Design And Characteristics Investigation Of Glue Spraying Device For Fiber Optic Winding

Fiber optic cable package is one of the key components of fiber guided missiles, and the gluing process has a decisive effect on winding efficiency, yield, stability and high speed release performance of the optical fiber cable in the process of fiber winding. The current fiber winding sizing process can not meet the requirements of fiber optic guided missile to the fiber optic cable package performance, therefore, it is very important to improve the quality and reliability of the fiber optic guided missile to carry out the research on the fiber winding automatic sizing device and its characteristics.Based on the function and technical index analysis of optical fiber winding automatic glue system, according to the optical fiber winding technology and the characteristics of the binder, this paper presents the method of using the stepping motor to drive the precision ball screw mechanism to drive the liquid storage tank. Overcoming the instability of flow control in pressure tank realizes the accurate and stable supply of the binder. Based on the analysis of the adhesive liquid and curing agent cost on the unit length of optical fiber, design and manufacture the fiber winding automatic glue experimental device according to calculating the liquid storage tank, linear module, deceleration step motor and the spray nozzle and other parts.Take SIEMENS S7-200 PLC as the core to realize the control of the automatic spraying process parameters change with fiber winding parameters. Construct the spray control hardware system, and design a series of control system software, such as fiber winding speed detection, variable assignment, feed and filling, limit switch, work instructions, air pressure control and so on. Realize the online control for glue quantity and atomizing air pressure, and the air pressure output error is less than 0.02MPa, and the minimum theoretical flow rate of binding element reaches 5.27uL/h.In order to study the characteristics of optical fiber spraying device, adopt high-speed photography to shoot spray fog field image. Based on MATLAB to realize image grayscale, binaryzation, edge detection, seed filling, area calibration and other technology processing, obtain evaluation of atomized spray effect index including spray cone angle, D32 and droplet relative size range. Take the spray flow rate and air pressure as variables to develop the experimental study about the effect of spraying parameters on the glue spraying quality.Experimental results show that:under the same air pressure, D32 increases with the increase of flow rate, and D32 increases faster with the increase of the flow rate when the pressure is small; The relative size range of the liquid drop becomes smaller gradually with the change of the flow, and then gradually becomes larger; the spray cone angle increases with the increase of the liquid flow rate and decreases with the increase of the flow rate when the spray cone angle reaches the maximum.Under the same flow rate, D32 decreases with the increase of air pressure, and D32 tends to be gentle with the increase of air pressure gradually when the air pressure is greater than 0.4MPa; the relative size range of the liquid drop is large when the air pressure is low, but it is gradually decreased with the increase of the air pressure when the air pressure is greater than 0.5MPa; the spray cone angle changes little with the change of air pressure when the liquid flow rate is from 2L/h to 6 L/h, but it increases with the increase of air pressure when the liquid flow rate is from 8L/h to 12 L/h.Research shows that the spraying device of optical fiber is able to gain good effect when air pressure is above 0.4MPa and the flow rate of the binder is between 4L/h and 6L/h.