Extruding apparatus for extruding stepped products

Details Extruding apparatus for extruding stepped products Extruding apparatus for extruding stepped products

1990-02-20

1991-06-11

Spruill, Robert L.

Metal deforming

By extruding through orifice

Expressing non-uniform cross-section or non-linear product

72263, 425190, 425381, 425465, 264167, B21C 2508, B21C 2502

Patent

active

050222520

ABSTRACT:
An apparatus for extruding stepped extrusions, e.g. of aluminum or aluminium alloy, comprises a die holder carrying a major die, and a split minor die arranged for abutment with the downstream side of the major die and having its two halves mounted on respective parts of a split holder. The holder parts are movable towards and away from the line of extrusion to put together and separate the halves of the minor die. The die holder and the container of an extruder are movable towards each other to press the minor die the major die and the downstream face of the container into sealing engagement about the die apertures, and are movable away from each other to permit the extrusion to be sheared off between the container and the major die.

REFERENCES:
patent: 2715459 (1955-08-01), Krause
patent: 2778493 (1957-01-01), Kreidler
patent: 2899053 (1959-08-01), Govan
patent: 3540094 (1970-11-01), Janssen
patent: 3585834 (1971-06-01), Bruyn et al.
patent: 4793170 (1988-12-01), Daniels

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