Safety mechanism for machine tools - has contact switch connected to power system to ensure correct positioning of safety device

摘要

The safety mechanism is for presses, stamping machines, cutters or similar machines where there is a reciprocating movement of the working machinery. A normal safety gate is fitted preventing operator access when the machine is moving on a working stroke. In addition to the mechanically linked safety gate (5) there is a contact device (28), in particular an end switch, which determines whether or not the gate is actually in position. This switch controls a valve or clutch (49) connected to the machine power drive and cuts off the power on the working stroke if the gate is not in position.