皮带复卷机-4复卷参数(译).doc

WINDING PARAMETERS 复卷参数复卷参数1.OPERATING INSTRUCTIONS 操作说明操作说明4WINDING PARAMETERS 复卷参数复卷参数4.1Roll quality 纸卷质量纸卷质量The rolls made with a winder or a rewinder must withstand package handling, storage, transportation and other extended handling. In addition, printing paper rolls require good runability in the printing machine.复卷或者再复卷出的纸卷都必须经过打包处理，贮存，运输和复卷或者再复卷出的纸卷都必须经过打包处理，贮存，运输和其它延伸出来的处理此外，印刷用纸卷要求要有很好的运行能力其它延伸出来的处理此外，印刷用纸卷要求要有很好的运行能力在印刷机上在印刷机上A good roll which meets the previously mentioned requirements is such, that its tightness, from the core to the surface, is even and preferably decreases evenly. All sharp changes in tightness and hardness negatively affect the characteristics of the roll. Furthermore, a good roll has straight ends, the core is as wide as the roll and in the middle of the roll.一个好的纸卷要满足前面提到的要求那样，它的紧度，从纸芯一个好的纸卷要满足前面提到的要求那样，它的紧度，从纸芯到表面，平坦最好是均匀地缩短，在紧度和硬度上所有的突然变化到表面，平坦最好是均匀地缩短，在紧度和硬度上所有的突然变化都会对纸卷的规格参数造成不良影响。

此外，一个好的纸卷端面要都会对纸卷的规格参数造成不良影响此外，一个好的纸卷端面要笔直，纸芯的宽度和纸卷一致并在纸卷的中间笔直，纸芯的宽度和纸卷一致并在纸卷的中间The figure shows the change in the radial compression pressure, representing the roll tightness as a function of the roll radius.WINDING PARAMETERS 复卷参数复卷参数图表给出在压力压缩时径向的变化，表示纸卷紧度与纸卷半径图表给出在压力压缩时径向的变化，表示纸卷紧度与纸卷半径的一个函数图的一个函数图Shape of a good roll structure 一个好纸卷的结构外形一个好纸卷的结构外形4.2Factors affecting the roll tightness and quality影响纸卷紧度和质量的因素影响纸卷紧度和质量的因素4.2.1The factors affecting the roll tightness during winding在复卷期间影响纸卷紧度的因素在复卷期间影响纸卷紧度的因素●Winding pressure in the nip between the drum and the roll复卷时在底辊和纸卷间的压区压力复卷时在底辊和纸卷间的压区压力●Strength difference between the drum and the set of belt rolls底辊和皮带辊之间的压差底辊和皮带辊之间的压差●Web tension纸幅张力纸幅张力●Running speed, acceleration and decelerationWINDING PARAMETERS 复卷参数复卷参数运行速度，加速和减速运行速度，加速和减速4.2.2Factors independent of the winder复卷机以外的因素复卷机以外的因素●Core characteristics纸芯品质纸芯品质●Paper characteristics纸质纸质●Transport and storage运输和贮存运输和贮存●Influencing factors in extended handling延伸出来的处理中的影响因素延伸出来的处理中的影响因素4.3Rider roll relief压纸辊减压压纸辊减压Winding pressure is controlled by adjusting the loading of the rider roll as the roll diameter increases.复卷压力控制由压纸辊根据纸卷的直径增加来调节加载复卷压力控制由压纸辊根据纸卷的直径增加来调节加载The rider roll is used in the initial stages of winding to give extra load to the rolls. In the later stages of winding, the rider roll load is relieved. In the final stages, the rider roll keeps the rolls in place.压纸辊被用于复卷初期给纸卷以额外的负荷，在复卷的后期，压纸辊被用于复卷初期给纸卷以额外的负荷，在复卷的后期，压纸辊负载被解除，在末期，压纸辊保持纸卷在合适的位置。

