EP1361055A2 - Drive for an oscillating roller - Google Patents

Abstract

Distribution drive comprises a drive mechanism coupled to a drive and having at least one pinion gear (8) coupled to a gear (10). A first bolt (17) arranged on one side surface of the gear passes through a second bolt (22) to form a pivot (20). The second bolt is held at one end in a bearing arm (23) to form a sliding hinge (21). The bearing arm is coupled to a roller (3) to form a further hinge. An Independent claim is also included for an alternative distribution drive.

Description

The invention relates to a friction drive for a Roll in a processing machine, especially in a Printing machine, according to the preamble of claims 1 and 2.

[State of the art]

A friction drive of this type is known from DE 26 21 429 A1 known. The friction drive serves the axially changing Drive of a rotatably drivable roller, here as a grater referred to in a printing press. The roller is preferred Part of an inking unit, which is made up of several rollers, including multiple friction rollers. Everyone The friction roller is a separate drive for the axial friction movement (also called traversing movement) and this rubbing movement is adjustable in its phase position. The friction mechanism consists of an axial rigid, with a curved groove provided by a Sliding stone pot is included. On the sliding stone pot is one in the Curving groove of the socket engaging via a double lever arranged sliding block connected to the friction roller. The Sliding stone pot is adjustable in the circumferential direction and axially arranged movably.

The disadvantage here is that the rubbing mechanism due to the components used, such as socket with curved groove, Sliding stone pot and double lever, structurally relatively complex is executed. From the point of view of the often limited This training is only installation space in the printing press limited use.

OBJECT OF THE INVENTION

The invention has for its object a trituration drive of the type mentioned at the outset to create the Avoids disadvantages, in particular an improved Has rubbing mechanism and a small space needed.

The task is solved by the training features of Claim 1 and 2. Further developments result from the subclaims.

A first advantage is due to the fact that the friction drive for a roller, especially as a friction roller, overall has a compact design and in the processing machine requires little space. Furthermore, the Friction drive of the friction roller with a small number of parts in space-saving training can be realized can also be produced inexpensively.

It is also advantageous that the friction drive for the rollers are universal in processing machines, in particular Printing machines, preferably with friction rollers of ink and / or dampening in offset printing machines, can be used is.

It is also advantageous that the drive for the rotational movement the friction roller at one end of the friction roller and the Drive for the rubbing movement on the opposite End of the friction roller is arranged. The bilateral Distribution of the drives for the rotational movement and for the rubbing movement of the friction roller causes both Pages require a relatively small amount of space. In the corresponding The friction drive for the friction roller is the friction application and / or the traversing stroke (axial friction stroke) adjustable. There is an interruption of the Drive for the rotational movement of the friction roller is not required. If necessary, an interruption can also be implemented, by the rotary drive by means of an actuatable Clutch can be stopped or switched on again.

It is also advantageous that the axial displacement stroke of the Roller on the gear of an input mechanism is fixed, or stepped or continuously adjustable. For this the gear has a fixed arrangement or graded or infinitely adjustable bolt, which is parallel to the axis Axis of the drivable gear can be arranged. In a Training is the bolt aligned with the gear axis can be arranged so that the friction stroke is zero if required is.

Another advantage is that when several friction rollers are arranged, for example in an inking unit of an offset printing press, the drives for the rotational movement are arranged on one side of the processing machine and the drives for the rubbing movement of the friction rollers are arranged on the opposite side. All drives for the rotational movement are coupled to one another. The drives for the friction movement are also coupled to one another.
If several friction rollers are arranged, for example in an inking unit, the assigned friction drives are preferably of identical construction. The friction insert can be freely selected through the intervention of a traction device. A traction mechanism gear with a pulley per friction roller can preferably be arranged on each drive side of the friction rollers. Alternatively, a separate drive for the rotational movement and / or a separate friction drive can be arranged for each friction roller. For example, alternatively, centrally or separately controllable individual drives can be used per friction roller.

[Examples]

Fig. 1

ein Farbwerk mit mehreren Reiberwalzen in Seitenansicht,

Fig. 2

einen Eintriebsmechanismus,

Fig. 3

einen Verreibungsantrieb in erster Ausbildung mit dem Eintriebsmechanismus gemäß Figur 2 (Schnitt A-A),

Fig. 4

den Verreibungsantrieb gemäß Figur 3 (Schnitt B-B),

Fig. 5

einen Verreibungsantrieb in zweiter Ausbildung, und

Fig. 6

eine Seitenansicht von Figur 5 (Schnitt C-C).

The invention will be explained in more detail using an exemplary embodiment. The following schematically show:

Fig. 1

an inking unit with several friction rollers in side view,

Fig. 2

an input mechanism,

Fig. 3

a trituration drive in a first embodiment with the drive mechanism according to Figure 2 (section AA),

Fig. 4

the friction drive according to Figure 3 (section BB),

Fig. 5

a friction drive in second training, and

Fig. 6

a side view of Figure 5 (section CC).

