3D Build Material Separation for Contamination-Aware Reconditioning

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Solution Overview

Problem

Existing 3D printing technologies face inefficiencies in recycling untreated build material due to contamination from binder agent remnants, leading to reduced material quality and increased energy consumption in reconditioning processes.

Innovation Solution

A build material processing system that selectively separates and reconditions different portions of untreated build material using multiple removal devices and a reconditioning unit, allowing for tailored thermal treatments based on contamination levels, thereby enhancing recyclability and efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If all untreated build material is reconditioned uniformly, then material quality is maintained, but energy consumption increases and processing efficiency decreases

Engineering Contradiction:

Improvematerial qualityVSAvoidenergy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The build material processing system divides untreated build material into different portions based on contamination levels. A first portion with lower contamination is separated from a second portion with higher contamination, allowing each to receive tailored reconditioning treatment. This segmentation enables energy-efficient processing by applying intensive thermal treatment only to heavily contaminated material while using lighter processing for cleaner material.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system applies different reconditioning treatments to different portions of build material based on their specific contamination characteristics. The first portion receives a first reconditioning treatment while the second portion receives a second reconditioning treatment, optimizing energy usage by matching treatment intensity to actual material needs rather than applying uniform processing to all material.

Inventive Principle:

Principle #3Local quality

2Reliability

If all untreated build material undergoes intensive reconditioning, then material quality is maintained, but processing time increases

Engineering Contradiction:

Improvematerial qualityVSAvoidprocessing time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system segments build material into first and second portions based on contamination assessment, enabling parallel processing with different treatment intensities. This segmentation allows the system to avoid time-consuming intensive reconditioning of lightly contaminated material while maintaining quality standards through appropriate lighter treatment.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system applies partial reconditioning action to the first portion that is less contaminated, using a first reconditioning treatment that is less intensive than the second reconditioning treatment applied to the more contaminated second portion. This partial action approach maintains material quality while reducing overall processing time by avoiding excessive treatment of cleaner material.

Inventive Principle:

Principle #16Partial or excessive action

3Use of energy by moving object

If build material is separated into multiple portions for differential treatment, then energy efficiency improves, but device complexity increases

Engineering Contradiction:

Improveenergy efficiencyVSAvoidsystem complexity

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The build material processing system is designed to perform multiple functions: assessing contamination levels, separating material into different portions, and applying different reconditioning treatments. This multi-functionality allows a single integrated system to handle the entire workflow from assessment through differential reconditioning, managing complexity through functional integration rather than requiring separate dedicated equipment for each step.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 improves the throughput and efficiency of recycling untreated build material by distinguishing and treating contaminated portions differently, reducing energy consumption and maintaining material quality for subsequent print jobs.

Implementation Method 1

a reconditioning unit to treat the portions of the untreated build material. The build material removing device is to extract the first portion of the build material from the build bed in a first manner and extract the second portion of the build material from the build bed in a second manner

Methodology Applied

Scientific EffectThermal treatment: Heating

Implementation Method 2

Methodology Applied

Scientific EffectSelective separation:

Data Source

PatentUS20250236072A1Processing build materials

Publication Date: 2025.07.24 PERIDOT PRINT LLC

AI summary

A build material processing system is disclosed. The system comprising a build volume interface to receive a container including a build volume comprising a plurality of powdered build material layers in which an agent has been selectively applied to define a 3D object; and at least one type of build material removing device. The system further comprises a controller to control the build material removing device to extract a first portion of the build material layers in a first manner; control the build material removing device to subsequently extract a second portion of the build material layers in a second manner; and convey the extracted second portion of build material to a reconditioning unit.