Device for drawing a web into a printing press

Information

  • Patent Grant
  • 6615718
  • Patent Number
    6,615,718
  • Date Filed
    Friday, November 22, 2002
    21 years ago
  • Date Issued
    Tuesday, September 9, 2003
    20 years ago
Abstract
A material web to be printed is drawn into a rotary printing press by securing a reinforcement element to a leading end of the material web. The reinforcement element can be enwrapped in the material web or held to the web by suitable catches. An openable and closable loop is formed in the reinforcement element and is used to connect the element to the web draw-in device of the printing press.
Description




FIELD OF THE INVENTION




The present invention relates to a device for drawing in a printing material web into a rotary printing press. One end of the printing material web can be connected to a draw-in element by using at least one reinforcement element.




A device for drawing in a printing material web is known from DE 297 10 607 U1. In this device, a wedge-shaped reinforced element is used for forming a draw-in tip.




U.S. Pat. No. 4,063,505 describes a device for drawing in a web of material by means of two tapes. A start of the web of material is maintained in a frictionally connected manner between the two tapes.




GB 2 256 854 A discloses a device for drawing in a printing material web by means of a reinforcement element. Here, the reinforcement element and the printing material web are connected by means of staples.




Later published DE 198 16 510 A1 discloses a draw-in tip, which is wrapped by the corners of the start of a web.




SUMMARY OF THE INVENTION




The object of the present invention is directed to creating devices and a method for drawing in a printing material web.




In accordance with the present invention, this object is attained by a device and method in which one end of the printing material web which is to be drawn into a rotary printing press can be connected to a draw-in element by using at least one reinforcement element. This reinforcement element has catches on its side facing the web, or has a closable loop. The end of the printing material web and the reinforcing element are connected by the catches or by the loop.




A simply produced draw-in tip with a small number of adhesives is achieved, in an advantageous manner, by the device in accordance with the present invention. Only a small portion of the tractive forces is transmitted by the adhesives. An interlocking connection occurs between the reinforcement element and the free end of the material to be imprinted.











BRIEF DESCRIPTION OF THE DRAWINGS




Preferred embodiments of the present invention are represented in the drawings and will be described in greater detail in what follows.




Shown are in:





FIG. 1

, a schematic representation of a device for drawing in a printing material web in accordance with a first preferred embodiment of the present invention,





FIG. 2

, an enlarged section in accordance with

FIG. 1

in the area of the draw-in means,





FIG. 3

, the schematic representation of a device for drawing in a printing material web in accordance with a second preferred embodiment,





FIG. 4

, an enlarged portion in accordance with

FIG. 3

in the area of the draw-in means,





FIG. 5

, a schematic representation of a device for drawing in a printing material web in accordance with a third preferred embodiment, and in





FIG. 6

, a schematic section in accordance with claim 5 in the area of an engagement element.











DESCRIPTION OF THE PREFERRED EMBODIMENTS




The start of a printing material web


01


, for example a paper web, is provided with a draw-in tip


02


for drawing this printing material web


01


along a prepared guide path into a web-fed rotary printing press, for example. This draw-in tip


02


has a reinforcement element


03


. In the present preferred embodiment, this reinforcement element


03


is embodied as a generally wedge-shaped plate having a thickness d


03


of, for example 1 mm and having a length


103


along its linear edge


17


of, for example 1.5 m, all as seen in

FIGS. 1 and 2

. This reinforcement element


03


can be deformed, for example vertically reversible in respect to the conveying plane, and is made using a rubber-elastic material. The reinforcement element


03


preferably is made, for example, of a foil-like plastic material, such as, for example PA, PE, PVC, PTFE.




T-shaped or L-shaped reinforcement elements can also be used in place of a generally wedge-shaped reinforcement element


03


. All of the contemplated shapes of the reinforcement element


03


have in common that a first, or attachment end


04


of a first width b


04


, for example of 150 mm, is greater in comparison with a second or coupling end


06


, having a second width b


06


of, for example 50 mm, of the reinforcement element


03


.




