Asymmetrical Nozzle Layout for Variable-Thickness Squirt Jets
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Solution Overview
Problem
Existing nozzle devices for applying highly viscous materials produce symmetrical squirt jets, leading to uniform layer thicknesses that are unsuitable for curved surfaces, and struggle to achieve varying layer thicknesses without high material usage or sharp edges, failing to meet customer requirements for quality and aesthetics.
Innovation Solution
A nozzle device with an asymmetrical distribution recess and nozzle elements that distribute application material asymmetrically, allowing for continuous changes in material quantity along the outlet opening, generating a squirt jet with varying layer thicknesses suitable for curved surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a symmetrical nozzle design is used, then the manufacturing is simple and consistent, but the layer thickness cannot be continuously varied on curved surfaces
Solution Approach 1:
The patent applies asymmetry by providing a nozzle element with an asymmetrical distribution recess that is offset from the center plane of the outlet opening. This asymmetrical geometry enables continuous variation of layer thickness across the application width, allowing the nozzle to adapt to curved surfaces and complex geometries while maintaining a relatively simple overall nozzle structure.
2Manufacturing precision
If two offset slot-shaped openings are used to achieve varying layer thickness, then the layer thickness can be varied, but very high material quantity is applied and application speed must be very high
Solution Approach 1:
The patent implements local quality by creating continuous variation of the distribution recess dimensions along the outlet opening. This allows different local regions of the outlet to dispense different quantities of material, achieving precise layer thickness control across the application width without requiring multiple separate openings or high application speeds.
3Manufacturing precision
If two slot-shaped openings are used with different lengths, then different layer thicknesses can be achieved, but a sharp step transition forms instead of continuous variation
Solution Approach 1:
The patent applies dynamics by designing the distribution recess with continuously varying dimensions along the outlet opening. Instead of discrete step changes from multiple openings, the asymmetrical recess creates a dynamic, continuous gradient in material distribution, resulting in smooth transitions of layer thickness without sharp edges or steps.
4Ease of manufacture
If the nozzle can only apply in one direction, then the longer opening always precedes the shorter opening, but the nozzle lacks versatility for bidirectional application
Solution Approach 1:
The asymmetrical distribution recess is designed to be substantially symmetrical relative to a center plane, which provides inherent bidirectional capability. This modified symmetry allows the nozzle to function effectively in both application directions while maintaining a simple, manufacturable geometry that does not require complex adjustments or reconfigurations.
Data Source
AI summary
A nozzle device for dispensing a squirt jet of an application material, comprising a, slot-shaped, outlet opening for the application material and a nozzle element, wherein the nozzle device and/or the nozzle element has an asymmetrical distribution recess for the application material, to distribute a material quantity asymmetrically along the outlet opening and/or to dispense a material quantity that changes, continuously, along the outlet opening. The disclosure also relates to an associated application method.