DE19723147A1 - Printer machine driving method - Google Patents

Abstract

The printer driving method involves releasing the drive of the printing form cylinder from the drive wheel traction. The cylinder is driven by it's own drive in the illustrating operation at the illustrating speed. The drive of the cylinder in one operating phase position is linked into the drive wheel traction. The illustrating speed is above the maximum printing speed of the printer. The phase-identical position of the cylinder relative to the illustrating devices is identical with the printing start of the printing form mounted on the cylinder.

Description

The invention relates to a method and a device for driving a printing press with at least one integrated imaging device.

It is a printing press with at least one printing cylinder, one offset cylinder, one Printing form cylinder, an inking unit and an image associated with the printing form cylinder tion device known (DE 195 15 077 A1). The elements mentioned are by a Gear train connected to each other. When it comes to imaging the printing form cylinder, the color is can be separated from the gear train.

A disadvantage of this procedure is that the imaging takes a long time, since the imaging speed, i. H. the speed at which the printing form cylinder rotates during imaging, is identical to the maximum printing speed.

The object of the invention is to provide a method and a device which wel ches / which allows a high imaging speed and thus the time for imaging is minimized.

According to the invention the object is achieved by the features of the claims.

The inventive solutions are explained in more detail using an exemplary embodiment tert.

Show in the drawings

Fig. 1 printing machine (schematic diagram),

Fig. 2 assembly drive gear train,

Fig. 3 printing form cylinder.

The four-color version of the printing press shown in FIG. 1 contains a printing cylinder 1 with i = 3 printing areas 2.1 ; 2.2 ; 2.3 and i = 3 gripper rows 3.1 , 3.2 and 3.3 . The Druckzy cylinder 1 is a sheet feeder, consisting of a leading edge separator 4 and egg nem gripper system 6 , to promote a sheet to be printed on by a gene sheet stack 5 and transfer to the impression cylinder 1 . The sheets are fed to the printing cylinder 1 in such a way that only every second gripper row 3 of the printing cylinder is fed with a sheet. The printing cylinder 1 is associated with a display designed as a chain circle sheet discharge 7, which takes the printed sheet from the impression cylinder 1 and transported 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 two active surfaces that is operatively connected to the impression cylinder 1 and a printing form cylinder 10 with two active surfaces that is operatively connected to the offset cylinder 9 .

An imaging device 16 is assigned to each printing form cylinder 10 .

The cylinder - pressure cylinder 1 ; Offset cylinder 9 and printing form cylinder 10 - are shown in the operating phase position, with the active surfaces with the start of pressure 29 facing each other at the point of contact of the respective cylinder. In this operating phase position, the cylinders are connected to each other by the gear train.

The pressure beginnings 29 of the cylinders - pressure cylinder 1 and offset cylinder 9 of the second cylinder group 18 - are as shown in Fig. 1 opposite.

An inking unit 19 is assigned to each active surface of each printing form cylinder 10 . The inking unit 19 contains an application roller 20 .

According to the embodiment shown in Fig. 1, the inking unit 19 is designed as an anilox inking unit. In addition to the application roller 20 , the anilox inking unit contains an ink metering roller 23 , to which a doctor box 24 is assigned.

The printing machine acc. Fig. 1 is with two cylinder groups 11 ; 18 equipped with two offset cylinders, each with two active surfaces, two printing form cylinders, each with two active surfaces and four inking units, and thus works as a four-color machine.

When the press is equipped with two offset cylinders, each with one effective area, two The printing press works as printing forme cylinders with one effective area and 2 inking units each Two-color machine.

When the press is equipped with only one offset cylinder and one printing form cylinder the press operates as a one or two-color press.

In Fig. 2 the drive wheel train of the printing press is shown in the four-color version with two cylinder groups. The drive wheel train includes a motor 12 with a motor pinion 13 , an idler gear 14 , an impression cylinder drive wheel 15 , two offset cylinder drive wheels 17 , two impression cylinder drive wheels 21 , four applicator roller drive wheels 22 and four Farbdo sierantriebsheels 25th A self-drive 26 is assigned to the printing form cylinder.

