METHOD OF COMPENSATION OF MOMENTARY LACK OF FILTER SEGMENTS IN MULTI SEGMENT FILTER MANUFACTURING LINE AND DEVICE ENABLING COMPENSATION OF MOMENTARY LACK OF FILTER SEGMENTS IN MULTI SEGMENT FILTER MANUFACTURING LINE

摘要

The method consists in that in case of occurrence of a gap (12) on a path (9) feeding out sets of filter segments (5) of a flute (6) of a cutting drum (3) caused by lack of a filter rod in a flute (6) the operation of the units situated before the gap (12) is slowed down with simultaneous acceleration of the operation of the units situated behind the gap (12) until the moment of elimination of the gap (12) the lack of a filter rod in the flute (6) being detected by means of sensors (13 14) and the process of compensation beginning at the moment when the set of segments (5) guided by the pusher (8) of the out feeding unit (7) being before the gap (12) is taken over by a delivery unit (H) and ends at the moment of elimination of the gap (12). Detection of the lack of a filter rod by the sensors (13 14) in one of the modules (I) causes the slowdown of the operation of all units in other modules (1) until the moment of elimination of the gap (12) whereafter all modules (I) continue the operation with nominal speed. The delivery unit (11) has the form of a gripper holding the set of segments (5) after taking it over form the out feeding unit (7) whereas the device (11) may be constituted by a drum (15) with worm like lug (16) on the surface or an endless chain (25) with catches (26) or a set of two endless belts (35). Close to the cutting drum (3) is situated at least one sensor (13) detecting the lack of a filter rod in the flute (6) while in the zone of the out feeding path (9) is situated at least one second sensor (14) confirming the correctness of the readings of the first sensor (13).