Heatable Plate Pre-Heating for 3D Printing Build Material
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Solution Overview
Problem
Current 3D printing systems face inefficiencies in heating build materials, leading to prolonged warm-up times and the risk of hotspots, which can result in defects in manufactured objects.
Innovation Solution
A build material supply system that includes a heatable plate and pre-heating devices to efficiently heat the build material to a target temperature, reducing warm-up time and minimizing the risk of hotspots by using a combination of electrical resistors, magnetic induction, or air heating, and controlling the temperature through a controller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional heating methods are used for build material, then the build material can be heated, but the warm-up time is prolonged and hotspots may occur
Solution Approach 1:
The heating system is divided into multiple independent heating zones (first heating zone, second heating zone, third heating zone) that can be controlled separately. This segmentation allows simultaneous heating of different material portions, reducing total warm-up time while preventing hotspots through localized temperature control.
Solution Approach 2:
The build material is pre-heated in the feed tray before reaching the spreading mechanism. This preliminary heating action reduces the thermal mass that needs to be heated during active printing, significantly cutting down warm-up time while maintaining uniform temperature distribution.
2Temperature
If conventional heating methods are used for build material, then the build material can be heated, but hotspots occur causing defects
Solution Approach 1:
Each heating zone has independent temperature control capabilities, allowing different regions of the build material to be heated to different temperatures as needed. This local quality control prevents hotspots by ensuring uniform heat distribution and allows targeted heating of specific areas without overheating others.
Solution Approach 2:
Temperature sensors are positioned in each heating zone to provide real-time feedback on material temperature. The controller uses this feedback to dynamically adjust heating power, preventing temperature runaway and hotspots that would compromise object quality.
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 reduces warm-up time, minimizes the number of sacrificial layers, and lowers the risk of defects by ensuring consistent and efficient heating of the build material, improving the quality of 3D printed objects.
Implementation Method 1
heating to a target temperature the amount of build material that is removed from the build material feed tray to be spread to generate one layer
Implementation Method 2
electrical resistors
Implementation Method 3
magnetic induction
Implementation Method 4
air heating
Data Source
AI summary
According to one example there is provided a method for three-dimensional printing. The method comprises forming a pile of build material on a heatable plate adjacent a spreader, heating the pile of build material by contact with the heatable plate, and spreading the heated pile of build material on a support platform.