# US 5,341,735 A · Rotary printing machine system with synchronized multiple printing machine units or stations

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- Number: US 5,341,735 A
- Document ID: US5341735A
- Status: Granted
- Kind: A
- Application number: 08/108,064
- Filed: 1993-08-17
- Granted: 1994-08-30
- Earliest claimed: 1991-08-17
- Assignees: MAN Roland Druckmaschinen AG
- Inventors: Josef Hajek
- Web page: https://patentgrep.com/patent/US5341735A

## CPC

- B41F 13/0008: {Driving devices (B41F13/004 and B41F13/008 take precedence)}
- B41F: PRINTING MACHINES OR PRESSES (manifolding devices or office printing machines B41L)

## Abstract

To facilitate expansion of modular printing units (1, 2, 3) and particularly vertical expansion into tower printing stations (1-4; 2-5; 3-6), each printing unit, with its own printing cylinder (20)and drive motor (8-13), has associated therewith a power take-off unit (14-19; 53-56) which, via a right-angle drive, synchronizes a horizontal synchronizing shaft (21) with individual vertical synchronizing shafts (22, 23, 24) of two-tier or two-level or tower printing stations. The power take-off units include continously engaged gears, including bevel gears (79, 80, 81) coupling together the synchronizing shafts and, additionally, coupling a clutch part (76, 78) of the power take-off unit, so that, upon engagement with a second clutch part (77, 75), the synchronizing shaft, individual drive motors (8-13) and the printing cylinder can be coupled together or, upon disengagement of the clutch parts, the motor can drive the individual printing cylinder, independently of synchronized continuous rotation of the horizontal and vertical synchronizing shafts (21, 22-24).

## Claims

### Claim 1

Rotary printing machine system with a plurality of synchronized printing machine units (1-6; 44-47),
at least one of said units (4, 5, 6) being located above another one of said units (1, 2, 3) to thereby define upper units (4, 5, 6) and lower units (1, 2, 3), and an upper and a lower unit together defining a tower printing station,
each of said units having a printing cylinder (20) carrying an image to be printed, and a printing cylinder shaft (59) coupled to the printing cylinder;
at least one horizontal synchronizing shaft (21, 38, 57) extending through the plurality of said lower machine units (1, 2, 3);
a vertical synchronizing shaft (22, 23, 24) coupling together the lower and upper printing units of a tower printing station (1, 4; 2, 5; 3, 6),
said synchronizing shafts (21, 38, 22, 23, 24) coupling the units together into a synchronized, coordinate printing machine system,
wherein, in accordance with the invention,
each printing machine unit has an individual drive motor (8-13) directly associated therewith, said motor having a motor shaft which is mechanically coupled to the printing cylinder shaft (59) of the printing cylinder (20) of the unit
in combination with
an individual power take-off unit (14-19; 53-56) directly associated with each printing machine unit,
said power take-off unit including
a right-angle drive transmission (14) having
means (81-80) for coupling the horizontal synchronizing shaft (21, 38) via a right-angle drive to the vertical synchronizing shaft (22, 23, 24) of the printing unit for synchronizing the lower and upper units of a tower station; and
means (81-79; 72) for positively, selectively coupling or uncoupling the motor drive shaft of the individual drive motor (8-13) of the unit, and hence the printing cylinder shaft (59) of the printing cylinder, to or from said right-angle drive transmission and hence from both the horizontal synchronizing shaft (21, 38, 57) and the vertical shaft (22, 23, 24) of the printing machine unit, whereby the vertical synchronizing shaft (22, 23, 24) of said tower station (1, 4; 2, 5; 3, 6) will be in continuous synchronous driving engagement with the horizontal synchronizing shaft (21, 38) while permitting selective individual engagement or disengagement of the printing cylinder shaft (59) of any one printing cylinder (20) and the drive motor (8) coupled thereto of any one unit to or from the synchronized, coordinate printing machine system; and
wherein the power take-off units of the printing machine units of the printing machine system are essentially similar.

### Claim 2 (depends on 1)

The system of claim 1, wherein the printing units are offset printing machine units having at least one plate cylinder and at least one blanket cylinder; and
wherein the respective drive motor (8-13) is in directly coupled driving connection with the plate cylinder of the associated printing unit.

### Claim 3 (depends on 1)

The system of claim 1, wherein the right-angle drive transmission of the power take-off units (14-19, 53-56) comprises bevel gears (79, 80);
rotary power transmission means (31, 25, 58, 60) coupled to said printing cylinder shaft (59) and to said motor (8) for transferring power from the individual drive motor (8-13) to said printing cylinder shaft;
rotary power transfer means (90, 91), coupled to said printing cylinder shaft (59), and
wherein said means for selectively coupling or uncoupling the power take-off unit comprises a positive engagement clutch (72) selectively coupling together said rotary power transfer means (90, 91) and said right-angle drive transmission, for selectively transmitting rotary power and positioning information between said horizontal synchronizing shaft (21, 38) and the vertical synchronizing shaft (22, 23, 24) of a tower unit through said rotary power transfer means to the printing machine cylinder shaft (59), and to permit, selectively, transfer of rotary power from the individual drive motor (8-13) of any one unit only to the associated printing cylinder or, selectively and upon engagement of said clutch (72), between the associated printing cylinder and at least one of said drivingly coupled synchronizing shafts (21, 38; 22, 23, 24).

