ATBECHDEDKESFRGBGRITLILUNLSEMCPTIESILTLVFIROMKCYALTRBGCZEEHUPLSKBAHRIS..MTNORS......................JDIM360 Ver 2.15 (14 Jul 2008) - 1620000/02050521EUROPEAN PATENT APPLICATIONA320101006EP08166817.020081016itenenMI2007201620071018IT2010100620104020090422200917B21D 28/06 20060101AFI20100901BHEP deVorrichtung und Verfahren zum Kaltabtrennen von scheibenförmigen Vorformen von einem MetallstreifenenAn apparatus and a method for cold shearing discoid preforms from a metal stripfrAppareil et procédé pour le cisaillage à froid de préformes discoïdes à partir d'une bande métallique1Donatiello, Gaetano10011155696318Via Fogazzaro, 1520035 Lissone (Milano)ITDonatiello, GaetanoVia Fogazzaro, 1520035 Lissone (Milano)ITMartegani, Francoet al100018966Franco Martegani S.r.l. Via Carlo Alberto, 4120052 Monza (Milano)ITATBEBGCHCYCZDEDKEEESFIFRGBGRHRHUIEISITLILTLULVMCMTNLNOPLPTROSESISKTRALBAMKRS20101006201040

A method for cold shearing from a metal strip (12) a succession of at least two discoid preforms (11, 11', 11") made along at least two parallel rows, said at least two discoid preforms (11, 11', 11") having at least one inner tangent point (18, 18') between at least said rows and at least two outer tangent points (19, 19') with the lateral portions of said metal strip (12), characterised in that it achieves the step of cutting said metal strip (12) along at least two polygons (14, 14', 14") circumscribing said at least two discoid preforms (11, 11', 11"), wherein said at least two polygons (14, 14', 14") comprise at least one side (15, 15') comprising said at least one inner tangent point (18, 18") and at least two sides (16, 16') comprising said at least two outer tangent points (19, 19') and coinciding with said lateral portions of said metal strip (12).