DE102004055749A1 - Rotary printing machine has a print cylinder cleaning system with cleaning fluid fed from reservoir - Google Patents

Abstract

The machine has a series of roller printing stages [1] with a coating stage [2] that has a dispenser [10]. Printing sheets are fed through the machine by feed rollers. Each printing stage has an associated cleaning unit [7] that have brushes and washing unit. Cleaning fluid is fed through feed lines from pneumatically powered supply reservoirs.

Description

The The invention relates to a supply device for a cleaning device in a processing machine, preferably in a rotary printing machine, including the combination of printing and coating plants, or in a painting machine, according to the generic term of the independent Claims.

[State of the art]

Out DE 203 07 718 U1 For example, a cleaning device of this type is known, which for wetting a cleaning element has a plurality of separate supply lines for various cleaning liquids, including water. The supply lines are connected to a switchable valve block which is coupled to the machine control and to which the cleaning liquids can be optionally supplied from a plurality of separate storage containers for the cleaning liquids and for water via separate pumps.

Out EP 0 441 019 A1 is known as a cleaning device a spray blanket washing system for mixing solvent and water. For this purpose, the system has a controllable solvent supply device, a controllable water supply device, a controllable air supply device and a spray bar device for the purpose of receiving and distributing solvent and water. The spray bar device has a single mixing tube directly connected to a spray bar and a plurality of nozzles for spraying the mixture of solvent and water by compressed air exclusively onto the blanket (cleaning element).

OBJECT OF THE INVENTION

Of the Invention is based on the object, a supply device to create the type described above, the feeding of Cleaning fluids, including of water, at least one cleaning device process stable allowed and the effort when using different cleaning fluids noticeable reduced.

Is solved the object by the training features of the independent claims 1 and 2. Further developments emerge from the dependent claims.

One the first advantage is that that the supply device in a processing machine, for example, with several printing and coating units, for at least one, preferably for a plurality of cleaning devices is formed. Is an advantage Furthermore, that each cleaning device at least one supply line for one cleaning fluid having. In a further embodiment, each cleaning device several separate supply lines for different Cleaning fluids, including Water, up.

The Supply device is universal for cleaning devices in Printing units as ink roller cleaning device, as a form / blanket cylinder cleaning device or used as a printing cylinder cleaning device. Likewise is the supply device for a cleaning device in a coating unit for cleaning a Form cylinder with at least one associated applicator roll or a metering system, for example a chamber doctor blade system with anilox roller, used.

One second advantage is that through the house water connection prefers constantly Fresh water as cleaning fluid is supplied to the cleaning device. When using Water - as one of the cleaning fluids - will be a possible contamination of the water, for example by standing or warming the Water, avoided. As a result, the process-stable supply by means of Water as cleaning fluid improved and replacing reservoirs for water is obsolete.

From Another advantage is that set-up times be reduced by filling a container, specifically the filling with water as cleaning fluid, deleted and reduces the otherwise necessary space requirements for such containers is. At the same time the danger of a swapping of storage containers is noticeably reduced.

Prefers the supply device is advantageously circuitry with the machine control related. Thus, if necessary, each cleaning device (ink roller cleaning, Blanket / blanket cylinder cleaning, impression cylinder cleaning or dosing system cleaning) individually controllable in each printing or coating unit. At the same time every single supply line for the first or second cleaning fluid or for Water separately controllable.

In an advantageous embodiment, the supply device has a central mixing chamber for preferably a plurality of different cleaning liquids, including water. In this mixing chamber is a dosage of one or more cleaning liquids with water or more cleaning liquids with each other and, if necessary, in addition with water for the purpose of their mixture and subsequent supply to at least one controlled by a valve block Reinigungsvor feasible direction. Alternatively, a single cleaning liquid, if necessary combined with water, can be supplied via the mixing chamber to at least one cleaning device controlled by means of a valve block.

at Need it is advantageous a color or paint change in the processing machine, for example, when changing from offset ink to UV ink, in the complete processing machine or as needed in individual Printing / coating units perform. For a paint / varnish change in the entire processing machine or in individual printing / coating plants becomes the respective cleaning fluid corresponding to the type of ink used, for example a UV cleaning liquid in the case of UV ink, used for cleaning.

