DE10252812A1 - Cleaning installation for a papermaking/finishing machine and especially a coating applicator, has a number of jet assemblies acting on the machine components to apply an intensive cleaning during working - Google Patents

Abstract

The papermaking or paper finishing machine, and especially a web coating station, has at least one cleaning unit (100e) with a number of cleaning components to give a permanent or intermittent automatic cleaning action while the machine is working and/or when the machine is at rest. The cleaning unit has a number of jet assemblies (250e,252e,254e,256e) to apply an intensive cleaning action on the coating applicator (10e), the doctor (21e) and the counter roller (20e). The jet assemblies have a swing movement, or are shifted for alignment at their cleaning targets. The cleaning station is covered by a shrouding (260e).

Description

The invention relates to a machine for the production or / and finishing of a material web, in particular made of paper or cardboard. It is used in particular on a machine Refinement of such a material web thought, especially one so-called coating machine for one-sided or two-sided application of liquid or pasty Order medium on the running material web with mediation at least a commissioned work.

Machines of the type mentioned are used particularly in the paper industry. Your operation and their purchase are with high operating costs and very high Investment costs connected. That is why downtimes and so that production losses are avoided as far as possible. downtime and thus loss of production caused by web breaks that have different causes can. A cause for Web breaks are soiling of the machine or insufficient cleaned Areas of the machine. The peripheral areas (driver's side and drive side). Web breaks can be special also caused by dirt from the base paper, by deposits of the application medium on machine parts, e.g. B. at the airbars Float dryer, as well as scrap paper scraps.

In addition to the web breaks, other Machine stops occur due to various malfunctions that also occur can be caused by dirt. Heavy or stubborn dirt can lead to quite long downtimes. In connection with cleaning processes, this can take a long time up times occur. In general, performance and start-up delays as a result of insufficiently cleaned Components occur.

Cleaning takes place conventionally such machines manually, including high pressure cleaners as well as mechanical cleaning devices, like brushes, Rags, etc., can be used. In the case of coating machines pursues the strategy at every machine stop that results from any establish occurs or triggered becomes a subject to wear Replace squeegee element (if present), such as a squeegee blade or the like and to manually clean the doctor blade holder or the doctor blade bed. in the Operation contaminating or subject to a risk of pollution surfaces and the like in the area of the commissioned work are at least as needed mechanically / manually cleaned to build up dirt to counteract.

Have manual cleaning operations the disadvantage that accidents and injuries can occur. Generally accidents occur and injuries namely during maintenance and cleaning work more often than in "normal" operation. The disadvantage manual cleaning processes is moreover that the care in cleaning fluctuates and accordingly Overlook contamination or could not be removed sufficiently. This can lead to a build up from contamination and thus to the web breaks or machine stops to lead, the as far as possible are to be avoided.

Are in special contexts automated cleaning arrangements are already known in paper machines, namely especially regarding the cleaning of sieves, e.g. wet sieve, press felt and dryer fabric, in a paper machine. It will refer to this referred to the Voith-DuoCleaner from a traversing device with cleaning head, a high pressure pump unit and an electronic Control exists. An electric motor driven runs on a traverse Traversing trolley to which the actual cleaning head is attached is. The lower part of the cleaning head is rotatable and is driven by recoil forces from tangentially arranged driving nozzles set in rotation. One or more jets of water appear at the lower end under elevated Pressure that loosen the dirt from the sieve. When ordering the Duocleaner in a dry area the cleaning head is from a suction room surrounded, which is sealed against the sieve by means of a flexible spout is. Suction leads dissolved Particles of dirt and reflected water mist. It is envisaged during the Operation of the paper machine permanent cleaning of the concerned Siebs or felt to perform.

Related to coating machines there there are no approaches yet, a "self-cleaning" to provide automated cleaning arrangement. This should be because that with a coating machine even areas that are difficult to access are relatively more complicated Geometry need to be cleaned about mounts for Doctor elements, nozzle channels, gutters and the same. The situation is clearly different than regarding the cleaning of the flat all-round sieve or Felt a paper machine, in which there are usually no accessibility problems or space problems exist. The well-known, only special In this respect, application-related solution "DuoCleaner" cannot Suggestion for improvements regarding cleaning on or in a coating machine.

In connection with coating machines, on the other hand, efforts have already been made to support self-cleaning in the company by means of the applied application medium. This is how it beats DE 44 33 048 A1 before, a doctor knife if necessary or at predetermined time intervals to vibrations of predetermined amplitude and Fre quenz to stimulate in order to crush deposits between the doctor blade and the material web and rinse out by the pressing application medium. The one specifically showing a free jet application in the figure DE 198 01 140 A1 also suggests briefly enlarging a jet outlet opening of the free jet applicator in order to rinse out soiling or disturbing material (such as dirt particles, clumping of the application medium used, lint, dust particles or cellulose fibers detached from the paper web) from the jet nozzle by means of the application medium.

The object of the invention is generally improve the runtime efficiency, especially by avoidance of unintended web breaks, avoidance or reduction of Number of planned machine stops, reduction of downtimes with a stop, acceleration of the performance and restart time. Further personal and machine safety should be increased.

At least the prerequisite for solving this To create a task or at least one addressed sub-task, beats the invention before, the machine mentioned at least with one belonging to the machine Equip cleaning arrangement, which is arranged and designed for this, with the machine running in the normal manufacturing or refinement operating state of the Machine and / or when the machine is at a standstill outside the normal manufacturing or refinement operating state in an exceptional or cleaning operating state permanently or intermittently at least one assigned component or assembly, at least in some areas, of an automated cleaning treatment to undergo.

Automation will Cleaning result independently of human inadequacies, so for an even and if necessary, high cleaning requirements is taken care of. In particular, the build-up of dirt can be reliably prevented will be, or at least be significantly reduced. Particularly advantageous is the possibility in this context cleaning during the operation, whereby only a certain basic cleaning or maintenance cleaning may be carried out. In the event of a machine downtime, it is advisable to do a more intensive one Carry out cleaning using the cleaning arrangement.

The main thought is that at least one area of the machine that is in operation or / and when starting up the machine and / or when shutting down the machine or / and in at least one exceptional operating state of the machine of manufacture serving medium and / or finishing medium, if necessary Application medium, is or could be exposed and / or the risk of is subject to other soiling by means of the cleaning arrangement can be cleaned automatically. Regarding the cleaning arrangement It is especially thought that this is at least one commissioned work or / and a leveling or metering device assigned to it (doctor blade device, if applicable) or / and a surrounding area of the application unit or is assigned to the leveling or metering device.

The machine can advantageously be a associated with the machine Have shielding arrangement through which the at least partially the component to be subjected to the automated cleaning treatment or assembly opposite an environment, in particular at least one neighboring component or neighboring module, can be shielded automatically. This is particularly so advantageous if a liquid Cleaning medium is used, which is based on the neighboring component or Neighboring module could hit. The training proposal specifying the shielding arrangement is primarily, but not exclusively, for cleaning outside of the normal manufacturing or refinement operating state and opened the possibility, a very intensive cleaning, for example using a under great Pressure fed cleaning fluid or provide the like. Through the shielding arrangement impairment prevents the environment.

In this respect, the invention also provides generally ready a machine for manufacturing or / and finishing a material web, in particular made of paper or cardboard, possibly a coating machine for one-sided or double-sided application of liquid or pasty Order medium on the running material web with mediation at least a commissioned work. According to the invention, the machine is characterized at least one shield arrangement associated with the machine from which at least one is preferably automated Component to be cleaned at least in some areas or assembly opposite an environment, in particular at least one neighboring component or neighboring module, can be shielded automatically.

The shielding arrangement can be provided, for example, to shield the complete application unit (such as a so-called coater, speedsizer or the like) or individual assemblies (for example a doctor blade holder, a deflection unit, a dryer) for a cleaning process that takes place outside the application period (i.e. when the machine is at a standstill). Somewhat more generally, it is proposed that the shielding arrangement have at least one application unit and / or a leveling or metering device assigned to it, possibly a doctor blade device, and / or a vice area of application or the leveling or dosing device.

The shielding arrangement can be advantageous at least one automated between a standby position and a shielding position adjustable shielding wall and / or Cover the hood. Furthermore, the shielding arrangement can Arrangement for producing at least one shielding curtain based on supplied shielding medium, possibly water. The shielding medium can, if desired, also serve as a cleaning medium.

The shielding arrangement can be one Define a cleaning room that is closed to the environment in which the cleaning process is carried out in a suitable manner, without affecting the environment. For example, it can be a Area opposite be shielded from the environment that spans the entire width of the machine. It can then over the entire machine width can be cleaned at the same time.

The shielding according to the invention a particularly intensive cleaning is possible, although a high security against interference the environment is reached.

Regardless of whether a shielding arrangement is present or not, can at least by means of the cleaning arrangement a directly or indirectly acting on the running material web or component or assembly contributing to their formation, the at least about stretches the entire width of the material, the cleaning treatment be underneath. One / the cleaning arrangement can be used at the same time cleaning at least on one area of the component or assembly act that of the web width or maximum web width extends. Another possibility is, that a / the cleaning arrangement has a cleaning section, which is adjustable in the direction of the material web width, possibly movable is to successively refer to different sections of a To clean the area of the component or assembly, the at least the material web width or maximum material web width equivalent.

The main thought is that at least one material web treatment roller and / or at least a web guide roller or / and at least one application medium transfer roller or / and one Counter roller can be subjected to the automated cleaning treatment is. The suggestion for further training specifically refers to Rollers that have no direct contact with the material web, such as about an application medium transfer roller, which transfers the application medium to an application medium application roller, which immediately acts on the material web.

Further training is proposed that a / the cleaning arrangement is a cleaning medium application arrangement includes, about the (respective) roller at least in some areas along its circumference with a cleaning medium, preferably with a cleaning liquid or / and a cleaning mist, can be acted upon, preferably at rotating roller. For example, it is thought that as cleaning fluid Water or water with at least one cleaning additive feedable to the roller is. Another possibility is that as a cleaning mist atomized water with at least a cleaning additive or steam can be fed to the circumference of the roller. Furthermore, the cleaning medium can use the circumference of the roller as a pressure cleaning medium under opposite Ambient pressure increased Be able to supply pressure.

The cleaning medium loading arrangement can be a feed nozzle assembly for supplying the cleaning medium to the circumference of the roller.

By the applied cleaning medium Contaminants are loosened on the peripheral surface of the roller and are thus removable together with the cleaning medium. A build-up of dirt can thereby be reliable avoided or at least significantly reduced.

One can provide that the cleaning arrangement has a cleaning medium discharge arrangement, by means of which Scope of the roller cleaning medium together with the dirt it detects or / and soiling detached or loosened by the cleaning medium dischargeable are, preferably with a rotating roller. In contrast is but it prefers that the roller with the cleaning medium in normal Manufacturing or Refinement operating state of the machine can be acted upon and a Removal of the cleaning medium together with any dirt it detects or / and of dirt detached or loosened by the cleaning medium of the scope by means of the running material web and / or by means of at least one mediating an operative connection to the running material web Intermediate roller is provided. It has been shown that with continuously in Operation carried out Clean the circumference of the roller in the specified way constantly for a clean Condition of the roller and small amounts of dirt, that can still occur can be easily removed through the material web without the surface condition the material web and generally the finishing quality of the material web adversely affect.

In addition to constant cleaning of a relevant roller in operation, which can be regarded as basic cleaning or maintenance cleaning, it is also possible to clean a roller using a special cleaning tool or a special cleaning unit outside the normal operation of the machine, in particular with increased cleaning intensity. For this purpose, it is proposed in particular that one / the cleaning arrangement closes at least one roller includes an orderly cleaning tool, which is in cleaning interaction, possibly cleaning contact, with the circumference of the roller or can be brought into cleaning interaction, possibly cleaning contact, automatically with the circumference of the roller. In this case, the cleaning tool can be supplied with a cleaning medium which brings about or supports a cleaning effect of the cleaning contact.

It is also proposed that as Cleaning medium a cleaning liquid and / or a cleaning paste or / and an abrasive cleaning effect unfolding cleaning particles can be fed to the cleaning tool is / are.

With regard to the design of the cleaning tool there are various options. A preferred option provides that the circumference of the roller as a cleaning tool enclosing Cleaning ring is provided along the circumference of the roller adjustable in the direction of its axis by means of an assigned drive is, preferably with a rotating roller. The cleaning ring in an opposite axially offset the roller or a working section of the roller Park position be adjustable. For example, the cleaning ring as a brush ring or be designed as a textile or fleece-like ring.

Another option is as a cleaning tool one with the circumference of the preferably rotating roller over a Circumferential angle and at least part of its width across Provide flexible cleaning structures that can be brought into contact with cleaning. The circumferential angle is preferably less than 360 degrees, preferably but larger than 180 Degree. The cleaning structure can be in along the circumference of the roller Direction of the axis adjustable by means of an associated drive be, preferably with a rotating roller. The cleaning structure can also be designed as a textile or fleece-like structure.

