Apparatus for continuously forcing an elongate and extrusile raw

Details Apparatus for continuously forcing an elongate and extrusile raw Apparatus for continuously forcing an elongate and extrusile raw

1994-01-28

1995-12-12

Larson, Lowell A.

Metal deforming

By extruding through orifice

By rotating impeller means

72270, 72271, B21C 3300, B21C 3100, B21C 2300

Patent

active

054739250

ABSTRACT:
An apparatus has first propellers (20) and second propellers (21) alternating with the first propellers. Each propeller has one or more helical biting edges (24a) protruding into a guide passage (28) through which a raw material (W) advances. The biting edges are formed along an inner periphery of each propeller at a predetermined lead angle so as to bite an outer periphery of the raw material (W). The apparatus further has a drive mechanism for rotating the first propellers (20) in a direction opposite to that in which the second propellers (21) are driven. The helical biting edges (24a) are inclined such that the raw material (W) may be forced towards a pressure vessel (2) by all the propellers, notwithstanding the opposite directions in which the first and second propellers ape driven, so that a strong thrust is applied to the raw material, without causing any torsion of the material which is being forced towards the pressure vessel.

REFERENCES:
patent: 5167138 (1992-12-01), Sinha et al.

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