EP0556365A1 - Device for coating a web of material, in particular a paper or cardboard web, led around a mating roll. - Google Patents

Device for coating a web of material, in particular a paper or cardboard web, led around a mating roll.

Info

Publication number
EP0556365A1
EP0556365A1 EP92918312A EP92918312A EP0556365A1 EP 0556365 A1 EP0556365 A1 EP 0556365A1 EP 92918312 A EP92918312 A EP 92918312A EP 92918312 A EP92918312 A EP 92918312A EP 0556365 A1 EP0556365 A1 EP 0556365A1
Authority
EP
European Patent Office
Prior art keywords
piston
web
applicator
working position
cylinder unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92918312A
Other languages
German (de)
French (fr)
Other versions
EP0556365B1 (en
Inventor
Heribert Maroszek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jagenberg AG
Original Assignee
Jagenberg AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jagenberg AG filed Critical Jagenberg AG
Publication of EP0556365A1 publication Critical patent/EP0556365A1/en
Application granted granted Critical
Publication of EP0556365B1 publication Critical patent/EP0556365B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/10—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with blades
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
    • D06B1/10—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by contact with a member carrying the treating material
    • D06B1/14—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by contact with a member carrying the treating material with a roller
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution

Definitions

  • the invention relates to a device for coating a web of material guided around a counter-roller, in particular a paper or cardboard web, according to the preamble of patent claim 1.
  • Known devices for coating running paper or cardboard webs have an applicator mechanism which can be pivoted to the web in the wrapping area of the counter roll, the coating material, e.g. B. coating color, in excess and in the web running direction behind a metering system with a metering element (z. B. a scraper knife), which doctored the excess to the desired coat weight.
  • the coating material e.g. B. coating color
  • a metering element z. B. a scraper knife
  • the applicator contains an applicator roller which draws from a liquid chamber and is pivotably mounted on the counter roller. In the working position, a narrow gap (application gap) between the application roller and the counter roller remains free, which is completely filled by the coating color conveyed in.
  • the application unit can be used for maintenance, e.g. B. for cleaning, be pivoted into a maintenance position.
  • the metering system contains a scraper bar pivotably mounted in the direction of the counter roller with a scraper knife as a metering element which can be pressed against the web supported by the counter roller at a preselected angle for metering the weight of the line.
  • the scraper bar with the metering element can also be pivoted into a maintenance position, e.g. B. to replace the scraper knife.
  • the invention has for its object to provide a generic coating device in which the applicator and / or Dosing system both very quickly and precisely in the working position on the counter roller and can be swung out of it again.
  • the applicator and / or the metering system are first pivoted into an intermediate position by a first pneumatic or hydraulic (piston) cylinder unit when pivoting on the way from the maintenance position into the working position.
  • a first pneumatic or hydraulic (piston) cylinder unit In the intermediate position, the application element or the metering element is at a minimum, but sufficiently large, distance from the counter roller so that no application or metering is carried out.
  • a second hydraulic piston-cylinder unit is able to act in the area between the working position and the intermediate position opposite to the first piston-cylinder unit, that is to say to push it away from the counter roller.
  • the applicator or the dosing system To quickly swivel the counter-pressure of the second piston-cylinder unit, the applicator or the dosing system initially holds the intermediate position against the pressing force of the first piston-cylinder unit, by retracting the second piston-cylinder unit, the applicator or dosing system becomes very much quickly swung into the working position, the first piston-cylinder unit acting as a tensioned spring.
  • the distance to the counter roller in the working position can be precisely defined using an adjustable stop that presses the piston of the second piston-cylinder unit into the retracted end position.
  • Fig. 1 shows a rough schematic of the side view of a
  • Coating device in which the applicator and the metering system are pivotally mounted according to the invention.
  • Fig. 3 shows roughly schematically the storage of the metering system.
  • a driven counter-roller 2 extends over the working width and is partially wrapped in the material web 3, in the example a paper or cardboard web.
  • an applicator unit 4 is mounted with an applicator roller 6, which draws from a liquid chamber 5, as an application element on side pivot arms 7 and can be pivoted up and down.
  • the swivel mechanism of the applicator 4 is shown on its own:
  • the piston of an approximately vertical first piston-cylinder unit 9 is articulated at the end of the swivel arms 7 behind the applicator unit 4.
  • the cylinder is suspended on frame 1.
  • the stroke of the preferably pneumatic piston-cylinder unit 9 is designed so that the applicator roller 6 can be pivoted from its upper working position, in which it forms a narrow application gap with the counter-roller 7 in the looping area of the web 3, into a lower maintenance position.
  • a second hydraulic piston-cylinder unit 10 is fastened parallel to the first piston-cylinder unit 9, that is also approximately vertically.
  • Your piston presses up against a stop 1 1 attached to the frame 1, the distance to the piston of which is adjustable.
  • the stroke of the second piston-cylinder unit 10 and its distance from the stop 1 1 is chosen so that the applicator roller 6 assumes its working position when the piston-cylinder unit 9 has pulled the swivel arm 7 upwards so far that the retracted piston the piston-cylinder unit 10 abuts the stop 1 1. So the working position can be adjusted very precisely with the height adjustable stop 1 1.
  • the application roller 6 When the piston of the piston-cylinder unit 10 is extended into its end position, the application roller 6 is in an intermediate position in which no more coating color is applied to the web 3. In the intermediate position, it is either held by the first piston-cylinder unit 9 or lowered to the maintenance position, in which it and the liquid chamber 5 are easily accessible for maintenance work.
