3D Printer Platform Maintaining Constant Nozzle Distance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional 3-D printing technologies face challenges in maintaining a constant distance between the nozzle and the platform, leading to issues such as manual leveling adjustments, platform drift, and clogs due to exposure of filament, which complicates the printing process and can result in errors and frustration, especially for hobbyists and non-engineers.
Innovation Solution
A 3-D printer configuration with a movable stage and platform that maintains a constant distance relative to the nozzle through defined motion vectors passing through a central point of origin, eliminating the need for manual leveling and reducing exposure of the filament, thus preventing clogs and simplifying the printing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual leveling adjustments are used to maintain constant nozzle-to-platform distance, then the initial setup can achieve proper distance, but the platform drifts during operation requiring frequent re-adjustment
Solution Approach 1:
The system uses sensors to automatically detect platform position and control motorized actuators to maintain constant nozzle-to-platform distance without user intervention. The platform or nozzle self-adjusts during operation to compensate for drift, eliminating manual leveling requirements.
Solution Approach 2:
Sensors continuously monitor the actual nozzle-to-platform distance and feed this information back to a controller, which adjusts motorized actuators in real-time to maintain the target distance. This closed-loop control prevents drift and eliminates the need for manual re-adjustment during long print operations.
2Ease of manufacture
If the filament is exposed outside the nozzle during printing, then the extrusion process can be simplified, but clogs occur due to filament exposure to environment
Solution Approach 1:
A flexible filament guide tube or sheath extends from the nozzle to contain and protect the filament as it travels from the spool to the extrusion point. This protective enclosure prevents environmental contamination while allowing the filament to be fed continuously, maintaining both simplicity and reliability.
Solution Approach 2:
An intermediate protective channel or conduit is introduced between the filament spool and the nozzle extrusion point. This intermediary structure shields the filament from environmental factors causing clogs while maintaining the continuous feed mechanism needed for simple extrusion processing.
3Stability of the object's composition
If motorized tilt adjustments are used to maintain platform levelness, then the platform can be kept level during printing, but the device complexity increases
Solution Approach 1:
The motorized actuator system serves multiple functions: it maintains platform levelness, compensates for thermal expansion, adjusts for material shrinkage, and ensures consistent nozzle-to-platform distance. This multi-functionality reduces the need for separate adjustment mechanisms, managing complexity while enhancing stability.
Solution Approach 2:
The platform leveling mechanism is merged with the nozzle positioning system, combining tilt adjustment and height control into an integrated motorized actuator assembly. This consolidation reduces the number of separate components and control systems, managing overall device complexity while maintaining platform stability.
4Manufacturing precision
If precise platform scan with sensors is performed to create software map of leveling errors, then the printing errors can be compensated, but the calibration process becomes complex and time-consuming
Solution Approach 1:
A quick preliminary leveling procedure is performed before printing, establishing baseline sensor readings and making minor adjustments to bring the platform within acceptable tolerance. This preliminary action prepares the system for automated real-time compensation during printing, reducing both calibration time and complexity compared to full pre-print mapping.
Solution Approach 2:
Sensors continuously monitor platform position and nozzle-to-platform distance during printing, with the control system automatically compensating for deviations in real-time. This ongoing feedback replaces the need for extensive pre-print calibration and software mapping, reducing calibration time while maintaining manufacturing precision throughout the print operation.
Data Source
AI summary
An apparatus, method, system for 3-D printing that includes a nozzle and a movable platform, wherein the platform provides for a constant distance configuration of the platform relative to the extrusion emitter or nozzle thereby precluding the need to level the printer. The apparatus includes motion vectors associated with each direction of motion of the movable platform. A central point of origin is further provided for establishing the directions of movement of the movable cantilevered platform. The direction of motion of the motion vectors each pass through the central point of origin thereby providing a movable platform that stays a constant distance relative to the nozzle when moved in any planar direction within each layer.