Abstract: According to the present invention, in adhering a belt edge tape (1) which is interposed between belt layers of a tire, press rollers surely adhere by pressing the belt edge tape (1) to a building drum (D) while preventing the press rollers from being caught by end portions of inclined cords which constitute a belt .

Abstract: A process for depositing an annular reinforcing element on an annular anchoring structure of a tyre for vehicle wheels. The annular anchoring structure includes at least one substantially circumferential annular insert with which at least one filling insert is associated. The process includes the steps of: loading the annular anchoring structure onto a service platform; associating the annular reinforcing element with an annular portion of a side surface of the filling insert in a radially outer position with respect to the substantially circumferential annular insert, so as to form a reinforced annular anchoring structure; and unloading the reinforced annular anchoring structure from the service platform. The reinforced anchoring structure thus obtained can be used in building a carcass structure in the manufacturing of tyres for vehicles.

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: A method and system for retreading a tyre; the method including the steps of: removing the worn tread from the tyre; winding a green-rubber cushion about the tyre; forming at least one longitudinal groove in an inner surface of a tread strip; applying to the inner surface of the tread strip a green-rubber strip which is inserted inside the longitudinal groove to fill the longitudinal groove; winding the tread strip about the tyre and on top of the green-rubber cushion; and curing the tyre fitted with the green-rubber cushion and the tread strip.

Abstract: A robotized arm drives in rotation a drum carrying a tire being processed and conveniently moves it in front of a delivery nozzle supplying a continuous elongated element of elastomer material in order to form a tire component. The delivery nozzle is connected through at least one selecting valve with two or more extruders, each designed to supply a respective blend. The selecting valve connects the delivery nozzle with the outlet of one of the extruders, breaking communication between the nozzle and the other extruders. The outlets of the non-active extruders can be connected with at least one outlet duct. It is thus possible to replace the type of blend used for manufacturing the tire component without the article of manufacture having to be moved away from the delivery nozzle.

Abstract: Building a carcass structure in the manufacturing of a tyre for vehicle wheels includes associating, at each end edge of a carcass ply laying on a forming support, at least one respective annular reinforcing structure obtained by depositing at least one respective reinforcing element. The deposition of the at least one respective reinforcing element includes feeding a continuous reinforced band-like element at a cutting unit, cutting to size at least one first reinforcing element from the continuous reinforced band-like element, moving the first reinforcing element from the cutting unit toward a first end edge of the carcass ply, positioning the first reinforcing element on the first end edge, cutting to size at least one second reinforcing element from the continuous reinforced band-like element, moving the second reinforcing element from the cutting unit toward a second end edge of the carcass ply opposite said first end edge, and positioning the second reinforcing element on the other end edge.

Abstract: The present invention includes methods and apparatus (10) for forming a tire component upon an axially tapered building surface (100). In particular embodiments, such methods include the step of providing a mechanical system, the system including a plurality of cutting members (42) and an application surface (64) for transferring material to the axially tapered building surface, the axially tapered surface comprising a surface of revolution that varies radially along a rotational axis of the surface. Particular embodiments may also include translating a sheet of material along a translation path through the mechanical system, and cutting a strip of material from the sheet with one or more of the plurality of cutting members during the step of translating.

Abstract: The invention can efficiently provide a carcass member constituting a carcass layer of a radial tire, particularly, a carcass member a direction of a cord of which constitutes an angle of substantially 90° relative to a tire circumferential direction, and can easily adjust a length in accordance with a size, one piece of a cord (C) is continuously passed through a rubber coating die (14) to coat rubber on the cord, the rubber coated cord (C1) is shaped such that a sectional outer shape thereof constitutes an elliptical shape, the rubber coated cord (C1) is wound around an aligning drum (30) while adjusting a direction of the elliptical shape by way of an aligning guide (20) to bond without producing a gap to form a cylinder-like member (A1), thereafter, the cylinder-like member (A1) is cut in a direction in parallel with the drum axis center to constitute a sheet-like shape.

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: The constituent elements of a carcass structure of a tire are formed by laying elementary components on a building support including an inflatable bladder set in an inflated condition in which it substantially reproduces the inner configuration of the carcass structure to be obtained. A belt structure carrying a tread band, both produced separately, is coaxially disposed around the carcass structure formed on the building support and applied thereto following a radial expansion of the inflatable bladder. In a vulcanization mold, the building support is submitted to an over-inflation step to press the tire against the inner walls of the mold. The circumferential edges of the inflatable bladder are in engagement with respective anchoring flanges with possibility of movement in a radial direction, so as to be submitted to an elastic expansion during the over-inflation step.

