Abstract: To form a tire carcass, a body ply is wound about a drum, which has two half-drums movable axially in opposite directions to and from a center plane of the drum, and having respective turn-up bladders, on each of which is laid a respective annular lateral portion of the body ply; each annular lateral portion being turned up about a respective bead bundle and onto a sidewall of a toroidal-shaped annular central portion of the body ply by inflating the relative turn-up bladder and controlling distension of a given annular portion of the turn-up bladder so that, when inflation is completed, the annular portion assumes a given final position, in which an intermediate portion of the turn-up bladder rolls outwards along the relative sidewall of the annular central portion of the body ply.

Abstract: To form a tyre carcass, a body ply is wound about drum, which has two half-drums movable axially in opposite directions to and from a centre plane of the drum, and having respective turn-up bladders, on each of which is laid a respective annular lateral portion of the body ply; each annular lateral portion being turned up about a respective bead bundle and onto a sidewall of a toroidal-shaped annular central portion of the body ply by inflating the relative turn-up bladder and controlling distension of a given annular portion of the turn-up bladder so that, when inflation is completed, the annular portion assumes a given final position, in which an intermediate portion of the turn-up bladder rolls outwards along the relative sidewall of the annular central portion of the body ply.

Abstract: To form a tire carcass, a body ply is wound about a drum, which has two half-drums movable axially in opposite directions to and from a center plane of the drum, and having respective turn-up bladders, on each of which is laid a respective annular lateral portion of the body ply; each annular lateral portion being turned up about a respective bead bundle and onto a sidewall of a toroidal-shaped annular central portion of the body ply by inflating the relative turn-up bladder and controlling distension of a given annular portion of the turn-up bladder so that, when inflation is completed, the annular portion assumes a given final position, in which an intermediate portion of the turn-up bladder rolls outwards along the relative sidewall of the annular central portion of the body ply.

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: A method and machine for producing a tyre component part by gradually depositing a strip of elastomeric material on a toroidal surface of a support rotating about its axis; the machine incorporating an applicator roller and a pressure roller for respectively applying and pressing the strip on the surface, and which are moved simultaneously crosswise to a deposition path of the strip, so that a contact point between the applicator roller and the surface moves in a radial plane of the support, and a contact point between the pressure roller and the surface moves on a surface generally parallel to the radial plane; the pressure roller being mounted to oscillate about an axis, which is moved simultaneously with the two rollers so as to translate parallel to the radial plane.

Abstract: A method and system for feeding a continuous rod of elastomeric material automatically to a user unit along a feed line having at least one powered portion and extending between an extruder, for forming the rod, and the user unit, and wherein, upstream from the powered portion, the rod is fed along a supporting device defining, for the rod and when at rest, a first path of given fixed length; and wherein, once the rod reaches and is engaged by the powered portion, a movable part of the supporting device is withdrawn from the first path to feed the rod along a second path, one portion of which is a bend of variable length.

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.

Abstract: A feed unit for feeding elastomeric material, extruded by at least one extruder, to at least one user unit, and wherein a variable-length conveyor is supported by a first and a second supporting device located at an input end and an output end of the conveyor respectively; and wherein the first supporting device is connected to the conveyor to allow the conveyor to rotate about a vertical first axis and a horizontal second axis, both crosswise to a travelling direction of the elastomeric material along the conveyor; the second supporting device is extensible vertically and connected to the conveyor by a first releasable joint; and the conveyor is connectable to the user unit by a second releasable joint.

Abstract: Method and machine for rubberizing an annular surface of a body, the rubberized coating being applied by bringing said annular surface into rotation about an axis and progressively coating the annular surface itself by means of a strip, of a determined section, of elastomeric material supplied by an extruder, shaped by at least one calender and applied, at a determined application speed, to the annular surface to be rubberized by an applicator roller having a determined peripheral speed and positioned tangential to the annular surface to be rubberized at a point of application of the strip; the rotation of the annular surface being controlled so as to maintain the application speed constant; and the section of the strip being controlled by applying to the strip a first drawing, always constant, between the applicator roller and the annular surface to be rubberized, and a further drawing upstream to the first drawing; the further being constant to apply to the annular surface a strip with a constant section, o

Abstract: A machine for scraping tire treads comprising two units (10, 30), one (10) upper and one (30) lower, arranged according to a vertical axis (y--y) for the handling and positioning of a tire (2) in a symmetrical position relative to a horizontal axis (z--z) and for operating the tire in rotation around an axis of rotation coinciding with the vertical axis of such handling and operating units (10, 30). There is further provided a unit (20) for work tools (21) placed in rotation around a vertical axis parallel to the axis of rotation of tire (2) and automatic means (5, 5a) for loading/unloading tire (2) on/from lower supporting and positioning unit (30).