| 摘要 |
Disclosed is a cutting device which is horizontally displaceable by means of double-acting guide cylinders and is vertically movable along vertical guide rods by means of a positioning device 10. Before cutting, the cutting device is brought into the preselected position by the positioning device. The heated cutting wire of the cutting device is connected to a current source via sliding contacts resting against ball bearings, over which the cutting wire is guided. The circuit of the current source contains a microswitch, the switch lug of which comes to rest against a plate during the forward movement of the cutting device and switches over the microswitch, thus terminating the heating of the cutting wire. This takes place at the moment when a cutting wire, after cutting through a material guided vertically over a cutting bar, penetrates into a notch in the cutting bar. |