These Operation is not on the whole processing machine or limited individual printing / coating units. Are several cleaning devices arranged in a printing / coating unit, so may in each of the cleaning devices a different Cleaning fluid used become. For example, in so-called mixed operation in one Druck- / Lackwerk the cleaning devices for the printing cylinder and the Blanket / form cylinder with a first cleaning fluid and the cleaning device for the Inking unit / dosing system with a second cleaning fluid cleaned.

through the machine control and at least one valve block is a Conversion of each cleaning device from a first cleaning liquid to a second cleaning fluid and vice versa feasible.

[Examples]

The Invention is intended to an embodiment be explained in more detail. Here are shown schematically:

1 a sheet-fed rotary printing press with printing units and a coating unit,

2 a first embodiment of a supply device for a printing unit,

3 a detail of 3 .

4 a second embodiment of a supply device for a printing unit.

A processing machine is embodied as a sheet-fed rotary printing machine, which has a plurality of printing units 1 having. In conveying direction 3 the substrate is the last printing unit 1 in addition a coating unit 2 (Coating unit) downstream. Alternatively, a processing machine is also exclusively made of coating units 2 with dosing systems 10 , For example, doctor blade and anilox roller, and forme cylinder 9 executable.

Every printing unit 1 has a plate cylinder with an inking unit, possibly with a dampening unit, a blanket cylinder 8th as well as a printing cylinder 6 as a sheet guiding cylinder. The impression cylinder 6 follows in the conveying direction 3 the sheet-shaped printing material at least one transfer cylinder. The printing machine also has a feeder 4 with feed table and one the coating unit 2 downstream boom 5 on. The coating plant 2 also has a sheet-guiding printing cylinder 6 as well as with the dosing system 10 coupled form cylinder 9 on.

Every printing and coating unit 1 . 2 has at least one cleaning device 7 ( 7.1 to 7.3 ) on. As cleaning devices 7 are housed in a housing cloth or brush washing devices, but also doctor washing devices with sump (and return), for example according to DE 200 02 333 U1 , As well as trained with a return metering systems, such as chamber doctor blade, can be used.

In the present example, the cleaning device comprises 7 preferably in every printing unit 1 an inking roller cleaning device 7.3 , which is designed as a spraying device and doctor device with drip pan and return. Furthermore, a blanket cylinder cleaning device 7.2 which is formed as a brush cleaning device (with return line) accommodated in a housing, and finally a printing cylinder cleaning device 7.1 which is formed as a brush cleaning device accommodated in a housing (with return line).

In the coating plant 2 includes the cleaning device 7 a forme cylinder cleaning device 7.2 , which is designed as a housed in a housing brush washing device (with return line) and a dosing system cleaning device 7.3 , which is designed for example as a chamber doctor blade system with anilox roller and a supply and return. Furthermore, a printing cylinder washing device 7.1 , which is also designed as a housed in a housing brush washer (with return line) is provided.

1st example

Each of the cleaning devices 7 ( 7.1 to 7.3 ) has respective first, second and third supply lines 11 to 13 for each a cleaning fluid. The supply lines 11 to 13 lead in flow direction 24 the cleaning liquids in the respective housings (cleaning devices 7.1 . 7.2 ) or are directed into the ink roller train or with the dosing system 10 coupled (cleaning device 7.3 ). If necessary, the respective cleaning device 7 ( 7.1 to 7.3 ) coupled with a leading to a container return line with or without a pump.

Every cleaning device 7 respectively. 7.1 to 7.3 is in each case with the first and second supply line 11 . 12 for a first and second cleaning liquid and with a third supply line 13 coupled for water as a third cleaning fluid. The first supply line 11 is with a first reservoir 18 for the first cleaning fluid and the second supply line 12 is with a second reservoir 19 connected for the second cleaning liquid and the third supply line 13 is with a domestic water connection 20 (Fresh water supply) connected.

In the first supply line 11 is a first, pneumatically acted caching 16 for a first cleaning liquid and in the second supply line 12 is a second, pneumatically acted caching 17 integrated for a second cleaning liquid arranged. These are the buffers 16 . 17 individually with a compressed air source 21 coupled. The intermediate stores are preferred 16 . 17 individually with a query system 22 coupled for controllable monitoring of the operating or switching states.

