DE19715241A1 - Printing machine with printing cylinder gripper sheet feed and delivery - Google Patents

Abstract

The cylinder groups (11,18) are mirror-symmetrical to the horizontal bisector of preferred 60 deg angle (ALPHA) formed by the lines connecting the respective cylinder centres (9 and 13). The cylinder centre connecting lines of the cylinder group (11) lie above the bisector line (12) and set at an angle of less than 180 deg (BETA) thus 145 deg for preference in the clockwise direction relative the centre connecting lines of cylinders (13 and 15). The illustrating devices (16) serving cylinders (10) stand mirror-symmetric to the horizontal bisector line (12) and the linking rollers (20) are mirror-symmetric to the bisector of angle (GAMMA) formed by the line connecting the inking roller to the printing cylinder (14) centres. The system for cylinder (10) is of the anilox type whose inking (20) and metering (23) rollers are both mirror-symmetric to the angle (GAMMA) bisector.

Description

The invention relates to a printing press with at least one integrated device for describing printing forms Printing form cylinder.

It is a printing press with a sheet feeder and feeder sheet stack, elements for promoting a Bo to be printed gens to a feed line, feed mechanisms for sheet conveyance from the landing line to a print with three pressure saddles cylinder, this with at least one cylinder group, be consisting of an offset cylinder with two active surfaces and one Printing form cylinder with two active surfaces, interacts, and a delivery containing a delivery chain circle is known (U.S. Patent 5,469,787).

It takes two turns to make a multicolor print of the printing cylinder is required, only every second Pressure saddle fed a bow. Furthermore, only everyone a printed sheet is removed from the second pressure saddle.

Offset printers are also known as reproducers (DE-OS 32 33 021), in which the clamped on the printing form cylinder Print form assigned a device for writing / imaging is, the device for writing / imaging in a Printing machine of the aforementioned type can be integrated. The disadvantage of this machine configuration is the lack Complexity and compactness, the high space requirement as well as the poor usability.

The object of the invention is to create a printing press in Compact design.

According to the invention, the object is achieved by the claims solves.

Below is the inventive solution to an execution example explained in more detail.

Show in the drawings

Fig. 1 printing machine (schematic representation)

Fig. 2 arrangement of cylinder and roller cleaning device version 1

Fig. 3 arrangement cylinder and roller cleaning device version 2

Fig. 4 arrangement adjusting device Variant 1

Fig. 5 arrangement adjusting device Variant 2.

The printing machine in the four-color version contains a printing cylinder 1 with i = 3 printing areas 2.1 ; 2.2 ; 2.3 and i = 3 gripper series 3.1 , 3.2 and 3.3 . The printing cylinder 1 are elements 4 for conveying a sheet to be printed from a gene gene stack 5 and transfer to a pre-gripper system 6 transferring the sheet to the printing cylinder 1 . The sheet is fed to the impression cylinder 1 in such a way that only one sheet is fed to every two gripper rows 3 of the impression cylinder. The impression cylinder 1 is assigned to the delivery chain circuit as a delivery chain circuit 7 , which takes over the printed sheet from the impression cylinder 1 and transports it to the delivery sheet stack 8 . Here, too, an arc is removed only from every second gripper row 3 of the printing cylinder 1 .

Furthermore, the cylinder 1 two cylinder groups 11 ; 18 assigned. Each cylinder group contains an offset cylinder 9 with i mi nus 1, which is in operative connection with the Druckzy cylinder 1 , ie two active surfaces and a printing form cylinder 10 with i minus 1, ie two active surfaces, which is in active connection with the offset cylinder 9 .

The two cylinder groups 11 ; 18 are mirror images of a horizontal α-bisector 12 of an angle α, which is formed by the connecting lines of the two centers of the offset cylinder 9 of the pressure cylinder center 13 . So that the one cylinder group 11 above and the other cylinder group 18 below the α bisector 12 is arranged. The angle α is in the range of 60 °.

The connecting line printing cylinder center 14 / offset cylinder center 15 is arranged at the above the α-bisector 12 arranged cylinder group 11 at a ge measured clockwise angle β to the connecting line printing cylinder center 13 / offset cylinder center 15 . The angle β is less than 180 ° and is preferably in the range of 145 °.

Since the two groups of cylinders 11 , 18 are arranged in mirror image to the α-Win bisecting 12 , the angle β is measured at the cylinder group 18 arranged underneath the α-bisecting line in the counterclockwise direction with respect to the connecting line of the printing cylinder center 13 / offset cylinder center 15 .

