Patent classifications
B29D30/1635
Guiding device
Disclosed is a guiding device having a guide roller that is rotatable about a roller axis and that has an exterior guide surface extending in a circumferential direction about the roller axis, wherein the guide roller includes a plurality of roller segments juxtaposed in an axial direction along the roller axis for forming the exterior guide surface, wherein the plurality of roller segments are movable relative to each other to enable the guide roller to be positioned in a maximum bend state in which the roller axis extends along an arc, wherein the plurality of roller segments are interlocked to rotate together about the roller axis in a maximum bend state, wherein the plurality of roller segments extend over an arc length along the arc of the roller axis, wherein the arc length is at least ninety degrees in the maximum bend state.
PNEUMATIC TIRE AND METHOD FOR MANUFACTURING PNEUMATIC TIRE
A pneumatic tire excellent in high speed stability and turning ability is provided. In a band of a tire, a center portion located in an axial center has a helically wound structure in which a first band body including a first cord is wound. A shoulder portion located on an axial outside of the center portion has a meshed structure formed by a second band body including a second cord. The shoulder portion includes a plurality of first portions, a plurality of second portions and a plurality of third portions. Each first portion is inclined and extends from an axially inner end of the shoulder portion to an axially outer end of the shoulder portion. Each second portion is inclined in an opposite direction from the first portion and extends from the axially inner end of the shoulder portion to the axially outer end of the shoulder portion.
GUIDING DEVICE
Disclosed is a guiding device having a guide roller that is rotatable about a roller axis and that has an exterior guide surface extending in a circumferential direction about the roller axis, wherein the guide roller includes a plurality of roller segments juxtaposed in an axial direction along the roller axis for forming the exterior guide surface, wherein the plurality of roller segments are movable relative to each other to enable the guide roller to be positioned in a maximum bend state in which the roller axis extends along an arc, wherein the plurality of roller segments are interlocked to rotate together about the roller axis in a maximum bend state, wherein the plurality of roller segments extend over an arc length along the arc of the roller axis, wherein the arc length is at least ninety degrees in the maximum bend state.
Method of Manufacturing Pneumatic Tire and Forming Device for Pneumatic Tire
In a method of manufacturing a pneumatic tire, a placement unit is moved relative to a forming drum in a drum circumferential direction to repeatedly perform a one-side step of delivering a reinforcing wire in a folded back state in a length from a central portion toward one side in the width direction of the forming drum and compression bonding the reinforcing wire to an innerliner of an outer surface of the forming drum, and after delivering the reinforcing wire in the length toward the one side in the width direction as described above, perform an other-side step of delivering the reinforcing wire in a folded back state in a length from the central portion toward an other side in the width direction of the forming drum and compression bonding the reinforcing wire to an outer surface of the innerliner.
METHOD OF MANUFACTURING TIRE, FORMING SYSTEM FOR TIRE, AND TIRE
A method of manufacturing a tire including a reinforcing cord continuously wound a plurality of times in a tire circumferential direction or wound in the tire circumferential direction while continuously extending in a tire width direction.
A preceding carcass cord from one feeding unit is used to form a carcass layer while being fed to a forming drum, and a leading edge portion of a next carcass cord is paid out from another feeding unit in advance. When a predetermined length of the preceding carcass cord is fed, a splice mechanism is used to join the leading edge portion of the next carcass cord to the preceding carcass cord to make the leading edge portion of the next carcass cord continuous with the preceding carcass cord. Then, with the next carcass cord fed to the forming drum, formation of the carcass layer is continued to complete the carcass layer.
Pneumatic tire and method for manufacturing pneumatic tire
A pneumatic tire excellent in high speed stability and turning ability is provided. In a band of a tire, a center portion located in an axial center has a helically wound structure in which a first band body including a first cord is wound. A shoulder portion located on an axial outside of the center portion has a meshed structure formed by a second band body including a second cord. The shoulder portion includes a plurality of first portions, a plurality of second portions and a plurality of third portions. Each first portion is inclined and extends from an axially inner end of the shoulder portion to an axially outer end of the shoulder portion. Each second portion is inclined in an opposite direction from the first portion and extends from the axially inner end of the shoulder portion to the axially outer end of the shoulder portion.
Strip rubber adhering apparatus
A strip rubber adhering apparatus includes a rotating drum; an extruder configured to extrude strip rubber of a shape having an apex portion in cross section toward the drum; a pressure bonding roller configured to press a surface of the strip rubber on the apex portion side in the direction of the drum, and adhere the surface of the strip rubber on a side opposite to the apex portion side to the drum; and a blowing apparatus configured to supply wind toward the surface of the strip rubber on the apex portion side in the vicinity of a position of adhesion of the strip rubber with respect to the drum, wherein the drum and the extruder are relatively movable in the direction of axis of the drum with respect to each other.
GROOVED-CORE TOOLING FOR MANUFACTURING PNEUMATIC TIRES REINFORCED BY STAYS PASSING THROUGH THE INFLATION CAVITY
The tooling is suitable for manufacturing a toroidal tire that has a crown, a first annular bead and a second annular bead, together with a first sidewall and a second sidewall. The, tool has a core which is provided with groove-type passages that are suitable for receiving reinforcing elements, referred to as stays. The stays are designed to be permanently incorporated into the structure of the tire and to each extend in the cavity of the tire, thereby connecting a crown anchor point situated in the crown of the tire to a lateral anchor point situated in one of the sidewalls or beads of the tire.
Strip-winding method and strip-winding apparatus
The strip-winding method, includes: a first step of supplying a strip to a wound body including an inclined part; and a second step of moving a winding roller along an outer circumferential surface of the wound body within one plane, the winding roller being capable of pressing the strip on the wound body, and of winding the strip on the outer circumferential surface of the wound body. In the second step, the roller inclination angle of the rotational axis line of the winding roller with respect to the one plane is changed, and the roller inclination angle at the time the strip is wound around the inclined part is set to be greater than the roller inclination angle at the time the strip is wound around a maximum diameter position of the wound body.
Tire building applicator members and systems
An applicator assembly for applying a cord to a tire-building surface that rotates during tire construction. The applicator assembly includes an applicator member to apply the cord. A first rotary device rotates the applicator member about a first axis that is transverse to the surface. A first translation device moves the applicator member in a first linear path relative to the surface. The applicator member may include a roller and/or a resilient member. A second rotary device may rotate the applicator member and the first rotary device around a second axis substantially perpendicular to the first axis. A second translation device may move the applicator member, the first rotary device, the second rotary device, and the first translation device. A system for applying the cord to a core member may further include a spindle to rotate the core member about the axis of rotation.