Rotating Reflective Cover for Uniform Additive Manufacturing Heating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional heating devices for additive manufacturing struggle to uniformly heat large surface areas, leading to temperature differences and non-uniform work-piece structures due to fixed heating source orientations and inefficient heat distribution.
Innovation Solution
A heating device with a reflective cover and rotating unit that modulates the heating direction of a heating source, allowing for a scanning heating process and the use of multiple heating modules to irradiate overlapping areas, ensuring uniform heating across larger surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heating base is used to heat the powder layer via heat conduction, then heating can be provided to the powder layer, but uniform heating of large surface areas becomes difficult as the powder layer thickness increases or work-piece size grows
Solution Approach 1:
A reflective cover is introduced as an intermediary component between the heating source and the powder layer. The reflective cover redirects and distributes heat radiation across the powder layer surface, enabling uniform heating of large areas without direct contact with the heating source.
Solution Approach 2:
The heating approach transitions from one-dimensional heat conduction through the heating base to three-dimensional heat radiation distribution using the reflective cover. This allows heat to reach different areas of the powder layer from multiple angles, ensuring uniform heating across large surfaces.
2Temperature
If a halogen lamp array is used to heat the powder layer via heat radiation, then heating can be provided to the surface, but the manufacturing chamber spatial configuration restricts installation positions, resulting in non-uniform heating
Solution Approach 1:
The reflective cover serves as a mediator that redistributes heat radiation from the heating source. It reflects and redirects heat to areas that would otherwise be difficult to reach, ensuring uniform temperature distribution across the entire powder layer surface despite spatial constraints.
Solution Approach 2:
The system employs a rotatable reflective cover that can dynamically adjust its orientation to modulate the heating direction. This dynamic adjustment allows the heating source to effectively cover different areas of the powder layer, achieving uniform heating across large surfaces.
3Temperature
If four or more heating sources are disposed on upper sides of side walls with fixed irradiation directions, then heating can be provided to the manufacturing platform, but heat distribution becomes non-uniform and requires a lot of time to achieve uniform temperature
Solution Approach 1:
The reflective cover is made rotatable to dynamically change the heating direction. This allows a single heating source to effectively cover multiple areas that would otherwise require multiple fixed heating sources, reducing the total number of heating sources needed and improving heating efficiency.
Solution Approach 2:
The rotatable reflective cover enables a single heating source to perform multiple functions by directing heat to different areas of the manufacturing chamber at different times, replacing the need for multiple fixed heating sources and achieving uniform temperature distribution more efficiently.
4Manufacturing precision
If multiple heating sources are used to achieve uniform heating, then heating uniformity improves, but the number of heating sources and energy consumption increase
Solution Approach 1:
The rotatable reflective cover allows a single heating source to dynamically redirect heat to different areas, achieving uniform heating distribution without requiring multiple heating sources. This reduces energy consumption while maintaining heating uniformity across the powder layer.
Solution Approach 2:
The heating process is segmented into multiple stages where the reflective cover rotates to direct heat to different areas sequentially. This time-based segmentation allows a single heating source to cover the entire surface area that would otherwise require multiple simultaneous heating sources, reducing overall energy consumption.
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 solution enables efficient and uniform heating of large areas, reducing the number of heating sources and energy consumption while maintaining uniformity, suitable for additive manufacturing and other industries requiring large-area heating.
Implementation Method 1
A reflective cover covering the heating source and formed in a curved shape, wherein an inner surface of the reflective cover is made of thermal radiation reflective material and faces towards the heating source
Data Source
AI summary
The present application provides not only a heating device for additive manufacturing but also a heating module and a manufacturing apparatus utilizing the heating device. The heating device utilizes a rotational reflective cover to modulate a heating direction of a heating source, which expands an area correspondingly irradiated by the heating source and enhances uniformity of heating. Besides, the heating modules can be coupled and controlled by a controlling subsystem so as to respectively irradiate different areas with ranges at least partially intersecting each other, which also improves heating uniformity for heating a large area.