EP2130675B1 - Roller closing device with an inner and outer part and intermediaries - Google Patents

Abstract

Roller lock comprises an elastic body formed as a rolling membrane arranged between an inner part (01) and an outer part (02). The elastic body exerts a force radially between the inner part and outer part. Preferred Features: The outer part is formed as a frame. The inner part is formed as a holder connected to a roller of a printing machine. The outer part is fixed in the printing machine. The elastic body is arranged in the frame. The holder holds a pin arranged on the front side of the roller.

Description

The invention relates to a roller lock with an inner part and an outer part according to the preamble of claim 1.

Inking units or dampening units in printing presses are used to convey the printing ink required for the printing process or the required dampening solution from corresponding supply devices to the printing zone. To form the required color film or dampening film rolls or cylinders are provided in the inking or dampening unit. The terms roller and cylinder have an equivalent meaning for the understanding of the present invention. The rolls come to rest in so-called roll strips, so that the ink film or dampening solution film in the roll strip can be transferred from one roll to another roll. In such inking or dampening units adjustable rollers are provided in a machine frame, so can be changed by adjusting these adjustable rollers mounted relative to the other rollers of the contact pressure in the roller strip.

By the DE 15 61 014 C1 is known in one direction adjustable roll bearing, in particular for friction and application rollers of inking units on printing machines, wherein adjusting means are provided for adjusting the roller transversely to its axis, wherein the adjusting means between a bearing wall connected to the bearing pin and receiving a roll end, preferably cup-shaped housing are mounted, wherein the bearing pin and the housing are connected by the adjusting means counteracting spring elements. In this case, the spring elements are preferably as radially extending rubber buffers and the acting on the bearing adjustment means either as a radially arranged adjusting screw or as two arranged at 45 ° adjusting screws. According to a further embodiment, the pitching or stopping of the roller and thus the adjustment of the roller bearing can also be arranged by two diametrically arranged in the interior of the housing, acted upon with air or a liquid pressure chambers, wherein the oppositely acting pressure chambers are pressurized depending on the desired direction of action optionally.

By the WO 02/074542 A2 and its priority-giving DE 101 13 313 A1 Devices are known for adjusting a contact pressure of an adjustably mounted roller, wherein a surrounding a holder membrane forms in a gap between the holder and a surrounding sleeve four pressure chambers. The gap between the holder and the surrounding sleeve is open and unprotected.

By the DE 39 10 827 A1 a cylinder-piston unit for moving a roller transverse to its longitudinal axis is known, wherein between the piston designed as a piston, arranged transversely to the longitudinal axis of the roller piston and the inner cylinder wall, there is an annular gap, wherein the annular gap bridging scraper ring and two in the axial direction of the Reciprocally spaced, the annular gap sealing units are each provided with an elastic sealing ring, wherein the scraper ring and the sealing rings bearing support rings are radially displaceable according to a transverse displacement of the piston in the cylinder. The scraper ring and the sealing rings thus follow the transverse displacement of the piston essentially without any change in shape.

The invention has for its object to provide a roller lock with an inner part and an outer part.

The object is achieved by the features of claim 1.

The adjusting means, which is preferably designed as a roll diaphragm consisting of an elastomer, has a clearly defined deformation when it is acted upon by a pressure medium. The fact that the rolling diaphragm is releasably introduced into the frame, it is easily replaceable if necessary. A material connection between the frame and the rolling membrane, z. B. by vulcanization or gluing, is not required. In particular, thus eliminating the production of an elastomer-metal compound, which can sometimes be expensive and problematic. The rolling diaphragm can be produced as a single component without connection to another component, which has a favorable effect on their production costs. The rolling diaphragm exercises over the z. B. arranged in a window of the frame spacer a uniform surface pressure on the holder. Only the intermediate piece - and not the rolling diaphragm - has an interface with the holder, so that in a rotational adjustment of the holder no friction between the rolling diaphragm and the holder can occur. Thus, a lubrication or lubrication of the rolling diaphragm is not required, which contributes to the low maintenance of the roller lock. The trained by the rolling diaphragm chamber sealed by the attached sealing lip with increasing exposure to the pressure medium increasingly against the hollow body comprising the frame. Also, no additional, separate seal for the supply of the pressure medium in the chamber of the rolling diaphragm is required when the frame with the introduced rolling diaphragm frontally z. B. is flanged to a machine frame, because the introduced into the rolling diaphragm through hole can be easily formed with a slightly rising above the front side of the frame seal. The roller lock allows a manual assembly, because all cooperating components are in particular detachably connected to each other by plugging. The preferred embodiment makes it unnecessary to reinforce the effective surface of the rolling diaphragm, z. B. by an incorporated tissue. Of particular advantage is that effective between the rolling diaphragm and the intermediate piece for applying force in all Operating cases remains constant, even if the intermediate piece performs a tilting movement.