The second or coupling end


06


of the reinforcement element


03


is provided with a coupling device for the selective fastening of the reinforcement element


03


to a draw-in element


07


of, for example, a web-fed rotary printing press.




This coupling device can be designed, for example, as a coupling loop


08


, or as a coupling eye, which is able to be fastened to a catch


09


of the draw-in element


07


.




In the present first preferred embodiment, the coupling loop


08


is formed by turning over or doubling back the second, free coupling end


06


of the reinforcement element


03


. A turned-over or doubled back portion


11


of the second, free coupling end


06


of the reinforcement element


03


is again connected with the reinforcement element


03


. This connection can be made by means of a hook-and-eye strip


12


, as depicted in FIG.


2


. In this case, in its stretched state the second, free coupling end


06


has on one side both of the partial elements; i.e. the hook strip


13


and eye strip


14


of the hook-and-eye strip


12


, which partial elements


13


and


14


are arranged at a distance from each other. After turning the end


06


over, thus doubling it back on itself, the hook strip


13


is connected with the eye strip


14


. In this way, a loop


08


is formed, which loop


08


can then be selectively opened and closed.




The opening and closing of the loop


08


can take place multiple times without destroying the material of the reinforcement element


03


in the process.




A magnetically acting connection, such as two magnets acting together, or one magnet acting together with a metal piece, or a snap fastener connection can be provided in place of a hook-and-eye strip


12


for forming such a loop


08


, which magnetically acting connection or snap fastener connection is selectively opened and closed.




To form the draw-in tip


02


, the reinforcement element


03


, together with a front edge


18


of the free end


16


of the printing material web


01


extending transversely in respect to the conveying direction, forms an opening angle α in the range between 45° to 85°. A corner


21


of the printing material web


01


, defined by the lateral edge


19


facing away from the front edge


18


and remote from the draw-in element


07


, is temporarily held manually on the reinforcement element


03


or is connected with the reinforcement element


03


by means of an adhesive strip or an insertable tongue.




Starting at this remote corner


21


, the reinforcement element


03


is turned over several times, so that the printing material web


01


is wrapped at least once completely around the reinforcement element


03


. The free end


16


of the printing material web


01


is preferably wrapped around the reinforcement element


03


in several layers. In the course of this enwrapment, the reinforcement element


03


travels or moves laterally across the web


01


from the remote lateral edge


19


of the printing material web


01


, which faces away from the draw-in element


07


, to the proximal lateral edge


22


of the printing material web


01


, which is close to the draw-in element


07


.




The reinforcement element


03


turned-over or enwrapped in web


01


in this way is joined together with web


01


, for example by means of an adhesive strip


23


, so that the layers


24


of the printing material web


01


which surround reinforcement element


03


are connected with the free end


16


of the printing material web


01


.




A proximal corner


26


of the free end


16


of the printing material web


01


, which faces or is proximal to the draw-in element


07


, can be folded in, to now be facing away from the draw-in element


07


, and can also be secured on the free end


16


of the material web


01


by means of the adhesive strip


23


, all as seen in FIG.


1


.




The draw-in tip


02


formed in this way is now connected with the draw-in element


07


.




This draw-in element


07


can be embodied, for example, as a chain


28


as depicted in

FIG. 1

, and has catch


09


, embodied as a suspension clip


29


, which extends out from chain


28


in the axial direction, i.e. perpendicularly in relation to the conveying direction T. An opening


31


or a hook for fastening the draw-in tip


02


is provided in this suspension clip


29


.




The draw-in element


07


can also be embodied as a tape


32


, as shown in FIG.


3


and in

FIG. 4

, for example, on which loops


33


, or in which slits are arranged.




Now the second, free or coupling end


06


of the draw-in tip


02


can be threaded through the opening


31


or the loop


33


of the draw-in means


28


,


32


, respectfully. This second, free or coupling end


06


, once passed through the opening


31


,


33


of the draw-in means


28


,


32


, is now turned over in the direction toward the draw-in tip


02


and is joined or doubled back on itself by means of the hook-and-eye strip


12


to form the coupling loop


08


.




In a further preferred embodiment as seen in FIG.


