Abstract: An object is to provide a tire reinforcing layer forming device which can form, by a single device, plural reinforcing layers whose cord directions intersect one another. A reinforcing material piece 12A, which is distributed to an upper conveying path 72U, is affixed from a left end side of a drum 16 toward a right side, while the drum 16 is rotated in a direction of arrow CW. In this way, the reinforcing material piece 12A, which is affixed to an outer peripheral surface of the drum 16, falls to the right, i.e., rises to the left. Thereafter, similarly, the reinforcing material pieces 12A are successively affixed without gaps, and a first reinforcing layer is formed. Next, the reinforcing material piece 12A, which is distributed to a lower conveying path 72D, is affixed from the left end side of the drum 16 toward the right side, while the drum 16 is rotated in an opposite direction.

Abstract: In obliquely cutting a belt band-shaped material (B) to a predetermined length and joining belt material pieces (b) as cut to fabricate a belt member (B10) for a tire, according to the invention, a space, in which an apparatus is mounted, is decreased, a belt member of good quality and high accuracy of joining is manufactured, a cut processing section (A1) for a band-shaped material and an alignment processing section (A2) for belt material pieces as cut are arranged in parallel, in the cut processing section, whenever the band-shaped material (B) is intermittently forwarded, a leading end portion of the band-shaped material is held on a holding table 40 and obliquely cut by a cutter unit (30), the belt material pieces (b) as cut are attracted and held on an underside of a holding member (53) of a transfer unit (T) to be transferred onto and placed on an alignment conveyor (60) with oblique cut ends trued up, and in the alignment processing section, whenever a belt material piece (b) is transferred, the align

Abstract: An automatic plant for producing tyres includes a plurality of work stations and a plurality of devices for transferring the tyres from one work station to another work station and for moving the tyres within a same work station. Each work station is designed to assemble one or more corresponding structural components of the tyres. At least one of the structural components is supplied from a machine for producing the at least one structural component, through a dynamic storage unit, and to at least one of the work stations. A method for producing tyres includes making at least one structural component of the tyres, supplying the at least one structural component to a toroidal support, assembling the at least one structural component on the toroidal support, transferring the tyres from one work station to another, moving the tyres within a same work station, and vulcanizing the tyres.

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 method of manufacturing a circumferential reinforcement for a tire, said reinforcement comprising at least one thread (9) and an elastomeric material (12), in which said thread and a strip (38) of said elastomeric material in the unvulcanized state are wound simultaneously onto a form (21).

Abstract: A method for positioning an end of a cord line at a target location on an annular tire building surface, includes positioning a cord line segment over the target location; tensioning the cord line segment between leading and trailing segment ends; and severing the cord line segment at a point between the leading and trailing segment ends so that the resultant cord line end is at the target location on the tire building surface. Transporting a severed portion of the cord line segment away from the annular tire building surface may be conducted and a tire cord ply may be constructed to extend from the cord line segment about at least a portion of the annular tire building surface prior to severing the cord line segment.

Abstract: A shaped rubber body with improved uniformity in terms of weight and/or physical properties is produced by extruding a rubber strip by a positive displacement extruding system that includes, as seen from an upstream side of the rubber strip, a screw extruder unit, a gear pump unit and an extrusion head unit with an extrusion nozzle, which are connected in series with each other. The rubber strip is fed to a rotating support along a substantially straight passage extending from the screw extruder unit to the extrusion nozzle of the extrusion head unit, passed through a gap defined between a pair of pressure roll, and applied onto an outer surface of the support by one of the pressure rolls.

Abstract: A device that enables a rubber strip to be applied to a tire blank. The device comprises a rubber extruder provided with an extrusion orifice for shaping the rubber strip and delivering said strip from the extruder. The orifice is defined by a roller mounted to rotate on the extruder. The device further comprises thrust means for thrusting the roller against the blank so that the roller constitutes an applicator for applying the rubber strip against the blank. The extruder is mounted to pivot about an axis so as to form a lever on which the thrust means act to thrust the roller against the strip.

Abstract: In an apparatus for affixing a tire component member, a capacity of a driving means for a traveling head is decreased, and start end positions of affixing the tire component member are aligned in a peripheral direction of a drum and a widthwise overlap amount between the tire component members is made constant as is expected, and also a cycle time is shortened, in which the apparatus comprises a traveling head 2 moving forward and rearward in an axial direction of a drum 1, a clamp means 9 pushing a front end portion of the tire component member 3 protruded ahead from the traveling head 2 onto the peripheral face of the drum, a cutting means 12 arranged at one end side of the drum apart from the clamp means 9, guide rolls 5 arranged on the traveling head 2 and specifying a widthwise position of the tire component member 3, and a chuck means pulling the tire component member 3 to the clamp means 9.

