Segmented Cutting Knife for Feed Mixer Augers

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Solution Overview

Problem

The service life of cutting knives in feed mixers is unsatisfactory due to rapid wear of blade edges, particularly with profiled edges like corrugated or jagged ones.

Innovation Solution

A feed mixer design featuring a cutting knife with multiple segments spaced by recesses, which slows down feed movement and reduces wear on blade edges, while also allowing for more flexible and durable knife construction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If cutting knives have profiled blade edges (corrugated or jagged), then cutting performance is improved, but blade edges wear out quickly

Engineering Contradiction:

Improvecutting performanceVSAvoidservice life of cutting knife

Core Design Contradiction:

ProductivityVSDuration of action of moving object

Solution Approach 1:

The cutting knife blade is divided into multiple segments separated by recesses. This segmentation allows the blade to flex and absorb stress, preventing the rapid wear that occurs with continuous profiled edges while maintaining the cutting effectiveness of the profiled surface.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention changes the structural parameter of the blade from a continuous profiled edge to a segmented structure with recesses. This parameter change allows the blade to maintain profiled cutting edges for effectiveness while the recesses provide stress relief and flexibility, reducing wear.

Inventive Principle:

Principle #35Parameter changes

2Stability of the object's composition

If cutting knife blade is made rigid to maintain edge integrity, then cutting stability is improved, but flexibility decreases

Engineering Contradiction:

Improveblade edge integrityVSAvoidblade flexibility

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

By segmenting the blade into multiple sections separated by recesses, the invention creates a structure that appears rigid when viewed as a whole (maintaining edge integrity) but is actually flexible due to the recesses allowing individual segments to move independently, thus resolving the contradiction between rigidity and flexibility.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The segmented blade structure transitions from a static rigid design to a dynamic flexible structure. The recesses allow the blade segments to move and adapt during operation, providing the necessary flexibility while the overall blade structure maintains sufficient rigidity for stable cutting.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20250025886A1Cutting knife for mixing augers of a feed mixer

Publication Date: 2025.01.23 TRIOLIET BV

AI summary

Feed mixer for shredding and mixing feed, in particular fibrous plant material, comprising a mixing container for receiving feed, wherein the mixing container has a base and a wall extending upwardly from the base, wherein the mixing container comprises a mixing auger arranged to be rotatable in the mixing container, wherein the mixing auger comprises at least one cutting knife, wherein the at least one cutting knife comprises a plurality of segments, wherein the plurality of segments each comprises a blade edge, and wherein the segments are spaced from one another by recesses.