Patent application number | Description | Published |
20080265456 | Method and System for Extruding Rubber Strip for Tire Constitutive Members - A method for extruding a rubber strip for tire constitutive members, allowing the facility to be made compact and having excellent energy efficiency, and a strip rubber extrusion system for carrying out the method. In the method for extruding a rubber strip for tire constitutive members according to the invention, the rubber to be extruded from an extruder ( | 10-30-2008 |
20100000661 | METHOD OF PRODUCING A GREEN TIRE, DEVICE FOR TURNING A CARCASS BAND USED THEREFOR AND APPARATUS FOR PRODUCING A GREEN TIRE - A device for turning a carcass band is used for a method of producing a green tire which enable to securely wrap and hold end portions of a carcass band, which is to be wrapped around a bead ring, as desired without a need for restraining the end portions on the bead ring by means of an auxiliary restraining member or the like. In this device, anvil rings having diameters smaller than that of the rigid core are arranged adjacent to respective side portion of a rigid core having an outer contour corresponding to an inner contour of a product tire. The anvil rings are fixed on a rotational driving shaft of the rigid core, and are provided with two annular grooves on their circumferences. Rotation disks for pressing a carcass band into the annular grooves of the anvil rings are arranged so as to approach to and recede from the anvil ring. | 01-07-2010 |
20100212812 | METHOD AND DEVICE FOR PRODUCING GREEN TIRE - The present invention aims at improving balance and uniformity of a tire, with simplifying facilities, reducing space for the facilities and suppressing shape flows and generation of air bubbles. An extruder is provided for supplying rubber ribbon immediately after extrusion to a second molding drum, so that the rubber ribbon is spirally wound around the second molding drum plural times to structure a portion of tread (a cap layer), whereby the rubber ribbon which is relatively hot and soft is wound around the second molding drum. As a result, the rubber ribbon easily deforms compliant to the second molding drum. Further, no joint portion of starting and terminal ends as is observed in the prior art exists, whereby thickness of the tread is even in the circumferential direction. | 08-26-2010 |
20110005660 | Method and apparatus for manufacturing unvulcanized tires - 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. When the second guide roller is driven to achieve a parallel movement integrally with the first guide roller, the ribbon-like element contacts successively with the second and first guide rollers in this sequence, before it is supplied to the outer surface of the support member. | 01-13-2011 |
20110100531 | METHOD AND APPARATUS FOR PRODUCING GREEN TIRES - 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. | 05-05-2011 |
20130000809 | TIRE AND METHOD FOR FABRICATING BEAD MEMBER - An object is to improve the durability of the stiffener having a hard rubber member and a soft rubber member formed on the radially inner side and the radially outer side by laminating rubber strips. A tire includes bead cores, stiffeners provided on the outer circumferences of the bead cores, and a carcass ply. Ends of the carcass ply are disposed on the stiffeners. Each stiffener includes an inner rubber portion on the radially inner side, an outer rubber portion on the radially outer side, and a cover tape. The inner rubber portion is formed by laminating a first rubber strip. The outer rubber portion is formed by laminating a second rubber strip. The second rubber strip is composed of rubber having a lower rigidity than the inner rubber portion. The cover tape covers a part of the stiffener that comes into contact with the end of the carcass ply. | 01-03-2013 |
20130168008 | APPARATUS FOR JOINING TIRE CONSTITUENT MEMBER AND METHOD FOR MANUFACTURING TIRE CONSTITUENT MEMBER - When end portions of a tire constituent member are to be brought into contact with each other and joined together, the end portions to be joined together are prevented from being caught by a pair of joining rollers. The end portions of the tire constituent member are arranged opposite to each other. The pair of joining rollers is made to roll on the end portions of the tire constituent member and the end portions are brought into contact with each other and joined together by the joining rollers. An entanglement preventing member is moved together with the pair of joining rollers and the end portions of the tire constituent member in front of the joining rollers. The end portions of the tire constituent member are pressed by the entanglement preventing member, and entanglement of the end portions is prevented. | 07-04-2013 |
