COMAS-A1型切丝机下排链传动系统的改进

Modification of transmission system for bottom band in COMAS-A1 tobacco cutter

为解决COMAS-A1型切丝机因下排链卡滞故障造成耐磨板变形及铜排链损坏等问题,对切丝机下排链传动系统进行了改进。将耐磨板前段由直线型改为直齿型,增加主动辊辊齿宽度;将弧度护板的平滑圆弧面改为凹槽面,通过加装紧固螺栓提高耐磨板的固定强度;消除下排链与耐磨板间的空隙,避免铜排链链节与耐磨板产生摩擦。对改进后主动辊和弧度护板进行有限元仿真分析,结果显示两者所受最大应力和应变量均能满足生产需求。以厦门烟草工业有限责任公司生产的“七匹狼”等卷烟为对象进行测试,结果表明:改进后COMAS-A1型切丝机下排链发生卡滞故障频次由改进前的0.55次/百批次降低为0,节约备件及维修费用约3.40万元/年。该技术可为实现制丝设备降本增效提供支持。

In order to prevent the bottom band from stagnation that causes wear strip deformation and compression band damage,the transmission system of bottom band in COMAS-A1 tobacco cutter was modified as follows:changing the front section of the wear strip from a flat type to a tooth type,increasing the tooth width of the drive roller,changing the smooth arc surface of arc guard plate to grooved surface,adding the number of fastening bolts to fasten the strips more tightly,and eliminating the clearance between the bottom band and the wear strips to avoid the friction between them.The results of finite element simulation analysis of the modified drive roller and arc guard plate verified that they were capable of production requirements.The modified system was tested with tobacco blend of“Septwolves”on a COMAS-A1 tobacco cutter in Xiamen Tobacco Industrial Limited Corporation,the results showed that the frequency of bottom band stagnation reduced from 0.55 times per hundred batches to 0 and about 34 thousand RMB yuan for spare parts and maintenance costs could be saved per year.This technology provides a support for the cost decreasing and efficiency increasing of primary processing equipment.