  • Swivel arm 13 mounted about the axis 14 up and down.
  • Scraper bar 15 on which a metering element, in the present example a scraper knife 16, is fastened with its foot in a clamping strip 17.
  • the scraper bar 15 can be pivoted relative to the swivel arms 13 in order to adjust the angle between the scraper knife 16 and the tangent to the counter roller 2.
  • Such metering systems are known and z. B. described in DE 28 25 907-A1.
  • each swivel arm 13 is connected to a pneumatic bellows cylinder fender 18 which is supported on the frame 1.
  • an adjustable stop 19 is fastened to the swivel arm 13 which, when the swivel arms 13 are swiveled up, that is to say when the metering system 12 swings against the counter-roller 2, against the piston of a hydraulic piston-cylinder unit fastened in the frame 1 20 is moved.
  • the piston-cylinder unit 20 is arranged approximately horizontally, so that its piston pushes the scraper bar 15 with the scraper knife 16 approximately radially away from the counter roller 2 when it is extended.
  • the stroke of the piston-cylinder unit 20 and its position relative to the stop 19 is chosen so that the piston in the retracted position - as shown in FIGS. 3 and 4 - in cooperation with the adjustable stop 19 defines the working position at which Scraper knife 16 abuts web 3.
  • the metering system 1 2 is in an intermediate position with a sufficient distance of the scraper knife 1 6 from the counter roller 2, so that even thickened adhesive spots from a web splice can pass through without any problems. This position is shown in Fig. 5.
  • the dosing system 12 can be lowered further from the intermediate position by means of the bellows cylinder 18 into a maintenance position, which is shown in FIG. 6.
  • a maintenance position the Dos ⁇ ersystem 12 is easily accessible, so that, for. B. the scraper knife 12 can be replaced.
  • a new web 3 can also be pulled in without any problems.
  • a doctor knife 16 instead of a doctor knife 16, other metering elements, for. B. a doctor rod or a doctor blade can be used.
  • the applicator 4 and the metering system 12 after the web 3 has been drawn into the maintenance positions (FIG. 6), are first pivoted up into the intermediate positions by means of the piston-cylinder unit 9 or the bellows cylinder 1 8.
  • the pistons of the piston-cylinder units 10, 20 extended into their end positions stop the movements of the swivel arms 7, 1 3 in the intermediate position.
  • the stops 1 1, 1 9 are so finely adjusted that when the pistons of the piston-cylinder units 10, 20 are subsequently retracted, the applicator 4 and the metering system 1 2 move into the respective working position.
  • the application roller 6 is first pressed at lightning speed by the piston-cylinder unit 10 into the intermediate position, immediately afterwards the piston-cylinder unit 20 presses the metering element 1 6 also very quickly from the working to the intermediate position. These two movements are also coordinated in such a way that no undosed ink film is produced and the scraper knife 6 only bears against the uncoated web 3 for such a short time that no damage to the scraper knife 1 6 occurs.
  • the applicator unit 4 and the metering system 12 are again pivoted to the counter-roller 2 in the respective working positions in the manner described above.
  • the device according to the invention has the further great advantage that the positioning in the working positions is not carried out exclusively with the cylinder units 18 or 9 .
  • the retracting pistons of the piston-cylinder units 20, 10 on both sides guide the swivel arms 13, 7 precisely and on both sides uniformly without tilting the scraper bar 15 or the applicator roller 6 in the respective working position. These can be adjusted easily and very precisely with the stops 19, 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Coating Apparatus (AREA)
  • Replacement Of Web Rolls (AREA)
  • Paper (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Lubricants (AREA)
  • Catalysts (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)

Abstract

On connaît des dispositifs pour enduire des bandes de matière (3), notamment des bandes de papier ou de carton, lesquels comportent un applicateur (4) et un système de dosage (12) montés respectivement sur des bras pivotants (7, 13) qui font pivoter l'applicateur (4) et le système de dosage (12) depuis une position de maintenance jusqu'à une position de travail au niveau d'un contre-cylindre (2). Le mécanisme de pivotement de l'applicateur (4) et/ou du système de dosage (12) possède, outre l'ensemble vérin (9, 18) permettant le pivotement de la position de maintenance à la position de travail, un ensemble hydraulique piston-cylindre (10, 20) qui pousse les bras pivotants (7, 13) de la position de travail àune position intermédiaire. L'applicateur (4) et/ou le système de dosage (12) peuvent ainsi pivoter très rapidement et avec une grande précision dans ou depuis la position de travail au niveau du contre-cylindre (2).Devices are known for coating strips of material (3), in particular strips of paper or cardboard, which comprise an applicator (4) and a metering system (12) respectively mounted on pivoting arms (7, 13) which pivot the applicator (4) and the dosing system (12) from a maintenance position to a working position at the level of a counter-cylinder (2). The pivoting mechanism of the applicator (4) and / or of the dosing system (12) has, in addition to the cylinder assembly (9, 18) allowing the pivoting from the maintenance position to the working position, a hydraulic assembly piston-cylinder (10, 20) which pushes the swivel arms (7, 13) from the working position to an intermediate position. The applicator (4) and / or the dosing system (12) can thus pivot very quickly and with great precision in or from the working position at the level of the counter-cylinder (2).