20130284378 | RUBBER MEMBER JOINING DEVICE - End portions of a sheet-shaped rubber member are manually and firmly joined together. A pair of opening/closing members is arranged to sandwich and move along the end portions. An opening/closing mechanism opens/closes the pair of opening/closing members between an open position and a closed position where the end portions are joined together. A pair of guiding rollers is provided to one opening/closing member and guides each of the end portions to a joining position. A pressing roller is provided to the other opening/closing member and presses each of the end portions onto the guiding roller. A pair of joining rollers is provided to the pair of opening/closing members, respectively, and sandwiches each of the end portions guided by the pair of guiding rollers. The joining rollers roll on each of the opposing end portions and abut and join the end portions to each other. | 10-31-2013 |
Patent application number | Description | Published |
20080257478 | Tire Molding Apparatus with Folding Mechansim and Method of Folding in Molding Tire - A tire molding apparatus folds the periphery of bead portions at a low speed with an increased pressing force. The tire molding apparatus has folding mechanisms including fingers to fold the tire component to the periphery of bead cores. Folding fingers ( | 10-23-2008 |
20090020200 | PNEUMATIC TIRE FOR MOTORCYCLE AND METHOD OF PRODUCING SAME - The present invention aims to improve the durability of a motorcycle pneumatic tire in which a tread portion is formed by a rubber strip-laminating body and to provide a method of producing such tire. | 01-22-2009 |
20090291618 | TIRE GRINDING METHOD AND GRINDING DEVICE - In a grinding device, first, an eddy-current-sensor detects a distance from the eddy-current-sensor to an outer peripheral surface of a belt layer while a tire to be retreaded held by a pair of half rims is caused to rotate. Thus, an eccentricity amount and an eccentricity direction of the tire to be retreaded with respect to a device axial center, corresponding to the phase of the tire to be retreaded, can be respectively determined, so position control signals corresponding to the phase, eccentricity amount and eccentricity direction of the tire to be retreaded can be generated. Next, on the basis of the position control signal, a carriage causes a rasp to be moved in a radial direction with respect to the tire to be retreaded along the radial direction whose center is a device axial center, and the rasp grinds a tread surface of the rotating tire to be retreaded. | 11-26-2009 |
20090294026 | METHOD FOR MANUFACTURING A TIRE AND A TIRE CURING MOLD - A method for manufacturing a tire and a tire curing mold, capable of preventing a failure that the turned-up portion is moved apart from the main portion of the carcass of a green tire on a rigid core, are provided. Each bead-holding ring to hold the bead portion | 12-03-2009 |
20110030880 | METHOD FOR MANUFACTURING UNVULCANIZED TIRE AND APPARATUS FOR MANUFACTURING THE TIRE - When a stitching roll is allowed to act on a tread rubber member to attach the tread rubber member to an unvulcanized tire, lateral displacement of the tread rubber member is prevented. In a method for manufacturing unvulcanized tires by attaching a tread rubber composite ( | 02-10-2011 |
20110079343 | METHOD AND DEVICE OF MANUFACTURING TIRE - A cord reinforcing layer | 04-07-2011 |
20110192526 | TIRE MANUFACTURING APPARATUS AND TIRE MANUFACTURING METHOD - 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. | 08-11-2011 |
20130186537 | TIRE SURFACE PRINTING METHOD AND TIRE PRINTING DEVICE - A tire printing device includes a printer head ( | 07-25-2013 |
20140022302 | TIRE PRINTING DEVICE AND METHOD FOR PRINTING ONTO TIRE SURFACE - The present invention aims to provide a technique that prints characters and patterns clearly onto a tire surface without complicated operations. A tire printing device of the present invention includes a printer head that ejects and applies a coating material onto a tire surface, a widthwise moving unit that moves the printer head along the width direction of the tire, a radial moving unit that moves the printer head along the radical direction of the tire, and a swinging unit that swings the printer head around the axis along the circumferential direction of the tire. | 01-23-2014 |