Elastic Member Cutting System for Packaging Misalignment

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Solution Overview

Problem

Current cutting systems for packaging materials are inefficient and prone to material waste due to misalignment issues, requiring extensive calibration and being sensitive to vibrations and thermal expansions, which leads to damage of tools and anvils during high-speed manufacturing.

Innovation Solution

A cutting system with an elastic member positioned between the cutting tool and anvil to absorb forces, allowing conventional cutting tools to be used with reduced sensitivity to misalignment, vibrations, and thermal expansions, and enabling high-speed production by integrating the cutting knife with a rigid support and using a rotational system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a rigid cutting tool and anvil system is used to achieve precise cutting, then cutting precision is improved, but the system becomes highly sensitive to misalignment, vibrations, and thermal expansions causing tool damage

Engineering Contradiction:

Improvecutting precisionVSAvoidsystem sensitivity to misalignment and vibrations

Core Design Contradiction:

Manufacturing precisionVSReliability

Solution Approach 1:

The patent applies beforehand cushioning by positioning an elastic member between the cutting tool and anvil before the cutting operation. This elastic member absorbs misalignment errors, vibrations, and thermal expansions during the cutting process, preventing damage to the cutting tool and anvil while maintaining precise hole cutting in the packaging material.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Loss of substance

If extensive calibration and alignment is performed to reduce material waste, then manufacturing precision is improved, but production time and complexity increase

Engineering Contradiction:

Improvematerial wasteVSAvoidcalibration and alignment time

Core Design Contradiction:

Loss of substanceVSLoss of time

Solution Approach 1:

The elastic member is positioned in advance between the cutting tool and anvil to absorb misalignment errors during operation. This eliminates the need for extensive calibration and alignment procedures, reducing both setup time and operational complexity while preventing material waste from cutting errors.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Reliability

If the cutting system is made more robust to withstand vibrations and thermal expansions, then reliability is improved, but the system complexity and manufacturing cost increase

Engineering Contradiction:

Improveresistance to vibrations and thermal expansionsVSAvoidsystem structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The elastic member serves as a simple yet effective cushioning element that absorbs vibrations and thermal expansions during cutting operations. This single component provides robustness without requiring complex structural modifications to the cutting tool or anvil system.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The patent changes the physical state or properties of the support surface by making it elastic rather than rigid. This allows the support surface to deform elastically under load, absorbing vibrations and thermal expansions, thereby improving reliability without increasing system complexity.

Inventive Principle:

Principle #35Parameter changes

4Ease of manufacture

If conventional rigid cutting tools are used, then ease of manufacture is improved, but the system becomes sensitive to misalignment causing tool damage

Engineering Contradiction:

Improvetool manufacturing simplicityVSAvoidtool sensitivity to misalignment

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The elastic member is positioned between the conventional rigid cutting tool and anvil to absorb misalignment errors during operation. This allows the use of simple, easily manufactured rigid tools without requiring complex alignment procedures or specialized tooling, while preventing tool damage from misalignment.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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

The system reduces material waste, extends tool life, and improves cost-effectiveness by allowing precise cutting with less sensitivity to misalignment and environmental factors, enabling high-speed production of packaging materials with accurate hole-cutting.

Implementation Method 1

an elastic member which is positioned to absorb at least a part of a force applied when the cutting tool is pressed against the anvil

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS10850422B2Cutting system, and a method for cutting a web or sheet of material

Publication Date: 2020.12.01 TETRA LAVAL HOLDINGS & FINANCE SA

AI summary

The present disclosure relates to a cutting system for providing holes in a core material layer. The cutting system has a cutting tool having a cutting knife configured to cut through the core material layer, and an anvil having a rigid support surface for receiving the cutting knife of the cutting tool. The cutting system further has an elastic member that is positioned to absorb at least a part of a force applied when the cutting tool is pressed against said anvil.