An inking unit for a processing machine, preferably an offset printing machine, has a form cylinder 1, which carries a printing form. There is a print-ready Print form fixable on the form cylinder or one on the Forme cylinder fixed printing form is directly exposed. alternative is the forme cylinder 1 (without printing form or printing plate) formed such that an image, an image and re-imaging directly on the forme cylinder 1 is feasible.

With the forme cylinder 1 are several inking rollers 2 in Functional connection, which in turn friction rollers 3 in contact assigned. The friction rollers 3 are still with ink rollers 4 coupled. Overall, there is a closed one Single drum roller for an inking unit. A friction roller 3 is with a dosing system in functional connection, which in the present Example by a lifter roller 5 and an ink fountain roller 6 is formed with assigned ink fountain. The Lifting roller 5 is known to take ink from the ink fountain roller 6 and transfers them to the single drum roller so that the printing form on which the forme cylinder 1 is colored itself. Alternatively, the dosing system is also using a Film roller feasible.

At each end of the friction roller 3 there are individual friction drives 11 arranged. All trituration drives are preferred for this purpose 11 identical in construction and all friction drives 11 are on the same side of the offset press, for example, the B side. Every friction drive 11 is with an upstream input mechanism 7 coupled.

Each input mechanism 7 has a pulley 12, each pulley 12 being endless with at least one revolving traction means 13, for example a toothed belt, is coupled. The traction means 13 is fixed to the frame, rotatably mounted guide rollers 15, preferably at least one deflection roller 15 as a tension roller for the traction means 13 is formed. The traction means 13 is also included a technically connected to a controller Drive motor 14 coupled. The drive motor 14 carries one with the traction means 13 coupled drive pulley.

Each input mechanism 7 is preferred by the already mentioned pulley 12 and a pinion gear 8 are formed, the pulley 12 and the pinion gear 8 on one shaft journal 9 with pinion axis 25 mounted in a frame are rotatable. The pinion gear 8 is also on a gear shaft 18 with gear axis 16 arranged gear 10 engaged.

In a preferred embodiment, the pinion gear 8 and that Gear 10 is designed as a worm gear. The pinion gear 8 is preferably the worm and the gear wheel 10 is the worm wheel. The gear axles of pinion axis 25 (Pinion gear 8) and the gear axis 16 (gear 10) here at an angle of 90 ° to each other in spaced planes staggered. Such a worm gear runs low noise and is inside the processing machine Can be arranged to save space.

The input mechanism 7 with pulley 12, pinion gear 8 and gear 10, the friction drive 11 is arranged downstream. For this is on one end face (side surface) of the gear 10 preferably parallel to the gearwheel axis 16 (laterally offset parallel) a first bolt 17 is arranged. This first one Bolt 17 is preferably off-center to the gear axis 16 and preferably fixed (non-detachable) on the gear 10. there corresponds to the size of the offset of the first pin 17 Gear axis 16 the size of the desired axial friction stroke the friction roller 3.

In one development, the first pin 17 is on the gearwheel 10 can be moved (releasable), for example by moving on Gear 10 a radially extending slot or more concentric holes to accommodate this bolt 17 are arranged. Thus, the first pin 17 is concentric to the gear axis 16 variable positioning and fixable. In a further embodiment, the bolt is 17th releasably on one side surface of the gear 10 and in alignment can be arranged to gear axis 16. With this centric arrangement the axial friction stroke is zero and the friction roller 3 can only be driven in rotation.

In a first embodiment, the first bolt 17 penetrates a second bolt 22. The axes of these cross at right angles. The first bolt 17 forms with the second Bolt 22 is a swivel joint 20. The second bolt 22 is in each case at the end in a bearing arm 23 axially movable and is a sliding joint 21 at the end there is thus a rotary / push joint 20, 21. The bearing arm 23 is at one end for receiving the second Bolt 22 bent on both sides and on the opposite End of the bearing arm 23 is rotatable with the friction roller axis 19 a further swivel joint 27 coupled to the friction roller 3. The second pin 22 is thus at the end in two sliding joints 21 stored.

In summary, the friction drive 11 is the first Training at least from the coupled with a drive Input mechanism 7 with at least one with the gear 10 coupled pinion gear 8. On a side surface of the Gear 10, the first pin 17 is arranged, which with the second pin 22 forms the pivot 20 by the first bolt 17 penetrates the second bolt 22. The second Bolt 22 forms with the bearing arm 23 the sliding joint 21, by the second bolt 22 in the bearing arm 23 at both ends sliding movement is included. The bearing arm 23 is around Grater roller axis 19 rotatable to form another Swivel joint 27 coupled at the end to the roller 3.

The mode of operation is as follows: From the pulley 12 the drive is on the pinion 9 on the pinion gear 8 initiated and from the pinion gear 8 to the gear 10 transfer. The gear 10 rotates about the gear axis 16 and the first pin 17 rotates centrally when arranged the gear axis 16 or preferably eccentric at concentric Arrangement to the gear axis 16. During the rotational movement of the gear 10, the first pin 17 rotates in the swivel joint 20 and the second pin 22 performs an axial movement in the sliding joint 21. At the same time, the bearing arm 23 through the bolts 17, 22 in the direction of the friction roller axis 19 axially back and forth and thus the friction roller 3 in an axial rubbing movement along the friction roller axis 19 offset.

