Printing press for security printing and method for changing a printing forme and printing press start-up

Patent metadata

Field	Value
Publication number	US-9533486-B2
Application number	US-201414917631-A
Country	US
Kind code	B2
Filing date	May 23, 2014
Priority date	Sep 9, 2013
Publication date	Jan 3, 2017
Grant date	Jan 3, 2017

Abstract

A printing press for security printing has an Orloff offset printing unit comprising a plurality of stencil cylinders which can be inked, in each case, by an associated inking unit, an ink-collecting cylinder which interacts with the plurality of stencil cylinders, an Orloff plate cylinder which interacts with the ink-collecting cylinder, a transfer cylinder which interacts with the Orloff plate cylinder, and an impression cylinder which forms a printing point with the transfer cylinder. At least the transfer cylinder which interacts with the Orloff plate cylinder in the thrown-on position is included by a first printing unit section and is mounted in or on a first part frame. The ink-collecting cylinder is included by a second printing unit section and is mounted in or on a second part frame which is different from the first part frame. The first and the second part frame can be moved optionally into a first relative position with respect to one another, which forms a working position, and into a second relative position with respect to one another which forms a maintenance position. In the maintenance position, a space is formed between the first and the second printing unit section and/or between the first and the second part frame, which space ensures direct access at least to the ink-collecting cylinder, to the Orloff plate cylinder and to the transfer cylinder which interacts with the Orloff plate cylinder. Moreover, the invention relates to a method for changing a printing forme and for starting production.

First claim

What is claimed is:

1. A printing press for securities printing with an Orlof offset printing unit ( 26 ), comprising a plurality of stencil cylinders ( 24 ) that are each inkable by an associated inking unit ( 31 ), an ink collecting cylinder ( 23 ) interacting with the plurality of the stencil cylinders ( 24 ), an Orlof plate cylinder ( 22 ) interacting with the ink collecting cylinder ( 23 ), a transfer cylinder ( 21 ) interacting with the Orlof plate cylinder ( 22 ), and an impression cylinder ( 19 ) forming a printing position ( 11 ; 12 ; 13 ) together with the transfer cylinder ( 21 ), characterised in that,
at least the transfer cylinder ( 21 ) that interacts in print-on position with the Orlof plate cylinder ( 22 ) is contained in a first printing unit section and is mounted in or on a first sectional frame ( 47 . 1 ),
the ink collecting cylinder ( 23 ) is contained in a second printing unit section and is mounted in or on a second sectional frame ( 47 . 2 ) that is different from the first sectional frame ( 47 . 1 ),
the first and the second sectional frame ( 47 . 1 ; 47 . 2 ) can be selectively brought into a first relative position forming a working position and into a second relative position forming a maintenance position with respect to each other, in that the first sectional frame ( 47 . 1 ), the second sectional frame ( 47 . 2 ) or both sectional frames ( 47 . 1 ; 47 . 2 ) are arranged as movable within the printing press, wherein in the maintenance position a space ( 05 ) is formed between the first and the second printing unit section and/or between the first and the second sectional frame ( 47 . 1 ; 47 . 2 ) that allows direct access to at least the ink collecting cylinder ( 23 ), to the Orlof plate cylinder ( 22 ) and to the transfer cylinder ( 21 ) which interacts with the Orlof plate cylinder ( 22 ).

2. The printing press according to claim 1 , characterised in that the impression cylinder ( 19 ) that interacts with the transfer cylinder ( 21 ) in print-on position is contained in the first print unit section and is mounted in or on the first sectional frame ( 47 . 1 ), and/or in that the plurality of stencil cylinders ( 24 ) are contained in the second printing unit section and are mounted in or on the second sectional frame ( 47 . 2 ) that is different from the first sectional frame ( 47 . 1 ), and/or in that the Orlof plate cylinder ( 22 ) is also contained in the first or the second printing unit section and is mounted in or on the first or second sectional frame ( 47 . 1 ; 47 . 2 ).

3. The printing press according to claim 2 , characterised in that, relative to the transport path of the printing sheet ( 02 ) through the printing press, an additional printing unit ( 28 ) is provided upstream of the Orlof offset printing unit ( 26 ) by means of which the printing material ( 02 ) can be printed with single-or multi color at a print position 11 .

4. Printing press according to claim 3 , characterised in that the additional printing unit ( 28 ) is arranged vertically above the Orlof plate cylinder ( 22 ), which is in working position, and overlaps at least in its horizontal width between its print position ( 11 ) and its ink fountain ( 119 ) with the Orlof plate cylinder ( 22 ).

