METHOD AND APPARATUS FOR STRAIGHTENING STRIP Russian patent published in 1995 - IPC

FIELD: metal pressure forming. SUBSTANCE: method comprises steps of reciprocation motion of a strip by pinch and bridle rolls, acting upon lateral sides of the strip by two rows of straightening rollers for simultaneous action on its surface, being normal relative to the lateral faces, by rollers, bending the strip. All rollers are mounted in cages, being in the form of two driven discs. A portion of the strip, tensioned in the form of a broken line, continually changing its configuration, is being subjected to straightening. The action upon the lateral faces of the strip is being performed by rolling on them with use of a limited number of the rollers; multiple action is being provided due to intermittent introduction of rollers, acting upon the strip, instead of identical rollers, being removed out of such interaction with the strip. EFFECT: enhanced quality and lowered cost price of blank forming, simplified structure of the apparatus for performing the method and its lowered metal consumption. 3 cl, 2 dwg