Toshiba Kikai Kabushiki Kaisha

Nippon Kokan Kabushiki Kaisha

Kiyoshi Sawada

Katsuo Yamazaki

Masahiro Nakagawa

Nobuo Ozawa

Takefumi Narahara

Yoshinobu Fujimori, Deceased

Katsuhiko Oota

By Tomoyoshi Fujimori, Heir

In a device for picking up tubular workpieces sequentially from a stack, and supplying the same to a subsequent stage, at least one truck is provided so as to be reciprocable between a loading position and an unloading position. In the loading position, the tubular workpieces are stacked up on the truck in an orderly manner into a number of layers, each layer including a plurality of rows each including a number of axially aligned tubular workpieces. A workpiece carrying bar reciprocable between an advanced position passing through the inner bores of a row of the tubular workpieces and a retracting position freeing the row, device for shifting the workpiece carrying bar horizontally and vertically, and devices for controlling the operation of the aforementioned devices are further provided.

Devices for automatically supplying tubular workpieces

In a bidirectional driving mechanism comprising a rack, two pinions meshing with the rack, and gear trains through which power is transmitted respectively to the pinions from a common driving source, at least one gear of the gear train is formed as a ring gear and a plurality of variable volume oil chambers containing pressurized oil are formed between the ring gear and the shaft thereof so that driving torque is transmitted from the ring gear to the gear shaft through the oil chambers.

Bidirectional driving mechanism

Growing community of inventors

Shizuoka, Japan

Kiyoshi Sawada