Furthermore, the advantages obtainable with the invention are that between the inner part, d. H. the holder, and the outer part, d. H. the frame, the roller lock seal provided between the inner part and the outer part gap during any radial deflection of the inner part against penetrating into the roller lock foreign body such. As dust or moisture, seals, without hindering the radial adjustment of the holder or counteract the adjustment with a force. Despite the freedom from reaction, the roller lock, which is operated in particular in the harsh environment of a printing unit, hermetically sealed by the seal, so that this seal contributes to a safe and trouble-free operation of the roller lock and to be performed on him maintenance, the stoppage of the entire printing press and thus reduce production costs.

An embodiment of the invention is illustrated in the drawings and will be described in more detail below.

Fig. 1

eine perspektivische Darstellung eines Walzenschlosses im montierten Zustand;

Fig. 2

eine perspektivische Darstellung von Teilen des Walzenschlosses gemäss der Fig. 1;

Fig. 3

einen Querschnitt des Walzenschlosses gemäss der Fig. 1;

Fig. 4

einen Längsschnitt in Axialrichtung des Walzenschlosses gemäss der Fig. 1;

Fig. 5

eine Einzelteilvergrößerung aus der Fig. 4;

Fig. 6

eine Explosionszeichnung zur Darstellung der Montage von Teilen des Walzenschlosses gemäss der Fig. 1;

Fig. 7

eine Draufsicht der Rollmembran;

Fig. 8

einen Querschnitt der Rollmembran;

Fig. 9

einen Längsschnitt der Rollmembran;

Fig. 10

eine perspektivische Ansicht der Rollmembran von oben;

Fig. 11

eine perspektivische Ansicht der Rollmembran von unten;

Fig. 12

eine Draufsicht auf die Unterseite des Zwischenstücks;

Fig. 13

einen Querschnitt durch das Zwischenstück;

Fig. 14

eine perspektivische Ansicht des Zwischenstücks von oben;

Fig. 15

eine perspektivische Ansicht des Zwischenstücks von unten;

Fig. 16

eine perspektivische Ansicht des Rahmens des Walzenschlosses;

Fig. 17

einen Längsschnitt des in der Fig. 16 gezeigten Rahmens;

Fig. 18

eine Detailansicht des in der Fig. 16 gezeigten Rahmens;

Fig. 19

einen Längsschnitt des Walzenschlosses im montierten Zustand.

Show it:

Fig. 1

a perspective view of a roller lock in the assembled state;

Fig. 2

a perspective view of parts of the roller lock according to the Fig. 1 ;

Fig. 3

a cross section of the roller lock according to the Fig. 1 ;

Fig. 4

a longitudinal section in the axial direction of the roller lock according to the Fig. 1 ;

Fig. 5

an item enlargement from the Fig. 4 ;

Fig. 6

an exploded view illustrating the assembly of parts of the roller lock according to the Fig. 1 ;

Fig. 7

a plan view of the rolling diaphragm;

Fig. 8

a cross section of the rolling diaphragm;

Fig. 9

a longitudinal section of the rolling diaphragm;

Fig. 10

a perspective view of the rolling diaphragm from above;

Fig. 11

a perspective view of the rolling diaphragm from below;

Fig. 12

a plan view of the underside of the intermediate piece;

Fig. 13

a cross section through the intermediate piece;

Fig. 14

a perspective view of the intermediate piece from above;

Fig. 15

a perspective view of the intermediate piece from below;

Fig. 16

a perspective view of the frame of the roller lock;

Fig. 17

a longitudinal section of the in the Fig. 16 shown frame;

Fig. 18

a detailed view of the in the Fig. 16 shown frame;

Fig. 19

a longitudinal section of the roller lock in the assembled state.

