Rotary Atomizer Shaft Locking Mechanism for Stable Alignment

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Solution Overview

Problem

Existing rotary atomizers lack an effective mechanism to securely lock the shaft in place during operation, leading to potential misalignment and inefficiencies in coating application.

Innovation Solution

A shaft locking mechanism featuring a locking pin and a compressed air-actuated system, utilizing a spring and o-ring seal to ensure secure engagement of the locking pin with the shaft when compressed air is not activated, and disengagement when air pressure is applied.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a shaft locking mechanism is implemented using compressed air actuation, then the shaft can be securely locked and unlocked during operation, but the device complexity increases due to additional components such as compressed air supply ports, springs, and locking pins

Engineering Contradiction:

Improveshaft locking reliabilityVSAvoidlocking mechanism complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent employs compressed air as the actuating force for the locking mechanism. A compressed air supply port is provided that delivers compressed air to move the locking pin between locked and unlocked positions. This pneumatic actuation system provides reliable and controllable shaft locking without requiring complex mechanical linkages or manual intervention.

Inventive Principle:

Principle #29Pneumatics and hydraulics

Solution Approach 2:

The locking mechanism transitions from a static locked state to a dynamic unlocked state through compressed air actuation. The spring component provides dynamic response by automatically returning the locking pin to the locked position when compressed air is released, enabling the shaft to be securely locked during operation and quickly unlocked when needed.

Inventive Principle:

Principle #15Dynamics

2Stability of the object's composition

If a spring-based locking pin mechanism is used, then the shaft maintains stable alignment during operation, but the manufacturing precision requirements increase for ensuring proper spring compression and locking pin engagement

Engineering Contradiction:

Improveshaft alignment stabilityVSAvoidlocking mechanism assembly precision

Core Design Contradiction:

Stability of the object's compositionVSManufacturing precision

Solution Approach 1:

The spring component is designed to automatically compress and extend based on the position of the locking pin, providing self-regulating alignment stability. When the locking pin engages with the shaft, the spring automatically compresses to maintain constant contact pressure, ensuring stable shaft alignment without requiring precise manual adjustment during assembly.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The spring provides pre-compression force that cushions and maintains stable contact between the locking pin and the shaft. This beforehand cushioning ensures that minor variations in manufacturing dimensions do not compromise the stability of shaft alignment, as the spring compensates for dimensional tolerances through its elastic deformation.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Adaptability or versatility

If the locking pin is designed with different diameters for shaft and spindle sides, then the locking mechanism can effectively engage both components, but the ease of manufacture decreases due to the complexity of machining non-uniform pin geometry

Engineering Contradiction:

Improvelocking pin compatibilityVSAvoidlocking pin fabrication

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The locking pin is designed with different diameters at different locations: a first diameter for engagement with the shaft and a second diameter for engagement with the spindle. This local quality variation allows the single locking pin component to effectively engage both the shaft and spindle components with different geometries, providing adaptability without requiring multiple separate locking components.

Inventive Principle:

Principle #3Local quality

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

The mechanism provides stable shaft locking, preventing misalignment and enhancing the precision and efficiency of coating application by maintaining consistent alignment during operation.

Implementation Method 1

a spring, wherein the spring is configured to place the locking pin spindle side in direct mechanical communication with the compressed air supply port when the compressed air supply is not activated

Methodology Applied

Scientific EffectElastic force: Elasticity

Implementation Method 2

based on a compressed air force 36 exceeding the spring force 34

Methodology Applied

Scientific EffectCompressed air force: Pressure Increase

Data Source

PatentUS20250332601A1Shaft locking mechanism and system for a rotary atomizer

Publication Date: 2025.10.30 A B DEV LTD

AI summary

A locking mechanism for a rotatable shaft can include a locking pin comprising a locking pin shaft side and locking pin spindle side, a compressed air supply port in fluid communication with a compressed air supply, and a spring, wherein the spring is configured to place the locking pin spindle side in direct mechanical communication with the compressed air supply port when the compressed air supply is not activated.