THIN-WALLED CYLINDRICAL BILLET EDGE CRIMPING UNIT Russian patent published in 1998 - IPC

FIELD: manufacture of aerosol balloons, in particular, mechanical crimping equipment. SUBSTANCE: unit has rolling head with forming members and forming roller. When edges of billet are rolled at both sides, two rolling heads and two forming rollers are used. Supporting washer of forming head has annular slot for receiving crimped edge to prevent it from expansion by roller. When head forming members and forming roller are brought together, maximum gap equal to thickness of metal of billet is provided between them. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 3 dwg