| 摘要 |
A feeding device for withdrawing from a feeding hopper (1) rod-like articles, particularly filter plugs in the manufacture of filter-tipped cigarettes, and for singling these articles. The device comprises a rotary fluted drum (2) forming at least part of the bottom of hopper (1), and a repelling roller (13) that is arranged between the wall (9) of the hopper (1) and the drum (2), in the vicinity of the end from which the drum comes out of the hopper, and that is rotated in a controlled manner in the same direction as the drum. The repelling roller (13) is so mounted that its axis is movable substantially parallel to the peripheral surface of drum (2) and, more particularly, it is carried by a lever (10) that is swingable about a shaft (4) which is concentric or close to the shaft (6) for the rotation of the drum. The repelling roller (13) is urged by a return device (14) toward a normal operative position in which it pushes back the rod-like articles not contained within the flutes (102) in drum (2), and prevents these articles from getting out of the hopper (1) or from becoming wedged between the wall (9) of the hopper and the drum (2). The abnormal, deformed, or aggregated rod-like articles which are engaged in one flute (102) in drum (2), and protrude therefrom to a greater degree than the normal one, push the repelling roller (13) toward a displaced position in which a sensor is actuated and determines the stopping of drum (2) and/or of the machine associated with the feeding device. The travel of the repelling roller (13) from its normal operative position to its displaced position is a relatively long travel, so that the roller is given the possibility of pushing back the abnormal article or articles or of loosening their clusters, before promoting the stopping of the drum or of the machine.
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