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 |