Patent ID: 7721579
Filing Date: 2010-05-25
Classification: B21D,B23K

Abstract:
1. A cold roll forming mill for the manufacture of hollow flange seam welded beams from a single strip of metal, said mill comprising: a forming station; a seam guide and welding station; and, a shaping station; wherein either or both of said forming station and said shaping station comprises independently supported side engaging roll combinations adapted, in use, to roll either or both of opposite sides of said strip, adjacent transverse pairs of said side engaging roll combinations being selectively movable relative to each other in a transverse direction perpendicular to a direction of travel of said strip through said mill, and all forming and shaping rolls of either or both of said forming station and said shaping station consist of said side engaging roll combinations; and wherein each of said transverse pair of side engaging roll combinations is located in a respective longitudinally spaced transverse plane perpendicular to a direction of travel of said strip of metal between said side engaging roll combinations.