Apparatus for making helically wound interlocked tubular structu

Details Apparatus for making helically wound interlocked tubular structu Apparatus for making helically wound interlocked tubular structu

1984-12-05

1986-07-01

Combs, E. Michael

Metal deforming

By tool-couple pressing together adjacent surface portions...

To form helically-seamed tube

B21C 3712

Patent

active

045972761

ABSTRACT:
Apparatus for making a continuous tubular structure of helically wound interlocked metal strip. The metal strip is fed to forming rollers, from a reel of the strip and which are mounted on the same side of a circular plate which is rotated about a horizontal axis to wind the strip, which is shaped by the rollers, prior to winding, around a mandrel. A plurality of pressure rollers positioned around the mandrel interlock and compress the profiled strip. The mandrel is driven in a direction opposite to the direction of rotation of the plate. A rotatable support assembly downstream of the mandrel tightens and clamps the windings. A longitudinal extraction mechanism downstream from the support assembly restrains the tubular structure from rotating and feeds the formed structure to a receiving reel.

REFERENCES:
patent: 1004644 (1911-10-01), Gilson
patent: 3677046 (1972-07-01), Carroll
patent: 4058997 (1977-11-01), Siegwart
patent: 4081981 (1978-04-01), Lipp

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