Multi-Row Printing Assembly with Dynamic Actuation
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Solution Overview
Problem
Existing printing assemblies face challenges in scaling for commercial production, including improving throughput, resolution, and dynamic material adjustment during print cycles.
Innovation Solution
A printing assembly with multiple rows of print heads, where each row is spaced apart along the working axis, and actuators are used to move the print heads relative to each other and the support bracket, allowing for dynamic adjustment of material deposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single row of print heads is used, then the device complexity is low, but the manufacturing throughput is insufficient for commercial production
Solution Approach 1:
The printing system is divided into multiple independent print head rows, each capable of depositing material simultaneously. This segmentation allows parallel material deposition across multiple rows, significantly increasing manufacturing throughput while maintaining manageable complexity through modular architecture
Solution Approach 2:
The patent transitions from a single-row linear arrangement to a multi-row two-dimensional array of print heads. By adding the row dimension, the system achieves higher throughput through simultaneous multi-location deposition without proportionally increasing system complexity
2Adaptability or versatility
If material deposition is fixed, then the device complexity is low, but the adaptability for dynamic resolution adjustment is insufficient
Solution Approach 1:
The patent implements dynamic adjustability by enabling independent positioning of print heads relative to the build platform and to each other. This allows real-time modification of deposition patterns, resolution, and material distribution during active print cycles without requiring complex reconfiguration of the entire system
Solution Approach 2:
The print heads are designed with multi-functionality, capable of depositing different materials and adjusting deposition parameters dynamically. This universal design allows a single print head row to perform multiple functions (different materials, resolutions, patterns) without requiring dedicated hardware for each function
3Reliability
If each pixel receives material from a single nozzle, then the device complexity is low, but the reliability is reduced due to potential nozzle interruptions
Solution Approach 1:
The patent implements local quality by assigning multiple nozzles to deposit material for the same pixel region. This redundancy ensures that if one nozzle fails or clogs, other nozzles can compensate and continue depositing material, maintaining print reliability without requiring complete system reconfiguration
Data Source
AI summary
An apparatus includes a printing head (154) comprising jet nozzles (158) spaced apart from one another, where a distance from a first jet nozzle to a second jet nozzle positioned adjacent the first jet nozzle defines a jet-spacing, a printing head position control assembly includes a first actuator assembly (102) to move the printing head along the longitudinal axis and a second actuator assembly (103) to move the printing head along a latitudinal axis, and an control unit communicatively coupled to the printing head position control assembly. The control unit causes jet nozzles to dispense drops of binder (50) while the printing head traverses a first pass trajectory along the longitudinal axis in a first direction, indexes the printing head to a second pass trajectory along the latitudinal axis, and causes jet nozzles to dispense drops of binder while the printing head traverses the second pass trajectory along the longitudinal axis in a second direction.