| 摘要 |
The device is conventionally associated to a cigarette packaging machine and comprises a hopper for successively distributing individual layers of adjacently disposed cigarettes into transferring means which successively transfer each layer into compartments intermittently moved in front of said transferring means. A plurality of layers are superimposed in each compartment to form a bundle to be fed to the wrapping means of the packaging machine. During the transferring, the layers are compelled to pass through a passage delimited by side guiding members and by an upper and a lower light-transparent guiding plate, said passage having a width substantially equal to the width of a layer and a height substantially equal to the diameter of a cigarette. The upper plate has a slot in the direction of the transverse dimension of the passage and this slot is subjected to the light rays generated by a light source transversely disposed relative to said passage and above said slot. The lower plate rests on a mounting having a number of built-in seats each aligned with a cigarette of a layer and each housing a photosensitive element. Should a defective layer be lacking of a cigarette a light ray energizes the photosensitive element provided in the position corresponding to said lacking cigarette so as to operate, through conventional cyclic and memory means, the ejection of that bundle containing said defective layer. |
