Device and method for combining and processing several paper web

Sheet-material associating – Associating or disassociating – Web associating

Patent

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Details

B65H 3900

Patent

active

057792330

DESCRIPTION:

BRIEF SUMMARY
The invention relates to a device for combining and processing several paper webs according to the preamble of claim 1, as well as a method for combining and processing several paper webs.
The expression "processing of a paper web" in the broadest sense of the term is understood to be any form of processing, be it printing, laminating, numbering, perforating, or punching, and the application or provision (by gluing) of plastic cards such as credit cards, with sample pouches, labels, or the production of address windows and their covering by transparent foils.
When an individual endless paper web is processed with synchronization of the basic processes, fault-free finishing of said web, such as folding or cross-cutting, depends uniquely on proper maintenance of web speed. This is accomplished for example by registration holes being provided on the paper web and with toothed belts, located along the finishing or processing line, engaging said holes, thus ensuring a synchronous feed of the paper web. This type of longitudinal register control however has the disadvantage that firstly this perforated edge must generally be removed in the unit for further processing and secondly this bilateral perforated edge means loss of material that has a high value in itself.
In a known device, this disadvantage is overcome by providing the paper web with markings that are registered by a web feeler. This feeler is located upstream of the unit for further processing. In this way, with appropriate control, further processing in register, such as printing, embossing, stamping or cutting of webs that have already been processed, preprinted for example, is made possible. This control regulates the drive of the pay-out rollers on the pay-out unit, by which the format length can be influenced. Alternatively, the register can also be corrected using a synchronous motor that influences the drive of the feed rollers located upstream from the unit for further processing.
The situation is completely different however when it is desired not only to process and finish a web, a requirement which arises for example when printing newspapers, but several webs must be processed, possibly in different ways, for example, glued-in sample packs or removable reply cards. Thus far, no satisfactory solutions have been found for these. Of course it is possible to guide all the paper webs using toothed belts but this would not allow independent processing of individual webs. The other device described above could be used for a paper web but not for a plurality of webs guided in common, one above the other for example, and then possibly processed independently and possibly are webs of different quality or with different processing (application, for example).
Hence the goal of the invention is to provide a device and a method by which several paper webs are brought together and processed (possibly independently of one another), and then, correctly registered longitudinally, can be fed jointly to a unit for further processing. One way of achieving this goal is by combining the features of claim 1 and/or claim 8. Advantageous embodiments are described in the dependent claims.
The term "paper webs" according to the invention refers to all materials provided in the form of a web that are possibly subjected to a processing procedure, which in any event are combined with other webs, and which are then subjected to further processing jointly with these other webs. Thus for example it includes foil webs, including thin cardboard webs and paper webs of different thicknesses and qualities.
The term "combination" of the individual paper webs refers to the joint arrangement of the already-unrolled paper webs (possibly at a distance from one another) before they pass through the processing line where they are possibly processed independently of one another or are not processed at all, in other words, they possibly travel different paths. Thus it is possible according to the invention for one of the webs to pass through the processing line without being processed w

REFERENCES:
patent: 3097844 (1963-07-01), Huck
patent: 4425694 (1984-01-01), Somerville
patent: 4570916 (1986-02-01), Thompson
patent: 5048810 (1991-09-01), Palmatier et al.
patent: 5104104 (1992-04-01), Mol
patent: 5117610 (1992-06-01), Hartman et al.

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