Rewinding machines are used in the paper converting industrial sector to unroll paper veils from large source reels and wind them around smaller rolls, for the production of paper logs to be used in household activities. Many different types of rewinding machine exist, and they are mostly based on stapling devices which automatically unroll a large coil of paper, roll it up around a new log, stop the veil allowing it to be torn off, unload the completed paper log, and reload a new paper core to be rolled up. Winding units generally include a primary and a secondary roller, supplying the desired rotational speed for winding, and a pressure unit consisting of a pressure roller in contact with the paper log being rolled up, which assures adequate containment and avoids the paper log to escape. All known systems have some mechanical limitations, mainly due to the contact of the pressure roller with the paper log, causing instabilities and vibrations, particularly when working with soft paper veils. This limits the maximum possible winding speed. The aim of this paper is it to present a detailed kinematic analysis of a novel pressure unit which overcomes the aforementioned limitation.

中文翻译：

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一种新型的复卷机系统的运动学分析

复卷机用于造纸工业部门，用于从大型卷轴上展开纸纱并将其绕在较小的纸卷上，以生产用于家庭活动的纸原木。存在许多不同类型的复卷机，它们主要基于装订设备，该装订设备会自动展开一大卷纸，将其卷成新的原木，然后停止面纱以将其撕下，卸下已完成的原木，重新加载要卷起的新纸芯。卷绕单元通常包括一个主辊和一个辅助辊，为卷绕提供所需的旋转速度；以及一个压力单元，该压力单元由一个与所卷起的纸卷筒接触的压力辊组成，这确保了足够的密封性并避免了纸卷散开。所有已知的系统都有一些机械限制，主要是由于压力辊与原纸接触，导致不稳定性和振动，尤其是在使用柔软的纸幕时。这限制了最大可能的绕线速度。本文的目的是提出一种克服上述局限性的新型压力装置的详细运动学分析。