It is generally suggested that in the event of an application of cleaning liquid Cleaning device at least one of the cleaning liquid exposed area of the machine, in particular the component or assembly, a drying device which at least supports drying of the area assigned. The drying device can be designed for this be to generate at least one air flow acting on the area.

A particularly preferred embodiment of the Cleaning arrangement is characterized in that it at least one defines to at least one place to be cleaned or at least an area to be cleaned and / or between areas to be cleaned or areas or / and along at least one to be cleaned Place or at least one cleaning unit movable area to be cleaned having. The cleaning unit can be relative by means of a drive be adjustable to a holding base. The cleaning unit or - if provided the holding base can be driven along a guideway by means of a drive be adjustable.

The course of the guideway and its arrangement hangs in the machine depends on which points or areas are cleaned by means of the cleaning unit should be. So far about the machine width is to be cleaned, it is particularly useful if a crosswalk or a crossbar of the machine the guideway having. The guideway can a parking position preferably provided on the drive side of the machine for the Have cleaning unit or the holding base.

Then difficult to access places and areas can be cleaned advantageously by means of the cleaning unit if the cleaning unit over a multi-articulated, adjustable by means of the drive arm is connected to the holding base. For example, that the cleaning unit for that is designed, at least one area of a leveling and metering device (possibly Squeegee device) to clean automatically. This will be further education suggested that the cleaning unit or at least one cleaning section the same in at least one receiving or holding area of the leveling or dosing device for a leveling or dosing element, possibly a doctor rod or doctor blade, insertable is.

The cleaning arrangement can via a control unit with regard to adjustment movements of the cleaning unit or the holding base or the function arm can be controlled, preferably on the basis a specified or predefinable cleaning program. In this regard offline programming (i.e., based on "theoretical software") or it can be programmed online using a so-called teach-in procedure respectively. It is especially thought that the cleaning program in a programming mode based on granted or specified adjustment movements can be specified.

The cleaning arrangement can advantageously have a sensor arrangement which detects current situations and / or operating states or / and soiling or degrees of soiling and / or cleaning treatment states. The control unit is then preferably designed to control the cleaning arrangement on the basis of detection results of the sensor arrangement. The sensor arrangement allows, for example, that not only is a program rigidly processed, but that current requirements are dealt with. In this way, different machine positions can be recorded and collisions avoided. Points to be cleaned can be found, soiling can be recognized and, depending on this, suitable cleaning can be initiated. In particular, the degree of contamination can be recognized and accordingly appropriate Rei cleaning measures and cleaning parameters can be selected. An important parameter is the cleaning intensity. It can be ensured that the cleaning is carried out with the required intensity, but not with excessive intensity. In general, success can be monitored and then - after cleaning - the cleaning operation can be completed again.

Cleaning is particularly useful dependent on on the sensitivity of the area to be cleaned. So can on material properties, strengths, chemical resistance etc. respect be taken. The cleaning arrangement is preferably designed to Cleaning parameters independently adapt to the sensitivity of the area to be cleaned, if necessary based on the detection results of the sensor arrangement. through the sensor arrangement can also also damage recognized and reported, for example to the control room or an alarm system.

It is generally suggested that the control unit for it is formed, the cleaning arrangement on the basis of detection results of Activate sensor arrangement with regard to adjustment movements of the Cleaning unit or the holding base or the functional arm or / and with regard to the admission or termination or / and the type or / and intensity or / and other parameters of the cleaning treatment.

It is particularly useful to use the cleaning unit to equip itself with at least one sensor. At least one A sensor, in particular a sensor of the cleaning unit, can be a optical sensor or an electronic camera, possibly a CCD camera. Furthermore, at least one sensor, in particular a sensor of the cleaning unit, a touching working sensor, possibly a surface texture or surface structure responsive sensor. It is also proposed that at least a sensor, in particular a sensor of the cleaning unit, at least one an electrical quantity, possibly an electrical resistance or capacitance or any other related electrical quantity, grasping Sensor.

For the sensory detection of contamination or cleaning success a corresponding one based on the addressed sensors Analysis software are used. In the case of an electronic Camera will contain the analysis software image processing procedures. alternative or additionally it makes sense to use special sensors to record the pollution thickness Detection of discoloration, capacitive Measuring sensors and sensors based on the detection of an electrical Resistance to detect contamination.

Based on the detection results of the Sensor arrangement can the cleaning parameters are set specifically. adjusted Parameters are, for example, the cleaning temperature, the composition of the cleaning media, the intensity of the cleaning (e.g. speed a mechanical cleaning movement and / or volume flow Cleaning medium), the pressure of the cleaning medium and a feed rate, each may dependent on a requirement of how clean a location or area will be should.

It has already been mentioned that the cleaning process both in operation and during a downtime can be done. A cleaning in the standstill phase (i.e. outside of normal machine operation) can be at a comparatively high intensity with maximum Cleaning effect take place, since no harmful repercussions on the operation of the Machine fear are. However, when cleaning in normal machine operation it is recommended to set the cleaning parameters rather carefully, a retroactive effect on the coating process or manufacturing process on everyone To avoid case.

It is generally suggested that the cleaning arrangement is lower in the first cleaning operating mode cleaning intensity and switchable to a second cleaning mode of operation of greater cleaning intensity is, the first cleaning operating mode preferably the normal manufacturing or finishing operation of the machine and the second cleaning operation mode preferably the exceptional or cleaning operating state of the machine equivalent. It is also proposed that the cleaning arrangement can be put into a maintenance or precautionary cleaning operation mode in which a prophylactic cleaning of low cleaning intensity is carried out, independently of whether there is contamination.

It is in this context everything (but not exclusively) thought that the first and the second cleaning operating mode or the maintenance or precautionary cleaning mode of operation is based on modes of operation the cleaning unit.

An advantageous embodiment draws is characterized in that the cleaning arrangement in terms of Cleaning unit in a monitoring mode is relocatable, in which the cleaning unit to at least one potentially cleanable or otherwise to be checked or at least an area to be potentially cleaned or otherwise checked or / and between or along potentially to be cleaned or otherwise how to check places or areas moved to prevent the occurrence of contamination to record or carry out other types of checks. How already hinted, can the different types of checks, for example on the occurrence of damage Respectively.

If the cleaning unit is in use, so your work area should be for People should be locked, which is preferably done automatically by means of appropriate warning signals or the like. One can do automated surveillance of the range of motion of the cleaning unit, which in the case of a Occurrence of unexpected obstacles, such as the warning signals non-observers, the cleaning unit stops automatically, so that accidents are reliably avoided become.

At machine downtimes for one use intensive cleaning and on situations that may lead to higher levels of contamination to react quickly or preventively is suggested as a further education, that a / the control unit on exceptional situations of the machine, such as a machine stop, a web break or a web cut, and activated the cleaning arrangement, if necessary at least with regard the operation of the cleaning unit, or from the first to the second Cleaning mode switches. In particular, it is thought to start the cleaning unit automatically or if it already has was in operation, automatically to the more intensive cleaning mode switch.

It has already been mentioned that the cleaning unit over the machine width or at least the web width can be moved, if necessary by means of the drive for this width can be moved. The cleaning unit is preferred made relatively compact and then appropriately designated as a "cleaning head".

The cleaning unit or the cleaning head may include one or more of the following: one Cleaning medium supply device for supplying cleaning medium, especially a cleaning liquid or / and cleaning steam, to an area to be cleaned; a high pressure application device to apply a pressure to an area to be cleaned with respect to ambient pressure under elevated Pressurized cleaning medium, especially a cleaning liquid or / and cleaning steam; a suction device for removing supplied Cleaning medium, possibly together with detached or absorbed dirt; a pneumatic cleaning device for blowing or / and suction Cleaning an area to be cleaned; an ultrasound application device for applying ultrasound to an area to be cleaned; a blast chiller for subjecting an area to be cleaned to shock cooling, preferably based on the action of dry ice; a touching one mechanical cleaning device, preferably with at least one replaceable, mechanically acting on an area to be cleaned, preferably by means of a drive, movable cleaning element. As a cleaning element of the mechanical cleaning device's can for example at least one sponge element and / or at least a microfiber structure and / or at least one with an abrasive effect Element or / and at least one brush element can be provided.

A particularly preferred embodiment of the This distinguishes the cleaning unit or the cleaning head from that a cleaning medium supply device for supplying Cleaning medium (in particular a cleaning liquid and / or cleaning steam) to an area to be cleaned and a suction device for removing supplied Cleaning medium, possibly together with detached or absorbed dirt, as integral parts of the cleaning unit or the cleaning head are provided. The cleaning medium supply device can be advantageous be designed as a high-pressure application device for application of the area to be cleaned with an increased pressure compared to ambient pressure standing cleaning medium.

The cleaning medium supply device can a movement supporting the cleaning by means of a drive displaceable nozzle arrangement exhibit. It becomes particularly a rotational or orbital movement the nozzle arrangement. Furthermore, the cleaning unit or the cleaning head can be a touching one have mechanical cleaning device, preferably with at least an interchangeable, mechanically on an area to be cleaned acting cleaning element, for example a brush element or similar. The cleaning element is preferably by means of of a drive can be put into a movement that supports cleaning. It is particularly thought that the cleaning element in a rotational or orbital movement is displaceable. The drive the nozzle arrangement or the cleaning element can advantageously be based on the supplied cleaning medium.

As a cleaning liquid, for example Water, preferably heated Water or / and water with at least one active ingredient can be used his. It is generally thought that an operating temperature for the cleaning fluid or / and a relative amount of active ingredient or / and the type of Active ingredient is adjustable, if necessary on the basis of acquisition results the sensor arrangement, if such is provided.

The cleaning unit or the cleaning head can advantageously have a contact-working sealing arrangement, which is or can be brought into sealing engagement with an assigned area of the machine to be cleaned, in order to move to a work area which is delimited on the one hand by the area to be cleaned and on the other hand by the cleaning unit or the cleaning head to seal on the outside. The work area or within the work The cleaning medium can then be fed into the room without impairing the surroundings, and the cleaning medium can, if desired, be extracted again.

The invention also provides a method ready for at least partial cleaning of a machine Production or / and finishing of a material web, in particular made of paper or cardboard. The procedure can be specific to one Coating machine for one-sided or two-sided application of liquid or pasty Order medium on the running material web through the mediation of obtain at least one commissioned work. According to the invention, that the cleaning is done mechanically and automatically. The procedure can in particular by means of an automatic cleaning arrangement carried out with the machine running in normal manufacturing or upgrading operating state of the machine and / or when the machine is at a standstill Machine outside the normal manufacturing or refinement operating state, for example in an exceptional or cleaning mode. The cleaning can be permanent or intermittent and at least we can a component or assembly arranged in the cleaning arrangement refer and this at least in some areas of automated cleaning treatment undergo.

• – Die Vorrichtung ist während des Betriebs (ggf. ständig) im Einsatz.
• – Die Vorrichtung wirkt über die gesamte Maschinenbreite.
• – Die Vorrichtung reinigt einen sich drehenden Körper, der in direktem oder indirektem Kontakt mit der Materialbahn steht.
• – Der sich drehende Körper kann beispielsweise eine Walze sein, die direkt den Kontakt zur Materialbahn hat oder die keinen direkten Kontakt zur Materialbahn hat, sondern über noch wenigstens eine Zwischenwalze, beispielsweise eine Übertragungswalze, auf die Materialbahn wirkt.
• – Es wird ein Reinigungsmedium auf den sich drehenden Körper aufgebracht.
• – Das Reinigungsmedium löst Verunreinigungen auf der Umfangsfläche des drehenden Körpers an. Beim Kontakt des drehenden Körpers mit der Materialbahn oder mit einer vorgeschalteten Zwischenwalze werden die Verunreinigungen durch die Warenbahn bzw. durch die Zwischenwalze und dann durch die Warenbahn aufgenommen und abgeführt.
• – Die Vorrichtung kann besonders zweckmäßig zum Reinigen einer Gegenwalze eines Auftragswerks eingesetzt werden, die direkten Kontakt mit der Materialbahn hat.
• – Als Reinigungsmedium kann Wasser mit oder ohne Zusätze verwendet werden.
• – Das Reinigungsmedium kann als gleichmäßiger Nebel aus Dampf oder Nebel in geeigneten Mengen auf die Umfangsfläche aufgetragen werden. Der Nebel kann beispielsweise aus Einzeldüsen mit sehr kleinem Düsenquerschnitt bei sehr hohem Druck (beispielsweise 10 bar) erzeugt werden.
• – Es wird speziell daran gedacht, das Reinigungsmedium nur in sehr geringen Mengen aufzutragen.

