Fiber Optic Connector Epoxy Dispensing With Adaptive Pressure Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In fiber optic connector manufacturing, achieving precise epoxy dispensing is challenging due to variations in needle diameter, epoxy viscosity, syringe swelling, temperature, and humidity, leading to issues of underfill or overfill, which can affect connector performance and reliability.
Innovation Solution
An automated system using a controller and camera to monitor epoxy dispensing, applying a step function of pressures and adjusting based on real-time feedback to ensure the right amount of epoxy is dispensed, with initial high pressure for quick fill and lower pressure for precision, and adapting to different epoxy types and conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single pressure setting is used for epoxy dispensing, then the process is simple and fast, but the precision of epoxy filling is poor leading to underfill or overfill
Solution Approach 1:
The dispensing process is divided into multiple stages with different pressure settings: an initial high-pressure stage for rapid epoxy delivery, followed by a reduced-pressure stage for precise filling control. This segmentation allows the system to achieve both speed and precision without requiring a completely complex control system.
Solution Approach 2:
The pressure parameter is made dynamic rather than static, allowing it to change during the dispensing process. The system automatically adjusts pressure from high to low based on dispensing progress, enabling precise control of epoxy fill amount while maintaining operational simplicity.
2Productivity
If high pressure is applied throughout dispensing, then filling speed is fast, but epoxy overflow and overfill occur
Solution Approach 1:
The dispensing process is divided into two distinct phases: a first phase with high pressure for rapid epoxy delivery to achieve high productivity, and a second phase with reduced pressure for precise fill control. This temporal segmentation allows the system to maximize speed during the majority of the process while ensuring precision during the critical final stages.
Solution Approach 2:
The pressure application follows a periodic pattern with an initial high-pressure period followed by a lower-pressure period. This periodic variation in pressure enables the system to achieve both high filling speed and accurate fill control by applying different pressure levels at different times during the dispensing cycle.
3Manufacturing precision
If low pressure is applied throughout dispensing, then epoxy overflow is prevented, but filling time increases significantly
Solution Approach 1:
The dispensing process is segmented into a high-speed initial phase and a precision final phase. By applying high pressure during the initial phase, the system rapidly delivers the majority of the epoxy, minimizing total filling time. The subsequent low-pressure phase ensures precise control and prevents overflow, achieving both speed and accuracy.
Solution Approach 2:
The system performs preliminary high-pressure dispensing to deliver the bulk of the epoxy quickly, establishing the foundation for rapid filling. This preliminary action is followed by reduced-pressure control to prevent overflow, allowing the system to achieve high productivity without sacrificing precision.
4Manufacturing precision
If manual epoxy dispensing is used, then equipment complexity is low, but consistency and precision of epoxy filling are poor
Solution Approach 1:
The system employs dynamic pressure control that automatically adjusts during the dispensing process, eliminating the inconsistencies of manual operation. By making pressure a variable parameter that changes based on dispensing progress rather than a fixed manual setting, the system achieves high consistency and precision while maintaining operational simplicity.
Solution Approach 2:
The system incorporates feedback mechanisms that monitor the dispensing process and automatically adjust pressure settings to maintain consistent fill amounts. This feedback control eliminates the variability inherent in manual dispensing, achieving high precision and repeatability without requiring complex manual skill or adjustment.
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
This approach significantly reduces the time required for epoxy filling, ensures precise epoxy amounts, minimizing the risk of underfill or overfill, and enhances the reliability and performance of fiber optic connectors by maintaining optimal epoxy placement.
Implementation Method 1
a first pressure P1 is applied for a first time T1... followed by a second pressure P2 for a second time T2
Data Source
AI summary
An example method of filling epoxy in a fiber optic connector includes: applying the epoxy to a ferrule of a first connector at a first pressure for a first period of time; applying the epoxy to the first connector at a second pressure for a second period of time until the epoxy is sensed to exit a hole defined by the ferrule of the first connector; comparing the second period of time to a threshold; when the second period of time is greater than the threshold, increasing the first pressure, the first period of time, or the second pressure; and when the second period of time is less than the threshold, decreasing the first pressure, the first period of time, or the second pressure.