Dosing Module Actuation Window for Precise Nozzle Tube Handling
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Solution Overview
Problem
Existing dosing systems face challenges in precisely and reproducibly inserting and operating nozzle tubes, leading to potential damage and reduced precision in droplet dispensing due to incorrect alignment and deformation during actuation.
Innovation Solution
A dosing module with a bracket that fixes the nozzle tube to two portions, featuring an actuation window for indirect handling and deformation, allowing for improved alignment and reduced risk of damage, and includes guidance structures for precise module coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the nozzle tube is inserted into a guide groove and covered with a flat plate, then the nozzle tube can be held in place, but incorrect orientation can cause the nozzle tube to protrude and be crushed
Solution Approach 1:
The bracket serves as an intermediary component between the guide groove and the nozzle tube. It provides a protected environment where the nozzle tube is held securely without direct contact with crushing surfaces, while still allowing precise positioning and orientation during insertion and operation.
Solution Approach 2:
The bracket divides the holding function into multiple portions that can independently secure different parts of the nozzle tube. This segmentation allows precise control over the nozzle tube's position and orientation while preventing protrusion that could lead to crushing.
2Ease of manufacture
If the nozzle tube dimensions do not match the guide groove dimensions, then insertion is simplified, but excessive pre-deformation or clearance reduces dispensing precision
Solution Approach 1:
The bracket acts as an intermediary that accommodates dimensional variations between the nozzle tube and guide groove. It provides a standardized interface that ensures precise positioning and orientation of the nozzle tube regardless of minor dimensional discrepancies, thereby maintaining dispensing precision while simplifying the insertion process.
3Ease of operation
If the nozzle tube is directly fastened to the bracket, then positioning is simplified, but the risk of damage during actuation increases
Solution Approach 1:
The bracket serves as a protective intermediary between the actuator and the nozzle tube. It provides a buffered interface that allows the nozzle tube to be securely positioned and fastened while protecting it from direct mechanical stress and damage during actuation cycles.
Solution Approach 2:
The bracket structure is designed to provide beforehand cushioning and protection for the nozzle tube before damage can occur. It creates a protective environment that absorbs and distributes mechanical stresses during actuation, preventing direct damage to the nozzle tube while maintaining secure positioning.
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
Enhances the precision and reproducibility of droplet dispensing by stabilizing the nozzle tube's position and orientation, reducing the risk of damage, and simplifying the operation of the dosing system.
Implementation Method 1
a radially elastic portion of the nozzle tube is exposed
Implementation Method 2
The production of small, free-flying droplets requires sufficient energy transfer to separate the desired volumes from a liquid column or to detach them from their production structure
Data Source
AI summary
A dosing module for use in a dosing system configured to dispense droplets at an outlet opening of the nozzle tube by deformation of a nozzle tube is provided. The dosing module includes a bracket and a nozzle tube which is fastened to the bracket and has the outlet opening. The bracket includes an actuation window which penetrates the bracket and in which a radially elastic portion of the nozzle tube is exposed, wherein portions of the nozzle tube spaced apart from each other in the longitudinal direction of the nozzle tube are fixed by portions of the bracket arranged on opposite sides of the actuating window.