Within the scope of the above proposed inventions and further training, a cleaning device is provided in a coating machine, possibly in or on a coater, and a corresponding cleaning method with the following features to be provided alternatively or in combination:

• - The device is in operation (possibly continuously).
• - The device works across the entire width of the machine.
• - The device cleans a rotating body that is in direct or indirect contact with the material web.
• The rotating body can be, for example, a roller which has direct contact with the material web or which has no direct contact with the material web, but rather acts on the material web via at least one intermediate roller, for example a transfer roller.
• - A cleaning medium is applied to the rotating body.
• - The cleaning medium dissolves impurities on the peripheral surface of the rotating body. When the rotating body comes into contact with the material web or with an upstream intermediate roller, the contaminants are taken up and removed by the material web or by the intermediate roller and then by the material web.
• - The device can be used particularly conveniently for cleaning a counter roll of a coating unit that has direct contact with the material web.
• - Water with or without additives can be used as the cleaning medium.
• - The cleaning medium can be applied as a uniform mist of steam or mist in suitable amounts to the peripheral surface. The mist can be generated, for example, from individual nozzles with a very small nozzle cross section at very high pressure (for example 10 bar).
• - Special care is taken to apply the cleaning medium only in very small quantities.

• – Der Aufbau von Verschmutzungen wird verhindert bzw. – im ungünstigsten Fall – deutlich verringert, wodurch die Laufzeit vor dem nächsten Maschinenstillstand erheblich verringert und somit der Laufzeitwirkungsgrad deutlich erhöht wird.
• – Die Reinigung erfolgt automatisch im Betrieb der Maschine.
• – Ein weiterer Effekt ist, dass Stillstandzeiten, soweit diese noch auftreten, wesentlich reduziert werden, wodurch der Laufzeitwirkungsgrad zusätzlich verbessert wird.
• – Verschmutzungen können sehr effektiv bekämpft werden.
• – Die Reinigung kann effektiv mit nur sehr geringen Mengen an Reinigungsmedium erfolgen.
• – Durch die vorzugsweise permanente Reinigung während des Betriebs reicht eine vergleichsweise geringe Reinigungsintensität aus.
• – Wird das Reinigungsmedium bzw. werden die Verschmutzungen über die Materialbahn abgeführt, so ist eine spezielle Abfuhreinrichtung nicht mehr erforderlich, und es kann auch die Reinigung von Abwässern entfallen.
• – Die Reinigung auf die angegebene Weise kann deutlich gründlicher als eine konventionelle Reinigung sein, wodurch die Sicherheit gegen Störung noch weiter zunimmt.
• – Zur Reinigung auf die angegebene Weise sind keine zusätzlichen bewegten Teile nötig, so dass die Maschine kostengünstig entspre chend ausführbar ist und die Betriebskosten nicht oder nur sehr geringfügig erhöht werden.
• – Da beispielsweise eine einfache Düsenanordnung ausreicht, ist ein sehr platzsparender Einbau möglich.
• – Aufgrund der automatisierten Reinigung wird eine sehr hohe Personensicherheit erreicht.
• – Da eine sehr geringe Reinigungsintensität ausreicht, können schädliche Rückwirkungen auf den Auftragsprozess vermieden werden. Dies gilt auch bei Aufnahme des Reinigungsmediums und abgelöster Verunreinigungen durch die Materialbahn, da nur sehr geringe Mengen von der Materialbahn aufgenommen werden müssen.

The advantages include the following:

• - The build-up of dirt is prevented or - in the worst case - significantly reduced, which significantly reduces the runtime before the next machine shutdown and thus significantly increases the runtime efficiency.
• - Cleaning takes place automatically while the machine is operating.
• - Another effect is that downtimes, insofar as they still occur, are significantly reduced, which further improves runtime efficiency.
• - Soiling can be combated very effectively.
• - The cleaning can be done effectively with only very small amounts of cleaning medium.
• - Due to the preferably permanent cleaning during operation, a comparatively low cleaning intensity is sufficient.
• - If the cleaning medium or the contaminants are removed via the material web, a special discharge device is no longer required, and the cleaning of waste water can also be omitted.
• - The cleaning in the specified way can be much more thorough than conventional cleaning, which increases the security against malfunction even further.
• - For cleaning in the specified manner, no additional moving parts are necessary, so that the machine can be carried out accordingly and the operating costs are increased only slightly or not at all.
• - Since, for example, a simple nozzle arrangement is sufficient, very space-saving installation is possible.
• - Due to the automated cleaning, a very high level of personal safety is achieved.
• - Since a very low cleaning intensity is sufficient, harmful repercussions on the application process can be avoided. This also applies to the absorption of the cleaning medium and detached contaminants through the material web, since only very small amounts of the mate rialbahn must be included.

• – Es kann eine Offline-Programmierung (d. h. ohne Unterbrechung des Maschinenbetriebs, mit rein theoretischer Software) oder/und eine Online-Programmierung (so genanntes Teach-In-Verfahren) vorgesehen sein.
• – Als Reinigungseinheit kommen diverse Ausbildungen in Kombination oder alternativ in Betracht: Als Hochdruckreinigungskopf, als Reinigungskopf mit Absaugung, als pneumatische Reinigungsvorrichtung (blasend oder/und saugend), als Dampfreinigungseinheit (gewünschtenfalls mit Absaugung) als Ultraschall-Reinigungskopf, als Reinigungseinheit zur Reinigung auf Grundlage von Trockeneis (Schockkühlung), als mechanische Reinigungseinheit, ggf. mit auswechselbaren Verschleißteilen (z. B. Waschschwamm, Mikrofasertuch, abrasiven Reinigungselementen (etwa Schmirgelpapier), Bürsten, usw.).
• – Die Reinigungsvorrichtung, beispielsweise speziell der "Reinigungsroboter" bzw. die Reinigungseinheit, kann mit einer Sensorik ausgestattet sein, die es erlaubt, nicht nur starr ein Programm abzuarbeiten, sondern auf die aktuellen Erfordernisse einzugehen. So können verschiedene Maschinenstellungen erfasst und so Kollisionen vermieden werden. Ferner können zu reinigende Stellen gefunden werden, Verschmutzungen und der Grad der Verschmutzungen erkannt werden und dementsprechend eine Reinigung eingeleitet werden, wobei geeignete Reinigungsmaßnahmen und Parameter automatisiert gewählt werden können. Insbesondere kann die Reinigung automatisch mit der erforderlichen Intensität durchgeführt werden und der Erfolg überwacht und dann schließlich die Reinigungsoperation wieder abgeschlossen werden. Die Sensorik ermöglicht es überdies, eine Reinigung in Abhängigkeit von der Empfindlichkeit einer zu reinigenden Stelle vorzusehen, wobei auf Materialeigenschaften, Festigkeit und chemische Beständigkeit durch selbsttätige Anpassung der Reinigungsparameter Rücksicht genommen werden kann. Anstelle der Berücksichtigung derartiger Empfindlichkeiten auf Grundlage von Sensormessergebnissen können diese auch auf Grundlage von vorgegebenen Daten hinreichend berücksichtigt werden. Mittels der Sensorik können ferner Beschädigungen erkannt und diese an Schaltwarte oder Alarmsysteme weitergeleitet werden.
• – Für die sensorische Erfassung von Verschmutzungen bzw. des Reinigungserfolgs kann zweckmäßig eine CCD-Kamera oder dergleichen mit der entsprechenden Analysesoftware zum Einsatz kommen. Alternativ oder zusätzlich sind auch andere Sensoren einsetzbar, z. B. Sensoren zur Erfassung der Verschmutzungspartikel, Erfassung einer Verfärbung, zur Durchführung von kapazitiven Messverfahren oder Messverfahren, die den elektrischen Widerstand zur Verschmutzungserkennung nutzen.
• – Einstellbare Parameter können beispielsweise die folgenden sein (alternativ oder gleichzeitig): Reinigungstemperatur, Zusammensetzung des Reinigungsmediums bzw. der Reinigungsmedien, Intensität der Reinigung, z. B. Geschwindigkeit der mechanischen Reinigungsbewegung bzw. Reinigungsbewegungen oder/und Volumenstrom des Reinigungsmediums, Druck des Reinigungsmediums, Vorschub bzw. Vorschubgeschwindigkeit (je nach Vorgabe, wie sauber die betreffende Stelle oder Fläche werden soll).
• – Der Reinigungsvorgang kann vorteilhaft während des normalen Betriebs der Streichmaschine oder/und in deren Stillstandzeit erfolgen. Eine Reinigung in der Stillstandphase kann bei sehr hoher Intensität mit maximierter Reinigungswirkung erfolgen. Für die Reinigung im Betrieb sollten die Reinigungsparameter eher vorsichtig eingestellt werden, um eine Rückwirkung auf den Beschichtungs- oder Auftragsprozess in jedem Fall zu vermeiden.
• – Es kann zweckmäßig vorgesehen sein, dass die Reinigungsvorrichtung bzw. der "Reinigungsroboter" vollautomatisch startet, wenn ein Bahnabriss auftritt bzw. die Maschine aus anderen Gründen angehalten wird. Gegebenenfalls kann eine automatische Umschaltung von einem weniger intensiven, dem Normalbetrieb der Maschine zugeordneten Reinigungsmodus in den intensiveren Stillstands-Reinigungsmodus erfolgen.
• – Die Reinigungseinheit bzw. der "Roboter" kann entlang einer Fahrbahn verfahrbar sein, die beispielsweise Bestandteil eines üblichen Querlaufstegs oder einer Quertraverse sein kann.
• – Ist die Reinigungseinheit bzw. der "Roboter" im Einsatz, so kann sein Arbeitsbereich für Personen vollautomatisch gesperrt werden. Ist die Reinigungseinheit bzw. der "Roboter" nicht im Einsatz, so kann er eine Parkposition annehmen, die vorzugsweise auf der Triebseite neben der Streichmaschine angeordnet ist.
• – Man kann vorsehen, dass die Reinigungseinheit bzw. der "Reinigungsroboter" in einem speziellen Betriebsmodus "prophylaktisch" vorsichtig reinigend sich bewegt, beispielsweise traversiert, ohne dass zwingend konkrete Verschmutzungen vorliegen.
• – In einem weiteren Betriebsmodus kann die Reinigungseinheit bzw. der "Reinigungsroboter" ohne Reinigungsfunktion ständig oder in Intervallen einen Bereich abfahren, beispielsweise traversieren, um zu überwachen, ob Verschmutzungen oder Beschädigungen aufgetreten sind.

Within the scope of the above proposed inventions and further developments, a cleaning device for or in a coating machine is also provided, which has at least one cleaning unit in the coating machine that flexibly and automatically takes over cleaning unit, possibly cleaning head. The cleaning unit can be selectively movable by means of a multi-jointed function arm and can form a "cleaning robot" with the function arm. Alternatively or in combination, the cleaning device can also have the following features:

• - Offline programming (ie without interrupting machine operation, with purely theoretical software) and / or online programming (so-called teach-in procedure) can be provided.
• - Various configurations in combination or alternatively come into consideration as a cleaning unit: as a high-pressure cleaning head, as a cleaning head with suction, as a pneumatic cleaning device (blowing or / and suction), as a steam cleaning unit (if necessary with suction) as an ultrasonic cleaning head, as a cleaning unit for cleaning on the basis dry ice (shock cooling), as a mechanical cleaning unit, possibly with replaceable wear parts (e.g. washing sponge, microfiber cloth, abrasive cleaning elements (e.g. emery paper), brushes, etc.).
• - The cleaning device, for example especially the "cleaning robot" or the cleaning unit, can be equipped with a sensor system that allows not only to rigidly process a program, but to respond to the current requirements. In this way, different machine positions can be recorded and collisions avoided. In addition, points to be cleaned can be found, soiling and the degree of soiling can be recognized and cleaning can be initiated accordingly, suitable cleaning measures and parameters being able to be selected automatically. In particular, the cleaning can be carried out automatically with the required intensity and the success can be monitored and then finally the cleaning operation can be completed again. The sensor technology also makes it possible to provide cleaning depending on the sensitivity of a location to be cleaned, whereby material properties, strength and chemical resistance can be taken into account by automatically adjusting the cleaning parameters. Instead of taking such sensitivities into account on the basis of sensor measurement results, these can also be adequately taken into account on the basis of predetermined data. Damage can also be detected by means of the sensor system and transmitted to the control room or alarm systems.
• - A CCD camera or the like with the appropriate analysis software can expediently be used for the sensory detection of soiling or the success of cleaning. Alternatively or additionally, other sensors can also be used, e.g. B. sensors for detecting the dirt particles, detecting discoloration, for carrying out capacitive measuring methods or measuring methods that use the electrical resistance for dirt detection.
• - Adjustable parameters can be, for example, the following (alternatively or simultaneously): cleaning temperature, composition of the cleaning medium or the cleaning media, intensity of the cleaning, eg. B. Speed of the mechanical cleaning movement or cleaning movements and / or volume flow of the cleaning medium, pressure of the cleaning medium, feed or feed speed (depending on the specification of how clean the area or area in question should be).
• - The cleaning process can advantageously take place during normal operation of the coating machine and / or during its downtime. Cleaning during the standstill phase can be carried out at a very high intensity with a maximized cleaning effect. For cleaning during operation, the cleaning parameters should be set rather carefully in order to avoid an effect on the coating or application process in any case.
• It can advantageously be provided that the cleaning device or the "cleaning robot" starts fully automatically when a web break occurs or the machine is stopped for other reasons. If necessary, an automatic switchover from a less intensive cleaning mode assigned to normal operation of the machine into the more intensive standstill cleaning mode can take place.
• - The cleaning unit or the "robot" can be moved along a roadway, which can be part of a conventional crosswalk or a crossbar, for example.
• - If the cleaning unit or the "robot" is in use, its work area can be locked fully automatically for people. If the cleaning unit or the "robot" is not in use, it can assume a parking position, which is preferably arranged on the drive side next to the coating machine.
• - It can be provided that the cleaning unit or the "cleaning robot" moves in a special operating mode "prophylactically" in a carefully cleaning manner, for example traversed, without the need for specific soiling.
• - In a further operating mode, the cleaning unit or the "cleaning robot" can continuously or at intervals pass through an area without a cleaning function, for example traverse, in order to monitor whether soiling or damage has occurred.

