Abstract: A method for arranging elongated elements in a process for building tyres for vehicle wheels, including: simultaneously winding a first elongated element and a second elongated element respectively on a first winding support in a first axial position and on a second winding support in a first axial position; simultaneously winding a third elongated element and a fourth elongated element respectively on the first winding support in a second axial position different from the first axial position and on the second winding support in a second axial position different from the first axial position, in which the elongated elements of the second type are the same as each other and different from the elongated elements of the first type.

Abstract: A method and a related station for applying a sensing device to a tyre are described. A tape-shaped support with removably fixed sensing devices is advanced, to feed the sensing devices in sequence. A handling device is then rigidly coupled to a sensing device, maintaining at least a portion of an adhesion surface of the sensing device removably fixed to a support. The sensing device is then completely separated from the support, taken away by the handling device, and applied to an inner surface of a tyre by the handling device.

Abstract: A method for checking tyres, includes: arranging a tyre in a station for checking tyres; moving a sensor within the tyre; performing first checks on an inner surface of the tyre with the at least one sensor; engaging a radially outer portion of the tyre with grip elements of an overturning device; extracting the sensor from the tyre and spacing the sensor from the tyre; overturning the tyre by 180° by rotation of the grip elements; moving again the sensor within the tyre; performing second checks on the inner surface of the tyre with the sensor; extracting again the sensor from the tyre and spacing the sensor from the tyre; and transporting the tyre outside the station for checking tyres.

Abstract: Apparatus for applying noise reducing elements to tyres for vehicle wheels. The apparatus includes a loading station of stacks of noise reducing elements, an extraction station of noise reducing elements from each stack placed downstream of the loading station, and a conveyor placed downstream of the extraction station and extending along a predefined path. The conveyor is configured for supporting and advancing in a row the noise reducing elements extracted from the stacks which are then applied to a radially inner surface of the tyres. The extraction of each of the noise reducing elements contemplates: retaining a first noise reducing element placed at the base of a stack; raising the remaining noise reducing elements of the stack from the first noise reducing element; moving away the first noise reducing element according to a set path; and lowering the remaining noise reducing elements of the stack.

Abstract: A process and apparatus for applying noise reducer elements to tyres. Each noise reducer element has an anchoring surface coated with an adhesive layer. The anchoring surface is illuminated with a reference radiation. The radiation emitted by the anchoring surface is detected; and a digital image representative of the anchoring surface is determined as a function of the emitted radiation. Each pixel of the digital image is associated with a respective brightness value representative of the amount of adhesive present in an area of the anchoring surface corresponding to such each pixel. One or more noise reducer elements are applied on the radially inner surface of a tyre.

Abstract: A process and apparatus for applying noise reducer elements to tyres. Each noise reducer element has an anchoring surface coated with an adhesive layer. The anchoring surface is illuminated with a reference radiation. The radiation emitted by the anchoring surface is detected; and a digital image representative of the anchoring surface is determined as a function of the emitted radiation. Each pixel of the digital image is associated with a respective brightness value representative of the amount of adhesive present in an area of the anchoring surface corresponding to such each pixel. One or more noise reducer elements are applied on the radially inner surface of a tyre.

Abstract: A method for checking tyres, includes: arranging a tyre in a station for checking tyres; moving a sensor within the tyre; performing first checks on an inner surface of the tyre with the at least one sensor; engaging a radially outer portion of the tyre with grip elements of an overturning device; extracting the sensor from the tyre and spacing the sensor from the tyre; overturning the tyre by 180° by rotation of the grip elements; moving again the sensor within the tyre; performing second checks on the inner surface of the tyre with the sensor; extracting again the sensor from the tyre and spacing the sensor from the tyre; and transporting the tyre outside the station for checking tyres.

Abstract: Apparatus for applying noise reducing elements to tyres for vehicle wheels. The apparatus includes a loading station of stacks of noise reducing elements, an extraction station of noise reducing elements from each stack placed downstream of the loading station, and a conveyor placed downstream of the extraction station and extending along a predefined path. The conveyor is configured for supporting and advancing in a row the noise reducing elements extracted from the stacks which are then applied to a radially inner surface of the tyres. The extraction of each of the noise reducing elements contemplates: retaining a first noise reducing element placed at the base of a stack; raising the remaining noise reducing elements of the stack from the first noise reducing element; moving away the first noise reducing element according to a set path; and lowering the remaining noise reducing elements of the stack.

Abstract: A process and apparatus for applying noise reducer elements to tyres. Each noise reducer element has an anchoring surface coated with an adhesive layer. The anchoring surface is illuminated with a reference radiation. The radiation emitted by the anchoring surface is detected; and a digital image representative of the anchoring surface is determined as a function of the emitted radiation. Each pixel of the digital image is associated with a respective brightness value representative of the amount of adhesive present in an area of the anchoring surface corresponding to such each pixel. One or more noise reducer elements are applied on the radially inner surface of a tyre.

Abstract: A method for building tyres for vehicle wheels is described. Second stage forming drums are moved in a crown structure building line for building respective crown structures. Movement occurs along a first path for building a first part of components of the crown structure and a second path for building a second part of components of the crown structure. Additionally, first stage forming drums are moved in a carcass structure building line for building respective carcass structures. The flow of the second stage forming drums is managed through a first manipulator, while the flow of the first stage forming drums is managed through a second manipulator.

