基于伺服控制的可变周期送纸控制方法研究
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摘要
针对纸箱数码印刷机因采用固定周期送纸方式而导致印刷效率与品质下降的问题,对固定周期送纸方式对印刷效率与品质的影响进行了研究,对可变周期送纸控制策略进行了归纳,提出了基于伺服控制的可变送纸周期实现纸板短间距传送的改进方法。首先优化设计了针对短间距传送的高精度机械凸轮,然后根据凸轮参数、间距参数以及各运动轴的运动规律计算出了其运动曲线的坐标参数,最后设计出了各运动轴最优的电子凸轮运行曲线;通过实验平台测试验证了该改进方法的可行性和实用性。研究结果表明:不同的进纸长度对应不同送纸周期,且间距相同;该改进方法能改善喷墨打印质量,实现纸板短间距传送,提升数码印刷的生产效率。
Aiming at the problem of decline in printing efficiency and reduction in printing quality caused by using fixed feeding cycle of carton digital printing machine, the influence of the fixed feeding cycle mode on the printing efficiency and quality was studied,and the variable feeding cycle control strategy was summarized. An improved method based on servo control for variable feeding cycle to realize short distance transmission of cardboard was proposed. Firstly, a high-precision mechanical cam for short distance transmission was optimized. Then, the coordinate parameters of the motion curve were calculated according to the cam parameters, the distance parameters and the movement rules of each movement axis. Finally, the optimal electronic cam curve for each motion axis was designed. The feasibility and practicability of the improved method were verified through the experimental platform test. The results indicate that different paperboards correspond to different feed cycles and the spacing is the same. The control method can improve the quality of inkjet printing, realize the short distance transmission of cardboard, and enhance the production efficiency of digital printing.
Aiming at the problem of decline in printing efficiency and reduction in printing quality caused by using fixed feeding cycle of carton digital printing machine, the influence of the fixed feeding cycle mode on the printing efficiency and quality was studied,and the variable feeding cycle control strategy was summarized. An improved method based on servo control for variable feeding cycle to realize short distance transmission of cardboard was proposed. Firstly, a high-precision mechanical cam for short distance transmission was optimized. Then, the coordinate parameters of the motion curve were calculated according to the cam parameters, the distance parameters and the movement rules of each movement axis. Finally, the optimal electronic cam curve for each motion axis was designed. The feasibility and practicability of the improved method were verified through the experimental platform test. The results indicate that different paperboards correspond to different feed cycles and the spacing is the same. The control method can improve the quality of inkjet printing, realize the short distance transmission of cardboard, and enhance the production efficiency of digital printing.
引文
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[9] 刘金辉,刘雄心,刘军,等.四边封口包装机自动对标装置的设计[J].包装与食品机械,2017(3):30-33.
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[13] SUN D. Position Synchronization of Multiple Motion Axes with Adaptive Coupling Control[J]. Automatica, 2003,39(6):997-1005.
[2] 柳玲.数码印刷的优势与质量控制[J].印刷质量与标准化,2008(8):51-53.
[3] 袁清珂,石亚平,张明天.基于GA纸箱印刷机送纸机构的优化设计[J].包装工程,2009,30(11):46-48.
[4] 崔晓萌.数字印刷图像质量检测与质量控制工程理论与应用研究[D].广州:华南理工大学轻工与食品学院,2013:34-37.
[5] 范丽娟.有关数码印刷产品质量的控制策略探讨[J].印刷质量与标准化,2012(10):40-41.
[6] 石利琴.影响喷墨印刷质量的关键因素分析[J].包装工程,2005,26(4):45-47.
[7] 罗红莲,褚庭亮,李家祥,等.数码印刷产品质量分析与控制[J].包装工程,2006,27(1):81-83.
[8] 王程,贺炜.凸轮结构CAD/CAM研究的回顾与展望[J].机械传动,2008,32(6):119-123.
[9] 刘金辉,刘雄心,刘军,等.四边封口包装机自动对标装置的设计[J].包装与食品机械,2017(3):30-33.
[10] 孙桓,傅则绍.机械原理[M].4版.北京:高等教育出版社,1989.
[11] LORENZ R D, SCHMIDT P B. Synchronized Motion Control for Process Automation[C]. IEEE Conference Record of the 1989 Industry Applications Society Annual Meeting, San Diego, CA,USA.1989.
[12] PAYETTLE K. The virtual shaft control algorithm for synchronized motion control[C]. Proceedings of the American Control Conference, Philadelphia, Pennsylvania. 1998.
[13] SUN D. Position Synchronization of Multiple Motion Axes with Adaptive Coupling Control[J]. Automatica, 2003,39(6):997-1005.