EP1044814B1 - Device for cleaning the surface of bearer rings of rotating cylinders in rotary presses - Google Patents

Description

The present invention relates to a device for cleaning the surfaces of Bearings on rotating cylinders in rotary printing machines for printing Newspapers and other commercial products.

US 3,952,654 discloses an additional device for cleaning cylindrical Surfaces, e.g. B. for cleaning the blanket surface of a blanket cylinder in an offset printing machine. The device comprises a sponge unit made by a pair of pneumatic cylinders is supported so that the sponge unit located above the outer surface of the cylindrical surface to be cleaned. in the activated state of the pneumatic cylinder, the sponge unit is in Wiping contact with the cylindrical surface moves. One elongated one Spray tube is mounted on the sponge unit and with a pressurized one Cleaning fluid source connected. The spray tube has two sets of openings on, one set of the sponge unit and the other set of the cylindrical Surface is facing. The liquid is drained during a cleaning process the openings of the spray tube and directed to the sponge unit and the cylindrical Surface next to the nip. The concentration of the spray liquid on this point causes a streak-free sponge cleaning of the cylindrical surface. The sponge unit is attached to an extended angle arm and the spray tube is in turn attached to the sponge unit. For attaching the Sponge unit and the spray tube are a variety of screws and Wing nuts used for quick disassembly and maintenance To allow disassembly of the device. An upright sign isolates the cleaning device from the rest of the press to prevent that flying particles contaminate the ink roller system. An integrated Control system enables simultaneous pressure supply to the Cleaning fluid reservoirs, the sprayer and the pair of cylinders that the Sponge moved to the surface to be cleaned.

US 2,330,491 relates to a lubrication device for on printing unit cylinders Printing machine attached bearer rings, which are used during the operation of the printing machine their peripheral part are in rolling contact with each other under pressure. On compliant lubricating wick is attached such that it is in wiping contact with the circumferential part of a bearer ring and the required amount of Applies lubricant that is supplied to the lubricating wick by a device. Thus, a lubricant cushion in the contact area of the interacting Bearings created and friction reduced.

US 4,704,964 and US 4,893,562 each relate to a bearer wiper device, the individual stretchable arms in the form of a pneumatic Press plunger, which is provided for each bearer ring of a printing press are. The pneumatic plungers are pivoted on a support so that they move in a swivel ratio; and at the outer end of everyone A plunger wiper unit is provided for the plunger. The plungers are held in position by a snap mechanism and each wiper unit has an L-shaped pad that is carried on each plunger Mounting frame is releasably attached. The part of each contacting the bearer ring The cushion has a recess so that it separates from the bearer rings Can collect particles in it.

US 4,162,652 discloses an apparatus for the continuous cleaning of Bearings in printing machines. This device has a carrier in the form of a Plate on, which is pivoted on a frame, so that this to the bearer ring moved to and from this. The end part of the carrier is generally in the axial direction orientates a first scraper in the form of a squeegee made of stiff but durable Material and a second scraper in the form of a relatively soft, oiled rod Felt attached. The carrier is biased to allow simultaneous contact of the scrapers with the bearer ring surface. The first scraper is like this orientated that it forms a slight angle to the bearer ring axis and thus that of Material scraped off the bearer ring is pushed sideways to continuously to be removed. The second scraper is placed in the carrier in a pocket and can, when viewed in the direction of rotation, be indexed to a new position in the pocket, when its current edge is worn. One in the wearer's movement path attached stop prevents the carrier on the surface of the bearer ring scrapes when the scrapers are worn. It is a second stop or locking stop provided on which the carrier in the raised position against one Preload is locked to make cleaning the cylinder easier.

US 5,704,290 relates to a device for cleaning bearer rings on rotating ones Printing cylinders. The bearer rings are at least on the respective end faces two cylinders attached to a certain distance between each Achieve axes of the two cylinders. The bearer rings are each with the two Cylinders turn and roll against each other while in continuous contact stand together. The device comprises at least one cleaning element, the by a pressure generating means in contact with the surface of each the bearer rings and can be moved away from them. The cleaning element can be impregnated with a liquid.

The existing bearer wiper elements are in slots and Sheet guiding devices of sheet printing machines inserted and by means of spring force clamped. If maintenance is neglected, it is difficult to replace it. On insufficient maintenance of the bearer wiper elements can, however, lead to defects Bear bear rings.

