Liquid discharge device, liquid discharge apparatus, and dyeing apparatus
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Solution Overview
Problem
Conventional liquid discharge apparatuses face challenges in maintaining accurate alignment between the nozzle row and the thread during movement, leading to posture changes and misalignment, which affects the reliability and accuracy of liquid discharge, resulting in poor color reproducibility.
Innovation Solution
The liquid discharge device incorporates a carriage with a coupling disposed orthogonally to the guide shaft axis between the two bearings, minimizing posture changes and ensuring precise alignment by distributing the moving force effectively, and utilizes a tension coil spring to stabilize the carriage, reducing deviations and maintaining accurate positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the coupling is positioned above the bearing (conventional structure), then the structure is simple, but the carriage experiences posture changes and misalignment during movement
Solution Approach 1:
The coupling is repositioned from a vertical arrangement (above the bearing) to a horizontal arrangement (on the guide shaft axis), changing the spatial dimension of force application. This dimensional shift allows the driving force to be applied directly along the movement axis, eliminating posture changes and misalignment while maintaining structural simplicity.
2Reliability
If the coupling is disposed on the guide shaft axis orthogonal to the axis, then alignment accuracy improves, but the device structure becomes more complex
Solution Approach 1:
The guide shaft axis serves multiple functions: it guides the carriage movement, supports the coupling, and provides the axis for orthogonal force application. By making the guide shaft structure multi-functional, the patent achieves improved reliability without proportionally increasing device complexity, as the same structural element performs multiple roles.
3Manufacturing precision
If the coupling is positioned above the bearing, then the structure is compact, but the nozzle row alignment with thread deteriorates during carriage movement
Solution Approach 1:
The coupling acts as an intermediary element that transmits the driving force from the driver to the carriage along the guide shaft axis. By positioning the coupling on the axis orthogonal to the guide shaft, it mediates the force transmission in a way that maintains carriage stability and prevents misalignment during movement, while still allowing compact design.
Data Source
AI summary
A liquid discharge apparatus includes a liquid discharge head including a nozzle face in which a nozzle is formed and configured to discharge a liquid, a carriage on which the liquid discharge head is mounted, and a guide shaft configured to hold the carriage movably. The liquid discharge apparatus further includes a driver configured to move the carriage, and a coupling between the carriage and the driver. The coupling is disposed on an axis of the guide shaft in a direction orthogonal to the axis of the guide shaft.