Vibratory Extraction Platform for 3D Printed Object Removal

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Solution Overview

Problem

Current 3D printing processes require significant human intervention and time to extract objects from powdered build cakes, as the cakes can be loosely or partially fused, necessitating manual breaking and cleaning, which is labor-intensive and costly.

Innovation Solution

A vibratory extraction platform that vibrates the powder build cake to create stress points, fracturing it and allowing the powdered material to sift through openings, optionally assisted by an impulse mechanism to crack the cake, significantly reducing extraction time and effort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual breaking and cleaning of powder build cakes is used, then extraction completeness is improved, but labor intensity and time consumption increase significantly

Engineering Contradiction:
Improveextraction completenessVSAvoidextraction speed
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The patent applies mechanical vibration through a vibratory table or device to automatically fracture and separate the build cake into smaller pieces, enabling the 3D object to be extracted without manual breaking. The vibration creates stress points in the powder build cake, causing it to fracture and allowing automated removal, thus improving productivity while maintaining extraction completeness.

Inventive Principle:
Principle #18Mechanical vibration

2Reliability

If the build cake is firmly fused, then object stability during printing is improved, but extraction difficulty increases

Engineering Contradiction:
Improveobject stabilityVSAvoidextraction ease
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The vibratory extraction platform uses mechanical vibration to create stress points within the firmly fused build cake, causing it to fracture and separate. This allows even tightly bound powder cakes to be broken down and processed automatically, making extraction easier while maintaining the firm fusion needed for stable printing.

Inventive Principle:
Principle #18Mechanical vibration

3Manufacturing precision

If more time is spent on cooling and extraction, then object quality is improved, but production cycle time increases

Engineering Contradiction:
Improveobject qualityVSAvoidproduction cycle time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The automated vibratory extraction system accelerates the cooling and extraction process by mechanically fracturing the build cake and facilitating rapid heat dissipation. This reduces the time required for cooling while maintaining object quality, thereby shortening the overall production cycle time.

Inventive Principle:
Principle #18Mechanical vibration

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

Automates the extraction process, speeding up the cooling and removal of 3D objects from the cake, reducing labor and time, and enabling faster production cycles.

Implementation Method 1

vibrating the extraction platform to break apart the build material and sift it through openings in the extraction platform

Methodology Applied
Scientific EffectVibration: Vibration

Implementation Method 2

an impulse mechanism to crack the cake

Methodology Applied
Scientific EffectImpact force: Impact Force

Data Source

PatentEP3558642B1Extracting 3D objects
Publication Date: 2022.08.24 HEWLETT PACKARD DEVELOPMENT COMPANY LP
  • EP3558642B1 patent drawingFigure 1~4
  • EP3558642B1 patent drawingFigure 5

AI summary

In an example implementation, a method of extracting three-dimensional (3D) objects includes forming on a vibratory extraction platform, a build cake comprising a fused 3D object encased within build material and vibrating the extraction platform to break apart the build material and sift it through openings in the extraction platform.