Adjustable Nozzle Orifice Geometry for Adhesive Dispensing
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Solution Overview
Problem
Existing nozzles for dispensing adhesive and sealing compounds in motor vehicle glazing require precise geometry adjustments, which are often irreversible and require manual skill, leading to inefficiencies and increased waste due to suboptimal initial cuts.
Innovation Solution
A nozzle with a positionable control element that allows for adjustable geometry of the orifice opening, enabling variations in both shape and size, allowing for optimization during use and ensuring the material strand is directed optimally to the application site.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the nozzle body is cut manually to produce the orifice profile, then the geometry can be customized for the application purpose, but the process requires high manual skill and is irreversible, leading to waste if the geometry is incorrect
Solution Approach 1:
The nozzle incorporates an adjustable control element that allows the orifice geometry to be dynamically modified after manufacturing. This transforms a static, irreversible cutting process into a dynamic, reversible adjustment process, eliminating the need for high manual skill while maintaining customization capability.
Solution Approach 2:
The nozzle is divided into separate functional components: a fixed nozzle body and an adjustable control element. This segmentation allows the geometry-adjusting function to be isolated in the control element, which can be independently adjusted without affecting the entire nozzle structure, thereby reducing manufacturing complexity.
2Manufacturing precision
If multiple sample nozzles are cut to find the optimal geometry, then the correct geometry can be achieved, but the time and number of nozzles required increases significantly
Solution Approach 1:
The adjustable control element enables continuous geometry optimization during the glazing process itself. Instead of requiring multiple pre-manufactured sample nozzles, the single nozzle can be dynamically adjusted to achieve optimal geometry, dramatically reducing the time and number of nozzles needed.
Solution Approach 2:
The nozzle system allows the user to self-optimize the geometry during actual use by adjusting the control element. This eliminates the need for external intervention to manufacture multiple sample nozzles, enabling on-demand geometry optimization without additional time or resource investment.
3Quantity of substance
If the orifice opening is made larger to ensure material flow, then the material can be delivered adequately, but the geometry may become suboptimal for the specific application
Solution Approach 1:
The control element provides dynamic adjustment capability that allows the user to start with a larger orifice opening to ensure adequate material flow, then precisely reduce and optimize the geometry for the specific application. This reverses the traditional constraint where geometry must be optimized before use.
Solution Approach 2:
The design allows for initial excessive material flow through a larger opening, ensuring adequate supply, and then enables partial reduction of the opening to achieve optimal geometry. This approach prioritizes material flow first, then refines geometry as needed.
Data Source
AI summary
A nozzle for the discharge of a flowable substances, for example adhesive or sealing compositions, having a discharge orifice with a variable geometry. The adjustable nozzle permits the user to select the optimal discharge profile suited to a particular application of the composition being discharged.