Sumitomo Rubber Industries Limited

Nakata Engineering Co., Ltd.

Hiroyuki Onimatsu

Kiyoto Maruoka

Naoyasu Nakao

Noboru Ishihara

Norio Hayashi

Hiroyuki Takahashi

Kazuya Suzuki

Makoto Igarashi

Shunsuke Yano

Kaoru Kubota

Youjiro Miki

Kimitaka Yoshimura

Santa Momii

Kenichi Nagai

Takaji Arai

Yu Nosaka

Nozomu Nishioka

Takeshi Kawazu

Toshiyuki Yamagiwa

Hiroshi Ihara

Takeshi Nakatogawa

Shinichi Kitani

A tire vulcanizing apparatus includes a mold having a tread mold including a plurality of segments arranged in a tire circumferential direction, and upper and lower side molds. Each of the segments includes an upper segment portion and a lower segment portion which are divided up and down. The apparatus includes a segment supporting unit which supports the upper segment portion and the lower segment portion so as to be movable to the same side in a tire radial direction and opposite sides to each other in a tire axial direction.

Tire vulcanizing apparatus and tire vulcanizing method

To improve durability by preventing breakage of each roller piece for a long time. It is a pressure roller for pressing a surface of a tire member made from an unvulcanized rubber member. The pressure roller has a support shaft and a plurality of elastically deformable roller pieces supported by the support shaft and arranged in the axial direction of the support shaft. Each roller piece has a pressing surface for contacting with the surface of the tire member. Each roller piece is independently rotatably supported by the support shaft.

Pressure roller for shaping tire member

A device for manufacturing a multiple layer rubber strip including a first rubber strip and a second rubber strip, the device includes a first rubber extruder for extruding the first rubber strip, a second rubber extruder for extruding the second rubber strip, a first conveyor for conveying the first rubber strip extruded from the first extruder to a downstream side in a convey direction, and a second conveyor for conveying the second rubber strip extruded from the second extruder to a downstream side in the convey direction. The second conveyor is located upwardly of the first conveyor and has a downstream conveyor end which positions above a conveying surface of the first conveyor such that the second rubber strip delivered from the downstream conveyor end meets and overlaps the first rubber strip on the first conveyor at a joining location to form the single multiple layer rubber strip.

Device and method for manufacturing multiple layer rubber strip

To reliably and efficiently make foreign matters adhered onto a green tire formed by a strip winding method. It comprises a raw data acquiring step Sa in which raw three-dimensional data Dabout an examination surfaceare created through rotation of a green tire T and through irradiation with sensor lightL in an X direction by a two-dimensional displacement sensor; an averaging processing step Sb in which processed three-dimensional data Dare obtained by averaging processing the raw three-dimensional data D; and an imaging step Sc in which the distance data z in the processed three-dimensional data Dare each binarized, and an image is created from the binarized processed three-dimensional data D. The widths Wx and Wy of a range K of the averaging process are set to be greater than a spiral pitch P of a rubber strip G and less than a width Gw of the rubber strip G.

Method for determining adhesion of foreign matter on green tire

The present invention forms bead apex rubber with good precision on the outer circumferential surface of the bead core. A molding process, in which unvulcanized rubber is made to flow into a bead apex molding chamber that is surrounded by surfaces that include the outer circumferential surface of a circular bead core and the bead apex rubber is formed directly on the outer circumferential surface of the bead core that is rotating around the core axis, is provided. The molding process comprises: a tip forming step that forms the leading end of the bead apex rubber; a middle section forming step that sequentially forms the bead apex rubber to be continuous with the leading end; and a joining step to join the back end and the leading end of the bead apex rubber by inflowing the unvulcanized rubber therebetween.

Bead apex rubber-forming method, and bead apex rubber-forming device

In a gear pump device for rubber extrusion, prolongation of the maintenance intervals is intended by preventing rubber scorch occurring at the gear support-shaft portion. It has a bushing ringinserted in a gear-housing boreof a housing. The bushing ringrotatably supports a support-shaft portionof a gearaccommodated in the gear-housing bore. The bushing ringhas a bearingand a sealing meansbuilt-in. The sealing meansincludes a seal ringof which cross section is ]-shaped and which has a first lip portioncontacting with the outer peripheral surface of the support-shaft portion, a second lip portiondisposed outside thereof in the radial direction, and a side wall portionconnecting between outer ends in the axial direction, of the first and second lip portions

Gear pump device for rubber extrusion

A tire vulcanizing apparatus includes a vulcanization mold including a lower mold and an upper mold to define a tire mold cavity for vulcanizing a green tire together with a rigid core on which the green tire is formed, a base portion, a lower plate to which the lower mold is attached, the lower plate supported by the base portion, a first ring having a circular shape with a center corresponding to an axial center of the vulcanization mold and arranged between the base portion and the lower plate, an upper plate to which the upper mold is attached so as to face the lower mold up and down, and a lifting device for moving the upper plate up and down between a lower location to close the vulcanization mold and an upper location in which the upper mold positions opening the vulcanization mold.

