Device for infeeding a web

Information

  • Patent Grant
  • 6708859
  • Patent Number
    6,708,859
  • Date Filed
    Monday, May 6, 2002
    22 years ago
  • Date Issued
    Tuesday, March 23, 2004
    20 years ago
Abstract
A paper web draw-in device for a rotary printing press includes a plurality of guides that support a web draw-in cable or chain. The guides are adjustable in a direction transverse to the web conveying direction. Different positions of these guides can be set in response to the widths of various webs being drawn into the rotary printing press.
Description




FIELD OF THE INVENTION




The present invention is directed to a device for drawing in a web in a printing press. A web draw-in device is supported by a guide. This guide can be moved to divert the draw-in device transversely with respect to the conveying direction of the web.




BACKGROUND OF THE INVENTION




It is generally known to fasten or to mount guide devices for paper web draw-in devices, for example guide devices for paper web draw-in devices such as cables, belts or roller chains to the inside of at least one of the lateral frames of a web-fed rotary printing press. For example, in DE-OS 22 41 127 the guide devices are fastened to the inside of the lateral frame by the use of forked supports.




SUMMARY OF THE INVENTION




The object of the present invention is directed to providing a device for drawing in a web.




The object is attained in accordance with the invention by providing guide devices that support the web draw-in device. These guide devices are supported so that they can move transversely with respect to the conveying direction of the web.




The advantages which can be achieved by the present invention lie, in particular, in creating a guide device for paper web draw-in devices which can be adapted to the width of the roll changer. In the course of this, holders for the guide devices can be adjusted in such a way that the alignment of the guide devices and thus of the paper web draw-in devices is in agreement with the paper web width.











BRIEF DESCRIPTION OF THE DRAWINGS




A preferred embodiment of the present invention is represented in the sole drawing and will be described in greater detail in what follows.




The sole drawing show a perspective representation of a device in accordance with the present invention for the axial adjustment of guide devices for paper web draw-in devices.











DESCRIPTION OF THE PREFERRED EMBODIMENTS




Rollers


03


,


04


, which may be, for example, paper guide rollers, are rotatably seated between lateral frames


01


,


02


of a web-fed rotary printing press. Spaced-apart guide rails


08


,


09


, which point in a direction parallel to the direction A of the axes of rotation


06


,


07


of rollers


03


,


04


, are fastened on at least one lateral frame


02


. The guide rails


08


,


09


can, for example, consist of C-shaped profiled sections and, as depicted in the sole drawing, can also be embodied traverse-like between both lateral frames


01


,


02


.




Slidable crossheads, which are not specifically represented in the sole drawing, are provided with threaded bores. These slidable crossheads are arranged in the C-shaped profiled sections of the guide rails


08


,


09


.




A holder


11


, which can be infinitely variably displaced in the axis parallel direction A, is supported by the guide rails


08


,


09


. Holder


11


supports one or several guide devices


12


, such as, for example, guide rollers


12


, which guide rollers


12


are used for receiving or diverting a paper web draw-in device


13


. The paper web draw-in device


13


may be, for example, a belt system which can be pulled forward and back.




The holder


11


can consist of, for example, a plate which has brackets


14


,


16


facing in the axis-parallel direction A, and through which the plate-shaped holder


11


is in connection, by the use of holding screws, which are not specifically represented, with the slidable crossheads of the guide rail


08


,


09


. In this way, the paper draw-in devices


13


are arranged to be slidable in the axis-parallel direction A in respect to a lateral edge of a paper web, not represented, which is to be drawn in.




The draw-in device


13


is arranged, in a first position, in the vicinity of a lateral edge of a first web of a first width, and the draw-in device


13


can be arranged, in a second position, in the vicinity of a lateral edge of a second web of a second width.




Each of the holders


11


can receive the guide devices


12


for one or for several paper draw-in devices


13


, as shown in the sole drawing figure.




The guide devices


12


can also consist of curved C-shaped hollow profiled sections for receiving a finite length paper draw-in device


13


, for example a roller chain.




The start of a paper web to be drawn into the press is fastened in a known manner to the paper web draw-in device


13


. The paper web draw-in device


13


is guided by the guide devices


12


, supported by the holder


11


, to turn through approximately 180° about the paper web guide roller


03


,


04


with which each paper web draw-in device


13


cooperates.




While a preferred embodiment of a device for infeeding a web in accordance with the present invention has been set forth fully and completely hereinabove, it will be apparent to one of skill in the art that various changes in, for example the drive for the draw-in devices, the type of printing press used, and the like could be made without departing from the true spirit and scope of the present invention which is accordingly to be limited only by the following claims.



Claims
  • 1. A device for drawing in a web comprising:first and second laterally spaced frames; at least one web guide roller supported between said first and second frames for rotation about an axis of rotation; a web draw-in belt adapted to draw in a web along a web conveying direction about said at least one web guide roller; at least two web draw-in belt guide devices positioned for supporting said web draw-in belt adjacent said at least one web guide roller, said at least two web draw-in belt guide devices being positioned to cause said web draw-in belt to turn through 180° about said at least one web guide roller; a holder, said holder supporting said at least two web draw-in belt guide devices; and at least a first guide rail extending between said first and second laterally spaced frames parallel to said web guide roller axis of rotation, said at least first guide rail supporting said holder, said holder being movable along said at least one guide rail in a direction of movement parallel to said web guide roller axis of rotation.
  • 2. The device of claim 1 wherein each of said at least two web draw-in belt guide devices is a roller.
  • 3. The device of claim 1 wherein said at least first guide rail has a C-shaped cross-section.
  • 4. The device of claim 1 further including a second guide rail spaced from and extending parallel to said first guide rail and cooperating with said first guide rail to support said holder.
  • 5. The device of claim 4 further including a first bracket slidable in said first guide rail and a second bracket slidable in said second guide rail, said first and second brackets extending between said holder and said first and second guide rails.
  • 6. The device of claim 1 further including a bracket slidable in said at least first guide rail and extending between said holder and said at least first guide rail.
Priority Claims (1)
Number Date Country Kind
100 04 482 Feb 2000 DE
PCT Information
Filing Document Filing Date Country Kind
PCT/DE01/00248 WO 00
Publishing Document Publishing Date Country Kind
WO01/56790 8/9/2001 WO A
US Referenced Citations (10)
Number Name Date Kind
4158846 Gordon Jun 1979 A
4807791 Cho Feb 1989 A
5087185 Yada et al. Feb 1992 A
5108210 Hirano et al. Apr 1992 A
5263414 Lehrrieder et al. Nov 1993 A
5605709 Morimoto et al. Feb 1997 A
5806745 Irwin Sep 1998 A
6038973 Marmin Mar 2000 A
6041991 Mehri et al. Mar 2000 A
6269751 Hauck et al. Aug 2001 B1
Foreign Referenced Citations (4)
Number Date Country
2 241 127 Mar 1974 DE
92 14 808.5 Mar 1993 DE
198 16 510 Jan 1999 DE
197 18 548 Sep 1999 DE