3D Printer Build Material Recycling Device
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Solution Overview
Problem
3D printers often waste build material during the creation of 3D objects, with incidental and non-solidified material needing to be recovered and reconditioned for reuse, but existing methods are inefficient in recycling and reconditioning this material for subsequent use.
Innovation Solution
A build material recycling device with an upper chamber, classifier, and lower chamber, utilizing an impingement plate, filter, and fluidizing membrane to separate and recondition build material, allowing for efficient recycling and reuse in future printing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If build material is recycled and reconditioned for reuse, then material utilization efficiency is improved, but the complexity of the recycling device increases
Solution Approach 1:
The recycling device is segmented into three distinct chambers (upper chamber for separation, classifier chamber for sizing, lower chamber for reconditioning), allowing each component to perform a specific function efficiently. This modular segmentation enables comprehensive material recovery while maintaining manageable device complexity through functional specialization.
Solution Approach 2:
A classifier mechanism acts as an intermediary between the separation chamber and reconditioning chamber, selectively sorting recycled material by size. This intermediary component ensures that only appropriately sized material proceeds to reconditioning, improving overall material utilization efficiency while keeping the device architecture organized and manageable.
2Loss of substance
If incidental and non-solidified build material is recovered and reconditioned, then material loss is reduced, but the time required for recycling processes increases
Solution Approach 1:
The recycling device enables continuous operation where build material is continuously separated, classified, and reconditioned through the three chambers in sequence. This continuous process minimizes idle time and ensures that material recovery occurs without interruption, reducing both material loss and overall recycling time compared to batch processing methods.
Solution Approach 2:
The classifier performs preliminary sizing and sorting of recycled material before it enters the reconditioning chamber. This preliminary action ensures that material is properly prepared for reuse, preventing defects in subsequent printing processes and reducing the need for rework, thereby minimizing both material loss and time loss.
3Manufacturing precision
If build material is separated and classified through multiple chambers, then manufacturing precision of recycled material is improved, but the device complexity increases
Solution Approach 1:
The device is divided into three specialized chambers, each performing a specific function: separation, classification, and reconditioning. This segmentation allows each chamber to be optimized for its specific task, ensuring high manufacturing precision of the recycled material while keeping the overall device complexity manageable through functional modularity.
Solution Approach 2:
Each chamber is designed with local quality characteristics tailored to its specific function - the upper chamber has separation-optimized structures, the classifier chamber has sizing mechanisms, and the lower chamber has reconditioning features. This local optimization ensures high material quality without requiring the entire device to be overly complex.
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 device effectively recycles and reconditions build material, enabling its reuse in ongoing or future 3D printing processes with higher efficiency compared to traditional methods, optimizing space and material utilization.
Implementation Method 1
The impingement plate can slow a flow rate of the gas and build material mixture below a threshold flow rate to separate the build material from the gas and build material mixture
Implementation Method 2
The filter can separate the build material from the gas and build material mixture by filtering the gas and build material mixture
Implementation Method 3
The classifier can sift the separated build material with a mesh screen
Implementation Method 4
The fluidizing membrane can recondition the classified build material
Data Source
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AI summary
In some examples, a build material recycling device of a three-dimensional (3D) printer can include an upper chamber including an inlet and a material separator coupled to the inlet, a classifier coupled to the upper chamber, and a lower chamber coupled to the classifier, where the classifier is located between the upper chamber and the lower chamber.