公开(公告)号：US3881646A

公开(公告)日：1975-05-06

申请号：US38823373

申请日：1973-08-14

Applicant: POLYGRAPH LEIPZIG

Inventor： NITZSCHE ERHARD ,  ZIRNSTEIN PETER ,  SCHEBIELLA ERWIN ,  KORNER SIEGFRIED ,  WEISE JOACHIM ,  SCHLAUGAT HORST ,  RICHTER WOLFGANG

IPC: B41F21/08 ,  B65H5/08 ,  B65H29/04 ,  B26F3/00

CPC classification number: B41F21/08 ,  B65H5/085 ,  B65H29/041 ,  B65H29/044 ,  B65H2601/321 ,  Y10T225/321

Abstract: A printing apparatus wherein imprinted sheets are provided with cuts surrounding selected areas of the sheets and wherein the cutouts corresponding to such selected areas are thereupon bodily separated from the remnants of the respective sheets during travel between two rotary drums has a sheet transporting unit wherein two endless chains entrain a succession of sheet gripping devices so that the gripping devices engage successive sheets at a station located upstream of the drums and deposit the remnants of sheets downstream of the drums. The gripping devices are normally guided by rails which define therefor an endless path. A portion of each chain and portions of the rails can be pivoted between an operative position in which the endless path is completed and an inoperative position in which the endless path is interrupted. The pivoting takes place about an axis which is parallel with and adjacent to the axis of one of the drums, and such drum moves sideways and away from the other drum in response to pivoting of the movable portions of rails so as to afford access to the space between the drums. The system for moving the portions of rails employs a worm drive having a fixedly mounted worm wheel, a worm which meshes with the worm wheel and is secured to a frame for movable portions of the rails, and a reversible motor which can rotate the worm wheel in two directions.

Abstract translation: 一种印刷装置，其中印刷片材设置有围绕片材的选定区域的切口，并且其中在两个旋转鼓之间的行进期间，对应于这样选择的区域的切口与各个片材的残余物在身体上分离，具有片材传送单元，其中两个环形 链夹带一系列片夹紧装置，使得夹持装置在位于鼓的上游的站处接合连续的片材，并将片材的残留物沉积在鼓的下游。 夹持装置通常由轨道引导，轨道限定无限路径。 每个链条的一部分和轨道的一部分可以在完成环形路径的操作位置和环形路径被中断的非工作位置之间枢转。 枢转围绕与一​​个滚筒的轴线平行并相邻的轴线发生，并且这种滚筒响应于轨道的可移动部分的枢转而侧向移动并远离另一个滚筒，以便提供对 鼓之间的空间。 用于移动轨道部分的系统采用具有固定安装的蜗轮的蜗杆驱动器，与蜗轮啮合的蜗杆并固定到用于轨道的可移动部分的框架，以及可旋转的蜗轮 在两个方向。