Description

B E S C H R E I B U N G DESCRIPTION
Vorrichtung zum Beschichten einer um eine Gegenwalze geführten Materialbahn, insbesondere einer Papier- oder KartonbahnDevice for coating a web of material guided around a counter roller, in particular a paper or cardboard web
Technisches GebietTechnical field
Die Erfindung betrifft eine Vorrichtung zum Beschichten einer um eine Gegenwalze geführten Materialbahn, insbesondere einer Papier- oder Kartonbahn, gemäß dem Oberbegriff des Patentanspruchs 1 .The invention relates to a device for coating a web of material guided around a counter-roller, in particular a paper or cardboard web, according to the preamble of patent claim 1.
Bekannte Vorrichtungen zum Beschichten laufender Papier- oder Kartonbahnen weisen ein an die Bahn im Umschlingungsbereich der Gegenwalze schwenkbares Auftragwerk, das Beschichtungsmaterial, z. B. Streichfarbe, in Überschuß aufträgt und in Bahnlaufrichtung dahinter ein Dosiersystem mit einem Dosierelement (z. B. ein Schabermesser) auf, das den Überschuß bis auf das gewünschte Strichgewicht abrakelt.Known devices for coating running paper or cardboard webs have an applicator mechanism which can be pivoted to the web in the wrapping area of the counter roll, the coating material, e.g. B. coating color, in excess and in the web running direction behind a metering system with a metering element (z. B. a scraper knife), which doctored the excess to the desired coat weight.
Stand der TechnikState of the art
Aus der DE 39 1 6 621 -A1 ist eine gattungsgemäße Vorrichtung bekannt, bei der das Auftragwerk eine aus einer Flüssigkeitskammer schöpfende Auftragwalze enthält, die an die Gegenwalze schwenkbar gelagert ist. In Arbeitsposition bleibt ein schmaler Spalt (Auftragspalt) zwischen der Auftragwalze und der Gegenwalze frei, der vollständig von der herangeförderten Streichfarbe gefüllt wird. Das Auftragwerk kann zur Wartung, z. B. zum Reinigen, in eine Wartungsposition abgeschwenkt werden.From DE 39 1 6 621 -A1 a generic device is known in which the applicator contains an applicator roller which draws from a liquid chamber and is pivotably mounted on the counter roller. In the working position, a narrow gap (application gap) between the application roller and the counter roller remains free, which is completely filled by the coating color conveyed in. The application unit can be used for maintenance, e.g. B. for cleaning, be pivoted into a maintenance position.
Das Dosiersystem enthält einen in Richtung zur Gegenwalze schwenkbar gelagerten Schaberbalken mit einem Schabermesser als Dosierelement, das zur Strichgewichtsdosferung mit einstellbarem Druck unter einem vorgewählten Winkel gegen die von der Gegenwalze abgestützte Bahn gedrückt werden kann. Der Schaberbalken mit dem Dosierelement kann ebenfalls in eine Wartungsposition abgeschwenkt werden, z. B. um das Schabermesser auszuwechseln.The metering system contains a scraper bar pivotably mounted in the direction of the counter roller with a scraper knife as a metering element which can be pressed against the web supported by the counter roller at a preselected angle for metering the weight of the line. The scraper bar with the metering element can also be pivoted into a maintenance position, e.g. B. to replace the scraper knife.
Darstellung der ErfindungPresentation of the invention
Bei schnell laufenden Beschϊchtungsvorrichtungen (Bahngeschwindig¬ keit > 600 m/min) ist es erforderlich, das Auftragwerk und/oder das Dosiersystem schneit und präzise in die jeweilige Arbeitsposition an die Gegenwalze zu schwenken. Ebenso ist es häufig notwendig, das Auftragwerk und/oder das Dosiersystem sehr schnell aus der jeweiligen Arbeitsposition abzuschwenken, z. B. beim Durchlauf einer Klebestelle aus einem Bahnsplice, bei Fehlstellen oder bei einem Bahnriß. Falls sowohl das Auftragwerk als auch das Dosiersystem schnell an- oder abgeschwenkt werden sollen, ist es notwendig, die beiden Schwenkbewegungen zeitlich präzise zu koordinieren. Einerseits muß verhindert werden, daß ein undosierter Farbfilm aufgetragen wird, der nachfolgende Anlageteile verschmutzen und die Bahn aufweichen und schwächen würde, mit der Folge, daß nachfolgend Bahnrisse auftreten. Andererseits darf ein Schabermesser nur kurz an einer unbeschichteten, trockenen Bahn anliegen, da es sich dabei aufgrund der hohen Reibung erhitzt und ausglühen könnte.In the case of fast-running coating devices (web speed> 600 m / min), it is necessary to pivot the application unit and / or the metering system snowingly and precisely into the respective working position on the counter roller. Likewise, it is often necessary to swivel the applicator and / or the dosing system very quickly out of the respective working position, e.g. B. when passing a glue from a web splice, in the event of defects or in a web break. If both the application unit and the dosing system are to be swiveled in or out quickly, it is necessary to coordinate the two swivel movements precisely in time. On the one hand, it must be prevented that an undosed ink film is applied, which would contaminate subsequent system parts and soften and weaken the web, with the result that web breaks subsequently occur. On the other hand, a scraper knife may only lie briefly on an uncoated, dry web, since it could heat up and burn out due to the high friction.
Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Beschichtungsvorrichtung zu schaffen, bei der das Auftragwerk und/oder das Dosiersystem sowohl sehr schnell und präzise in die Arbeitsstellung an der Gegenwalze als auch aus dieser wieder abgeschwenkt werden kann.The invention has for its object to provide a generic coating device in which the applicator and / or Dosing system both very quickly and precisely in the working position on the counter roller and can be swung out of it again.
Diese Aufgabe wird mit den Merkmalen des Patentanspruchs 1 gelöst.This object is achieved with the features of patent claim 1.
Nach der Erfindung werden das Auftragwerk und/oder das Dosiersystem jeweils von einer ersten pneumatischen oder hydraulischen (Kolben-)Zylinder-Einheit beim Anschwenken auf dem Weg von der Wartungsposition in die Arbeitsposition zunächst in eine Zwischenposition geschwenkt. In der Zwischenposition hat das Auftragelement bzw. das Dosiereiement einen möglichst geringen, jedoch ausreichend großen Abstand von der Gegenwalze, so daß nicht aufgetragen bzw. dosiert wird. Eine zweite hydraulische Kolben-Zylinder-Einheit ist in der Lage, im Bereich zwischen der Arbeitsposition und der Zwischenposition entgegengesetzt zur ersten Kolben-Zylinder-Einheit zu wirken, also von der Gegenwalze wegzudrücken.According to the invention, the applicator and / or the metering system are first pivoted into an intermediate position by a first pneumatic or hydraulic (piston) cylinder unit when pivoting on the way from the maintenance position into the working position. In the intermediate position, the application element or the metering element is at a minimum, but sufficiently large, distance from the counter roller so that no application or metering is carried out. A second hydraulic piston-cylinder unit is able to act in the area between the working position and the intermediate position opposite to the first piston-cylinder unit, that is to say to push it away from the counter roller.
Zum schnellen Anschwenken hält der Gegendruck der zweiten Kolben- Zylinder-Einheit das Auftragwerk bzw. das Dosiersystem zunächst gegen die Andrückkraft der ersten Kolben-Zylinder-Einheit in der Zwischenposition, durch Zurückfahren der zweiten Kolben-Zylinder-Einheit wird das Auftragwerk bzw. Dosiersystem sehr schnell in die Arbeitsposition geschwenkt, wobei die erste Kolben-Zylinder-Einheit als gespannte Feder wirkt. Dabei kann der Abstand zur Gegenwalze in der Arbeitsposition präzise durch einen einstellbaren Anschlag, der den Kolben der zweiten Kolben-Zylinder-Einheit in die eingefahrene Endposition drückt, exakt festgelegt werden.To quickly swivel the counter-pressure of the second piston-cylinder unit, the applicator or the dosing system initially holds the intermediate position against the pressing force of the first piston-cylinder unit, by retracting the second piston-cylinder unit, the applicator or dosing system becomes very much quickly swung into the working position, the first piston-cylinder unit acting as a tensioned spring. The distance to the counter roller in the working position can be precisely defined using an adjustable stop that presses the piston of the second piston-cylinder unit into the retracted end position.
Zum schnellen Abschwenken aus der Arbeits- in die Zwischenposition drückt der Kolben gegen den einstellbaren Anschlag und somit gegen die Wirkung der Rückhaltekraft der ersten Kolben-Zylinder-Einheit, die daher erheblich geringer als die Kraft der zweiten Kolben-Zylinder-Einheit eingestellt wird. Das Abschwenken in die Wartungsposition erfolgt entweder aufgrund des Eigengewichts des Auftragwerks bzw. Dosiersystems oder indem die erste Kolben- Zylinder-Einheit in Richtung von der Gegenwalze weg zieht oder drückt. Die Unteransprüche enthalten bevorzugte, da besonders vorteilhafte Ausgestaltungen der Erfindung.For rapid swiveling from the working to the intermediate position, the piston presses against the adjustable stop and thus against the effect of the restraining force of the first piston-cylinder unit, which is therefore set considerably less than the force of the second piston-cylinder unit. The pivoting into the maintenance position takes place either on the basis of the dead weight of the applicator or metering system or by the first piston-cylinder unit pulling or pushing in the direction away from the counter roller. The subclaims contain preferred, since particularly advantageous, embodiments of the invention.
Kurze Beschreibung der ZeichnungBrief description of the drawing
Die Zeichnung dient zur Erläuterung der Erfindung anhand vereinfacht dargestellter Ausführungsbeispiele.The drawing serves to explain the invention on the basis of simplified exemplary embodiments.
Fig. 1 zeigt grob schematisch die Seitenansicht einerFig. 1 shows a rough schematic of the side view of a
Beschichtungsvorrichtung, bei der das Auftragwerk und das Dosiersystem erfindungsgemäß schwenkbar gelagert sind.Coating device in which the applicator and the metering system are pivotally mounted according to the invention.
Fig. 2 zeigt grob schematisch die Lagerung des Auftragwerks,2 shows a rough schematic of the storage of the applicator,
Fig. 3 zeigt grob schematϊsch die Lagerung des Dosiersystems.Fig. 3 shows roughly schematically the storage of the metering system.
Die Fig. 4 bis 6 zeigen die Arbeits-, Zwischen- und Wartungsposition des Dosiersystems nach Fig. 3.4 to 6 show the working, intermediate and maintenance position of the metering system according to FIG. 3.