The assignment of the self-drive 26 and the arrangement of the printing forme cylinder drive wheel 21 on the printing form cylinder 10 is shown in FIG. 3. The printing form cylinder 10 is assigned to the printing form cylinder drive wheel 21 via a phase clutch 27 . The printing form cylinder drive wheel 21 is arranged in the gear train of the printing press and meshes with the offset cylinder drive wheel 17 and the application roller drive wheel 22 . Self-drive 26 is assigned to printing form cylinder 10 via a metal bellows coupling 28 . The self-propulsion is designed as an electric motor.

The method according to the invention is characterized in a printing press with a cylinder group 11 or 18 in that the drive connection (drive connection 4 - in the operating phase position) between the printing plate cylinder 10 and the printing plate cylinder drive wheel 21 is released by means of the phase position coupling 27 and the printing plate cylinder is thus quasi separated from the drive wheel train and the printing form cylinder 10 is driven by the self-drive 26 in the imaging phase.

The speed of the printing form cylinder 10 during imaging, ie the speed of imaging is substantially above the maximum printing speed and is preferably 2-5 times the same.

This ensures that the time for imaging is reduced to a minimum and no loading stress on the other machine parts - the press is at a standstill occurs.

After the imaging and stopping of the self-propulsion, the printing form cylinder 10 is broken down into the drive wheel train again in the operating phase position by means of the phase position coupling 27 . As already stated, the operating phase position means that the pressure starts 29 face each other in relation to the cylinders which are in operative connection and that printing operation is possible.

In the method in a printing machine with two groups of cylinders by means of the Pha senlagekupplungen 27, the drive connections (drive connections in the operating phases were) between the printing form cylinders 10, and the printing forme cylinder drive wheels 21 solves ge and thus virtually the printing form cylinder 10 carved out of the drive wheel train.

By the own drive 26 , the printing form cylinder 10 are now driven at speed Bebilderungsge.

Here, in the retrieval mode, which falls in the run-up phase of the self-propulsion from standstill to imaging speed, the printing form cylinder 10 from the respective operating phase positions are brought into an in-phase position relative to the imaging devices 16 . Preferably, the in-phase position of the printing form cylinder 10 relative to the imaging devices 16 with the start of printing 29 is identical, ie that at the beginning of the imaging process, both printing form cylinders 10 face each other with their printing beginnings of the respective imaging device 16 .

After this synchronization, the printing form cylinder 10 are driven synchronously with Bebilderungsge speed.

After the imaging process, the printing form cylinders 10 are brought back into their respective operating phase positions.

This is done as described below:
The operating phase position of the respective printing form cylinder is overrun by the internal drive 26 , i.e. the internal drive is stopped after passing the operating phase position, then the printing form cylinder is incorporated into the drive wheel train and mechanical means (phase coupling) take over the exact starting of the operating phase position when the drive wheel train is started up.

In another variant, the operating phase is approached with the following process steps:
The self-propulsion of the printing form cylinder is stopped before reaching the operating phase position, then the printing form cylinder is integrated into the drive wheel train and mechanical means (phase coupling) take over the exact starting of the operating phase position when the self-propulsion is started.

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

Leading edge separator

5

Stack of feeder sheets

6

Forerunner system

7

Delivery chain circle

8th

Delivery sheet stack

9

Offset cylinder

10th

Printing form cylinder

11

first cylinder group

12th

engine

13

Drive pinion

14

Idler gear

15

Printing cylinder drive wheel

16

Imaging device

17th

Offset cylinder drive wheel

18th

second cylinder group

19th

Inking unit

20th

Applicator roller

21

Printing forme cylinder drive wheel

22

Applicator roller drive wheel

23

Ink metering roller

24th

Squeegee box

25th

Color metering drive wheel

26

Self-propelled

27

Phase coupling

28

Metal bellows coupling

29

Start of printing

Claims (12)

1. A method for driving a printing press with a printing cylinder and at least one cylinder group, consisting of an offset cylinder and a printing form cylinder, an imaging device assigned to the printing form cylinder, an inking device assigned to the printing form cylinder and a sheet feed and sheet discharge device, the cylinders including the inking unit being driven by a drive wheel train are connected, characterized in that

• - The drive of the printing form cylinder ( 10 ) is released from the drive wheel train,
• - The printing form cylinder ( 10 ) by means of a self-propelled in imaging operation with speed and speed
• - The drive of the printing form cylinder ( 10 ) in an operating phase position in the Antriebsrä derzug is incorporated.