• – Die vorgeschlagene Reinigungsvorrichtung ermöglicht eine effektive Bekämpfung von Verschmutzungen. Dabei wird zum einen der Aufbau von Verschmutzungen verhindert bzw. verringert, was die Laufzeit vor dem nächsten Maschinenstillstand erheblich verlängert und somit den Laufzeitwirkungsgrad erhöht. Hierzu trägt insbesondere eine vorzugsweise vorzusehende Reinigung während des Betriebs der Streichmaschine bei. Zum anderen wird die Zeit, die ein Maschinenstillstand dauert, wesentlich reduziert, wodurch der Laufzeitwirkungsgrad zusätzlich verbessert wird.
• – Die Reinigung mittels der Reinigungsvorrichtung kann überdies deutlich gründlicher als eine konventionelle manuelle Reinigung sein, wodurch die Sicherheit gegen Störungen noch weiter zunimmt.
• – Da die Reinigungsvorrichtung die Reinigung übernimmt, wird eine hervorragende Personensicherheit erreicht. Ferner gewährleistet die Reinigungsvorrichtung eine hervorragende Maschinensicherheit, da die Reinigungsvorrichtung Maschinenzustände und Maschinenkomponenten geeignet berücksichtigen kann. Menschen könnten versehentlich oder aus Unachtsamkeit in eine Gefahrenstelle greifen. Derartige Einwirkungen auf Gefahrenstellen durch die Reinigungsvorrichtung können mit hoher Sicherheit vermieden werden.

The advantages include the following:

• - The proposed cleaning device enables effective control of dirt. On the one hand, the build-up of contamination is prevented or reduced, which considerably extends the runtime before the next machine downtime and thus increases the runtime efficiency. In particular, cleaning, which should preferably be provided, during the operation of the coating machine contributes to this. On the other hand, the time that machine downtimes are reduced is significantly reduced, which further improves runtime efficiency.
• - The cleaning using the cleaning device can also be much more thorough than a conventional manual cleaning, whereby the security against malfunctions increases even further.
• - Since the cleaning device does the cleaning, excellent personal safety is achieved. Furthermore, the cleaning device ensures excellent machine safety, since the cleaning device can take machine conditions and machine components into account appropriately. People could accidentally or accidentally reach into a danger zone. Such effects on danger spots by the cleaning device can be avoided with a high degree of certainty.

Within the scope of the above invention and suggestions for further education a cleaning unit is also provided, among other things or a cleaning head that is filled with a cleaning liquid, for example water, is operated under high pressure and critical Places in a coating machine cleans, for example rollers, Squeegee holders, ink trays etc. The cleaning head is preferably over the Machine width movable and has a suction device that the fed The cleaning medium is removed together with dirt.

• – Der Reinigungskopf kann bewegte Teile, beispielsweise bewegte Düsen oder mechanische Reinigungselemente, enthalten, die die Reinigung unterstützen und vorzugsweise durch das Reinigungsmedium angetrieben werden.
• – Die Reinigungsflüssigkeit, beispielsweise das Reinigungswasser, kann temperiert eingesetzt werden oder/und mit Reinigungsmittel versehen sein. Es kann diesbezüglich eine Einstellung entsprechend dem Ausmaß der Verschmutzung und der Empfindlichkeit einer jeweiligen Stelle oder Oberfläche vorgesehen sein.
• – Der Reinigungskopf kann alternativ oder zusätzlich auch Dampf auf die zu reinigende Stelle bzw. den zu reinigenden Bereich einwirken lassen.
• – Der Reinigungsvorgang läuft vorzugsweise vollautomatisch ab und kann im Betrieb der Streichmaschine oder/und in einer Stillstandzeit der Maschine erfolgen. Die Reinigung in der Stillstandzeit kann sich durch eine sehr hohe Reinigungsintensität mit maximaler Reinigungswirkung auszeichnen. Die Reinigungsparameter bei Reinigung im Betrieb der Streichmaschine (etwa der Druck, die Temperatur, die Durchflussmenge usw.) sollten eher vorsichtig eingestellt werden, um eine Rückwirkung auf die Funktion der Maschine, nämlich den Streichprozess, in jedem Fall zu vermeiden. Die angesprochene Absaugung ist für den Einsatz des Reinigungskopfes während des Maschinenbetriebs besonders sinnvoll, um Einwirkungen des Reinigungsmediums auf den Streichprozess zuverlässig zu verhindern. Es können in diesem Zusammenhang vorteilhaft berührende Dichtungen zum Einsatz kommen, selbst wenn der Kopf ansonsten berührungslos arbeitet.
• – Der Reinigungskopf startet vorzugsweise vollautomatisch, sobald ein Bahnabriss auftritt oder die Maschine aus anderen Gründen (etwa geplant) angehalten wird. War der Reinigungskopf zuvor schon im Einsatz, so kann vollautomatisch auf einen bzw. den intensiveren Stillstands-Modus umgeschaltet werden.
• – Die Reinigungswirkung des Reinigungskopfes kann durch den Einsatz mindestens eines Ultraschallschwingers unterstützt werden, der Bestandteil des Reinigungskopfes oder einer zu reinigenden Stelle oder Fläche ist.
• – Der durch den Reinigungskopf durchgeführte Reinigungsvorgang kann für besondere Einsatzfälle auch auf Grundlage von Luft als Reinigungsmedium erfolgen, wobei ein Wegblasen oder/und Aufsaugen vorgesehen sein kann. Dies ist besonders sinnvoll zur Bekämpfung von Staub, Papierfetzen und Ascheresten.
• – Es kann eine sensorische Erfassung auftretender Verschmutzungen oder/und des Reinigungserfolgs vorgesehen sein. Vorzugsweise können die Intensität oder/und Dauer der Reinigungsbehandlung oder/und der Ort der Reinigungsbehandlung abhängig von der erfassten Verschmutzung automatisch variiert werden. Beispielsweise kann der Reinigungskopf permanent arbeiten oder alternativ automatisch ausschließlich bei Bedarf kurz und schonend nur an der gerade verschmutzten Stelle aktiv werden.
• – Für die sensorische Erfassung der Verschmutzungen (bzw. des Reinigungserfolgs) kann beispielsweise eine elektronische Kamera (etwa CCD-Kamera) mit entsprechender Analysesoftware zum Einsatz kommen. Alternativ oder zusätzlich können auch andere Sensoren verwendet werden, beispielsweise Sensoren zur Erfassung der Verschmutzungsdicke, Erfassung einer Verfärbung, kapazitive Messverfahren oder Messverfahren, die den elektrischen Widerstand zur Verschmutzungserkennung nutzen, durchführende Sensoren.
• – Ist der Reinigungskopf nicht im Einsatz, so nimmt er vorzugsweise eine Parkposition ein, die sich beispielsseite auf der Triebseite neben der Streichmaschine befindet.
• – Der Reinigungskopf kann nach einer zweckmäßigen Ausgestaltung in einem speziellen Betriebsmodus "prophylaktisch" vorsichtig reinigend traversieren, ohne dass konkrete Verschmutzungen vorliegen.
• – Der Reinigungskopf kann nach einer weiteren zweckmäßigen Ausgestaltung in einem weiteren Betriebsmodus ohne Reinigungsfunktion ständig oder in Intervallen traversieren und dabei überwachen, ob Verschmutzungen oder Beschädigungen aufgetreten sind.

In combination or alternatively, the cleaning head or the cleaning unit can also have the following features:

• - The cleaning head can contain moving parts, for example moving nozzles or mechanical cleaning elements, which support cleaning and are preferably driven by the cleaning medium.
• - The cleaning liquid, for example the cleaning water, can be used at a temperature or / and can be provided with cleaning agents. In this regard, an adjustment can be made according to the degree of soiling and the sensitivity of a particular location or surface.
• - Alternatively or additionally, the cleaning head can also let steam act on the area to be cleaned or the area to be cleaned.
• - The cleaning process is preferably fully automatic and can be carried out while the coating machine is in operation and / or when the machine is at a standstill. Cleaning during downtime can be characterized by a very high cleaning intensity with maximum cleaning effect. The cleaning parameters for cleaning during operation of the coating machine (for example the pressure, the temperature, the flow rate, etc.) should be set rather carefully in order to avoid an effect on the function of the machine, namely the coating process, in any case. The mentioned extraction is particularly useful for the use of the cleaning head during machine operation in order to reliably prevent the cleaning medium from affecting the coating process. In this context, contacting seals can be used advantageously, even if the head otherwise works without contact.
• - The cleaning head preferably starts fully automatically as soon as a web break occurs or the machine is stopped for other reasons (such as planned). If the cleaning head was already in use, you can switch automatically to one of the more intensive standstill modes.
• - The cleaning effect of the cleaning head can be supported by the use of at least one ultrasonic vibrator, which is part of the cleaning head or a place or surface to be cleaned.
• - For special applications, the cleaning process carried out by the cleaning head can also take place on the basis of air as the cleaning medium, in which case blowing away and / or suction can be provided. This is particularly useful for combating dust, scraps of paper and ash residues.
• - A sensory detection of soiling and / or cleaning success can be provided. The intensity and / or duration of the cleaning treatment and / or the location of the cleaning treatment can preferably be varied automatically depending on the contamination detected. For example, the cleaning head can work permanently or alternatively, automatically and only if necessary, be activated briefly and gently only at the point that is currently dirty.
• An electronic camera (such as a CCD camera) with appropriate analysis software can be used, for example, for the sensory detection of the soiling (or the success of cleaning). As an alternative or in addition, other sensors can also be used, for example sensors for detecting the thickness of contamination, detection of discoloration, capacitive measuring methods or measuring methods that use the electrical resistance for detecting dirt, sensors that carry out.
• - If the cleaning head is not in use, it preferably occupies a parking position, which is located on the drive side next to the coating machine, for example.
• - According to an expedient embodiment, the cleaning head can be traversed carefully "prophylactically" in a special operating mode without concrete contamination being present.
• - According to a further expedient embodiment, the cleaning head can traverse continuously or at intervals in a further operating mode without a cleaning function and can monitor whether soiling or damage has occurred.

• – Der vorgeschlagene Reinigungskopf (bzw. die vorgeschlagene Reinigungseinheit) ermöglicht eine effektive Bekämpfung von Verschmutzungen, insbesondere im Hinblick auf die eingangs angesprochenen Aufgaben. Dabei kann zum einen der Aufbau von Verschmutzungen verhindert bzw. verringert werden, was die Laufzeit vor dem nächsten Stillstand erheblich verlängert und somit den Laufzeitwirkungsgrad erhöht. Hierzu trägt insbesondere eine Reinigung während des Maschinenbetriebs erheblich bei. Zum anderen kann die Zeit, die ein Maschinenstillstand andauert, wesentlich reduziert werden, wodurch der Laufzeitwirkungsgrad zusätzlich verbessert wird.
• – Die Reinigung mittels eines Reinigungskopfs oder allgemein einer Reinigungseinheit wie angesprochen kann deutlich gründlicher als eine konventionelle manuelle Reinigung sein, wodurch die Sicherheit gegen Störungen des Maschinenbetriebs weiter zunimmt.
• – Es kann eine hervorragende Sicherheit für Personen und für die Maschine erreicht werden.

The advantages include the following:

• - The proposed cleaning head (or the proposed cleaning unit) enables effective control of dirt, particularly with regard to the tasks mentioned at the beginning. On the one hand, the build-up of contamination can be prevented or reduced, which considerably extends the runtime before the next shutdown and thus increases the runtime efficiency. Cleaning during machine operation in particular makes a significant contribution to this. On the other hand, the time that a machine is at a standstill can be significantly reduced, which further improves runtime efficiency.
• - Cleaning using a cleaning head or a cleaning unit in general as mentioned can be significantly more thorough than conventional manual cleaning, which further increases the security against malfunctions in machine operation.
• - Excellent safety for people and for the machine can be achieved.

Within the scope of the above invention and further training proposal is also provided, among other things a cleaning device in or for a coating machine, the automatically the complete application unit (e.g. coater, Voith speedsizer, etc.) or individual assemblies (e.g. doctor blade holder, deflection unit, Dryer) cleans. In this regard, the main consideration is that the cleaning process is outside of the order period (when the machine is at a standstill) and with an automatic shielding of the environment during the cleaning process connected is. A corresponding shielding arrangement can be used for this be provided.

