EP0523264B1 - Device for making single-faces corrugated paper - Google Patents

Device for making single-faces corrugated paper Download PDF

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Publication number
EP0523264B1
EP0523264B1 EP19910111953 EP91111953A EP0523264B1 EP 0523264 B1 EP0523264 B1 EP 0523264B1 EP 19910111953 EP19910111953 EP 19910111953 EP 91111953 A EP91111953 A EP 91111953A EP 0523264 B1 EP0523264 B1 EP 0523264B1
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EP
European Patent Office
Prior art keywords
corrugated
roll
size
web
pressure chamber
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.)
Expired - Lifetime
Application number
EP19910111953
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German (de)
French (fr)
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EP0523264A1 (en
Inventor
Hans Ing. Mosburger
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.)
BHS Corrugated Maschinen und Anlagenbau GmbH
Original Assignee
BHS Bayerische Berg Hutten und Salzwerke AG
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Filing date
Publication date
Application filed by BHS Bayerische Berg Hutten und Salzwerke AG filed Critical BHS Bayerische Berg Hutten und Salzwerke AG
Priority to DE91111953T priority Critical patent/DE59100468D1/en
Priority to EP19910111953 priority patent/EP0523264B1/en
Publication of EP0523264A1 publication Critical patent/EP0523264A1/en
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Publication of EP0523264B1 publication Critical patent/EP0523264B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2845—Details, e.g. provisions for drying, moistening, pressing
    • B31F1/2854—Means for keeping the sheet in contact with one of the corrugating rollers after corrugating, but before applying the facer sheet, e.g. by air pressure, suction or pressing fingers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2818—Glue application specially adapted therefor