Weg zur Ausführung der ErfindungWay of carrying out the invention
Im Gestell 1 der Beschichtungsvorrichtung ist eine sich über die Arbeitsbreite erstreckende, angetriebene Gegenwalze 2 gelagert, die teilweise von der Materialbahn 3, im Beispiel eine Papier- oder Kartonbahn umschlungen ist. Unterhalb der Gegenwalze 2 ist ein Auftragwerk 4 mit einer aus einer Flüssigkeitskammer 5 schöpfenden Auftragwalze 6 als Auftragelement an seitlichen Schwenkarmen 7 auf- und abschwenkbar gelagert. In Fig. 2 ist der Schwenkmechanϊsmus des Auftragwerks 4 für sich alleine dargestellt:In the frame 1 of the coating device, a driven counter-roller 2 extends over the working width and is partially wrapped in the material web 3, in the example a paper or cardboard web. Below the counter roller 2, an applicator unit 4 is mounted with an applicator roller 6, which draws from a liquid chamber 5, as an application element on side pivot arms 7 and can be pivoted up and down. In Fig. 2, the swivel mechanism of the applicator 4 is shown on its own:
Zwei sich in etwa horizontal erstreckende, um die Achse 8 schwenkbar an beiden Seiten im Gestell 1 gelagerte Schwenkarme 7, von denen nur einer in Fig. 2 sichtbar ist, tragen an ihrer Oberseite die angetriebene Auftragwalze 6 und die Flüssigkeitskammer 5, aus der diese Streichfarbe schöpft, in den Auftragspalt fördert und auf die Bahn 3 aufträgt. Am nicht angelenkten freien Ende der Schwenkarme 7 hinter dem Auftragwerk 4 ist der Kolben einer in etwa senkrechten ersten Kolben-Zylinder-Einheit 9 angelenkt. Der Zylinder ist am Gestell 1 aufgehängt. Der Hub der bevorzugt pneumatischen Kolben-Zylinder- Einheit 9 ist so ausgelegt, daß die Auftragwalze 6 von ihrer oberen Arbeitsposition, in der sie mit der Gegenwalze 7 im Umschlingungsbereich der Bahn 3 einen engen Auftragspalt bildet, bis in eine untere Wartungsposition abgeschwenkt werden kann.Two approximately horizontally extending, about the axis 8 pivotally mounted on both sides in the frame 1 pivot arms 7, of which only one is visible in Fig. 2, carry on their top the driven applicator roller 6 and the liquid chamber 5, from which this coating color scoops, feeds into the order gap and applies to the web 3. On the non-articulated free The piston of an approximately vertical first piston-cylinder unit 9 is articulated at the end of the swivel arms 7 behind the applicator unit 4. The cylinder is suspended on frame 1. The stroke of the preferably pneumatic piston-cylinder unit 9 is designed so that the applicator roller 6 can be pivoted from its upper working position, in which it forms a narrow application gap with the counter-roller 7 in the looping area of the web 3, into a lower maintenance position.
Am Ende der Schwenkarme 7 ist jeweils eine zweite hydraulische Kolben-Zylinder- Einheit 10 parallel zur ersten Kolben-Zylinder-Einheit 9, also ebenfalls in etwa senkrecht, befestigt. Ihr Kolben drückt nach oben gegen eine am Gestell 1 befestigten Anschlag 1 1 , dessen Abstand zum Kolben einstellbar ist. Beim Ausfahren drückt der Kolben 10 gegen den Anschlag 1 1 und somit den Schwenkarm 7 mit dem Auftragwerk 4 nach unten von der Gegenwalze 2 weg. Der Hub der zweiten Kolben-Zylinder-Einheit 10 und ihr Abstand vom Anschlag 1 1 ist so gewählt, daß die Auftragwalze 6 ihre Arbeitsposition einnimmt, wenn die Kolben-Zylinder-Einheit 9 den Schwenkarm 7 soweit nach oben gezogen hat, daß der eingefahrene Kolben der Kolben-Zylinder-Einheit 10 am Anschlag 1 1 anliegt. So läßt sich die Arbeitsposition sehr präzise mit dem in der Höhe verstellbaren Anschlag 1 1 einstellen. Wenn der Kolben der Kolben-Zylinder- Einheit 10 in seine Endposition ausgefahren ist, befindet sich die Auftragwalze 6 in einer Zwischenposition, bei der keine Streichfarbe mehr auf die Bahn 3 aufgetragen wird. In der Zwischenposition wird sie entweder von der ersten Kolben-Zylinder-Einheit 9 gehalten oder bis in die Wartungsposition abgesenkt, in der sie und die Flüssigkeitskammer 5 für Wartungsarbeiten gut zugänglich sind.At the end of the swivel arms 7, a second hydraulic piston-cylinder unit 10 is fastened parallel to the first piston-cylinder unit 9, that is also approximately vertically. Your piston presses up against a stop 1 1 attached to the frame 1, the distance to the piston of which is adjustable. When extending the piston 10 presses against the stop 1 1 and thus the swivel arm 7 with the applicator 4 downwards from the counter roller 2. The stroke of the second piston-cylinder unit 10 and its distance from the stop 1 1 is chosen so that the applicator roller 6 assumes its working position when the piston-cylinder unit 9 has pulled the swivel arm 7 upwards so far that the retracted piston the piston-cylinder unit 10 abuts the stop 1 1. So the working position can be adjusted very precisely with the height adjustable stop 1 1. When the piston of the piston-cylinder unit 10 is extended into its end position, the application roller 6 is in an intermediate position in which no more coating color is applied to the web 3. In the intermediate position, it is either held by the first piston-cylinder unit 9 or lowered to the maintenance position, in which it and the liquid chamber 5 are easily accessible for maintenance work.
