Apparatus For Directly Linking One Or More Cigarette Making Machines To One Or More Cigarette Packing Machines

What is this patent about?

'445 is related to the field of cigarette manufacturing, specifically addressing the problem of buffering between cigarette making machines and cigarette packing machines. These machines often operate at slightly different speeds or experience intermittent stoppages, leading to inefficiencies. The invention aims to provide a variable volume storage unit that can compensate for these production imbalances.

The underlying idea behind '445 is to use a curved storage chamber with a conveyor belt to accumulate or release cigarettes as needed. Instead of a straight chamber, which can be bulky, the curved design allows for a larger storage capacity within a smaller footprint. The key is to maintain a constant curvature and use a specialized conveyor belt system.

The claims of '445 focus on an apparatus for directly linking cigarette making and packing machines. This apparatus includes transfer lines, at least one storage chamber with a constant curvature relative to a vertical axis, a conveyor belt within the chamber, and a movable wall to adjust the storage volume. The conveyor belt is driven by truncated cone-shaped rollers at the chamber's extremities.

In practice, the system works by sensing the pressure of cigarettes accumulating between the maker and packer. If the packer slows down, the pressure increases, triggering the conveyor in the storage chamber to start accumulating cigarettes. The movable wall adjusts to accommodate the influx. Conversely, if the maker slows down, the chamber releases cigarettes to maintain a steady flow to the packer. The truncated cone rollers ensure smooth belt movement along the curve.

The invention differentiates itself from prior art by combining the capacity benefits of curved storage units with the strength and reliability of straight-belt conveyors. Previous curved storage solutions used laterally flexible conveyors made of interconnected plastic pieces, which were prone to breakage. By using a laterally indeformable belt and a constant curvature, '445 avoids the stress and wear associated with constantly flexing belts, leading to a more robust and reliable buffering system.