The house water connection 20 is in the flow direction of the cleaning liquid into the third supply line 13 integrated, controllable supply system 25 downstream. The supply system 25 is preferred with a preferably electrical interrogation system 22 coupled to the controllable monitoring of the operating or switching states circuit technology. The supply system 25 exists in flow direction 24 the cleaning fluid from a stopcock 26 , a downstream pressure reducer 27 , which preferably has an intermediate filter (sieve filter, filter element), a downstream pressure switch 28 and a nachgeordne th switching valve 29 ,

The supply lines 11 to 13 are with one with a machine control 23 coupled, switchable valve block 14 . 15 connected. In the flow direction 24 the cleaning fluids is after the first valve block 14 or second valve block 15 the respective supply line 11 respectively. 12 respectively. 13 to every cleaning device 7 ( 7.1 to 7.3 ) arranged branching.

The mode of action is as follows: The first cleaning liquid is in the first storage tank 18 (Standard Container or Custom Container). If necessary, in the flow direction 24 the first cleaning liquid the first buffer 16 fed. For this purpose, the cache 16 pneumatic (compressed air source 21 ) acts and sucks, preferably by means of an injector, the first cleaning liquid from the reservoir 18 in the first cache 16 , From the cache 16 the first cleaning fluid is pressurized to the first valve block 14 supplied and from there, if necessary, to the respective cleaning device 7.1 . 7.2 . 7.3 distributed fed.

Analogously, the second cleaning liquid is in the second reservoir 19 and if necessary in the flow direction 24 , Preferably by means of injector, the pneumatically acted upon, second buffer 17 fed. From the second cache 17 the second cleaning fluid is pressurized to the second valve block 15 supplied and from there to the respective cleaning device 7.1 . 7.2 . 7.3 distributed fed.

From the house water connection 20 If necessary, the third cleaning liquid (water) is added to the supply system 25 fed.

The network pressure of the third cleaning fluid is reduced by means of a pressure reducer 27 and using the query system 22 set process stable, so that the third cleaning liquid the valve block 14 is supplied under pressure. From the valve block 14 If necessary, the third cleaning liquid is applied to the respective cleaning device 7.1 . 7.2 . 7.3 distributed fed.

If necessary is in the supply lines 11 . 12 near the respective cleaning device 7 ( 2 : 7.1 . 7.2 ) a check valve 30 arranged.

If the operating pressure of the domestic water connection is too low or unstable 20 is preferably a pressure accumulator 32 in the third supply line 13 integrated, can be arranged. In an education is in flow direction 24 the water of the pressure accumulator 32 in front of the supply system 25 with the third supply line 13 connected on the line side ( 2 ). In another embodiment is in the flow direction 24 the water of the pressure accumulator 32 on the supply side via the supply system 25 with the third supply line 13 connected ( 3 ). The accumulator 32 in particular serves to keep the operating pressure of the domestic connection constant 20 in the third supply line 13 fed water.

Depending on the desired water quality are in the third supply line 13 water additives 31 fed. These water additives 31 are preferably used to improve the water quality, include, for example, surfactants and are also known by the term "water smoother". Preferred are the se water additives 31 in the flow direction 24 in front of the supply system 25 in the third supply line 13 fed.

In a further embodiment, if necessary, before the supply of water additives 31 within the third supply line 13 arranged an injector, for example, from a reservoir, the water additives 31 in the third supply line 13 sucked in, mixed and the mixture of water additives 31 and water in the third supply line 13 in the flow direction 24 transported.

2nd example

Each of the cleaning devices 7 ( 7.1 to 7.3 ) according to 4 each a (first) supply line 11 for a cleaning fluid or a mixture of cleaning fluids. The feed line 11 flows in flow direction 24 the cleaning liquids in the respective housing (cleaning devices 7.1 . 7.2 ) or is directed into the ink roller train or with the metering system 10 coupled (cleaning device 7.3 ). If necessary, the respective cleaning device 7 ( 7.1 to 7.3 ) coupled with a leading to a container return line with or without a pump.

Every cleaning device 7 respectively. 7.1 to 7.3 is by means of its own supply line 11 with a (first) upstream valve block 14 , which with a machine control 23 and, if needed, a query system 22 circuitry is coupled, coupled. The machine control 23 is preferred with a control room 34 coupled. By means of a supply line 11 is still the valve block 14 with an upstream mixing chamber 33 connected on the line side.