Accordingly, it is an object of the present invention to provide a bearer ring cleaning device in a rotary printing press to create which one enables quick replacement of the wiping element or elements contained in it.

This object is achieved by the features of claim 1.

Further features of the invention are contained in the subclaims.

The solution according to the invention has the advantage that the used Quick clamping element always has a sufficiently large clamping force on the wiping element is exercised, which prevents the latter from cleaning the surface of the Schmitzrings is pulled. By rotating the quick-clamping element in the clamping position, the wiping element is further preferably automatically one subject to certain clamping force so that the operator has no adjustment or Adjustment.

According to a first embodiment of the present invention, this is Quick-clamping elements attached to a bracket. The bracket has one vertically extending opening and the quick-release element is within this Opening movably arranged. In a release position of the quick clamping element the wiping element is released from the clamping force and can therefore be easily used by the operator be replaced.

In a clamping position of the quick-clamping element, in which this by a Rotational movement of the same is brought, a certain predetermined clamping force exerted on the wiping element.

In this embodiment of the invention, the quick clamping element is preferred formed as a first and a second jaw. A rotary movement of the Clamping jaws within the opening create one that acts on the wiping element Clamping force that does not require any adjustment or adjustment by the operator. In addition, this clamping force when moving the wiping element in its Maintain the clamping position in relation to a face ring surface to be cleaned.

According to a further embodiment of the present invention, the Quick-clamping element can be designed as an eccentric with respect to a fixed Terminal block is movably attached. When the eccentric rotates by one Axis of rotation, the wiping element is from the eccentric against the fixed terminal block crowded and fixed between the eccentric and the terminal block. The axis of rotation, around which the eccentric is rotatable, is arranged offset with respect to the center of the eccentric. In other words, the clamping force on the wiping element is the same Embodiment of the invention by a cooperation between the Wiping element and a corresponding surface portion of the eccentric generated.

The present invention is particularly suitable for use in Web printing machines for newspaper printing or in sheet printing machines Production of other commercial print products, but can also be done in others Printing machines are used.

The features of the present invention will become apparent in the following description preferred embodiments in connection with the accompanying, below listed drawings explained in more detail.

Fig. 1

eine Draufsicht eines für den Zeitungsdruck verwendeten Druckwerks;

Fig. 2

eine Teilansicht einer bekannten Reinigungsvorrichtung für die Oberflächen von sich in einem Druckwerk befindlichen Schmitzringen;

Fig. 3

eine Seitenansicht eines Druckwerks gemäß Fig. 1;

Fig. 4

eine perspektivische Ansicht einer bekannten Stützvorrichtung für ein Wischelement;

Fig. 5

das erfindungsgemäße Schnellklemmelement in einer Freigabeposition;

Fig. 6

das Schnellklemmelement der Fig. 5 in einer Klemmposition;

Fig. 7

eine weitere erfindungsgemäße Ausführungsform des Schnellklemmelements in einer Freigabeposition; und

Fig. 8

das Schnellklemmelement der Fig. 7 in einer Klemmposition.

Show it:

Fig. 1

a plan view of a printing unit used for newspaper printing;

Fig. 2

a partial view of a known cleaning device for the surfaces of bearers located in a printing unit;

Fig. 3

a side view of a printing unit according to FIG. 1;

Fig. 4

a perspective view of a known support device for a wiping element;

Fig. 5

the quick-clamping element according to the invention in a release position;

Fig. 6

5 in a clamping position;

Fig. 7

a further embodiment of the quick clamping element according to the invention in a release position; and

Fig. 8

7 in a clamping position.

Fig. 1 shows a printing unit 1, which has two side walls 2, 3, in which rotating Cylinders 4, 5, 6 and 7 are mounted (see also Fig. 3). Between the rotating ones Cylinders 4, 5, which can be blanket cylinders of an offset printing press, is one Path movement plane 10 defined, which is perpendicular to the plane of the drawing in FIG. 1 extends. The rotating cylinders 6, 7 are each plate cylinders on which Printing plates can be arranged either side by side across the width of the respective plate cylinder and / or around their circumference. On the face Bearings 16 are attached to each rotating cylinder 4, 5, 6 and 7. The surface 17 of a respective bearer ring 16 is an inventive one Assigned cleaning unit 11 (see Fig. 5).

