Rotating Drum Puck Compression for High-Speed Beverage Pad Forming
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Solution Overview
Problem
Existing apparatuses for making beverage pads face issues with high friction between rotating drum surfaces and beverage product, limiting maximum rotational speed, resulting in low production rates and inconsistent puck quality.
Innovation Solution
A puck forming device with a compression body that synchronously moves with the rotating drum, minimizing friction and allowing high rotational speeds, and a packaging device that ensures uniform puck thickness and sheet alignment, enhancing production efficiency and quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a stationary compression wall is used to compress beverage product in rotating drum recesses, then adequate compression force is achieved, but high friction occurs between the compression wall and drum surface, limiting maximum rotational speed and reducing production rate
Solution Approach 1:
The compression wall is changed from a stationary component to a movable component that moves synchronously with the rotating drum. The compression wall is positioned against the drum outer side surface and moves together with it, maintaining dynamic contact that minimizes friction while preserving compression capability. This dynamic configuration allows the system to operate at higher rotational speeds without excessive friction, thereby increasing production rate while maintaining adequate puck compression force
Solution Approach 2:
The movable compression wall acts as an intermediary between the rotating drum and the beverage product. By moving synchronously with the drum, it mediates the compression force application in a way that reduces relative motion and friction between the compression surface and drum, enabling higher operational speeds while maintaining compression effectiveness
2Force
If a stationary compression wall is used, then compression force is applied, but friction limits maximum rotational speed, resulting in inconsistent puck quality
Solution Approach 1:
The compression wall moves synchronously with the rotating drum, maintaining consistent dynamic contact that provides uniform compression force across all recesses regardless of rotational speed. This dynamic synchronization eliminates the friction-related variations that occur with stationary walls, ensuring consistent puck quality and density even at high rotational speeds
3Productivity
If the compression wall moves synchronously with the drum, then friction is minimized and production rate increases, but the compression mechanism becomes more complex
Solution Approach 1:
The compression wall movement is merged with the drum rotation by positioning the compression wall against the drum outer side surface, causing it to move synchronously with the drum. This merging eliminates the need for separate drive mechanisms for the compression wall, reducing overall system complexity while achieving the friction-minimizing synchronous motion required for high production rates
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables high-quality, uniformly thick beverage pads to be produced at increased rates by reducing friction and ensuring consistent puck formation and packaging, improving beverage extraction consistency.
Implementation Method 1
a dose of extractable or soluble beverage preparation product in a recess in the rotating drum positioned at an angular position opposite the counter surface to be compressed against, against which counter surface the dose of extractable or soluble beverage preparation product is compressible by the respective piston of the recess to form the compacted puck
Implementation Method 2
the compression body comprises drive means arranged to drive the counter surface moving opposite a circumferential part of the outer side surface of the rotating drum with a velocity corresponding to a velocity of the circumferential part of the outer side surface of the rotating drum
Data Source
AI summary
An apparatus for making a beverage pad having an amount of extractable or soluble beverage preparation product as a compacted puck enclosed between two sheets of filtering material comprises dosing means arranged for supply of a dose of extractable or soluble beverage preparation product to a puck forming device of the apparatus and further comprises a packaging device arranged to package a compacted puck received from the puck forming device between two sheets of filtering material to form the beverage pad. The puck forming device comprises a cylindrical rotating drum with an outer side surface having recesses for receiving in each recess a dose of extractable or soluble beverage preparation product. A bottom wall of each recess is formed by a movable piston arranged to move with respect to the outer side surface of the drum to vary a height of the recess in relation to an angular position of the recess on the circular circumference of the drum. The puck forming device further comprises a compression body adjacent to the rotating drum arranged to provide a counter surface to compress a dose of extractable or soluble beverage preparation product against. The compression body comprises drive means arranged to drive the counter surface moving along a circumferential part of the outer side surface of the rotating drum with a velocity corresponding to a velocity of the outer side surface of the rotating drum.