JP2905015B2 - Drive for sheet-fed rotary printing presses - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The invention relates to a drive for a sheet-fed rotary printing press of the type described in the preamble of claims 1 and 6. .

[0002]

2. Description of the Related Art Drives for sheet-fed rotary printing presses in which the individual printing units are connected by intermeshing gear trains are known (for example, Germany). No. 2,334,177 and U.S. Pat. No. 2,115,975). It is also known that each printing unit has its own drive transmission in the gear train (East German Patent No. 159).
862). The disadvantages of gear trains that engage each other are:
It is not possible to avoid that the printing units influence each other based on vibrations, errors and the like. The different drive moments result in a considerable increase in the load on the drive element, which leads to premature wear of the drive and to poor print quality of the printed product. The use of intermeshing gear trains requires complex solutions to achieve phase shift in duplex printing (eg Utility Model 831 of the Federal Republic of Germany).
No. 9431).

[0003]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to avoid the disadvantages known in the prior art.

[0004]

This object is achieved according to the invention by a drive for a sheet-fed rotary printing press according to the invention according to the characterizing features of claims 1 and 6. Was done.

[0005] Further advantageous configurations are described in the other claims.

[0006]

The drive according to the invention ensures a uniform torque distribution to the individual printing units.
In the case of a machine having a duplex printing unit, an E-clutch for each printing unit is arranged in the drive shaft. The use of a separate compact gear train and E-clutch in the drive shaft for each printing unit makes switching from one-sided printing to two-sided printing very simple. In order to cause a phase shift, a predetermined portion of the drive shaft may be cut off. Since the number of printing units can be increased arbitrarily for torques of the same magnitude, a multi-color sheet-fed rotary printing press with, for example, 10 printing units is obtained according to the component unit principle. Due to the independent printing unit, possible printing errors can be detected quickly (direct error detection) and possible leaks can be reduced.

[0007] The use of a single size gear facilitates assembly. If the bearing diameter is formed to be larger than the diameter of the cutting edge circle of the gear, for example, pulling out the gear at the time of attaching the barrel becomes unnecessary.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The sheet-fed rotary printing press shown in FIGS. 1 and 2 comprises six printing units 1 to 6 in a row-type construction. Each printing unit has an impression cylinder, blanket cylinder, plate cylinder and transfer drum, but it is also possible to use a sheet turning drum instead of the transfer drum. The cylinder and the journal of the transfer or turning drum support gears and each printing unit uses intermediate gears,
It has a separate compact gear train that is disconnected from the front or rear printing unit. The required drive output is supplied by a drive motor 7, which drives via a V-belt drive 8 a connectable drive shaft 9 extending along the machine. From the drive shaft 9, a drive transmission 10 for each printing unit branches off, which drive drive gear 10 is of the same size as the intermediate gear 15 in the printing unit 1 and of the compact gear train directly in the subsequent printing units 2 to 6. Of the transfer drum or turning drum gear 13. A separate compact gear train for each printing unit, which is decoupled from the preceding or following printing unit, in the embodiment shown is a single transfer drum gear 13, intermediate gears 15 to 18 and a single gear. Is formed by arranging the impression cylinder gear 12 having a size of

When a sheet turning drum is used instead of the transfer drum, an E-clutch 11 is arranged in the drive shaft 9 for each printing unit. To switch from single-sided printing to double-sided printing, it is only necessary to disconnect the drive shaft 9.

A synchronizer 20 is arranged in the sheet delivery area between the transfer drum or the sheet turning drum and the impression cylinder. The synchronizing device 20 comprises, for example, a prismatic body arranged on the transfer drum and a roller (catch-fork principle) arranged on the impression cylinder or a ring segment engaging with each other.

In each printing unit, a torque adjusting mechanism 19 is arranged, which is preferably connected on the operating side to the respective impression cylinder. Thus, for example, a braking device formed by at least a gear pump can be used.

The sheet-fed rotary printing press shown in FIGS. 3 and 4 has a basic construction corresponding to that of the sheet-fed rotary printing press shown in FIGS. 1 and 2.

The drive transmission 10 is connected directly to the double impression cylinder 14 in all printing units. A separate compact gear train for each printing unit is formed in the embodiment shown by arranging a double size impression gear 14, intermediate gears 16, 17, 18 and a single size transfer drum gear 13. ing. The synchronizer 20 and the torque adjusting mechanism 19 are configured according to the embodiment of FIGS.

In another embodiment (not shown), each drive train 10 is engaged by an intermediate gear 15, which can be directly or via another intermediate gear 16. Together with the impression cylinder gear 12 of one size or the transfer drum gear 13 of one size, a separate compact gear train is formed for each printing unit.

[Brief description of the drawings]

FIG. 1 shows a sheet-fed rotary printing press having a separate compact gear train and a number of printing units each having a single-size impression cylinder gear and a single-size drum gear per printing unit. FIG.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 shows a sheet-fed rotary printing press having a separate compact gear train and a number of printing units each having a double-size impression cylinder gear and a single-size drum gear per printing unit. FIG.