The Fig. 1 shows an example of an embodiment of a roller lock, it being apparent from the perspective view that the roller lock has an inner part 01 and an outer part 02. The outer part 02 is preferably formed as a frame 02. The inner part 01 is preferably formed as a connected to a roller (not shown) of a printing press holder 01, wherein the holder 01 on its side facing the roller end face z. B. a shell 03 is formed in the z. B. a arranged on an end face of the roller pin (not shown) can be inserted and held. The roller is z. B. arranged in an inking unit or a dampening unit of the printing press. The journal of the roller is preferably designed rotationally fixed, so that the pin does not perform the rotation of the roller. Rather, the roller z. B. mounted with pivot bearings on the pin. In the roller lock, the frame 02 comprises at least in its axial direction the holder 01, ie frame 02 and holder 01 are arranged coaxially. The frame 02 is preferably arranged stationary in the printing press by the frame 02 z. B. is attached to a machine frame of the printing press.

The holder 01 has in the frame 02 a position-stable, in particular rotationally fixed operating state, which can be solved to enable the holder 01 in a ua also rotatable operating state. The rotationally fixed operating state of the holder 01 causes z. B. a preferably arranged in the roller lock fixing device 29 ( Fig. 19 ), which by an actuating means 31 z. B. pneumatically or electrically actuated, in particular z. B. from one of the printing press associated control center is remote-controlled. The fixing device 29 is z. B. formed as a multi-plate clutch, wherein attached to the holder 01 first coupling elements 32 and attached to the frame 02 and thus non-rotatable second coupling elements 33 frictionally or positively mesh. In its variable-position operating state, which is usually provided in each case only for a short time, the holder 01 is radially and / or in its angular position relative to the frame 02 changeable or alignable. A continuous rotation of the holder 01 in the frame 02 is not provided as a proper operating state of the holder 01. After loosening the fixing device 29, the holder 01 in the frame 02 z. B. also slightly axially movable, to the extent that it is necessary to cancel the existing between the first coupling elements 32 and the second coupling elements 33 frictional or positive engagement. After a realignment of the holder 01 with respect to its angular position in the frame 02 and / or a change in its radial position relative to the frame 02, the fixing device 29 is closed again, so that the holder 01 in its new angular position in the frame 02 and / or in its new radial position is fixed relative to the frame 02.

The frame 02 is preferably of a z. B. tubular hollow body 04 surrounded. The frame 02 points on a side facing away from the roller end face z. B. a cover 06. In frame 02 are z. B. introduced one or more through holes 08 through which fasteners 07, z. B. a screw 07, are pluggable for mounting the roller lock and / or attachment of the roller lock on the machine frame of the printing press. Both the frame 02 and the surrounding hollow body 04 are preferably formed in one piece and / or cylindrical.

Fig. 2 shows a perspective view of the hollow body 04 and the frame 02 of the roller lock according to the Fig. 1 , wherein an elastic body 09 designed as a membrane 09, in particular as a rolling diaphragm 09, is in each case operatively connected to a stamp-shaped, solidly formed intermediate piece 11 in a window 12 (FIG. Fig. 4 ) is introduced. If the frame 02 according to the invention comprises a plurality of windows 12, the windows 12 are preferably placed equidistant along the circumference of the frame 02. The Fig. 3 leaves in a presentation recognize a cross-section of the roller lock that each rolling diaphragm 09 associated spacer 11 radially between the frame 02 and the (in the FIGS. 2 and 3 for clarity, not shown) holder 01 is arranged. The intermediate piece 11 is preferably bordered by the rolling diaphragm 09. In this case, during its deflection, the rolling diaphragm 09 can exert a radial force by means of an active surface 13 of the intermediate piece 11, ie indirectly on the holder 01, so that the force exerted on the holder 01 by the rolling diaphragm 09 steplessly adjusts the roller connected to the holder 01 in its stroke set, wherein the stroke of the roller z. B. may be up to 10 mm. The stroke of the roller is preferably directed transversely to its axial direction, ie, the stroke is preferably carried out in a direction substantially perpendicular to the axial direction of the roller plane. The intermediate piece 11 is z. B. in the window 12 of the frame 02 laterally guided. The intermediate piece 11 is in the window 12 of the frame 02 in a cross-sectional plane of the frame 02 z. B. edged. The intermediate piece 11 is preferably designed to be slidable on an interface 13 to the holder 01, wherein the interface 13 forms an effective surface 13 for the holder 01. The rolling diaphragm 09 thus exerts a force through the window 12 on the holder 01, wherein the rolling diaphragm 09 which presses from a non-elastic and thus non-compressible material existing intermediate piece 11 against the holder 01.

