Method And Apparatus For Transporting Cigarettes Or The Like Between Producing And Processing Machines

What is this patent about?

'040 is related to the field of automated handling of rod-shaped articles, specifically cigarettes, between a producing machine (like a filter tipping machine) and a consuming machine (like a packing machine). The background involves conveyor systems with inlets/outlets to handle surplus cigarettes, but these systems often damage the cigarettes due to rubbing against stationary articles.

The underlying idea behind '040 is to minimize damage to cigarettes during transport between machines by continuously diverting surplus cigarettes into a tray filler and reintroducing them downstream via a magazine filler. This creates a circulating buffer that prevents stagnation and reduces relative movement between cigarettes.

The claims of '040 focus on a conveyor system with two junctions. The first junction diverts excess cigarettes into a tray filler, and the second junction, downstream, admits cigarettes from a magazine filler. The system maintains a continuous flow at both junctions, ensuring that cigarettes are always moving, even if only at a trickle.

In practice, the system uses sensors to monitor cigarette levels at various points. If the packing machine slows down, the excess cigarettes are diverted to the tray filler. Filled trays are then transferred to the magazine filler, which feeds cigarettes back into the main stream. This closed-loop system ensures a constant supply to the packing machine, even with fluctuations in production or consumption.

This design differs from prior approaches by actively circulating the surplus cigarettes instead of simply storing them statically. The continuous, albeit sometimes minimal, flow at the junctions prevents prolonged contact and rubbing, thus reducing damage. The use of tray and magazine fillers provides a gentle handling mechanism compared to direct transfer methods.