Optical Sheet Measurement for Accurate Continuous Length Cutting
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Solution Overview
Problem
Existing systems for cutting endless plate strands to length for material panels lack precision in determining and adjusting dimensions, angularity, and orientation, leading to inaccuracies in material panel production.
Innovation Solution
A system with detection areas monitored by units that detect material plates and measure their dimensions, orientation, and angularity, allowing for real-time adjustments of the cutting device to ensure accurate cutting based on measured data, using non-contact detection methods like light barriers and multiple detection units for enhanced accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional contact-based measurement methods are used to determine material plate dimensions, then measurement reliability is improved, but productivity decreases due to stopping the conveyor and device complexity increases
Solution Approach 1:
The patent replaces mechanical contact-based measurement systems with optical detection units that use light barriers and detectors to measure material plate dimensions, orientation, and angularity without physical contact, enabling continuous measurement during conveyor operation
Solution Approach 2:
The patent introduces optical fields (light barriers) as intermediaries between the measurement system and the material plates, allowing dimension determination through light interruption patterns without direct mechanical contact between sensors and measured objects
2Measurement precision
If multiple detection units are added to improve measurement precision, then measurement reliability is improved, but device complexity increases
Solution Approach 1:
The patent designs detection units that perform multiple measurement functions simultaneously - each unit can determine plate dimension, orientation, and angularity through different evaluation of the same light interruption signals, eliminating the need for separate specialized sensors for each parameter
Solution Approach 2:
The patent uses the temporal dimension (time-based signal evaluation) to extract multiple measurement parameters from a single spatial detection event, analyzing light interruption patterns over time to determine both dimensional and angular characteristics without adding spatial complexity
3Manufacturing precision
If real-time measurement and adjustment is implemented to improve manufacturing precision, then material plate dimensional accuracy is improved, but loss of time increases due to data processing and adjustment operations
Solution Approach 1:
The patent performs measurement and calculation operations during the material plate's conveyance through the detection zones, using pre-defined evaluation algorithms that process light interruption signals in real-time without requiring plate stopping or post-processing delays
Solution Approach 2:
The patent implements immediate feedback control where measured deviations in plate dimension, orientation, or angularity trigger automatic adjustment signals sent to the cutting device, creating a closed-loop system that corrects errors in near-real-time based on continuous measurement data
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 approach enables precise monitoring and adjustment of material panels during production, improving the accuracy of dimensions and angularity, reducing errors, and allowing for cost-effective and rapid determination of panel specifications.
Implementation Method 1
The detection units (26a, 26b, 26c) detect the presence of a material plate (12) in the corresponding detection zones (32a, 32b, 32c)
Data Source
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AI summary
A measuring device (16) and a method for measuring material sheets (12) as well as a system for cutting an endless sheet strand to length are described. The measuring device (10) comprises a conveying device (18) with which material sheets (12) can be guided through the measuring device (16) on a conveying path (24) in a conveying direction (22), at least two detection units (26a, 26b, 26c) whose respective detection areas (32a, 32b, 32c) are arranged at intervals from each other in the conveying path (24) of the material sheets (12), and at least one evaluation device (34).The at least two detection units (26a, 26b, 26c) are configured such that they can generate a respective detection signal in the form of an entry signal when the at least one material plate (12) enters the respective detection area (32a, 32b, 32c) and/or a respective detection signal in the form of an exit signal when the at least one material plate (12) exits the respective detection area (32a, 32b, 32c). The at least one evaluation unit (34) is configured such that it can determine at least one time interval between at least two detection signals. From at least one time interval between at least two detection signals and at least one other predetermined, predefinable and/or measurable quantity, at least one dimension, in particular a length (L), and/or an orientation and/or an angularity of the at least one material plate (12) can be determined.