Bookbinding: process and apparatus – Process
Patent
1998-05-11
2000-04-25
Fridie, Jr., Willmon
Bookbinding: process and apparatus
Process
493390, 493350, 493444, 493447, 493449, 493456, 53120, 412 29, 412 30, 412 31, 281 151, 281 27, 281 38, 281 46, 281 47, B42D 1300
Patent
active
060536845
DESCRIPTION:
BRIEF SUMMARY
FIELD OF INVENTION
The invention present relates to a folded product as well as a method for producing it and a device for executing the method in which a folded signature is provided with a transverse fold. This fold is formed by a folding blade and a cooperating pair or folding and counterfolding jaws. Short stampings are formed along the transverse fold by the cooperating jaws.
DESCRIPTION OF THE PRIOR ART
From DE 20 10 024 and DE 21 18 454 it is known to apply a transverse fold to signatures by means of folding jaws and folding blades and to create a folded product in this way.
It is disadvantageous with these prior art devices that after transverse folding, the folding products arch in the vicinity of the transverse fold edge, which can lead to difficulties during further processing, or respectively during further conveyance.
U.S. Pat. No. 1,881,816 describes a folding jaw cylinder in which the folding jaws are provided with cutouts. The folding blade enters into these cutouts.
It is the object of the present invention to create a folded product, as well as to provide a method and an associated device, by means of which arching of the folded product in the vicinity of the transverse fold is prevented to the greatest possible extent.
This object is attained in accordance with the invention by the provision of a row of folding and counter folding jaws that cooperate with a folding blade. The folding and counter folding jaws are provided with profiled folding surfaces that cooperate with each other to form a transverse fold line in the signature being folded. Stampings or embossments are formed adjacent the fold line.
The advantages which can be achieved by the present invention reside, in particular, in that by means of a stamping located in the vicinity of the holding edge a sharp, solid fold break results in the folded product and prevents the subsequent arching of the folded product. This is of particular advantage in connection with the production of tabloid products .
BRIEF DESCRIPTION OF THE DRAWINGS
Several preferred embodiments of the present invention are represented in the drawings and will be described in more detail in what follows. Shown are in:
FIG. 1, a side elevation view in an enlarged representation of two folding jaw elements acting against each other in connection with a folding blade and a signature,
FIG. 2, a view taken in the direction indicated by arrow A in FIG. 1 with the representation of a first profile, in accordance with the present invention, of the folding jaw elements,
FIG. 3, a perspective view of a folding jaw element with the first profile in accordance with the present invention,
FIG. 4, a view taken in the direction indicated by arrow A in FIG. 1 with the representation of a second profile in accordance with the present invention of the folding jaw elements,
FIG. 5, a cross section taken along line V--V through the profiled folding jaw elements in accordance with FIG. 1 with the second profile, and showing a folded product,
FIG. 6, a perspective view of a first folding jaw element with a second profile in accordance with the invention,
FIG. 7, a perspective view of a second folding jaw element with a second profile in accordance with the invention, and
FIG. 8, a perspective view of a folded product produced in accordance with the present invention in a representation on a reduced scale.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
A folding jaw cylinder 1 has several folding jaw systems, distributed in a known manner over its circumference. Each folding jaw system consists of a first row of folding jaw elements 4, lined up in a row on a support and pivotable in a known manner and, which cooperate with a second row of counter folding jaw elements 3 which are fixed in place on a cylinder. It is also possible to arrange both rows of folding jaw elements 3, 4 in a pivotable manner. Basically, each folding jaw element 4, or respectively counter folding jaw element 3, consists of a fastening plate 5, 10 and a folding tool support 15, 20. The fastening plate 10, 5 of
REFERENCES:
patent: 1881816 (1932-10-01), Meyer
patent: 3228710 (1966-01-01), Chodorowski
patent: 4951967 (1990-08-01), Michalik
Eckert Gunther Oskar
Rugamer Thomas Werner
Fridie Jr. Willmon
Henderson Mark T.
Koenig & Bauer--Albert Aktiengesellschaft
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