Definitions

  • the invention relates to a device for producing single-sided corrugated cardboard with the features of the preamble of claims 1, 2, 3 or 6.
  • the corrugating roller which works together with the glue application roller, is provided with spaced-apart annular grooves, which enable the build-up of a differential pressure to be set up on the corrugated web.
  • the glue application roller is provided with longitudinal grooves. The circumferential pitch corresponds to the tooth pitch of the associated corrugated roller.
  • the glue to be transferred is also taken up by the groove valleys of the glue application roller.
  • the pressure chamber seals rub against the crest of the grooves.
  • the metered glue transfer is not significantly impaired by the seals in the pressure chambers, but the formation of longitudinal grooves on the glue application roller and the synchronous running of the glue application roller with the associated corrugating roller are complex. In addition, different longitudinal grooves, so that different glue application rollers, are required for different working speeds. In addition, glue particles are added high working speed when transferring glue to the corrugated roller. A metered transfer of glue is disrupted.
  • the invention has for its object to develop the known device according to DE-OS 34 37 190 so that the device is simplified while improving the metered glue transfer.
  • the risk of glue contamination should be reduced.
  • easy access to the gluing unit should be made possible.
  • the invention offers the advantage that an improved and simpler metered transfer of the glue from the glue application roller to the associated corrugating roller is achieved. Characterized in that the wheels of the pressure chambers facing the glue unit against the rear wall of the glue pan, that of the glue transfer point running surface of the glue application roller or sealed against the underside of the glue unit, the metered glue transfer is not disturbed because these surfaces do not feed any glue to the glue transfer point. If different pressures are formed in the two pressure chambers according to claim 6, the greater pressure prevailing in the pressure chamber adjoining the pressure roller, the metered glue transfer can additionally be improved because swirling around of the glue particles is reduced, thus also depositing on glue to the transfer point promoting areas is avoided.
  • the one-sided corrugated cardboard machine 1 shown schematically in FIG. 1 has a first corrugated roller 2 and a second corrugated roller 3 meshing therewith.
  • the corrugated rollers 2, 3 are driven in the direction indicated by the arrow. They are hollow, for example to be heated with steam.
  • a paper web 4 tapering in the direction of the arrow is corrugated between the corrugating rollers 2, 3.
  • the corrugated web 5 covers approximately half the circumferential area of the corrugating roller 3.
  • a glue unit 6 has a glue application roller 7 which can be rotated in the direction indicated by the arrow. It is placed against the corrugated web 5 on the corrugating roller 3 and transfers glue 8 to the apex of the corrugated web 5.
  • the glue application roller 7 takes glue 8 from a glue container 9.
  • the bottom 10 of the glue container 9 has a glue metering roller 11 which can be rotated in the direction indicated by the arrow.
  • the thickness of the glue application is determined via the gap between the glue application roller 7 and the glue metering roller 11.
  • a scraper 12 seals the glue metering roller 11 from the bottom 10 of the glue container 9.
  • glue 8 is thereby stripped from the glue metering roller 11.
  • the level of the glue 8 must at least exceed the glue metering roller 11.
  • the glue unit 6 consisting of the glue application roller 7, the metering roller 11, the stripper 12 with glue container 9 forms a partition 14 for two pressure chambers, namely the lower pressure chamber 16 and the upper pressure chamber 17.
  • the pressure chamber wall 18 of the pressure chamber 16 is with the back of the Glue container 9 connected.
  • the pressure chamber wall 18 is sealed against the corrugated roller 2 by a seal 19.
  • the pressure chamber 16 is connected via a connection 20 to a pressure source (not shown) with the pressure P 2.
  • An air pressure source is preferably used.
  • the pressure chamber wall 21 of the pressure chamber 17 is also firmly connected to the rear wall of the glue container 9.
  • the pressure chamber wall 21 is sealed against a pressure roller 24 via a seal 22 and a sealing roller 23. This presses a smooth taper in the direction indicated by the arrow Paper web 25 against the corrugated web 5 provided with glue.
  • the resulting one-sided corrugated cardboard web 26 runs out of the single-sided corrugated cardboard machine 1 in the direction indicated by the arrow.
  • the pressure chamber wall 21 is also provided with a connection 27.
  • An overpressure source (not shown) with the overpressure P 1 is connected to this.
  • An air pressure source is preferably used.
  • the pressure chambers 16, 17 exert pressures P 1 and P 2 on the pressure areas 28, 29 of the corrugated web 5.
  • the corrugated web 5 is pressed securely onto the corrugated roller 3 even at a higher working speed of the single-sided corrugated cardboard machine.
  • the corrugating roller 3 is provided with longitudinal grooves, not shown, at longitudinal intervals.
  • a vacuum box or suction grommets engaging in the ring grooves can also interact with these ring grooves on the side opposite the glue application roller 7. As a result, a vacuum and thus a suction is exerted on the underside of the corrugated web 5 via the ring grooves.
  • the pressures P 1 and P 2 can be the same or different.
  • the pressure P 1 is preferably greater than the pressure P 2. This reduces the splashing of glue during the glue transfer, which will be explained later.
  • the pressure chamber wall 21 is not connected to the rear wall of the glue container 9, but is sealed against the glue application roller 7 via a seal 30.
  • This seal 30 can serve as a channel for receiving and discharging the glue stripped from the glue application roller 7.
  • the pressure chamber wall 18 or 21 is designed to seal against the partition wall 14.
  • the pressure chamber wall 18 is preferably sealed off from the metering roller 11 by a seal 31.
  • the seal 30, which is preferably designed as a sealing gap, and the seal 31 are arranged so that they cooperate with the apex of the glue application roller 7 or the glue metering roller 11, such that the glue unit 6 is separated from the pressure chambers 16 in the direction indicated by the arrow or 17 is displaceable.
  • the pressure chambers 16, 17 themselves can also be designed to be displaceable in the indicated arrow directions.
  • the unit consisting of glue unit 6 and pressure chambers 16, 17 can only be moved together in the direction of the arrow indicated.
  • the unit comprising the glue unit 6 and the pressure chamber 16 can be moved together in the direction of the arrow indicated.
  • the gluing unit 6 and the pressure chambers 16, 17 can be moved independently of one another.
  • the corrugated roller 3 is driven in the direction indicated by the arrow. It is covered with the corrugated paper web 5.
  • the glue application roller 7 set against the corrugating roller 3 is driven with slip in the direction indicated by the arrow.
  • the glue layer 32 carried along by the glue application roller 7 is pressed in by the first teeth of the corrugated roller 3 covered with the corrugated web 5 and pushed together as a result of the slippage.
  • the teeth of the corrugated roller 3 also close the glue application roller 7 longitudinal chambers with the overpressure P 2.
  • glue bridges 33 form between the teeth of the corrugated roller 3 and the glue application roller 7, which finally tear under the effect of the higher pressure P 1 compared to the pressure P 2.
  • a reduced number of thrown off glue drops 34 occurs.
  • the different pressures P 1, P 2 in the chambers 16, 17 can also be set in that a pressure source is connected to the connections 20 and 27 of the chambers 16, 17 via adjustable throttle valves.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur Herstellung von einseitiger Wellpappe mit den Merkmalen des Oberbegriffes der Patentansprüche 1, 2, 3 oder 6.The invention relates to a device for producing single-sided corrugated cardboard with the features of the preamble of claims 1, 2, 3 or 6.

