Corrugated Knife Clamping Structure for Stable Potato Slicing

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Solution Overview

Problem

Traditional cutting tools for potato slices suffer from rigidity issues, leading to broken slices, poor quality, and difficulty in firmly clamping the knife due to slender pressing tips that bend easily and deform, resulting in inconsistent cutting performance.

Innovation Solution

A corrugated knife assembly with a pressing unit featuring ridges and oblique faces that firmly clamp the knife, using ridges with notches and oblique faces to distribute pressure evenly and prevent bending, ensuring the knife remains securely in place during slicing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a traditional pressing piece with a straight pressing edge is used to clamp the knife, then the knife can be held in place, but the pressing piece is rigid and causes potato slices to break

Engineering Contradiction:

Improveknife clamping stabilityVSAvoidpotato slice breaking

Core Design Contradiction:

Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The pressing piece is divided into multiple pressing tips instead of being a single rigid structure. Each pressing tip is slender and can independently deform to accommodate the potato slices, reducing the harmful rigid pressing effect while maintaining overall clamping stability through the segmented structure

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The pressing tips are designed as slender, flexible structures that can bend and adapt to the contours of the potato slices. This flexibility allows the pressing piece to conform to the irregular shapes of the slices without causing breakage, while still providing sufficient clamping force to hold the knife firmly

Inventive Principle:

Principle #30Flexible shells and thin films

2Object-affected harmful factors

If multiple slender pressing tips are used to reduce rigidity, then potato slice breaking is reduced, but the pressing tips bend easily and fail to firmly clamp the knife

Engineering Contradiction:

Improvepotato slice breakingVSAvoidknife clamping stability

Core Design Contradiction:

Object-affected harmful factorsVSStability of the object's composition

Solution Approach 1:

Multiple slender pressing tips are merged into a single integrated pressing piece structure. This combination allows each tip to remain flexible and slender for gentle contact with potato slices, while the unified structure provides overall rigidity and stability to firmly clamp the knife during slicing operations

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If pressing tips are pushed by potato slices, then adaptation to slice shape is improved, but remains accumulate between the pressing piece and knife and are hard to remove

Engineering Contradiction:

Improvepressing tip adaptation to slice shapeVSAvoidcleaning and maintenance difficulty

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The design extracts and eliminates the problem of food residue accumulation by creating gaps and smooth surfaces that prevent remains from getting trapped. The pressing piece structure is configured to minimize crevices where food could accumulate, making cleaning easier while maintaining adaptability to potato slice shapes

Inventive Principle:

Principle #2Taking out (Extraction)

4Stress or pressure

If an obliquely cut face is used at the pressing edge, then pressing force is dispersed, but the pressing tips tilt up and cannot firmly press the knife

Engineering Contradiction:

Improvepressing force distributionVSAvoidpressing tip orientation stability

Core Design Contradiction:

Stress or pressureVSStability of the object's composition

Solution Approach 1:

The pressing tips are designed with asymmetric cross-sections and orientations that provide stable contact with the knife surface. The asymmetric geometry prevents the tips from tilting upward when force is applied, while still allowing the pressing force to be dispersed across multiple contact points for even pressure distribution

Inventive Principle:

Principle #4Asymmetry

Data Source

PatentEP4484094B1Corrugated knife assembly

Publication Date: 2026.01.21 TAIYI FOOD MACHINERY CO LTD

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AI summary

A slicing apparatus (200) has a mount and multiple corrugated knife assemblies (100) assembled to the mount. Each corrugated knife assembly (100) has an assembling base (20), a pressing unit (30), and a corrugated knife (10) clamped therebetween. The pressing unit (30) is connected to the assembling base (20) and has multiple ridges (31) and multiple pressing tips (32). The multiple ridges (31) protrude from a top surface of the pressing unit (30). Each ridge (31) has a notch (311) and an oblique face (312) formed at a rim of the notch (311) and obliquely downward extending from the top surface of the pressing unit (30). Each pressing tip (32) is disposed between adjacent two of the ridges (31). In the present invention, a bottom rim of each ridge (31) can firmly press the corrugated knife (10).