Abstract: A process for building tyres, includes forming at least one component of the tyre being processed directly on a forming support. The tyre component consists of elastomeric material including reinforcing thread elements. The continuous ribbon-like element of elastomeric material including reinforcing thread elements is produced by feeding the reinforcing thread elements through openings defined by circumferential grooves formed in at least one of two guide rollers consisting of idler rollers facing each other, and by laying at least one layer of elastomeric material on the reinforcing thread elements.

Abstract: A tire structural member fabricating method fabricates a tire structural member by successively and contiguously attaching strips 1 to the convex outer surface having an outwardly convex cross section of a forming drum 11 by a strip feed device 21 such that the strips 1 extend obliquely to the center axis C of the forming drum 11. The strip feed device 21 moves parallel to the center axis C of the forming drum 11 at a fixed speed V and feeds strips 1 successively onto the outer surface of the forming drum 11. A controller 40 controls the rotation of the forming drum 11 such that the angular velocity ? of the forming drum 11 varies gradually.

Abstract: A tire manufacturing method in which a rubber strip is passed through and between a rotating pair of rollers and held by the lower roller. The rubber strip is moved to a formed body on a support, and wound helically and stacked. When the tip of the rubber strip is supplied, the rotational peripheral speed of the lower roller for stacking is made relatively slower than that of the upper roller to provide a difference in feeding amounts of the rubber strip by the rollers, and thus the tip of the rubber strip is guided to the lower roller side having a smaller feeding amount. After the tip of the rubber strip is held by the lower roller, the rotational peripheral speeds of the rollers are changed to the same speed, and the rubber strip is stacked.

Abstract: A belt member on a supply conveyor is transferred onto a building drum from an inclined distal end portion while holding on both side edge portions in the width direction thereof. A supply conveyor places the belt member thereon and a hand device which includes holding members, extending in the feeding direction of the supply conveyor. In a state that a distal end portion of the belt member on the supply conveyor is held on a lower surface of the press plates, of the hand device, the belt member is transferred to the building drum along with a feeding operation of the supply conveyor and, at the same time, the belt member is adhered by pressing to a peripheral surface of the building drum from a distal end portion thereof while rotating the building drum along with the transfer of the belt member.

Abstract: An apparatus for manufacturing a reinforcement from a thread laid down directly in its final location by projecting lengths of the thread onto a receiving surface (S). The apparatus has feed means for feeding thread from a source of thread, a rotary conduit (2) receiving the thread, thread-cutting device has a roller fixed with respect to the thread, and a moving cutter acting on the thread in collaboration with said roller so as, for each revolution of the rotary conduit, to release a length having a free end at the cutting means end. The apparatus also has a buffer positioned in the path of the free end so that, during the operation, the free end strikes the buffer before coming into contact with the receiving surface (S).

Abstract: A strip member application system for feeding a ribbon-like rubber strip (4) through a clearance between application rollers forming a pair (11), and applying the rubber strip (4) onto a rotational member (2). A guide roller (7) to be wound by the rubber strip (4) is provided on the upstream side of the application roller pair (11), and defines a substantially U-shaped detour path extending downwards. A first and a second auxiliary rollers (6, 8) are arranged on the downstream side and the upstream side of the guide roller (7), respectively. The application roller pair (11) can be swung integrally with the guide roller (7) and the second auxiliary roller (8), within a horizontal plane and about a pivot that is spaced from the guide roller (7) toward the first auxiliary roller (6).

Abstract: An unvulcanized rubber member passed from the transfer terminal end of a liner to the outer peripheral surface of a winding roller is transferred and press-fitted to a winding body by rotating the winding roller. By this, the unvulcanized rubber member is transferred from the transfer terminal end of the liner to the winding body while being restrained by an outer peripheral surface of the winding roller. Thus, even if vibration is applied to a transfer means due to a diagonal waving, the winding position and the wound shape of the rubber member can be maintained substantially unchanged.

