Apparatus and method for forming seamed tube

Details Apparatus and method for forming seamed tube Apparatus and method for forming seamed tube

1983-02-01

1985-04-30

Combs, E. Michael

Metal deforming

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

To form longitudinally-seamed tube

72206, 72213, B21D 3902, B21D 5128, B21D 501

Patent

active

045135967

ABSTRACT:
The present invention provides an apparatus and method of forming tube, for example, muffler shells by the use of forming sheet over a mandrel by rolling a pair of symmetrical rollers from a point on the mandrel over an arcuate surface thereof to form the sheet thereof, the rolling being performed by roller means which are elongated to extend from the length of the mandrel and which are biased one towards the other with sufficient force to form the sheet as they are rolled over the surface of the mandrel.

REFERENCES:
patent: 1200190 (1916-10-01), Hahnemann
patent: 4141235 (1979-02-01), Ishihara

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