EP1088659A1 - Inking device - Google Patents

Abstract

The anilox roll (5) is rotatably mounted on play-free bearings (4) in the machine frame (1), and both ends of the anilox roll shaft (8) are connected to a stroke lever (7). The ink vats (9) are mounted on the levers and the application roll (10) is mounted between these levers. Each lever follows a stroke curve (17) around the printing cylinder (2).

Description

The invention relates to an inking unit of a printing press.

DE 195 23 378 A1 is a sheet-fed offset rotary printing press for multi-color printing consisting of forme cylinder, rubber cylinder and one with a plurality of controlled Gripper systems provided, central pressure cylinder known, forme cylinder and blanket cylinders of the same diameter and at least two printing surfaces each have and the number of gripper systems of the printing cylinder not equal to the number of Printing surfaces of the forme cylinder and the printing cylinder from at least a second Forme cylinder and blanket cylinder is assigned to an existing pair of cylinders. Each forme cylinder has two printing surfaces and each printing surface of the forme cylinder is its own short inking unit, consisting of inking roller, anilox roller and ink fountain, assigned. The inking rollers are alternately on and off the forme cylinder adjustable, only inking the assigned printing area.

The object of the invention is to provide an inking unit, the rollers for avoiding of effects caused by changes in position from the theoretical target position the color transfer can be carried out precisely.

According to the invention the object is achieved by the features of the patent claim; expedient configurations are disclosed in the subclaims.

Fig. 1 Prinzipschema Farbwerk

Fig. 2 Takthebelausbildung

Fig. 3 geteilte Lagerstelle.

The invention is described in more detail below using an exemplary embodiment. The drawing shows in

Fig. 1 schematic diagram inking

Fig. 2 timing lever training

Fig. 3 shared bearing.

1 shows the basic diagram of an inking unit of a printing press. A printing form cylinder 2 is rotatably mounted in the machine frame 1. An anilox roller 5 is also rotatably mounted in the machine frame 1 via bearing bushes 3 and first play-free bearings 4.
On the legs 8 of the anilox roller 5 6 timing levers 7 are mounted in second play-free bearings. The ink fountain 9 which is operatively connected to the anilox roller 5 is arranged on the clock lever 7.

The bearing point of the anilox roller 5 is split (Fig. 3).
An inking roller 10 is mounted in the clock levers 7. In the operating position, the inking roller 10 is operatively connected to both the anilox roller 5 and the printing form cylinder 5. The active connections are not shown in FIG. 1; A stretched representation was chosen for better clarity.
The inking roller 10 consists of a non-rotating thru axle 11 and a roller jacket 12 rotatably mounted on the non-rotating thru axle 11. An eccentric bearing 14 is mounted on both sides of the thru axle 11 in timing levers 7 via third play-free bearings 13. Elements for roller separation 15, ie elements for rotating the eccentric bearings, are arranged on the eccentric bearings 14. These elements for roller separation 15 are supported on the clock levers 7.
The timing levers 7 in turn are supported on the side facing away from the bearing point via a cam roller 16 on a timing curve 17 arranged on the printing form cylinder 2 (FIG. 2). The clock levers 7 are arranged on both sides of the machine frame 1, the clocking elements 18.
The formation of the inking roller 10 as a non-rotating thru axle 11 creates a synchronous cross-beam which ensures the necessary synchronism during roller separation and thus enables the use of play-free bearings.
Since the ink fountain 9 is mounted on the clock levers 7, there is no difference in speed between the doctor blade of the ink fountain 9 and the anilox roller 5 during clocking.
The inking unit, since the bearing point of the anilox roller 5 is designed as a split bearing, can be completely removed or preassembled; the inking roller 10 is also removable after separation of thru axle 11 / timing lever 7.
Due to the fact that the cam roller 16 lies in one plane with the clock lever bearing, there are no negative tilting moments.
By mounting the clock lever 7 on the legs 8 of the anilox roller 5, the clocking - movement in a small swivel angle - a rotary movement is superimposed and thus ensures that sufficient lubrication of the bearings is ensured despite the small swivel angle.

List of reference symbols

1

Machine frame

2nd

Printing form cylinder

3rd

Bearing bush

4th

first play-free camp

5

Anilox roller

6

second clearance-free camp

7

Clock lever

8th

leg

9

Paint box

10th

Inking roller

11

Thru axle

12th

Roller shell

13

third play-free camp

14

Eccentric bearing

15

Element for roller separation

16

Cam roller

17th

Clock curve

18th

element

Claims (4)

Inking unit of a printing press with a clocked, one in the machine frame stored printing form cylinder assigned inking roller, an anilox roller and a Ink fountain, characterized in that the anilox roller (5) in play-free bearings (4) is rotatably mounted in the machine frame (1), on the legs (8) of the anilox roller (5) on both sides a timing lever (7) on which the ink fountain (9) and in which the inking roller (10) are mounted, arranged and the clock movement of the clock lever (7) each on the printing form cylinder (2) arranged clock curve (17) takes place. Inking unit of a printing machine according to claim 1, characterized in that the in the clock levers (7) mounted inking roller (10) as a standing thru axle (11) rotatably mounted roller jacket (12) is formed. Inking unit of a printing machine according to claim 1, characterized in that for Roller separation, the inking roller (10) with an element for roller separation (15) connected eccentric bearing (14) is coupled. Inking unit of a printing machine according to claim 1, characterized in that the bearing point the anilox roller (10) divided and the anilox roller (5) including ink fountain (9) can be assembled or removed as an assembly.

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