Mitsubishi Jukogyo Kabushiki Kaisha

The Yokohama Rubber Co., Ltd.

Jiro Agawa

Yoshinori Miyamoto

Hidemasa Sato

Keizo Yamashita

Toru Aihara

Kazuo Mogi

Toshinari Matsumoto

Nobuhiko Irie

Naoki Sasaki

Minoru Kimura

Mikio Aramaki

Seiki Tanaka

Shinichiro Hirano

Hidemasa Satoh

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

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

In an automated warehouse for storing cartridge tapes, a plurality of the cartridge tapes are accommodated in horizontal cases as arrayed in rows and columns. A plurality of shelves each adapted to support a plurality of the horizontal cases thereon as aligned horizontally, are in turn supported from a rack in a cantilever fashion at a plurality of respective levels. A robot having an arm is movable along the front of the rack. The arm is rotatable in a plane parallel to the surfaces of the shelves. Preferably, the arm of the robot is extensible and retractable and also is vertically movable, so that a cartridge picker mounted at the tip end of the arm can easily access each of the cartridge tapes accommodated in the automated warehouse.

Automatic warehouse for cartridge tapes

An improved apparatus for sticking a metal cord strip onto a lower component layer of a tire held on a tire forming drum is disclosed. Left and right roller brackets having a plurality of guide rollers respectively mounted on opposed surfaces thereof are disposed on the left and right sides of a conveying passageway of a metal cord strip. Roller brackets moving device is adapted to move the respective roller brackets by the same amount in the directions of making them approach to or separate from a center line in the conveying direction according to the width of the metal cord strip. Left and right outlet guide plates and left and right magnets are mounted to the end portions on the downwstream side in the conveying direction of the respective roller brackets. Left and right magnet moving device are adapted to move the respective magnets beween attracting positions on the backside of the respective outlet guide plates and retreating positions separated from the respective outlet guide plates. Left and right press rollers are adapted to be lowered by press roller raising/lowering device to press the leading and trailing end portions of the metal cord strip against the tire forming drum.

Apparatus for sticking a metal cord strip

The present invention is drawn to an improvement in a joining device for joining ends of cord reinforced belt-shaped materials, in which elastic belt-shaped material having a large number of cords embedded therein at equal intervals with a predetermined inclination is cut in the direction of the cords into a length somewhat shorter than an outer circumferential length of a drum to be fed with the belt-shaped material, the cut length being wrapped around the outer circumference of the drum, and the opposite cut end planar surfaces of the material being drawn towards each other and butt-joined by a splicer. The improvement resides in a splicer having a lateral movement device that is movable in a direction parallel to a shaft of the drum, a press device supported by the lateral movement device, and a splice roller pivotably supported at the bottom end of the press device. Also, the improvement resides in the splice roller being in the form of a roller tapered in its radial direction, spring discs fixedly secured to the opposite sides of the tapered roller in which radial slits extend in their outer circumferential portions, and the outer circumferential portions tapered inclined towards the tapered roller. The device of the present invention maintains constant the force for drawing opposed ends of the wrapped material on the drum towards each other.

Growing community of inventors

Nagasaki, Japan

Jiro Agawa