PROFILE-IRON BENDING MILL Russian patent published in 2010 - IPC B21D5/06 

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming, particularly specialised roll mills to produce 4 mm-thick roll-formed shapes. Proposed mill comprises roughing and finishing stands with stand space behind which vertical rolls are mounted to move through preset vertical distances and across mill crosswise axis. Five vertical rolls are fitted behind every roughing stand, roll cylindrical part length making at least the forming height in this stand and having a certain diametre. Rolls are staggered with respect to mill lengthwise axis and can additionally move parallel to said axis to vary lengthwise distance between them to maximum value. At least two rolls arranged on opposite sides of aforesaid axis are drive rolls. Taper elements are fitted on roll end faces with taper surface facing each other, said rollers having maximum diametres.

EFFECT: improved geometry of cold roll-formed shapes to due reduced lengthwise curvature.

3 dwg, 1 ex