• – Der zu reinigende Bereich wird mechanisch von der Umgebung abgeschirmt. Beispielsweise können Spritzschutzwände den Reinigungsraum zu Nachbarbaugruppen begrenzen. Eine andere Möglichkeit ist, dass Spritzschutzhauben- oder/und Spritzschutzwände den Reinigungsraum vollständig umschließen.
• – Zweckmäßig kann wenigstens ein Wasservorhang oder dergleichen eingesetzt werden, um den zu reinigenden Bereich von der Umgebung abzuschirmen.
• – Vorzugsweise ist die Reinigungsvorrichtung dafür ausgebildet, den Reinigungsvorgang über die gesamte Maschinenbreite zeitgleich vorzunehmen.
• – Die Reinigung kann erfolgen (alternativ oder gleichzeitig) durch: eine Hochdruckreinigung, eine Reinigung mit Absaugung, eine pneumatische Reinigung (blasend oder/und saugend), eine Dampfreinigung, eine Ultraschall-Reinigung auf Grundlage wenigstens eines Ultraschallschwingers, eine Schockkühlungsreinigung (beispielsweise auf Grundlage von Trockeneis), eine mechanische Reinigung beispielsweise vermittels einer mechanischen Reinigungsvorrichtung mit auswechselbaren Verschleißteilen (etwa Waschschwamm, Mikrofasertuch, abrasive Reinigungselemente etwa Schmirgelpapier oder dergleichen), Bürsten, usw.).
• – Soweit eine Reinigung über die Maschinenbreite vorgesehen ist, kann diese durch mehrere jeweils lokal arbeitende Reinigungsköpfe durchgeführt werden.
• – Die Reinigungsvorrichtung kann vorteilhaft mit einer Sensorik ausgestattet sein, die eine Anpassung der Reinigung an aktuelle Erfordernisse ermöglicht. Beispielsweise kann die Sensorik die Art und den Grad von Verschmutzungen erkennen, dementsprechend die Auswahl geeigneter Reinigungsmaßnahmen und Reinigungsparameter ermöglichen, eine Durchführung der Reinigung in der erforderlichen Intensität ermöglichen und den Erfolg überwachen und dementsprechend den Abschluss der Operation nach Erhalt des gewünschten Reinigungsergebnisses ermöglichen. Ferner kann vorgesehen sein, dass die Sensorik Beschädigungen erkennt und diese etwa an Schaltwarte oder ein Alarmsystem weiterleitet.
• – Für eine sensorische Erfassung von Verschmutzungen bzw. des Reinigungserfolges kann eine elektronische Kamera, beispielsweise eine CCD-Kamera, mit entsprechenden Analysesoftware zum Einsatz kommen. Alternativ oder zusätzlich können auch andere Sensoren verwendet werden, beispielsweise Sensoren zur Erfassung der Verschmutzungsdicke, zur Erfassung einer Verfärbung und Sensoren, die kapazitive oder den elektrischen Widerstand ausnutzende Messverfahren zur Verschmutzungserkennung nutzen.
• – Alternativ oder gleichzeitig einstellbare Parameter können beispielsweise sein: Die Reinigungstemperatur, die Zusammensetzung des Reinigungsmediums bzw. der Reinigungsmedien, die Intensität der Reinigung (z. B. Geschwindigkeit der mechanischen Reinigungsbewegung bzw. Reinigungsbewegungen oder/und Volumenstrom des Reinigungsmediums) und der Druck des Reinigungsmediums.
• – Vorzugsweise ist vorgesehen, dass die Reinigungsvorrichtung automatisch startet, wenn ein Bahnabriss auftritt oder die Maschine aus anderen Gründen (beispielsweise geplant) gestoppt wird.
• – Ist die Reinigungsvorrichtung im Einsatz, so ist ihr Arbeitsbereich vorzugsweise für Personen automatisch gesperrt, beispielsweise durch entsprechende Warnsignale.
• – Man kann vorsehen, dass der Reinigungsvorgang nicht über die gesamte Maschinenbreite zeitgleich vorgenommen wird, sondern durch einen mindestens einmal quer durch die Maschine laufenden Vorgang durchgeführt wird, beispielsweise in der Reihenfolge Triebseite zur Führerseite zurück zur Triebseite.
• – Die Reinigung kann mittels eines Reinigungskopfes oder einer Reinigungseinheit wie oben angesprochen erfolgen.
• – Ist die zu reinigende Oberfläche ein Walzenmantel, so kann die Reinigungsvorrichtung einen Reinigungsring aufweisen, der während des Maschinenbetriebs außerhalb der Walze eine Parkposition einnimmt und in einem Reinigungsmodus mindestens einmal über den Walzenmantel traversiert. Dabei kann die Drehung der Walze als zusätzliche Reinigungsbewegung genutzt werden. Der Reinigungsring kann dafür ausgebildet sein, eine Hochdruckreinigung, eine Reinigung mit Absaugung, eine pneumatische Reinigung, eine Reinigung mit Dampf, eine Reinigung mit Ultraschalleinwirkung, eine Schockkühlungsreinigung und eine mechanische Reinigung alternativ oder in Kombination vorzusehen.
• – Eine andere Möglichkeit ist, die Drehbewegung der Walze mittels eines textilen Reinigungswerkzeugs zu nutzen, das über die Walzenoberfläche gezogen wird. Beispielsweise kann das Reinigungswerkzeug mit einer Reinigungsflüssigkeit versehen werden und sich selbsttätig an den Walzenmantel anschmiegen, und so eine gründliche, aber schonende Reinigung sicherstellen. Die Länge des jeweiligen Reinigungswerkzeugs, etwa in der Art eines Reinigungstuchs, in Laufrichtung, sollte den Umfang der Walze nicht überschreiten, ist aber vorzugsweise länger als der halbe Umfang. Es können zur Unterstützung der Reinigungswirkung abrasive Partikel im Reinigungsmedium bzw. im textilen Reinigungswerkzeug bzw. Reinigungsring enthalten sein, um einen Schmirgeleffekt zu erzielen.
• – Wird zur Reinigung flüssiges Reinigungsmittel verwendet, so kann im Anschluss an die Reinigung eine automatisierte Trocknung erfolgen, beispielsweise mittels wenigstens eines erzwungenen Luftstroms, der durch eine Luftdüsenanordnung bereitstellbar sein kann. Durch die Trocknung wird die Funktionsbereitschaft der Maschine schnell wieder hergestellt.

The cleaning device or the shielding arrangement can alternatively or in combination have the following features:

• - The area to be cleaned is mechanically shielded from the surroundings. For example, splash protection walls can limit the cleaning room to neighboring assemblies. Another possibility is that splash guard hoods and / or splash guard walls completely enclose the cleaning room.
• - At least one water curtain or the like can expediently be used in order to shield the area to be cleaned from the surroundings.
• - The cleaning device is preferably designed to carry out the cleaning process simultaneously over the entire machine width.
• - The cleaning can be carried out (alternatively or simultaneously) by: a high pressure cleaning, a cleaning with suction, a pneumatic cleaning (blowing or / and suction), a steam cleaning, an ultrasonic cleaning based on at least one ultrasonic transducer, a shock cooling cleaning (e.g. based on of dry ice), mechanical cleaning, for example by means of a mechanical cleaning device with exchangeable wear parts (such as a washing sponge, microfiber cloth, abrasive cleaning elements such as sandpaper or the like), brushes, etc.).
• - If cleaning across the machine width is provided, this can be carried out by several locally operating cleaning heads.
• - The cleaning device can advantageously be equipped with a sensor system that enables cleaning to be adapted to current requirements. For example, the sensor system can recognize the type and degree of soiling, accordingly enable the selection of suitable cleaning measures and cleaning parameters, enable the cleaning to be carried out in the required intensity and monitor the success and accordingly the completion of the operation after receipt of the ge enable the desired cleaning result. Furthermore, it can be provided that the sensor system detects damage and forwards it, for example, to a control room or an alarm system.
• - An electronic camera, for example a CCD camera, with appropriate analysis software can be used for sensory detection of soiling or cleaning success. As an alternative or in addition, other sensors can also be used, for example sensors for detecting the contamination thickness, for detecting discoloration and sensors which use capacitive or electrical resistance measurement methods for detecting contamination.
• - Alternatively or simultaneously adjustable parameters can be, for example: the cleaning temperature, the composition of the cleaning medium or the cleaning media, the intensity of the cleaning (e.g. speed of the mechanical cleaning movement or cleaning movements and / or volume flow of the cleaning medium) and the pressure of the cleaning medium ,
• It is preferably provided that the cleaning device starts automatically when a web break occurs or the machine is stopped for other reasons (for example planned).
• - If the cleaning device is in use, its working area is preferably automatically blocked for people, for example by corresponding warning signals.
• - It can be provided that the cleaning process is not carried out simultaneously over the entire width of the machine, but is carried out by a process running at least once across the machine, for example in the sequence drive side to driver side back to the drive side.
• - The cleaning can be carried out using a cleaning head or a cleaning unit as mentioned above.
• - If the surface to be cleaned is a roller jacket, the cleaning device can have a cleaning ring which, during machine operation, assumes a parking position outside the roller and traverses at least once in a cleaning mode over the roller jacket. The rotation of the roller can be used as an additional cleaning movement. The cleaning ring can be designed to provide high-pressure cleaning, cleaning with suction, pneumatic cleaning, cleaning with steam, cleaning with ultrasound, shock cooling cleaning and mechanical cleaning alternatively or in combination.
• - Another possibility is to use the rotary movement of the roller by means of a textile cleaning tool that is pulled over the roller surface. For example, the cleaning tool can be provided with a cleaning liquid and nestle against the roller shell automatically, thus ensuring thorough but gentle cleaning. The length of the respective cleaning tool, for example in the manner of a cleaning cloth, in the running direction should not exceed the circumference of the roller, but is preferably longer than half the circumference. To support the cleaning action, abrasive particles can be contained in the cleaning medium or in the textile cleaning tool or cleaning ring in order to achieve an emery effect.
• If liquid cleaning agent is used for cleaning, then automated drying can take place after the cleaning, for example by means of at least one forced air flow, which can be provided by an air nozzle arrangement. Drying quickly restores the machine's functionality.

• – Die Reinigungsvorrichtung ermöglicht eine effektive Bekämpfung von Verschmutzungen, insbesondere auch im Hinblick auf die oben angesprochenen Aufgaben bzw. Teilaufgaben.
• – Dabei wird die Zeit, die der Maschinenstillstand andauert, wesentlich reduziert, wodurch der Laufzeitwirkungsgrad deutlich angehoben wird.
• – Die Reinigung mittels der Reinigungsvorrichtung kann deutlich gründlicher als eine konventionelle, manuelle Reinigung sein, wodurch die Sicherheit gegen Störungen überdies zunimmt. Es können unbeabsichtigte Bahnabrisse somit stark reduziert und notwendige Maschinenstopps hinausgezögert werden, wodurch der Laufzeitwirkungsgrad wesentlich gesteigert wird.
• – Nach einer sehr gründlichen Reinigung auf die angesprochene Weise ist überdies die Anfahrphase kürzer und die Zahl von Fehlanläufen ist reduziert.
• – Durch die automatisierte Reinigung kann eine hervorragende Sicherheit für Personen und eine hervorragende Sicherheit für die Maschine erreicht werden.

The advantages include the following:

• - The cleaning device enables effective control of dirt, especially with regard to the above-mentioned tasks or sub-tasks.
• - The time that the machine is at a standstill is significantly reduced, which significantly increases the runtime efficiency.
• - The cleaning using the cleaning device can be much more thorough than a conventional, manual cleaning, which also increases the security against malfunctions. Unintentional web breaks can thus be greatly reduced and necessary machine stops can be delayed, which significantly increases runtime efficiency.
• - After a very thorough cleaning in the manner mentioned, the start-up phase is also shorter and the number of false starts is reduced.
• - The automated cleaning can achieve excellent safety for people and excellent safety for the machine.

The invention is explained below of exemplary embodiments shown in the figures.

1 shows an example of an application device with a free jet application, as such, for example, from the DE 198 01 140 A1 known, to which - as well as to other types of application devices - apply the invention proposals are cash.

2 schematically shows in part 2a) an essentially the application device of FIG 1 Corresponding application device in operation and in part 2b) in a cleaning operating state for a conventional manual cleaning.

3 illustrates an automated machine cleaning of the free jet applicator as an example of an embodiment of the invention.

4 FIG. 4 a) shows a doctor device for leveling and metering with a doctor blade in operation and in FIG. 4 b) in a cleaning operating state in which automated machine cleaning takes place, as an example of an embodiment of the invention.

5 shows on the basis of the application device of 2a ) An example of a permanent or intermittent cleaning of a counter roller to the free jet applicator and to the doctor blade device in coating operation.

6 shows an example of a cleaning unit according to the invention for cleaning surfaces of a paper machine or coating machine together with the associated control unit.

7 illustrates an advantageous way of cleaning rollers of a paper machine or a coating machine.

