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: It is a subject to provide a method for manufacturing a tire rubber member and a pneumatic tire using the same capable of improving productivity and of accurately finishing sectional shapes.

Abstract: A process for assembling a tire, including producing a crown of said tire on a drum of variable diameter of a generally cylindrical form.

Abstract: In a method for forming a green tread rubber comprised of a cap rubber layer which outer surface forms a tread surface and a base rubber layer that adjoins the same inside thereof in the radial direction, a cap rubber having a rubber component of styrene/butadiene rubber or being a mixed rubber of natural rubber and butadiene rubber is used as the cap rubber layer. The base rubber layer is formed as an annular body in which a strap-like rubber extruded body of wide width, which is extruded from a rubber extruder and is cut into constant size, is wound around a molding drum by a single round with their end portions in a circumferential direction being joined with each other. The cap rubber layer is formed as a strip layered body in which a long strap-like rubber strip of narrow width, which is extruded from an rubber extruder, is successively wound by overlapping the same on the annular body in the circumferential direction and in a spiral manner.

Abstract: An object of the present invention is to provide a manufacturing method of a pneumatic tire capable of appropriately maintaining electrical conductivity performance and satisfactorily exerting improvement effect obtained by using a tread rubber blended with silica at a high ratio, and to provide such a pneumatic tire.

Abstract: In a tyre for vehicle wheels, the tread band sidewalls and/or other structural elements of elastomer material have a layered structure which includes at least one first component and at least one second component of a material with different composition from that of the first component. The first and second components have an undulated interface profile, defining elements of mutual mechanical engagement. Also described is a process and an apparatus for manufacturing a tyre.

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: The invention can reduce a step between rubber strips even in the case that the rubber strip is made thick, and inhibits a reduction of uniformity and tire quality, a deterioration of a tire outer appearance, and the like. A rubber strip (10) may be scalene triangular shape, a trapezoidal shape or a parallelogram shape having has a bottom line (11) forming a strip width (W), a first diagonal line (12) extending from one end of the bottom line (11) and a second diagonal line (13) extending from the other end (P2) of the bottom line (11), a length (L0) of the bottom line is set to 5 to 50 mm, and a thickness (T) thereof is set to 0.2 to 5.0 mm.

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 for manufacturing a tire includes forming a carcass structure, forming a tread band, placing the tire in a curing mold, and molding and curing the tire. The carcass structure includes a crown portion defined between two axially opposed sidewalls that extend radially toward an axis of rotation of the tire and terminate in a circumferential portion comprising an annular reinforcing structure for mounting the tire on a rim. The tread band extends circumferentially around the carcass structure and includes a molded relief pattern. Forming the tread band includes producing a strip of elastomeric material and winding it onto the crown portion. The strip includes an elongated right cross-section that is asymmetrical in a transverse direction. The strip is wound in a plurality of axially consecutive turns until the tread band is formed. At least one turn is at least partly overlapped onto a previously deposited, axially consecutive turn.

Abstract: A method and apparatus for balancing a tire during a retreading operation includes measuring the radial runout the buffed tire casing and applying the gum layer and tread strip to compensate for variances in runout. The gum layer is applied so that an overlap or smear is formed at the relative low portion of the casing. The tread strip is applied with the joint at the same low portion in cases where the low portion has a relatively large variance, or at another location if the variance is small or other low portions exist. In addition, the thickness of the gum layer and tread strip may be controlled for further compensation of the runout variance.

Abstract: A method for producing a vehicle tire belt structure includes forming at least one belt strip including at least one circumferential edge with a profile extending along a broken line. A vehicle tire includes a carcass structure, tread band, and belt structure. At least one carcass ply of the carcass structure includes reinforcing cords oriented substantially along radial planes of the tire. The belt structure includes at least one pair of radially superimposed belt strips including a plurality of reinforcing cords parallel to each other. The reinforcing cords of a first belt strip cross those of a radially adjacent belt strip. The reinforcing cords of the first and radially adjacent belt strips are obliquely oriented in opposite directions with respect to an equatorial plane of the tyre. At least one of the belt strips includes at least one circumferential edge with a profile extending along a broken line.

