| 主权项 |
1. A locking device (1) for columns (A) of presses (P) with at least one fixed plane (Pf) and at least one moving plane (Pm), wherein said locking device (1) comprises:
two pairs (2, 3) of locking clamps (21, 22, 31, 32) aligned in a first direction (X) orthogonal to a plurality of columns (A), each pair (2, 3) being engaged to a corresponding column (A) and being configured to clamp said column, said locking clamps (21, 22, 31, 32) being configured to translate in said first direction (X), wherein each pair (2, 3) of locking clamps comprises an inner clamp (21, 31), facing toward the other pair of locking clamps (3, 2), and an outer clamp (22, 32) opposing said inner clamp (21, 31); at least one connection rod or bar (41, 42) configured to rigidly transmit a translational motion between said inner clamp (21, 31) of each pair (2, 3) and the outer clamp (32, 22) of the other pair (3, 2); and at least one actuator (5) located between said two pairs (2, 3) of locking clamps and acting on both of said inner clamps (21, 31) of said two pairs (2, 3) and configured to cause said inner clamps (21, 31) to translate in said first direction (X) orthogonal to the plurality of columns (A) and in an opposite sense, wherein said locking clamps (21, 22, 31, 32) of one or both of said two pairs (2, 3) are mechanically connected to each other through at least one mechanism (61, 62) suited to guide in a synchronized way the a relative translational motion of said locking clamps (21, 22, 31, 32) of a same pair (2, 3), wherein said guide mechanism (61, 62) is integral with said moving plane (Pm) in at least one fixed point (64), thus guaranteeing the a symmetry of the motion of said clamps (21, 22, 31, 32) with respect to said fixed point (64), and wherein said guide mechanism (61, 62) comprises: a carriage (63) configured to translate in both senses along a second direction (Y) transversal to the first direction (X) of movement of said locking clamps (21, 21, 31, 32); guides (64) on which said carriage (63) slides, said guides (64) being integral with said moving plane (Pm) of a press (P); and one pair of connection arms (651, 652) hinged to said carriage (63) and each in turn hinged to the inner clamp (21, 31) or the outer clamp (22, 32) of the corresponding pair (2, 3), wherein said translational motion of said clamps (21, 22, 31, 32) of the same pair (2, 3) is symmetrical with respect to said guides. |
