Multi-Material Additive Manufacturing of Embedded Circuitry
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Solution Overview
Problem
Current additive manufacturing techniques are limited in producing functional electromechanical devices with embedded 3-D circuitry and mechanical elements, as they struggle with integrating conductive and magnetic materials, maintaining structural integrity, and achieving automated, fully-automated fabrication of multi-material components.
Innovation Solution
A multi-material additive manufacturing process that extrudes thermoplastic materials alongside conductive and magnetic filaments, allowing for the simultaneous deposition of metal wires and polymer to create complex structures with embedded circuitry and sensors, using a system with a nozzle capable of moving along axes and a filament dispenser for embedding filaments into the extrudate, enabling the formation of actuators, sensors, and other electromechanical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional additive manufacturing techniques are used to produce functional electromechanical devices, then structural components can be fabricated, but integration of conductive and magnetic materials with embedded 3-D circuitry is limited
Solution Approach 1:
The patent combines multiple materials (thermoplastic, conductive, magnetic) and manufacturing functions into a single additive manufacturing process. The system integrates extrusion of thermoplastic material with simultaneous deposition of conductive and magnetic filaments, merging what were previously separate manufacturing steps into one unified process that produces structurally integrated electromechanical devices with embedded circuitry.
Solution Approach 2:
The patent employs composite materials by combining thermoplastic polymers with conductive fillers (such as metal particles or carbon) and magnetic particles. These composite filaments allow the additive manufacturing process to deposit materials that simultaneously provide structural support, electrical conductivity, and magnetic properties, enabling the fabrication of multi-functional components without requiring separate material deposition steps.
2Adaptability or versatility
If multi-material components are fabricated using conventional methods, then functional elements can be produced, but structural integrity and reliability are compromised
Solution Approach 1:
The patent merges the deposition of thermoplastic structural material with conductive and magnetic functional materials in a single continuous process. This simultaneous deposition ensures proper integration and bonding between different material types, maintaining structural integrity while incorporating functional elements. The thermoplastic matrix binds the conductive and magnetic filaments together, creating a unified structure rather than separate components.
3Ease of manufacture
If manual assembly processes are used for electromechanical devices, then component integration is achievable, but automation and productivity are reduced
Solution Approach 1:
The additive manufacturing system performs multiple manufacturing functions automatically through computer control. The system self-manages the coordination of multiple extrusion nozzles, temperature control, layer deposition, and integration of different materials without requiring manual intervention. This automation enables the device to manufacture itself layer by layer, significantly improving productivity while maintaining integration quality.
Solution Approach 2:
The additive manufacturing system is designed as a multi-functional platform that can deposit thermoplastic materials, conductive materials, and magnetic materials using the same basic extrusion mechanism. This universal approach eliminates the need for separate manufacturing processes for different material types, enabling automated fabrication of complex multi-material devices through a single integrated system.
4Adaptability or versatility
If complex structures with embedded circuitry are produced, then functional devices can be created, but manufacturing precision and alignment are difficult to achieve
Solution Approach 1:
The system uses computer-aided design (CAD) models to pre-plan the exact paths and positions for depositing conductive and magnetic materials within the thermoplastic structure. Before manufacturing begins, the software generates toolpaths that precisely coordinate the movement and deposition of different materials, ensuring proper alignment and positioning. This preliminary digital planning guarantees manufacturing precision for embedded circuitry and functional elements.
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 automated fabrication of multi-material, multi-functional components with embedded 3-D circuitry and sensors, reducing costs and increasing reliability by allowing for monolithic production of complex structures without assembly, suitable for robotics, medical devices, and consumer electronics.
Implementation Method 1
extruding thermoplastic materials
Implementation Method 2
extruding thermoplastic materials
Implementation Method 3
embedding filaments into the extrudate
Data Source
AI summary
The present invention includes a process, system and apparatus for multi-material additive manufacturing process comprising: extruding an extrudable material through a nozzle capable of moving along one or more axis and concurrently extruding one or more filaments, wherein the filament is embedded in, on or about the extrudable material from the nozzle.