An imaging device 16 is assigned to each printing form cylinder 10 . The direction of extension 17 of the Bebilderungseinrich device 16 , which corresponds to the effective direction thereof, extends in the direction of the printing forme cylinder center 14 and is at the cylinder group 11 located above the α-bisector 12 at an angle δ measured less than 90 ° in a clockwise direction, preferably in the range of 80 ° , to the connecting line of the printing form cylinder center 14 / offset cylinder center 15 .

In the case of the imaging device 16 , which is arranged in mirror image underneath the α bisector 12 , the angle δ is measured in the counterclockwise direction with respect to the connecting line printing plate cylinder center 14 / offset cylinder center 15 .

Each active surface of each printing form cylinder 10 is assigned a Einfärbsy stem 19 . The inking system contains an application roller 20 . The application rollers 20 assigned to the printing form cylinder 10 are mirror images of a horizontally arranged γ-bisector 21 of an angle γ, which the connecting lines of the two application roller centers 22 form with the printing form cylinder center 14 . The angle γ is in the range of 60 °.

According to one embodiment, the inking system 19 is designed as an anilox inking unit. The anilox inking unit contains, in addition to the support roller 20, an ink metering roller 23 to which a doctor box 24 is arranged.

The ink metering rollers 23 , like the application rollers 20, are arranged in a mirror image to the γ bisector 21 . The doctor boxes 24 assigned to the ink metering rollers 23 are arranged vertically one above the other.

The described machine configuration offers compactness, low space requirement and high user friendliness - all pressure works can be operated from one side - the advantage of space Economical arrangement of cleaning devices and actuators for cylinder starting and stopping and adjustment.

The cleaning device ( Fig. 2) for the pressure cylinder 1 and the two associated offset cylinder 9 is designed as a cylinder cleaning device 25 and on the α-bisector 12 stationary (second version) or on this slidably net (first version).

The cylinder cleaning device 25 is designed according to the first version as a cylinder cleaning device with a cleaning roller 26 , the center of which is slidably arranged on the α-bisector 12 , the cleaning roller 26 in the first position the two offset cylinders 9 and in the second position (dashed line) cleans the impression cylinder 1 . According to the second version, on the α-bisector 12 , the cylinder cleaning device 25 is arranged as a cleaning belt 28 , with pressing elements 29 pressing the cleaning belt 28 against one or both displacement cylinders 9 and / or the pressure cylinder 1 as required ( FIG. 3 ). This Zylin derreinigungseinrichtung according to the second version can also be arranged ver slidably on the α-bisector 12 . The cleaning device for the printing form cylinder 10 and the two associated applicator rollers 20 is as Walzenreinigungsein direction 27 are formed and acts similarly to the cylinder cleaning device provided in FIGS. 2 and 3 represent 25th For this reason, a separate representation has been dispensed with and the corresponding reference numerals have been entered in brackets in FIGS . 2 and 3 when using a roller cleaning device.

The on and off position of the offset cylinders 9 mounted in eccentric bearings 30 relative to the impression cylinder 1 and the pressure forme cylinders 10 and the adjustment of the offset cylinders 9 stored in eccentric bearings 30 relative to the impression cylinder 1 and / or the printing form cylinders 10 are performed by a cylinder adjusting device 31 .

The cylinder adjusting device 31 is slidably arranged on the α-bisector 12 and connected to the eccentric bearings 30 via one (variant 1 ) or two (variant 2 ) actuating elements 32 designed as adjusting cylinders. By means of the actuating element or elements 32 , the starting and stopping of the Offsetzy cylinder 9 is realized via a rotation of the eccentric bearing 30 ; the offset cylinders are turned off by the impression cylinder 1 and the impression cylinders 10 (dashed line).

For the cylinder position of the offset cylinder 9 , ie the adjustment of the pressure to the adjacent cylinders, the cylinder control device 31 contains an adjusting spindle 33 arranged in the direction of extension of the α-bisector 12, which interacts with a nut 34 to which the actuating elements 32 are articulated ( Variant 2 ; Fig. 5).

It is also possible (variant 1 ; FIG. 4) to direct the actuating element 32 to the adjusting spindle 33 guided in a bearing 35 .

