Device and method for rolling cigarettes, filter cigarettes or filters

A rolling device, comprising:

• a feed conveyor configured to transversely feed groups of pieces of cigarettes/filters and patches for connecting the groups, each group being defined by at least two axially aligned pieces and each patch being positioned tangentially to a group of pieces starting from an end of it preferably glued to the group itself,
• a rolling channel delimited, at one end, by a rolling portion of the feed conveyor, and at the other end, by a rolling unit located at a distance from the rolling portion such as to define a width of the rolling channel which is approximately the same as the diameter of the groups, wherein the rolling channel is adapted, in a use configuration of the rolling device, to be traveled transversely by each group of pieces which, as they advance in a travelling direction between an infeed station and an outfeed station of the rolling channel, rolls on the rolling portion and on the rolling unit rotating about its longitudinal axis,
• wherein the rolling unit comprises an infeed rolling bed and an outfeed rolling bed located in succession along the travelling direction of the rolling channel and defining an infeed stretch and an outfeed stretch of the rolling channel, respectively, adapted to roll each group of pieces by an infeed rolling angle and an outfeed rolling angle, respectively,
• and in that the infeed rolling bed is movable along the travelling direction independently of the outfeed rolling bed to produce different rolling modes along the infeed stretch and along the outfeed stretch.