Flat Panel Display Disassembly for Safe Automated Recycling
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Solution Overview
Problem
Current methods for recycling flat panel displays (FPDs) are inefficient and pose environmental and economic challenges due to the rapid obsolescence of technology, leading to a significant waste stream of hazardous materials, and lack automation for specific types and models, necessitating a high-throughput, safe, and adaptable recycling process.
Innovation Solution
An automated apparatus and process for disassembling FPDs, utilizing a cutting station, characterization station, and data processing system to determine appropriate cutting protocols based on measured parameters and identifiers, allowing for robotic disassembly and separation of hazardous components, applicable to various FPD types without operator input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional shredding methods are used for FPD recycling, then processing speed is high, but hazardous materials are not properly separated and environmental safety is compromised
Solution Approach 1:
The FPD recycling process is segmented into distinct stages: characterization to identify FPD type, selective cutting to separate hazardous components (CCFL tubes, battery) from valuable components (screen, circuit board), and separate processing streams. This segmentation allows high-throughput processing while ensuring proper separation of hazardous materials through automated identification and targeted disassembly protocols
Solution Approach 2:
An automated characterization system acts as an intermediary between the FPD input and the cutting/disassembly process. This system identifies FPD type, size, and configuration, then provides control signals to the cutting apparatus to adapt cutting paths and parameters automatically, enabling high-speed processing while maintaining safety through precise, adaptive separation of hazardous components
2Object-affected harmful factors
If manual disassembly methods are used for FPDs, then hazardous materials can be carefully removed, but processing throughput is low and labor costs are high
Solution Approach 1:
The FPD itself provides information about its type, size, and configuration through the automated characterization system (optical scanning, weight measurement). This self-identification enables the system to automatically select appropriate cutting protocols and parameters without manual intervention, achieving both safe hazardous material removal and high processing throughput through automated, adaptive disassembly
Solution Approach 2:
Manual mechanical disassembly is replaced with an automated system combining optical characterization, weight measurement, and computer-controlled cutting apparatus. The characterization data automatically controls cutting path and parameters, substituting human operation with automated sensing and control systems that maintain safety while dramatically increasing processing throughput
3Device complexity
If a single recycling process is used for all FPD types, then processing is simple, but accuracy in handling different FPD configurations is poor
Solution Approach 1:
The recycling process is made dynamic and adaptive through automated characterization. The system measures FPD weight, dimensions, and configuration, then automatically adjusts cutting paths, cutting depth, and processing parameters in real-time. This dynamic adaptation maintains process simplicity from the user perspective while achieving high cutting accuracy for diverse FPD configurations through automated control
4Productivity
If automated cutting is implemented without FPD characterization, then processing speed increases, but cutting accuracy and safety are compromised
Solution Approach 1:
Characterization measurements (optical scanning, weight measurement, dimension measurement) are performed preliminarily before the cutting process. This preliminary identification of FPD type, size, and configuration enables the system to pre-calculate optimal cutting paths and parameters, ensuring both high processing speed and high cutting precision through automated, data-driven control of the disassembly process
Data Source
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AI summary
The present invention concerns the field of safe disposal or recycling of devices which include flat panel displays (FPDs) such as televisions, public information screens and signs, advertising panels, computer monitors and lap-tops, tablets and computers with integrated flat panel displays. The invention provides an apparatus for the disassembly of flat panel display units (FPDs) which each comprise a display screen provided on the front face of the FPD and a housing which accommodates the screen and associated electronic circuitry, the apparatus comprising: (i) a cutting station for receiving an end-of-life FPD, the cutting station being configured and arranged to make cuts into the FPD along cutting paths which permit detachment of the entire display screen, or a cut-out sub-unit of the display screen, from the FPD, (ii) an FPD characterisation station provided in advance of, or at, the cutting station, the characterisation station being adapted to measure and/or log one or more characterising parameters or identifiers of the FPD in advance of the cutting step, (iii) a data processing system in data communication with the FPD characterisation station, the data processing system being adapted to receive and one or more of said parameters or identifiers, and derive therefrom an appropriate protocol for cutting the FPD display screen, and provide instructions in accordance with the protocol which are sent back to the cutting station so as to control the cuts. An FPD database may be associated with the data processing system, the FPD database being pre-loaded with cutting path instructions for a range of known FPDs.