Hold down roll assembly for aligning longitudinal tubular edges

Details Hold down roll assembly for aligning longitudinal tubular edges Hold down roll assembly for aligning longitudinal tubular edges

1978-09-01

1980-04-15

Combs, Ervin M.

Metal deforming

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

To form longitudinally-seamed tube

72181, 228 49C, B21D 512, B21D 3902

Patent

active

041977297

ABSTRACT:
An assembly for maintaining alignment of a metal strip between successive roll forming means in an apparatus for forming a metal tube is disclosed. The apparatus includes a first set of roll forming means, which form the flat strip of metal into a generally U-shaped cross-sectional configuration, and a second set of roll forming means which form the U-shaped strip into a generally annular cross-sectional configuration. The assembly includes a pair of cylindrical hold down rolls which engage the guide respective marginal edge portions of the U-shaped strip into the second set of roll forming means. The cylindrical hold down rolls are rotatably supported by appropriate shaft means. The end portions of each of the shaft means are supported by vertically adjustable bearing means for adjusting the angular disposition of the shaft and the associated cylindrical hold down roll with respect to the marginal edge portions of the formed strip of metal. Since the distance between each cooperating pair of bearing means changes during the angular disposition of the shaft, at least one end of the bearing means must allow the shaft to slide telescopically therein when the angular disposition of the shaft is changed.

REFERENCES:
patent: 2911932 (1959-11-01), Kinkead
patent: 2970203 (1961-01-01), Sanner et al.
patent: 3170427 (1965-02-01), Ruple et al.
patent: 3245242 (1966-04-01), Maier
patent: 3266703 (1966-08-01), Ruple
patent: 3301455 (1967-01-01), Gibson
patent: 3430475 (1969-03-01), Lindmark
patent: 3752377 (1973-04-01), Knapp
patent: 4122696 (1978-10-01), Midzutani et al.

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