Automatic temperature control method and device for optical fiber coating

Abstract

The invention relates to a method and device for automatically controlling the temperature of an optical fiber coating, comprising an optical fiber coater provided with a heating chamber, the heating chamber of the optical fiber coater is connected with a circulation heater through a circulation pipeline, the heating chamber, the circulation pipeline And the circulation heater is filled with liquid heat conduction medium, and the circulation heater heats the coating in the optical fiber coater through the circulation heating of the liquid heat conduction medium. The signal and the temperature sensing signal of the liquid heat-conducting medium are compared with the preset parameter values ​​to control the heating process of the circulating heater, thereby realizing the automatic control and adjustment process of the coating temperature in the optical fiber coater. The invention can automatically change the paint temperature with the wire drawing speed during the fiber drawing process, achieve a good match between the paint temperature (or viscosity) and the wire drawing speed, ensure the quality of the coating layer on the surface of the optical fiber, and improve the finished product rate of the optical fiber processing.

Description

technical field [0001] The invention relates to an automatic control method and device for optical fiber coating temperature in the optical fiber coating process, belonging to the technical field of optical fiber processing. Background technique [0002] In the fiber drawing process, in order to protect the surface of the glass fiber, it is necessary to coat the surface of the fiber with multiple layers of coating (coating). Optical fiber coating is completed by coating optical fiber coating, which is usually made of polymer resin compound material, which is liquid at room temperature. The viscosity of paint changes with temperature. In order to obtain better coating quality on the optical fiber surface, a good match between coating viscosity, coating temperature and drawing speed is required during the drawing process. [0003] During the drawing process, as the drawing speed increases, the surface temperature of the optical fiber becomes higher and higher. In order to m...

AI Technical Summary

Problems solved by technology

In this case, it is more and more difficult to meet the requirements of high-speed wire drawing for coating coating by using the traditional fixed temperature heating method, and it is difficult to guarantee the coating quality of optical fibers

In the process of high-speed wire drawing, problems such as paint spillage and coating layer defects are becoming more and more serious, and have become serious obstacles that limit the further improvement of wire drawing speed

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