Patent ID: 8992400
Filing Date: 2015-03-31
Classification: A24D

Abstract:
1. A machine for manufacturing composite filters attachable to cigarettes or other tobacco items, the machine comprising: a feed conveyor supplying pairs of filter groups, each group comprising at least two longitudinally aligned filter plugs; a forming station for forming two continuous filter rods, comprising a garniture tongue on which the two rods are assembled, wherein the garniture tongue comprises a garniture station, at which the filter groups are progressively wrapped in a strip of wrapping material to obtain filter rods, and two conveyors each designed to convey one of the two filter groups along a respective feed line towards the garniture station; a cyclic cutting mechanism by which the two continuous filter rods are divided up simultaneously to produce corresponding composite filters; a sensor serving to monitor a phase value of at least one of the rods, relative to the cutting mechanism; at least one transfer device, located between the feed conveyor and the two conveyors of the garniture tongue and by which the filter groups are drawn from the feed conveyor and directed along the feed lines; at least one release device, located between the at least one transfer device and the two conveyors of the garniture tongue, by which the two filter groups are drawn from the transfer device and released in phase one with another on the two conveyors; a control unit connected to the sensor and to the release device and governing a rate at which the filter groups are released by the release device, according to a monitored phase value of at least one of the continuous filter rods relative to the cutting mechanism.