Patent ID: 9332785
Filing Date: 2016-05-10
CPC Classification: A24D

Claim Text:
1. A method of manufacturing multi-segment filter rods used in the tobacco industry for cigarettes, comprising: conveying a plurality of segments with a feeding unit, onto a format tape, wrapping the plurality of segments on the format tape in a paper wrapper to form a filter roller, dividing the filter roller into a plurality of filter rods with a cutting head which cuts the plurality of segments within the filter roller, each filter rod thereby containing a plurality of segment halves, entering information regarding the segments to be cut, a length of the filter rods, a sequence of segments in the filter rod and filter roller, and a constant distance between the feeding unit and a cutting head into a control system, calculating a basic static electronic relationship between drive systems of servomotors of the feeding unit and the cutting head, considering a drive system of a servomotor of the format tape, checking the position of each segment on the format tape by a sensor disposed between the feeding unit and the cutting head, provisionally calculating a cutting moment necessary to obtain the length of the filter rod, in the control system, comparing the provisionally calculated cutting moment with the basic static electronic relationship, in the control system, gradually adjusting the cutting moment in relation to the calculated basic static electronic relationship, and determining an averaged cutting point of the segments based on information about actual dimensions of the segments and actual positioning of the segments in the filter roller, obtained from the sensor, wherein the feeding unit, the cutting head and the format tape are driven by separate servomotors coupled by a common, virtual electronic shaft connected with the control system.