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US 4,513,755 AGranted
Control device for regulating the feeding of cut tobacco to a cigarette making machine
AssigneeSasib S.p.A.
InventorBruno Baroni
Life of this patent
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AssigneeSasib S.p.A.
InventorBruno Baroni
Estimating the term…
This invention relates to an automatic control device adapted to regulate, without interruptions, cigarette-making process and in a substantially continuous way, the cut tobacco being re-circulated back to the distributor, as trimmed excess tobacco (S) from the uniform tobacco rod, formed in the pneumatic suction belt forming assembly (N) of a continuous cigarette-making machine. Said device substantially comprises a detector suction head (1), through which all of said trimmed excess tobacco (S) is passed pneumatically, in its path of suction re-circulation, from trimmer (R) of the belt (N) the distributor of the cut tobacco for the formation of the rod. Said detector suction head (1) is associated with a photo-cell sensor (4, 5) whose light beam is liable to be attenuated by the total flow of trimmed cut tobacco (S) sucked through said head. Depending upon the intensity of said attenuation, said optical sensor (4, 5) generates a primary measurement and control signal indicating the specific output of said excess tobacco. Associated with the detector suction head (1), inserted in the sucking ducts (2, 3) from the trimmer (R) to the distributor, is a regulatable means for controlling the total flowrate of the distributor, adapted to control said flowrate as a function of said primary measurement signal indicating the recirculated excess tobacco (S) to said distributor.
An automatic control device for regulating with no interruption in the cigarette manufacturing process, the cut tobacco recirculated to the tobacco distributor, as excess tobacco trimmed from the uniform tobacco rod produced in the suction belt forming assembly of a continuous cigarette making machine, characterized in that it comprises a detector suction head inserted in the suction duct from the trimmer to the distributor, the whole of said trimmed excess tobacco being passed therethrough on its suction recirculation path from the trimmer at the rod-forming belt to the distributor of the cut tobacco, said head being associated with a photoelectric sensor whose light beam can be attenuated by the total flow of trimmed tobacco being sucked through said head, said sensor generating, as a function of the value of this attenuation, a primary control and measurement signal representing the specific production of trimmed tobacco, said detector head having associated therewith adjustable means adapted to control the flowrate of the distributor as a function of said primary measurement signal representing the amount of trimmed excess tobacco recirculated to said distributor.
An automatic control device for use in combination with a continuous cigarette making machine, the machine including a tobacco distributor, a suction belt assembly for forming a uniform tobacco rod from cut tobacco dispensed by the tobacco distributor, a trimmer adjacent to the suction belt assembly for trimming excess tobacco from the uniform tobacco rod and a suction duct between the trimmer and the distributor for recirculating the trimmed excess tobacco to the distributor, said control device being operative for regulating the amount of recirculated tobacco without interrupting the operation of the cigarette making machine, said device comprising:
Dependencies are inferred from the claim text.