Abstract: A roll bender machine for bending metal sheets which includes a roller driven in rotation and about which the sheet metal is rolled and at least two backing rollers adapted to receive and bear against a sheet while it is being bent around the roller. The backing rollers are mounted to rotate on a support that is adjustable. The bending roller and backing rollers are each associated with at least one set of devices for compensating their deflection. An arm is mounted on the machine for receiving coiled sheet metal and is provided with a housing in which the bending roller is at least partially received.

Abstract: The invention relates to a roll bender type machine for bending metal sheets, the machine comprising firstly a bending roller (20) driven in rotation and about which the sheet metal (32) is rolled, and secondly at least two backing rollers (19) adapted to receive and bear against a sheet while it is being bent around said bending roller (20). The backing rollers (19) being mounted to rotate freely on a support (11) that is adjustable in height so as to adapt the clearance between said bending roller (20) and said backing rollers (19) to the thickness of said sheet (32). The bending roller (20) is associated with at least one set of means (21, 23) for compensating its deflection, at least in part. The backing rollers (19) being associated with at least one set (11) of means for compensating their deflection, said set being adjustable depending on any residual deflection of said bending roller (20).

Abstract: The invention features a sheet metal bending machine constituted by a smooth carrying roller around which the sheet metal is rolled, after bending, and by smooth press rollers against which the carrying roller presses, is characterized in that the carrying roller (2) is supported at one end by a fixed bearing (15) and at its other end by a retractable bearing (18), and in that the press rollers (3, 4) are supported, directly or indirectly (support rollers) by a plurality of bearings (5) supported by a control mechanism called "inclined blocks". (7, 8).

Abstract: The invention is in the field of metallurgy and relates to an automatic machine for the continuous production of cylindrical shells from a pile of flat metal sheets. Said machine is characterized in that it is comprised of, from the output of the shell to the input of the metal sheet, a welding station provided with means for transferring and holding a rolled blank with jointed edges and means for the continuous formation of a welding bead along said edges, a station for the continuous transfer of the rolled blanks and for progressively tightening them, a station for the discontinuous transfer of the blanks to deliver them axially against each other, a rolling station consisting of a rolling machine, and a supply station comprising means for unpiling and transferring the metal sheets, and a servomechanism for adjusting the bending means as a function of the thickness of each sheet.

Abstract: A bending machine for shaping a flat sheet into a cylinder or cone by passing the sheet between a support roll and a train crenelated rolls having parallel axes. The crenelated rolls are subjected to pressure by a train of press rolls having axes parallel to those of the crenelated rolls.