Abrégé

A method and system for automatically feeding a strip (4) of elastomeric material to a user unit (8) by means of a feeding line (12) comprising an inlet conveyor (13) adapted to receive the strip (4) from a calender (10), an outlet conveyor (14) adapted to feed the strip (4) to an applicator device (11) of the strip (4) onto the user unit (8), and a shuttle (16) to transfer a head portion of the strip (4) from the inlet conveyor (13) to the outlet conveyor (14) and to assume, once the head end of the strip (4) has been released onto the outlet conveyor (14), a variable tensioning position, wherein it engages the strip (4) so as to form a bend along the path of the strip (4).

Classes IPC  ?

• B29D 30/16 - Mise en place des couchesGuidage ou étirage des couches en cours d'application
• B29D 30/30 - Mise en place des couchesGuidage ou étirage des couches en cours d'application

Abrégé

A bidirectional telescopic guide (1) having a connection bar (2), a first (5) and a second shaft (6) movable in opposite directions with respect to the connection bar (2) in a longitudinal direction (7), a first (10) and a second guide and slide assembly (11) for coupling the first shaft (5) to the connection bar (2) and the second shaft (6) to the first shaft (5), respectively, and a motorized drive (12) for both shafts (5 and 6); the motorized drive being driven by a single motor (38) and having a pair of racks (32 and 33), one solidly connected to a connection bar (2) and the other to the second shaft (6), and both meshing with a single pinion (35) driven by the motor (38) and rotatably mounted on first shaft (5).

Classes IPC  ?

• F16C 29/00 - Paliers pour pièces à déplacement uniquement linéaire
• B23Q 1/60 - Supports mobiles ou réglables d'outils ou de pièces utilisant des mécanismes particuliers avec des guidages en translation uniquement avec deux guidages en translation uniquement
• F16H 19/04 - Transmissions comportant essentiellement et uniquement des engrenages ou des organes de friction et qui ne peuvent transmettre un mouvement rotatif indéfini pour convertir un mouvement rotatif en mouvement alternatif et vice versa comportant une crémaillère et pignon

Abrégé

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).

Classes IPC  ?

• B29D 30/24 - Tambours

Abrégé

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.

Classes IPC  ?

• B29D 30/32 - Pose des tringles ou des noyauxPliage des couches textiles autour des tringles ou des noyaux de tringle

Abrégé

A method and machine (A) for producing a tyre component part by gradually depositing a strip (7) of elastomeric material on a toroidal surface (4) of a support (1) rotating about its axis (3); the machine incorporating an applicator roller (9) and a pressure roller (13) for respectively applying and pressing the strip (7) on the surface (4), and which are moved simultaneously crosswise to a deposition path (P) of the strip (7), so that a contact point (15) between the applicator roller (9) and the surface (4) moves in a radial plane (Pi) of the support (1), and a contact point (15) between the pressure roller (13) and the surface (4) moves on a surface (S) generally parallel to the radial plane (Pi); the pressure roller (13) being mounted to oscillate about an axis (19), which is moved simultaneously with the two rollers (9, 13) so as to translate parallel to the radial plane (Pi).

Classes IPC  ?

• B29D 30/14 - Roulage ou pressage des couches dans les procédés de fabrication
• B29D 30/28 - Rabattement par roulage ou pressage dans le processus de fabrication

Abrégé

A system (1A; 1B; 1C) for supporting tyres (3), wherein a tubular support (2), insertable through a tyre (3) having two beads (6) a given distance apart, has a tubular body (7, 15) fitted with two bladders (35), which are located the aforementioned given distance apart, are connected to compressed-air circuits (19, 24, 25), and are each located inwards of a respective bead (6) to lock the bead (6) in position with respect to the tubular body (7, 15) when the bladder is inflated.

Classes IPC  ?

• B29D 30/06 - Pneumatiques ou leurs parties constitutives

Abrégé

To build a tyre carcass (2), a tubular carcass body (2) is formed about a building drum (1), which has a longitudinal axis (3), and an outer surface (4) coaxial with the longitudinal axis (3) and defined at least partly by a ring of longitudinal articulated rods (21) lying in respective planes of a sheaf of planes through the longitudinal axis (3); the building drum (1) locking two bead bundles (28) to the tubular carcass body (2) and torus -shaping the tubular carcass body (2) by moving and/or deforming the articulated rods (21) in their planes.

Classes IPC  ?

• B29D 30/24 - Tambours

Abrégé

To form a tyre carcass (2), a body ply (20) is wound about a drum (1), which has two half -drums (5) movable axially in opposite directions to and from a centre plane (4) of the drum (1), and having respective turn-up bladders (8; 34), on each of which is laid a respective annular lateral portion (23) of the body ply (20); each annular lateral portion (23) being turned up about a respective bead bundle (7) and onto a sidewall (24) of a toroidal -shaped annular central portion (22) of the body ply (20) by inflating the relative turn-up bladder (8; 34) and controlling distension of a given annular portion (12; 38) of the turn-up bladder (8; 34) so that, when inflation is completed, the annular portion (12; 38) assumes a given final position, in which an intermediate portion of the turn-up bladder (8; 34) rolls outwards along the relative sidewall (24) of the annular central portion (22) of the body ply (20).

Classes IPC  ?

• B29D 30/32 - Pose des tringles ou des noyauxPliage des couches textiles autour des tringles ou des noyaux de tringle
• B29D 30/24 - Tambours

Abrégé

A tyre building drum, wherein a spindle (4) has an axis (6), and a first and second flange (19, 20) coaxial with the axis (6) and movable axially with respect to each other to support and shape a tyre carcass (3), and is fitted to and projects from a drive unit (5) for rotating the first and second flange (19, 20) about the axis (6), and for varying a distance between the first and second flange (19, 20); the first flange (19) being fixed to the free end of an end portion (15a) of a drive shaft (15) of the drive unit (5) to rotate about the axis (6) with the drive shaft (15); and the second flange (20) being fitted in axially sliding, angularly fixed manner to the end portion (15a) of the drive shaft (15).

Classes IPC  ?

• B29D 30/00 - Fabrication de pneumatiques, de bandages pleins ou de leurs parties constitutives
• B29D 30/24 - Tambours

Abrégé

A feed unit (11) for feeding elastomeric material (9), extruded by at least one extruder (8), to at least one user unit (10), and wherein a variable-length conveyor (38) is supported by a first and a second supporting device (65, 66) located at an input end and an output end of the conveyor (38) respectively; and wherein the first supporting device (65) is connected to the conveyor (38) to allow the conveyor (38) to rotate about a vertical first axis (79) and a horizontal second axis (81), both crosswise to a travelling direction (39) of the elastomeric material (9) along the conveyor (38); the second supporting device (66) is extensible vertically and connected to the conveyor (38) by a first releasable joint (94); and the conveyor (38) is connectable to the user unit (10) by a second releasable joint (27).

Classes IPC  ?

• B29D 30/16 - Mise en place des couchesGuidage ou étirage des couches en cours d'application
• B29D 30/30 - Mise en place des couchesGuidage ou étirage des couches en cours d'application
• B65G 21/12 - Châssis ou carters de support ou de protection pour transporteurs sans fin ou éléments de traction des transporteurs à courroies ou à chaînes mobiles ou à pièces interchangeables ou relativement mobilesDispositifs pour déplacer le châssis ou des parties de celui-ci pour permettre le réglage de la position du porte-charges de l'élément de traction dans son ensemble
• B29D 30/60 - Application de bandes de chapes en caoutchouc, c.-à-d. application de bandes de rechapage non vulcanisées par enroulement de bandelettes étroites