Package Forming Apparatus with Movable Sealing Elements

The patent applies dynamics by making the operative groups movable rather than fixed. The first and second operative groups can be independently displaced along the tube advancement path, allowing dynamic adjustment of their positions to create laterally displaced sealing bands without physically inclining the entire tube. This resolves the contradiction by achieving the desired package shape through dynamic positioning of sealing elements rather than static tube inclination.

The patent segments the sealing function into two independent operative groups: a first operative group for bottom sealing and a second operative group for top sealing. Each group can be controlled and positioned independently, allowing the top sealing band to be laterally displaced from the bottom sealing band. This segmentation enables complex package configurations without requiring the entire tube manipulation system to be inclined.

The patent incorporates a control unit that receives signals from a sensor system and automatically adjusts the positions of the first and second operative groups. The sensor detects the actual positions of the operative groups and feeds this information back to the control unit, which then commands the positioning systems to make precise adjustments. This closed-loop feedback control enables automatic adaptation to produce packages with laterally displaced sealing bands without manual intervention, thereby maintaining versatility while significantly improving productivity.

The patent replaces manual mechanical adjustment with an automated control system. The control unit electronically controls the displacement of the operative groups along the tube advancement path, substituting manual mechanical operations with automated electro-mechanical systems. This substitution maintains the adaptability to produce various package configurations while eliminating the productivity loss associated with manual adjustments.

The patent makes the sealing operative groups dynamic and independently positionable along the tube advancement path. Instead of requiring complex physical inclinations of the tube, the first and second operative groups can be independently displaced to their required positions. This dynamic positioning system simplifies operation because the tube remains in a straightforward vertical advancement path while the sealing elements adapt their positions programmatically.

The patent introduces a control unit as an intermediary between the operator's requirements and the physical sealing operation. The control unit translates operational requirements into precise positioning commands for the first and second operative groups, mediating between the simple desire for laterally displaced sealing bands and the complex mechanics of achieving them. This intermediary layer simplifies operation by abstracting away the mechanical complexity.