5


and in

FIG. 6

, catches


36


, which penetrate through the printing material web


01


, are attached to a first side of a reinforcement element


34


facing the printing material web


01


. The catches


36


are of a length


136


which is of at least the maximal thickness d


01


of a printing material web


01


to be drawn in, a thickness d


36


, of for example 0.1 mm, extending in the conveying direction T, and a width b


36


, for example 10 mm, extending perpendicularly in respect to the conveying direction, as seen in

FIGS. 5 and 6

.




A counter element, acting as a female element


37


, is associated with this reinforcement element


34


, which acts as a male element


34


and which is provided with the previously discussed catches


36


. This female element


37


has openings


38


matched to the catches


36


. To form a draw-in tip


39


, the free end


16


of the printing material web


01


, for example, is placed on the female element


37


, and the printing material web


01


is penetrated by means of the catches


36


of the male element


34


. Now the female element


37


and the male element


34


are releasably connected with each other, for example magnetically, or by means of snap closures or by means of a hook-and-eye strip.




While preferred embodiments of a device for inserting a strip of fabric to be printed or for drawing in the strip of fabric or the printing material web into a rotary printing press, in accordance with the present invention have been set forth fully and completely hereinabove, it will apparent to one of skill in the art that a number of changes in, for example the specific rotary printing press, the drive for the draw-in device 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 connecting a printing material web to a draw-in element of a rotary printing press, said device comprising:a reinforcement element having an attachment end adapted to be secured to an end of the printing material web, and a coupling end adapted to be engagable with the draw-in element of the rotary printing press, said attachment end and said coupling end of said reinforcement element being spaced from each other in a conveyance direction of the printing material web; a plurality of spaced catches on a side of said attachment end of said reinforcement element facing a first side of the end of the printing material web, said plurality of catches being adapted to interlockingly penetrate the printing material web to secure said attachment end of said reinforcement element to the end of the printing material web; and a counter element adapted to be placed adjacent a second side of the end of the printing material web and opposite from said plurality of catches, said counter element having a plurality of spaced catch receiving openings, said plurality of spaced catches and said plurality of catch receiving openings being engageable to clamp the end of the printing material web therebetween.
  • 2. The device of claim 1 wherein each of said catches has a width extending generally perpendicularly to the conveyance direction of the printing material web and a thickness extending generally in the conveyance direction of the printing material web, said width of each of said catches being greater than said thickness of each of said catches.
  • 3. The device of claim 1 wherein said plurality of spaced catches are spaced both in the conveyance direction of the printing material web and generally perpendicularly to the conveyance direction of the printing material web.
  • 4. The device of claim 1 wherein each of said plurality of spaced catches has a length, said length being less than a combined thickness of the printing material web and said counter element.
  • 5. The device of claim 1 wherein said coupling end of said reinforcement element, and each counter element are each generally planar.
  • 6. The device of claim 5 wherein said attachment end of said reinforcement element and said counter element are arranged generally parallel to each other and to the printing material web.
  • 7. The device of claim wherein said attachment end of said reinforcement element has a first width and said coupling end of said reinforcement element has a second width, said first width being greater than said second width.
  • 8. The device of claim 1 further including a loop on said coupling end of said reinforcement element, said loop adapted to be releasably connected to the draw-in element.
Priority Claims (1)
Number Date Country Kind
198 37 361 Aug 1998 DE
Parent Case Info

This is a divisional application and the assignment document for the parent application 09/744,980 was filed on Feb. 16, 2000, now U.S. Pat. No. 6,510,790 which is a 371 of PCT/DE99/02527 filed Aug. 12, 1999.

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6510790 Brückl et al. Jan 2003 B1
6513428 Sappal et al. Feb 2003 B1
20010025577 Cousin et al. Oct 2001 A1
Foreign Referenced Citations (7)
Number Date Country
3309121 Aug 1984 DE
29710607 Feb 1998 DE
19816510 Jul 1999 DE
198 37 362 Feb 2000 DE
0533042 Mar 1993 EP
2256854 Dec 1992 GB
2315062 Jan 1998 GB