CN111824810B - 模块稳健与纸材卷曲之间的介质处理 - Google Patents
模块稳健与纸材卷曲之间的介质处理 Download PDFInfo
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Abstract
本发明题为“模块稳健与纸材卷曲之间的介质处理”。本发明提供了一种用于控制两个传输装置之间的片材中的卷曲的设备,其包括放置在两个传输装置之间的弯曲导流板。将高速空气的薄层施加到弯曲导流板上。高速空气层将具有沿循弯曲导流板的趋势(康达效应),将片材朝向弯曲导流板转向(伯努利效应)。通过将弯曲导流板定位在两个传输装置之间并通过向其施加均匀气流,将产生较低的压力区域。这将使片材的轨迹变平并确保下游传输装置的采集。
Description
相关申请的交叉引用
交叉引用为Rachel L.Tanchak等人的共同转让的于2019年4月23日提交的美国专利申请序列号16/391,418,其标题为“APPARATUS FOR CONTROLLING SHEET FLATNESSUNDER AN IMAGING SYSTEM ROBUST TO MEDIA CURL”(代理人案卷号20180561US01);2019年4月23日提交的Roberto A.Irizarry等人的美国专利申请序列号16/391,422,其标题为“A SYSTEM FOR PREVENTING PAPER JAMS BETWEEN SUBSYSTEM TRANSITIONS”(代理人案卷号20180562US01),两者均以引用方式全文并入本文。
背景技术
本公开涉及在成像系统内的纸材路径传输期间的纸材处理,并且更具体地讲,涉及在纸材路径传输的部分中处理片材卷曲,其中片材不受支撑,诸如两个子系统或模块之间的界面。
静电复印和喷墨数字印刷机包括介质处理构型,该介质处理构型必须与纸材路径的部分竞争,其中在片材传输之间的转换期间片材不受支撑并且受到加工速度、向上卷曲和向下卷曲、片材刚度等的影响。这些还可受到湿度、油墨放置、墨粉/油墨量、晶粒方向、纸材重量等的影响。控制片材轨迹在这样的区域中可变得更加困难,其中禁止片材的顶部表面与常规装置(诸如在传输预熔融或预干燥的图像的情况下的轧辊和导流板)的接触。
目前在喷墨生产印刷方面存在着一个问题,即由于卷曲,在标记传输装置和烘干机模块之间的片材被提升。对该问题的尝试控制是通过使用导流板,该导流板导致来自接触湿图像的导流板的图像缺陷。另外,油墨被转移到导流板上并且变得污染或粘稠,从而在片材接触导流板时导致堵塞。如美国专利8,794,624中所公开的典型的卷曲消除器仅沿过程方向控制卷曲。由于油墨未干燥,因此它不能使片材内的多节点卷曲和局部卷曲变平。
因此,仍需要改善在静电复印和喷墨成像系统中对片材卷曲的管理。
发明内容
因此,为了满足这种需要,公开了一种系统,该系统通过控制其在关键转换期间的轨迹并通过下游传输促进对介质的采集来限制不受支撑的介质长度。该系统包括将弯曲导流板放置在相邻的纸材路径传输装置之间,并且在该弯曲导流板的表面上施加高速均匀气流的薄层以控制片材的前缘。在导流板的弯曲表面上的高速均匀气流的薄层将具有沿循弯曲导流板的趋势(康达效应(Coanda effect)),并且将片材朝向导流板转向(伯努利效应(Bernoulli effect))。通过沿着介质路径定位弯曲导流板并通过向其施加高速均匀气流,将产生较低的压力区域。这将使片材的轨迹变平,使得片材将通过下游真空或静电传输被可靠地接收。
附图说明
通过下文实施例中所述的具体制品或方法以及权利要求书,上述的各种以及其它特征和优点对于本领域的技术人员将是显而易见的。因此,通过对这些具体实施方案的该描述,包括附图(其大致成比例),将更好地理解它们,其中:
图1为片材传输系统的侧视图,其示出了具有片材传递的多个片材传输装置;并且
图2是本公开的局部侧视图,其示出了与弯曲导流板结合使用的片材入口肋和出口肋,以抵消在两个传输装置之间传送的片材中的向上卷曲和向下卷曲。
