Extraction device for continuous rolling mills using a retained

Details Extraction device for continuous rolling mills using a retained Extraction device for continuous rolling mills using a retained

1978-02-16

1979-06-26

Mehr, Milton S.

Metal deforming

By use of roller or roller-like tool-element

With tool inside hollow work

72250, B21B 2500

Patent

active

041589548

ABSTRACT:
The present invention is directed to an extraction device for use in continuous rolling mills for extracting tubes from retaining mandrels. The extraction device includes a frame having three pressure yielding rollers mounted therein. The rollers are normally retained in a fixed position for performing a final reduction on the tubes. However, if a mandrel on which the tube has been rolled accidentally enters the orifice defined by the three rollers, the rollers will yield to the excessive pressure and move away from the center of the frame by an amount corresponding to the maximum diameter of the tube containing the mandrel.

REFERENCES:
patent: 2214279 (1940-09-01), Kocks
patent: 3277687 (1966-10-01), Kelly
patent: 3392565 (1968-07-01), Rodder

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