Apparatus for cutting and nibbling a sheet metal in coil form

An apparatus for cutting and nibbling a sheet metal element in coil form, said apparatus comprising pulling devices for pulling said sheet metal element, which is delivered from a coil or bobbin and is driven by a pair of overlapped rollers, said sheet metal element being adapted to be intermittently moved, stopped and moved backward, said sheet metal element being cut or nibbled by top and bottom movable machining heads which are arranged above and under said sheet metal element and are transversely driven with respect to a feeding direction of said sheet metal element, said apparatus having two beams arranged transversely with respect to said sheet metal element feeding direction, wherein said beams being adapted to support cross guide elements which are arranged parallel to said beams, and said cross guide elements being adapted to support said movable machining heads, and wherein said apparatus further comprises a plurality of offset rollers performing a series of folding and counter-folding operations for providing said sheet metal element in a perfectly flat condition said machining heads being driven parallel to said beams and transversely of the sheet metal element feeding direction.