Cutting Laminated Glass with Taut Plastic Interlayer
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Solution Overview
Problem
Current methods for cutting laminated glass, which involve manual or automated cutting tools, often result in splinters and premature wear of blades, leading to quality issues and material scrapage due to the difficulty in accurately trimming the overhanging plastic interlayer.
Innovation Solution
A device and process that incorporates pulling means to stretch and keep the overhanging plastic interlayer taut before cutting, allowing for a clean and precise cut at a distance from the glass edges, using rotating parts with conical bodies to grip and stretch the material, ensuring effective cutting without contact with the glass.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If cutting means contact the glass edge to trim the overhanging portion, then cutting precision is improved, but blade wear increases and glass splintering occurs
Solution Approach 1:
The patent introduces a stretching device as an intermediary component that acts on the overhanging portion before cutting. This device stretches the plastic material taut, creating a stable cutting surface that allows the cutting means to operate precisely without directly contacting or exerting excessive force on the glass edge, thereby preventing blade wear and glass splintering while maintaining cutting accuracy
2Device complexity
If manual cutting methods are used, then device complexity is reduced, but manufacturing precision deteriorates
Solution Approach 1:
The patent applies preliminary action by stretching the overhanging portion of the plastic interlayer before the cutting operation. This pre-stretching action creates a taut, stable surface that significantly improves cutting accuracy and prevents splintering, while the stretching device itself remains relatively simple in design, thus improving precision without substantially increasing device complexity
3Productivity
If automated cutting means are used, then productivity is improved, but manufacturing precision deteriorates due to splintering and blade wear
Solution Approach 1:
The stretching device performs a preliminary action on the overhanging portion, stretching it taut before the automated cutting process. This pre-stretching creates optimal cutting conditions that prevent splintering and reduce blade wear, thereby maintaining high cutting quality while preserving the productivity benefits of automated cutting systems
Solution Approach 2:
The stretching device serves as an intermediary that prepares the material in advance, allowing the automated cutting means to operate more effectively. By creating a stable, taut surface, it enables automated cutting to achieve higher precision without the typical drawbacks of blade wear and glass splintering
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 solution enables efficient and accurate cutting of the plastic interlayer, minimizing waste and extending the lifespan of cutting tools by maintaining the interlayer's coplanarity with the glass edges, thus preventing splinters and wear, while optimizing the cutting distance and process.
Implementation Method 1
The device thus advantageously uses the elastic property of the material to be cut. By pulling on the material, this material being in a taut state
Implementation Method 2
rotating parts with conical bodies to grip and stretch the material
Data Source
AI summary
A device for cutting a flexible material of plastic type, laminated between two substrates and overhanging the edges of the substrates, includes a cutting tool and a pulling tool arranged upstream of the cutting tool.