Reference list

1

Impression cylinder

2nd

Printing area

2.1

first printing area

2.2

second printing area

2.3

third printing area

3rd

Row of grippers

3.1

first row of grabs

3.2

second row of grabs

3.3

third row of grabs

4th

element

5

Stack of feeder sheets

6

Forerunner system

7

Delivery chain circle

8th

Delivery sheet stack

9

Offset cylinder

10th

Printing form cylinder

11

cylinder group arranged above

12th

α bisector

13

Printing cylinder center

14

Printing form cylinder center

15

Offset cylinder center

16

Imaging device

17th

Extension direction

18th

cylinder group arranged below

19th

Coloring system

20th

Applicator roller

21

γ bisector

22

Applicator roller center

23

Ink metering roller

24th

Squeegee box

25th

Cylinder cleaning device

26

Cleaning roller

27

Roller cleaning device

28

Cleaning tape

29

Pressing element

30th

Eccentric bearing

31

Cylinder actuator

32

Actuator

33

Adjusting spindle

34

mother

35

camp
α Angle between the connecting lines Offset cylinder center

15

/ Printing cylinder center

13

β Angle between connecting lines center of printing cylinder

13

/ Offset cylinder center

15

and offset cylinder center

15

/ Pressure forme cylinder center

14

γ angle between the connecting lines of the printing form cylinder center

14

/ Application roller centers

22

δ angle between the connecting cylinder center connecting line

15

/ Printing form cylinder center

14

and the direction of extension

17th

the imaging device

16

Claims (13)

1. Printing machine with a printing cylinder with i printing areas and rows of grippers, which with a sheet feed and a sheet discharge from every second row of grippers and with at least two cylinder groups, each consisting of a printing form cylinder and an offset cylinder each with i-1 ≧ 2 active areas, Each active surface of the printing forme cylinder is assigned an inking system containing an application roller and each printing forme cylinder is associated with an imaging device, characterized in that the cylinder groups ( 11 ; 18 ) are mirror images of a horizontal α-Win bisecting ( 12 ) an angle (α) that the Connecting lines of the two centers of the offset cylinder ( 9 ) with the pressure cylinder center ( 13 ) form is arranged. 2. Printing machine according to claim 1, characterized in that the angle (α) is in the range of 60 °. 3. Printing machine according to claim 1, characterized in that the connecting line printing form cylinder center ( 14 ) / Offsetzy Lindermitte ( 15 ) of the above the α-bisector ( 12 ) arranged cylinder group ( 11 ) at a clockwise measured angle (β) less than 180 ° to the connecting line printing cylinder center ( 13 ) / offset cylinder center ( 15 ) is arranged. 4. Printing machine according to claim 1, characterized in that the angle (β) is in the range of 145 °. 5. Printing machine according to claim 1, characterized in that the printing form cylinders ( 10 ) associated Bebilderungsein directions ( 16 ) are arranged in mirror image with respect to the α-Winkelhal beers ( 12 ). 6. Printing machine according to claim 1, characterized in that the application rollers ( 20 ) in mirror image with respect to a γ-bisector ( 21 ) of an angle (γ), the connec tion lines of the application roller centers ( 22 ) with the printing form cylinder center ( 14 ) arranged are and the γ-Win bisecting ( 21 ) extends in the horizontal direction. 7. Printing machine according to claim 1, characterized in that the printing forme cylinder ( 10 ) associated inking systems ( 19 ) are equipped as anilox inking units, their application rollers ( 20 ) and ink metering rollers ( 23 ) mirror image with respect to the γ bisector ( 21 ) of an angle (γ) , which forms the connecting lines of the two applicator roller centers ( 22 ) with the printing form cylinder center ( 14 ), the γ-bisector ( 21 ) extends in the horizontal direction and the doctor boxes ( 24 ) are arranged vertically one above the other. 8. Printing machine according to claim 7, characterized in that the angle (γ) is in the range of 60 °. 9. Printing machine according to claim 1, characterized in that a cylinder cleaning device ( 25 ) for the Druckzylin ( 1 ) and the offset cylinder ( 9 ) on the α-Winkelhal beers ( 12 ) stationary or in the direction of extension of the α-bisector ( 12 ) displaceable is arranged. 10. Printing machine according to claim 1, characterized in that the offset cylinder ( 9 ) for starting and stopping and for Ver position in each case in an eccentric bearing ( 30 ) and the one or more on the eccentric bearings ( 30 ) attacking actuating elements ( 32 ) one in the direction of extension of the α-bisector ( 12 ) slidably arranged Zy cylinder actuator ( 31 ) are articulated. 11. Printing machine according to claim 7, characterized in that a roller cleaning device ( 27 ) for the printing plate cylinder ( 10 ) and the application rollers ( 20 ) on the γ-angle bisecting ( 21 ) and stationary or in the direction of extension of the γ-bisector ( 21 ) is slidably arranged. 12. Printing machine according to claim 5, characterized in that the direction of the printing form cylinder ( 14 ) extending direction ( 17 ) of the above the α-bisector ( 12 ) arranged imaging device ( 16 ) at a clockwise measured angle (δ) less than 90 ° to the line connecting the forme cylinder center ( 14 ) / Offsetzylin dermitte ( 15 ) is arranged. 13. Printing machine according to claim 12, characterized in that the angle (δ) is in the range of 80 °.