Oblique Orientation Drum for Packing Machine Format Changes
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Solution Overview
Problem
Existing packing machines for producing cigarette packets are complex, heavy, and expensive due to the complexity of the orientation unit, which complicates format changes and increases production costs.
Innovation Solution
A packing machine with a simplified orientation unit featuring a single, small, and lightweight orientation drum with obliquely mounted pockets that rotate along a circular path, allowing for efficient orientation of inner wrappings without the need for a cam system, enabling quick format changes and reduced production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a drum with peripheral pockets and cam system is used for orientation change, then the orientation change function is achieved, but the device becomes complex and heavy
Solution Approach 1:
The patent extracts and removes the cam system from the orientation unit, retaining only the essential drum with pockets structure. The drum is mounted on a horizontal axis and rotates to change orientation of packets, eliminating the complex actuating mechanism while preserving the core orientation function.
Solution Approach 2:
Instead of using a vertical drum with complex cam actuation, the patent inverts the approach by using a horizontal drum that rotates simply on its axis. This inversion simplifies the mechanical structure and reduces complexity while achieving the same orientation change objective.
2Manufacturing precision
If a complex orientation unit with cam system is used, then orientation control is precise, but the weight increases
Solution Approach 1:
The cam system is completely removed from the orientation unit, keeping only the drum structure with pockets. This extraction eliminates unnecessary weight while maintaining precise orientation control through the simple rotation of the horizontally mounted drum.
3Ease of operation
If the orientation unit is complex and heavy, then the orientation change is effective, but the format change operation becomes time-consuming
Solution Approach 1:
The orientation drum is designed as a separable component that can be easily removed and replaced. The drum with pockets is mounted on a horizontal axis allowing it to be detached for format changes and reattached quickly, reducing downtime during format transitions while maintaining effective orientation change capability.
4Ease of operation
If a drum with multiple components is used, then the orientation function is complete, but the production cost increases
Solution Approach 1:
The cam system is removed from the design, leaving only the essential drum with pockets structure. This simplification reduces manufacturing complexity and material requirements, thereby lowering production costs while maintaining complete orientation functionality through horizontal rotation.
Solution Approach 2:
By inverting from a vertical cam-actuated drum to a horizontal rotating drum, the patent reduces the number of components needed. This inverted approach simplifies manufacturing and reduces costs while achieving the same complete orientation function.
Data Source
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Figure 3
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AI summary
Orientation unit (16) and method for causing a change in orientation of a parallelepiped-shaped article (3) in a packing machine (12); the orientation unit (16) having: an input station (S1) in which the article (3) is oriented according to an input plane (A); an output station (S2) in which the article (3) is oriented according to an output plane (B); and an orientation drum (17) which can rotate around a rotation axis (18) and supports a parallelepiped-shaped pocket (19) which advances along an orientation path (P1) between the input station (S1) and the output station (S2); the rotation axis (18) of the orientation drum (17) is arranged obliquely, i.e. neither parallel nor perpendicular with respect to the input plane (A) and to the output plane (B) and/or the rotation axis (18) of the orientation drum (17) is arranged obliquely, i.e. neither parallel nor perpendicular with respect to the walls of the pocket (19).