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1. 发明授权

US4690054A Sheet feed drum for rotary presses 失效
标题翻译：旋转印刷机的送纸滚筒
公开(公告)号：US4690054A
公开(公告)日：1987-09-01
申请号：US836007
申请日：1986-03-04
申请人： Bert Cappel , Karl L. Knapp , Adolf Jung
发明人： Bert Cappel , Karl L. Knapp , Adolf Jung
IPC分类号： B65H5/12 , B41F21/00 , B41F21/04 , B41F22/00 , B41F30/00 , B41F21/10 , B41F29/02
CPC分类号： B41F22/00
摘要： A sheet feed drum for transferring sheets in a rotary printing press wherein the drum other contour is provided with an ink-repellent coating and two circumferentially spaced front and rear drum edges defining a duct therebetween which accommodates a sheet gripper system. The ink-repellent coating supporting a netting-like fabric relatively loosely thereon prevents any smearing of a freshly printed underside of a sheet during sheet feed on the drum while the sheet is engaged by the gripper system. Starting at the front edge of the drum, the outer contour of the drum is constructed in the form of a continuously increasing signal merging into a fixed drum radius whereby the netting-like fabric is contactable by the freshly printed underside of the sheet on the sprial first substantially flatly behind the front edge of the drum and then in any subsequent angle of rotation of the drum without the sheet tangent ever being bent or creased.
摘要翻译：一种用于在旋转印刷机中转印纸张的送纸滚筒，其中滚筒的其它轮廓设置有拒墨涂层和两个周向间隔开的前鼓轮边缘和后鼓轮边缘，其在其间限定了容纳片材夹持系统的导管。相对松动地支撑网状织物的防墨涂层防止了当纸张与夹具系统接合时在片材进给期间纸张的新鲜印刷的下侧的任何污迹。从鼓的前边缘开始，滚筒的外轮廓以不断增加的信号的形式被构造成合并到固定的滚筒半径中，由此网状织物可以通过新鲜印刷在纸上的下面首先基本上平坦地位于滚筒的前边缘之后，然后在滚筒的任何随后的旋转角度中，而不会使片材切线弯曲或折皱。

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