DE19532670B4 - Drive for sheet-fed rotary printing machines - Google Patents

Abstract

Drive for sheet-fed rotary printing machines with multiple printing units, wherein adjacent arc-guiding cylinder (8, 9) are in meshing with their gears, so that a closed gear train is present and on a gear (16) of the gear train by a single-motor drive by means of pinion (15) of the drive Sheet-fed rotary printing machine, characterized in that the power applied by the motor (10) is transmitted via torque distribution with power compensation by two engaging in the gear (16) of the gear train pinion (15), wherein a on a rocker (14) mounted drive pinion (13) with two in the gear (16) of one of the sheet-guiding cylinder (8, 9) engaging pinions (15) is in meshing engagement.

Description

The The invention relates to a drive for sheet-fed rotary printing machines with several printing units, with adjacent bow-guiding cylinder with their gears meshing so that a closed gear train is present Is and on a gear of the gear train by a single-motor drive by means of pinion drive the sheet-fed rotary printing machine he follows.

Single drives, over the the entire drive power fed into sheet-fed rotary printing presses will have been known for a long time.

Known are z. B. single-motor drives, via a V-belt with her Drive pinion in the gear of a transfer drum or a printing cylinder intervention.

adversely on such a pinion drive with drive transmission via the gear train is that of the drive pinion radial forces on the driven gear and thus transferred to the bearing of the sheet-guiding cylinder that become bending forces on the cylindrical leg and thus to negatively influence the Print image can lead.

Besides that is disadvantageous that a very large Load of intermeshing Teeth of Pinion and gear occurs. These disadvantages are the greater, depending longer the sheet-fed rotary printing machine is.

From the DE 41 36 195 C1 is known a drive for sheet-fed rotary printing presses, with a plurality of printing units, wherein adjacent arc-guiding cylinder are in mesh with their gears, so that a closed gear train is present.

From the German utility model 7,319,412 a drive device for a ring gear on two pinion (multi-motor drive) is known. This drive connection is used in fine grinding mills or grinders for the mining and cement industry, where large and very difficult to turn drums or cylinders to be driven. The ring gear at least two drive pinion are assigned, which are driven by a respective motor.

adversely At this drive is the great technical Effort that results from the two or more individual drives. In addition, will through this document no teaching mediates what action are to be used on a sheet-fed rotary printing press with a Single-motor drive occurring between the drive pinion and the drive gear personnel to keep small.

outgoing Of the disadvantages of the prior art, it is the task of Invention, a drive for Create sheet-fed rotary printing presses that are simple in construction is and in which using a Einmotorenantriebes and at only a driven gear in the gear train on the tooth pairing Drive pinion / drive gear and the bearing acting forces reduced become.

According to the invention Asked task by the characterizing features of the first claim solved.

The Invention is based on the assumption that on sheet-fed rotary printing presses the advantages of a single-motor drive with only one input point in the gear train should be used. The inevitably resulting from this especially in long machines Disadvantages, such as large input and bearing forces on the drive gear, should be reduced.

at Retention of the single-motor drive and a drive-in point (input drive In a cogwheel of a bow-guiding Cylinder) was therefore in surprising Way found a drive, the before input to the gear train a Torque sharing with power compensation allows.

Even though at gear drives the possibility of Torque sharing with power balancing has long been known nobody made use of such solutions to printing presses so far use. The drive is simple in construction and with low To produce effort.

By the input into a gear of the gear train via two pinions are the acting on the gear bearing bearing forces and the tooth forces of the meshing with each other Teeth on the Eintriebsstelle reduced.

Based an embodiment the invention will be described in more detail below to be discribed. in the accompanying drawings show:

1 Two printing units of a sheet-fed rotary printing press with a single-motor drive

2 : another variant of the single-motor drive schematically in side view

3 : 2 in plan view

4 : Power split by means of differential gear

1 shows in a schematic representation Plant printing unit 1 and a follow-up printing unit 2 a sheet-fed rotary printing machine. Shown are the feed table 3 , the pre-gripper 4 and the feed drum 5 , The printing unit 1 . 2 consists of the plate, rubber and impression cylinder 6 ; 7 ; 8th as well as the two printing units 1 ; 2 connecting sheet guiding cylinder 9 ,

