基于缓冲对刀策略的自动化铲板组件设计

针对目前化纤纺丝生产中对喷丝板进行自动化铲板的需求,首先,提出一种自动铲板方法并设计了具有串并联弹簧缓冲对刀结构的铲板组件;然后,通过规划铲刀组件的对刀运动参数,建立组件的动力学模型,确定缓冲弹簧的刚度系数;同时对铲刀组件的对刀运动进行Adams仿真,验证运动参数设计和串并联弹簧缓冲对刀结构设计的正确性;最后,搭建了自动化铲板实验平台,开展对刀阶段的接触力测量实验。研究结果表明,实际对刀时的受力趋势与仿真结果一致,铲板组件可有效清洁喷丝板面,且随着铲刀接触力的增大铲板效果越明显,该研究为进一步开展自动化铲板系统的设计提供了技术参考。

Design of automatic scraping component based on buffering strategy for tool setting

In response to the current demand for automatic spinneret scraping in chemical fiber spinning production, an automatic scraping method was proposed, and a scraper assembly with a tool setting buffering structure of series-parallel spring was designed. By planning the tool setting motion parameters and establishing the dynamic model of the scraper assembly, the stiffness coefficient of the springs was determined. The correctness of the motion parameter design and the buffering structure design was verified by Adams simulation of the tool setting motion. Consequently, an automatic scraping test platform was set up and the measurement experiments of the contact force between the scraper and the spinneret were performed at the tool setting stage. The measurement results show that the variation trend of the contact force in the actual tool setting motion is consistent with that in Adams simulation. In addition, it is proved by experiment that the scraper assembly can clean the spinneret surface effectively, and the scraping effect becomes more obvious as the contact force increases. The results acquired in this research is expected to be helpful for refined design of the automatic scraping system as a technical reference.