Abstract: A green tire or a tire component member is built by winding and laminating a rubber strip having a cross section in which at least one edge viewed in the width direction has a thickness that is substantially zero, and thickness of the rubber strip gradually decreases in a width direction from a maximum thickness position nearest to the edge to said edge, or a projection of a stepped portion of the green tire or the tire component member built by winding and laminating the rubber strip is flattened under pressure, so that the green tire is prevented from producing residual air and a saw blade like surface. Therefore, occurrences of residual air, bare, a flow crack or embedded contaminant in a product tire can be suppressed to enhance the durability of the tire.

Abstract: A method for applying a breaker or other reinforcement layer to a carcass strip by strip includes the steps of calculating an end gap based upon a nominal strip width, the size of the carcass, and the end count desired; calculating a distributed gap required to distribute the calculated end gap substantially equally between each strip; and applying the breaker strip by strip with each strip being separated from an adjacent strip by the distributed gap spacing.

Abstract: Method for forming a rubber strip which enables a wider rubber of small thickness without lowering an extruding speed and enables to reduce a building cycle time, thereby increasing the efficiency of tire manufacturing. Temperatures at a main-part casing 11, a screw shaft 12 and a head region included with the die 13 are controlled to be different from each other in a manner that: the temperature as controlled in the main-part casing 11 is higher than that in the screw shaft 12; and the temperature as controlled in the head region is higher than that in the main-part casing 11, when continuously extruding a rubber material in a form of a ribbon in forming a rubber strip 1.

Abstract: A pneumatic tire comprises a rubber component, e.g. tread rubber, which is formed by winding an unvulcanized hybrid rubber tape and vulcanizing the windings. The hybrid rubber tape has a width of from 5 to 50 mm and a thickness of from 0.5 to 3.0 mm and comprises a conductive rubber part and a less-conductive rubber part. On each side or only one side of the tape, the conductive rubber part forms a part of the surface of the tape, and the remaining part of the surface is formed by the less-conductive rubber part, and the conductive rubber part extends continuously in the longitudinal direction of the tape so that the vulcanized windings of the tape is provided with a conductive path for discharging static electricity.

Abstract: A method of producing a radial tire for a construction vehicle, the method enabling a vast reduction in facility costs. A first green tire is formed in a first step molding machine and then removed from it. After that, a vulcanizer bladder unit is installed on the tire. The tire is inflated by the vulcanizer bladder unit and then again placed in the first step molding machine with the vulcanizer bladder unit installed. After that, on the first step molding machine, belts and tread rubber are adhered to the outer periphery of the tire to form a completed green tire. Then the completed green tire, with the vulcanizer bladder unit, is assembled in a vulcanizing mold for vulcanization.

Abstract: A rubber composition is provided with a large friction force even on a body having, for example, an ice face of a low friction coefficient. The composition is constituted by a foamed rubber having a rationalized foaming state. The composition is applied to an upper-layer rubber part of a tread rubber constituting at least a ground contact face to enhance a gripping force on a frozen road surface or a snow covered road surface. The foamed rubber has continuous cells 6 each continuously extending substantially along a particular direction 4 and sealed with a resin protection membrane 5. Also, a method is provided for producing such a tire.

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: Three methods of constructing tires having functionally graded belts are provided. According to one method a bandage is used to hold neighboring belt segments in position so they may be simultaneously applied to a carcass. According to a second method, longitudinal incisions are applied to a belt ply to achieve the desired belt stiffness. According to a third method clamps are applied to a belt ply to reorient the belt cords.

Abstract: Pneumatic tires for aircraft service having a belt package with shoulder reinforcement. The tire includes a belt reinforcing structure or belt package having multiple cut belts, multiple spiral wound belt layers positioned radially between the cut belts and the tread, and multiple spiral wound shoulder layers proximate the shoulder. The spiral wound belt layers and the spiral wound shoulder layers are formed by a continuous cord-reinforced strip having a strip width. The spiral wound belt layers are characterized by a first winding pitch of approximately one strip width per revolution and the spiral wound shoulder layers are characterized by a second winding pitch of less than one strip width per revolution. Alternatively, the spiral wound shoulder layers may be formed with a tiered arrangement by shifting the starting location for successive spiral wound belt layers laterally so that the side edges are not coincident.

Abstract: An apparatus for continuously winding a rubber strip extruded from a rubber-strip extruding machine, on a tire-building drum, comprises: a rubber-strip extruding machine including a gear pump for delivering the rubber material outputted from the extruder to a forming nozzle; a tire-building drum on which a rubber strip is wound, the rubber strip outputted from the rubber-strip extruding machine and having a predetermined sectional shape; a first driver unit for moving the extruding machine relative to the drum; a second driver unit for driving the drum into rotation; a pressure roller for pressing the rubber strip against the drum when the rubber strip is wound on the drum; and a control unit for controlling the first driver unit; said controlling being made such that said extruding machine is moved relative to the drum when the drum is driven as rotated, as to sequentially wind the rubber strip on the drum.

