Flux Supply Port Layout for Faster Tray Film Thickness Control
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Solution Overview
Problem
Existing viscous fluid supply devices face challenges in efficiently adjusting the film thickness of viscous fluid in storage trays, requiring multiple rotations and supply cycles, which increases the time needed for uniform distribution and resupply.
Innovation Solution
A viscous fluid supply device with a movable ejection port and multiple ejection ports allows for simultaneous distribution of viscous fluid across a wide area of the storage tray, reducing the time required to adjust film thickness by enabling simultaneous flattening with a squeegee and optimizing flux resupply to areas with varying flux levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single ejection port is used to supply viscous fluid to the storage tray, then the device structure is simple, but the time required to adjust film thickness increases due to sequential supply across the tray area
Solution Approach 1:
The ejection device is divided into multiple ejection ports arranged in the tray width direction, allowing simultaneous supply of viscous fluid to different regions of the storage tray. This segmentation enables parallel operation, reducing the time required to achieve uniform film thickness across the entire tray area.
Solution Approach 2:
The ejection ports are arranged in the width direction (Y-axis) of the tray rather than sequentially along the movement direction (X-axis). This spatial reconfiguration allows simultaneous coverage of multiple regions, transforming a sequential one-dimensional supply process into a parallel multi-point supply system.
2Manufacturing precision
If the ejection port supplies viscous fluid to the entire storage tray area, then uniform distribution is achieved, but the time required for multiple rotations and resupply cycles increases
Solution Approach 1:
The multiple ejection ports pre-distribute the viscous fluid to predetermined positions across the tray width before the squeegee passes through. This preliminary distribution ensures that fluid is already in position for immediate flattening, eliminating the need for multiple rotation cycles and resupply operations to achieve uniform coverage.
Solution Approach 2:
The viscous fluid supply and squeegee flattening operations are performed simultaneously and continuously in one pass. The multiple ejection ports maintain continuous fluid supply across the tray width while the squeegee continuously flattens the fluid, creating a continuous useful action that eliminates idle rotation time between supply and flattening phases.
3Ease of operation
If viscous fluid is supplied to a limited area of the storage tray, then the ejection device is simpler to operate, but additional tray rotations are needed to cover the entire area
Solution Approach 1:
The ejection ports are segmented into multiple independent units positioned across the tray width, with each port controlling supply to a specific region. This segmentation maintains operational simplicity while enabling simultaneous multi-region coverage, eliminating the need for multiple rotation cycles to achieve complete tray coverage.
Data Source
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AI summary
In a flux unit (30) of the present invention, a flux supply device (126) configured to eject flux to a storage tray (122) has an ejection port (156) configured to eject the flux, and an ejection port moving device (148) configured to move the ejection port (156) in the radial direction of the storage tray (122). By this, the flux is ejected in a wide range in the radial direction of the storage tray (122). Also, the storage tray (122) is rotated by a tray rotation device (120). Thus, the film thickness of the flux ejected in the wide range of the storage tray is adjusted by a squeegee all at once. Thus, the time required for adjusting the film thickness of the flux can be reduced.