Bei einer bekannten Vorrichtung nach der FR-PS 1 467 195 ist es bekannt, beiderseits der Leimauftragswalze Druckkammern vorzusehen, mittels derer die gewellte Papierbahn bereichsweise an die zugehörige Riffelwalze angedrückt wird. Die Druckkammern sind gegenüber der zugehörigen Riffelwalze schwer abzudichten. Hierbei wird der dosierte Leimauftrag auf den ablaufenden Papierbahnkämmen durch die aus der Druckkammer austretende Luftströmung beeinträchtigt.In a known device according to FR-PS 1 467 195, it is known to provide pressure chambers on both sides of the glue application roller, by means of which the corrugated paper web is pressed in regions onto the associated corrugating roller. The pressure chambers are difficult to seal against the associated corrugated roller. Here, the metered application of glue on the running paper web combs is impaired by the air flow emerging from the pressure chamber.

Aus der DE-OS 34 37 190 ist es bekannt, die einen Ränder der beiderseits der Leimauftragswalze ausgebildeten Druckkammern gegenüber der einen Riffelwalze bzw. der Anpreßwalze abzudichten. Die anderen Ränder dieser Druckkammern sind gegenüber der zur Leimübertragsstelle zulaufenden, wie auch davon ablaufenden Fläche der Leimauftragswalze abgedichtet. Die mit der Leimauftragswalze zusammenarbeitende Riffelwalze ist mit beabstandeten Ringnuten versehen, die den Aufbau eines Differenzdruckes zur Einrichtung auf die gewellte Bahn ermöglichen. Die Leimauftragswalze ist mit Längsrillen versehen. Die Umfangsteilung entspricht der Zahnteilung der zugehörigen Riffelwalze. Der zu übertragende Leim wird auch von den Rillentälern der Leimauftragswalze aufgenommen. Die Abdichtungen der Druckkammern schleifen an den Rillenscheiteln. Sie entfernen den dort befindlichen Leim. Der dosierte Leimübertrag wird durch die Abdichtungen der Druckkammern nicht wesentlich beeinträchtigt, jedoch ist die Ausbildung von Längsrillen an der Leimauftragswalze und der synchrone Lauf der Leimauftragswalze mit zugehöriger Riffelwalze aufwendig. Außerdem sind für unterschiedliche Arbeitsgeschwindigkeiten andere Längsrillen, damit andere Leimauftragswalzen, erforderlich. Zudem werden Leimteilchen bei hoher Arbeitsgeschwindigkeit beim Leimübertrag auf die Riffelwalze abgeschleudert. Ein dosierter Leimübertrag wird gestört.From DE-OS 34 37 190 it is known to seal the edges of the pressure chambers formed on both sides of the glue application roller with respect to the one corrugated roller or the pressure roller. The other edges of these pressure chambers are sealed with respect to the surface of the glue application roller that runs to and from the glue transfer point. The corrugating roller, which works together with the glue application roller, is provided with spaced-apart annular grooves, which enable the build-up of a differential pressure to be set up on the corrugated web. The glue application roller is provided with longitudinal grooves. The circumferential pitch corresponds to the tooth pitch of the associated corrugated roller. The glue to be transferred is also taken up by the groove valleys of the glue application roller. The pressure chamber seals rub against the crest of the grooves. They remove the glue located there. The metered glue transfer is not significantly impaired by the seals in the pressure chambers, but the formation of longitudinal grooves on the glue application roller and the synchronous running of the glue application roller with the associated corrugating roller are complex. In addition, different longitudinal grooves, so that different glue application rollers, are required for different working speeds. In addition, glue particles are added high working speed when transferring glue to the corrugated roller. A metered transfer of glue is disrupted.