Abstract: A process for manufacturing elastomeric components of a tire for a vehicle wheel includes feeding a continuous elongated element from a delivery member by exerting a feeding pressure inside the delivery member, rotating a building support around a geometrical rotation axis of the support, carrying out controlled relative displacements between the delivery member and the support to form a tire component, stopping the feeding of the elongated element when formation of the tire component is complete, and exerting a counter-pressure inside the delivery member after stopping the feeding. Rotating the support assists circumferential distribution of the elongated element on the support. Carrying out controlled relative displacements assists transverse distribution of the elongated element on the support. The tire component is defined by a plurality of coils laid in a pre-established deposition pattern depending on a predetermined cross-section outline to be given to the tire component.

Abstract: A cord reinforcing layer 30 can be highly efficiently fanned with easy control, and the amplitude and the wavelength of a wavy steel cord 32 can be made uniform throughout the cord reinforcing layer. When the wavy steel cord 32 (ribbon-like body 37) is wound plural times around the forming drum 35 to form the cylindrical cord reinforcing layer 30, the amount of extension is made decreased with distance from a set position P of a bead core 12 in the axial direction, and the amount of extension applied in advance to the wavy steel cord 32 in the vicinity of the set position P is approximated to the amount of extension according to the expansion and deformation of the wavy steel cord 32 at a position spaced away from the set position P, whereby at least either one of the amplitude and the wavelength of the wavy steel cord in the tire can be made uniform throughout the cord reinforcing layer 30.

Abstract: A continuous elongated element of elastomeric material is produced through an extruder at a linear delivery speed and directly fed onto a moving surface of a conveyor without interposition of other devices. The continuous elongated element is advanced on the moving surface along a predetermined direction and at a linear advancing speed different from the linear delivery speed until a proximal end of the conveyor. Subsequently, the continuous elongated element is applied onto a forming support which rotates relative to the proximal end of the conveyor at a peripheral speed different from the linear delivery speed, so as to deform the continuous elongated element and apply it in the form of wound coils onto the forming support in order to form a component of elastomeric material of a tyre.

Abstract: A ribbon-like element supplied from a supply source is wound on the rotating toroidal support member, when a first rotatable guide roller arranged spaced from the outer surface of the support member is moved in parallel with the meridian direction along the outer surface of the support member, and turned so that the direction of its rotational axis approaches a tangent relative to the outer surface of the winding member. A second guide roller is arranged on a straight line perpendicular to a plane containing the moving trajectory of the first guide roller and passing through the first guide roller, and has a rotational axis that extends in the widthwise direction of the ribbon-like body extending from the supply source toward the winding member.

Abstract: An object is to extrude stably a rubber strip material of a predetermined cross-sectional shape without reducing an extruding speed of the rubber strip material from an extruding die. As a means therefor, there is provided an extrusion apparatus 10 for a rubber strip material for use in a tire fabrication process in which an unvulcanized rubber strip material S which is extruded from an extruding die 20 is wound spirally to build a tire rubber member, characterized in that a pair of rotatable rolls 24, 26 are provided at a distal end portion of the extruding die 20 in such a manner that their outer circumferential surfaces confront each other, and in that an extruding discharge port 28 is formed in a gap defined by the pair of confronting rolls 24, 26.

Abstract: A carcass ply is built on a forming drum by application of a plurality of strip-like elements by the steps of: setting a width of these strip-like elements, setting a width of the overlapped part between two adjacent strip-like elements, setting a fitting diameter of the forming drum by calculating a corresponding extension of a radially external laying surface, and calculating a whole number of strip-like elements to be applied. The whole number of strip-like elements is applied by rotating the forming drum around a geometric rotation axis thereof, and applying pairs of strip-like elements by means of a first laying unit and a second laying unit located close to opposite portions of the forming drum relative to the geometric rotation axis.

Abstract: A method for determining the operating parameters of a device for manufacturing a reinforcement from a thread (1) laid directly in its final position by projecting lengths of thread (10) onto a receiving surface (S).

Abstract: In a process for manufacturing tyres for vehicle wheels, including building, on a toroidal support, a carcass structure including at least one carcass ply associated, at axially opposite end edges thereof, with annular anchoring structures, the step of building the carcass structure includes forming at least one reinforcing structure, operatively associated with the annular anchoring structures through deposition on the toroidal support of at least one reinforcing element at a deposition region defined on the toroidal support. The deposition of the at least one reinforcing element includes the steps of providing at least one reinforcing element having a length determined as a function of the length of the deposition region; deforming the at least one reinforcing element to form an annular reinforcing element having a shape substantially corresponding to the shape of the deposition region; and depositing the annular reinforcing element at the deposition region.

