Mitsubishi Jukogyo Kabushiki Kaisha

The Yokohama Rubber Co., Ltd.

Hidemasa Sato

Jiro Agawa

Yoshinori Miyamoto

Keizo Yamashita

Toru Aihara

Kazuo Mogi

Toshinari Matsumoto

Naoki Sasaki

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 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

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 band conveying device with a vacuum attraction mechanism comprises a base frame, a traveling carriage movable on the base frame and a plurality of band holding units arranged in a row and provided on the traveling carriage perpendicularly with respect to a traveling direction thereof. A plurality of vacuum pads for attracting and holding a band with a vacuum are arranged in an annular form and attached to the band holding units. The vacuum pads are divided into the two vacuum systems. Each of at least two vacuum systems is provided with a vacuum pressure switch and an electromagnetic valve for shutting off its vacuum system when its degree of vacuum decreases below a given level.

Band conveying device with vacuum attraction mechanism

An automatic joining apparatus for automatically joining an attachment start edge and an attachment finish edge of a carcass play cut into a length somewhat shorter than a circumferential length of a former drum and wound around the former drum, is disclosed. The apparatus comprises a pair of magnet-containing drive rollers movable in the axial direction of the former drum while being held in contact with the proximity of the attachment start edge of the carcass ply and the proximity of the attachment finish edge thereof to join the attachment start edge and the attachment finish edge together, and a pair of gathering rollers movable in the axial direction of the former drum behind the magnet-containing drive rollers while being held in contact with the proximity of the attachment start edge and the proximity of the attachment finish edge to join the attachment start edge and the attachment finish edge together.

Growing community of inventors

Nagasaki, Japan

Hidemasa Sato