The rolling diaphragm 09 is arranged in the frame 02 and preferably releasably connected to the frame 02, so that the rolling diaphragm 09 is replaceable in a simple manner, because it can be removed without damage from the frame 02. In particular, the rolling diaphragm 09 is only mechanically knotted into the window 12 of the frame 02 and not materially inserted. The rolling diaphragm 09 closes the window 12 preferably over the entire surface. The rolling diaphragm 09 has at its edge a rolling diaphragm 09 against the frame 02 sealing gasket 14, which is preferably formed as a bead 14 with which the rolling diaphragm 09 in the window 12 of the frame 02 positively engages in a formed on the frame 02 bead, whereby the rolling diaphragm 09 is fixed in the frame 02. In this case, the bead 14 is preferably formed circumferentially on the rolling diaphragm 09.

The introduced in the window 12 of the frame 02 rolling diaphragm 09 forms a hollow body 04 open chamber 16. The rolling diaphragm 09 advantageously has a hollow lip 04 facing the sealing lip 17 ( Fig. 5 ), wherein the sealing lip 17, the chamber 16 seals against the applied to the frame 02 hollow body 04. The chamber 16 is acted upon by a pressure medium, preferably with compressed air of z. B. up to 6 · 10 ⁵ Pa (6 bar). An increasing as a result of the application of the pressure medium internal pressure in the chamber 16 presses the sealing lip 17 reinforced against the hollow body 04. The formed by the rolling diaphragm 09 and sealed by the hollow body 04 chamber 16 forms when exposed to a pressure medium together with the intermediate piece 11 on Actuator acting on the holder 01, wherein the acted upon by the pressure medium chamber 16 for the movable along a travel intermediate piece 11 forms an actuating means, wherein the intermediate piece 11 transmits the force exerted by the chamber 16 force on the holder 01.

The rolling diaphragm 09 is preferably made of an elastomer material, for. PUR or NBR. The frame 02 consists of a dimensionally stable material, for. B. of a metallic material, of a plastic or of a composite material. The hollow body 04 is also made of a dimensionally stable material, for. B. of a metallic material, in particular aluminum. The hollow body 04 is advantageously formed as a tube. The intermediate piece 11 is z. B. of a plastic and z. B. produced by injection molding.

The rolling diaphragm 09 has in the axial direction of the frame 02 for supplying the pressure medium into the chamber 16 preferably at least one through hole 18, for. B. a through hole 18, wherein the through hole 18 in the axial direction of the Frame 02 on the side facing away from the chamber 16 side z. B. annular seal 19 has ( Fig. 4 ), which there at the rolling diaphragm 09 z. B. is formed.

How the particular Fig. 5 in an item enlargement from the Fig. 4 can recognize, the rolling diaphragm 09 between the frame 02 and the intermediate piece 11 on a U-shaped rolling area A. This rolling area A of the rolling diaphragm 09 is preferably formed around the chamber 16 circumferentially and comparatively narrow to the size of the window 12, the z. B. over a length a ( Fig. 7 ) extends in the circumferential direction of the frame 02, wherein the length a z. B. may be 50 mm to 100 mm.

Details of the rolling diaphragm 09 are the Fig. 7 to 11 removable. The sealing lip 17 may, for. B. have a protruding by the length c on the edge of the supernatant and a directed from the edge of the rolling diaphragm 09 in the interior of the rolling diaphragm 09 length b. The length c can be 1 mm to 2 mm, the length b z. B. 2 mm to 6 mm. The rolling diaphragm 09 has at its acting on the intermediate piece 11 surface a thickness d of z. B. 1 mm to 2 mm.

