Device and a method for separating at least one continuous rod of forming material for tobacco products
AssigneeG.D S.p.A.
InventorsDavide Dall'osso, Massimo Sartoni, Fiorenzo Draghetti
Life of this patent
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Abstract
A continuous tobacco rod generated by a machine for making tobacco products is separated into reclaimable lengths by a device that comprises a pair of tension rollers designed to exert a pulling force on the rod, also a pair of brake rollers operating upstream of the tension rollers and serving to offer a measure of resistance to the action of the tension rollers; as a result of the interaction between the tension rollers and the brake rollers, the portion of the continuous rod extending between them is forced to break by tearing apart.
Claims24
1) a device for separating at least one continuous rod of forming material for the manufacture of tobacco products, applicable in particular to a machine for making tobacco products affording a feed path along which the continuous rod is caused to advance, and equipped with at least one cut-off device by which the continuous rod is severed and diverted from the feed path, wherein the function of the separation device is to engage the diverted continuous rod of forming material through the agency of a gripping unit designed to act on the diverted continuous rod by applying forces oriented substantially parallel to a longitudinal dimension of the rod and from opposing directions, so as to generate a tensile stress in the diverted rod that causes it to break by tearing apart and thus divide into a plurality of discrete lengths.
21) A machine for making tobacco products, establishing a feed path along which to advance a continuous rod of forming material used in fashioning the products, comprising:
- a forming unit by which the continuous rod of forming material is generated;
- a cutter device operating downstream of the forming unit generating the continuous rod, by which the selfsame rod is divided into discrete portions each ultimately constituting a single tobacco product;
- a cut-off device interposed functionally between the forming unit and the cutter device, capable of movement between a position of disengagement, in which the continuous rod of forming material is free to advance as normal along the feed path, and a position of interference in which the continuous rod is cut through and diverted from the feed path by the device;
- a separation device as in preceding claims, by means of which to divide the advancing continuous rod into discrete lengths.
22) A method of separating at least one continuous rod of forming material for making tobacco products into a plurality of reclaimable lengths, wherein the separation of the continuous rod of forming material involves the step of applying at least two forces oriented parallel to the longitudinal axis of the continuous rod and from opposing directions.
Dependencies are inferred from the claim text.