2 shows the bearer surface cleaning units 11 'of a printing unit of the prior art in detail.
A holder 20 is attached in a housing-like support device 14, as is shown in detail in FIG. 4. The holder 20 can be moved by means of a pin 15. A strip-shaped wiping element 12 is fastened between the surface of the holder 20 and a corresponding surface section of the support device 14. As shown in FIG. 2, the wiping element 12 is in contact with the surface 17 of a bearer ring 16 over part of its length, which makes it difficult to replace the wiping element. There is also a tendency that the wiping element is pulled through the slot formed between the holder 20 and the surface part of the support device 14 to the surface 17 of the bearer ring 16. In this known construction, furthermore, the clamping force exerted on the wiping element 12 cannot be increased in order to prevent the wiping element 20 from sliding through the slot-shaped opening between the holder 20 and the corresponding surface section of the support device 14.

Fig. 3 is a side view showing the printing unit of Fig. 1 in detail.
The printing unit 1 with its two side walls 2, 3 comprises a right and a left pair of printing cylinders 4, 6 and 5, 7, which extend on both sides of the web movement plane 10. Color is supplied to the rotating plate cylinder 6 from an inking unit 8, which is covered with a protection 13, and color is supplied to the rotating plate cylinder 7 from an inking unit 9, which is likewise covered with a protection 13. At the upper end of the side walls 2, 3, cleaning units 11 are attached, which are assigned to the surfaces of the bearer rings 16, which are located on the blanket cylinders 4, 5 on their respective end faces. A wiping element 12 belonging to the cleaning unit 11 is fastened in the cleaning unit 11 by means of a pin 15. The inking units 8, 9, which are not described in detail here, are preferably short inking units, ie they comprise a relatively low number of rollers.

Fig. 4 shows a conventional support device for a wiping element.
The support device 14 of the surface cleaning unit 11 'shown in FIG. 2 comprises a holder 20 which is arranged rotatably about an axis 19. The bracket 20 is movable by means of the pin 15. The strip-shaped wiping element 12 is accommodated in the slot 18 formed between the surface of the holder 20 and the surface of the support device 14 (see FIG. 2).

Fig. 5 shows a quick release element according to the present invention, which is in the release position.
A bracket 20 is attached near the surface 17 of a bearer ring 16. The holder 20 has an opening in which a first and a second clamping jaw 21, 22 are arranged. When the wiper element 12 rotates in the direction indicated by the arrow 23, the lower part of the wiper element 12 contacts the surface 17 of the respective bearer ring 16, as shown in FIG. 6.

6 shows the quick-clamping element according to the present invention in one Clamping position. In this position, the jaws 21, 22 are in the Clamping position 32 shown, while Fig. 5, the release position 33 of the Jaws 21, 22 reproduces. 6, however, the wiping element 12 was in its turned the vertical position and thus contacts the surface 17 of the bearer ring 16. From Fig. 6 of the present invention it can be seen that by the first and the second Clamping jaw 21, 22 which also rotate when the wiping element 12 is rotated, one high clamping force is exerted on the wiping element 12. The distance of the spatial Arrangement of the wiping element 12 between it from the bearer ring surface 17 parked position and its position on the bearer ring surface 17 identified by reference numeral 26, the letter A being the width of the overlapping area. The rotational movement of the wiping element 12 in Direction of arrow 23 is by rotating the clamping elements around them Center axis 25, e.g. B. via a pin 15 of FIG. 4, not shown comparable lever achieved. Thus, in the first embodiment of the invention through the use of two jaws 21, 22 which are in an opening 24 a Bracket 20 are rotatably arranged, a quick and effortless placement of the Wiping element 12 can be achieved. The jaws 21, 22 are preferred coherent and can also be made of an elastic material be made.

A second embodiment of the quick clamp element according to the present invention is shown in Figs. 7 and 8. An eccentric 28 is opposite a terminal block 27 arranged, which is rotatable about an axis of rotation 29. The axis of rotation 29 is in a distance from the center 31 of the eccentric 28. When the wiping element 12 with the The surface 34 of a bearer ring 12 is out of contact, the eccentric 28 is in its parked release position 33, d. H. the eccentric 28 has its Axis of rotation 29 moves and is pivoted away from the terminal block 27. To do that To bring the wiper element 12 into contact with the surface 34 of the bearer ring 16, the eccentric 28 z. B. by means of a lever corresponding to pin 15 of FIG. 4 rotated into the clamping position 32, the upper part of the wiping element 12 against the Terminal strip 27 is pressed and clamped with this, as shown in Fig. 8 is. In the clamping position 32 of the wiping element 12 there is an overlay or a overlapping area 30 of width A between the terminal block 27 and the Wiping element 12, with the wiping element 12 being in a specific position the surface 34 of the respective one assigned to the printing couple cylinders 4, 5, 6, 7 Bearings 16 is fixed.