Abstract: A tread rubber G has a short-fiber-mixed rubber portion 10 forming a grounding surface. In a region Y1 between an outer grounding end Eo and a tire equator C located outside of a vehicle when a tire is mounted to the vehicle, the short fibers f are inclined and oriented at an angle ? outward of the vehicle radially outward of the tire, and an angle ?1 of the short fibers f in the outer grounding end Eo is greater than an angle ?2 of the short fibers f in the tire equator C.

Abstract: A method of manufacturing a rubber component for a pneumatic tire which comprises a process of overlap-winding at least one rubber tape into a target cross sectional shape for the rubber component, wherein each rubber tape has a thickness of from 0.3 to 3.0 mm and a width of from 5 to 40 mm, and an inner surface and/or an outer surface of the rubber component are defined by a surface layer made of windings of the rubber tape which windings are overlapped by a width WJ less than 75% of the rubber tape width but more than 1.0 mm.

Abstract: A method and apparatus for forming a core of plies, belts and beads and for positioning the core in a mold for forming an elastomeric tire. The core is built up on a mandrel of the inner mold that is formed from hard foam core segments positioned between top and bottom hub plates, around a center hub that includes flow passages formed therethrough and through the hub plates. Plies for building the core are formed as a woven sleeve for passage along an expander cone and over the mandrel whereon a separator has been positioned, and a bead is passed over each sleeve end that receives a bead centering plate fitted through the sleeve, capturing the bead and positioning it on the mandrel side and provides for folding the plies end over the bead and up each mandrel side.

Abstract: In a method of making a pneumatic tire which comprises a tire main body and a tread rubber with axial edges, the inside diameter of the tread rubber being smaller at the axial edges than in the intermediate portion, the tire main body including an underlying component on which the axial edge of the tread rubber is stuck, the green tire is made by: making a raw tire main body including an underlying component; placing an annular raw tread rubber around the raw tire main body; swelling the raw tire main body by pressurizing the inside thereof; pushing the entire width of the raw tread rubber onto the swollen tire main body partially with respect to the tire circumferential direction; and conducting the circumferentially-partial pushing through the enter circumference of the raw tread rubber, whereby the axial edge of the raw tread rubber is stuck on the underlying component without being wrinkled.

Abstract: A retreading method wherein a base composition and a cap composition are applied to a carcass (10) as two ribbons (14) and (16) extruded from separate extruders (18) and (20). The ribbons (14) and (16) can be layered and applied to a ready-to-retread carcass (10) simultaneously or, alternatively, the base ribbon (14) can be applied to the ready-to-retread carcass (10) first and the cap ribbon (16) applied thereafter. The carcass (10), with ribbons (14/16) applied thereto, is then inserted into an enclosed heated mold (22) and cured to complete the retread.

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 system for manufacturing an elastomeric tire utilizing a separate formation of a package having a tire core shape and containing tire belts, plies and beads. The package is formed by a laying up of layers of pre-cure elastomer intradigitated with sections of porous fabric, where the fabric fibers are placed at desired crossing angles to one another, and the pre-cure elastomer layers are positioned therebetween as a sandwich, with the sandwich then cold rolled into the tire core shape. Inelastic hoop shaped beads are fitted to and encapsulated in the tire core side walls ends and, as required, an inelastic belt is fitted around the tire core tread area that is secured thereto as by cold rolling a layer of pre-cure elastomer thereover, completing the tire core package. The tire core package is fitted into a mold, preferably a spin casting mold, and is supported therein equidistant from the mold cavity walls to receive an elastomer sprayed therein as the mold is spun.

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 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: The invention relates to a method for producing a tire, especially a pneumatic tire for a motor vehicles. The method includes a stepwise build up of the tire with a layer which is as airtight as possible, at least one casing ply (3), horn profiles, bead cores, side walls as well as a belt assembly including a belt web, if required, a belt layer (13) in one or more parts and a tread (15). The rubber of the tire side walls is applied as an extruded rubber strip (8) in the form of a spiral with several adjacent or partially overlapping turns (28a) on the side walls of the carcass which is at least previously shaped and, if required, provided with at least parts of the belt assembly.