Abstract: Device for manufacturing a reinforcement from a thread laid directly in its final position by spraying lengths of the thread onto a receiving surface. The thread lengths are delivered from a conduit to a guide as the conduit rotates about an axis. The guide includes deflectors forming therebetween a slot having a thread inlet orifice and a thread spray (discharge) orifice spaced apart along the guide's height. The separation between the deflectors narrows toward the spray orifice, wherein the deflectors form therebetween an angle in the range of 3° and 7° when measured at any point along the height of the slot.

Abstract: The manufacturing device comprises a rotary distributor 6 in rotation about a rotation axis R, the rotary distributor comprising at least one elbowed tube 61, the elbowed tube having a corridor for receiving the wire on the radially internal side and forming output guidance on the externally radial side. The device comprises a member for conveying to the distributor comprising a tubular portion 53 substantially perpendicular to the rotation axis R, a space in the radial direction being provided between the tubular portion 53 and the elbowed tube 61. A knife 7 is disposed in the space between the rotary distributor and the conveying member. The conveying member and the distributor are coupled and both rotary, the knife 7 being mounted on a knife holder 70 for purposes of adjustment and whose rotation is locked during cutting.

Abstract: In tyre manufacture, a belt structure is made by means of strip-like segments, each including parallel cords incorporated into an elastomeric layer. The strip-like segments are sequentially laid down in mutual circumferential side by side relationship on a toroidal support. The apparatus for manufacturing such a reinforcing structure for vehicle tyres includes: a laying unit including at least one laying assembly designed to apply each of the strip-like elements onto a toroidal support according to a predetermined laying angle relative to a circumferential extension direction of the toroidal support itself; the laying assembly including at least a first presser element movable in contrast relationship against the outer surface of the toroidal support; the first presser element includes at least one tapered end adapted to perform the contrast relationship and forming a tilted side according to a tilt angle correspondent with the predetermined laying angle of the strip-like elements.

Abstract: An apparatus for building pneumatic tyres includes a forming support and an assembling device to assemble components of elastomeric material on the forming support. The assembling device includes a feeding unit to deliver a continuous elongated element of elastomeric material, a conveyor having a moving surface along a predetermined direction and toward a proximal end thereof close to the forming support, and an application device positioned at the proximal end. The continuous elongated element is moved forward on the moving surface as far as the proximal end and the forming support is rotated to enable application of the continuous elongated element in the form of coils wound up on the forming support itself. A retaining device co-operates with the conveyor to brake the continuous elongated element at the end of the application, while the forming support goes on rotating, until it causes stretching and severing of the continuous elongated element.

Abstract: The invention makes a rubber covering process for cords and processes of cutting and aligning cords a series of processes to enable simplification of installations and processes and manufactures a belt member of high quality, in which straightness and rubber adhesiveness of cords can be improved. As measures therefor, a belt member 50 of a predetermined width, in which a single cord C is made oblique, is fabricated by feeding a single cord C while maintaining straightness thereof in a longitudinal direction, passing the cord through a rubber covering die 15 during the feed to cover the cord C with rubber, subsequently feeding a tip end side portion of the rubber covered cord C1 to a constant rate cut line 20 to cut the tip end side portion of the rubber covered cord C1 every feed, and feeding the rubber covered cord C1 having been cut to an alignment table 30 in a state of maintaining the straightness to sequentially align and join the same obliquely to a cord direction.

Abstract: A tooling head for bi-directional tire cord application to an annular surface reciprocates in a forward and a reverse direction across the annular surface. The tooling head includes a housing; a nose block assembly coupled to the housing and reciprocating in an axial direction relative to the tooling head housing; a pair of cord engaging rollers mounted to a remote end of the nose block assembly and moving therewith in a forward and a reverse direction across the annular surface, the rollers positioning at least one cord against the annular surface in the forward and reverse directions; and a biasing element engaging against the nose block assembly for alternatively biasing the rollers against the annular surface.

Abstract: A cutting mechanism and method for a tooling head is provided, the tooling head including a housing; a cord line feeding passageway extending through the housing to an applicator end, and an applicator assembly at the applicator end for application of the cord line to an annular surface. The cutting mechanism provides a reciprocally moving plunger body housed within the tooling head; a reciprocating cutting member moving between a first position cutting the cord line and a second position in a non-cutting relationship with the cord line; a cutting member being coupled to the plunger body to translate reciprocal movement of the plunger body to reciprocal movement of the cutting member between the first and second positions. A stream of air may be directed into the cord line passageway proximate the cutting member to assist in threading a severed free end of the cord through the passageway to the applicator assembly.