In a second embodiment, the input mechanism 7 (Pulley 12, pinion gear 8 and gear 10) analogous to first training. The first bolt 17 is also arranged on the gear 10, but penetrates a rotatable axially fixed in a swing arm 24 Hinge pin 28. The hinge pin 28 is in at both ends one swivel joint 20 is mounted in the swing arm 24. The Swing arm 24 has a recess 29, which as a free space serves for the sliding movement of the first bolt 17. The first bolt 17 protrudes into this recess 29. The first Bolt 17 and the hinge pin 28 form a sliding joint 21 and the hinge pin 28 forms with the swing arm 24 a swivel joint 20. In terms of transmission technology, there is therefore a swivel / push joint 20.21 before. The swing arm 24 is on the friction roller 3 rotatably supported at the end in the swivel joint 27 swings with the rotary / push joint 20, 21 on a guide curve 26. The end positions of the swivel joint 20 are in FIG. 6 indicated by positions 20 'and 20' '.

In summary, the friction drive 11 is second Training at least from the coupled with a drive Input mechanism 7 with at least one with the gear 10 coupled pinion gear 8. On a side surface of the Gear 10, the first pin 17 is arranged, which with the hinge pin 28 forms a sliding joint 21. Penetrates the first pin 17 the hinge pin 28. The hinge pin 28 forms the swivel joint 20 with the swing arm 24, by pivoting the pivot pin 28 in the swing arm 24 is. The swing arm 24 is rotatable about the friction roller axis 19 forming the further hinge 27 at the end coupled to the roller 3.

The mode of operation is as follows: From the pulley 12 the drive via the pinion gear 8 onto the gear 10 transferred and the first bolt 17 rotates centrically or eccentric around the gear axis 16. During the rotation of the Gear 10 (with the first pin 17) leads this first Bolt 17 in the hinge pin 28 a sliding movement in the axial direction the bolt 17 from (sliding joint 21) at the same time the hinge pin 28 moves in the swing arm 24 (swivel joint 20) and the swing arm 24 swings in the swivel 27 around the Grater roller axis 19. At the same time the axial friction movement transferred to the friction roller 3.

The use of trituration is individual due to the intervention of the Traction means can be set on each pulley 12. alternative is instead of the traction means 13 also a single drive per friction roller 3 can be arranged.

[ List of reference numerals ]

1

form cylinder

2

Inking roller

3

distributor roller

4

ink roller

5

vibrator roller

6

Ink fountain roller

7

Input drive mechanism

8th

pinion gear

9

shaft journal

10

gear

11

Verreibungsantrieb

12

pulley

13

traction means

14

drive motor

15

guide rollers

16

gear axis

17

first bolt

18

gear shaft

19

Reiber roll axis

20

swivel

21

sliding joint

22

second bolt

23

bearing arm

24

swing arm

25

pinion axis

26

guide curve

27

swivel

28

hinge pins

29

recess

Claims (7)

Friction drive for a roller in a processing machine, preferably in a printing machine, each with a separate drive for the axial friction movement and for the rotational movement of the roller,
characterized in that an input mechanism (7) coupled to a drive has at least one pinion gear (8) which is coupled to a gear (10),
that a first pin (17) is arranged on a side surface of the gearwheel (10) and, together with a second pin (22), forms a swivel joint (20) in that the first pin (17) penetrates the second pin (22),
that the second pin (22) forms a sliding joint (21) with a bearing arm (23), in that the second pin (22) is received at the end in the bearing arm (23), and
that the bearing arm (23) is coupled to the roller (3) to form a further swivel joint (27). Friction drive for a roller in a processing machine, preferably in a printing press, each with a separate drive for the axial friction movement and for the rotational movement of the roller,
characterized in that an input mechanism (7) coupled to a drive has at least one pinion gear (8) which is coupled to a gear (10),
that a first pin (17) is arranged on a side surface of the gearwheel (10) and forms a sliding joint (21) with a joint pin (28) by the first pin (17) penetrating the joint pin (28),
that the hinge pin (28) forms a swivel joint (20) with a swing arm (24) in that the hinge pin (28) is rotatably mounted in the swing arm (24), and
that the swing arm (24) is coupled to the roller (3) to form a further swivel joint (27). A friction drive according to claim 1 or 2,
characterized in that the first pin (17) is non-detachably arranged on the side surface of the gear (10). A friction drive according to claim 1 or 2,
characterized in that the first pin (17) is detachably arranged on the side surface of the gear (10) and can be variably positioned concentrically to the gear axis (16) of the gear (10). A friction drive according to claim 1 or 2,
characterized in that the first pin (17) is detachably arranged on the side surface of the gearwheel (10) and can be arranged in alignment with the gearwheel axis (16) of the gearwheel (10). A friction drive according to claim 1,
characterized in that the second pin (22) is supported at the end in two aligned sliding joints (21) and the bearing arm (23) is cranked on both sides to receive the second pin (22). A friction drive according to claim 2,
characterized in that the swing arm (24) has a recess (29) into which the first bolt (17) protrudes and receives the hinge pin (28) at both ends in the swivel joint (20).

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