Flat Screen Cutting Strategy for Component Recovery

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Solution Overview

Problem

Conventional methods for dismantling flat screens often result in the release of toxic substances and damage to recyclable components, making it difficult to recover valuable materials like liquid crystals and metals.

Innovation Solution

A method for cutting flat screens involves determining the dimensions and three-dimensional position of the screen, defining a cutting line parallel to the frame with a constant predetermined distance, and using laser profilometry to ensure precise cutting while preserving the integrity of the slab and frame.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional grinding methods are used to destroy flat screens, then the dismantling process is simple and fast, but toxic substances are released and recyclable components are damaged

Engineering Contradiction:
Improvedismantling speedVSAvoidtoxic substance release
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The invention divides the dismantling process into two distinct stages: first, cutting the frame along predefined lines to separate it from the slab, and second, then destroying or recycling the frame. This segmentation allows the slab with toxic substances to remain intact and isolated, preventing contamination and release of toxic materials during the destruction phase while maintaining high productivity through automated cutting processes.

Inventive Principle:
Principle #1Segmentation

2Productivity

If conventional grinding methods are used to destroy flat screens, then the dismantling process is simple and fast, but recyclable components like liquid crystals and metals are damaged

Engineering Contradiction:
Improvedismantling speedVSAvoidloss of recyclable materials
Core Design Contradiction:
ProductivityVSLoss of substance

Solution Approach 1:

The invention separates the frame from the slab through precise cutting along predefined lines, allowing the slab containing valuable recyclable materials (liquid crystals, metals) to remain intact. The frame alone is then subjected to destruction or recycling processes, ensuring that recyclable constituents are preserved and can be recovered without damage while maintaining efficient productivity.

Inventive Principle:
Principle #1Segmentation

3Ease of manufacture

If the cutting line is defined at a constant distance from the reference line, then the cutting strategy is simple and reproducible, but it cannot adapt to deformed frames

Engineering Contradiction:
Improvecutting strategy definitionVSAvoidadaptability to frame deformation
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The invention makes the cutting system adaptive by detecting the actual position of the frame edges and dynamically adjusting the cutting line definition. Instead of relying solely on a fixed geometric offset from a reference line, the system uses sensors or vision systems to detect frame deformations and recalculates the cutting line to maintain the required safety distance from the slab, thus adapting to various frame states while preserving the simplicity of the constant-distance principle.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP2760587B1Method for establishing a strategy for cutting out a flat screen
Publication Date: 2015.07.15 VEOLIA PROPRETE
  • EP2760587B1 patent drawingFigure 1~3
  • EP2760587B1 patent drawingFigure 4~5

AI summary

The invention relates to a method for establishing a strategy for cutting out a flat screen (10) including an exposed panel (12) and a frame (11), with a view to upgrading at least a portion of the components thereof, comprising the steps of: determining (110) the dimensions of the exposed panel and the outer dimensions of the screen at least in the plane of the exposed panel; defining (120) the three-dimensional position of the screen in a three-dimensional frame of reference space; defining (130), in the frame of reference, at least one reference line (REF) that is parallel to one of the edges of the frame; and defining (140) at least one cutting line (CUT) of the frame, from which the distance (DC) to the reference line is constant and predetermined.