Abstract: A method and apparatus for building a green tire or a tire component member by winding and laminating a rubber strip on a rigid core or a building drum. The apparatus includes a flattening roll and a rubber strip winder. The flattening roll flattens a projection of a stepped portion produced by overlapping portions of the rubber strip, and a roller of the flattening roll is moved so that it is constantly located at a given position with reference to the rigid core or building drum. The flattening roll moves in a direction opposite to a moving direction of the rubber strip winder during helical winding of the rubber strip on the rigid core or building drum.

Abstract: A method and a plant for manufacturing tyres for vehicle wheels wherein the method includes the steps of: a) building in a building station a substantially cylindrical carcass structure; b) manufacturing in a finishing station a substantially cylindrical sleeve including a tread band applied at a radially outer position with respect to a belt structure including at least one belt layer. Step b) includes the steps of assembling a first belt structure at a first working position on a first auxiliary drum of the finishing station; applying a tread band at a second working position at a radially outer position with respect to a second belt structure previously assembled on a second auxiliary drum of the finishing station, positioning the first auxiliary drum supporting the first belt structure at the second working position; and positioning the second auxiliary drum supporting the substantially cylindrical sleeve thus obtained at a picking position of the finishing station.

Abstract: A method for manufacturing a reinforcing structure for tires of vehicles includes the steps of preparing a plurality of strip segments having substantially parallel, longitudinal filiform elements at least partially coated by at least one layer of elastomeric material, and applying the plurality of strip segments along a circumference of a toroidal support, to form at least one continuous reinforcing layer about a geometric axis of rotation of the toroidal support. During the applying step, a relative angular rotation, between at least one of the plurality of strip segments and the toroidal support, occurs about an axis of correction substantially radial to the geometric axis of rotation. A related apparatus for manufacturing a reinforcing structure for tyres of vehicles is also disclosed.

Abstract: The invention resides in enabling high-mix low-volume production by a compact apparatus for a rubber sheet reinforced with a cord of a belt material for a tire, a body-ply material, etc. variously changing a cord material, cord arrangement angle, width of sheet, etc. and relates to manufacturing apparatus and method for a rubber sheet reinforced with a cord according to wrapping around a rubber coated cord group continuously on a surface of a pair of a cylindrical rotating body rotating in the same direction or on a surface of a cylindrical rotating body disposed small diameter roller groups of plural number on a side surface of a cylinder.

Abstract: A method that can be used in the automated construction of a vehicle tire, using butt spliced tire components consisting of material webs, for example textile cords or steel cords that are embedded in a rubber mixture, to produce a carcass insert of the vehicle tire. The end sections of the cut material web can be clamped in a splicing device with pairs of upper and lower splicing elements, which can be displaced in relation to one another and the sections can be butt spliced.

Abstract: A sheathed thread comprises a bare thread coated in a rubber sheath. The sheath comprises a plurality of segments spaced apart from one another along the bare thread in such a manner that bare portions of thread alternate with sheathed portions of thread. The device for fabricating the sheathed thread comprises a sheathing chamber through which the thread passes. An isolator member is movable between a position in which it isolates the portion of the thread passing through the sheathing chamber from the rubber, and a position in which it puts the portion of the thread passing through the sheathing thread into contact with the rubber.

Abstract: A tooling head for construction of a tire cord to an annular surface is provided having a first roller and a second roller for alternative engagement against the annular surface in a forward and a rearward direction, respectively, the first and second rollers having a spaced apart orientation and annular grooves defining a passageway between the rollers. A guide tube extends between the roller annular grooves within the passageway. A cord exiting guide tube end is axially offset to remote extremities of the first and second roller annular grooves and a first and second axially extending slits are formed within the guide tube opposite the roller annular grooves, respectively.

