Bidirectional Coater System for 3D Printing Productivity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing 3D printing technologies face inefficiencies due to coaters that can only apply particle material in one direction, leading to empty runs and increased process time, which negatively impacts volume output per unit of time.
Innovation Solution
A coater system capable of applying particle material in two directions, allowing for parallel execution of coating and solidification processes, and featuring movable silos and coater blades with adjustable angles and gap settings to optimize material application without empty runs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a coater applies particle material in one direction only, then the coating process is simple to implement, but empty runs occur increasing process time and reducing productivity
Solution Approach 1:
The coater is divided into two independent coater blades (first coater blade and second coater blade) that can operate in opposite directions. Each blade has its own particle application opening, allowing simultaneous coating in both directions without empty runs, thus resolving the contradiction between simplicity and productivity.
Solution Approach 2:
The coating process transitions from unidirectional to bidirectional operation by adding a second coater blade oriented in the opposite direction. This dimensional expansion allows the system to eliminate empty runs by coating in both directions simultaneously, improving productivity while maintaining operational simplicity through symmetric design.
2Ease of operation
If the coater returns to starting position without coating, then the one-directional coating system can be maintained, but time is lost reducing the volume output per unit of time
Solution Approach 1:
The dual coater system enables continuous useful action by eliminating empty runs. While the first coater blade coats in one direction, the second coater blade simultaneously coats in the opposite direction, ensuring that the coater is always performing a useful function and never idle, thus reducing time loss while maintaining operational simplicity.
Solution Approach 2:
The second coater blade is pre-positioned and configured to coat in the opposite direction before the first blade completes its pass. This preliminary arrangement ensures that when the first blade returns, the second blade is already ready to coat, eliminating any idle time and maintaining continuous productive operation.
3Productivity
If parallelization of coating and solidification is implemented, then productivity increases, but the coater must be capable of two-directional operation increasing device complexity
Solution Approach 1:
The first and second coater blades are merged into a single integrated coater unit that operates bidirectionally. This merging allows parallelization of coating and solidification processes while avoiding the complexity of completely separate systems, as the dual-blade design shares common support structures and control mechanisms.
Solution Approach 2:
The coater unit achieves multi-functionality by incorporating two coater blades that can operate in opposite directions. This universal design allows the same coater structure to perform coating in both directions simultaneously, enabling parallelization without proportionally increasing device complexity, as the system serves multiple functions within a unified structure.
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 significantly reduces process time and increases volume output per unit of time by eliminating empty runs and enabling parallelization of coating and solidification steps, thereby enhancing the economic efficiency of 3D printing.
Implementation Method 1
The silo (27) and/or the particle application openings (1, 2) and coater blades (06) can be made to perform an oscillation
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a method and device for producing 3D shaped articles by means of the layering, wherein a recoater which can coat in both directions of travel is used.