一种对光缆护套挤塑自动闭环控制的设计与运用

护套主要起到保护光缆缆芯的作用,保证其内部光纤传输、施工和使用过程中免受伤害,使其传输性能稳定,同时护套的好坏还直接影响光缆的抗拉、抗压以及抗冲击等机械性能。光缆护套作为光缆保护的最后一道屏障,其质量不但关系到光缆各种敷设条件下对环境的适应性,还关系到光缆在其使用寿命期限内传输性能的长期稳定性[1]。实际生产过程中,经常出现光缆外径大小不均的现象,要满足各运营商要求的最小壁厚等情况,壁厚过大过小导致光缆不合格,无法满足运营商的要求。而且同一盘缆芯可能生产多个运营商的光缆成品,不同运营商要求的光缆护套壁厚要求不同。因此如何解决光缆护套壁厚过大过小问题,开发一种可靠性高、稳定性高的护套挤塑自动闭环控制的技术,成为了光缆行业需要解决的首要问题。本文介绍了一种对光缆护套挤塑自动闭环控制的设计与运用,创新性的应用了PID算法来保持护套壁厚稳定,解决了护套壁厚控制问题,保证了护套壁厚合格率。

The sheath mainly plays the role of protecting the optical cable core,to ensure that its internal optical fiber transmission,construction and use process from injury,so that its transmission performance is stable,and the quality of the sheath also directly affects the optical cable tensile,pressure resistance and impact resistance and other mechanical properties.As the last barrier of optical cable protection,the quality of optical cable sheath is not only related to the adaptability to the environment under various laying conditions,but also related to the long-term stability of the transmission performance of optical cable within its service life.In the actual production process,the outer diameter of the optical cable is often uneven,to meet the deviation from the minimum wall thickness of mobile and telecommunications requirements,the wall thickness is too large and too small,resulting in the optical cable is unqualified,cannot meet the requirements of the operators.And the same cable core may produce multiple operators of finished cable products,different operators require the cable sheath wall thickness requirements are different.Therefore,how to solve the problem of the optical cable sheath wall thickness is too large and too small,and to develop a high reliability,high stability of the sheath extrusion automatic closed-loop control technology,has become the primary problem to be solved in the optical cable industry.This paper introduces the design and application of automatic closed-loop control for cable sheath.The innovative application of PID algorithm to keep the sheath wall thickness stable and solve the sheath wall thickness control problem.Ensure the qualified rate of the sheath wall thickness.