Patent ID: 8683835

Claim:
An automatic stop device ( 1 ) for positioning a workpiece to be shaped in an edging press, the edging press having bending tools ( 4 , 5 ) respectively arranged opposite one another in a table bar ( 2 ) and a bending bar ( 3 ) movable relative to each other in a bending plane ( 8 ), the edging press further having a control and regulating device, the automatic stop device comprising: a stop support slide ( 13 ) and a stop support ( 14 ) on the stop support slide ( 13 ), the stop support ( 14 ) projecting in a direction substantially perpendicular to the bending plane ( 8 ) formed by the bending tools ( 4 , 5 ); a stop element ( 15 ) and a guiding arrangement ( 16 ) for the stop element ( 15 ), the guiding arrangement ( 16 ) being structured and arranged to permit the stop element ( 15 ) to move relative to the stop support ( 14 ) in a direction perpendicular to the bending plane ( 8 ), between a position of rest facing the bending plane ( 8 ) and a stop position spaced apart therefrom; a spring arrangement ( 21 ) that exerts a resistance force on the stop element ( 15 ) opposing movement of the stop element from the rest position toward the stop position; at least one sensor element ( 27 ) detecting when the stop element ( 15 ) has reached the stop position; and a switchable and controllable retaining device ( 31 ) connected with the control and regulating device and operable on demand to produce an additional resistance force acting on the stop element ( 15 ) opposing movement of the stop element ( 15 ) toward the stop position, the retaining device ( 31 ) thus being operable for varying a total amount of resistance force opposing movement of the stop element ( 15 ) toward the stop position.