Abstract: An apparatus for producing a pneumatic tire reinforcement, said apparatus being intended to produce a reinforcement consisting of a thread (2) delivered substantially continuously and on demand by an appropriate delivery device, said apparatus being intended to be used in cooperation with a substantially toroidal form (1) on which said reinforcement is progressively built up by depositing arches (3) of said thread along a desired path for said thread on the surface of said form. The apparatus includes: a thread guide (4) in which the thread can slide; means (5) for moving said guide along the desired path for said thread; and first and second pressing means (7, 8) placed respectively on either side of the form and capable of holding the thread against the form substantially at the ends (6) of said arches, wherein the pressing means comprise, at least on a side (B) of the form, a rotary pressing arm (9).

Abstract: The manufactured pieces are the ones both end surfaces thereof in the tire circumferential direction are cut from the pieces before cutting 1 and the pieces before cutting 1 have the cutting regions whose cross-sectional shapes in the tire width direction are the same at both ends of its circumferential direction. And in the cutting process of cutting the pieces for modifying the lengths in the circumferential direction from each of the pieces before cutting 1, in order that the length in the tire circumferential direction of each piece after cutting and that both of the end surfaces in the circumferential direction of the piece after cutting are included in the cutting regions, the cutting lines of each piece are set at different not less than two positions (a, a? and b, b?) in the tire circumferential direction and the pieces are cut by either one of the set cutting lines.

Abstract: A carcass ply producing apparatus for producing a carcass ply constituting a carcass layer of a tire includes a supply head for supplying one or a plurality of ply cords, a head driving mechanism for reciprocating the supply head along a widthwise direction of the carcass ply, a sticking body having a sticking surface to which the ply cord supplied by the supply head is stuck, a sticking body driving mechanism for moving the sticking surface of the sticking body along a longitudinal direction of the carcass ply, and a moving amount controlling mechanism capable of controlling a moving amount of the sticking surface with respect to a moving amount of the supply head. When the ply cord is supplied along the widthwise direction of the carcass ply, a disposition angle of the ply cord with respect to the longitudinal direction can be changed.

Abstract: The apparatus for manufacturing a reinforcement for a tire comprises an eyelet 60 through which the cord 4 can slip; the eyelet 60 is carried by a drive mechanism 3. A guide ring 5 is positioned relative to a main arm 31 in such a manner that this passes through the ring during its cyclical movement. The ring comprises a slot 54 through which the cord passes. The ring 5 comprises a base 50, two lateral walls 51 which are rigidly connected to the base and which are disposed on either side thereof, two deflectors 52 each rigidly connected to one of the lateral partition walls disposed at the end thereof opposite the base, the two deflectors being oriented towards one another and each ending with a lip 53, the lips being of similar and opposite shapes, the slot 54 being defined by the lips of the deflectors.

Abstract: Apparatus for fabricating a strip-like reinforcement structure for a tire, which includes a laying head for laying the strip. The laying head includes a guidance passage for the strip formed by slots, rolling-down rollers intended to cooperate with a form, a cutter for cutting the strip into separate arches, and a turning-over mechanism for turning over the strip about its own longitudinal axis for causing an opposite face of the strip to face the form. The turning-over mechanism includes a frame mounted on two bearings in a cradle of the laying head. The frame can turn through at least 180° with respect to the cradle for inverting the strip.

Abstract: The thread 4, intended to form a carcass reinforcement, is laid in continguous hoops on a rigid core 1 by a system with at least two oscillating arms transporting an orifice 6 so as to enable it to pass over a core 1 and thus lay adjacent hoops.

Abstract: An apparatus is invented for forming a tire tread on the surface of a prototype tire that is pre-fabricated during the tire manufacturing processes. The apparatus for forming the tire comprises six forming devices disposed above the circular rotary base for securing the prototype tire, a transporting compression ring disposed around the rotary base for supplying and compressing an iron core belt onto the prototype tire of the forming device, and a first extruder, a second extruder, a third extruder, and a fourth extruder for extruding a ribbon-shaped rubber band to form a tire tread on the surface of the prototype tire. Accordingly, by constructing a plurality of extruders around the circular rotary base, the installation space can be smaller than the conventional prototype tire forming apparatus, the device fabricating cost can be reduced, and various shaped tires can be fabricated.

Abstract: A reinforcement strip is laid on a rotating receiving surface during the manufacture of a tire. The strip passes through a guide which is moved alternatingly transversely relative to a travel path of the strip, whereby the strip is laid in an undulating pattern on the receiving surface. The amplitude of the alternating transverse movement is varied as a function of a ratio of: (a) the speed of a portion of the strip approaching the guide, and (b) the speed of the receiving surface. Between the guide and the receiving surface the strip is pivoted by 90 degrees about the strip's longitudinal axis so as to be laid tangentially on the receiving surface.

