3D Printing Coating Element Evasive Return Movement
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Solution Overview
Problem
Existing devices for producing three-dimensional objects by solidifying layers of construction material using radiation are hindered by long exposure pauses required during the coating process, which slow down the overall construction process.
Innovation Solution
The coating element performs an evasive movement upon returning to its starting position, ensuring it does not cross the scanner beam spatial area, allowing immediate exposure across the entire construction field, and can be moved with increased speed and in various configurations such as folding, pivoting, or lateral shifting to accelerate the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the coating element returns directly across the scanner beam spatial area to the starting position, then the return movement is short and fast, but the laser beam access is blocked and exposure must wait
Solution Approach 1:
The coating element performs an evasive movement by changing its spatial path from a direct linear return to a three-dimensional trajectory that goes above or around the scanner beam spatial area. This dimensional change allows the coating element to return to the starting position without blocking the laser beam, enabling simultaneous exposure and eliminating the exposure pause.
2Loss of time
If the coating element makes an evasive movement above the scanner beam spatial area, then the laser beam has uninterrupted access for immediate exposure, but the return path becomes longer and more complex
Solution Approach 1:
The coating element's movement system is made dynamic and adaptable, capable of switching between different movement modes (direct return when no exposure needed, evasive movement when exposure is required). The system dynamically adjusts the return path based on real-time exposure requirements, optimizing both speed and laser beam access without requiring permanently complex mechanisms.
3Productivity
If the coating element is moved with increased speed during evasive movement, then the return process is shortened, but precision of positioning may be compromised
Solution Approach 1:
The coating element movement follows a periodic pattern with distinct phases: high-speed evasive movement when blocking the laser beam, and precise controlled movement during actual coating application. The system alternates between these modes, using high speed only when necessary for the evasive return, while maintaining precision during the critical coating phases, thus achieving both productivity 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 significantly shortens the coating and exposure phases, enhancing the overall construction process efficiency by ensuring uninterrupted access for the laser beam and allowing for faster return and exposure of the entire construction field.
Implementation Method 1
melted by irradiation with a focused laser beam and solidifies after cooling to form the object
Implementation Method 2
melted by irradiation with a focused laser beam and solidifies after cooling
Implementation Method 3
construction material that can be solidified using radiation... melted by irradiation with a focused laser beam and solidifies after cooling
Data Source
AI summary
A device for producing three-dimensional objects by successively solidifying layers of a construction material that can be solidified using radiation on the positions corresponding to the respective cross-section of the object, with a housing comprising a process chamber, a construction container situated therein, an irradiation device for irradiating layers of the construction material on the positions corresponding to the respective cross-section of the object, an application device for applying the layers of the construction material onto a carrying device within the construction container or a previously formed layer, a metering device for delivering the construction material, wherein the application device comprises a coating element which distributes the construction material delivered by the metering device as a thin layer in an application area along a linear application movement, wherein at the end of a coating process for a layer when returning the coating element 11 to a coating starting position.