Mitsubishi Jukogyo Kabushiki Kaisha

The Yokohama Rubber Co., Ltd.

Bando Chemical Industries, Inc.

Yoshinori Miyamoto

Jiro Agawa

Hidemasa Sato

Keizo Yamashita

Toru Aihara

Kazuo Mogi

Toshinari Matsumoto

Akira Hasegawa

Hideaki Katayama

Masayoshi Kubo

Megumi Yamanaka

Kenji Tokunaga

Koichi Takeuchi

Minoru Kimura

Naoki Sasaki

Hisanobu Inada

A belt-shaped member cut into a predetermined length is fed from a feeding devices to a tire forming drum and is wound on its cylindrical peripheral surface. Center portions of the opposite ends of the belt-shaped member are pushed to be joined to each other and the side portions of at least one of the opposite ends of the belt-shaped member are held by upper and lower holding pawls. Such holding pawls are swung along an arcuate path so that both side portions of the opposite ends of the belt-shaped member are drawn near each other to abut against each other. The abutting end portions are pushed toward the peripheral surface of the drum by pushing devices for joining them together.

Method and apparatus for joining together the opposite ends of a

Apparatus for joining together the opposite ends of a belt-shaped member

A method and apparatus are provided for positioning sheets of material on a belt feeder for transporting the material through a cutter toward a tire-processing apparatus. The material has a front-edge portion which is centered by using edge-position control, and side portions which are centered by using center-position control. Also, the material, as cut, will have a rear-edge portion, the centering position of which is controlled by edge-position control.

Belt feeder centering method and apparatus

An auto-splice device includes a cutting conveyer on which a sheet is cut to produce a fabric, a vacuum take-out unit for taking the fabric from the cutting conveyer onto a take-out conveyer, and a splice mechanism for splicing the fabric to another fabric on the take-out conveyer. A sheet end position measuring unit controls the location at which the fabric is held by the vacuum take-out unit.

Auto-splice device and method

A tire building system comprises a band drum, a shaping drum, and a belt forming machine having two oscillating or rotating belt drums, in which the band drum and the shaping drum are arranged on the same axis in opposing relationship, a band transfer is disposed therebetween on the axis in such a manner as to reciprocate, the belt forming machine is arranged in parallel to the axis, and a belt transfer is disposed between the belt drum and the shaping drum in such a manner as to move in the axial direction and the direction normal to the axis.

Tire building system

Auto-splice device

Apparatus for transferring and setting bead part assemblies for tires

Tire building apparatus including two belt drums

The present invention aims to provide a tread pickup device which can pick up a tread on a truck reliably without manpower. The device comprises a plurality of short first forks for scooping up a front edge of the tread placed on the truck and holding the tread, long second forks which are arranged adjacent to the first forks and inserted throughout the total width of the tread, and a mechanism for raising and moving the first and second forks together with the tread.

Tread pickup device

An object of the present invention is to provide a tread centering device which automatically detects the position of tread center and holds it in a straight form even when the center of tread is not positioned in a straight form. The device mainly comprises a plurality of detectors for detecting a groove for centering the tread, a holding plate which is inserted into the detected groove, and a mechanism which moves said holding plate transversely to align said groove in a straight form.

Tread centering device

An apparatus joins opposite ends of a tread on a rotary drum in a tire making machine. Besides the rotary drum, the apparatus includes a conveyor having two lateral endless loops and a guide in the form of rollers interposed between the loops. The conveyor is disposed upstream of the rotary drum. Clamping mechanisms are provided to clamp the respective sides of the tread at a rear end thereof to the endless loops of the conveyor, respectively. A tread placed on the endless loops of the conveyor is maintained in relative position by the guide. The actual length of the tread on the conveyor is measured. The front end of the tread is adhered to the rotary drum and the opposite sides of the tread at the rear end thereof are clamped to the conveyor. The conveyor and drum are then driven at appropriate speeds based on the length of the tread to cause the ends thereof to be joined on the drum. Movable grippers can be provided to stretch the rear end of the tread at the sides thereof into abutment with the front end.

Apparatus for joining a tread in a machine for making a tire

A cutting device for use in cutting a cylindrical material around a mandrel into annular bodies of the desired width. This device has a first moving table to move in the axial direction of the mandrel, a second moving table to move on the first moving table in the radial direction of the mandrel, a cutter support carrying a first cutter adjustable in position in the radial direction of the mandrel and/or a second cutter adjustable in the axial direction of the mandrel, and a control unit with a device for detecting the position of each moving table, a device for receiving output signals from the detecting device and comparing the position with position data set beforehand and a driving circuit to move each moving table according to output signals from the comparing device.

Cutting device for cutting an annular body into belts

For the purpose of pressurizing and holding the pressure in a pressurizing hydraulic cylinder is a hydraulic vulcanizing press, a pneumatic booster (more particularly, a pneumatically operated hydraulic pressure booster) for supplying a desired hydraulic pressure to the hydraulic cylinder is provided in a hydraulic circuit on a pressurizing actuation side of the pressurizing hydraulic cylinder. In addition, in the pneumatic input circuit for the pneumatic booster is provided a switching device for switching a pressurized air fed to the pneumatic booster between a high pressure air for boosting a hydraulic pressure to a desired hydraulic pressure and a low pressure air for holding the desired hydraulic pressure after the desired hydraulic pressure has been attained.

Growing community of inventors

Nagasaki, Japan

Yoshinori Miyamoto