具体实施方式
为了大体上理解本公开的特征,请参考附图。在附图中,通篇使用类似的附图标号来识别相同的元件。
图1中示出了片材传输系统10的侧视图,其包括朝向第二烘干机模块55上游的烘干机模块50传送的标记传输装置40上的片材11。片材11已突出向上卷曲,并且通过夹带在辊16周围和真空充气室14上方的带12在标记传输装置40上传送。烘干机模块50包括围绕辊24的驱动带20并且具有覆盖真空充气室22的水平部分。第二和下游烘干机模块55具有在其周围拉伸驱动带30的辊34,其中驱动带与真空充气室32连通。包括下导流板18和上导流板19的引导构件定位在标记传输装置40和烘干机模块50之间,以有利于标记传输装置和第一烘干机模块之间的片材转移。在该转换期间控制片材11的轨迹并防止片材提升是困难的,因为使用常规方法(诸如辊和导流板)可引起问题。例如,片材包括可接触上导流板19并导致图像缺陷的湿墨图像。如图所示,片材11在传输时紧靠带12保持,但向上卷曲的前缘部分除外,在一些情况下,当其从标记传输装置40转换到烘干机模块50时,其可接触上导流板19。如果片材在到达下游传输系统50之前命中上导流板19,则该向上卷曲可导致纸材堵塞。如果片材中存在向下卷曲,则其可进入标记模块40和导向构件之间的间隙中。
根据本公开,公开了一种改进的设备实施方案,其使用康达效应和伯努利效应来控制传输介质中的卷曲。在图2中,示出了介质处理设备60,其通过分别使用气刀19,弯曲导流板62以及入口肋64和出口肋66来控制在喷墨印刷机环境中在标记传输装置70和烘干机传输装置80之间在箭头67的方向上传送的不受支撑长度的介质11的轨迹。这通过在箭头68的方向上由喷嘴19在片材11下方的弯曲导流板62上形成高速空气薄层来实现。高速气流的控制可基于介质类型和重量来限定。将具有沿循弯曲导流板的趋势(康达效应)的高速空气层将使片材朝向导流板62转向(伯努利效应)。通过沿着介质纸材路径定位弯曲导流板62并通过向其施加均匀的气流,空气将沿循导流板62的弯曲表面,并且片材11将沿循。此外,在其中具有开口的入口肋64用于提供向下卷曲的介质的边界条件,同时允许气流在肋之间通过以增强向上卷曲的片材11的初始采集。包括出口肋66以提供向下卷曲的介质的边界条件,同时在将介质传递至另一个传输装置期间提供轨迹。
在重演中,公开了一种用于在两个传输装置之间转换介质的改进的设备,该两个传输装置采用定位在相邻纸材路径传输装置之间的弯曲导流板。在弯曲导流板的表面上施加均匀的高速气流。由于康达效应,高速空气层将跟沿循弯曲导流板的曲率,并且介质将朝向弯曲导流板转向(伯努利效应)。在相邻传输装置之间引入弯曲导流板并向其施加均匀的高速气流将导致产生较低的压力区域,该较低的压力区域将使介质的轨迹变平并确保介质进入下游传输装置中。
本文最初呈现的并且可修改的权利要求涵盖本文所公开的实施方案和教导内容的变型、替代形式、修改形式、改进形式、等同形式和基本等同形式,包括目前不可预见的或未被理解的那些,并且例如可由申请人/专利人和其他人产生。除非权利要求中具体叙述,否则权利要求的步骤或组分不应暗示或从说明书或任何其它权利要求中引入到任何特定的顺序、数量、位置、尺寸、形状、角度、颜色或材料。
Claims (18)
1.一种用于控制在相邻传输装置之间的纸材路径中传送的介质中的卷曲的设备,包括:
用于将介质传送至下游装置的第一传输装置;
在所述第一传输装置的下游并且与所述第一传输装置串联的第二传输装置;
定位在所述第一传输装置和第二传输装置之间的半圆形构件;
邻近半圆形构件定位的气流装置;
入口肋,所述入口肋附接到所述半圆形构件并且在其中具有开口,所述开口适于提供用于向下卷曲的介质的边界条件,同时允许来自所述气流装置的气流在所述入口肋之间通过以增强具有向上卷曲的介质的初始采集;
出口肋,所述出口肋附接到所述半圆形构件并且被构造成提供用于向下卷曲的介质的边界条件,同时在将所述介质从所述第一传输装置传递至所述第二传输装置期间提供轨迹;并且