8th shows a further advantageous possibility for cleaning rollers of a paper machine or coating machine.

9 is used to illustrate a complete mechanical cleaning of an application and doctor blade arrangement of a coating machine with shielding from neighboring assemblies.

The proposals for the invention can be applied to a wide variety of paper machines and application devices (coating machines) and are intended here - without restriction of generality - on the basis of an application device with a free-jet application unit, as per itself, for example, from the DE 198 01 140 A1 known to be explained.

The application device of the 1 has a general 10 designated free jet commissioned work. This gives a liquid or pasty medium 15 (see. 2a ), such as a coating color or a glue, in the free jet from an outlet opening 12 directly to a material web 14 from. The beam is at 16 indicated. It essentially extends across the entire width of the material web 14 across their direction (with 18 referred to) continuously by. The material web preferably made of paper, cardboard or cardboard 14 is in the area of the commissioned work 10 via a counter roller 20 guided. It is fed from a roll of material, not shown, from which it is unwound, or from an upstream production station in which it is produced, the material web 14 before or / and after the commissioned work 10 if desired, at least one further application station can pass through in the at least one further uniform layer of a medium to be applied onto the material web 14 is applied. After the web of material 14 in the area of the commissioned work 10 through that of the beam 16 formed veil of the medium to be applied and has been charged with the medium are in a downstream doctor blade area 22 excess portions of the medium 15 (see. 2a ) from the material web 14 doctored. For this purpose, in the exemplary embodiment shown, there is one on a doctor bar 24 held doctor blade 26 provided that at a suitable blade angle and with a suitable contact pressure on the passing material web 14 is applied. The contact pressure of the doctor blade 26 can by means of one or more actuators 28 (here a set screw) can be varied. In the squeegee area 22 This is followed by fine metering of the medium previously applied in excess and only roughly pre-metered to the desired line width.

After passing through the squeegee area 23 becomes the coated web of material 14 guided over guide deflection rollers, not shown, into a drying area, not shown, in which the layer of the medium to be applied is dried, for example by means of infrared drying. If required, the coated material web is then fed to further processing stations.

The commissioned work 10 comprises an elongated support body 34 that in a housing 36 is housed. On the support body 34 is a color distribution pipe 38 held into which the application medium is pumped from one side. The color distribution pipe 38 points along its cross to the direction of travel 18 the material web 14 measured length a variety of color passage openings 40 through which the application medium from the paint distribution tube 38 in an antechamber 42 arrives. Due to the pressure drop along the paint distribution tube 28 the medium to be applied with such pressure into the paint distribution tube 38 pumped that at the opposite end of the paint pipe 38 a residual amount of the application medium flows away unused. This ensures that there is a constant replenishment of fresh application medium at this end and that there is always fresh application medium with sufficient pressure in the prechamber through the color passage openings there 42 nachströmt.

From the antechamber 42 the order medium ends up in a general 44 designated jet nozzle, which the jet outlet opening 12 having. The jet nozzle 44 is from a nozzle front wall 46 and from a nozzle rear wall 48 limited. The nozzle rear wall 48 points in the area of the beam outlet opening 12 a curved nozzle lip 50 on which is the redirection of the jet nozzle 44 emerging beam 16 at a suitable angle to the material web 14 causes. Using one or more actuators 42 can the width of the jet nozzle 44 be adjusted, in particular the distance between the die lip 50 and the tip of the nozzle front wall 46 , As a result, the beam cross section and thus the amount of the emitted medium can be adjusted in the desired manner. Are expedient across the width of the material web 14 distributes several actuators 52 provided so that the width of the jet nozzle 44 can be set locally differently.

The nozzle front wall 46 is on a lever arm 58 attached, which is pivotable about an axis A to a bearing approach 60 of the housing 36 is stored. The bearing approach 60 has a stop nose 62 on what a stop tab 64 the nozzle front wall 46 opposite. The one in the 1 operating state shown is the lever arm 58 pivoted into its operating position, in which the nozzle front wall 46 with their stop projection 64 on the stop nose 62 of the bearing approach 60 is applied. Through the stop nose 62 becomes a defined opening width of the jet nozzle 44 set by the actuation of the actuators 42 can be finely adjusted.

On the front wall of the nozzle 46 far end of the lever arm 58 grabs a piston rod 66 a piston-cylinder unit 68 articulated to whose cylinder 70 by means of a mounting flange 72 on the housing 36 is held. The piston-cylinder unit 68 is via a pressure line to a pressure medium supply 54 connected. Another pressure line runs from the pressure medium supply to a pressure hose 78 which is between the lever arm 48 and the housing 36 is arranged.

By actuating the piston-cylinder unit 68 in the sense that its piston rod 66 in the cylinder 70 the nozzle front wall can be retracted 46 from the back wall of the nozzle 58 can be folded away in a non-operating position in which the jet nozzle 44 is accessible for cleaning or maintenance work. Around the nozzle front wall 46 to close again, the pressure hose 78 pressurized so that the nozzle front wall 46 folds back into its operating position about the axis A.

In order to facilitate the conventional manual cleaning or maintenance work, the entire free jet application unit can also be pivoted, with reference to the illustration in FIG 1 counterclockwise, as can be seen from a comparison of the sub-figures 2a) and 2b).

The generally with 21 designated doctor device has a on a doctor bar 24 attached drain plate 80 on the one on the nozzle front wall 46 held return gutter 82 interacts. The drain plate 80 and the gutter 82 catch in the squeegee area 22 scraped off, excess medium and forward it to a processing station, not shown, for the application medium.

For more details on the arrangement of the 1 will depend on the content of the DE 198 01 140 A1 referenced, the disclosure content of which is fully incorporated into the disclosure of the present application.

In the area of the commissioned work 10 and the doctor device 21 as well as on and in the application work or on and in the doctor device, soiling can occur which can adversely affect the coating quality or finishing quality and thus the end product and can even lead to operational malfunctions up to the web break, which significantly deteriorate the runtime efficiency and thus the costs can increase significantly. For example, in the beam outlet opening 12 and in an immediately preceding one, to the antechamber 42 subsequent color feed channel 84 Fix dirt particles and other solids, so that in the area of these contaminants from the jet nozzle 54 emerging beam 16 is more or less interrupted and the material web 14 is not or not sufficiently coated. If this source of error persists for a while, it becomes noticeable in the line image of the applied layer by stripes, which are occasionally even visible to the naked eye or - if provided - by a special measurement sensor system.

The DE 198 01 140 A1 strikes specifically on the material web to correct the faulty stripes 14 applied layer 15 (see. 2a ) before, the jet nozzle 44 to open briefly, ie the jet outlet opening 12 to enlarge briefly. By enlarging the beam outlet opening 12 is the disturbance causing the stripes from the jet nozzle 44 be rinsed out, so that when the original operating state is subsequently restored, a perfect stroke result is ideally achieved again. Otherwise it works DE 198 01 140 A1 Assume that the operating personnel are automatically given warning signals, for example by means of a warning lamp or a signal sounder, so that the operating personnel themselves can initiate suitable measures for troubleshooting. This will be the case if the short-term enlargement of the jet outlet opening 12 no improvement of the coating result is achieved, the operating personnel have to initiate cleaning measures on the free jet applicator, in particular cleaning of the jet outlet opening 12 and the ink supply channel 84 , if dirt particles or other solid particles cannot be rinsed out by briefly enlarging the jet outlet opening. Such cleaning is conventionally done manually, as in 2 B ) is shown schematically. The nozzle front wall 46 is according to 2 B ) from the nozzle rear wall 48 folded away so that the jet nozzle 44 and the ink supply channel 48 (see. 1 ) for manual cleaning instruments and / or pressurizing a medium by means of a manually operated nozzle head or the like are common.

Also regarding the squeegee device 21 there are cleaning tasks that are traditionally done manually. It is useful to take advantage of every machine stop for this, the straight doctor blade 26 ( 1 ) or curved doctor blade 26a ( 4a ) or in general to replace the squeegee element (at least as far as it wears out).

The doctor blade is, for example, on the in 4a ) shown way on the doctor bar 24a held, namely between two clamping members 100a and 102 pinched, the pneumatically relative to each other and relative to the squeegee 24a are positionable. 104a and 106a denote this relative adjustment of the clamping members serving pneumatic pressure hoses.

The clamping members, which can also be referred to as clamping bars, can be positioned in three positions in particular: doctor blade clamped, bell change and cleaning of the blade holder. 4b ) shows the clamping members in the relative position "cleaning the blade holder".

Traditionally, the blade holder is cleaned manually, for which purpose the doctor bar together with the drain plate 80 from the counter roller 20 and the commissioned work 10 is pivotable, referring to the representation of the 1 clockwise (cf. 2 B ). The squeegee holder and especially the space between the clamping members receiving the squeegee blade 100a and 102 (see. 4b ) remains very difficult to access, so that the cleaning quality and in particular fluctuating cleaning results are not sufficient.

In contrast, according to one aspect The invention proposed, among other things, an automated machine Cleaning relevant components of a machine for manufacturing or / and finishing of a material web, in particular of paper or cardboard, especially a single-sided coater or double-sided application of liquid or pasty application medium on the running material web with the mediation of at least one Order, to be provided and the machine concerned accordingly equipment.

3 shows a corresponding embodiment, of the free jet order of the 2 goes out and a cleaning arrangement assigned to the order work 100 ,

According to 3 is on the vertical leg 120 the stool 122 in the area between the counter roller 20 and the commissioned work 10 a transverse guideway 124 arranged to guide a holding base 126 serves on the two multi-articulated functional arms 128 and 130 are arranged movably, each a cleaning head 132 respectively. 134 have at their free end. According to the example, the two cleaning heads are each designed as a high-pressure cleaning head and are used to apply pressure and pressure to areas and areas to be cleaned with a cleaning liquid, for example water or water, with an active ingredient. Alternatively, the cleaning heads could also be designed, for example, as steam cleaning heads for applying steam to the areas to be cleaned or as mechanical cleaning heads for cleaning areas or areas to be cleaned mechanically, for example by means of brushes and the like, to give only a few examples. It is quite possible that multifunctional cleaning heads can be used, which can carry out different cleaning processes.

According to the example of 3 is the cleaning head 134 at the free end of the function arm 130 especially for cleaning the jet outlet opening 12 and the ink supply channel 84 between the nozzle front wall 46 and the back wall of the nozzle 48 provided (cf. 1 ), as in 3 illustrated by the cleaning head 134 between the nozzle front wall 46 and the nozzle back wall 48 intervenes. The functional arm 130 can be adjusted in any spatial direction by a corresponding drive and can be moved in the cross machine direction by a drive assigned to the guide track or the holding base, so that the space between the front wall of the nozzle 46 and the back wall of the nozzle 48 across the entire machine width and across the entire extension of the nozzle front wall 46 and nozzle rear wall 48 is intensively cleanable.

The cleaning head serves in a similar manner 132 on the functional arm 128 for cleaning the return channel 82 , This is the function arm 128 regardless of the function arm 130 adjustable in any spatial direction by means of an assigned drive and together with the function arm 130 mediating the holding base 126 Can be moved in the transverse direction. Further guideways with at least one holding base and in each case at least one functional arm or also other types of cleaning arrangements, for example cleaning nozzles arranged in a stationary manner, can be provided around other areas and surface sections of the application unit 10 to clean. So far by means of the functional arm 128 and 130 accessible, these can also be used with their respective cleaning heads for cleaning further areas and surface sections of the application unit.

In order to protect neighboring assemblies from being inadvertently exposed to cleaning medium, a shielding arrangement can be provided 3 dashed lines a shielding wall which can be deployed by means of a drive 140 is indicated, which consists of three wall sections 142 . 144 and 146 is formed over swivel joints 148 and 150 connected or at the chair 122 are pivotally hinged.

Regarding the functional arms 128 and 130 is to be added that the functional arm 128 of a plurality of arm links 152 and the functional arm 130 of a plurality of arm links 154 is formed, which are connected to one another via swivel joints or on the holding base 126 are pivotally hinged. Telescopic arm links can also be provided.

A mechanical cleaning of the doctor device can also be carried out in a corresponding manner 21 or relevant position and areas thereof. 4b ) shows a corresponding example with one of the doctor devices 21 associated cleaning arrangement 100a , To 4b ) is, for example, a guide track running in the transverse direction of the machine on a crossbar or on a crosswalk 160a provided to guide a holding base 162a serves on a multi-articulated arm 164a is pivotally articulated from arm members pivotable against each other, the one cleaning head 166a has, for example, in turn for high pressure cleaning or steam cleaning to be cleaned areas and areas. The functional arm 164a and the cleaning head 166a are in particular (but not exclusively) intended for the intermediate area between the clamping members receiving the doctor blade 100a and 102 to clean. This is the cleaning head 166a by means of the function arm 164a adjustable in any spatial direction and by means of the holding base 162a and the track 160a Can be moved in the transverse direction of the machine. A shielding arrangement can be provided for shielding adjacent assemblies or components, which, for example, has at least one wall that can be mechanically brought into position 170a or / and at least one device 172a for generating at least one screening curtain from supplied screening medium, for example water. For example, a water pipe 172a with slot nozzle or a series of outlet openings to create the water curtain 174a be provided.

