3D Printing Composite Strand Heating via Segmented Light Beams
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Solution Overview
Problem
Current additive manufacturing techniques face limitations in efficiently generating three-dimensional objects with precise control over material heating and compaction, particularly for composite materials, which affects the mechanical and thermal properties of the final product.
Innovation Solution
A method and system utilizing a light source to direct multiple light beams onto a strand material, which is then compacted using rollers and sensors to control heating and compaction, allowing for precise shaping and bonding of the material without melting, thereby enhancing the mechanical and thermal properties of the three-dimensional object.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional additive manufacturing techniques are used to deposit successive layers of material, then three-dimensional objects can be generated, but precise control over material heating and compaction is limited, affecting mechanical and thermal properties
Solution Approach 1:
The heating system is segmented into multiple independent light beams (first light beam and second light beam) that can be controlled separately. Each beam targets specific locations along the strand material, allowing precise localized heating control without requiring a complex monolithic heating system.
Solution Approach 2:
The light source system serves multiple functions: it provides both heating (through light absorption) and positioning control (through directed beams). The same optical system that directs the beams also enables precise spatial control of the heating zones, reducing overall system complexity.
2Manufacturing precision
If multiple light beams are used to heat strand material at one or more locations, then precise control over heating is achieved, but device complexity increases
Solution Approach 1:
Multiple light beams are merged into a single optical system originating from one light source. This unified approach allows simultaneous control of multiple heating zones while maintaining system simplicity, as all beams share common optical components and control mechanisms.
Solution Approach 2:
The patent introduces an optical system as an intermediary between the light source and the strand material. This intermediary enables precise beam direction and positioning without requiring complex mechanical actuators or multiple independent light sources, simplifying the overall control architecture.
3Reliability
If strand material is compacted using rollers with sensor control, then adhesion between layers is enhanced and void spaces are reduced, but device complexity increases
Solution Approach 1:
Sensors are integrated into the compaction system to provide real-time feedback on strand material positioning and compaction status. This feedback enables dynamic adjustment of roller pressure and positioning, ensuring consistent layer adhesion and void elimination while maintaining automated control without excessive complexity.
4Manufacturing precision
If light beams heat material without melting, then mechanical and thermal properties are improved, but energy efficiency may be reduced
Solution Approach 1:
The light beams apply heating locally at specific zones along the strand material rather than uniformly heating the entire material. This localized approach concentrates energy where needed (at the compaction points) to achieve the desired thermal effects without wasting energy on unnecessary heating, improving overall energy efficiency.
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
This approach enables the creation of three-dimensional objects with improved mechanical and thermal properties by precisely controlling the heating and compaction of composite materials, reducing void spaces and porosity, and enhancing adhesion between layers.
Implementation Method 1
using at least a first light beam and a second light beam from a light source to subject the at least one strand material to heating at one or more locations along the at least one strand material
Data Source
AI summary
The present disclosure provides methods for generating a three-dimensional object, comprising directing at least one strand material from a source of at least one strand material towards a base. Next, at least a first light beam and a second light beam from a light source is used to subject at least one strand material to heating at one or more locations along at least one strand material. At least a portion of the three-dimensional object may be generated from at least one strand material upon subjecting at least one strand material to heating along one or more locations.