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在拉制光纤过程中,由于控制回路多、要求精度高、工艺变量多,特别是对于光纤在拉制过程中外径的控制分别受到光纤拉丝机的送料系统、石英光纤预制件的熔融系统、光纤直径的测量控制系统、光纤的牵引系统、气流量等因素的牵制,使得光纤的质量难于保证,合格率低,成本较高。如能采用计算机集中对以上各系统中参数进行检测和控制,则不仅能显著提高光纤质量,保证大长度光纤的外径一致,而且可以减少材料损耗,降低成本,提高生产效率。一台完整的光纤拉丝机主要由送棒、石墨炉、测温仪、测径仪、一次涂敷、对中心、烘干、牵引及收排线等系统组成。用
In the process of drawing optical fiber, due to many control loops, high precision and many process variables, especially for the control of the outer diameter of the optical fiber in the drawing process, they are respectively controlled by the feeding system of the optical fiber drawing machine, the melting system of the quartz optical fiber preform, Diameter measurement and control system, optical fiber traction system, airflow and other factors, making it difficult to ensure the quality of optical fiber, low pass rate and high cost. If the computer can focus on the above parameters of the system to detect and control, then not only can significantly improve the quality of optical fiber to ensure that the large diameter optical fiber of the same diameter, and can reduce material loss, reduce costs and increase production efficiency. A complete optical fiber drawing machine is mainly composed of rods, graphite furnace, thermometer, diameter measuring instrument, a coating, the center, drying, traction and collecting cable systems. use