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: A process for producing a tire having an expandable chamber utilized for extending and retracting studs provided in the periphery of the tire. In one embodiment, a non-stick film is strategically positioned between the casing and the tread prior to curing the tread onto the casing. The interface at either side of the film forms the sides of an expandable chamber. The tread side of the chamber is inset and studs are affixed thereto. Expansion of the chamber extends the studs out of the inset and into engagement with a road surface. Alternative processes provide a channel in the tread and the expansion chamber formed in the channel.

Abstract: An apparatus for retreading tires is disclosed. The apparatus has a rotatable hub for the mounting of a buffed tire casing. The apparatus also has a cushion gum applicator that is configured to stretch a length of cushion gum onto a tire casing. Further, the apparatus has a tread dispenser that is configured to automatically dispense a length of tire tread based on the circumference of at least one of the tire casing and the tire casing plus the cushion gum. Further still, the apparatus includes a tread applicator that is configured to stretch the length of tire tread onto the cushion gum. The entire apparatus including the cushion gum applicator, the tread dispenser, and the tread applicator are integrated into a single tire bench machine.

Abstract: A method of manufacturing a pneumatic tire comprises making a rubber-coated cord-member by coating one or more cords with rubber, and making the tread reinforcement by putting together a plurality of the cord-members around a drum into a cylindrical network of the cords, so that the cords make a first array of cords inclining in one direction with respect to the tire equator and a second array of cords inclining in one direction which is opposite to the cords of the first array with respect to the tire equator. It is possible that the cord-members are woven. It is also possible that the cord-members are not woven and, in the crossings of the cords, one of the two cross cords is curved along the other cord.

Abstract: A method of building and transferring a tread 12 or a tread belt reinforcing assembly 14 on a building drum 10 is disclosed. The steps include applying at least one uncured tread component 12, 14 onto a radially collapsible building drum 10, inserting the at least one uncured tread component 12 and the radially collapsible building drum 10 into an open segmented mold 2 wherein a plurality of mold tread forming segments 4 are radially expanded; contracting the plurality of mold tread forming segments 4 pressing into the at least one uncured tread component 12, 14; collapsing the building drum 10; and removing the building drum 10 thereby transferring the at least one uncured tread component 12, 14 into the mold.

Abstract: A process for manufacturing, in one stage, a tire comprising a carcass reinforcement (1) which is radial in the sidewalls and oblique radially beneath a crown reinforcement (3), composed of at least two layers (31) and (32) of reinforcement elements (310) and (320) which are crossed from one layer to the next, wherein there is pre-shaped to a diameter D1 and by means of a sleeve of at least one shaping ply N, vulcanized and formed of reinforcement elements forming with the circumferential direction an angle &agr;1, laid on the building drum T of diameter D, at least the central part of a carcass reinforcement ply (1) formed of radial reinforcement elements (10) forming with the circumferential direction an angle ∓&bgr;1. There is laid on the central part at least one crown ply (31, 32) formed of reinforcement elements (310, 320) oriented relative to the circumferential direction at angles ±&ggr;1 (&mgr;&ggr;1), &ggr;1 being little different from &bgr;1.

Abstract: A method for manufacturing a belt structure of a vehicle tire includes the steps of preparing a belt assembly, cutting the belt assembly to obtain first and second substantially-continuous belt strips, supplying the first and second belt strips to at least one assembly drum, and superposing on the at least one assembly drum portions of the first and second belt strips to obtain a belt structure comprising radially-superposed portions of the first and second belt strips.

Abstract: Method and apparatus for making a tread-belt assembly for a pneumatic tire using a supply ramp to supply green rubber tread stock for application on a substantially cylindrical green rubber belt package; advancing the tread stock along the supply ramp toward the belt package; positioning at least a final portion of the supply ramp substantially along a plane tangent to an outer circumference of the belt package; and applying the tread stock to the outer circumference by moving a leading cut end of the tread stock from the supply ramp to the belt package along the plane tangent to the outer circumference. The green rubber tread stock is held from above for moving by inserting a plurality of transfer pins downward into both edges of the green rubber tread stock such that each transfer pin is angled toward a closest laterally outside edge.

Abstract: A method of making a pneumatic tire with a breaker and a band, comprises: applying a raw breaker material to a cylindrical drum; spirally winding a plurality of parallel band cords around the raw breaker material on the cylindrical drum so that angles of the windings are not more than 5 degrees with respect to the tire equator; and gradually increasing one of (1) an average density of the band cords in the tire axial direction and (2) an average tension of the band cords in the tire axial direction, from a center portion of the band towards each axial edge of the band during winding the band cords.