The cleaning arrangements of the 3 and 4 are primarily or exclusively intended to clean the application device outside of normal operation. According to another aspect of the invention, it is proposed to provide a cleaning arrangement which permanently, intermittently or as required cleans at least one assigned component or at least one assigned area in the operation of the machine in question. 5 shows a corresponding embodiment, which in turn by the application device of 2 emanates.

According to 5 is one of the counter rollers 20 assigned cleaning arrangement 100 ' with a nozzle arrangement 180 provided in the transverse direction of the machine, that is, along the axis of rotation of the counter roll 20 , is movable or parallel to the axis of rotation over the entire length of the counter roller 20 extends. By means of the nozzle arrangement 180 is the circumference of the counter roller 20 can be acted upon with a cleaning medium, for example a cleaning liquid or a cleaning mist, namely during normal operation of the application device with the counter roller rotating 20 , The cleaning liquid can be, for example, water or water with at least one cleaning additive. The cleaning medium applied to the circumference prevents impurities, for example application medium, from drying or dissolves impurities, for example application medium, at least to such an extent that the impurities, together with the cleaning medium, are spread by a spreader roller 182 the counter roller 20 fed material web, which is in intimate contact with the peripheral surface of the counter roll 20 occurs, are recorded and removed. Since the build-up of contaminants is counteracted by means of the cleaning which takes place during operation, small amounts of cleaning medium are sufficient and there are only very small amounts of contaminants by means of the material web 14 dissipate so that the quality of the material web or the quality of the order or coating result is not adversely affected.

It should be noted that too other rollers, for example guide rollers and intermediate rolls, a corresponding machine in the manner described and way are cleanable in operation, regardless of whether the rollers in Direct contact with the material web or stand or not.

6 shows an example of a cleaning unit that can be used for a variety of cleaning tasks within or on a paper machine or coating machine 206b a cleaning arrangement 100b , which is specially designed to subject surfaces to intensive cleaning. The cleaning unit has a multi-articulated arm 200b on a holding base 202b articulated along a guideway 204b is movable by an electric motor. By moving the holding base 202b along the guideway, for example, running in the transverse direction of the machine 204b is the cleaning unit over a further area in the left-right direction as shown in FIG 6 over a surface to be cleaned 208b traversable. By means of the electric motor-adjustable function arm 200b is the cleaning unit 206b furthermore, for example, in the direction perpendicular to the plane of the drawing 6 along the surface 208b traversable.

It should be noted that the functional arm 200b just like the functional arms 128 . 130 and 164a are only shown schematically or symbolically in the figures. Suitable structural means are available to the person skilled in the art in order to implement specific functional arms which meet the requirements described are enough.

Concerning the cleaning unit 206b the 6 It should be noted in particular that this can also be moved in other ways over surfaces to be cleaned, for example by means of a portal which can be moved along two parallel guide rails for adjustment in a first direction and by moving the cleaning unit along a portal leg which runs transversely to the guide rails for adjusting the cleaning unit in a second direction substantially orthogonal to the first direction. It is also possible to provide autonomous or quasi-autonomous cleaning units which have an integrated drive and are at most firmly connected to the machine in question by control lines, media supply lines and media discharge lines or suction lines.

The cleaning unit of the 6 is via an electrical line arrangement comprising at least one control line 210b on the holding base 202b connected and by means of further electrical connections to an assigned control unit 212b connected. The cleaning unit is the cleaning liquid 206b for example water via a supply line (possibly supply hose) 214b fed. The cleaning liquid becomes the cleaning unit 206b preferably supplied under pressure and serves on the one hand to drive a rotor element 216b and on the other hand to act on the surface 208b by means of a with the rotor element 216b rotating nozzle arrangement. 218b designated by the nozzle arrangement on the surface 208b directed liquid jets or the nozzle arrangement producing them. The rotor element 216b is also with a brush assembly rotating with the rotor element 220b executed mechanically on the surface 208b works and promotes the detachment of hardened dirt. Via a suction line (suction hose if necessary) 222b becomes that of the surface 208b The cleaning liquid supplied, together with any loosened or loosened dirt, is suctioned off again. 224b denotes a sealing arrangement of the cleaning unit 206b that with the surface 208b is in sealing engagement and prevents cleaning fluid from coming out of the seal assembly 224b limited working space between the surface 208b and the cleaning unit 206b emerges to the outside. Suction nozzles for sucking off the cleaning liquid together with any impurities are included 226b referred to and can also be at a closer distance to the surface 208b as shown in the figure. Optical sensors for detecting dirt on the surface 208b are with 228b designated. The control unit 205b receives sensor output signals from the sensors 228b and controls the cleaning process based on the sensor output signals. The sensors 228b stand over electrical connection lines of the line arrangement 210b with the control unit 212b in connection.

The cleaning unit 206b can be used both for cleaning while the machine in question is in operation (paper machine or coating machine) or outside the operation of this machine, with different cleaning intensities possibly being used, namely a lower cleaning intensity for cleaning during operation.

Special cleaning instruments or cleaning units can be used to clean rollers of various functions of a paper machine or coating machine outside the operation of the machine. 7 shows schematically a corresponding example of a corresponding cleaning arrangement 100c , A roller 230c is an annular cleaning instrument 232c assigned, which is designed for example as an annular brush. Corresponding brush bristles are in 7 With 234c designated. The lines referred to here as brush bristles between the outer circumference of the roller 230c and the inner circumference of the ring 232c can also be used for another cleaning interaction between the unit 232c and the peripheral surface of the roller.

The cleaning tool 232c is over a holding arm 234c on a holding base 236c arranged, the electric motor along one parallel to the axis of rotation of the roller 230c trending guideway 238c is movable. The cleaning instrument is in operation of the machine 232c move to a parking position in the axial direction of the roller 230c is offset from this and is located, for example, on the drive side of the machine. For cleaning the roller 230c outside the operation of the machine is the cleaning instrument 232c over the cleaning roller 230c move so that the outer circumference of the roller 230c is arranged within the ring and its cleaning action is exposed, for example such that the brush bristles 234c are in contact with the peripheral surface. Preferably the roller 230c rotated for cleaning in order to achieve a particularly effective cleaning interaction. In addition to the rotational movement of the roller 230c becomes the holding base 236c together with the ring-shaped cleaning instrument 222c move in the axial direction of the roller so that the roller along its circumference along its entire axial extent through the cleaning instrument 232c is cleaned. The cleaning effect can be supported by supplying a cleaning medium or by supplying cleaning particles. 240c denotes a corresponding supply arrangement, for example a nozzle arrangement for supplying a cleaning liquid.

8th serves to illustrate another expedient possibility for cleaning a roller outside the operation of the concerned Machine using a cleaning arrangement 100d , With the roller 230d or their outer circumference becomes a flat, possibly cloth-like textile or fleece-like cleaning structure 232d engaged. By the rotation of the roller 230d there is an intensive cleaning effect of the structure 232d on the outer circumference of the roller 230d , The structure 232d is over a holding arm 234d on a holding base 236d held along one parallel to the axis of rotation of the roller 230d trending guideway 238d is movable to the structure 232d in the axial direction along the axial extent of the roller 230d to move over the outer circumference of the roller or in an axially opposite the roller 230d to move the offset parking position. This can be done using the outer circumference of the roller 230d to a certain extent extending stationary holding plate or the like for holding the structure 232d be provided, especially on the drive side of the machine.

From the above explanations it already follows that both the annular cleaning element 232c as well as the cleaning structure 232c in the axial direction of the roller in question are shorter than the extent of the roller, so that in order to clean the roller surface over its entire axial extent, the relevant holding base together with the associated cleaning instrument must be moved in the axial direction.

Also in the case of the example of 8th can be provided for an automated supply of cleaning medium or cleaning particles. A nozzle arrangement is indicated 240d for supplying a cleaning liquid, for example water or water with a cleaning additive. The nozzle arrangements 240c and 240d can extend over the entire roller or can be moved in the axial direction of the roller in order to cover the entire axial extent of the roller. During the operation of the machine, the nozzle arrangements can 240c and 240d for constant or intermittent cleaning according to the nozzle arrangement 180 the 5 be used.

In 9 Another example of an application device or coating machine is shown schematically. The material web, in particular made of paper or cardboard (including cardboard) becomes the counter roller 20e via a guide roller 19e fed. The counter roll is at least one application 10e and at least one coating device 21e assigned, which are only indicated schematically. It can be a web marking device 17e be provided.

There is a cleaning arrangement for cleaning outside the operation of the coating machine 100e provided the multiple nozzle arrangements 250e . 252e . 254e and 256e includes. The nozzle arrangement 250e can be done in the same way as the nozzle assembly 180 the 5 for cleaning, especially maintenance cleaning, the roller 260e serve in operation.

In a cleaning operating state of the machine, the various components of the application arrangement, in particular the application unit, can 10e who have favourited prank arrangement 21e and the counter roller 20e are intensively cleaned with the supply of cleaning medium, in particular cleaning liquid or cleaning steam, by means of the nozzle arrangements mentioned. At least the nozzle arrangements 252e . 254e and 256e can be swiveled and / or moved for this purpose in order to be able to clean different areas or components, as shown in 9 is symbolically indicated.

260e denotes a shielding arrangement that prevents neighboring components or assemblies of the machine from being exposed to cleaning medium. The shielding arrangement 260e can comprise a stationary shielding wall arrangement, as well as one or more shielding walls that can be adjusted into a shielding position for cleaning, and / or at least one shielding curtain produced by supplying a shielding medium, for example water.

Claims (65)

