Method and apparatus for joining coaxial rod-shaped articles

Tobacco – Cigar or cigarette making – Tip or mouthpiece applying or forming

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A24C 508, A24C 510

Patent

active

044455194

ABSTRACT:
Groups of coaxial filter rod sections and plain cigarettes are delivered onto the peripheral surface of a rotary drum in such orientation that each group extends in parallelism with the axis of the drum and overlies the adhesive coated outer side of a discrete uniting band which adheres to the surface by suction and is formed on the drum in such a way that its leader overlies a groove in the surface. The cigarettes of each group are attracted to the drum by suction, and the sections of the groups are mechanically urged against the leaders of the respective bands by claws which are retractible into and extendable from the drum by one or more stationary cams, followers which track the cams and gears which receive motion from the followers and rotate discs having eccentric pins coupling them to the respective claws. The claws are disengaged from the respective sections, and the ports in the surface of the drums cease to attract the cigarettes and the bands before the groups reach a rolling gap wherein they rotate about their respective axes and convolute the bands around the respective sections and the adjacent end portions of the cigarettes. The claws prevent misorientation or separation of sections from the drum when the latter is driven at a high peripheral speed so that the sections tend to fly away under the action of gravity and/or centrifugal force.

REFERENCES:
patent: 3363632 (1968-01-01), Gamberini
patent: 3527234 (1970-09-01), Hinzmann
patent: 4044779 (1977-08-01), Preston et al.
patent: 4077415 (1978-03-01), Preston et al.
patent: 4191198 (1980-03-01), Chopko
patent: 4236535 (1980-12-01), Schmidt et al.
patent: 4237907 (1980-12-01), Pawelko et al.
patent: 4262680 (1982-11-01), Hinzmann

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