Aluminum Scrap Sorting with Three-Stage Feed Singulation
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Solution Overview
Problem
Existing systems for sorting scrap aluminum using laser-induced plasma spectroscopy face inefficiencies due to inadequate singulation of material, leading to reduced throughput and compromised sorting quality when processing large quantities.
Innovation Solution
A three-stage feeding system with progressively increasing angles of inclination for each feeding unit, combined with adjustable inclinations and optimized detection and sorting mechanisms, ensures efficient singulation and enhanced throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single feeding unit is used to transport material, then the device complexity is low, but the singulation quality deteriorates leading to reduced throughput
Solution Approach 1:
The feeding system is divided into three separate feeding units (201, 202, 203) arranged in series, each with its own feeding surface and vibration mechanism. This segmentation allows each unit to perform a specific function in the singulation process, improving overall throughput while maintaining manageable complexity through modular design
Solution Approach 2:
Each feeding unit is equipped with adjustable vibration parameters and angle of inclination that can be dynamically optimized for different material types and throughput requirements. The vibration amplitude, frequency, and feeding surface angles can be adjusted to achieve optimal singulation quality for varying production demands
2Manufacturing precision
If feeding surfaces have the same angle of inclination, then the device complexity is low, but the singulation quality deteriorates
Solution Approach 1:
Each feeding unit has a locally optimized angle of inclination (α1, α2, α3) that differs from the others. The first feeding unit has a shallower angle for gentle initial transport, while subsequent units have progressively steeper angles to enhance singulation effectiveness, with each local configuration tailored to its specific function in the overall process
Solution Approach 2:
The angle of inclination is changed as a key parameter across different feeding units to optimize singulation. By varying this geometric parameter from one feeding unit to the next, the system achieves superior singulation quality without requiring complex mechanical mechanisms, simply through geometric progression of the feeding surfaces
3Productivity
If material is not properly singulated, then the throughput can be increased by processing larger quantities, but the sorting quality deteriorates
Solution Approach 1:
The three feeding units perform preliminary singulation actions before the material reaches the sorting station. By progressively separating and spacing out material pieces through vibration and gravitational forces in the inclined feeding surfaces, the system ensures that even large quantities of material are properly singulated, allowing high throughput without compromising sorting accuracy
Solution Approach 2:
The feeding units operate continuously to maintain a steady stream of singulated material. The continuous vibration and transport action across all three feeding units ensures that material is constantly being singulated and fed to the sorting station, maintaining both high throughput and consistent singulation quality without interruption or batch processing
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 achieves improved sorting efficiency by ensuring uniform distribution and singulation of materials, allowing for higher throughput while maintaining high sorting quality, even with increased material volumes.
Implementation Method 1
a laser device (140) that is designed to generate a plasma on a surface of the piece of material with a laser beam propagating along a beam axis
Implementation Method 2
generate a plasma on a surface of the piece of material with a laser beam
Implementation Method 3
laser-induced plasma spectroscopy, also referred to as LIBS (laser-induced breakdown spectroscopy)... Light emitted by the plasma is detected and spectrally analyzed to deduce the elemental composition of the piece of material
Implementation Method 4
the feeding surfaces are each inclined at a respective angle of inclination with respect to the horizontal... transport the piece of material along a feeding surface provided by the respective feeding unit
Implementation Method 5
transport the piece of material along a feeding surface provided by the respective feeding unit
Data Source
AI summary
The invention relates to a system for analysing and sorting a material part, in particular a scrap part made of aluminium, comprising: a feed means (110) for transporting the material part (120), a sorting unit (160) that is designed to feed the material part (120) to one of two fractions (F1, F2); a laser device (140) that is designed to generate a plasma (3) on a surface (7A) of the material part (120), with a laser beam (5) propagating along a beam axis (5A); a spectrometer system (1) that is designed to perform a spectral analysis of a plasma light (3A) emitted from the laser-induced plasma (3) and to generate an output signal in accordance with a result of the spectral analysis performed; and a control device (150), that is designed to receive the output signal and to operate the sorting unit (160) on the basis of the output signal and a sorting criterion; wherein the spectrometer system (1) has a spectrometer (13) and a detection unit (21) optically connected to the spectrometer (13); wherein the detection unit (21) has a lens (25A, 25B, 25C, 25D) to which a detection cone (35) is assigned, which forms a plasma detection region (39) in an overlap region (37) with the laser beam (5); wherein the feed means (110) has three individual feed assemblies (201, 202, 203) arranged in series one after another in the transport direction (207) of the material part (120); wherein each feed assembly (201, 202, 203) is designed to transport the material part (120) along a feed surface (204, 205, 206) provided by the respective feed assembly (201, 202, 203), wherein the feed surfaces (204, 205, 206) are each inclined with respect to the horizontal to form a respective angle of inclination (α1, α2, α3); wherein the angles of inclination (α1, α2, α3) are formed differently; wherein the angle of inclination (α1) of the feed surface (204) of the first feed assembly (201) in the transport direction (207) is smaller than the angle of inclination (α2) of the feed surface (205) of the second feed assembly (202) in the transport direction (207); and wherein the angle of inclination (α2) of the feed surface (205) of the second feed assembly (202) in the transport direction (207) is smaller than the angle of inclination (α3) of the feed surface (206) of the third feed assembly (203) in the transport direction (207).