articulated rods in their planes.