Extrusion press operating by the indirect method

A press for extruding tubes by the indirect method comprising:

• a fixed tubular die casing having a die and defining a pressing axis,
• a main cross beam supported for movement parallel to the pressing axis,
• a main jack coupled to the cross beam for displacement thereof,
• a container for a billet to be extruded supported for movement parallel to the pressing axis, said container having open extremities one of which is capable of fitting on the die casing upon movement of the container parallel to the pressing axis,
• a base for closing the other extremity of the container,
• a slide carrying said base and displaceable on the cross beam transversely with respect to the pressing axis,
• a housing mounted on said slide in a laterally offset position for loading a billet to be extruded,
• means for displacing the slide to selectively position said base or said housing on said pressing axis,
• an axially displaceable push rod for displacing said billet from said housing,
• an auxiliary jack mounted within the main jack and acting along the pressing axis,
• an auxiliary cross beam slidably mounted on said main cross beam for movement parallel to the pressing axis;
• said auxiliary cross beam being coupled to and actuated by said auxiliary jack,
• a support extending parallel to said slide and mounted for slidable transverse movement in said auxiliary cross beam,
• means for controllably displacing said support transversely and simultaneously with the slide, and
• a holder extending parallel to the pressing axis having a rear extremity secured to said support for movement therewith and a plunger secured to said holder and slidably mounted in said base,
• said push rod for displacing the billet from said housing having a rear extremity also secured to said support for movement therewith and a front extremity slidably mounted on said slide axially within said housing.