5. The printing press according to claim 4 , characterised in that the additional printing unit ( 28 ) is separably configured in the region of its printing position ( 11 ) or between the ink fountain or the ink fountains ( 119 ) and the cylinder or the cylinders ( 115 ) which interact with the ink fountain or ink fountains ( 119 ), and/or in that the additional printing unit ( 28 ) is separably configured together with the Orlof printing unit ( 26 ).

6. Printing press according to claim 5 , characterised in that the components of the separable printing unit ( 28 ) are mounted correspondingly separated in an upper frame part ( 121 . 1 ; 121 . 2 ; 121 . 3 ) of the respective sectional frame ( 47 . 1 ; 47 . 2 ) of the first and second printing unit section or in a single- or multi-piece sectional frame attachment ( 121 . 1 , 121 . 2 ; 121 . 2 , 121 . 3 ) that is connected to the respective sectional frame ( 47 . 1 ; 47 . 2 ).

7. Printing press according to claim 1 , characterised in that the impression cylinder ( 19 ) forming the printing position ( 12 ) together with the Orlof offset printing unit ( 26 ) comprises grippers in the circumferential area that enable transport of sheet-like printing material ( 02 ).

8. Printing press according to claim 1 , characterised in that the impression cylinder ( 19 ) forming the printing position ( 12 ) together with the Orlof offset printing unit ( 26 ) is interactingly arranged in upstream position, relative to the transport path of the printing material ( 02 ) through the printing press, with a drum ( 16 ) involved in the transport of web-like printing material ( 02 ) and/or in downstream position, relative to the transport path of the printing material ( 02 ) through the printing press, with a drum ( 17 ) involved in the transport of web-like printing material ( 02 ).

9. The printing press according to claim 1 , characterised in that second sectional frame ( 47 . 2 ) is mounted so as to be movable translationally along a movement path in the direction of the first sectional frame ( 47 . 1 ) and away from said frame, and/or in that in working position the second sectional frame ( 47 . 2 ) is coupled to the first sectional frame ( 47 . 1 ), in particular is connected thereto by a lock, and is in thrown-off position from the first sectional frame ( 47 . 1 ) in maintenance position.

10. Printing press according to claim 1 , characterised in that the ink collecting cylinder ( 23 ) and the Orlof plate cylinder ( 22 ) are arranged relative to each other in an operating position, i.e. in an operational thrown-on or thrown-off position, and are radially spaced apart from each other in maintenance position at a distance which is significantly greater, relative to the distance of the shell surfaces in thrown-off position, in particular by at least a factor of 10, as compared to the distance in thrown-off position.

11. Printing press according to claim 1 , characterized in that the inking units ( 31 ) are part of a third printing unit section and are mounted in or on a third sectional frame ( 47 . 3 ) that is different from the second sectional frame ( 47 . 2 ), where the third printing unit section in its sectional frame ( 47 . 3 ) can be moved away from the second printing unit section for maintenance purposes.

12. The printing press according to claim 1 , characterised in that the impression cylinder ( 19 ) is configured as a cylinder ( 19 ) of an additional printing unit ( 27 ) for printing the printing material ( 02 ) on the other side of the printing material.

13. The printing press according to claim 1 , characterised in that the adjustment movement of the Orlof plate cylinder ( 22 ) and the transfer cylinder ( 21 ) associated therewith are forced coupled by mechanical or electronic means such that a radial movement of the transfer cylinder ( 21 ) effects a corresponding and defined movement of the Orlof plate cylinder ( 22 ).

14. Method for switching a printing form onto an Orlof plate cylinder of an Orlof offset printing unit ( 26 ) arranged in a printing press for securities printing and for start up of a production,
where during standstill of the printing press a coupling, in particular a lock, between a first sectional frame ( 47 . 1 ) containing the Orlof plate cylinder ( 22 ) and a second sectional frame ( 47 . 1 ) containing an ink collecting cylinder ( 23 ) is disengaged,
in the state of disengaged coupl

Assignees

• Koenig & Bauer Ag

Inventors

• Kress Patrick
• Schaede Johannes
• Schwitzky Volkmar

Classifications

• B41F11/02 Primary

  for securities (security printing B41M3/14) · CPC title

• B41P2233/10

  Starting-up the machine · CPC title

• B41F13/0024

  Frames · CPC title

• B41F9/021

  Sheet printing presses · CPC title

• B41F9/00

  Rotary intaglio printing presses · CPC title