B - Operations – Transporting – 21 – B
Patent
B - Operations, Transporting
21
B
B21B 13/02 (2006.01) B21D 13/04 (2006.01) B21D 31/04 (2006.01) B21D 53/04 (2006.01) F28F 3/02 (2006.01)
Patent
CA 2288516
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).
Cassan Maclean
Modine Manufacturing Company
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