Aus der DE-PS 29 35 677 ist es bekannt, das Leimwerk durch eine einzige Druckkammer zu umschließen, welche an eine Überdruckquelle angeschlossen ist. Die Ränder dieser Druckkammer sind gegenüber der Anpreßwalze bzw. der die Papierbahn mit wellenden Riffelwalze über Dichtelemente abgedichtet. Die die gewellte Bahn mitnehmende Riffelwalze ist mit mehreren im Abstand voneinander angeordneten Ringnuten versehen. Über diese Ringnuten wird die Innenseite der gewellten Bahn mit dem Außendruck in Verbindung gesetzt. Die Bereiche der gewellten Bahn zwischen Leimauftragswalze und Riffelwalze bzw. Anpreßwalze sind mit gleichem Druck beaufschlagt. Dies ist für die Güte des Leimauftrages nachteilig. Es besteht beim Übertragungsvorgang des Leimes bei hoher Arbeitsgeschwindigkeit die Gefahr, daß eine große Zahl von Leimtröpfchen abgeschleudert werden. Zudem kann bei Verwendung einer einzigen Druckkammer das Leimwerk nur über Zugangsöffnungen in der Kammer gewartet werden. Die Wartungsarbeit ist umständlich.From DE-PS 29 35 677 it is known to enclose the glue unit by a single pressure chamber which is connected to an overpressure source. The edges of this pressure chamber are sealed off from the pressure roller or the paper web with corrugated corrugating roller by means of sealing elements. The corrugated roller carrying the corrugated web is provided with a plurality of annular grooves arranged at a distance from one another. These ring grooves are used to connect the inside of the corrugated sheet to the outside pressure. The areas of the corrugated web between the glue application roller and the corrugated roller or pressure roller are subjected to the same pressure. This is disadvantageous for the quality of the glue application. There is a risk that a large number of glue droplets will be thrown off during the transfer process of the glue at high working speed. In addition, when using a single pressure chamber, the glue unit can only be serviced via access openings in the chamber. The maintenance work is cumbersome.

Der Erfindung liegt die Aufgabe zugrunde, die bekannte Vorrichtung nach der DE-OS 34 37 190 so weiterzubilden, daß die Vorrichtung bei Verbesserung des dosierten Leimübertrages vereinfacht wird. Die Gefahr von Leimverschmutzungen soll vermindert werden. Zudem soll ein einfacher Zugang zum Leimwerk ermöglicht werden.The invention has for its object to develop the known device according to DE-OS 34 37 190 so that the device is simplified while improving the metered glue transfer. The risk of glue contamination should be reduced. In addition, easy access to the gluing unit should be made possible.

Die Erfindung löst diese Aufgabe mit den kennzeichnenden Merkmalen der Patentansprüche 1, 2, oder 3.The invention solves this problem with the characterizing features of claims 1, 2 or 3.

Die Erfindung bietet den Vorteil, daß eine verbesserte und einfachere dosierte Übertragung des Leims von der Leimauftragswalze auf die zugehörige Riffelwalze erreicht wird. Dadurch, daß die dem Leimwerk zugekehrten Räder der Druckkammern gegenüber der Rückwand der Leimwanne, der von der Leimübertragungsstelle ablaufenden Fläche der Leimauftragswalze oder gegenüber der Unterseite des Leimwerkes abgedichtet sind, wird der dosierte Leimübertrag nicht gestört, weil diese Flächen keinen Leim zur Leimübertragsstelle zuführen. Bildet man in den beiden Druckkammern nach Anspruch 6 noch unterschiedliche Drücke aus, wobei der größere Druck in der an die Anpreßwalze anschließenden Druckkammer herrscht, kann zusätzlich der dosierte Leimübertrag verbessert werden, weil ein Umherwirbeln der Leimteilchen vermindert, damit auch ein Ablagern auf Leim zur Übertragsstelle fördernden Flächen vermieden wird.The invention offers the advantage that an improved and simpler metered transfer of the glue from the glue application roller to the associated corrugating roller is achieved. Characterized in that the wheels of the pressure chambers facing the glue unit against the rear wall of the glue pan, that of the glue transfer point running surface of the glue application roller or sealed against the underside of the glue unit, the metered glue transfer is not disturbed because these surfaces do not feed any glue to the glue transfer point. If different pressures are formed in the two pressure chambers according to claim 6, the greater pressure prevailing in the pressure chamber adjoining the pressure roller, the metered glue transfer can additionally be improved because swirling around of the glue particles is reduced, thus also depositing on glue to the transfer point promoting areas is avoided.

Weitere Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Further refinements of the invention result from the subclaims.