Abstract: A process for producing easily in high efficiency an inner liner having strip pieces obtained by cutting a ribbonlike rubber strip at given length arranged in parallel relationship in the across-the-width direction, aligned in the direction of tire circumference and bonded together. The process comprises spirally winding ribbonlike rubber strip (21) round liner forming drum (10) at given pitch so as to make partial superimposition, thereby obtaining tubular matter (20), and cutting the tubular matter (20) at one position on the circumference thereof in the across-the-width direction so as to provide a sheet wherein severed strip pieces (21A) are bonded to each other in the state of being aligned in parallel relationship, having a length corresponding to the length of liner circumference on a forming drum in the tire forming step, and wherein the two ends on the starting side and terminating side of the spirally winding can be joined together on the forming drum.

Abstract: A cord tensioning mechanism for a tire cord applicator head includes a closed loop timing belt extending between spaced apart pulleys and a tension adjustment pulley pressuring the cord laterally against the timing belt sufficiently to place the cord into a desired tension.

Abstract: The invention provides a perforating apparatus, which can efficiently form air vent holes in necessary locations on a tire constituent member and facilitates setting and changes of perforated positions to be able to readily accommodate for a change in size of the tire constituent member, and as perforating means 10, which performs a piercing action every one-time conveyance, a multiplicity of needle bodies 11 disposed on one of upper and lower sides of a feed table 5 of a band-shaped material B for the tire constituent member to be able to perpendicularly pierce the band-shaped material B on the feed table 5 are arranged in parallel in a direction of conveyance of and in a width direction of the band-shaped material B and provided to be controlled individually in respective sets, each set being composed of one or plural needle bodies 11, or each set being composed of one or plural rows of needles bodies in a width direction.

Abstract: A carcass ply is applied around an outer surface of a building drum, according to an application diameter greater than the fitting diameter of the tyre. An annular anchoring structure defining the fitting diameter is coaxially engaged around each of the end flaps. A n outer sleeve including at least one belt structure possibly associated with a tread band is disposed at a coaxiaily centred position around the carcass sleeve applied onto the building drum. Through axial approaching of two halves forming the building drum, the carcass sleeve is shaped into a toroidal configuration to determine application of same against a radially internal surface of the outer sleeve.

Abstract: According to the present invention, in adhering a belt edge tape (1) which is interposed between belt layers of a tire, press rollers surely adhere by pressing the belt edge tape (1) to a building drum (D) while preventing the press rollers from being caught by end portions of inclined cords which constitute a belt.

Abstract: The invention can efficiently provide a carcass member constituting a carcass layer of a radial tire, particularly, a carcass member a direction of a cord of which constitutes an angle of substantially 90° relative to a tire circumferential direction, and can easily adjust a length in accordance with a size, one piece of a cord (C) is continuously passed through a rubber coating die (14) to coat rubber on the cord, the rubber coated cord (C1) is shaped such that a sectional outer shape thereof constitutes an elliptical shape, the rubber coated cord (C1) is wound around an aligning drum (30) while adjusting a direction of the elliptical shape by way of an aligning guide (20) to bond without producing a gap to form a cylinder-like member (A1), thereafter, the cylinder-like member (A1) is cut in a direction in parallel with the drum axis center to constitute a sheet-like shape.

Abstract: A method for manufacturing a tyre for vehicle wheels, includes a carcass structure having at least one carcass ply associated with axially opposite annular anchoring structures. The method includes the steps of manufacturing at least one pair of annular anchoring structures of the carcass structure and associating the pair of annular anchoring structures with the at least one carcass ply at axially opposite end flaps of the carcass ply. The step of manufacturing each annular anchoring structure includes the steps of manufacturing a bead core and coating the bead core with a reinforcement tape through an apparatus. The step of coating the bead core includes the steps of winding the reinforcement tape onto the bead core moving a tape deposition member with respect to the bead core. The step of manufacturing the annular anchoring structure further includes a step of loading the reinforcement tape onto the tape deposition member.

