Coating liquid supplementing device

By designing a coating replenishment device, the problems of unstable coating and material waste in the production of thermistors were solved, achieving high-precision, bubble-free coating results and improving coating efficiency and material utilization.

CN224389201UActive Publication Date: 2026-06-23SHANGHAI SHENHE SENSOR CO LTD
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Patent Information

Application Number
CN202521162695.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-09
Publication Date
2026-06-23
Estimated Expiration
2035-06-09

AI Technical Summary

Technical Problem

Existing coating methods in the production of thermistors have problems such as unstable coating dimensions, bubble formation, and waste of coating materials. In particular, it is difficult to accurately control the liquid level when using large open containers and manual or automatic adjustments.

Method used

A coating liquid replenishment device was designed, including an overflow tank, a connecting box, a coating pipe, and a vacuum degassing mixer. By precisely adjusting the height of the coating pipe opening and using an adhesion plate, uniform distribution of coating liquid and high-precision coating can be achieved, reducing the generation of bubbles and avoiding poor coating.

Benefits of technology

It achieves high-precision, bubble-free coating surfaces, reduces coating material waste, ensures continuous coating within the service life of the coating liquid, and improves coating stability and efficiency.

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Abstract

The utility model discloses a coating liquid supplementing device, which relates to the technical field of coating and encapsulating equipment, and comprises an operating table and a connecting line, the bottom end of the connecting line is fixedly connected with a thermistor, and the thermistor performs coating operation through a coating mechanism. According to the utility model, the coating mechanism is arranged, and after the heights of the orifices of the coating pipes are adjusted to be consistent through processing and assembly precision, the heights and shapes of the slightly convex surfaces naturally formed after the liquid level overflows each time are consistent, so that coating surfaces with consistent heights can be provided for multiple points; as the coating surface is naturally formed when the liquid level overflows every time, the coating surface with very high repeated precision can be provided; due to the fact that the viscous coating liquid is large in surface tension, the section of the coating pipe is small, the slightly-convex coating surface can be naturally repaired when the viscous coating liquid is extruded out of the interior, influences such as air involved in external force of a scraper blade and the like are avoided, bad coating such as bubbles and pits can be reduced to the maximum extent, and coating on the thermosensitive resistor is facilitated.
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