2.Method for driving a printing press with a printing cylinder and at least two cylinder groups, each consisting of an offset cylinder and a printing plate cylinder, an imaging device assigned to each printing plate cylinder, at least one inking unit assigned to each printing plate cylinder, and a sheet feed and sheet discharge device, the cylinders including Inking unit are connected by a drive train, characterized in that

• - the drive of the printing form cylinders ( 10 ) is detached from the drive wheel train,
• - The printing form cylinder by means of a self-drive ( 26 )
  • - In the recovery mode from the operating phase positions in a relative to the Bebilderungsein directions ( 16 ) brought in phase and
  • - Driven synchronously with an imaging speed in the imaging mode
• - The printing form cylinder ( 10 ) brought into operating phases and
• - The drive of the printing form cylinder ( 10 ) is incorporated into the drive wheel train.

3. The method for driving according to claim 1 or 2, characterized in that the images speed is above the maximum printing speed of the printing press.   4. The method for driving according to claim 3, characterized in that the Bebilderungsge speed is in the range of 2-5 times the maximum printing speed. 5. The method for driving according to claim 2, characterized in that the in-phase position of the printing form cylinder ( 10 ) relative to the imaging devices ( 16 ) with the start of printing ( 29 ) of the printing form arranged on the printing form cylinder is identical. 6. The method for driving according to claim 2, characterized in that the pull-in operation is integrated in the run-up phase of the self-propulsion ( 26 ). 7. The method for driving according to claim 1 or 2, characterized in that the operating phase position of the printing form cylinder ( 10 ) run over by the self-propulsion ( 26 ) and the exact achievement of the operating phase position by means of mechanical means after the insertion of the printing form cylinder into the drive wheel train when starting up the same is realized. 8. The method for driving according to claim 1 or 2, characterized in that the operating phase position of the printing form cylinder ( 10 ) by stopping the self-propulsion ( 26 ) before reaching the operating phase position and the exact achievement of the operating phase position by means of mechanical means after the incorporation of the printing form cylinder in the drive wheels train and commissioning of the own drives is realized. 9. Device for driving a printing press with a printing cylinder and at least one cylinder group, consisting of an offset cylinder and a printing form cylinder, egg ner the imaging plate assigned imaging device, a printing plate cylinder assigned inking unit and a sheet feed and sheet discharge device, where at the cylinder including inking unit a drive wheel train are connected, characterized in that the printing form cylinder ( 10 ) is assigned a self-drive ( 26 ), the printing form cylinder drive wheel ( 21 ) is arranged rotatably on an axis of the same and via an axially acting phase position coupling ( 27 ) with the printing form cylinder ( 10 ) in one Operating phase position can be coupled. 10.Device for driving a printing press with a printing cylinder and at least two cylinder groups, each consisting of an offset cylinder and a printing plate cylinder, an imaging device assigned to each printing plate cylinder, at least one inking unit assigned to each printing plate cylinder, and a sheet feed and sheet discharge device, the cylinders including Inking units are connected to a drive gear train, characterized in that each printing form cylinder ( 10 ) is assigned a self-drive ( 26 ), the printing form cylinder drive wheel ( 21 ) is rotatably arranged on the same axis, and each has an axially acting phase position clutch ( 27 ) with the printing form cylinder ( 10 ) can be coupled into an operating phase position. 11. Device for driving according to claim 9 or 10, characterized in that the egg genantrieb ( 26 ) on the axis of the printing form cylinder ( 10 ) via a metal bellows coupling ( 28 ) flanged electric motor. 12. Device for driving according to claim 10, characterized in that the printing form cylinder ( 10 ) i = 2 printing areas, each printing area is assigned an inking unit ( 19 ) and the printing cylinder ( 1 ) is equipped with i + 1 printing areas.