| 摘要 |
<p>A conveying unit for transferring a mass (2) of cigarettes (3) includes a feed channel (5) equipped with a conveyor (10) by which cigarettes (3) are made to flow along a given path (P) and in a given direction (D) toward the mouth of a hopper (4) that forms part of a user unit. One section of the feed channel (5) presents a movable wall (28) consisting of an articulated mechanism (29) in which two rigid restraints (15, 18), one rectilinear (15) and one arched (18), are connected together pivotably by a hinge (19); the end of the arched restraint (18) is connected to a fixed hinge (23), whilst the end of the rectilinear restraint (15) is connected to a movable hinge (20) rigidly associated with a guided slide device (22) capable of movement along the direction (D) in which the flow of cigarettes (3) is advanced, in response to variations in the rate of flow along the channel (5). As the movable end is displaced, the movable wall (28) shifts between two limit positions corresponding respectively to a maximum and a minimum capacity of the section of the feed channel (5) occupied by the wall (28). <IMAGE></p> |
