Patent ID: 6919555

Claim:
A guard device for machines such as bending presses, cutting machines, stamping machines or the like, wherein a first machine part performs operative movements toward a second machine part, comprising a photoelectric detector arrangement attached to the first machine part by means of a holding means and able to be repositioned in relation to the first machine part, said photoelectric detector arrangement being more particularly a laser photoelectric detector arrangement, which possesses at least one photoelectric detector, producing a light beam that shines perpendicular to the operative movement and in an adjustable secure position is at a secure distance from the first machine part toward the second machine part, and a locking means for halting operative movement on interruption of the light beam and wherein for the photoelectric detector arrangement and on the second machine part an abutment arrangement is arranged which is adapted to prevent interruption of the light beam by a workpiece arranged on the second machine part, the holding means has play permitting further movement of the first machine part in relation to the photoelectric detector arrangement after reaching the abutting position and furthermore the photoelectric detector arrangement is either so laterally offset that an interruption of the light beam by the first machine part is excluded during such further movement or the photoelectric detector arrangement is arranged on the first machine part in the operative path thereof, a switch means, able to be worked on reaching the abutting position, being designed for deactivation of the at least one photoelectric detector.