Kabushiki Kaisha Kobe Seiko Sho

Kobe Steel, Ltd.

Takahisa Tabuchi

Akira Asari

Tatsuhiko Noyori

Tsuneharu Masuda

Hidehiro Tsuzuki

Munenori Soejima

Tetsuro Takehata, Deceased

Yoichi Inoue

Masakazu Ueda

Toshio Kurosaki

Tetsuro Takehata

Masao Mizoguchi

Tetsuya Miyauchi

Masaru Sugamoto

Method of and apparatus for indirect extrusion

A pullback type indirect extrusion press capable of extruding a tubular article, the press including first and second movable platens connected to each other by columns, the movable platens being arranged in front of and behind a fixed platen, a mechanism for producing a extruding force provided above and below or the left and right between the fixed platen and the first movable platen, and a container device and a die stem arranged between the fixed platen and the second movable platen. A piercing cylinder mechanism is provided on the axis of the press on the side of the non-extrusion zone, the piercing cylinder mechanism being provided independently of the mechanism for producing the extruding force.

Pullback type double-acting indirect extrusion press

A hot isostatic pressing apparatus equipped with at least one hot isostatic pressing vessel having a detachable bottom lid and at least one cooling or preheating cylinder or hot isostatic pressing vessel arranged substantially on a central horizontal extension of the former vessel, which apparatus includes a rail provided in front of the former vessel and cylinder or the latter vessel with an interval between the rail and the former vessel and the cylinder or the latter vessel; and a carrier capable of reciprocally travelling between the former vessel and the cylinder or the latter vessel and including a lift frame, a lift provided with the frame and a bottom lid cradle, the cradle being provided in the form of a cantilever with lift and extending to a point underneath the former vessel when the carrier assumes a position in front of the former vessel and to another point underneath the cylinder or the latter vessel when the carrier assumes a position in front of the cylinder or the latter vessel. The above construction permits smooth and free travelling of the carrier and facilitates the overall size reduction and maintenance of the HIP apparatus. Only one carrier is required even if a plurality of HIP vessels or a plurality of HIP vessels and preheating/cooling cylinders is provided so as to improve production efficiency.

Hot isostatic pressing apparatus

An indirect extrusion press including a die assembly having a loose die detachably mounted on a die stem and axially movable relative to a billet container for extruding a billet through a die hole, and a die handling mechanism for transferring the die assembly between the press center and a position outside the press machine, the indirect extrusion press including a reduced diameter portion provided in the rear end portion of the die stem and defining a stepped wall portion; a loose die detachably mounted on the end face of the reduced diameter portion; and a detachable cleaning ring loosely fitted on the reduced diameter portion of the die stem in abutting engagement with the stepped wall portion and in axially spaced relation with the loose die, the cleaning ring being in sliding engagement with the inner periphery of the billet container in the extruding phase of the press operation to remove container shells. The press may further include as part of the die handling mechanism a chuck member for releasably gripping the loose die and cleaning ring and movable for transferring the die and ring in spaced relation between the press center and a retracted position outside the press machine, and a knocking member movable into the space between the loose die and cleaning ring at the retracted position to knock off container shells from a gap between the loose die and the cleaning ring.

Indirect extrusion press

A billet scalper including a die assembly with a scalping die, a pressing mechanism with a stem member in axial alignment with the scalping die for pressing a billet thereinto, and a chip ejector located around the circumference of the scalping die and movable axially back and forth beyond a free end face of the scalping die to remove chips therefrom. The die assembly including the scalping die is movable between a position at the center of the scalper and an outer receded position to permit easy maintenance and service of the die assembly including replacements and cleaning of scalping dies. In a preferred form, the scalper is constructed integrally with an extrusion press to perform the billet scalping operation in timed relation with the extruding operation to shorten the time of press cycle.

Billet scalper and drive mechanism therefor

An apparatus for sequentially feeding and stacking elongated or lengthy material in a receptacle channel of a load-carrying bed or stand. The apparatus is constructed to transfer the elongated material to the receptacle channel by a reduced number of support beams which are movable vertically to permit adjustment of the distance the elongated material is to be dropped onto the receptacle channel from the support beams.

Apparatus for stacking elongated materials

A die stem for an extrusion press connected at its one end to a die holder including a first connecting construction such as a screw or a bayonet provided in the inner bore of the end portion of a sleeve received by the inner bore of the die stem, and a second connecting construction such as a screw or a bayonet provided at the rear end projection of the die holder, the second connecting construction being adapted to cooperate with the first connecting construction, whereby the compression stress at the connecting portion thereof due to the extrusion force is prevented from taking place.

Growing community of inventors

Kobe, Japan

Takahisa Tabuchi