Patent ID: 8522679

Claim:
A press for the production or forming of workpieces that acquire their final form in a plurality of steps, comprising a transfer device ( 2 ) for stepwise displacement of the workpieces to individual forming stations of the press, the transfer device ( 2 ) having at least one gripper rail ( 3 ) which is movable back and forth in an advancing direction for the advance and return movement and includes gripper parts or gripper regions ( 7 ) for grasping the workpieces, and which can be adjusted for grasping the workpieces and for moving in the advancing direction and subsequently into an initial position again, the transfer device ( 2 ) having at least one gripper rail coupling ( 14 ) with a coupling piece ( 15 ) and with a coupling counterpiece ( 16 ) fixedly connected to the gripper rail ( 3 ) and designed to fit with the coupling piece ( 15 ), the coupling piece ( 15 ) being separable from the coupling counterpiece ( 16 ) and connectable thereto for a tool change, and the coupling piece ( 15 ) having a locking mechanism ( 17 ), the locking mechanism ( 17 ) has a tie rod ( 18 ) which is oriented essentially parallel to a direction of connection ( 26 ) of the gripper rail coupling ( 14 ) and which can be displaced by a first actuating element ( 19 ) between a holding position and a releasing position of the gripper rail coupling ( 14 ), and in the holding position, the tie rod ( 18 ) presses at least one locking element ( 21 ) into a recess ( 22 ) of the coupling counterpiece ( 16 ) transversely with respect to the direction of connection ( 26 ) of the gripper rail coupling ( 14 ) and radially outward, the first actuating element ( 19 ) can be actuated mechanically from outside, and an actuation directed transversely with respect to the direction of connection ( 26 ) of the gripper rail coupling ( 14 ) can be converted into a displacement of the tie rod ( 18 ) by the first actuating element ( 19 ).