Laser 3D Printer Powder Dispersion Control
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Solution Overview
Problem
Existing laser 3D printers face issues with the dispersion of residual powdered material during the recovery process, which requires manual suction by operating staff, exposing them to the material.
Innovation Solution
A laser 3D printer design incorporating a vibrating lifting platform and a recycling system that includes a dispensing and distribution unit with a rotating pipe and a distributor, allowing for controlled deposition and recirculation of powdered material without dispersion into the environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lifting platform is raised to recover the produced article, then the article can be accessed, but the residual powdered material disperses into the surrounding space
Solution Approach 1:
A removable cover is introduced as an intermediary element between the tubular compartment and the surrounding environment. The cover seals the compartment during operation to prevent powder dispersion, and can be removed after processing to access the produced article, thus mediating between containment and accessibility requirements
Solution Approach 2:
The residual powdered material that would normally be harmful when dispersed is instead captured and redirected through a chute into a collection container. The raising action that causes dispersion is converted into a beneficial process that channels material for recovery and recycling
2Loss of substance
If manual suction is used to recover residual powdered material, then material can be collected, but operating staff are exposed to the powdered material
Solution Approach 1:
The system performs its own material recovery function through an automated gravitational flow mechanism. The chute and collection container enable the printer to self-containedly manage residual material without requiring external manual intervention, thus eliminating staff exposure while maintaining recovery capability
Solution Approach 2:
A removable cover is introduced as an intermediary element between the tubular compartment and the surrounding environment. The cover seals the compartment during operation to prevent powder dispersion, and can be removed after processing to access the produced article, thus mediating between containment and accessibility requirements
3Manufacturing precision
If the distributor moves back and forth to deposit material, then uniform layers can be created, but the distribution process becomes more complex
Solution Approach 1:
The distributor transitions from a static component to a dynamic one with reciprocating motion capability. This allows the distributor to move back and forth across the platform, depositing material uniformly across the entire surface area while maintaining a relatively simple mechanical structure driven by basic actuation mechanisms
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 solution prevents the dispersion of residual powdered material into the environment, eliminating the need for manual recovery and ensuring a safer and more efficient recycling process.
Implementation Method 1
a laser printing head (4) for sintering the powdered material laid on the lifting platform (12)
Implementation Method 2
The platform (12) is connected to a known vibrating device (not illustrated) designed to impart on the platform (12) itself vibrations according to a given law
Data Source
Figure 1
Figure 2~3
Figure 4~7
AI summary
A laser 3D printer presents a tubular compartment (8); a lifting platform (12) engaged in a sliding manner in the tubular compartment (8); a feeding unit (19) for feeding a powdered material (3) onto the lifting platform (12); a laser printing head (4) for sintering the powdered material (3) laid on the lifting platform (12); and a collection chamber (13), which extends about at least part of the tubular compartment (8) and is connected to the tubular compartment (8) via at least one opening (16) made through a side wall (14) of the tubular compartment (8) itself.