Indirect extrusion press.

摘要

An indirect extrusion press in which a seal block (16) provided with a disc portion (18) to be fitted in a billet receiving bore (25) of a container (24) and also provided with a cylindrical portion (19) contiguous to the disc portion (18) and having an outside diameter larger than the billet receiving bore (25) is provided at the fore end of a pressure stem (15), and a die stem (21) is disposed in front of and coaxially with the pressure stem (15). Billet (V) is loaded onto an axis of the press by means of a billet loader (29), then charged into the billet receiving bore (25) of the container (24) from the pressure stem (15) side and then extruded through the die stem (21) in a state in which one end of the billet receiving bore (25) of the container (24) is closed with the seal block (16). A plurality of circumferentially spaced notches (20) are formed in the press axis direction on the outer periphery of the cylindrical portion (19) of the seal block (16), both the container (24) and the billet loader (29) are movable toward the pressure stem (15), and a billet support portion (35) provided at the fore end of the billet loader (29) is formed with projections (39) adapted to engage the notches (20) and guided thereby, the projections (39) being formed in the press axis direction.