Abstract: An apparatus for retreading tires is disclosed. The apparatus has a rotatable hub for the mounting of a buffed tire casing. The apparatus also has a cushion gum applicator that is configured to stretch a length of cushion gum onto a tire casing. Further, the apparatus has a tread dispenser that is configured to automatically dispense a length of tire tread based on the circumference of at least one of the tire casing and the tire casing plus the cushion gum. Further still, the apparatus includes a tread applicator that is configured to stretch the length of tire tread onto the cushion gum. The entire apparatus including the cushion gum applicator, the tread dispenser, and the tread applicator are integrated into a single tire bench machine.

Abstract: A pneumatic tire comprises a spiral belt formed by spirally winding a cord(s) along a circumferential direction of a torus tread, wherein the spiral belt is comprised of at least one layer constructed with a combination of two different cords each having an initial tension of not less than 50 cN/cord.

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 tread rubber G has a short-fiber-mixed rubber portion 10 forming a grounding surface. In a region Y1 between an outer grounding end Eo and a tire equator C located outside of a vehicle when a tire is mounted to the vehicle, the short fibers f are inclined and oriented at an angle &agr; outward of the vehicle radially outward of the tire, and an angle &agr;1 of the short fibers f in the outer grounding end Eo is greater than an angle &agr;2 of the short fibers f in the tire equator C.

Abstract: A method for manufacturing a reinforcing structure for tyres 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: A process is disclosed for producing a vehicular pneumatic tire, in which, in order to produce and apply a preferably unvulcanized tread strip to a partial tire, which already has a cambered carcass and a ply packet radially outward therefrom, at least two strips of material, each consisting of a mixture of rubber and/or plastic, are applied to the partial tire. At least one strip of material is wound in numerous essentially adjoining windings running in the circumferential direction of the tire. In the case of two strips of material, these consist of different mixtures and, depending upon the desired characteristics of the tire, are arranged simultaneously or sequentially on different areas in the inner or the radially outer zone of the space occupied by the finished tread strip.

Abstract: The invention relates to a feeding device for strip-shaped tire components. The inventive device is situated in a conveying device for a tire construction drum. The feeding device comprises one or several storage means, feeding and cutting devices pertaining thereto as well as transport devices by means of which the cut tire components are transported to the tire construction drum. The transport devices which withdraw the tire component from the storage means and position said tire component under the cutting device and the transport devices which transport the cut tire component to the tire construction drum are configured as an interconnected one-piece transport system in a transport line. The transport system can be displaced between a rear cutting and feeding position and a support position that is moved to the front. The conveying devices are arranged in such a way that the one-piece transport system engages with the cutting devices in the rear position thereof.

Abstract: A method and a plant for manufacturing a belt structure of a green tire are described, wherein the belt strips (113a, 113b) which constitute the belt structure are produced in a substantially continuous manner immediately upstream of at least one assembly drum (13, 14). Such method and plant are integrated respectively in a method and in a plant for manufacturing a belt package and a crown structure incorporating the belt structure thus obtained. The method for producing the belt package provides for the subsequent formation on said belt structure of a rubber mixture layer incorporating a plurality of reinforcing cords (104), while the method for producing the crown structure provides for the subsequent assembly of a tread (105) on the belt package thus formed. The rubber mixture layer incorporating the reinforcing cords (104) and the tread (105) are both produced in a substantially continuous manner immediately upstream of at least one assembly drum (18).

Abstract: Disclosed is a method of manufacturing a pneumatic radial tire comprising the steps of feeding a strip material comprising a plurality of reinforcing cords and having a predetermined width from a standard measure feeding device which is adjustable in its feeding angle to a carrier conveyor, cutting the strip material to a predetermined size in sequence to form strip pieces while alternately moving the strip material and the carrier conveyor intermittently in synchronization with each other, transferring the strip pieces onto the carrier conveyor, forming a belt member having a length equal to a length L of a belt layer for one tire by butting the strip pieces against each other along their longitudinal edges, and using the belt member as the belt layer, wherein if a width of the strip material is A and the number of the strip pieces for forming the belt layer is N, an angle &thgr; for cutting the strip material to the predetermined size relative to a moving direction of the standard measure feeding device is