In Bahnlaufrichtung hinter dem Auftragwerk 4 ist in Gestell 1 ein DosiersystemIn the web running direction behind the applicator 4 there is a metering system in frame 1
12 in Richtung zur Gegenwalze 1 schwenkbar gelagert, dessen prinzipieller Aufbau in Fig. 3 für sich alleine dargestellt ist:12 pivotally mounted in the direction of the counter roller 1, the basic structure of which is shown in FIG. 3 on its own:
Am unteren Teil des Gestells 1 ist an jeder Seite der Vorrichtung einAt the lower part of the frame 1 is on each side of the device
Schwenkarm 13 um die Achse 14 auf- und abschwenkbar gelagert. Die SchwenkarmeSwivel arm 13 mounted about the axis 14 up and down. The swivel arms
13 tragen an ihrem freien Ende einen sich über die Arbeitsbreite erstreckenden Schaberbalken 15, an dem ein Dosierelement, im vorliegenden Beispiel ein Schabermesser 16, mit seinem Fuß in einer Klemmleiste 17 befestigt ist. Der Schaberbalken 15 kann zur Einstellung des Winkels zwischen dem Schabermesser 16 und der Tangente an die Gegenwalze 2 relativ zu den Schwenkarmen 13 verschwenkt werden. Derartige Dosiersysteme sind bekannt und z. B. in der DE 28 25 907-A1 beschrieben.13 carry at their free end an extending across the working width Scraper bar 15, on which a metering element, in the present example a scraper knife 16, is fastened with its foot in a clamping strip 17. The scraper bar 15 can be pivoted relative to the swivel arms 13 in order to adjust the angle between the scraper knife 16 and the tangent to the counter roller 2. Such metering systems are known and z. B. described in DE 28 25 907-A1.
Zum An- und Abschwenken des Schabermessers 1 6 an die von der Gegenwalze 2 abgestützte Bahn 3 ist jeder Schwenkarm 13 mit einem pneumatischen Balgzylfnder 18 verbunden, der sich am Gestell 1 abstützt. An der dem Balgzylinder 18 abgewandten Seite ist am Schwenkarm 13 ein verstellbarer Anschlag 19 befestigt, der beim Hochschwenken der Schwenkarme 1 3, also beim Anschwenken des Dosiersystems 12 an die Gegenwalze 2, gegen den Kolben einer im Gestell 1 befestigten hydraulischen Kolben-Zylinder-Einheit 20 bewegt wird.To pivot the scraper knife 1 6 onto and off the web 3 supported by the counter-roller 2, each swivel arm 13 is connected to a pneumatic bellows cylinder fender 18 which is supported on the frame 1. On the side facing away from the bellows cylinder 18, an adjustable stop 19 is fastened to the swivel arm 13 which, when the swivel arms 13 are swiveled up, that is to say when the metering system 12 swings against the counter-roller 2, against the piston of a hydraulic piston-cylinder unit fastened in the frame 1 20 is moved.
Die Kolben-Zylinder-Einheit 20 ist in etwa waagerecht angeordnet, so daß ihr Kolben beim Ausfahren den Schaberbalken 15 mit dem Schabermesser 16 in etwa radial von der Gegenwaize 2 wegdrückt. Der Hub der Kolben-Zylinder-Einheit 20 und ihre Position relativ zum Anschlag 19 ist so gewählt, daß der Kolben in eingefahrener Position - wie in Fig. 3 und 4 dargestellt - in Zusammenwirken mit dem verstellbaren Anschlag 19 die Arbeitsposition festlegt, bei der das Schabermesser 16 an der Bahn 3 anliegt. Bei vollständig ausgefahrenem Kolben befindet sich das Dosiersystem 1 2 in einer Zwischenposition mit ausreichendem Abstand des Schabermessers 1 6 von der Gegenwalze 2, so daß auch verdickte Klebestellen aus einem Bahnsplice problemlos durchlaufen können. Diese Position ist in Fig. 5 dargestellt. Aus der Zwischenposition kann das Dosier¬ system 12 mittels des Balgzylinders 18 weiter in eine Wartungsposition abgesenkt werden, die in Fig. 6 gezeigt ist. In der Wartungsposition ist das Dosϊersystem 12 gut zugänglich, so daß z. B. das Schabermesser 12 ausgewechselt werden kann. In dieser Position kann auch eine neue Bahn 3 problemlos eingezogen werden.The piston-cylinder unit 20 is arranged approximately horizontally, so that its piston pushes the scraper bar 15 with the scraper knife 16 approximately radially away from the counter roller 2 when it is extended. The stroke of the piston-cylinder unit 20 and its position relative to the stop 19 is chosen so that the piston in the retracted position - as shown in FIGS. 3 and 4 - in cooperation with the adjustable stop 19 defines the working position at which Scraper knife 16 abuts web 3. When the piston is fully extended, the metering system 1 2 is in an intermediate position with a sufficient distance of the scraper knife 1 6 from the counter roller 2, so that even thickened adhesive spots from a web splice can pass through without any problems. This position is shown in Fig. 5. The dosing system 12 can be lowered further from the intermediate position by means of the bellows cylinder 18 into a maintenance position, which is shown in FIG. 6. In the maintenance position the Dosϊersystem 12 is easily accessible, so that, for. B. the scraper knife 12 can be replaced. In this position, a new web 3 can also be pulled in without any problems.
