Extrusion press
AssigneeUbe Machinery Corporation, Ltd.
InventorTakeharu Yamamoto
Life of this patent
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Abstract
An electric powered extrusion press pushes an extrusion stem by extrusion force generated by an electric powered drive device so that pressure is applied to a billet and a predetermined product is extruded through a die, wherein the electric powered drive device is provided with one or more freely rotatable wire drums, an electric powered extrusion-use main motor makes the wire drums rotate wind up wires and thereby give a thrust to movable pulleys in the extrusion direction so that a crosshead and extrusion stem are driven to advance through an extrusion movement part.
Claims6
An extrusion press comprising an end platen, die, container, crosshead having an extrusion stem, and a fixed platen on which an electric powered drive device and fixed pulleys are provided, that pushes said extrusion stem to thereby push a billet out from said die to obtain a predetermined product, wherein
- said electric powered drive device is provided with an extrusion-use main electric motor and one or more wire drums provided to be able to freely rotate,
- said crosshead is provided with an extrusion movement part to which movable pulleys are fastened,
- said extrusion-use main electric motor rotates said wire drums to wind up wires and thereby thrust said movable pulley in an extrusion direction,
- said crosshead and said extrusion stem are driven to advance through said extrusion movement part, and
- a single wire is wound around said wire drum from two ends of said wire, one end part is fastened to said wire drum, said wire is strung between said fixed pulleys and movable pulleys, and the other end part of the wire is also fastened to said wire drum.
Dependencies are inferred from the claim text.