Research On The Key Technology Of Glass Optical Fiber Small Drawing Tower

With the continuous development of optical fiber communication and the continuous improvement of people’s communication quality standards,the technology of manufacturing optical fibers has also been improved.Manufacturing optical fibers with good performance has become a necessary condition for researchers from all over the world to study new special optical fibers or fundamental problems during optical fibers.Therefore,this paper aims to design a new drawing control device,and the effect of fiber drawing is mainly affected by the fiber drawing speed and the temperature of the heating furnace.In order to meet the needs of the laboratory,it can draw the specified optical fiber.The design of this thesis mainly includes the following contents.1)First of all,according to the needs of the laboratory,we need to design a heating furnace for drawing results.When designing,it is necessary to consider the material selection of the heating body and the design of the temperature layer to meet the softening conditions of the optical fiber preform,while preventing heat leakage and ensuring the safety of the experiment.In addition,it is necessary to understand the heat transfer method of the heating furnace of the small glass fiber drawing tower.After thermal analysis,it can be roughly summarized into three ways: heat conduction,heat convection and radiation heat.2)In order to analyze whether the temperature of the heating element can reach the high temperature of 1400 °C for the softening of the preform,it can be analyzed by the finite element analysis method.At the same time,SOILDWORKS software can be used to model the insulation cover and silicon carbide rod heating element one to one,and then the model can be substituted into ANSYS software for temperature field analysis.In addition,it is necessary to analyze the temperature layer through which the optical fiber preform passes,including the above three heat transfer methods,which must also be substituted into the ANSYS software for analysis.Finally,it is found that the silicon carbide rod heating element can reach the softening temperature of the optical fiber preform.At the same time,SUMULINK is used to simulate the PID algorithm,and the specific PID parameters are calculated through simulation to reduce the number of actual measurements.3)The overall frame design for the small glass fiber drawing tower needs to include mechanical design,hardware design and software design.It is necessary to analyze the requirements of the required equipment during design to meet the requirements of accurate measurement and precise control.In the design of the software part,it is necessary to analyze the direction of the data flow,the display part,the algorithm part and the data acquisition part.A BOA server can be established to enable the software to transmit data online and use the PID algorithm to precisely control the temperature and stepper motor.At the same time,the fiber diameter automatic control algorithm is used to ensure that the diameter of the drawn wire meets the requirements of the fiber.The focus of this article is to control the temperature and drawing speed of the small glass fiber drawing tower by using the silicon carbide rod heating element and the tractor,adopt the transmission method of message queue and the conversion between HTML language and C language,and monitor and control the process in real time through the webpage.The setup completes the fabrication from glass preforms to glass optical fibers.In this experiment,the PID algorithm and automatic wire diameter control algorithm can be used to accurately control the furnace temperature and fiber diameter,which provides a valuable reference for the production and control of glass fiber drawing towers.