Cutter Knife Plastic Layer Vibration Damping
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Solution Overview
Problem
Cutter knives in meat processing machines face challenges with disassembly and assembly efforts, risk of injury, vibration-induced cracks or breakage, and difficulty in cleaning, which affect their operational efficiency and safety.
Innovation Solution
The cutter knife design incorporates a plastic layer or element on the knife base, providing a positive and cohesive coating or arrangement that reduces vibrations, simplifies assembly and disassembly, and enhances cleaning ease, with the plastic acting as a spacing and sealing element between knife levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal cutter knife is used, then cutting performance is maintained, but vibrations cause cracks and breakage
Solution Approach 1:
The cutter knife combines metal cutting section with plastic mounting section and plastic layer. The plastic layer (polymer material) acts as a vibration dampening medium between the metal blade and the mounting structure, reducing vibration transmission that causes cracks and breakage in conventional all-metal designs.
Solution Approach 2:
The invention changes the material parameter of the mounting section from metal to plastic, which has different vibration characteristics. The plastic material provides higher damping characteristics, reducing the harmful vibrations that lead to cracking and breakage in traditional metal construction.
2Ease of operation
If separate sealing elements are used, then sealing function is provided, but assembly and disassembly effort increases
Solution Approach 1:
The sealing function is merged into the plastic layer itself. The plastic layer is designed to directly contact and seal against the mounting section surfaces, eliminating the need for separate sealing elements like gaskets or O-rings. This integration reduces the number of parts and simplifies assembly procedures.
Solution Approach 2:
The plastic layer serves multiple functions simultaneously: it acts as a vibration dampener, a sealing element, and a protective coating. This multi-functionality eliminates the need for separate dedicated sealing components, reducing assembly complexity while maintaining sealing effectiveness.
3Ease of manufacture
If metal surface is used, then structural strength is maintained, but cleaning difficulty increases
Solution Approach 1:
The plastic layer provides a non-stick surface that is easier to clean compared to traditional metal surfaces. The polymer material has different surface properties that prevent food accumulation and make cleaning more effective, while the metal cutting section maintains its structural strength and cutting performance.
Solution Approach 2:
Different parts of the cutter knife have different material qualities optimized for their specific functions: the cutting section is metal for strength and cutting performance, while the mounting section and plastic layer are polymer materials optimized for vibration dampening, sealing, and ease of cleaning.
4Reliability
If plastic layer is applied to knife base, then vibrations are reduced, but manufacturing complexity increases
Solution Approach 1:
The cutter knife is manufactured as a composite structure with the plastic layer integrated into the mounting section. This allows the vibration-dampening plastic component to be manufactured simultaneously with the metal cutting section through coordinated forming processes, avoiding the need for separate assembly steps and reducing overall manufacturing complexity despite the multi-material construction.
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
This design reduces the risk of cracks and breakage, improves safety by eliminating the need for separate sealing elements, and facilitates easier cleaning and maintenance, while maintaining the cutter knife's operational efficiency.
Implementation Method 1
the vibrations of the cutter knives during operation are to be reduced, thereby decreasing the risk of cracking and even breakage
Implementation Method 2
the material bond is created by an adhesive which is arranged between the surface of the knife base and the inner surface of the plastic element, forming an adhesive layer
Data Source
Figure 1~2
Figure 3
Figure 4~6
AI summary
The invention relates to a cutter knife (100) for a shredding machine or a mixer, wherein the cutter knife (100) comprises a cutting section as a knife blade (10) and a mounting section as a knife base (20), wherein the knife base (20) is a disc body or a disc body segment of the disc body, each having a central opening (50) for receiving a shaft, and wherein at least one knife blade (10) or several knife blades (10) are arranged on an outer end face (203) of the disc body or disc body segments. It is provided that a plastic layer (30') is partially or completely arranged on the surface of the knife base (20) of the cutter knife (100), or that a plastic element is partially or completely arranged on the surface of the knife base (20) of the cutter knife (100).