Abstract: Air intrusion at molding of a ribbon laminated tire is prevented. When a ribbon (S) is wound on a molding drum (1) in the helical state so as to form a ribbon laminated tire, a pressing roll is made movable in the axial direction of the molding drum (1) in synchronization with an affixing roll (2) of a ribbon extruder (3), and driving control is carried out for revolution around a Z-axis and moreover around a Y-axis in addition to movement in the X-axis and Y-axis directions so that the pressing roll can be pressed in contact perpendicularly to the ribbon surface wound in the helical state over the molding drum (1).

Abstract: In tyre manufacture, a belt structure is made by means of strip-like segments each including parallel cords incorporated into an elastomeric layer, which strip-like segments are sequentially laid down in mutual circumferential side by side relationship on a toroidal support.

Abstract: During manufacture of a tyre for motor vehicles, one or more structural elements of elastomeric material, such as a tread band provided with a respective under-layer, are manufactured by laying a continuous elongated element on the carcass structure or other forming support, which elongated element is longitudinally divided into a first and second mutually-coupled portions that are obtained through extrusion of two different elastomeric materials coming from respective extruders leading to a common extrusion die. Laying of the coils takes place in such a manner that the first and second materials form a first layer and a second layer overlapping the first layer, respectively.

Abstract: A pneumatic tire having a portion formed by laminating a rubber ribbon exhibits improved durability due to reduced propagation of cracks from the surface of the laminated portion of the rubber ribbon at a sidewall, for example. A pneumatic tire includes a laminated portion (40) formed by winding and laminating a rubber ribbon (50), and a surface layer (41) formed by bonding a rubber sheet on the outer surface of the laminated portion (40) at, for example, a sidewall (31). The surface layer (41) covers projections, recessions, and portions of adhesion failure on the laminated portion (40), and smoothes the surface of the tire, thus preventing cracking from propagating from the surface of the tire by tensile forces (P) and compressive forces (Q) during flexure.

Abstract: A device for laying reinforcement cords (41) of a tire. The device is formed of a first frame (1) comprising a motor-driven shaft (10) with an axis XX?, the motor-driven shaft (10) supporting a reference form on which the blank (4) of the tire rests. The first frame (1) itself is mounted rotatably about an axis ZZ? on a second frame (2) in such a manner that the axis ZZ? has a point of intersection with the axis of rotation XX? and belongs to the equatorial plane (E) of the blank (4) or of the reference form on which the blank rests. A third frame (3) is rigidly connected to the second frame (2), the third frame (3) supporting an apparatus (13) for laying the lengths of cords (41) by projection of the lengths of cords directly into their final position on the receiving surface formed by the tire blank (4).

Abstract: The present invention can transfer a belt member on a supply conveyor onto a building drum from an inclined distal end portion while holding on both side edge portions in the width direction thereof and can efficiently adhere the belt member according to the rotation of the building drum. As a means for such building, using a supply conveyor (5) which places the belt member (B1) thereon and a hand device (10) which includes holding members (17a), (17b) having press plates (16a), (16b) extending in the feeding direction of the supply conveyor.

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

Abstract: A fabrication method for a tire comprising a circumferential reinforcement, the said method comprising a stage during which a thread is wound around a form, the tension of the thread being managed during winding, in which method the thread tension is managed through the length of a compensation loop acted upon by a spring.

Abstract: An unvulcanized rubber strip (3) is supplied to an outer peripheral surface of a rotating cylindrical body (4) from a sending-out roller (16) which laterally moves in an axial direction of the cylindrical body (4), thereby spirally winding the rubber strip (3) to form a winding body (5). In a tilting reference plane (29) defined as a plane which is in parallel to a plane (4S) passing through an axis (4i) of the cylindrical body (4) and which passes through an axis (16i) of the sending-out roller (16), the sending-out roller (16) is held such that the sending-out roller (16) can tilt positively and negatively within an inclination angle (?) of 0 to 45° with respect to a tilting reference line (N) which is parallel to the axis (4i) of the cylindrical body (4). The sending-out roller (16) is laterally moved while changing the inclination angle (?).

Abstract: A tire belt machine comprises an extruder, a cooling drum, and a cutting station, such that the cooling drum draws a strip from the extruder. The cutting station is adapted to cut the strip into a plurality of plies that are laid adjacent one another to form a splice therebetween. A strip width sensor, a strip tracking system, and a strip temperature sensor are coupled to a central control unit to monitor the characteristics of the strip as it is processed. Based upon the monitored characteristics, the central control unit adjusts the operation of one or more of the components of the tire belt machine to maintain uniform splices between the strips.

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.