S-Shaped Cutting Disc Blade to Prevent Food Jamming
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Solution Overview
Problem
Cutting appliances for foodstuffs, particularly vegetables, face inefficiencies due to prolonged cutting times and jamming issues caused by foodstuff migration towards the hub or periphery of the receptacle, leading to suboptimal cutting quality and increased waste.
Innovation Solution
A cutting disc with an S-shaped cutting edge, where the convex portion is located on the hub side to guide foodstuffs from the central area towards the middle, and the concave portion acts like a sickle to redirect those from the periphery inward, reducing jamming and improving cutting efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional blade is used, then the structure is simple, but foodstuffs migrate to hub or periphery causing jamming and extended cutting time
Solution Approach 1:
The cutting edge is designed with an S-shaped curved profile instead of a straight line. The convex portion near the hub and concave portion toward the periphery create sliding surfaces that guide foodstuffs toward the middle cutting zone, preventing migration to hub or periphery and eliminating jamming while maintaining continuous cutting action
Solution Approach 2:
Different portions of the cutting edge have different geometric properties: the convex portion handles foodstuffs from the central area, the concave portion handles foodstuffs from the peripheral area, and the middle portion performs the actual cutting. Each zone is optimized for its specific function in the cutting process
2Reliability
If the blade guides foodstuffs to the middle portion, then jamming is reduced, but the blade geometry becomes more complex
Solution Approach 1:
The S-shaped curved profile integrates multiple functions into a single continuous geometry. The convex and concave portions work together to guide foodstuffs from both central and peripheral areas toward the middle cutting zone, providing reliable jamming resistance through geometric design rather than additional mechanical components
Data Source
AI summary
A cutting disc for cutting foodstuffs, intended for a receptacle of an appliance of the vegetable cutting type, includes: a rotary drive hub, a supporting disc firmly secured to the hub, and at least one blade attached on the supporting disc and extending radially from the hub. The blade comprises a cutting edge with the shape of an “S”, the convex portion of the “S” being located on the side of the hub so as to cause the foodstuffs to slide against the cutting edge from a central area of the receptacle towards a middle portion of the cutting edge under the action of the rotation of the supporting disc and of the blade, and the concave portion of the “S” being configured as a sickle in order to cause the foodstuffs to slide against the cutting edge from a peripheral area of the receptacle towards the middle portion.