PROFILE-BENDING MACHINE Russian patent published in 2009 - IPC B21D5/06 

FIELD: technological processes.

SUBSTANCE: bent section bars are produced simultaneously from two cold rolled strip blanks of different width, from which the narrower strip is imposed on wider strip. Profiling is done is serially installed setting and molding stands. Upstream setting stand centering vertical rollers are installed for alignment of bottom strip and pair of cylindrical rollers for alignment of top strip. Upstream the first molding stand at a certain distance from it two centering rollers are installed, having cylindrical section of preset diameter and cylinder-taper section installed above also with preset diameter. At that generatrix of tapered surface intended for contact with upper profiled strip is inclined to horizontal line at preset angle.

EFFECT: higher quality of double-layer bent profiles.

2 cl, 2 dwg, 1 ex