In this mixing chamber 33 feed in the flow direction 24 a first supply line 11 , a second supply line 12 and a third supply line 13 one. The first supply line 11 is with a first reservoir 18 for the first cleaning fluid and the second supply line 12 is with a second reservoir 19 connected for the second cleaning liquid speed and the third supply line 13 is with a domestic water connection 20 (Fresh water supply) connected. In the first supply line 11 is a first, pneumatically acted caching 16 for a first cleaning liquid and in the second supply line 12 is a second, pneumatically acted caching 17 integrated for a second cleaning liquid arranged. These are the buffers 16 . 17 individually with a compressed air source 21 coupled. The compressed air source 21 is preferred over one of the machine control 23 controllable switching valve 29 with the mixing chamber 33 connected on the line side. The intermediate stores are preferred 16 . 17 individually with a query system 22 in connection with the machine control 23 coupled for controllable monitoring of the operating or switching states. In the flow direction 24 are in front of the mixing chamber 33 in the supply lines 11 to 13 switching valves 29 arranged, which with the machine control 23 circuit technology are coupled. Alternatively, the mixing chamber 33 mechanically or electrically (eg by means of electrically operated actuating cylinder (metering or piston cylinder, see 4 Double arrow) operable.

If necessary, the house water connection 20 analogous to the first example in the flow direction of the cleaning liquid into the third supply line 13 Integrated, controllable supply system (in 4 not shown). The supply system is preferred with a preferably electrical interrogation system 22 coupled to the controllable monitoring of the operating or switching states circuit technology. Preference is also the Vorratsbehälterl 8th . 19 with the electrical interrogation system 22 connected by circuitry.

The mode of action is as follows: The first cleaning liquid is in the first storage tank 18 (Standard Container or Custom Container). If necessary, in the flow direction 24 the first cleaning liquid via the supply line 11 the first cache 16 fed. For this purpose, the cache 16 pneumatic (compressed air source 21 ) acts and sucks, preferably by means of an injector, the first cleaning liquid from the reservoir 18 in the first cache 16 , From the cache 16 The first cleaning liquid is supplied by means of a supply line 11 and switching valve 29 if necessary to the mixing chamber 33 fed. If necessary, the cache can 17 omitted, for example when the mixing chamber 33 with open switching valve 29 works as a "self-sucking" cylinder.

• – ein Gemisch aus der ersten und zweiten Reinigungsflüssigkeit, oder
• – ein Gemisch aus der ersten oder zweiten und jeweils der dritten Reinigungsflüssigkeit, oder
• – ein Gemisch aus der ersten und der zweiten und der dritten Reinigungsflüssigkeit.

The second cleaning liquid is located in the second reservoir 19 (Standard Container or Custom Container). If necessary, in the flow direction 24 the second cleaning liquid via the supply line 12 the second cache 17 fed. For this purpose, the cache 17 pneumatic (compressed air source 21 ) acts and sucks, preferably by means of an injector, the second cleaning liquid from the reservoir 19 in the second cache 17 , From the cache 17 the second cleaning liquid is supplied by means of a supply line 12 and switching valve 29 if necessary to the mixing chamber 33 fed. The house connection 20 serves the fresh water supply and feeds by means of supply line 13 and switching valve 29 if necessary in the mixing chamber 33 one. Is a use of the first or second or the third cleaning liquid provided in unchanged form, this is done by means of the compressed air source 21 the first or second or third cleaning fluid from the mixing chamber 33 in the flow direction 24 the valve block 14 fed by pressure and from there, if necessary, to the respective cleaning device 7.1 . 7.2 . 7.3 distributed fed. If the use of a mixture of cleaning liquids is provided for cleaning, the selected cleaning liquids become the mixing chamber 33 supplied and preferably pneumatically (compressed air source 21 ) the valve block 14 supplied and from there, if necessary, to the respective cleaning device 7.1 . 7.2 . 7.3 distributed fed. As possible mixture formations are to be mentioned:

• A mixture of the first and second cleaning fluids, or
• A mixture of the first or second and respectively the third cleaning fluid, or
• - A mixture of the first and the second and the third cleaning liquid.

If the operating pressure of the domestic water connection is too low or unstable 20 is analogous to the first example, a pressure accumulator (in 4 not shown) in the third supply line 13 integrated, can be arranged. Depending on the desired water quality are in the third supply line 13 Water additives can be fed. These water additives preferably serve to improve the water quality, include, for example, surfactants and are also known by the term "water smoother".

