Patent ID: 7162908

Claim:
Device for moving a movable upper table carrying a punch of a bending press and slidable along two guiding pillars ( 5 ), comprising: two devices ( 7 ) for moving the upper table along two associated guiding pillars ( 5 ), with one device associated with each guiding pillar, each device comprising a rod ( 8 ) hinged to the upper table; a part ( 9 ) translatable along the hinged rod; a main lever ( 10 ) hinged next to a vertical axis of the associated guiding pillar, the main lever ( 10 ) comprising a resisting arm ( 10 b ) attached to a driving arm ( 10 a ), the driving arm ( 10 a ) hinged to the translatable part; an eccentric ( 13 ) connected to a connecting rod ( 14 ), the connecting rod adapted to transmit rectilinear translating motion to the upper table; a crank ( 12 ) hinged, through the eccentric ( 13 ), to the connecting rod ( 14 ), said crank being rotated by the resisting arm ( 10 b ) of the main lever ( 10 ), wherein, the hinged rod ( 8 ) is a threaded bar rotated by a ratio-motor, and the part translatable along the hinged rod is a scroll ( 9 ) slidable along the threaded bar rotated by the ratio-motor.