Peripheral Surface Heating for Solid Polymer Additive Manufacturing
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Solution Overview
Problem
Traditional subtractive manufacturing methods are time-consuming, labor-intensive, and limit design iteration, hindering rapid prototyping and collaboration, while existing additive manufacturing techniques struggle to produce industrial-grade parts with uniform mechanical properties.
Innovation Solution
The method involves continuously receiving solid polymer material in the form of strands or particles, heating only the surface to liquefy it, and attaching it to a polymer substrate using specified heating parameters to maintain the central volume solid, achieving monolithic attachment and preventing deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional subtractive manufacturing methods are used, then material strength and uniform mechanical properties are maintained, but production time and labor intensity increase significantly
Solution Approach 1:
The patent applies parameter changes by controlling heating temperature and duration to selectively liquefy only the peripheral surface of polymer material while maintaining the central volume in solid state. This parameter control enables rapid additive manufacturing without compromising material strength, resolving the contradiction between production speed and manufacturing complexity.
Solution Approach 2:
The invention implements local quality by applying heat only to the peripheral surface region of the polymer material rather than uniformly heating the entire material. This localized heating approach allows rapid processing of the surface while preserving the structural integrity and mechanical properties of the central solid volume, thereby increasing productivity without sacrificing material quality.
2Ease of operation
If the entire polymer material is heated to liquefy it for additive manufacturing, then material flow and shaping capability improve, but material strength decreases and deformation occurs
Solution Approach 1:
The patent applies local quality by selectively heating only the peripheral surface of the polymer material to a liquefaction temperature while maintaining the central volume in solid state. This localized approach provides sufficient material flow and shaping capability at the surface for additive manufacturing, while the solid central core preserves material strength and prevents deformation.
Solution Approach 2:
The invention utilizes parameter changes by precisely controlling heating parameters (temperature, duration, spatial distribution) to achieve partial liquefaction. The peripheral surface is heated to melting point for shaping, while the central volume remains below melting temperature, maintaining structural integrity. This parameter control resolves the contradiction between shaping capability and material strength.
3Loss of time
If rapid design iteration is implemented, then time-to-market decreases, but design quality and verification accuracy may be compromised
Solution Approach 1:
The patent implements continuity of useful action through rapid sequential deposition of liquefied polymer material layers. The continuous additive manufacturing process enables fast design iteration by rapidly producing physical prototypes, while the controlled solidification process ensures each layer maintains dimensional accuracy and structural fidelity, allowing both speed and precision.
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 efficient production of industrial-grade parts with uniform mechanical characteristics, allowing for complex shapes and overhanging structures without additional supports, while maintaining material strength and properties, thus overcoming the limitations of traditional methods.
Implementation Method 1
heating a surface of the continuously received solid polymer material peripherally to liquefy the surface, using specified heating-related parameters which are selected to maintain a central volume of the continuously received solid polymer material in a solid state
Implementation Method 2
attaching the peripherally heated surface of the continuously received solid polymer material to the liquefied surface of the polymer substrate, wherein the attachment to the polymer substrate is achieved by a re-solidification of the liquefied surface to yield monolithic attachment
Data Source
AI summary
Systems and methods of additive manufacturing are provided, in which solid polymer material in form of strand(s) or particles is continuously received, and its surface is heated peripherally to liquefy the surface, using specified heating-related parameters which are selected to maintain a central volume of the continuously received solid polymer material in a solid state. The surface of a polymer substrate is also liquefied, and the peripherally heated surface of the continuously received solid polymer material is attached to the liquefied surface of the polymer substrate, followed by re-solidification of the liquefied surface to yield monolithic attachment of the material to the substrate. Liquefying only the surface of the material maintains some of its strength and prevents deformation upon solidification. The monolithic attachment provides uniform and controllable industrial products.