3D Printer Head Curvature-Adaptive Nozzle Control
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Solution Overview
Problem
Conventional printers are limited to two-dimensional printing on flat surfaces and cannot effectively print on three-dimensional surfaces such as cylindrical or spherical surfaces, which is a growing need.
Innovation Solution
A three-dimensional printer with a printer head equipped with multiple ejection nozzles that can be controlled to adjust ink ejection based on the surface curvature, allowing for precise ink placement and movement relative to the print substrate, enabling printing on complex surfaces by controlling the number and speed of nozzles according to the surface curvature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional printers are used for two-dimensional printing on flat surfaces, then printing simplicity is maintained, but the ability to print on three-dimensional surfaces is lost
Solution Approach 1:
The patent implements dynamic control of the printer head's movement and orientation to adapt to varying surface curvatures. The printer head can dynamically adjust its position, angle, and movement speed to follow the contours of three-dimensional surfaces, transforming a static printing system into a dynamic one that responds to surface geometry changes in real-time
Solution Approach 2:
The system changes key printing parameters including nozzle-to-surface distance, ejection speed, and ink amount based on the detected surface curvature. By dynamically adjusting these parameters according to the local surface geometry, the printer maintains optimal printing conditions across varying three-dimensional surfaces
2Manufacturing precision
If the printer head moves closer to the print substrate to improve print quality, then printing precision is improved, but the printable area is reduced
Solution Approach 1:
The printable area is divided into multiple zones based on surface curvature characteristics. Different regions of the three-dimensional surface are processed with appropriate nozzle subsets, allowing the system to maintain close printing distances for high precision in curved areas while covering larger flat regions with more nozzles activated
Solution Approach 2:
The system applies different printing strategies to different local regions of the print substrate. High-curvature areas receive focused attention from a subset of nozzles at optimal distances, while flat or low-curvature areas utilize the full nozzle array at larger distances, optimizing both precision and coverage locally
3Productivity
If multiple ejection nozzles are used to increase printing speed, then productivity is improved, but control difficulty increases
Solution Approach 1:
The plurality of ejection nozzles is divided into multiple groups or zones, with each group independently controllable. This segmentation allows the system to activate only the necessary nozzle groups for each surface region, reducing the effective control complexity while maintaining high productivity through parallel operation of multiple nozzles
Solution Approach 2:
Rather than controlling all nozzles at full capacity, the system selectively activates subsets of nozzles appropriate for each local surface region. This partial action approach reduces control complexity by limiting active nozzles to what is necessary for the current printing zone while maintaining overall productivity through systematic progression across the surface
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
Enables high-quality printing on three-dimensional surfaces by ensuring optimal ink placement and distribution, maintaining print quality even on non-flat surfaces by adjusting nozzle operation based on surface curvature.
Implementation Method 1
a printer head (85) provided with a plurality of ejection nozzles (85b) which are aligned in a plane
Data Source
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AI summary
It is an object to conduct intended printing on a surface of a print substrate having a three-dimensional surface. As a means to resolve the object, a three-dimensional printer comprises a base (1), a first supporting member (10) which is movable in the direction of an axis (X), a second supporting member (15) which is movable in the direction of an axis (Z), a third supporting member (20) which is rotatable about a first rotation axis (Y0), a holding chuck (26), for holding a print substrate (80), which is rotatable about a second rotation axis (X0), and a printer head (5) which is disposed above the print substrate (80) and is movable in the direction of the axis (Y). The movement and rotation of the first through third supporting member and the holding chuck and the movement of the printer head (5) are controlled by a movement controller, and the ejection of ink from the printer head (5) is controlled by a printing controller according to the control of the movement and the rotation by the movement controller. The printer head has a plurality of ejection nozzles which are aligned in a plane and the printing controller controls the ejection of ink from the plurality of ejection nozzles according to the surface curvature of a portion to be printed, to which said plurality of ejection nozzles face, of the surface of the print substrate.