Parts and Functions
Rovema VPK Operators Manual
3/2000 VPK REV(B) PANELVIEW 600
3-8
Film Carriage
Out of Film Sensor Assembly
The out of film sensor assembly causes the bagmaker to stop forming
bags when the film roll is exhausted or when the film tension is too
high. It consists of a proximity sensor and two metal flags that are
connected to the dancer arms.
When the film roll is exhausted, the dancer arms fall to the bottom of
the film carriage and rotate the upper flag in front of the proximity
sensor. This signals the bagmaker to stop forming bags.
When the film tension is too high, the film loop pulls the dancer arms
to the top of the film carriage and rotates the lower flag in front of the
sensor. This also signals the bagmaker to stop forming bags.
Figure 3.7
Shows the proximity sensor and its two flags.
Lower Flag
Upper Flag