Die Erfindung wird nachfolgend anhand von in der Zeichnung dargestellten Ausführungsbeispielen näher erläutert. In der Zeichnung zeigen:

Fig. 1
eine schematische Seitenansicht einer einseitigen Wellpappenmaschine;
Fig. 2
eine geänderte Ausführungsform gegenüber Fig. 1;
Fig. 3
eine weitere, geänderte Ausführungsform gegenüber Fig. 1;
Fig. 4
ein Teilschnitt zur Erläuterung des Leimübertrages auf die gewellte Bahn.
The invention is explained in more detail below with reference to exemplary embodiments shown in the drawing. The drawing shows:
Fig. 1
a schematic side view of a single-sided corrugated cardboard machine;
Fig. 2
a modified embodiment compared to Fig. 1;
Fig. 3
a further, modified embodiment compared to Fig. 1;
Fig. 4
a partial section to explain the glue transfer to the corrugated web.

Die schematisch in Fig. 1 dargestellte, einseitige Wellpappenmaschine 1 weist eine erste Riffelwalze 2 und eine damit kämmende zweite Riffelwalze 3 auf. Die Riffelwalzen 2, 3 sind in der angegebenen Pfeilrichtung angetrieben. Sie sind hohl ausgebildet, um z.B. mit Dampf beheizt zu werden.The one-sided corrugated cardboard machine 1 shown schematically in FIG. 1 has a first corrugated roller 2 and a second corrugated roller 3 meshing therewith. The corrugated rollers 2, 3 are driven in the direction indicated by the arrow. They are hollow, for example to be heated with steam.

Zwischen den Riffelwalzen 2, 3 wird eine in der angegebenen Pfeilrichtung zulaufende Papierbahn 4 gewellt. Die gewellte Bahn 5 überdeckt den etwa halben Umfangsbereich der Riffelwalze 3.A paper web 4 tapering in the direction of the arrow is corrugated between the corrugating rollers 2, 3. The corrugated web 5 covers approximately half the circumferential area of the corrugating roller 3.

Ein Leimwerk 6 weist eine Leimauftragswalze 7 auf, die in der angegebenen pfeilrichtung rotierbar ist. Sie wird gegen die gewellte Bahn 5 auf der Riffelwalze 3 angestellt und überträgt Leim 8 auf die Scheitel der gewellten Bahn 5.A glue unit 6 has a glue application roller 7 which can be rotated in the direction indicated by the arrow. It is placed against the corrugated web 5 on the corrugating roller 3 and transfers glue 8 to the apex of the corrugated web 5.

Zum Beispiel übernimmt die Leimauftragswalze 7 Leim 8 aus einem Leimbehälter 9. Der Boden 10 des Leimbehälters 9 weist eine Leimdosierwalze 11 auf, die in der angegebenen Pfeilrichtung rotierbar ist. Über den Spalt zwischen der Leimauftragswalze 7 und der Leimdosierwalze 11 wird die Stärke des Leimauftrages bestimmt. Ein Abstreifer 12 dichtet die Leimdosierwalze 11 zum Boden 10 des Leimbehälters 9 hin ab. Zugleich wird hierdurch Leim 8 von der Leimdosierwalze 11 abgestreift. Das Niveau des Leims 8 muß mindestens die Leimdosierwalze 11 übersteigen.For example, the glue application roller 7 takes glue 8 from a glue container 9. The bottom 10 of the glue container 9 has a glue metering roller 11 which can be rotated in the direction indicated by the arrow. The thickness of the glue application is determined via the gap between the glue application roller 7 and the glue metering roller 11. A scraper 12 seals the glue metering roller 11 from the bottom 10 of the glue container 9. At the same time, glue 8 is thereby stripped from the glue metering roller 11. The level of the glue 8 must at least exceed the glue metering roller 11.

Das Leimwerk 6 bestehend aus der Leimauftragswalze 7, der Dosierwalze 11, dem Abstreifer 12 mit Leimbehälter 9, bildet eine Trennwand 14 für zwei Druckkammern, nämlich die untere Druckkammer 16 und die obere Druckkammer 17. Die Druckkammerwand 18 der Druckkammer 16 ist mit der Rückseite des Leimbehälters 9 verbunden. Andererseits ist die Druckkammerwand 18 über eine Dichtung 19, gegenüber der Riffelwalze 2 abgedichtet. Die Druckkammer 16 ist über einen Anschluß 20 an eine nicht dargestellte Überdruckquelle mit dem Druck P 2 angeschlossen. Vorzugsweise findet eine Luftdruckquelle Verwendung.The glue unit 6 consisting of the glue application roller 7, the metering roller 11, the stripper 12 with glue container 9 forms a partition 14 for two pressure chambers, namely the lower pressure chamber 16 and the upper pressure chamber 17. The pressure chamber wall 18 of the pressure chamber 16 is with the back of the Glue container 9 connected. On the other hand, the pressure chamber wall 18 is sealed against the corrugated roller 2 by a seal 19. The pressure chamber 16 is connected via a connection 20 to a pressure source (not shown) with the pressure P 2. An air pressure source is preferably used.

