Method and apparatus for detecting liquid accumulation at the lower end of a nozzle

The method and apparatus allow for accurate detection and prevention of liquid accumulation at the nozzle tip by moving the nozzle to a detection surface and checking for adhesion, ensuring consistent coating quality through automatic cleaning and alerts.

JP7873910B2Active Publication Date: 2026-06-15MUSASHI ENG INC
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Patent Information

Application Number
JP2025562052
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2024-02-22
Filing Date
2025-02-18
Publication Date
2026-06-15
Estimated Expiration
2045-02-18

AI Technical Summary

Technical Problem

Existing methods for detecting liquid accumulation at the nozzle tip in liquid material coating devices are inaccurate and require complex setups, making it difficult to determine if the accumulation exceeds acceptable limits, especially in flying-dispensing systems.

Method used

A method and apparatus that involves moving the nozzle to a detection position, lowering it to a predetermined distance from a detection surface without dispensing, and using a detection device to check for liquid adhesion on the surface, allowing for accurate detection of liquid accumulation at the nozzle tip.

Benefits of technology

Enables simple and highly accurate detection of liquid accumulation, preventing abnormal coating by detecting even small amounts of liquid at the nozzle tip, and includes automatic cleaning and alert mechanisms to ensure consistent coating quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

[Problem] To provide a technique with which it is possible to simply and accurately determine a liquid pool generated at the lower end of a nozzle. [Solution] Provided are a method for detecting a liquid pool at the lower end of a nozzle of a liquid material ejection device, and a detection device that executes the method. The method comprises: a first step in which a nozzle 103 is moved to a detection position on a detection surface; a second step in which the nozzle 103 is lowered until the distance between the lower end of the nozzle 103 and the detection surface 107a reaches a predetermined detection distance L and, is raised once the predetermined detection distance L is reached; and a third step in which a liquid pool at the lower end of the nozzle 103 is detected by detecting whether a liquid material is attached to the detection surface 107a by the detection device 104.
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Citation Information

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