### Claim 4 (depends on 1)

The system of claim 1, wherein the power take-off units (14-19; 53-56) each include
rotary power transmission means (31, 25, 58, 60) coupled to said printing cylinder shaft (59) and, respectively, to the individual drive motor (8, 13) for transferring power from the individual drive motor to said printing cylinder shaft;
rotary power transfer means (90, 91) coupled to said printing cylinder shaft (59);
wherein said means for selectively coupling or uncoupling the power take-off unit comprises a positive engagement clutch (72) having a first clutch element (77) and a first clutch connection means (75) coupled to said rotary power transfer means and hence to said printing cylinder shaft (59), and a second clutch element (78) and a second clutch connection means (76);
wherein said right-angle drive transmission comprises at least two bevel gears (80, 81), one of said bevel gears (81) being coupled to said horizontal synchronizing shaft (21, 38, 57) and another one (80) of said bevel gears being coupled to the vertical synchronizing shaft (22, 23, 24), and a further gear means (79) being coupled to the second clutch connection means (76); and
wherein all said bevel gears and the further gear means are in continuous meshing engagement.

### Claim 5 (depends on 4)

The system of claim 4, wherein the further gear means is a bevel gear (79) in coupled engagement with one (80, 81) of said bevel gears.

### Claim 6 (depends on 1)

The system of claim 1, further including coupling means (61-67) separating said horizontal synchronizing shaft (21, 38, 57) into shaft sections or portions (21, 21a, 21a').

### Claim 7 (depends on 1)

The system of claim 1, further including coupling means (63, 63a, 64, 65) separating said vertical shaft (22, 23, 24) into shaft sections or portions (22a, 22a').

### Claim 8 (depends on 1)

The system of claim 1, wherein said system comprises at least two tower printing stations;
two horizontal synchronizing shafts (21, 38) are provided, one forming a lower level synchronizing shaft (21), and coupled to the power take-off unit (14, 15, 16) of the lower units (1, 2, 3),and the other one (38) forming an upper horizontal synchronizing shaft (38) coupling together the power take-off units (17, 18, 19) of the upper printing units (4, 5, 6) and, additionally, coupled via the power take-off units (17, 18, 19) to the vertical synchronizing shafts (22, 23, 24).

### Claim 9 (depends on 8)

The system of claim 8, wherein said horizontal and vertical synchronizing shafts (21, 38; 22, 23, 24) interconnect said printing units into an interconnected synchronized grid or loop.

### Claim 10

In a rotary printing machine system having a plurality of synchronized printing machine units (1, 2, 3; 44-47), each of said units having a printing cylinder (20) carrying an image to be printed and a printing cylinder shaft (59) coupled to the printing cylinder;
an individual drive motor (8-13) associated with and coupled to a shaft (59) of an associated printing cylinder;
at least one horizontal synchronizing shaft (21, 38, 57) extending through the plurality of said printing machine units (1, 2, 3), said synchronizing shaft coupling the units together into a synchronized printing machine system,
wherein each printing machine unit has an individual power take-off unit (14, 15, 16) directly associated therewith, said power take-off unit including
vertical synchronizing shaft connection means (22a, 22a');
a right-angle drive transmission (14) having means (80, 81) for coupling the horizontal synchronizing shaft (21, 38) to the vertical synchronizing shaft connection means (22a) of the associated printing unit to permit synchronization of the respective lower printing unit with said vertical shaft connection means; and
means (81-79; 72) for positively selectively coupling or uncoupling the individual drive motor of the respective unit, and hence the printing cylinder shaft (59) of the respective printing cylinder (20), to or from said right-angle drive transmission, and hence from both the horizontal synchronizing shaft (21, 38) as well as the vertical shaft connection means (22a, 22a') of the respective printing machine unit,
whereby the vertical shaft connection means (22a, 22a') will be in continuous synchronous driving engagement with the horizontal synchronizing shaft (21), while permitting selective individual engagement or disengagement of the printing cylinder shaft (59) of any one printing cylinder, and the drive motor (8-13) coupled thereto of any one unit to or from the synchronized coordinate printing machine system; and wherein the power take-off units of the printing machine units of the printing machine system are essentially similar.

### Claim 11 (depends on 10)

The system of claim 10, wherein the right-angle drive transmission of the power take-off units (14-19, 53-56) comprises bevel gears (79, 80);
rotary power transmission means (31, 25, 58, 60) coupled to said printing cylinder shaft (59) for transferring power from the individual drive motor (8-13) to said printing cylinder shaft;
rotary power transfer means (90, 91), coupled to said printing cylinder shaft (59), and
wherein said means for selectively coupling or uncoupling the power take-off means comprises a positive engagement clutch (72) selectively coupling together said rotary power transfer means (90, 91) and said right-angle drive transmission, for selectively transmitting rotary power and positioning information between said horizontal synchronizing shaft (21, 38) and the vertical synchronizing shaft connection means (22a, 22a') through said rotary power transfer means to the printing machine cylinder shaft (59), and to permit, selectively, transfer of rotary power from the individual drive motor (8-13) of any one unit only to the associated printing cylinder or, selectively and upon engagement of said clutch (72), between the associated printing cylinder and said selectively drivingly coupled synchronizing shafts (21, 38) or said vertical synchronizing shaft connection means (22a, 22a').

### Claim 12 (depends on 11)

The system of claim 11, including a further bevel gear (79) in coupled engagement with one (80, 81) of said bevel gears.

### Claim 13 (depends on 10)

The system of claim 10, further including coupling means (61-67) separating said horizontal synchronizing shaft (21, 38, 57) into shaft sections or portions (21, 21a, 21a').