Metal working – Method of mechanical manufacture – Roller making
Reexamination Certificate
1999-11-09
2001-03-13
Rosenbaum, I. Cuda (Department: 3726)
Metal working
Method of mechanical manufacture
Roller making
C029S895210, C101S415100, C101S486000
Reexamination Certificate
active
06199280
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a device for mounting flexible plates such as flexible printing plates, as well as to an associated method. An insertion slider is used to place the beveled or angled plate ends into cooperating slits formed on the surface of the flexible plate receiving cylinder.
DESCRIPTION OF THE PRIOR ART
A device for inserting the trailing end of a flexible printing plate into a clamping device on a plate cylinder is known from JP 62-169646 A.
A cylinder with fastening slits for printing plates or support plates, whose ends are beveled at acute, or obtuse angles is known from DE 19 60 635 C, The fastening slit extends along a secant through the cylindrical cross section of the cylinder, i.e. it extends obliquely in relation to the diameter of the cylinder.
EP 0 710 556 A1 shows a device for mounting a flexible plate, which has a leading suspension leg beveled at an acute angle, and a trailing suspension leg beveled at an obtuse angle, in a fastening slit of a cylinder. An insertion slider is provided for inserting the trailing suspension leg.
SUMMARY OF THE INVENTION
The present invention is based on the object of creating a method, as well as an associated device, for mounting flexible plates, which are provided with suspension bevels, on a cylinder of a rotary printing press, which cylinder is provided with a fastening slit.
This object is attained by means of the provision of an insertion slider that cooperates with the trailing suspension leg of the flexible plate. Another insertion slider, which cooperates with the leading suspension leg is also provided. Both of these insertion sliders are shaped to cooperatively engage the angled flexible plate ends and to move the plate ends into the corresponding angled plate end receiving slits on the plate receiving cylinder.
The advantages which can be achieved by means of the present invention reside, in particular, in that a dependable insertion of a suspension bevel at the end of a printing plate is also assured in case of fastening slits of a cylinder of a rotary printing press which are manually difficult to access. The device of the present invention consists of few mechanical components and is used for suspending a front suspension leg, as well as a rear suspension leg, of a printing plate in the fastening slits of a cylinder. It is also possible to arrange several printing plates at the circumference, and several printing plates over the axial length of the cylinder.
REFERENCES:
patent: 4727807 (1988-03-01), Suzuki et al.
patent: 5094165 (1992-03-01), Sugiyama et al.
patent: 5526747 (1996-06-01), Marmin et al.
patent: 5560298 (1996-10-01), Krokolinski et al.
patent: 5678487 (1997-10-01), Guaraldi et al.
patent: 1960635 (1972-08-01), None
patent: 44 47 088 C1 (1996-02-01), None
patent: 0710556 A1 (1995-10-01), None
patent: 62-169646 (1987-07-01), None
patent: 05212855 (1993-08-01), None
Schafer Karl Robert
Schneider Georg
Compton Eric
Cuda Rosenbaum I.
Jones Tullar & Cooper PC
Koening & Bauer Aktiengesellschaft
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