SD5切丝机进刀机构的改进

为解决SD5切丝机切丝刀片因单次进刀量不固定而导致刀片和磨刀砂轮磨损快等问题，对进刀机构进行了改进。通过将回转体上的滑块槽改为固定轴，使滑块固定在回转体上并随销轴转动；在进给杆上加工滑块槽，使滑块在槽中滑动时带动回转体旋转；由回转体驱动推刀块运动完成进刀，实现切丝过程中单次进刀量恒定。以青岛卷烟厂使用的2台SD504切丝机为对象进行测试，结果表明:改进后刀片和砂轮平均使用寿命分别延长31.2%和7.2%。该技术可为提高SD5系列切丝机生产稳定性提供支持。 

Modification of knife feed mechanism in SD5 tobacco cutter

In order to feed the knife blade at a consistent rate, and thereby to rationalize the wear of knife blade and grind wheel, the knife feed mechanism in tobacco cutter SD5 was modified. The slide block groove on the revolving body is replaced by a spindle, the slide block is fixed on the revolving body and rotates along with the pin shaft. Cutting a slide block groove on the feed rod, the sliding of the slide block in the groove and drives the revolving body to rotate further drive the blade pusher to complete a knife feeding cycle with a constant feeding rate. Two SD504 tobacco cutters were modified and tested in Qingdao Cigarette Factory. The results showed that the average working life of knife blade and grind wheel prolonged by 31.2% and 7.2% respectively. This technology provides a support for promoting the production stability of SD5 series tobacco cutters.