Abstract: A module for manufacturing a cured tire from a plurality of tire components is disclosed. The module has a plurality of component appliers located at spaced locations along a predetermined path, and a mobile tire building trolley for movement along the predetermined path and two detachable tire building drums for mounting on the movable trolley. A tire curing station has one tire mold for curing the assembled tire components while mounted on one of the detachable tire building drums. The tire is cured as the other detachable tire building drum on the mobile tire building trolley is having tire components applied. One or more of the plurality of component appliers includes a means for forming the tire component at the location of the applier. The applied components include a liner, a pair of bead cores, a ply, a pair of sidewalls, a pair of chafers, and one or more belt layers and a tread.

Abstract: An apparatus for manufacturing components for a tire being worked is provided. The apparatus includes a toroidal support for carrying the components of a tire being worked. The toroidal support has an outer surface substantially matching an inner shape of the tire. The apparatus also includes means for feeding at least one elongated element through at least one delivery member disposed adjacent to the outer surface of the toroidal support. The apparatus also includes means for circumferential distribution arranged to drive the toroidal support in rotation around a geometric axis of rotation of the toroidal support so that the at least one elongated element is circumferentially distributed on the toroidal support.

Abstract: Device for fabricating a tire reinforcement by laying a cord 4 on a core 1. An arm 131 is mounted on a carriage 130, which is itself mounted on a rail 132 in such manner that it can slide parallel relative to the rotation axis of the core 1.

Abstract: Device for fabricating a tire reinforcement by laying a cord 4 on a core 1. An actuation mechanism 3 is provided for transporting the cord laying element in a cyclic, back and forth movement, bringing it in successive cycles close to each of the ends desired for the cord in the said trajectory. The actuation mechanism comprises at least a main arm 31, a front auxiliary arm 32 and a rear auxiliary arm 33, the main arm 31 being articulated on the front auxiliary arm 32 and being mounted on the rear auxiliary arm 33 by a cam follower that cooperates with a slot 312.

Abstract: A method for manufacturing a vehicle-tire belt structure includes preparing half-strips; splicing respective half-strips to form belt strips; moving the belt strips toward at least one assembly drum; and superposing portions of the belt strips to form a belt structure. Related methods for manufacturing vehicle-tire belt packages and crown structures are also disclosed. A plant for manufacturing a vehicle-tire belt structure includes an extrusion apparatus to form a fabric sheet; means to transport the sheet; a device for cutting the sheet to form multiple strips; a device for preparing first and second half-strips; means for transporting the half-strips; a device for splicing the first half-strips and the second half-strips to form belt strips; a device for cutting the belt strips into portions; and at least one assembly drum adapted to support the portions. Related plants for manufacturing vehicle-tire belt packages and crown structures are also disclosed.

Abstract: A strip builder for winding a material strip about a rotating core includes a traveling applicator head assembly for receipt of the material strip from an upstream extruder station and transport of the strip to a downstream rotating core. The assembly includes a central support arm in longitudinal travel along the rotating core. Attached to the central support arm is a belt roller, an applicator roller spaced therefrom and a belt drive coupled therebetween. A conveyor belt is wound about the belt roller. Upon rotation of the core, the rotation of the applicator roller rotates the belt roller coupled thereto. Rotation of the belt roller drives the conveyor belt towards the core with the material strip thereon. Upon the belt passing between the belt roller and displaced applicator roller, the strip is stretched and deposited onto the applicator roller for subsequent deposit onto the rotating core. A traveling stitching roller subsequently smoothes the material strip deposited on the rotating core.

Abstract: A tire forming system includes a band forming machine, a shaping forming machine, a belt/tread forming machine, means for supplying a band member and means for supplying a belt/tread member. The means for supplying the band member include an inner liner supply means, carcass supply means, band rubber parts supply means and bead supply means. The means for supplying the belt/tread member include belt supply means and tread rubber parts supply means. The means for supplying the band member and the means for supplying the belt/tread member are operative to cooperate with one another to continuously in series form a plurality of tires having different tire sizes.