The wiping element 12, which in the first exemplary embodiment is provided with clamping jaws 21, 22 or in the second embodiment by one with the terminal block 27 cooperating eccentric 28 can be fixed accordingly, advantageously can be replaced quickly and easily. The wiping element 12 can also with a Lubricant source are connected to the wiping element 12 with a Lubricants, e.g. B. oil to supply.

LIST OF REFERENCES

1

Printing unit (Fig. 1)

2, 3

side walls

4, 5

Blanket cylinder

6, 7

plate cylinder

8, 9

inking

10

Train movement plane

11

Cleaning unit for the bearer ring surface 17

12

wiping element

13

protection

14

Support device (Fig. 2)

15

Pin (Fig. 3, 4)

16

Schmitz ring

17

Surface of the bearer ring 16

18

slot

19

Axis of the bracket 20 (Fig. 5, 6)

20

bracket

21, 22

Clamping elements / jaws

23

arrow

24

Opening the bracket 20

25

Center axis of the wiping element 12

26

Difference in the spatial arrangement of the wiping element 12

27

Terminal strip (Fig. 7, 8)

28

eccentric

29

axis of rotation

30

overlay

31

Center of the eccentric 28

32

Clamping position of the jaws 21, 22 adjusted position of the wiping element 12

33

Release position of the jaws 21, 22 parked position of the wiping element 12

34

Surface of the bearer ring 16

Claims (10)

1. Apparatus for cleaning the surface (17, 34) of bearer rings (16) on rotating cylinders (4, 5, 6, 7) in rotary printing machines, having a wiping element (12) which can be set against the surface (17, 34) and fixed with respect to a holder (20) by means of a clamping device, characterized in that the clamping device comprises a quick-action clamping element (21, 22; 27, 28, 29, 30), which can be rotated from a first release position (33), in which the wiping element (12) is held such that it can be moved with respect to the quick-action clamping element (21, 22; 27, 28, 29, 30), into a second clamping position (32) in which the wiping element (12) is held in a fixed position with respect to the surface (17) by the quick-action clamping element (21, 22; 27, 28, 29, 30).
2. Apparatus according to Claim 1, characterized in that the quick-action clamping element comprises first and second clamping jaws (21, 22) which can be rotated within an oval opening (24) formed within the holder (20) and between which the wiping element (12) is held.
3. Apparatus according to Claim 2, characterized in that when the clamping jaws (21, 22) are being moved into the clamping position (32), they rest on the side edges of the opening (24) and, in order to produce a clamping force, are forced by the latter against the wiping element (12) arranged between the clamping jaws (21, 22).
4. Apparatus according to either of Claims 2 and 3, characterized in that the clamping jaws (21, 22) are designed to be resilient.
5. Apparatus according to one of Claims 2 to 4, characterized in that the clamping jaws (21, 22) are connected to each other.
6. Apparatus according to Claim 1, characterized in that the quick-action clamping element comprises an eccentric (28), which is arranged such that it can be rotated with respect to a clamping bar (27) in such a way that the wiping element (12) is clamped in and fixed between the clamping bar (27) and the surface of the eccentric (28) when the eccentric (28) is rotated into the clamping position (32).
7. Apparatus according to Claim 6, characterized in that the eccentric (28) deforms the surface of the wiping element (12) by a predefined width A in order to produce a predefined clamping force in an overlapping region (30).
8. Apparatus according to one of the preceding Claims 1 - 7, characterized in that the quick-action clamping element is automatically fixed in the clamping position (32) in order to prevent the wiping element (12) moving back from the clamping position (32) into the release position (33).
9. Apparatus according to one of the preceding Claims 1 - 8, characterized in that the quick-action clamping element is rotated through 90° during a movement from the release position (33) into the clamping position (32).
10. Apparatus according to one of the preceding Claims 1 - 9, characterized in that the quick-action clamping element is produced from elastic material.

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