ATBECHDEDKESFRGBGRITLILUNLSEMCPTIESILTLVFIROMKCYAL..............................JDIM350 (Ver 2.1 Jan 2001) 1620000/00934782EUROPEAN PATENT APPLICATIONA320030108EP98124307.419981221ItEnEnMI98015519980128IT20030108200302199908111999327 7B 21D 5/02 AdeGetriebevorrichtung der Klemmbacken in UmformpressenenDrive system for the jaws of forming pressesfrSystème d'entraînement des machoires de serrage dans des presses de déformation2Tecnostamp Srl02626970PETR/NS/4110EPOVia Einaudi, 1429100 PiacenzaITCella, GiorgioVia Sidoli, 5129100 PiacenzaITPetruzziello, Aldoet al00059341Racheli & C. s.r.l. Viale San Michele del Carso, 420144 MilanoITATBECHCYDEDKESFIFRGBGRIEITLILUMCNLPTSEALLTLVMKROSI20030108200302

A drive system for the jaws of forming presses comprising series of pairs of opposed tools, punches (10) and dies (40), shaped according to the forming to be carried out, the punches (10) being clamped, by means of cylindrical actuators (101), to intermediaries (5), in turn clamped to an upper movable table (1) of the press, and the dies (40) being clamped, by means of cylindrical actuators (102), to a supporting bar (41); the cylindrical actuators (101, 102) are controlled during clamping by respective spring means (18, 54) and are hydraulically unclamped through the pressure of oil coming from special ducts made in the respective rear plates (22, 25).