Method and apparatus for roll forming a plurality of heat exchan

Details Method and apparatus for roll forming a plurality of heat exchan Method and apparatus for roll forming a plurality of heat exchan

1998-11-23

2000-03-07

Butler, Rodney

Metal deforming

By use of 'flying tool' engaging moving work

With cutting

B21D 1300

Patent

active

060325038

ABSTRACT:
A method and apparatus are provided for roll forming a plurality of fin strips (10) from a single elongated strip of sheet material (20). The strip (20) includes a pair of adjacent, longitudinal rows (22, 24) of alternating crests (26) and valleys (28), with the crests (26) and valleys (28) of the row (22) longitudinally offset from the crests (26) and valleys (28) of the other row (24) so that the two rows (22, 24) are joined by a plurality of longitudinally spaced discrete connections (30) that define a longitudinal interface (32) between the two rows (22, 24). The connections (30) are broken by displacing the two rows (22, 24) relative to each other to form a pair of fin strips (36, 38), with each fin strip (36, 38) having a side edge (40, 42) defined by the now separated interface (32).

REFERENCES:
patent: 4170122 (1979-10-01), Cowell
patent: 4297866 (1981-11-01), Sakauye et al.
patent: 4888972 (1989-12-01), Rouse

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