Beverage Brewing Unit Jaw Actuation for Capsule Centering and Ejection
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Solution Overview
Problem
Existing beverage brewing units face complexity and risk of blocking due to the need for telescopic or movable actuation means, and lack precise control over capsule positioning, leading to potential damage and unbalanced rotational extraction systems.
Innovation Solution
A beverage brewing unit with a capsule enclosing assembly featuring a pair of jaws that move between holding and release positions, driven by first and second actuation means arranged along the longitudinal axis, ensuring precise capsule centering and reliable handling through cam mechanisms and resilient biasing for stable positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If telescopic or movable actuation means are used to drive the jaws, then the capsule can be held and released, but the device complexity increases and risk of blocking occurs
Solution Approach 1:
The actuation mechanism is segmented into two independent cam mechanisms (first cam mechanism for closing jaws, second cam mechanism for opening jaws) positioned at different locations along the longitudinal axis. This segmentation allows each cam to perform a specific function independently, reducing the complexity of any single actuation component while maintaining reliable capsule handling through distributed actuation points.
Solution Approach 2:
The cam mechanisms are designed to preliminarily position the jaws in predetermined positions during the enclosure movement. The first cam mechanism preliminarily closes the jaws during the closing stroke, and the second cam mechanism preliminarily opens the jaws during the opening stroke. This preliminary positioning ensures reliable capsule engagement and release without requiring complex real-time control of movable actuation means.
2Manufacturing precision
If single actuation means is used, then device complexity is reduced, but precise control over capsule positioning is lost
Solution Approach 1:
The actuation system is divided into multiple cam mechanisms positioned at different locations along the longitudinal axis of the enclosure. Each cam mechanism independently controls jaw positioning at its specific location, enabling precise capsule centering through distributed control points rather than relying on a single complex actuation means.
Solution Approach 2:
Each cam mechanism is designed with specific local geometry to achieve precise positioning at its particular location. The first cam mechanism provides local precision for jaw closing position, while the second cam mechanism provides local precision for jaw opening position. This local optimization of actuation geometry enables overall precise capsule positioning without requiring a single complex global actuation system.
3Reliability
If jaws are held closed during entire movement, then capsule is securely held, but capsule ejection is prevented
Solution Approach 1:
The jaw actuation follows a periodic cycle synchronized with the enclosure movement. During the closing stroke, the first cam mechanism periodically closes the jaws to securely hold the capsule. During the opening stroke, the second cam mechanism periodically opens the jaws to enable capsule ejection. This periodic alternation between closed and open states ensures reliable capsule handling during insertion while facilitating easy ejection after brewing.
Solution Approach 2:
The cam mechanisms preliminarily position the jaws in the appropriate state (closed or open) based on the enclosure position. The first cam mechanism preliminarily closes the jaws before the capsule insertion point, and the second cam mechanism preliminarily opens the jaws after the brewing cycle. This preliminary positioning ensures the jaws are in the correct state for each phase of operation without requiring complex real-time adjustments.
Data Source
AI summary
A beverage brewing unit such as for machines for preparing beverages from capsules is disclosed and includes a casing and capsule enclosing and insertion assemblies. Methods of producing and using same are also disclosed.