| 摘要 |
A cigarette testing apparatus wherein a single layer of cigarettes is transported sideways in the flutes of two conveyors one of which exposes a first half of the wrapper of each cigarette thereon from the one to the other end of the cigarette and the other of which exposes the remaining half of the wrapper. A first optoelectrical scanning system monitors the first half of the wrapper of each cigarette on the first conveyor for the presence or absence of defects, and a discrete second optoelectrical scanning system monitors the remaining half of the wrapper of each cigarette on the second conveyor for the presence or absence of defects. Each of the two systems can employ two discrete scanning units having light sources, mirrors and lenses which focus light from the sources upon the respective halves of the wrappers, rows of photoelectric transducers, and elements which focus reflected light upon the transducers. The outputs of the transducers are connected with an evaluating circuit which generates defect signals for segregation of defective cigarettes from the remaining cigarettes. The defects which are ascertained by the apparatus include the absence of imprints, improper application of imprints, open seams and/or holes in the wrappers, absence of filter plugs in filter cigarettes, improper application of uniting bands which secure filter plugs to plain cigarettes, bending or other types of deformation of cigarettes, the presence of smudges and/or a combination of the above.
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