滤棒成型机丝束恒张力控制系统的设计

Design of constant tow tension control system for filter rod maker

为解决丝束带从丝束包拉出过程中内部张力变化导致的滤棒吸阻、圆周等指标波动问题,采用闭环伺服控制原理,设计了丝束恒张力控制系统。系统由伺服电机、张力检测装置、丝束控制装置、附加开松器、控制系统、显示屏等组成。张力检测装置检测运行中丝束带张力变化情况,与来自成型机的速度同步信号进行比较,控制丝束控制装置转速,使丝束带内张力保持恒定。将该系统应用于ZL26C滤棒成型机,2个月的测试显示:改进后滤棒吸阻标准偏差降低20.62%,滤棒圆周标准偏差降低50.00%,表明该系统可显著提升滤棒质量稳定性。

In order to reduce the fluctuations of draw resistance and circumference of filter rods caused by the variation of tension in the tow generated when it is pulled out of an opened two bale,a constant tension control system was designed on the basis of closed-loop servo control principle.The system consists of a servo motor,a sensor,a tow control device,an additional tow opener,a control system and a display screen.The sensor monitors the tension in the running tow,compares it with the synchronized speed signal coming from filter rod maker,and controls the rotation speed of the tow control device to maintain a constant tow tension.The system was applied to ZL26 C filter rod maker,and the results of a two-month test showed that the standard deviation of draw resistance of filter rods reduced by 20.62%and that of circumference of filter rods decreased by50.00%,which indicated that the system significantly promoted the consistency of filter rod quality.