Press with a transfer device for the stepwise displacement of the workpieces and with a gripper rail coupling

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).