The drive is described on a sheet-fed rotary printing machine with double-large impression cylinder 8th and double-large sheet guiding cylinder 9 and with only one sheet guiding cylinder 9 between the printing units 1 ; 2 , However, the drive can also be used on sheet-fed rotary printing presses with single-large sheet-guiding cylinders 8th ; 9 and a plurality of bow guide cylinders 9 between the printing units 1 ; 2 ,

The drive, which is designed as a single-motor drive according to the embodiment according to 1 , has the following structure:

A V-belt 11 is between an engine 10 and a V-belt pulley 12 intended. The V-belt pulley 12 is on the drive shaft of a drive pinion 13 attached. The drive pinion 13 is on a swingarm 14 stored. The drive pinion 13 are two sprockets 15 associated with the drive pinion 13 in mesh. The pinions 15 are stored stationary, and they stand with the gear 16 the sheet guiding cylinder 9 in connection.

Another variant of the power compensation via a rocker 14 demonstrate 2 (Side view) and 3 (Top view). According to this embodiment are for the drive of the drive pinion 13 used existing adjacent gears. The drive pinion 13 is also after this variant on a swingarm 14 stored. The drive pinion 13 is as a double gear 13 . 13.1 educated. The gear 13.1 is from an idler 18 driven, with one with the V-belt pulley 12 firmly connected further gear meshes. The two pinions 15 again stand with the gear 16 the sheet guiding cylinder 9 in the tooth mesh.

Another variant of the torque split shows 4 ,

According to this drive variant, the power balance between the two takes place in the gear 16 the sheet guiding cylinder 9 driving pinions 15 via a differential gear with a first planetary gear set 21 , a second planetary gear set 19 the footbridge 20 and a central wheel 22 , The pinions 15 are each as a double gear 15 . 15.1 ; 15 . 15.2 formed, of which one directly from the second Umlaufrädersatz 19 and the second over the jetty 20 of the differential gear, which is in the central wheel 22 engages, is driven. The V-belt pulley 12 is directly with the first Umlaufrädersatz 21 connected. The central wheel 22 grabs the other double gear 15 . 15.2 one.

In the embodiments, the two pinions engage 15 in the gear 16 the sheet guiding cylinder 9 one. However, it is also possible to drive the gear of a printing cylinder 8th or in any other gear of the gear train to initiate.

The mode of action of the drive according to the invention is the following:
The drive torque required for the operation of the sheet-fed rotary offset printing press is directly ( 1 ) or indirectly ( 2 - 3 ) from the engine 10 on the two pinions 15 and transferred from these to the main wheel train. By the assignment of the two pinions 15 to the gear 16 a moment distribution takes place. By the storage of the drive pinion 13 on a swingarm 14 the power compensation is ensured, ie that of each pinion 15 on the gear 16 transmitted moment is approximately equal.

1

Plant printing unit

2

Follow printing unit

3

feed table

4

pregrippers

5

feed drum

6

plate cylinder

7

rubber cylinder

8th

pressure cylinder

9

Sheet guiding cylinder

10

engine

11

fan belt

12

pulley

13

pinion

14

wing

15

pinion

16

gear

17

18

idler

19

second Epicyclic set

20

web

21

first Epicyclic set

22

central wheel

Claims (5)

Drive for sheet-fed rotary printing presses with several printing units, wherein adjacent arc-guiding cylinders ( 8th . 9 ) are meshed with their gears, so that a closed gear train is present and on a gear ( 16 ) of the gear train by a single-motor drive by means of pinion ( 15 ) the drive of the sheet-fed rotary printing machine, characterized in that the from the engine ( 10 ) applied power via torque distribution with power compensation by two in the gear ( 16 ) of the gear train engaging pinion ( 15 ), wherein one on a rocker ( 14 ) stored drive pinion ( 13 ) with two in the gear ( 16 ) one of the sheet-guiding cylinders ( 8th . 9 ) engaging pinions ( 15 ) is in meshing engagement. Drive according to claim 1, characterized in that the pinions ( 15 ) the impression cylinder ( 8th ) assigned. Drive according to claim 1, characterized in that the pinions ( 15 ) the sheet guiding cylinder ( 9 ) assigned. Drive according to claim 1, characterized in that the drive pinion ( 13 ) directly via a V-belt ( 11 ) from the engine ( 10 ) is driven. Drive according to claim 1, characterized in that the drive pinion ( 13 ) via intermediate wheels ( 18 ) from the engine ( 10 ) is driven.