3D Printed Conductive Pathways via Multi-Extruder Additive Manufacturing
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Solution Overview
Problem
Existing methods for producing three-dimensional parts with conductive and non-conductive portions are limited in creating complex shapes and require multiple steps, failing to enable single-step production of three-dimensional conductive pathways.
Innovation Solution
A process using a rapid prototype extrusion machine or additive manufacturing that selectively extrudes conductive materials within desired regions of a part, employing conductive metals, carbon-based materials, or conductive polymers, and applying these through multiple deposition methods like stereo lithography or ink-jet printing to form integrated conductive pathways within non-conductive substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional extrusion methods are used to produce conductive pathways, then simple linear conductive shapes can be produced, but complex three-dimensional conductive shapes cannot be produced
Solution Approach 1:
The patent divides the extrusion process into multiple independent extruder heads, each capable of depositing different materials (conductive and non-conductive) separately. This segmentation allows each extruder to specialize in specific material deposition while the coordinated system produces complex three-dimensional conductive pathways that would be impossible with a single linear extrusion method.
2Productivity
If multiple production steps are used to create three-dimensional parts with conductive portions, then conductive pathways can be formed, but production time increases and single-step production is not achieved
Solution Approach 1:
The patent merges multiple extrusion operations into a single coordinated process by integrating multiple extruder heads on one rapid prototyping machine. This allows conductive and non-conductive materials to be deposited simultaneously in their final three-dimensional configurations, achieving single-step production of parts with integrated conductive pathways without requiring separate assembly steps.
Solution Approach 2:
The rapid prototyping machine is designed with multi-functionality to perform both structural part fabrication and conductive pathway deposition through its multiple extruder heads. This universal system can switch between different materials and functions within a single production cycle, eliminating the need for specialized equipment for each production step.
3Ease of manufacture
If conductive and non-conductive materials are extruded separately, then material properties are maintained, but assembly complexity increases
Solution Approach 1:
The patent combines the deposition of conductive and non-conductive materials into a single coordinated extrusion process where both materials are deposited simultaneously or sequentially in their final positions. This merging eliminates post-production assembly operations while maintaining material integrity through controlled deposition parameters and material formulation suitable for additive manufacturing.
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 rapid, single-step production of three-dimensional parts with defined conductive and non-conductive regions, enhancing functionality and complicating reverse engineering by using materials with similar densities and colors, thus making the parts more resistant to reverse engineering techniques.
Implementation Method 1
A process using a rapid prototype extrusion machine or additive manufacturing that selectively extrudes conductive materials within desired regions of a part
Data Source
AI summary
A process of producing electrically conductive pathways within additively manufactured parts and similar parts made by plastic extrusion nozzles. The process allows for a three-dimensional part having both conductive and non-conductive portions and allows for such parts to be manufactured in a single production step.