Freund Industrial Co., Ltd.

Shigetoshi Kashiwagi

Toshinari Sasaki

Shigemi Isobe

Akira Iwasaki

A pair of compression rollers and parallel with each other are provided and powder grains are supplied to a powder grain introduction/compression part formed between the rollers and and, thereby, compression moldings of the powder grains are formed. A powder grain press/feed means is provided in a front stage of the rollers and The press/feed means has a deaerating barrel and previously presses the powder grains supplied between the rollers and In side surfaces of the rollers and side seals are arranged with clearances maintained from the rollers and During pressing the powder moldings, the powder grains enter into the clearances so that closer layers are formed between the side surfaces of the compression rollers and and the side seals thereby sealing the powder grain introduction/compression part In a rear stage of the rollers and a shearing device is provided and shears the compression moldings formed by the rollers and Torque of the shearing device is detected by a torque sensor, and the compression rollers and and the powder grain transport means are controlled in accordance with the detected torque.

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Tokyo, Japan

Shigetoshi Kashiwagi