Anstelle eines Schabermessers 16 können auch andere Dosierelemente, z. B. ein Rakelstab oder eine Schaberleiste eingesetzt werden. Beim Start der Vorrichtung werden das Auftragwerk 4 und das Dosiersystem 12, nachdem die Bahn 3 in den Wartungspositionen (Fig. 6) eingezogen wurde, zunächst mittels der Kolben-Zylinder-Einheit 9 bzw. dem Balgzylinder 1 8 in die Zwischenpositionen hochgeschwenkt. Die in ihre Endpositionen ausgefahrenen Kolben der Kolben-Zylinder-Einheiten 10, 20 stoppen die Bewegungen der Schwenkarme 7, 1 3 in der Zwischenposition ab. Die Anschläge 1 1 , 1 9 sind so fein justiert, daß beim anschließenden Einfahren der Kolben der Kolben-Zylinder-Einheiten 10, 20 das Auftragwerk 4 und das Dosiersystem 1 2 sich in die jeweilige Arbeitsposition bewegen. Das Anschwenken an die Gegenwalze 2 in die jeweilige Arbeitsposition erfolgt zeitlich koordiniert und präzise so, daß sowohl kein undosierter Farbfilm aufgetragen wird, als auch das Schabermesser 1 6 nur sehr kurz an der noch unbeschichteten Bahn 3 anliegt; d. h. das Schabermesser 1 6 wird entweder gleichzeitig mit der Auftragwalze 6 an die Gegenwalze 2 geschwenkt oder mit geringem Zeitabstand vorher.Instead of a doctor knife 16, other metering elements, for. B. a doctor rod or a doctor blade can be used. At the start of the device, the applicator 4 and the metering system 12, after the web 3 has been drawn into the maintenance positions (FIG. 6), are first pivoted up into the intermediate positions by means of the piston-cylinder unit 9 or the bellows cylinder 1 8. The pistons of the piston-cylinder units 10, 20 extended into their end positions stop the movements of the swivel arms 7, 1 3 in the intermediate position. The stops 1 1, 1 9 are so finely adjusted that when the pistons of the piston-cylinder units 10, 20 are subsequently retracted, the applicator 4 and the metering system 1 2 move into the respective working position. The pivoting to the counter roller 2 in the respective working position takes place in a time-coordinated and precise manner so that both no undosed ink film is applied and the scraper knife 1 6 lies only very briefly on the still uncoated web 3; ie the scraper knife 1 6 is either pivoted simultaneously with the applicator roller 6 to the counter roller 2 or with a small interval beforehand.
Falls eine Klebestelle aus einem Splice von einem nicht dargestellten Meßgerät detektiert wird oder ein Bahnriß auftritt, wird zunächst die Auftragwalze 6 blitzschnell von der Kolben-Zylinder-Einheit 10 in die Zwischenposition gedrückt, unmittelbar danach drückt die Kolben-Zylinder-Einheit 20 das Dosierelement 1 6 ebenfalls sehr schnell aus der Arbeits- in die Zwischenposition. Diese beiden Bewegungen sind ebenfalls so koordiniert, daß kein undosierter Farbfilm erzeugt wird und das Schabermesser 6 nur so kurz an der unbeschichteten Bahn 3 anliegt, daß keine Beschädigungen des Schabermessers 1 6 auftreten. Nach Durchlauf der Klebestelle werden das Auftragwerk 4 und das Dosiersystem 12 wieder auf die vorhin beschriebene Weise an die Gegenwalze 2 in die jeweiligen Arbeitspositionen geschwenkt.If a splice from a splice is detected by a measuring device (not shown) or a web break occurs, the application roller 6 is first pressed at lightning speed by the piston-cylinder unit 10 into the intermediate position, immediately afterwards the piston-cylinder unit 20 presses the metering element 1 6 also very quickly from the working to the intermediate position. These two movements are also coordinated in such a way that no undosed ink film is produced and the scraper knife 6 only bears against the uncoated web 3 for such a short time that no damage to the scraper knife 1 6 occurs. After passing through the gluing point, the applicator unit 4 and the metering system 12 are again pivoted to the counter-roller 2 in the respective working positions in the manner described above.
Neben dem sehr schnellen Ab- und Anschwenken aus und in die jeweiligen Arbeitspositionen des Dosierelements 1 6 und der Auftragwalze 6 weist die Vorrichtung nach der Erfindung den weiteren großen Vorteil auf, daß die Positionierung in die Arbeitspositionen nicht ausschließlich mit den Zylindereinheiten 18 bzw. 9 erfolgt. Die einfahrenden Kolben der Kolben- Zyiinder-Einheiten 20, 10 zu beiden Seiten führen die Schwenkarme 13, 7 mit einstellbarer Geschwindigkeit exakt und beidseitig gleichmäßig ohne Verkanten des Schaberbalkens 15 bzw. der Auftragwalze 6 in die jeweilige Arbeitsposition. Diese lassen sich mit den Anschlägen 19, 11 einfach und sehr genau einstellen. In addition to the very rapid swiveling and swiveling out of and into the respective working positions of the metering element 1 6 and the applicator roller 6, the device according to the invention has the further great advantage that the positioning in the working positions is not carried out exclusively with the cylinder units 18 or 9 . The retracting pistons of the piston-cylinder units 20, 10 on both sides guide the swivel arms 13, 7 precisely and on both sides uniformly without tilting the scraper bar 15 or the applicator roller 6 in the respective working position. These can be adjusted easily and very precisely with the stops 19, 11.

