The Yokohama Rubber Co., Ltd.

Yukihisa Takahashi

In a tire vulcanization device and method, when a mold is closed, dividing walls disposed on an outer circumferential side of a container ring form a space with a container and hermetically block communication between the inside and outside of the container, and a center vent path communicating vertically through a center mechanism, a plurality of mold interior vent paths formed in the mold at intervals in the circumferential direction in a plan view, a container interior vent path formed in the container components and communicating between an opposing surface and a space, and the space are made to be in communication, and by an air suction machine disposed outside the container and connected to a lower end portion of the center vent path, unnecessary air present inside the mold is suctioned through the mold interior vent path and the container vent path that are in communication.

Tire vulcanization device and method

In a rubber temperature measuring device, a temperature sensor and a biasing member are disposed in an installation hole formed in a molding surface of a mold. The temperature sensor is biased by the biasing member and a temperature detecting unit at a tip end projects from the molding surface and is not in contact with the mold. The mold is closed and vulcanized in a state in which a green tire making contact with the temperature detecting unit presses the temperature sensor against biasing force of the biasing member and an opening portion of the installation hole is blocked by the temperature detecting unit. Temperature data detected by the temperature detecting unit is input to a control unit disposed outside the mold through a communication line extending in a communicating hole communicating with the installation hole.

Rubber temperature measuring device and rubber product manufacturing method

Provided are a method for producing a tire vulcanization mold and a maintenance method. A positioning member protrudes at a position corresponding to a position on a master mold surface. A positioning hole is formed by a tip end of the positioning member in a rubber mold to which the surface of the master mold is transferred. The tip end is embedded in the positioning hole so that a rear end protrudes from the surface of the rubber mold. The rear end is embedded in a plaster mold to which the surface of the rubber mold is transferred. A case is detachably fixed to the tip end protruding from the surface of the plaster mold. The case is cast into a mold to which the surface of the plaster mold is transferred and fixed. A valve body is inserted into the case from which the positioning member is removed.

Method for producing mold for tire vulcanization and maintenance method

Provided are a tire vulcanization device and a tire vulcanization method. A container ring is disposed on an outer circumferential side of segments mounted on outer circumferential surfaces of sector molds. A bolster plate is disposed above an upper plate mounted on an upper surface of an upper side mold. A green tire is placed in a sideways state on a lower side mold mounted on an upper surface of a lower plate. In a state where the bolster plate is moved downward by a pressurizing mechanism and maintained in a mold closed position, a container ring held slidably in a vertical direction with respect to the bolster plate by a connecting body is moved downward by pressurizing fluid supplied, and the sector molds are assembled in an annular shape to be closed with the upper side mold pressed against upper surfaces of the sector molds.

Provided are a method and a device for attaching a sound absorbing member to an inner face of a tire. In a state that an adhesive is interposed between a first face of a sound absorbing member and an inner face of the tire, the sound absorbing member is placed, and an expandable and contractible bag placed inside the tire is expanded, and the expanded bag presses a second face of the sound absorbing member to bond the first face to the inner face of the tire with the adhesive therebetween.

Method and device for attaching sound absorbing member to tire inner face

Provided is an attaching device and a method for attaching a band-like member to a tire inner surface. A holder that holds the band-like member in a wound state and a paddle are disposed in an inner portion of a tire, and a dispensed portion is pressure-bonded to the inner surface by repeatedly performing: a bonding operation in which a predetermined length dispensed from the band-like member in a wound state toward the inner surface is pressed, by moving the paddle close to the inner surface with no relative rotation of the tire in the circumferential direction with respect to the holder, and is pressure-bonded to the inner surface and a dispensing operation in which, after the bonding operation, the paddle is moved away from the inner surface, and together with relatively rotating the tire in the circumferential direction, a new dispensed portion is formed.

Attaching device and method for attaching band-like member to tire inner surface

In a tire vulcanization device, a vertical position of a container ring is locked at a closed position by a lock mechanism. A pressurizing mechanism is operated so as to decrease a vertical gap between an upper plate and a lower plate. The lower plate is moved upward so that a segment is moved toward a center mechanism by a container ring and sector molds are assembled in an annular shape. A state where a predetermined vertical gap is formed between the container ring and a bolster plate by a vertical connection mechanism is created. An upper side mold disposed on a lower surface of the upper plate is closed by being pressed against an upper surface of each of the sector molds while maintaining a state where the sector molds are assembled in an annular shape.

Tire vulcanizing apparatus and method

A tire vulcanization bladder assembly is manufactured by placing a first ring part on a base stage installed on leg parts in a periphery of a first end opening of a bladder; sandwiching a first clamp part of the bladder, the bladder being in an upright position with the first clamp part on a lower side and a second clamp part located in a periphery of a second end opening of the bladder on an upper side, by the first ring part, thereby attaching the first ring part to the bladder; inserting an inside ring member of a second ring part into the bladder from above on an inside ring member of the first ring part; moving the inside ring member of the second ring part upward relative to the bladder to a position of the second clamp part; and attaching the second ring part to the second clamp part.

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Hiratsuka, Japan

Yukihisa Takahashi