Printing – Cleaning attachments
Reexamination Certificate
1999-10-08
2002-07-02
Hirshfeld, Andrew H. (Department: 2854)
Printing
Cleaning attachments
C101S423000
Reexamination Certificate
active
06412414
ABSTRACT:
BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION
The invention relates to a method for removing from a printing press, through the intermediary of a traverse, a cleaning device assigned to a cylinder, and further relates to a device for removing from a printing press a cleaning device assigned to a cylinder, the removing device including a traverse in the printing press, the traverse being adjustable with respect to the cylinder into two different positions, and the cleaning device being removable from the printing press by the traverse in the longitudinal direction of the latter.
The necessity for removing a cleaning device from a printing press can, in practice, for example, result from having to exchange a new and clean cleaning cloth, that is able to be wound up and unwound, instead of a used-up and soiled cleaning cloth. The exchange of the cleaning cloths generally requires good accessibility of the cleaning device, which is not provided for a cleaning device found within the printing press. Special problems result when the cleaning device located between two side walls of the printing press during the use thereof cannot be lifted from between the side walls in a direction parallel thereto.
An impression-cylinder washing device for sheetfed printing presses is described in Japanese Patent 25 78 123, the main body of the washing device being displaceable on a rail perpendicularly to the side walls. The rail extends through an opening formed in the lower section of an impression cylinder through the side wall.
An opening in the side wall aligned in-register with the cleaning position of the cleaning device is undesirable or altogether impossible in many cases. For example, in another type of printing press than that shown in the Japanese Patent 25 78 123, at the inner side of the side wall, transmission members, pipelines or the like can be arranged, by which an opening in the side wall in the vicinity of the insert location of the cleaning device is blocked, and the removal of the cleaning device through the opening is consequently not realizable.
A printing press cylinder-washing device is described in German Petty Patent No. 92 13 605.2 and has a washing beam connected by a linear guiding device to a suspension device, by which the washing beam can be driven out of the printing unit in the longitudinal direction of the washing beam and again driven in. The suspension device is swivellable relative to a cylinder via linkages out of a first parallel position into a second parallel position, but not, however, in an inclined position. This device exclusively allows the washing beam to be extended and retracted axially parallel to the cylinder and is suited only for printing presses having side supports with an opening below the lower half of the cylinder. Thus, the deficiencies of the device of the aforementioned Japanese Patent 25 78 123 are not remedied by this washing device.
Furthermore, there is described in the published German Patent Document DE 19 63 6985 C1, a device nongeneric to the foregoing for feeding printing ink from a printing-ink cartridge to an inking unit of a rotary printing press, the printing-ink cartridge and the appertaining device for conveying printing ink being arranged in a traverse the position of which is variable with respect to the side frames of the rotary printing press or which is swivellable on a side frame. No suggestions for solving the problems associated with the removal of a cleaning device from a printing press can be derived from this document. The device for conveying printing ink and the printing-ink cartridge arranged in the traverse is in no way comparable with a cleaning device. The small and very handy cartridge identified by the reference numeral
11
in this reference can be placed manually between the illustrated piston
23
and the outlet
26
on the traverse and can be removed from the traverse in an equally simple manner. The traverse possesses no guiding function generally in this regard.
SUMMARY OF THE INVENTION
It is an object of the invention to provide a method for removing with a traverse a cleaning device from a printing press, and a device for removing a cleaning device, including a traverse in a printing press by which, for many types of printing press constructions, the cleaning device can be removed from the printing press without great effort.
With the foregoing and other objects in view, there is provided, in accordance with a first aspect of the invention, a method of removing from a printing machine, with the aid of a traverse of the printing machine, a cleaning device assigned to a cylinder, which comprises, in a first method step, shifting the traverse out of a parallel position relative to the cylinder, wherein a side wall of the printing machine blocks a movement of the cleaning device, guided by the traverse, out of the printing machine, into an inclined position relative to the cylinder, the cleaning device guided by the traverse being movable past an outer contour of the side wall or through an opening formed in the side wall, and out of the printing machine, and, in a second method step, moving the cleaning device, guided by the traverse, in the longitudinal direction of the traverse and out of the printing machine.
By this method, the cleaning device, without any great effort, for example, for servicing purposes, can be removed from the printing machine by the pressman.
An introduction of the cleaning device into the printing machine by the traverse can take place in accordance with a method wherein, in a first method step, the cleaning device, guided by the traverse in the longitudinal direction of the traverse, is moved into the printing machine, and in a second method step, the traverse is adjusted out of the inclined position, the cleaning device, guided by the traverse past the outer contour or through an opening in the side wall, being movable into the printing machine and into the parallel position wherein a side wall of the printing machine blocks a movement of the cleaning device out of the printing machine, the movement being guided by the traverse.
In accordance with a second aspect of the invention, there is provided an assembly including a cleaning device assigned to a cylinder, and comprising a traverse in a printing machine, the traverse being adjustable with respect to the cylinder into two different positions, and the cleaning device being removable from the printing machine in the longitudinal direction of the traverse with the aid of the traverse, the traverse being selectively adjustable into a parallel position and an inclined position relative to the axis of the cylinder.
An assembly constructed in such a manner ensures a very operationally reliable adjustment of the traverse out of a position axially parallel to the cylinder and perpendicular to the side wall into a position inclined both to the cylinder as well as to the side wall. It is understood that by the term cylinder there is meant, for example, printing unit cylinders, sheet transport drums and inking unit rollers. The assignment of the cleaning device to the cylinder can, on the one hand, serve for cleaning the peripheral jacket surface of the cylinder and a cylinder covering or dressing forming it, respectively, or, on the other hand, the cleaning of printing material guided on the cylinder. In the last-mentioned case, the cleaning device may, for example, be based upon the brush principle.
This device offers the advantage that, for removing and naturally also for introducing the cleaning device, an offset opening can be provided for inserting the cleaning device into position, the opening being formed in a region of the side wall where this opening causes no trouble. In the device according to the invention, a window-shaped opening in the side wall can advantageously in many cases be completely dispensed with, if the traverse is adjustable so that the cleaning device can be guided past the outer contour of the side wall. The outer contour of the side wall which the cleaning device can be guided past can exte
Greenberg Laurence A.
Heidelberger Druckmaschinen AG
Hirshfeld Andrew H.
Mayback Gregory L.
Nguyen Anthony H.
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