FIG. 4 is a plan view of FIG. 3;

[Explanation of symbols]

1, 2, 3, 4, 5, 6 printing unit 7 drive motor 8V belt drive 9 drive shaft 10 drive transmission 11 E / clutch 12, 14 impression cylinder gear 13 transfer drum or turning drum gear 15, 16, 17, 18 Intermediate gear 19 Torque adjustment mechanism 20 Synchronizer

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Harald Bayer Rothgau, Germany 3 A Insteinstrasse 8 (56) References JP-A-57-212059 (JP, A) JP-A-63-117864 (JP, A) JP-A-64-44749 (JP, A) JP-A-3-42247 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B41F 7/02-7/14 B41F 13 / 00

Claims (11)

(57) [Claims] 1. A drive for a sheet-fed rotary printing press arranged in rows, comprising a drive transmission provided for each printing unit and a connectable drive shaft extending along the machine. And wherein each printing unit has at least one cylinder of at least twice the size of the sheet, each printing unit (1,2,3,4,5 , 6) have a separate compact gear train (1) decoupled to the adjacent printing unit.
2,18,16,13), the compact gear train comprising a single-size impression cylinder gear (12), a single-size transfer drum gear (13), and these gears At least two intermediate gears (1
5,16,18) and it is formed from the respective drive transmission (10), and wherein <br/> that are directly engaged with the transfer drum gear separate compact gear train (13) Drive for a sheet-fed rotary printing press. 2. The drive according to claim 1, wherein the transfer drum gear (13) is configured as a turning drum gear (13). 3. The drive according to claim 1, further comprising a synchronizing device arranged in the sheet transfer area between the transfer drum or the turning drum and the impression cylinder. 4. Each printing unit (1, 2, 3, 3)
2. The drive device according to claim 1, wherein a torque adjusting mechanism is arranged at each of the drive units. 5. A drive for a sheet-fed rotary printing press arranged in rows, comprising a drive transmission provided for each printing unit and a connectable drive shaft extending along the machine. Each printing unit guides the sheet
In the type having at least one cylinder of at least twice the size , each printing unit (1,2,3,4,5,6) is disconnected from an adjacent printing unit. Separate compact gear train (1
4,18,16,13), the compact gear train comprising a double-size impression cylinder gear (14), a single-size transfer drum gear (13) and these gears At least two intermediate gears (1
6,18) and they are formed from the respective drive transmission (10), characterized in that it directly engages the other pieces of the compact gear train of the impression cylinder gear (14), the sheet Drive for rotary printing presses. 6. The drive according to claim 5 , wherein the transfer drum gear (13) is configured as a turning drum gear (13). 7. The drive according to claim 5 , wherein a synchronizer (20) is arranged in the sheet transfer area between the transfer drum or the turning drum and the impression cylinder. 8. Each printing unit (1, 2, 3, 3)
6. The driving device according to claim 5 , wherein a torque adjusting mechanism is arranged at each of the torque adjusting mechanisms. 9. A sheet-fed rotary printing press arranged in rows.
A driving device for each of the printing units
It has a transmission and a connectable drive shaft extending along the machine.
Each printing unit guides the sheet
Having at least one body at least twice as large
Type of printing unit
(1, 2, 3, 4, 5, 6) are adjacent printing units
Separate compact gear train (1
2,18,16,13) and this compact
The gear train is composed of a single-size impression cylinder gear (12) and a single-size impression cylinder gear (12).
Size transfer drum gears (13) and these
At least two intermediate gears (1
5, 16, 18), each drive transmission (10) being engaged with a transfer drum gear (13) of a separate compact gear train via an intermediate gear (15); Alternatively, each drive transmission (10) is a separate compact gear train impression cylinder gear (1).
A drive for a sheet-fed rotary printing press, characterized in that it is engaged with 2) via an intermediate gear (15). 10. Sheet-fed rotary printing arranged in rows
Drive for the printing press, and a drive provided for each printing unit.
Dynamic transmissions and connectable drive shafts extending along the machine
Each printing unit guides the sheet
At least one body that is at least twice as large
Each printing unit
(1, 2, 3, 4, 5, 6) are adjacent printing units
Separate compact gear train (1
4, 18, 16, 13)
The gear train consists of a double-size impression cylinder gear (14) and a single-size
Size transfer drum gears (13) and these
Least two intermediate gear arranged between the gear (1
6,18) and they are formed from the respective drive transmission (10), and Turkey have engaged via an intermediate gear (15) to the transfer drum gear separate compact gear train (13) A drive for a sheet-fed rotary printing press, characterized by: 11. Sheet-fed rotary printing arranged in rows
Drive for the printing press, and a drive provided for each printing unit.
Dynamic transmissions and connectable drive shafts extending along the machine
Each printing unit guides the sheet
At least one body that is at least twice as large
Each printing unit
(1,2,3,4 5 6) are adjacent printing units
Separate compact gear train (1
2,18,16,13) and this compact
The gear train is one time larger in the first printing unit (1)
Impression cylinder gear (12) of size and at least two intermediate gears
(15, 16, 18) and a subsequent mark
1 times larger in printing unit (2,3,4,5,6)
-Sized impression cylinder gear (12) and transfer of one size
-Drum gear (13), and arranged between these gears
From at least two intermediate gears (15, 16, 18)
And each drive transmission (10) is formed
Separate compact teeth in the first printing unit (1)
Printing unit on intermediate gear (15) of the train and following
(2,3,4,5,6) separate compact gear
Row of transfer drum gears (13) or turning
Being engaged with the drum gear (13),
Drive for sheet-fed rotary printing presses.