摘要
目的研究三列中封全自动制袋机牵引装置对膜料偏移的影响规律。方法基于有限元软件Ansys对膜料跑偏问题进行数值分析,通过对牵引装置的显式动力学分析,确定了膜料在上、下胶辊的摩擦驱动力作用下的应力、变形及位移。结果在传送过程中,上、下胶辊的轴线不平行以及膜料与胶辊接触面摩擦因数的不均匀都会引起膜料的偏移,且膜料向上、下胶辊轴线间隙大的一侧或摩擦因数小的位置偏移。结论上、下胶辊的轴线不平行是引起膜料偏移的主要原因,当轴线两端的高度差h=0.5 mm时,在膜料传输的初始时刻就产生了最大约2 mm的偏移,而且偏移量会随着时间呈非线性增大。
Objective To investigate the deviation of the film drawn by rubber rollers in automatic bag making machine. Methods The stress, deformation and displacement of the film were calculated based on the explicit dynamic analysis of the to- wing apparatus using the FEM method. Results The results showed that both the nonparallelism of the rollers and the inhomoge- neity of the friction coefficients between the film and roller could cause the film deviation. The film skewed to the side of larger gap between the rollers, or to the side of smaller friction coefficient. Conclusion In comparison, the nonparallelism of the roll- ers was more important to the film deviation. When the height difference between the ends of the central axis h was 0.5 mm, the film deviation could reach almost 2 mm at the initial moment, and the deviation increased nonlinearly as the time increased.
出处
《包装工程》
CAS
CSCD
北大核心
2014年第5期41-45,72,共6页
Packaging Engineering
基金
广东省教育部产学研结合项目(2012B091000006)
关键词
三列中封
制袋机
拉模跑偏
有限元分析
three-row-middle-envelope
bag making machine
film deviation
finite element analysis