Machine for the production and / or finishing of a material web, in particular made of paper or cardboard, optionally a coating machine for one-sided or double-sided application of liquid or pasty application medium to the running material web by means of at least one application unit, characterized by at least one cleaning arrangement associated with the machine ( 100 ; 100a ; 100 '; 100b ; 100c ; 100d ; 100e ), which is arranged and designed for this, with the machine running in the normal manufacturing or refinement operating state of the machine and / or with the machine at a standstill outside the normal manufacturing or. Refinement operating state in an exceptional or cleaning operating state permanently or intermittently to subject at least one assigned component or assembly to automated cleaning treatment, at least in some areas. Machine according to claim 1, characterized in that at least one area of the machine that is in operation or / and when starting the machine and / or when shutting down the machine or / and in at least one exceptional operating state of the machine of manufacture serving medium and / or finishing medium, if necessary Application medium, is or could be exposed and / or the risk of is subject to other soiling by means of the cleaning arrangement can be cleaned automatically. Machine according to claim 1 or 2, characterized in that the cleaning arrangement we at least one commissioned work ( 10 ) or / and a leveling or metering device assigned to it, possibly doctor blade device ( 21 ), or / and a surrounding area of the application unit or the leveling or dosing device. Machine according to one of claims 1 to 3, characterized by at least one shield arrangement associated with the machine ( 140 ; 170a . 172a . 174a ; 260e ), by means of which the component or assembly to be subjected to the automated cleaning treatment at least in certain areas can be automatically shielded from an environment, in particular at least one neighboring component or neighboring assembly. Machine for the production and / or finishing of a material web, in particular made of paper or cardboard, possibly a coating machine for one-sided or double-sided application of liquid or pasty application medium to the running material web with the mediation of at least one application unit, characterized by at least one shield arrangement associated with the machine 140 ; 170a . 172a . 174a ; 260e ), through which at least one component or assembly to be subjected to a preferably automated cleaning treatment can be automatically shielded from an environment, in particular at least one neighboring component or neighboring assembly, at least in regions. Machine according to claim 4 or 5, characterized in that the shielding arrangement ( 140 ; 170a . 172a . 174a ; 260e ) at least one commissioned work ( 10 ; 10e ) or / and a leveling or metering device assigned to it, possibly doctor blade device ( 21a ; 21e ), or / and a surrounding area of the application unit or the leveling or dosing device. Machine according to one of claims 4 to 6, characterized in that the shielding arrangement has at least one shielding wall which can be automatically adjusted between a standby position and a shielding position ( 140 ; 170a ) and / or shielding hood. Machine according to one of claims 4 to 7, characterized in that the shielding arrangement comprises an arrangement ( 172a ) to generate at least one screening curtain ( 174a ) based on supplied shielding medium, possibly water. Machine according to claim 8, characterized in that the shielding medium also serves as a cleaning medium. Machine according to one of Claims 1 to 9, characterized in that at least one component or assembly (which acts directly or indirectly on the running material web or contributes to its formation ( 10 ; 20 ; 21 ; 230c ; 230d ; 20e ; 10e ; 21c ), which extends at least over the entire width of the material web, can be subjected to the cleaning treatment.  Machine according to claim 10, characterized in that a / the cleaning arrangement at the same time at least one The area of the component or assembly has a cleaning effect, that of the material web width or maximum web width. Machine according to claim 10, characterized in that a / the cleaning arrangement has a cleaning section, which is adjustable in the direction of the width of the material web, possibly movable, to consecutively different sections of a Area of the component or assembly to have a cleaning effect, at least corresponds to the web width or maximum web width. Machine according to one of claims 10 to 12, characterized in that at least one material web treatment roller and / or at least one material web guide roller and / and at least one application medium transfer roller and / or a counter roller ( 20 ; 20e ) can be subjected to the automated cleaning treatment. Machine according to claim 13, characterized in that a / the cleaning arrangement comprises a cleaning medium application arrangement via which the (respective) roller ( 20 ; 20e ; 230c ; 230d ) a cleaning medium, preferably a cleaning liquid and / or a cleaning mist, can be applied to at least some of its circumference, preferably with the roller rotating. Machine according to claim 14, characterized in that as a cleaning liquid Water or water with at least one cleaning additive feedable to the roller is. Machine according to claim 14 or 15, characterized in that atomized as a cleaning mist Water or atomized Water with at least one cleaning additive or water vapor Scope of the roller can be fed is. Machine according to one of claims 14 to 16, characterized in that that the cleaning medium handling the roller as a pressure cleaning medium under opposite Ambient pressure increased Pressure can be supplied is. Machine according to one of claims 14 to 17, characterized in that the cleaning medium application arrangement comprises a supply nozzle arrangement ( 180 ; 240c ; 240d ; 250e ) for supplying the cleaning medium to the circumference of the roller. Machine according to one of claims 14 to 18, characterized in that that the cleaning arrangement has a cleaning medium discharge arrangement, by means of the cleaning medium including the circumference of the roller Soiling and / or soiling detached or loosened by the cleaning medium dischargeable are, preferably with a rotating roller. Machine according to one of claims 14 to 18, characterized in that the roller ( 20 ; 20e ; 230c ; 230d ) can be acted upon by the cleaning medium in the normal manufacturing or refinement operating state of the machine, and removal of the cleaning medium together with any dirt or / and dirt detached or detached by the cleaning medium from the circumference by means of the running material web and / or by means of at least one active connection is provided to the running material web intermediate roller. Machine according to one of claims 13 to 20, characterized in that a / the cleaning arrangement at least one at least one roller ( 230c ; 230d ) assigned cleaning tool ( 232c ; 232d ), which is in cleaning interaction, possibly cleaning contact, with the circumference of the roller or can be brought into cleaning interaction, possibly cleaning contact, automatically with the circumference of the roller. Machine according to claim 21, characterized in that the cleaning tool has a cleaning effect of the cleaning contact effective or supportive Cleaning medium can be supplied is. Machine according to claim 22, characterized in that a cleaning liquid or / and a cleaning paste or / and as a cleaning medium an abrasive cleaning effect unfolding cleaning particles Cleaning tool can be fed is / are. Machine according to one of claims 21 to 23, characterized in that a cleaning ring enclosing the circumference of the roller ( 232c ) is provided along the circumference of the roller ( 230c ) in the direction of whose axis is adjustable by means of an assigned drive, preferably with the roller rotating. Machine according to claim 24, characterized in that the cleaning ring into an opposite of the roller or a working section the roller axially offset parking position is adjustable. Machine according to claim 24 or 25, characterized in that the cleaning ring ( 232c ) is designed as a brush ring or as a textile or fleece-like ring. Machine according to one of claims 21 to 23, characterized in that as a cleaning tool with the circumference of the preferably rotating roller ( 230d ) flexible cleaning structure that can be brought into cleaning contact over a circumferential angle and at least part of its width ( 232d ) is provided. Machine according to claim 27, characterized in that the circumferential angle is less than 360 degrees, but preferably greater than Is 180 degrees. Machine according to claim 27 or 28, characterized in that the cleaning structure ( 232d ) along the circumference of the roller ( 230d ) in the direction of whose axis is adjustable by means of an assigned drive, preferably with the roller rotating. Machine according to one of claims 27 to 29, characterized in that the cleaning structure ( 232d ) is designed as a textile or fleece-like structure. Machine according to one of claims 1 to 30, characterized in that that in the event of an exposure to cleaning fluid Providing cleaning device at least one of the cleaning liquid exposed area of the machine, especially the component or Assembly, a drying device at least supporting the drying of the area assigned. Machine according to claim 31, characterized in that the drying device is designed for this, at least to generate an air flow acting on the area. Machine according to one of claims 1 to 32, characterized in that the cleaning arrangement ( 100 ; 100a ; 100b ) at least one cleaning unit which can be moved to at least one point to be cleaned or at least one area to be cleaned and / or between points or areas to be cleaned and / and along at least one point to be cleaned or at least one area to be cleaned ( 132 ; 134 ; 166a ; 206b ) having. Machine according to claim 33, characterized in that the cleaning unit ( 132 ; 134 ; 166a ; 206b ) by means of a drive relative to a holding base ( 126 ; 162a ; 202b ) is adjustable and / or that the cleaning unit or the holding base ( 126 ; 162a . 202b ) by means of a drive along a guideway ( 124 ; 160a ; 204b ) is adjustable. Machine according to claim 34, characterized in that a crosswalk or a crossbar of the machine the guideway having. Machine according to claim 34 or 35, characterized in that that the track a parking position preferably provided on the drive side of the machine for the Has cleaning unit or the holding base. Machine according to one of claims 34 to 36, characterized in that the cleaning unit via a multi-articulated, by means of the drive adjustable function arm ( 128 ; 130 ; 164a ; 200b ) with the holding base ( 126 ; 162a ; 202b ) connected is. Machine according to one of claims 33 to 37, characterized in that the cleaning unit ( 166a ) is designed for at least one area of a leveling or dosing device, possibly a doctor blade device ( 21a ), cleaned automatically. Machine according to claim 38, characterized in that the cleaning unit or at least one cleaning section thereof in at least one receiving or holding area ( 100a . 102 ) the leveling or metering device for a leveling or metering element, possibly a doctor rod or doctor blade ( 26a ), can be introduced. Machine according to one of claims 34 to 39, characterized in that the cleaning arrangement via a control unit ( 212b ) with regard to adjustment movements of the cleaning unit ( 206b ) or the holding base ( 202b ) or the function arm ( 200b ) can be controlled, preferably on the basis of a predefined or predefinable cleaning program. Machine according to claim 40, characterized in that the cleaning program is in a programming mode can be specified based on granted or instructed adjustment movements is. Machine according to claim 40 or 41, characterized in that the cleaning arrangement ( 100b ) a sensor arrangement ( 228b ) that detects current situations and / or operating states or / and soiling or degrees of soiling and / or cleaning treatment states, and that the control unit ( 212b ) is designed to control the cleaning arrangement on the basis of detection results of the sensor arrangement. Machine according to claim 42, characterized in that the control unit ( 212b ) is designed for the cleaning arrangement ( 100b ) based on detection results of the sensor arrangement ( 228b ) to be controlled with regard to adjustment movements of the cleaning unit ( 206b ) or the holding base ( 202b ) or the function arm ( 200b ) or / and with regard to the inclusion or termination or / and the type or / and intensity or / and other parameters of the cleaning treatment. Machine according to claim 42 or 43, characterized in that the cleaning unit ( 206b ) even with at least one sensor ( 228b ) Is provided. Machine according to one of claims 42 to 44, characterized in that that at least one sensor, in particular a sensor of the cleaning unit, an optical sensor or an electronic camera, possibly a CCD camera, is. Machine according to one of claims 42 to 45, characterized in that that at least one sensor, in particular a sensor of the cleaning unit, a touching working sensor, possibly a surface texture or surface structure responsive sensor, is. Machine according to one of claims 42 to 46, characterized in that that at least one sensor, in particular a sensor of the cleaning unit, an at least one electrical quantity, possibly an electrical one Resistance or a capacitance or a related other electrical quantity, more grasping Sensor. Machine according to one of claims 1 to 47, characterized in that the cleaning arrangement ( 100b ) in the first cleaning operating mode with lower cleaning intensity and in a second cleaning operating mode with higher cleaning intensity, the first cleaning operating mode preferably corresponding to the normal manufacturing or finishing operation of the machine and the second cleaning operating mode preferably corresponding to the exceptional or cleaning operating state of the machine. Machine according to one of claims 1 to 48, characterized in that the cleaning arrangement ( 100b ) can be put into a maintenance or precautionary cleaning operating mode in which a prophylactic cleaning of low cleaning intensity is carried out, regardless of whether Soiling is present. Machine according to claim 48 or 49, as well as according to claim 33, characterized in that the first and the second cleaning operating mode or the maintenance or precautionary cleaning operating mode Obtain operating modes of the cleaning unit. Machine according to one of claims 1 to 50, in any case according to claim 44, characterized in that the cleaning arrangement ( 100b ) regarding the cleaning unit ( 206b ) can be placed in a monitoring mode of operation in which the cleaning unit to at least one location that is potentially to be cleaned or otherwise checked or at least one area that is to be cleaned or otherwise checked and / or between or along locations that are to be cleaned or otherwise checked or areas are moved to detect the occurrence of contamination or to carry out other types of checks. Machine according to claim 51, characterized in that the different types of reviews on the occurrence of damage Respectively. Machine according to one of claims 1 to 52, characterized in that a / the control unit ( 212b ) responds to exceptional situations of the machine, such as a machine stop, a web break or web cut, and the cleaning arrangement ( 100b ) activated, if necessary at least with regard to the operation of the cleaning unit ( 212b ), or switches from the first to the second cleaning mode. Machine according to one of claims 33 to 53, characterized in that the cleaning unit ( 132 ; 134 ; 166a ; 20b ) is designed as a cleaning head that can be moved over the machine width or at least the web width, in particular can be moved over this width by means of the drive. Machine according to one of claims 33 to 54, characterized in that the cleaning unit or the cleaning head comprises: - a cleaning medium supply device ( 132 ; 134 ; 166a ; 214b . 218b ) for supplying cleaning medium, in particular a cleaning liquid and / or cleaning steam, to an area to be cleaned; or / and - a high pressure application device ( 132 ; 134 ; 166a ; 214b . 218b ) to apply a cleaning medium, in particular a cleaning liquid and / or cleaning steam, to an area to be cleaned which is at an increased pressure compared to ambient pressure; or / and - a suction device ( 226b . 222b ) for removing the supplied cleaning medium, possibly together with detached or absorbed dirt; or / and - a pneumatic cleaning device for blowing or / and suction cleaning of an area to be cleaned; or / and - an ultrasound application device for applying an ultrasound to an area to be cleaned; or / and - a blast cooling device for subjecting a region to be cleaned to blast cooling, preferably based on the action of dry ice; or / and - a touching mechanical cleaning device ( 220b ), preferably with at least one interchangeable cleaning element that acts mechanically on an area to be cleaned and is preferably set in motion by means of a drive ( 220b ). Machine according to claim 55, characterized in that as a cleaning element of the mechanical cleaning device at least one sponge element and / or at least one microfiber structure and / or at least one abrasive element and / and at least one brush element ( 220b ) is provided. Machine according to one of claims 33 to 56, characterized in that the cleaning unit ( 206b ) or the cleaning head comprises: - a cleaning medium supply device ( 214b . 218b ) for supplying cleaning medium, in particular a cleaning liquid and / or cleaning steam, to an area to be cleaned; and - a suction device ( 226b . 222b ) for removing the supplied cleaning medium, possibly together with detached or absorbed dirt. Machine according to Claim 57, characterized in that the cleaning medium supply device is a high-pressure application device ( 214b . 218b ) is designed to apply cleaning medium to the area to be cleaned which is under increased pressure compared to ambient pressure. Machine according to Claim 57 or 58, characterized in that the cleaning medium supply device has a nozzle arrangement which can be displaced by means of a drive into a movement which supports the cleaning, in particular a rotational or circular movement ( 218b ) having. Machine according to one of claims 57 to 59, characterized in that the cleaning unit or the cleaning head further comprises a mechanical cleaning device which operates in a touching manner ( 220b ), preferably with at least one interchangeable, mechanically acting on an area to be cleaned, preferably by means of a drive in a cleaning supporting movement, in particular rotational or circular movement, displaceable, 220b ). Machine according to claim 59 or 60, characterized in that the drive takes place by means of the supplied cleaning medium. Machine according to one of claims 55 to 61, characterized in that that water, preferably heated Water or / and water with at least one active ingredient, can be used as a cleaning liquid is. Machine according to one of claims 55 to 62, characterized in that that an operating temperature for the cleaning liquid or / and a relative amount of active ingredient or / and the type of active ingredient is adjustable. Machine according to one of claims 55 to 63, characterized in that the cleaning unit ( 206b ) or the cleaning head has a contacting sealing arrangement ( 224b ) which is or can be brought into sealing engagement with an assigned area of the machine to be cleaned, in order to seal off from the outside a work space which is delimited on the one hand by the area to be cleaned and on the other hand by the cleaning unit or the cleaning head, to which the cleaning medium can be supplied and from which if necessary, the cleaning medium can be extracted again. Process for at least area cleaning a machine according to the preamble of claim 1 or according to one the previous claims, characterized in that the cleaning is automated and automated he follows.