State Determination Device for Paint Atomizer Whirling Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current paint devices face challenges in detecting centrifugal whirling of the rotary atomizer head, which can lead to damage of the rotational shaft and air motor bearing, and this issue is not limited to the atomizer head but also affects other rotating components like the paint gear pump and wrist device.
Innovation Solution
A state determination device that includes a vibration detection unit and a frequency component acquisition unit to detect vibrations and determine abnormalities by analyzing frequency components, allowing for early detection of issues such as centrifugal whirling in the air motor, gear pump, and rotational units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vibration detection is performed using conventional methods, then the structure remains simple, but the ability to detect centrifugal whirling abnormalities is insufficient and damage is only recognized after it occurs
Solution Approach 1:
The vibration detection system is segmented into multiple functional units: a vibration detection unit with multiple sensors positioned at different locations, a frequency component acquisition unit that separates vibration signals into frequency components, and an abnormality determination unit that analyzes specific frequency ranges. This segmentation enables precise detection of centrifugal whirling by analyzing frequency components specific to rotational abnormalities, thereby improving reliability without requiring an overly complex integrated system.
Solution Approach 2:
The patent introduces an intermediary processing stage between raw vibration detection and abnormality determination. The frequency component acquisition unit acts as an intermediary that transforms raw vibration signals into frequency domain representations, allowing the abnormality determination unit to focus on specific frequency ranges associated with centrifugal whirling. This intermediary step enhances detection capability while maintaining system manageability.
2Reliability
If no vibration detection system is installed, then the device complexity is low, but the rotational shaft and bearing may be damaged without early warning
Solution Approach 1:
The vibration detection system performs preliminary detection of abnormalities before they lead to component damage. By continuously monitoring vibration frequency components and identifying patterns associated with centrifugal whirling, the system provides early warning that allows preventive maintenance actions to be taken, preventing damage to the rotational shaft and bearing while maintaining reasonable system complexity.
Solution Approach 2:
The system implements feedback through continuous vibration monitoring and analysis. The abnormality determination unit provides feedback about the detected frequency components to indicate the presence of centrifugal whirling, enabling operators to take corrective action before damage occurs. This feedback mechanism enhances reliability by enabling preventive maintenance while keeping the detection system relatively simple through focused analysis of specific frequency ranges.
3Adaptability or versatility
If multiple rotating components are monitored, then comprehensive coverage is achieved, but the detection system becomes more complex
Solution Approach 1:
The vibration detection system is designed with universal applicability to multiple rotating components including the rotary atomizer head, paint gear pump, and wrist device. By using the same basic detection and analysis methodology across different components, the system achieves comprehensive coverage without proportionally increasing complexity. The frequency-based analysis approach works universally for detecting centrifugal whirling in various rotating parts.
Solution Approach 2:
The patent merges the detection approach for multiple rotating components into a unified system. Instead of implementing separate detection systems for each component, the same vibration sensors and frequency analysis methodology are applied across all rotating parts. This merging strategy achieves comprehensive monitoring coverage while avoiding the complexity multiplication that would result from independent detection systems for each component.
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
Enables the early detection of abnormalities in paint device components, preventing damage and ensuring continuous operation by identifying issues like centrifugal whirling before they cause significant harm.
Implementation Method 1
a vibration detection unit 130 that detects vibrations of the paint device 1
Implementation Method 2
a frequency component acquisition unit 22 that acquires frequency components caused by a contact between the rotational shaft 104 and the air motor 102 from a detection result by the vibration detection unit 130
Implementation Method 3
If the rotary atomizer head is eccentric with respect to the rotational shaft, centrifugal whirling is generated
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A state determination device determines a state of a paint device including an air motor that rotates by a supply of a gas, a rotational shaft that serves as a rotational center of the air motor, and a rotary atomizer head that is connected to the rotational shaft and sprays paint. The paint device further includes a vibration detection unit that detects a vibration of the paint device, and the state determination device includes a frequency component acquisition unit and an abnormality determination unit. The frequency component acquisition unit acquires a frequency component caused by a contact between the rotational shaft and the air motor from a detection result by the vibration detection unit. The abnormality determination unit determines whether an abnormality of the air motor exists or not based on an acquisition result by the frequency component acquisition unit.