DE10005875B4 - Ink feed arrangement - Google Patents

Abstract

The inking device enables the ink (10) to be changed easily by coupling at least one of the ink reservoirs (04, 06) via two lines (26, 41), opening and closing alternately, to the ink feed bar (02) by means of quick couplers (18, 22, 36, 37). The ink is fed pneumatically. There are no moving parts in the device.

Description

The invention relates to an ink supply device according to claim 1.

Through the CH 392 565 A pump inking unit for a multi-color rotary printing machine has become known, each with a ¼-roller-wide inking device with optionally operable ink supply pipes and a large number of rotary lobe pumps.

The DE 197 21 235 A1 , the DE-OS 22 64 393 and the DE 31 09 303 C2 disclose ink supply devices in which outlet openings can be connected to two ink reservoirs. These ink reservoirs can be pressurized with a pressure medium.

The invention has for its object a To create ink supply device in the printing ink quickly replaced can be.

The object is achieved by the Features of claim 1 solved.

The achievable with the invention Advantages are in particular that the printing ink is fast and can be replaced without much cleaning effort. When feeding the Printing ink for the inking unit are not mechanically movable parts of a Drive required. The invention is advantageously at smaller print jobs with frequently can be used for changing printing ink. The number of with ink in touch coming components is low ..

Embodiments of the invention are shown in the drawing and are described in more detail below.

The only drawing shows the schematic Representation of a cross section through a "pump inking unit" with two transportable Color reservoirs different designs.

An inking unit of a rotary printing press consists among other things of an arrangement of several rollers, one of which is an inking roller 01 is partially shown. To the inking roller 01 is a side frame fixed, and a slidably mounted ink feed bar 02 adjustable so far that there is still an annular gap 03 between the ink feed bar 02 and the outer surface of the inking roller 01 for transferring printing ink remains. The ink application roller expediently extends in the axis-parallel direction 01 four quarter web width, separately adjustable ink feed bar 02 , each of which is assigned at least one ink reservoir, but expediently, as shown in the drawing, two ink reservoirs, 04 or 06.

Each ink reservoir 04 ; 06 is on rails 07 ; 08 in the radial direction A to the inking roller 01 slidably arranged, the rails 07 ; 08 on trusses between the journeyman 09 ; 11 are attached.

Each of the ink reservoirs 04 ; 06 can be used as an alternative to the ink supply for the inking roller 01 are used, in particular when the ink supply of a printing ink has to be renewed "on the fly" or another printing ink is subsequently provided.

According to a first embodiment, the ink reservoir has 04 one with ink 10 fillable and with an outlet opening 12 provided color storage space 13 on which, by one in a plane 15 reciprocating paint slider 14 separately, to a pressure chamber 16 borders. Both rooms 13 ; 16 have the same cross-section, on the contours of which the color slide 14 absorbent. At the end of the pressure room 16 is a supply line 17 for pressure medium, e.g. B. compressed air is provided, which to a color bar near quick coupling 18 leads, the first part 19 with the ink reservoir 04 and its second part 21 with the ink feed bar 02 connected is.

The outlet opening 12 also opens into a quick coupling close to the color bar 22 which is also like the quick connector 18 is constructed. That in the ink feed bar 02 located second part 21 the quick coupling 18 is over a line 23 with a directional valve 20 connected, which in turn with a central pressure supply 24 , e.g. B. for compressed air. The second part of the quick coupling 22 is via a check valve 25 as well as via an upper supply line 26 for a distribution line 27 running in the axis-parallel direction for cross-conveying the printing ink 10 connected. The distribution line 27 leads to a number of three to ten, preferably five outlet lines 28 each ¼-wide ink feed bar 02 , The outlet lines 28 each end in one to the annular gap 03 directed outlet opening 29 ,

The ink feed bar 02 has an alternative connection for the second ink reservoir 06 on. There are second, color bar-proof parts 34 a lower quick coupling 37 via a lower, first connection line 38 via the directional valve 20 with the central pressure supply 24 connected. Second ink box-fixed parts 34 an upper quick coupling 36 are via a supply line 41 with the in the axially parallel direction of the inking roller 01 extending distribution line 27 for cross-conveying the printing ink 10 connected. This distribution line 27 in turn leads to five lower outlet lines 28 of the ¼-web-wide ink feed bar 02 ,

According to a second exemplary embodiment, the lower ink reservoir has 06 one in a pressure room 44 located and with printing ink 10 fillable paint sack 46 on. The paint sack 46 is by means of pressure medium 24 , e.g. B. compressed air arranged compressible and has a color bar near the first end of the ink reservoir 06 directed outlet opening 47 for the printing ink 10 on. The outlet opening 47 is with a first part 48 the lower quick coupling 36 connected.

Near the second face of the ink reservoir 06 , so opposite the outlet opening 47 is a connection line that is fixed to the reservoir 49 provided the pressure room 44 with a first part 48 the lower quick coupling 37 for introducing compressed air.

