Abstract: A locking device for columns of presses with two pairs of locking clamps, wherein the locking clamps of one or both the pairs are mechanically connected to each other through at least one mechanism suited to guide in a synchronized way the relative translational motion of the two locking clamps of the same pair, and wherein the guide mechanism is integral with the moving plane in at least one fixed point, thus guaranteeing the symmetry of the motion of the locking clamps with respect to the fixed point.

Abstract: A locking device for columns of presses with two pairs of locking clamps, wherein the locking clamps of one or both the pairs are mechanically connected to each other through at least one mechanism suited to guide in a synchronized way the relative translational motion of the two locking clamps of the same pair, and wherein the guide mechanism is integral with the moving plane in at least one fixed point, thus guaranteeing the symmetry of the motion of the locking clamps) with respect to the fixed point.

Abstract: Locking device for columns (A) of presses with at least one stationary platen and at least one moveable platen (E), comprising, in a containment body (D), a wedge flange (G) firmly fastened to the back of the tightening wedges (B) and able to translate axially, and where after the tightening of said wedges (B) on said column (A), the group formed by the piston (C) acting on said wedges (B), said wedge flange (G), said wedges (B) and said column (A) translates with a maximum stroke (m) limited by a starting or resting position of the wedge flange (G) to an end stop position, determined by the pressing of said wedge flange (G) on the rear plate (D2) of said containment body (D).