Modular Extrusion Tip Cleaning Assembly for Rapid Maintenance
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Solution Overview
Problem
Current cleaning assemblies for extrusion heads in extrusion-based layered manufacturing systems require precise calibration and are time-consuming to maintain, leading to delays and increased service costs when components need replacement.
Innovation Solution
A tip cleaning assembly with a support component, purge ledge assembly, set block, and contact head that engages the extrusion tip, allowing for a two-step cleaning process of purging and wiping, and enabling easy replacement of damaged parts without recalibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current cleaning assemblies are used with precise calibration requirements, then cleaning effectiveness is improved, but installation time and operational complexity increase
Solution Approach 1:
The cleaning assembly is divided into separate modular components: a cleaning assembly body, removable contact heads, and calibration adjustment mechanisms. This segmentation allows the contact heads to be replaced independently without requiring recalibration of the entire assembly, reducing installation time while maintaining cleaning effectiveness through precise positioning of individual components.
Solution Approach 2:
The cleaning assembly incorporates adjustable and interchangeable components that can be dynamically reconfigured. The contact heads are designed to be removable and replaceable, with adjustment mechanisms that allow for quick repositioning. This dynamic design enables the system to adapt to different cleaning needs and extends component life, reducing the frequency of complete assembly replacements.
2Measurement precision
If precise calibration is performed during installation, then alignment accuracy is improved, but skill requirements and operational complexity increase
Solution Approach 1:
The cleaning assembly incorporates self-aligning features and built-in calibration references that enable the system to automatically position components correctly during installation. The contact heads include integrated alignment marks and adjustment mechanisms that allow operators to quickly achieve proper alignment without requiring complex calibration procedures or specialized skills, thereby simplifying operation while maintaining precision.
3Reliability
If damaged components require recalibration before replacement, then cleaning performance is maintained, but system downtime increases
Solution Approach 1:
The cleaning assembly is segmented into modular contact heads that can be independently replaced without affecting the calibration of other components. When a contact head is damaged or worn, it can be quickly removed and replaced with a new one while maintaining the same calibrated position, eliminating the need for recalibration and minimizing system downtime.
Solution Approach 2:
The contact heads are pre-calibrated during manufacturing with precise positioning and alignment built into the components themselves. This preliminary calibration ensures that when contact heads are installed or replaced, they are ready for immediate use without requiring on-site recalibration, thereby reducing maintenance time and improving productivity.
Data Source
AI summary
A tip cleaning assembly for use with an extrusion head of an extrusion-based layered deposition system, the tip cleaning assembly comprising a support component, a purge ledge assembly mounted on the support component, at least one set block mounted on the support component adjacent the purge ledge assembly, and at least one contact head removably mounted on the first set block, where the at least one contact head is configured to engage at least one extrusion tip of the extrusion head.