Sacrificial Layer for Additive Manufacturing Substrate Separation
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Solution Overview
Problem
Traditional additive manufacturing methods are time-consuming and labor-intensive for separating components from substrates, often requiring mechanical separation and subsequent cleaning, which can damage the component or substrate and waste forming material.
Innovation Solution
A system and method utilizing a sacrificial layer on a substrate to secure and then remove the object, allowing non-mechanical separation and reuse of the substrate, with the sacrificial layer being etched away using an etching device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If mechanical separation methods (cutting, sawing, snapping) are used to separate components from substrate, then the component can be separated from the substrate, but the separation process is time consuming and labor intensive
Solution Approach 1:
The patent extracts the sacrificial layer from between the component and substrate, allowing the component to be released without mechanical separation. The sacrificial layer is removed through chemical etching or dissolution, enabling automatic separation that eliminates time-consuming manual cutting or snapping operations.
Solution Approach 2:
The sacrificial layer serves as an intermediary material between the component and substrate. It provides temporary bonding during manufacturing but can be selectively removed through chemical processes, enabling non-mechanical separation that is both rapid and automation-friendly.
2Manufacturing precision
If foundation segments are built into the base of the component to maintain dimensions after separation, then the component dimensions remain accurate, but forming material is consumed that could be used for additional components
Solution Approach 1:
The patent removes the foundation segment from the component design and relocates it as a sacrificial layer on the substrate. This extraction eliminates the need for extra forming material in the component while maintaining dimensional accuracy through the sacrificial layer's support during printing.
Solution Approach 2:
The sacrificial layer is designed as a disposable, consumable material that is cheap and easily replaceable. It performs its support function temporarily during manufacturing, then is removed through chemical etching, allowing the substrate to be reused without costly foundation segment removal or component rework.
3Productivity
If traditional mechanical separation methods are used, then the component can be separated from the substrate, but the component and/or substrate may be damaged
Solution Approach 1:
The patent replaces mechanical separation systems (cutting tools, saws, snap-fit mechanisms) with a chemical separation system. The sacrificial layer is dissolved or etched away through chemical processes, eliminating mechanical contact that could damage the component or substrate while enabling efficient separation.
4Productivity
If traditional cleaning methods (ablating and grinding) are used to remove remaining material from the substrate, then the substrate can be reused, but the process is labor intensive, time consuming, and expensive
Solution Approach 1:
The patent replaces mechanical cleaning methods (ablation, grinding) with chemical cleaning. The sacrificial layer is designed to be selectively dissolved or etched away through chemical processes, automatically removing all residual material from the substrate without manual intervention, significantly reducing cleaning time and cost.
Solution Approach 2:
The sacrificial layer is designed to self-remove through chemical etching or dissolution processes. The chemical agent automatically penetrates and dissolves the sacrificial material, eliminating the need for manual cleaning operations and enabling automatic substrate preparation for reuse.
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 reduces the need for mechanical separation and substrate cleaning, saving time and resources, and allows for more efficient use of forming material by eliminating the need for foundation segments, thereby lowering costs and improving manufacturing efficiency.
Implementation Method 1
removing at least some of the sacrificial layer from the substrate so that the object is no longer secured to the base layer
Data Source
AI summary
A method for additively manufacturing an object is provided. The method includes forming the object on a sacrificial layer of a substrate such that the object is secured to a base layer of the substrate via the sacrificial layer. The method further includes removing at least some of the sacrificial layer from the substrate so that the object is no longer secured to the base layer.