SHEET BENDING ROLL TYPE MACHINE Russian patent published in 1998 - IPC

FIELD: equipment for manufacturing bent sheet material. SUBSTANCE: sheet bending machine includes mounted in frame: struts, upper and side rolls. Upper roll is provided with hinged bearing unit and unit for supporting said roll in the form of beam arranged over said upper roll along its axis and joined by its one end with one of said struts by means of rigid joint. Unit for fixing upper roll is mounted on said beam. Said unit is in the form of clamping member. At least one additional clamping member may be mounted on free end of said beam. Said clamping members may have membrane-type pneumatic drive and working surfaces with shape corresponding to that of working surface of upper roll. EFFECT: enhanced quality of bent sheets, simplified structure of machine. 4 cl, 3 dwg