Abstract: A cord is supplied continuously and on demand by a suitable distributor. The apparatus is used with a revolving form (1) on which the reinforcement is progressively built up by depositing sections of the cord along a desired trajectory for the cord on the surface of the form. The apparatus comprises an element for depositing the cord on the surface of the form (1), describing an alternating path between two turning points, pressers close to the turning points in order to apply the cord to the form at the ends of the trajectory, acting synchronously with the depositing element, a mobile guide (5) disposed opposite the form, in the space between the form and the path described by the depositing element, a fixed guide (6) substantially parallel to the mobile guide (5), control means for moving the mobile guide (5) in a circumferential direction, and motorization means for synchronously piloting the depositing element, the pressers, and the control means of the mobile guide (5).

Abstract: A method of manufacturing a belt material for tire, comprising the steps of spirally winding a ribbon, having a plurality of linear cords disposed longitudinally and coated with rubber, on the outer peripheral surface of a drum at specified pitches while the drum is rotated, sticking the side edges of the wound ribbon to each other so as to form a cylindrical wound body, and a linearly moving rotating blade in the axial direction of the drum in contact with a spiral blade groove formed in the drum at specified pitches while the drum is rotated so as to cut the wound body spirally so as to form a belt material having a specified width and a cord inclination angle.

Abstract: A cutting device and method in which a reinforcement is guided to a cutoff point where it is cut by a knife driven by a rotary shaft and carried along a closed path which brings the knife into cutting relationship with the reinforcement during predetermined cycles.

Abstract: A process and apparatus for laying a strip for the manufacture of a tire by extruding uncured rubber through a die to form a rubber tube on a rotary support and flattening the tubular form to form a band which is adhered to a receiving surface on the rotary support.

Abstract: A shaped rubber body with improved uniformity in terms of weight and/or physical properties is produced by extruding a rubber strip by a positive displacement extruding system that includes, as seen from an upstream side of the rubber strip, a screw extruder unit, a gear pump unit and an extrusion head unit with an extrusion nozzle, which are connected in series with each other. The rubber strip is fed to a rotating support along a substantially straight passage extending from the screw extruder unit to the extrusion nozzle of the extrusion head unit, passed through a gap defined between a pair of pressure roll, and applied onto an outer surface of the support by one of the pressure rolls.

Abstract: A method and an apparatus for manufacturing a pneumatic tire, in which carcass plies are formed by applying carcass cords over an outer surface of a toroidal core along cord paths extending in a meridian direction of the core are disclosed. A zigzag shaped carcass cord arrangement is formed by applying a carcass cord on an outer surface of an imaginary column axially of the imaginary column and sequentially engaging the carcass cord around hook pins arranged at opposite axial end portions of the outer surface of the imaginary column. The core is moved toward the carcass cord arrangement so that a center axis and an equatorial plane of the core are matched with a center axis and an axial center plane of the imaginary column, respectively.

Abstract: A thread 4, intended to form a carcass reinforcement for a tire, is laid in contiguous hoops on a rigid core 1 by a system with a single oscillating arm transporting an orifice 6 so as to enable the orifice 6 to pass over a core 1 and come as near as possible to each bead of the tire, in order to lay adjacent hoops.

Abstract: A ply station 12, a band station 13, a shaping station 14, and a belt-tread station 15 are disposed along one side of a conveyor line 11 which extends linearly. A first feeding apparatus 16 disposed between the stations 12, 13, a second feeding apparatus 17 between the stations 13, 14, and a third feeding apparatus 18 between the stations 15, 14 are movably supported on the conveyor line 11. A vulcanizing station 19 comprising a plurality of vulcanizers 20 is disposed on a second side of the conveyor line 11. A delivery apparatus 22 is disposed between the vulcanizing station 19 and the shaping station 14.

Abstract: The peripheral length (M) dimension of the outer peripheral surface of drums (35, 36) is set equal to the width (W) dimension of body ply materials (46A, 46B) used for tires or integral multiples thereof. The wrapping length (L) of the wrapper (40) in the direction of the length of the drum is set equal to the length dimension (L1) of the body ply materials (46A, 46B) used for tires. A ribbon (39) of predetermined width dimension in the form of a cord having a rubber covering applied thereto is produced. The ribbon (39) is spirally wound on the outer peripheral surface of the drums (35, 36) and the lateral edges of the ribbon are bonded together, thus producing the wrapper (40). The wrapper (40) is cut along a gentle curve which is substantially orthogonal to the direction of the length of the ribbon, thus providing the body ply materials (46A, 46B).