Abstract: A station for checking tyres includes a support structure defining an operating space for receiving a tyre and an overturning device with grip elements for engaging a radially outer portion of the tyre. A checking device includes a mechanical arm and at least one sensor associated with the mechanical arm. The overturning device overturns the tyre around an overturning axis perpendicular to a rotation axis of the tyre when the tyre is in the operating space. The mechanical arm is operatively active within the operating space and carries the sensor at least partially within the tyre for executing checks on an inner surface of the tyre housed in the operating space.

Abstract: Apparatus for applying noise reducing elements to tyres for vehicle wheels. The apparatus includes a loading station of stacks of noise reducing elements, an extraction station of noise reducing elements from each stack placed downstream of the loading station, and a conveyor placed downstream of the extraction station and extending along a predefined path. The conveyor is configured for supporting and advancing in a row the noise reducing elements extracted from the stacks which are then applied to a radially inner surface of the tyres. The extraction of each of the noise reducing elements contemplates: retaining a first noise reducing element placed at the base of a stack; raising the remaining noise reducing elements of the stack from the first noise reducing element; moving away the first noise reducing element according to a set path; and lowering the remaining noise reducing elements of the stack.

Abstract: A method for controlling the discharge of fluids during a process for vulcanization and moulding of a green tire includes the steps of: building at least one portion of a radially internal surface of a green tire by winding of a continuous elongated element of elastomeric material into a plurality of coils confining circumferential grooves along the rolling direction of the tire; disposing the circumferential grooves into fluid communication with discharge channels present in the radially external surface of a pressing bladder disposed in a radially internal cavity bounded by the green tire.

Abstract: A method and a related station for applying a sensing device to a tyre are described. A tape-shaped support with removably fixed sensing devices is advanced, to feed the sensing devices in sequence. A handling device is then rigidly coupled to a sensing device, maintaining at least a portion of an adhesion surface of the sensing device removably fixed to a support. The sensing device is then completely separated from the support, taken away by the handling device, and applied to an inner surface of a tyre by the handling device.

Abstract: A method and a plant for managing the production cycle of a plant for building tyres for vehicle wheels, wherein the plant provides for a storage region for anchoring annular structures and a plurality of processing stations at least one of which is associated with a forming drum, includes feeding a plurality of anchoring annular structures to the storage region, picking up the anchoring annular structures from the storage region at a predetermined picking-up position that does not change on changing of the types of the anchoring annular structures, and feeding the picked-up anchoring annular structures to the processing station associated with the forming drum.

Abstract: A plant (1) for looping annular anchoring structures (100) includes a looping device (2), a separation station (8a) and a coupling station (8b). A handling apparatus (3) is interlocked to the looping device (2) for managing the plant (1) by moving the plurality of annular anchoring structures (100) coupled to respective separation elements (300), the looped annular anchoring structures (200) coupled to respective separation elements (300) and the separation elements (300a). The separation elements (300) are fed, coupled to respective annular anchoring structures (100), along a feeding section (A1). The separation elements (300a) separated by respective annular anchoring structures (100, 200) are transferred from the separation station (8a) to the coupling station (8b) along a transfer section (T), stationing in at least a first intermediate station (11, 11a). The separation elements (300) are moved away, coupled to respective looped annular anchoring structures (200), along a moving-apart section (A2).

Abstract: A process and an apparatus for automatically applying a noise reducing element to a tyre for vehicle wheels. The process includes: a) providing a noise reducing element; b) providing an adhesive material; c) guiding the noise reducing element according to a predetermined direction; d) during the guiding, applying the adhesive material onto a first surface of the noise reducing element; e) manipulating the noise reducing element by interacting with at least one second surface of the noise reducing element different from the first surface on which the adhesive material has been applied; and f) positioning the noise reducing element in a predetermined position on a radially inner surface of the tyre, bringing the first surface into contact with the radially inner surface.

Abstract: A process for producing tyres with auxiliary components for vehicle wheels is described. The process includes i) covering the external surface of an expandable chamber for tyre vulcanisation and moulding apparatuses with a first substantially cross-linkable polysiloxane composition and ii) covering the radially inner surface of the impermeable elastomeric material layer of the green tyre with a second substantially non-cross-linkable polysiloxane composition. An expandable chamber for tyre vulcanisation and moulding apparatuses and, a process for treating the expandable chamber are also described.

Abstract: A station for checking tyres includes a support structure defining an operating space for receiving a tyre and an overturning device with grip elements for engaging a radially outer portion of the tyre. A checking device includes a mechanical arm and at least one sensor associated with the mechanical arm. The overturning device overturns the tyre around an overturning axis perpendicular to a rotation axis of the tyre when the tyre is in the operating space. The mechanical arm is operatively active within the operating space and carries the sensor at least partially within the tyre for executing checks on an inner surface of the tyre housed in the operating space.

Abstract: Apparatus for applying noise reducing elements to tyres for vehicle wheels. The apparatus includes a loading station of stacks of noise reducing elements, an extraction station of noise reducing elements from each stack placed downstream of the loading station, and a conveyor placed downstream of the extraction station and extending along a predefined path. The conveyor is configured for supporting and advancing in a row the noise reducing elements extracted from the stacks which are then applied to a radially inner surface of the tyres. The extraction of each of the noise reducing elements contemplates: retaining a first noise reducing element placed at the base of a stack; raising the remaining noise reducing elements of the stack from the first noise reducing element; moving away the first noise reducing element according to a set path; and lowering the remaining noise reducing elements of the stack.