Fiber-Reinforced 3D Printing With Laser-Melted Thermoplastic Layers
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Solution Overview
Problem
Existing three-dimensional printing methods are either costly, unreliable, or produce parts with inadequate material strength and resolution, particularly when combining thermoplastics and fiber reinforcements.
Innovation Solution
A three-dimensional printing system that uses fiber substrates coated with plastic powder, where a laser melts the powder into the substrate to create objects, followed by layering additional substrates and compressing them to enhance material properties, while utilizing a conveyor or carousel system for station transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If Fused Deposition Modeling (FDM) is used to print three-dimensional objects, then the process is inexpensive, but the printing speed is slow and resolution is low
Solution Approach 1:
The patent replaces the mechanical extrusion system of FDM with a laser-based melting system. A laser beam selectively melts thermoplastic powder onto fiber substrates, enabling faster printing speeds while maintaining cost-effectiveness. This substitution of mechanical deposition with optical heating resolves the contradiction between low cost and high printing speed.
2Ease of manufacture
If Fused Deposition Modeling (FDM) is used to print three-dimensional objects, then the process is inexpensive, but the material strength is weak
Solution Approach 1:
The patent creates composite materials by bonding thermoplastic powder to fiber substrates through laser melting. The resulting parts combine the strength of fiber reinforcements with the binding properties of melted thermoplastics, achieving superior material strength while maintaining cost-effectiveness. This composite approach resolves the contradiction between low cost and high material strength.
3Manufacturing precision
If stereolithography is used to print three-dimensional parts, then resolution is good, but material properties are limited by photosensitive materials
Solution Approach 1:
The patent changes the material parameter from photosensitive liquids to thermoplastic powders that can be melted and bonded to fiber substrates. This parameter change enables the use of strong thermoplastic materials (such as nylon, polyether ether ketone, and polyether polyols) while maintaining laser-based precision, thereby resolving the contradiction between good resolution and limited material properties.
4Adaptability or versatility
If inkjet printing is used to produce three-dimensional parts, then color and material variety are achieved, but material properties are insufficient for industrial applications
Solution Approach 1:
The patent replaces the inkjet printing mechanism with a laser melting system that directly fuses thermoplastic powder to fiber substrates. This substitution enables the use of industrially suitable thermoplastic materials with superior strength properties while maintaining the ability to produce colored parts through material selection, thereby resolving the contradiction between material variety and material properties.
5Strength
If composite-based additive manufacturing is used to produce parts with fiber reinforcements, then material strength is improved, but reliability is compromised due to inkjet unreliability
Solution Approach 1:
The patent replaces the unreliable inkjet deposition system with a laser-based melting system that provides more consistent and reliable printing. The laser can precisely control the melting of thermoplastic powder onto fiber substrates, ensuring reliable layer-by-layer construction while maintaining the strength benefits of fiber reinforcement, thereby resolving the contradiction between material strength and printing reliability.
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 achieves cost-effective, reliable, and high-resolution printing with improved material strength by integrating thermoplastics and fiber reinforcements, ensuring consistent part quality.
Implementation Method 1
a laser melts the powder into the substrate to create objects
Implementation Method 2
a laser melts the powder into the substrate to create objects
Data Source
AI summary
A method for creating three-dimensional object and a three-dimensional printing system (a) provide a substrate; (b) provide construction material to coat the substrate; (c) curie a portion of the construction material on the substrate to create an object on the substrate; (d) remove excess construction material from the substrate; (e) cut an outline around the object created on the substrate; (f) repeating (a)-(e) until a desired number of substrates with an object created thereon have been processed; (g) stack the processed substrates; and (h) finish the stacked processed substrates to bond the stacked processed substrates together.