Abstract: The thread 4, intended to form a carcass reinforcement, is laid in continguous hoops on a rigid core 1 by a system with at least two oscillating arms transporting an orifice 6 so as to enable it to pass over a core 1 and thus lay adjacent hoops.

Abstract: The invention concerns a device for the application (1) of at least one cable onto a rotating receiving surface (2) revolving at a speed V2, comprising means (10) for feeding the cable that comprise at least one capstan (11) revolving at a speed V1, means (20, 30) to displace the cable transversely relative to the receiving surface (2) and means (40) to position the cable on said receiving surface, characterized in that the means (20, 30) to displace the cable transversely effect said displacement by the combination of a rotary movement about an axis perpendicular to the cable travel direction with a pivoting movement in a plane containing the axis of said rotation, the extent of pivoting being determined by the ratio between the speeds V1 and V2.

Abstract: A method of manufacturing an annular toroidially-shaped cord reinforced ply for a tire is described. The method involves applying an elastomeric layer on a toroidal surface and placing and stitching one or more cords in continuous lengths onto the elastomeric layer in predetermined cord paths. The method further includes dispensing the one or more cords from spools and guiding the cord in a predetermined path as the cord is being dispensed. Preferably, each cord is held against the elastomeric layer after the cord is placed and stitched and then indexing the cord path to a next circumferential location forming a loop end by reversing the direction of the cord and releasing the held cord after the loop end is formed and the cord path direction is reversed. This method allows the step of forming loop ends to occur at more than one diameter on the toroidal surface.

Abstract: Device for fabricating a tire reinforcement by laying a cord 4 on a core 1. An arm 131 is mounted on a carriage 130, which is itself mounted on a rail 132 in such manner that it can slide parallel relative to the rotation axis of the core 1.

Abstract: Device for fabricating a tire reinforcement by laying a cord 4 on a core 1. An actuation mechanism 3 is provided for transporting the cord laying element in a cyclic, back and forth movement, bringing it in successive cycles close to each of the ends desired for the cord in the said trajectory. The actuation mechanism comprises at least a main arm 31, a front auxiliary arm 32 and a rear auxiliary arm 33, the main arm 31 being articulated on the front auxiliary arm 32 and being mounted on the rear auxiliary arm 33 by a cam follower that cooperates with a slot 312.

Abstract: Within the scope of the manufacturing of a tyre, a belt structure (2) is manufactured by means of strip-like segments (5) each comprising parallel strips incorporated in an elastomeric layer, sequentially laid in mutual circumferential approach relationship onto a toroidal support (3). During the laying of each segment (5), an angular rotation of the toroidal support (3) is caused about an axis of correction (Y-Y) radial to the axis of rotation (X-X) of the toroidal support itself, situated in substantially barycentric position relative to the segment (5) which is about to be laid. A perfect match is thereby assured of each strip-like segment (5) with the adjacent strip-like segments, even when the toroidal support (3) presents a crown area with curvilinear cross section profile.

Abstract: The invention is a method or a device for wrapping the rubber strip around the forming drum while extruding an unvulcanized rubber strip from an injection device, wherein the rubber strip is pressed by a guide roll against the forming drum under tension, as well as a space for absorbing variations in an amount of extrusion of the rubber strip is formed between the guide roll and an extrusion outlet of the injection device, the forming drum is rotated in synchronism with extrusion of the rubber strip so that the guide roll is driven, and the rubber strip guided by the guide roll is wrapped around the forming drum.

Abstract: A process and apparatus for laying a strip for the manufacture of a tire by extruding uncured rubber through a die to form a rubber tube on a rotary support and flattening the tubular form to form a band which is adhered to a receiving surface on the rotary support.

Abstract: A process and apparatus for laying a strip for the manufacture of a tire by extruding uncured rubber through a die to form a rubber tube on a rotary support and flattening the tubular form to form a band which is adhered to a receiving surface on the rotary support.

Abstract: An apparatus for manufacturing components for a tyre being worked is provided. The apparatus includes a toroidal support for carrying the components of a tyre being worked. The toroidal support has an outer surface substantially matching an inner shape of the tyre. The apparatus also includes means for feeding at least one elongated element through at least one delivery member disposed adjacent to the outer surface of the toroidal support. The apparatus also includes means for circumferential distribution arranged to drive the toroidal support in rotation around a geometric axis of rotation of the toroidal support so that the at least one elongated element is circumferentially distributed on the toroidal support.