Details of the adapter 11 are the Fig. 12 to 15 removable. Thus, the intermediate piece 11 z. B. diagonally extending ribs 21 which between z. B. form substantially rhombus-like cavities 22, wherein the cavities 22 are opened to the active surface 13 with the holder 01. The intermediate piece 11 is preferably concave on its side facing the holder 01 (underside) and preferably convex on its side facing the rolling diaphragm 09 (upper side). The intermediate piece 11 may have in its plan view a substantially rectangular or oval outline with the edge lengths e and f, wherein the intermediate piece 11 is plugged with its outline on the rolling diaphragm 09 such that the rolling diaphragm 09 with one side of its rolling range A at a peripheral edge 23 of the intermediate piece 11 is present.

The Fig. 16 shows in a perspective view of the frame 02 of the roller lock without the holder 01, wherein in the window 12 of the frame 02 each have an intermediate piece 11 is inserted. The FIGS. 17 and 18 show a longitudinal section of the in the Fig. 16 shown frame 02 and a detailed view of the in the Fig. 16 shown frame 02. Preferably on an end face of the frame 02 is a z. B. annular seal 24 is attached, which preferably consists of an elastic material and z. B. is formed as a attached to a rigid ring 27 elastic sealing lip 28 ( Fig. 18 ). The ring 27 may, for. B. be made of a metallic material to which the sealing lip 28 z. B. vulcanized or glued. Once the roller lock is fully assembled by the holder 01 is inserted into the frame 02, the sealing lip 28 is in a preferably biased state on the lateral surface of the holder 01 and seals in this way an existing between the holder 01 and the frame 02, preferably annular trained space 26 against penetrating into the roller lock foreign body such. As particular dust or moisture from.

The assembled state of the roller lock is in a longitudinal section in the Fig. 19 shown. The gap 26 between the holder 01 and the frame 02 may in the operating state in which the holder 01 relative to the frame 02 is not radially deflected, but the holder 01 and the frame 02 have concentric cross-sectional areas, for. B. a gap width w ( Fig. 19 ) between 1 mm and 6 mm, preferably between 2 mm and 4 mm, in particular about 3 mm. Although the sealing lip 28 biased rests on the holder 01, it still exerts no restoring moment on the holder 01, if it is deflected radially after loosening the fixing device 29. The seal 24 or at least its sealing lip 28 is therefore preferably made thin and soft-elastic, so that the seal 24 follows the movement of the holder 01, without disturbing this movement to oppose a force. The seal 24 thus fits in its the gap 26 between the holder 01 and the frame 02 sealing Extension of the due to the radial deflection of the holder 01 changing gap width w of the gap 26 due to their suppleness and ductility and due to their directed in the radial direction length, in particular excess length of. At a z. B. annular formation of the seal 24, its radial ring width is preferably designed to be larger than concentric alignment of holder 01 and frame 02, the gap width w of the gap 26 requires. The ring width can z. B. be twice the amount of gap width w of the gap 26 or even more. The seal 24 may wrinkle in its radial extent, at least partially, in particular in the operating state, when the holder 01 is radially deflected relative to the frame 02.

In the in the Fig. 16 to 19 As shown, the seal 24 is preferably fixedly connected to the frame 02, wherein the sealing lip 28 of the seal 24 biased against the holder 01 rests positively. Alternatively, however, the seal 24 with the holder 01 preferably be firmly connected, wherein the sealing lip 28 of the seal 24 biased against the frame 02 rests positively. In both cases, it must be ensured that the seal 24 seals during any deflection of the holder 01 in the frame 02 between the holder 01 and the frame 02 existing gap 26, so arranged in the interior of the roller lock components such. B. the elastic membrane 09, the spacers 11 and other, against the danger from outside into the roller lock penetrating foreign body such. As dust and moisture, are reliably and permanently protected. For this purpose, the seal 24, but at least the sealing lip 28, during a deflection of the holder 01 may be radially displaceable.

As in particular the FIGS. 17 and 18 can be removed, the sealing lip 28, at least in the unmounted state of the frame 02 and holder 01 preferably an inclination angle α relative to the front side of the holder 02, said inclination angle α is preferably inclined from the roller lock repellent and z. B. between 15 ° and 45 °, in particular about 25 °. As a result, the sealing lip 28 opposite the end face of the holder 02 forms a supernatant g, wherein the supernatant g z. B. between 1 mm and 5 mm. The sealing lip 28 protrudes from its attachment z. B. on the frame 02 preferably radially directed into the interior of the frame 02 with a preferably circumferential width h, in particular ring width h in the frame 02 into it, wherein the width h is greater than the maximum radial deflection of the holder 01 in the frame 02 and preferably between 3 mm and 10 mm.