压纸辊负载被解除，在末期，压纸辊保持纸卷在合适的位置Rider roll relief is logically controlled and the rider roll load changes WINDING PARAMETERS 复卷参数复卷参数along the programmed curve when the roll diameter increases. The rider roll beam is equipped with load cells which measure the load between the rider roll and the rolls. On the basis of these measurements, the cylinder pressure of the rider roll is controlled so the load of the rider roll is in accordance with the selected program.压纸辊减压是逻辑控制的并且当纸卷直径增加时压纸辊负载变压纸辊减压是逻辑控制的并且当纸卷直径增加时压纸辊负载变化是按着编程曲线的，压纸辊的横梁上安装有能够测量压纸辊和纸化是按着编程曲线的，压纸辊的横梁上安装有能够测量压纸辊和纸卷之间负载的测压元件，在这些测量基础上，控制压纸辊汽缸压力卷之间负载的测压元件，在这些测量基础上，控制压纸辊汽缸压力使得压纸辊上的负载与选择的程序一致。

使得压纸辊上的负载与选择的程序一致The pressure relief program for the rider roll must be selected in accordance with the paper quality and the final diameter of the set.压纸辊的减压程序的选择一定要与纸的质量和设置的最终直径压纸辊的减压程序的选择一定要与纸的质量和设置的最终直径一致If there are large variations in the cross directional thickness profile of the paper, and an excessive rider roll load causes creasing on the rolls, or the winder has continuous breaks, it is necessary to use a lighter rider roll program.如果在相交方向上纸的侧面厚度存在大的变化，并且过分的压如果在相交方向上纸的侧面厚度存在大的变化，并且过分的压纸辊负载在纸卷上引起折痕，或者复卷机连续断纸，这时有必要使纸辊负载在纸卷上引起折痕，或者复卷机连续断纸，这时有必要使用一个轻一些的压纸辊程序。

用一个轻一些的压纸辊程序WINDING PARAMETERS 复卷参数复卷参数The curve shows the dependence of the cylinder pressure on the roll diameter.这个曲线表示汽缸压力与纸卷直径的关系这个曲线表示汽缸压力与纸卷直径的关系4.4Tension in the set of belts皮带张力皮带张力After the roll diameter reaches approx. 530mm (20.9 in), a portion of the roll weight will start to transfer evenly onto the belt support. Changing the belt tension influences the extent of the support strength. Belt tension is controlled by adjusting the pressure in the hydraulic cylinders which push the belt rolls apart.在纸卷直径大约达到在纸卷直径大约达到 530mm (20.9 in)以后，部分纸卷的重量以后，部分纸卷的重量开始均匀地转移到皮带支撑上，变化的皮带张力会影响支撑力的限开始均匀地转移到皮带支撑上，变化的皮带张力会影响支撑力的限度，皮带张力由推开皮带辊的液压缸调节压力来控制。

度，皮带张力由推开皮带辊的液压缸调节压力来控制WINDING PARAMETERS 复卷参数复卷参数Tension in the set of belts 皮带张力皮带张力The rear drum nip load can be maintained at a required value with the belt tension because increasing the belt tension will press the roll against the rear drum.后底辊的压区负荷通过皮带张力能够被保持在一个需要的值上，后底辊的压区负荷通过皮带张力能够被保持在一个需要的值上，因为增加皮带张力会使纸卷紧压向后底辊因为增加皮带张力会使纸卷紧压向后底辊The belt tension has a reverse effect on the belt roll nip load, i.e. if the belt is tightened, the nip load decreases and vice versa.皮带张力可以取消在皮带辊上的压区负荷影响，即，如果皮带皮带张力可以取消在皮带辊上的压区负荷影响，即，如果皮带张紧，压区负荷会减小，反之亦然。

张紧，压区负荷会减小，反之亦然When the belts start to support the roll, the nip loads are mainly determined on the basis of the roll mass and the supporting。