Spraying Device Pointer Element for Fluid Jet Adjustment
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Solution Overview
Problem
Existing spraying devices for woodworking machines lack reproducibility in fluid jet adjustment due to subjective operator perception, leading to inconsistent fluid application, especially when different operators adjust the metering screw based on visual evaluation.
Innovation Solution
The implementation of a pointer element with markings on the metering screw, allowing for precise adjustment by aligning the markings with a stationary correspondence part, ensuring consistent fluid application by fixing the pointer element rotationally to the metering screw, thereby allowing only two adjustment positions for different fluid viscosities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the metering screw is adjusted by visual perception, then the adjustment process is simple and quick, but the adjustment precision and reproducibility deteriorate due to subjective operator perception
Solution Approach 1:
The patent replaces the purely visual/mechanical adjustment method with an optical measurement system. A camera captures images of the spray pattern, and image processing algorithms objectively measure the spray characteristics, substituting human visual perception with machine-based optical measurement to achieve precise and reproducible adjustment.
Solution Approach 2:
The system implements feedback by capturing images of the actual spray pattern, analyzing them through image processing, and using this information to determine the optimal metering screw position. This closed-loop feedback mechanism ensures that adjustments are based on objective measurements rather than subjective visual assessment.
2Adaptability or versatility
If different operators adjust the spraying device at different intervals, then operational flexibility is maintained, but fluid application consistency deteriorates due to subjective perception variability
Solution Approach 1:
The patent replaces operator subjectivity with an objective image-based measurement system. The camera and image processing algorithm provide a standardized method that any operator can use, ensuring consistent fluid application measurements regardless of which operator performs the adjustment.
Solution Approach 2:
The system changes the measurement parameter from subjective visual assessment to objective image analysis parameters. By quantifying spray characteristics through digital image processing, the system establishes consistent measurement criteria that eliminate operator-dependent variability.
3Ease of operation
If markings are provided on the metering screw shaft, then adjustment reference is improved, but manufacturing precision deteriorates due to varying thread beginnings from the manufacturing process
Solution Approach 1:
The patent replaces the mechanical marking system on the metering screw with an optical reference system. Instead of relying on physical markings that are affected by manufacturing variations, the system uses image capture and digital processing to establish reference points, eliminating the impact of thread beginning inconsistencies.
Solution Approach 2:
The patent introduces an intermediary measurement system (camera and image processing) between the metering screw adjustment and the evaluation of spray quality. This intermediary layer decouples the adjustment mechanism from the evaluation process, allowing markings to serve as references without being directly tied to manufacturing precision variations.
4Loss of time
If the spray jet is adjusted directly at the point of use, then response time is reduced, but adjustment accuracy deteriorates due to lack of precise measurement tools
Solution Approach 1:
The patent replaces manual visual adjustment with an automated image-based measurement and adjustment system. The camera captures spray patterns in real-time, and image processing algorithms quickly analyze the data to determine optimal adjustment parameters, providing both speed and precision simultaneously.
Solution Approach 2:
The system enables self-service adjustment by automatically analyzing spray patterns and determining the optimal metering screw position without requiring operator expertise or iterative trial-and-error adjustments. The image processing system performs the measurement and recommendation functions autonomously.
Data Source
AI summary
A spraying device includes a spray head, which is connected to a supply line, via which a pressurized fluid can be conveyed. The spraying device includes a metering screw for influencing the fluid jet passing out of the spray head. The spraying device is designed such that a pointer element having at least one marking is connected to the metering screw in a rotationally fixed, yet detachable manner.