Tire vulcanizing apparatus

A method for manufacturing a tire T comprises a step for forming a green tire on the outside of a rigid core mold, a step for vulcanization-molding and obtaining a tire-accompanying rigid core mold G, a step for setting, at an assembly station P, a coretaken out from the tire-accompanied rigid core mold G, and a removal and assembly step for removing one core segmentfrom the tire T by moving in inwardly in the tire radial direction from the tire-accompanying rigid core mold G and mounting it on the coreset at the assembly station. The removal and assembly step is performed for every core segment in the tire, whereby a rigid core moldis assembled at the assembly station P, while removing the rigid core moldfrom the tire T.

Rigid core mold removal device and tire manufacturing method

In order to make a tire factory more compact, this tire manufacturing system comprises a material storage zone, a green tire formation zone, a vulcanization zone, and an inspection and discharge zone. The green tire formation zone has a track and a plurality of work stations arranged along the track, where a green tire is formed by assembling a tire constituent member to an outer surface of a rigid core moving on the track at each of the work stations. A member assembly device that forms the tire constituent member by attaching a member material set for each of the tire constituent members to a surface of the rigid core, under an attachment condition determined according to size of the rigid core. The member assembly devices being arranged at an outer peripheral side of the square-cornered U-shaped bending track and along the lateral track parts. The material storage zone is arranged adjacent to one lateral side of the square-cornered U-shaped bending track. The vulcanization zone is arranged adjacent to the other lateral side of the square-cornered U-shaped bending track. The inspection and discharge zone is arranged adjacent to the other lateral side of the vulcanization zone.

Tire manufacturing system

An apparatusfor mounting an annular tread ring R on an outer peripheral surface TS of a tire base T, which includes a tire base holding sectionwhich is movable between a first position Pand a second position Pwhile holding the tire base T, and a tread ring mounting sectionfor mounting the tread ring R on the outer peripheral surface TS of the tire base T. The tread ring mounting sectioncomprises a tread holderfor holding the inner circumferential surface of the tread ring R, and a tread pushing-out devicefor pushing out the tread ring R in the axis direction. At the second position P, after placing the tread ring R on the outer peripheral surface TS of the tire base T in the tire base holding section, the tread ring mounting sectionpushes out the tread ring R from the tread holdertoward the first position Pby the tread pushing-out device. And the tire base holding sectionmoves toward the first position Pat the same speed as the pushing-out speed of the tread pushing-out device. Thereby, the tread ring R is mounted on the outer peripheral surface TS of the tire base T.

Apparatus for mounting tread ring on tire base and method for manufacturing retreaded tire

The purpose of the present invention is to efficiently vulcanize a green tire. This tire vulcanizing method and tire manufacturing method for vulcanizing a green tireA formed on an outer surfaceof a rigid core by putting in a vulcanizing mold together with the rigid coreA. The method comprising: a preheating step Sof preheating the rigid core accompanied by green tireA using a preheating devicearranged adjacent to the vulcanizing moldprior to vulcanizing; a vulcanizing step Sof vulcanizing the green tire accompanied by preheated rigid coreA using the vulcanizing mold; and a cooling step Sof cooling the rigid core accompanied by vulcanized tireB which has a vulcanized tireB made by vulcanizing the green tireA by use of a cooling device

Tire vulcanizing method and tire manufacturing method

Provide a manufacturing method and a manufacturing device for a rubber strip capable of stably manufacturing a tape-like rubber strip of unvulcanized rubber. The rubber strip manufacturing device () for manufacturing a tape-like rubber strip (G) made of unvulcanized rubber is characterized in including: a rubber extruder () comprising a rubber extruder main body () having a screw shaft () for kneading and pushing the unvulcanized rubber toward an outlet opening (), and a gear pump () connected to the outlet opening () of the rubber extruder main body () and rotary-driven by a first motor (M); a calender head () comprising a pair of calender rollers () for rolling a shaped rubber body extruded from the rubber extruder () to obtain the rubber strip (G); and a control unit () for controlling a second motor (M) for rotary-driving the calender rollers in conjunction with the first motor (M).

Rubber strip manufacturing device and manufacturing method

In order to improve tire production efficiency, there is provided a conveying apparatus that conveys a tire-accompanied rigid core in a lying-sideways position to a loading position P, a preheating device for preheating at a preheating position P, a vulcanizing device for vulcanizing at a vulcanizing position P, a cooling device for cooling at a cooling position P, and a transferring device. The transferring device has a turning arm capable of turning horizontally around an axis of turning and movable up and down, and transfers the tire-accompanied rigid core from and to the conveying device, the preheating device, the vulcanizing device, and the cooling device at the positions Pto P. The loading position P, the preheating position P, the vulcanizing position Pand the cooling position Pare arranged on the same circumferential line centered on the axis of turning.

The present invention can save space. A rubber extrusion device () containing a rubber extruder () for kneading rubber and extruding same from a discharge port (), and a gear pump () connected to the discharge port () of the rubber extruder (). The rubber extruder () has a cylinder part (), which houses a rubber extrusion screw (), above the floor surface on which the rubber extruder () is placed. The gear pump () contains an electric motor (), a decelerator () linked to the electric motor (), and a gear pump main body () linked to the decelerator (). A pair of gears () which meshes with one another is installed in the gear pump main body (). The electric motor () and the decelerator () are disposed in a space below the gear pump main body () or the cylinder part (). Moreover, the output shaft () of the decelerator and one of the gears () are linked by means of a wrapping transmission means.

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Kobe, Japan

Hiroyuki Onimatsu