Claims

PATENTANSPRÜCHE PATENT CLAIMS
1.1.
Vorrichtung zum Beschichten einer um eine Gegenwalze (2) geführten Materialbahn (3), insbesondere einer Papier- oder Kartonbahn, mit einem an Schwenkarmen (7) befestigten Auftragwerk (4), dessen Auftragelement, insbesondere eine Auftragwalze (6), von einer Wartungsposition in die Arbeitsposition an der Gegenwalze (2) schwenkbar ist, und mit einem an Schwenkarmen (13) befestigten Dosiersystem (12), dessen Dosierelement (Schabermesser 16) ebenfalls von einer Wartungsposition in die Arbeitsposition an der Gegenwalze (2) schwenkbar ist, d a d u rch g ekennzeich net, daß der Schwenkmechanismus des Auftragwerks (4) und/oder des Dosiersystems (12) jeweils neben der das Anschwenken aus der Wartungs- in die Arbeitsposition bewirkenden Zylinder-Einheit (9 bzw.18) eine hydraulische Kolben-Zylinder-Einheit (10 bzw.20) enthält, die die Schwenkarme (7 bzw.13) aus der Arbeitsposition in eine Zwischenposition drückt.Device for coating a material web (3), in particular a paper or cardboard web, which is guided around a counter roller (2), with an application unit (4) attached to swivel arms (7), the application element, in particular an application roller (6), from a maintenance position in the working position on the counter roller (2) can be pivoted, and with a metering system (12) attached to pivot arms (13), the metering element (scraper knife 16) of which can also be pivoted from a maintenance position into the working position on the counter roller (2), so that g ekennzeich net that the pivoting mechanism of the applicator (4) and / or the metering system (12) each have a hydraulic piston-cylinder unit (10th) in addition to the cylinder unit (9 or 18) causing the pivoting from the maintenance position into the working position or 20) that presses the swivel arms (7 or 13) from the working position into an intermediate position.
2.Second
Vorrichtung nach Anspruch 1, da d u rch ge ken nz e ic h n et, daß der Kolben der Kolben-Zylinder-Einheit (10 bzw.20) zum Abschwenken aus der Arbeits- in die Zwischenposition gegen einen einstellbaren Anschlag (11 bzw.19) drückt. Apparatus according to claim 1, since you know that the piston of the piston-cylinder unit (10 or 20) for pivoting out of the working position into the intermediate position against an adjustable stop (11 or 19) presses.
3.3rd
Vorrichtung nach Anspruch 2, dadu rch gekennzeichn et, daß die Kolben-Zylinder-Einheit (10 bzw.20) am Gestell (1) oder an den Schwenkarmen (7 bzw.13) so befestigt und der Hub ihres Kolbens so ausgelegt ist, daß das Auftragwerk (4) bzw. das Dosiersystem (12) die Arbeitsposition einnimmt, wenn der Kolben sich in eingefahrener Endposition befindet. Apparatus according to claim 2, dadu rch gekennzeichn et that the piston-cylinder unit (10 or 20) on the frame (1) or on the swivel arms (7 and 13 respectively) and the stroke of its piston is designed so that the applicator (4) or the dosing system (12) assumes the working position when the piston is in the retracted end position.
EP92918312A 1991-09-11 1992-09-03 Device for coating a web of material, in particular a paper or cardboard web, led around a mating roll Expired - Lifetime EP0556365B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4130118A DE4130118C2 (en) 1991-09-11 1991-09-11 Device for coating a web of material guided around a counter roller, in particular a paper or cardboard web
DE4130118 1991-09-11
PCT/EP1992/002031 WO1993005223A1 (en) 1991-09-11 1992-09-03 Device for coating a web of material, in particular a paper or cardboard web, led around a mating roll

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EP0556365A1 true EP0556365A1 (en) 1993-08-25
EP0556365B1 EP0556365B1 (en) 1995-11-02

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US (1) US5460119A (en)
EP (1) EP0556365B1 (en)
JP (1) JPH06501647A (en)
AT (1) ATE129759T1 (en)
BR (1) BR9205389A (en)
CA (1) CA2094592A1 (en)
DE (2) DE4130118C2 (en)
ES (1) ES2081625T3 (en)
FI (1) FI104330B1 (en)
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WO1993005223A1 (en) 1993-03-18
EP0556365B1 (en) 1995-11-02
ATE129759T1 (en) 1995-11-15
JPH06501647A (en) 1994-02-24
BR9205389A (en) 1994-06-21
FI932111A (en) 1993-05-10
FI104330B (en) 1999-12-31
ES2081625T3 (en) 1996-03-16
FI104330B1 (en) 1999-12-31
DE4130118A1 (en) 1993-03-25
DE59204198D1 (en) 1995-12-07
CA2094592A1 (en) 1993-03-12
US5460119A (en) 1995-10-24
FI932111A0 (en) 1993-05-10
DE4130118C2 (en) 1995-04-20

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