其中所述气流装置被构造成施加沿循所述半圆形构件的高速空气层以将所述介质朝向所述半圆形构件转向,从而从所述介质的前缘移除卷曲。
2.根据权利要求1所述的设备,其中所述入口肋和出口肋由导流板构成。
3.根据权利要求1所述的设备,其中所述第一传输装置是标记传输装置并且所述第二传输装置是烘干机传输装置。
4.根据权利要求3所述的设备,其中所述第一传输装置的下游的所述第二传输装置是真空传输装置。
5.根据权利要求3所述的设备,其中所述第一传输装置的下游的第二传输装置是静电传输装置。
6.根据权利要求1所述的设备,其中所述气流装置的控制基于所述介质的类型和重量。
7.根据权利要求1所述的设备,其中所述半圆形构件为导流板。
8.一种用于控制在喷墨装置中的标记传输装置和烘干机模块之间的纸材路径中传送的介质中的向上卷曲和向下卷曲的布置,包括:
用于沿下游方向传送介质的标记传输装置;
至少一个烘干机模块,其在所述标记传输装置的下游并且与所述标记传输装置串联,并且适于从所述标记传输装置接收介质;
定位在所述标记和所述至少一个烘干机模块之间的弯曲构件;
邻近所述弯曲构件定位的气流装置;
入口肋,所述入口肋相对于所述弯曲构件布置并且在其中具有开口,所述开口被构造成提供用于向下卷曲的介质的边界条件,同时允许来自所述气流装置的气流在所述入口肋与所述弯曲构件的表面部分之间通过以增强具有向上卷曲的介质的初始采集;
出口肋,所述出口肋相对于所述弯曲构件被构造以提供用于向下卷曲的介质的边界条件,同时在将所述介质从第一传输装置传递至第二传输装置期间提供轨迹;并且
其中所述入口肋和出口肋各自包括水平部分,所述水平部分被构造成在引导向下卷曲的介质进入和离开所述弯曲构件方面提供帮助,并且其中所述气流装置被构造成施加沿循所述弯曲构件的高速空气层以将所述介质朝向所述弯曲构件转向,从而从所述介质的前缘移除卷曲。
9.根据权利要求8所述的布置,其中所述入口肋和出口肋附接到所述弯曲构件。
10.根据权利要求8所述的布置,其中所述出口肋被构造成允许来自所述气流装置的空气流过其所述水平部分。
11.根据权利要求8所述的布置,其中所述标记传输装置和所述至少一个烘干机模块利用来自真空源的真空在其上捕获介质。
12.根据权利要求8所述的布置,其中所述弯曲构件为导流板。
13.根据权利要求8所述的布置,其中所述弯曲构件为圆柱形。
14.根据权利要求8所述的布置,其中所述弯曲构件为半圆形。
15.一种用于控制在相邻传输装置之间的纸材路径中传送的片材中的卷曲的设备,包括:
用于将片材传送至下游装置的第一传输装置;
在所述第一传输装置的下游并且与所述第一传输装置串联的第二传输装置;
定位在所述第一传输装置和第二传输装置之间的弯曲构件;
入口肋,所述入口肋在其中具有开口,所述开口被构造成提供用于向下卷曲的片材的边界条件,同时允许气流在所述入口肋之间通过以增强具有向上卷曲的片材的初始采集;以及出口肋,所述出口肋被构造成提供用于向下卷曲的片材的边界条件,同时在将所述片材传递至所述第二传输装置期间提供轨迹,并且其中所述入口肋和出口肋中的每一个包括其一部分,所述一部分延伸远离与所述第一传输装置和第二传输装置串联的所述弯曲构件,邻近所述弯曲构件定位的气流装置;并且
其中所述气流装置被构造成施加沿循所述弯曲构件的高速空气层以将所述片材朝向所述弯曲构件转向,从而从所述片材的前缘移除卷曲。
16.根据权利要求15所述的设备,其中所述弯曲构件为导流板。
17.根据权利要求15所述的设备,其中延伸远离与所述第一传输装置和第二传输装置串联的所述弯曲构件的所述入口肋和出口肋的所述一部分在其中包括开口。
18.根据权利要求17所述的设备,其中所述入口肋和出口肋被构造成通过在转换期间控制所述片材的轨迹并且同时允许所述第二传输装置安全地获取所述片材来限制片材的不受支撑的长度。
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