In a further education (in 4 not shown) is, if necessary, before the supply of water additives within the third supply line 13 arranged an injector, for example, from a reservoir, the water additives in the third supply line 13 sucked in, mixed and the mixture of water additives and water in the third supply line 13 in the flow direction 24 transported.

1

printing unit

2

coating unit

3

conveying direction

4

investor

5

boom

6

pressure cylinder

7

cleaning device

7.1

The printing cylinder cleaning apparatus

7.2

Gummituchzylinder- / Formzylinder- cleaning

contraption

7.3

Inking / metering system cleaner

8th

Blanket cylinder

9

form cylinder

10

dosing

11

first feed

12

second feed

13

third feed

14

first manifold

15

second manifold

16

first cache

17

second cache

18

first reservoir

19

second reservoir

20

House water supply

21

Compressed air source

22

retrieval system

23

machine control

24

flow direction

25

supply system

26

stopcock

27

pressure reducer

28

pressure switch

29

switching valve

30

check valve

31

water additives

32

accumulator

33

mixing chamber

34

control station

Claims (9)

Supply device for a cleaning device in a processing machine, preferably a rotary printing press or a varnishing machine, having at least two separate supply lines connected to a switchable valve block coupled to the machine control for supplying different cleaning liquids to the cleaning device, characterized in that the cleaning device ( 7 ) each with the first and second supply line ( 11 . 12 ) for a first and second cleaning liquid and with a third supply line ( 13 ) is coupled to water, that the first supply line ( 11 ) with a first storage container ( 18 ) for the first cleaning liquid and the second supply line ( 12 ) with a second storage container ( 19 ) is connected to the second cleaning liquid, and that the third supply line ( 13 ) with a domestic water connection ( 20 ), that in each case in the first supply line ( 11 ) a first, pneumatically acted upon buffer memory ( 16 ) for a first cleaning liquid and in the second supply line ( 12 ) a second, pneumatically acted upon buffer memory ( 17 ) is arranged integrated for a second cleaning liquid. Supply device for a cleaning device in a processing machine, preferably a rotary printing press or a varnishing machine, with a supply line connected by means of switchable valve block for the supply of different cleaning liquids to the Rei nigungsvorrichtung, characterized in that the cleaning device ( 7 ) with a supply line ( 11 ) is coupled for the supply of different cleaning liquids and with the supply line ( 11 ) an upstream, by means of a machine control ( 23 ) switchable valve block ( 14 ), that the valve block ( 14 ) by means of supply line ( 11 ) with an upstream mixing chamber ( 33 ), that in the mixing chamber ( 33 ) - a first supply line ( 11 ) for a first, in a first reservoir ( 18 ) received cleaning liquid, and - a second supply line ( 12 ) for a second, in a second reservoir ( 19 ) received cleaning liquid, and - a third supply line ( 13 ) for a third, from a domestic water connection ( 20 ) supplied cleaning liquid is arranged feeding, and that in each case in the first supply line ( 11 ) a first, pneumatically acted upon buffer memory ( 16 ) for a first cleaning liquid and in the second supply line ( 12 ) a second, pneumatically acted upon buffer memory ( 17 ) is arranged integrated for a second cleaning liquid. Supply device according to claim 1, characterized in that the domestic water connection ( 20 ) into the third supply line ( 13 ) integrated, controllable supply system ( 25 ) is subordinate. Supply device according to claim 1 and 3, characterized in that the supply system ( 25 ) in the flow direction ( 24 ) from a stopcock ( 26 ), a downstream pressure reducer ( 27 ), a downstream pressure switch ( 28 ) and a downstream switching valve ( 29 ) is formed. Supply device according to claim 1 and 3, characterized in that the supply system ( 25 ) with a query system ( 22 ) is connected in terms of circuitry. Supply device according to claim 1 or 2, characterized in that the storage containers ( 18 . 19 ) with an electrical interrogation system ( 22 ) are connected by circuitry. Supply device according to claim 1, characterized in that the supply lines ( 11 to 13 ) after the valve block ( 14 . 15 ) to each cleaning device ( 7 ) are arranged branching. Supply device according to claim 1 or 2, characterized in that in the third supply line ( 13 ) Water additives are fed. Supply device according to claim 1 or 2, characterized in that the third supply line ( 13 ) with an accumulator ( 32 ) connected is.