Quick-Change Nozzle Alignment for Tool-Free Secure Mounting

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Solution Overview

Problem

Existing nozzle systems for applying application agents, such as sealants and adhesives, require frequent changes and alignment, often necessitating additional tools or disassembly of components, leading to inefficiencies and increased complexity.

Innovation Solution

A quick-change nozzle system with a rotationally asymmetrical alignment device and conical mounting recesses allows for secure, tool-free nozzle exchange and alignment, ensuring correct orientation without additional tools or disassembly beyond the nozzle itself, utilizing a compact and flat design for easy integration with application blocks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional nozzle systems are used with screw connections and clamping plates, then secure mounting is achieved, but nozzle change time increases and additional tools are required

Engineering Contradiction:
Improvesecure mountingVSAvoidnozzle change time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The nozzle is divided into a nozzle body and a separate mounting base that can be quickly detached. The mounting base remains on the application system while only the nozzle body needs to be exchanged, reducing the complexity of nozzle changes and eliminating the need for additional fastening components.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The nozzle mounting base incorporates self-aligning features with the application system that automatically ensure correct orientation and secure attachment without requiring additional tools or complex alignment procedures. The system self-regulates the mounting process through its geometric design.

Inventive Principle:
Principle #25Self-service

2Adaptability or versatility

If nozzles are designed for frequent changes, then adaptability is improved, but alignment precision deteriorates

Engineering Contradiction:
Improvenozzle change frequencyVSAvoidalignment precision
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The mounting base and nozzle body feature asymmetrical geometric shapes with specific profile contours that enable only one correct orientation for attachment. This asymmetric design ensures precise alignment is automatically achieved during the quick-change process, eliminating alignment errors that would otherwise occur with frequent nozzle exchanges.

Inventive Principle:
Principle #4Asymmetry

3Manufacturing precision

If alignment devices are added to ensure correct orientation, then alignment precision is improved, but device complexity increases

Engineering Contradiction:
Improvealignment precisionVSAvoidalignment device complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The alignment function is merged into the basic geometric structure of the mounting base and nozzle body themselves. The profile shapes of these components inherently provide alignment guidance and orientation control, eliminating the need for separate, complex alignment devices while maintaining precise alignment during nozzle changes.

Inventive Principle:
Principle #5Merging (Combining)

4Productivity

If quick-change mechanisms are implemented, then nozzle change speed is improved, but structural complexity increases

Engineering Contradiction:
Improvenozzle change speedVSAvoidchange system structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The complex fastening and alignment mechanisms are extracted from the nozzle itself and transferred to the mounting base that remains fixed on the application system. This allows the nozzle body to be a simple, lightweight component that can be quickly exchanged, while the more complex structural features are concentrated in the reusable mounting base.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The mounting base is designed as a universal component that can accommodate different nozzle bodies through its geometric profile system. This multi-functional design allows a single mounting base structure to serve multiple nozzle types, reducing overall system complexity while enabling quick changes between different nozzle configurations.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP3227594B1Quick-change nozzle, associated nozzle quick-change system and associated application system
Publication Date: 2022.07.06 DUERR SYST AG
  • EP3227594B1 patent drawingFigure 1
  • EP3227594B1 patent drawingFigure 2
  • EP3227594B1 patent drawingFigure 3~4

AI summary

The invention relates to an interchangeable nozzle (D1, D2), in particular a quick-change nozzle, for application of an application means onto a component and for fastening to a nozzle change system (X1, X2). The nozzle (D1, D2) comprises a nozzle base having an alignment device (A1, H2) for the angularly correct, mechanical alignment of the nozzle (D1, D2) relative to the change system (X1, X2). The invention further relates to an associated change system (X1, X2) and to an associated application system (100).