Homogeneous Material Mixing Device for 3D Printing
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Solution Overview
Problem
Existing material extrusion printers face challenges in achieving homogeneous mixing of multiple materials, particularly in 3D printing, where generating a boundary between materials is necessary for multi-material parts, and existing cyclone separators are not efficient in regulating gas flow rates to maintain consistent material proportions.
Innovation Solution
A homogeneous material mixing device comprising two cyclone connecting pipes and regulation means to ensure a constant total inflow rate of gas and particles, allowing for in-situ adjustment of air percentages and material proportions, utilizing solenoid valves and Venturi tubes for precise control of gas flow rates and particle introduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a cyclone separator is used to separate particles from gas in material extrusion printing, then particle separation is achieved, but the gas flow rate cannot be regulated to maintain consistent material proportions
Solution Approach 1:
The patent implements feedback control by using flow meters to measure gas flow rates and solenoid valves to automatically adjust the gas flow, ensuring consistent material proportions are maintained in the cyclone separator system
Solution Approach 2:
The patent replaces manual mechanical flow regulation with automated electronic control systems, including solenoid valves and flow meters, to precisely regulate gas flow rates and maintain material proportion consistency
2Adaptability or versatility
If multiple materials are used in 3D printing to create multi-material parts, then functional versatility is improved, but generating boundaries between materials creates complexity
Solution Approach 1:
The patent uses homogeneous mixing of materials in powder form within the cyclone separator system, allowing multiple materials to be combined and deposited without requiring complex boundary generation mechanisms, thereby maintaining versatility while reducing device complexity
3Adaptability or versatility
If material proportions are adjusted in multi-material printing, then tailored material characteristics are achieved, but maintaining constant total inflow rate becomes difficult
Solution Approach 1:
The patent employs feedback control through flow meters and solenoid valves that continuously monitor and adjust individual gas flow rates to material inputs, ensuring that total inflow rate remains constant even when material proportions are varied
Solution Approach 2:
The patent implements dynamic control where solenoid valves automatically adjust gas flow rates in real-time based on material proportion requirements, allowing flexible material composition changes while maintaining reliable constant total inflow through automated regulation
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
Enables the production of parts with variable or static material proportions by ensuring homogeneous mixing and consistent deposition of materials, allowing for the creation of functional parts with tailored physicochemical and mechanical characteristics.
Implementation Method 1
a vortex is generated, projecting the particles towards the wall of the cyclone due to centrifugal force
Implementation Method 2
the cyclone being configured to separate the gas from the particles of the first material
Implementation Method 3
utilizing solenoid valves and Venturi tubes for precise control of gas flow rates and particle introduction
Data Source
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AI summary
Homogeneous material mixing device adapted for an extrusion printer comprising a cyclone (10), a pipe (21) which transports to the cyclone (10) gas or the mixture of gas with particles of the first material, at least a second pipe (22) which transports gas or a mixture of the gas with particles of a second material to the cyclone (10), and regulation means (4) configured to continuously regulate the gas flow rate circulating through both pipes (21,22) ensuring a constant total inflow rate in the cyclone (10) through each pipe (21,22) with a predefined amount of particles of the corresponding material, the mixing of both materials and the separation of the gas from the mixture, or the separation of the gas from the first material or second material being carried out in the cyclone (10). Operating method for the device.