The function of the first ink reservoir 04 is as follows: The z. B. through the outlet opening 12 upper ink reservoir filled with printing ink 04 is by means of the handle 51 on the profile rails 07 moved in radial direction A until the quick couplings 18 ; 22 are connected. By supplying compressed air to the pressure chamber 16 becomes the color slider 14 towards the ink feed bar 02 pressed so that the printing ink 10 through the outlet opening 12 as well as over the lines 26 to 28 and the corresponding outlet opening 29 in the annular gap 03 exit.

A level indicator for printing ink can e.g. B. be created in that a slide part 52 consists of electrically conductive material and when emptying the ink supply space 13 with first or second proximity switches 53 ; 54 comes into contact, which triggers a corresponding signal.

The second color reservoir 06 can be put into operation by the pressure room 44 via the connecting line 49 is pressurized with compressed air. The compressed air supply to the upper ink reservoir 04 is then by switching the directional valve 20 interrupted.

It is only one of the ink reservoirs at a time 04 or 06 in operation.

The ink reservoirs 04 or 06 can each with color slider 14 or with a paint sack 46 be trained and operated with compressed air.

It is also possible to use the pressure medium 24 not only gaseous, but also liquid, ie using water or oil.

The pressure medium always acts indirectly on the printing ink 10 , ie with the interposition of the slide 14 or the color bag 46 ,

The ink 10 becomes an outlet opening without the interposition of a pump 29 promoted.

01

Inking roller

02

Farbzuführbalken

03

annular gap (01, 02)

04

Ink reservoir, upper

05

06

Ink reservoir, lower

07

rail (04)

08

rail (06)

09

traverse (07)

10

printing ink

11

traverse (08)

12

Outlet (13)

13

Color pantry (04)

14

ink slide (13; 14)

15

level (14)

16

pressure chamber (04)

17

supply

18

Quick coupling, lower, for lever

19

Part, first (18; 22)

20

way valve

21

Part, second (18; 22)

22

Quick coupling, upper, for colour

23

Management, upper (compressed air)

24

Pressure supply, central

25

check valve

26

supply, upper (ink)

27

distribution line (Ink)

28

exit line (Ink)

29

Outlet (28)

30

31

32

33

34

Part, second (36; 37)

35

36

Quick coupling, upper

37

Quick coupling, lower

38

Lead, lower (compressed air)

39

40

41

supply, lower (ink)

42

43

44

pressure chamber

45

46

Color bag (06)

47

Outlet (46)

48

Part, first (36; 37)

49

connecting line (44; 48)

50

51

handle (04.06)

52

slide part (14)

53

Proximity switch, first (13)

54

Proximity switch, second (13)

A

radial direction

Claims (10)

Ink supply device with a first ink reservoir ( 04 ) via a first supply line ( 26 ) with several outlet openings ( 29 ) for feeding ink onto an inking roller ( 01 ) is connected and at least one second ink reservoir ( 06 ), alternatively via a second supply line ( 41 ) with the outlet openings ( 29 ) is connectable, each ink reservoir ( 04 ; 06 ) with a pressure medium ( 24 ) is acted upon, and by means of pressurized ink via a check valve ( 25 ) the first supply line ( 26 ) and the second supply line ( 41 ) can be alternately opened and closed. Ink supply device according to claim 1, characterized in that the printing ink ( 10 ) indirectly by means of the pressure medium ( 24 ) from a color supply room ( 13 ; 46 ) of the ink reservoir ( 06 ) can be carried out. Ink supply device according to claim 1, characterized in that a with printing ink ( 10 ) Fillable color storage space ( 13 ) of the ink reservoir ( 06 ) by means of a in one level ( 15 ) reciprocating slide ( 14 ) volume can be changed. Ink supply device according to claim 3, characterized in that the slide ( 14 ) directly using the pressure medium ( 24 ) is movable. Ink supply device according to claim 1, characterized in that an ink supply space of the ink supply container ( 06 ) as a paint sack ( 46 ) is formed, from which the action of the pressure medium ( 24 ) Printing ink ( 10 ) is squeezable. Ink supply device according to claims 2 and 3, characterized in that the pressure medium ( 24 ) via the slider ( 14 ) indirectly on the printing ink ( 10 ) works. Ink supply device according to claims 1 and 5, characterized in that the pressure medium ( 24 ) over the color sack ( 46 ) indirectly on the printing ink ( 10 ) works. Ink supply device according to claim 1, characterized in that the pressure medium ( 24 ) consists of compressed air. Ink supply device according to claim 1, characterized in that the ink reservoir ( 04 ; 06 ) interchangeable on an ink supply bar ( 02 ) is arranged. Ink supply device according to claims 1 and 9, characterized in that the ink reservoir ( 04 ; 06 ) by means of quick couplings ( 18 ; 22 ; 36 ; 37 ) on the ink feed bar ( 02 ) can be connected.