3D Printer Nozzle Adjustment Mechanism for Scraping Prevention
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Solution Overview
Problem
Conventional three-dimensional printers with multiple nozzles face issues of material accumulation, surface roughness, decreased quality, and efficiency due to idling nozzles scraping against the printed object, leading to waste and reduced precision.
Innovation Solution
A nozzle adjustment device comprising a first guiding block, a second guiding block, and a moving block with inclined surfaces, allowing the nozzle on the moving block to adjust its position to avoid interference with the printed object, ensuring the working nozzle does not need to be lifted during printing, thus preventing scraping and optimizing nozzle alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple nozzles are fixed on the same reference plane to achieve faster printing speed, then productivity is improved, but manufacturing precision deteriorates due to nozzle scraping against the printed object
Solution Approach 1:
The patent makes the nozzle assembly dynamically adjustable in height through a moving block mechanism with inclined surfaces. The working nozzle can be lowered to the reference plane for printing, while idle nozzles remain elevated, preventing scraping. This dynamic positioning resolves the contradiction by allowing multiple nozzles to be present while maintaining precision during active printing.
Solution Approach 2:
The patent introduces vertical dimension adjustment to the traditionally horizontal nozzle arrangement. By adding height variation along the Z-axis, the system allows multiple nozzles to coexist at different elevations, enabling the working nozzle to reach the reference plane while idle nozzles stay elevated, thus preventing scraping and maintaining surface quality.
2Device complexity
If multiple nozzles are positioned at the same elevation, then device complexity is reduced, but loss of substance increases due to material accumulation from nozzle scraping
Solution Approach 1:
The moving block mechanism with inclined guiding surfaces enables dynamic height adjustment of the nozzle assembly. During printing, the working nozzle is positioned at the reference plane while idle nozzles are elevated, preventing material accumulation. This dynamic configuration reduces material waste without significantly increasing device complexity.
3Manufacturing precision
If the working nozzle is lifted to avoid scraping, then manufacturing precision is improved, but loss of time increases due to lifting and lowering operations
Solution Approach 1:
The inclined guiding surfaces are pre-configured to automatically guide the moving block into the correct position. When the drive mechanism moves the block along the inclined surfaces, the geometry automatically positions the working nozzle at the reference plane and elevates idle nozzles, eliminating the need for complex real-time adjustments during printing and reducing time loss.
4Device complexity
If multiple nozzles are synchronously moved with one working nozzle, then device complexity is reduced, but productivity decreases due to scraping causing rework and material waste
Solution Approach 1:
The patent implements dynamic height differentiation among nozzles while maintaining synchronous horizontal movement. The working nozzle is positioned at the reference plane for active printing, while idle nozzles are elevated to avoid scraping. This dynamic configuration prevents material accumulation and surface defects, eliminating rework and improving effective printing efficiency without significantly complicating the control system.
Data Source
AI summary
A nozzle adjustment device for a three-dimensional forming equipment assembly includes a first guiding block, a second guiding block, and a moving block. The first guiding block has a first inclined surface and a first bottom surface which is parallel to a printing platform. The first inclined surface and the first bottom surface form an acute angle therebetween. The second guiding block has a second inclined surface. The moving block is located between the first guiding block and the second guiding block. The moving block has a third inclined surface, a fourth inclined surface, and a second bottom surface. The second bottom surface is parallel to the printing platform, and has a nozzle disposed thereon.