For the hiring of the roller 01 mounted by the roller lock roller against another roller or for stopping the bearing of the holder 01 of the roller lock roller of another roller, the radial displacement of the holder 01 in frame 02, the gap width w between the holder 01 and To fully exploit frame 02, whereas a relatively small travel of the holder 01 in the frame 02 is sufficient for adjusting the force applied between the adjacent rollers or the contact pressure, provided that the already adjusted in its contact force or in its contact pressure roller against the adjacent roller. So z. B. for forming a roller strip with a directed in the circumferential direction of the roller width of 8 mm between the two adjacent rollers, a travel of 0.2 mm for the radially adjustable roller be sufficient. The arranged between the holder 01 and the frame 02 seal 24 is such and designed that it participates due to its elasticity required for hiring or stopping the roller large radial travel, without deflected to the located in the center of the frame 02 rest position Holder 01 to exert a restoring force, wherein the deflection of the holder 01 is preferably carried out by means of each actuated by a diaphragm 09 spacers 11.

LIST OF REFERENCE NUMBERS

01

Inner part, holder

02

Outer part, frame

03

Bowl

04

hollow body

05

-

06

cover

07

Fastener, screw

08

Through Hole

09

elastic body, membrane, rolling membrane

10

-

11

connecting piece

12

window

13

effective area

14

Seal, bead

15

-

16

chamber

17

sealing lip

18

Through hole, through hole

19

poetry

20

-

21

ribs

22

cavity

23

circumferential edge

24

poetry

25

-

26

gap

27

ring

28

sealing lip

29

fixing

30

-

31

actuating means

32

Coupling elements, first

33

Coupling elements, second

A

roll area

a

length

b

length

c

length

d

thickness

e

length

f

length

G

Got over

H

Width, ring width

w

gap width

α

tilt angle

Claims (14)

1. Roller closing device comprising an inner part (01) and an outer part (02), the inner part (01) and the outer part (02) being arranged at least partly coaxially and at least one adjusting means being arranged between the inner part (01) and the outer part (02), the adjusting means on the inner part exerting a force directed radially between the inner part (01) and the outer part (02), characterised in that the adjusting means having an intermediate piece (11) consisting of a non-compressible material transfers its force to the inner part (01), a plurality of such intermediate pieces (11) movable along an adjustment path being arranged at a distance from one another along the circumference of the outer part (02).
2. Roller closing device according to Claim 1, characterised in that the outer part (02) is in the form of a frame (02).
3. Roller closing device according to one of Claims 1 or 2, characterised in that the inner part (01) is in the form of a holder (01) connected to a roller of a printing press.
4. Roller closing device according to Claim 1, characterised in that the adjusting means is in the form of an elastic body (09).
5. Roller closing device according to Claim 4, characterised in that the frame (02) has a plurality of windows (12), by means of which the elastic body (09) exerts the force on the holder (01).
6. Roller closing device according to Claim 5, characterised in that one of the intermediate pieces (11) is in each case arranged in the windows (12) of the frame (02) between the elastic body (09) and the holder (01).
7. Roller closing device according to Claim 6, characterised in that the respective intermediate piece (11) is guided laterally in the respective window (12) of the frame (02).
8. Roller closing device according to Claim 6, characterised in that the respective intermediate piece (11) is designed to be slideable at an interface (13) to the holder (01).
9. Roller closing device according to Claim 1, characterised in that the respective intermediate piece (11) consists of a plastic.
10. Roller closing device according to Claim 1, characterised in that the respective intermediate piece (11) has ribs (21) which form cavities (22) between them.
11. Roller closing device according to Claim 10, characterised in that ribs (21) of the respective intermediate piece (11) run diagonally, the cavities (22) formed between them being rhombus-like.
12. Roller closing device according to Claim 10, characterised in that the cavities (22) are open to an active surface (13) with the holder (01).
13. Roller closing device according to Claim 1, characterised in that the respective intermediate piece (11) is concave on its side directed to the inner part (01).
14. Roller closing device according to Claim 1, characterised in that the respective intermediate piece (11) is designed to be convex on its side facing away from the adjusting means.

Images