Die Druckkammerwand 21 der Druckkammer 17 ist ebenfalls mit der Rückwand des Leimbehälters 9 fest verbunden. Andererseits ist die Druckkammerwand 21 über eine Dichtung 22 und eine Dichtwalze 23 gegenüber einer Anpreßwalze 24 abgedichtet. Diese drückt eine in der angegebenen Pfeilrichtung zulaufende glatte Papierbahn 25 gegen die mit Leim versehene gewellte Bahn 5. Die entstehende einseitige Wellpappenbahn 26 läuft in der angegebenen Pfeilrichtung aus der einseitigen Wellpappenmaschine 1 aus.The pressure chamber wall 21 of the pressure chamber 17 is also firmly connected to the rear wall of the glue container 9. On the other hand, the pressure chamber wall 21 is sealed against a pressure roller 24 via a seal 22 and a sealing roller 23. This presses a smooth taper in the direction indicated by the arrow Paper web 25 against the corrugated web 5 provided with glue. The resulting one-sided corrugated cardboard web 26 runs out of the single-sided corrugated cardboard machine 1 in the direction indicated by the arrow.

Die Druckkammerwand 21 ist ebenfalls mit einem Anschluß 27 versehen. An diesem ist eine nicht dargestellte Überdruckquelle mit dem Überdruck P 1 angeschlossen. Vorzugsweise findet eine Luftdruckquelle Verwendung.The pressure chamber wall 21 is also provided with a connection 27. An overpressure source (not shown) with the overpressure P 1 is connected to this. An air pressure source is preferably used.

Die Druckkammern 16, 17 üben Drücke P 1 bzw. P 2 auf die Andruckbereiche 28, 29 der gewellten Bahn 5 aus. Dadurch wird die gewellte Bahn 5 auch bei höherer Arbeitsgeschwindigkeit der einseitigen Wellpappenmaschine sicher an die Riffelwalze 3 angedrückt.The pressure chambers 16, 17 exert pressures P 1 and P 2 on the pressure areas 28, 29 of the corrugated web 5. As a result, the corrugated web 5 is pressed securely onto the corrugated roller 3 even at a higher working speed of the single-sided corrugated cardboard machine.

Damit ein noch besseres Andrücken der gewellten Bahn 5 an die Riffelwalze 3 erreicht wird, ist die Riffelwalze 3 in Längsabständen mit nicht dargestellten Ringnuten versehen.So that an even better pressing of the corrugated web 5 against the corrugating roller 3 is achieved, the corrugating roller 3 is provided with longitudinal grooves, not shown, at longitudinal intervals.

Mit diesen Ringnuten kann auch auf der der Leimauftragswalze 7 gegenüberliegenden Seite ein Unterdruckkasten oder in die Ringnuten eingreifende Saugtüllen zusammenwirken. Hierdurch wird ein Unterdruck und damit ein Sog über die Ringnuten auf die Unterseite der gewellten Bahn 5 ausgeübt.A vacuum box or suction grommets engaging in the ring grooves can also interact with these ring grooves on the side opposite the glue application roller 7. As a result, a vacuum and thus a suction is exerted on the underside of the corrugated web 5 via the ring grooves.

Die Drücke P 1 und P 2 können gleich oder unterschiedlich sein. Vorzugsweise ist der Druck P 1 größer als der Druck P 2. Hierdurch wird ein Verspritzen von Leim beim Leimübertrag verringert, was noch erläutert wird.The pressures P 1 and P 2 can be the same or different. The pressure P 1 is preferably greater than the pressure P 2. This reduces the splashing of glue during the glue transfer, which will be explained later.

Bei der Ausführungsform nach Fig. 2 ist lediglich geändert, daß die Druckkammerwand 21 nicht an die Rückwand des Leimbehälters 9 angeschlossen ist, sondern über eine Dichtung 30 gegenüber der Leimauftragswalze 7 abgedichtet ist. Diese Dichtung 30 kann als Rinne zur Aufnahme und Ableitung des von der Leimauftragswalze 7 abgestreiften Leims dienen.In the embodiment according to FIG. 2, the only change is that the pressure chamber wall 21 is not connected to the rear wall of the glue container 9, but is sealed against the glue application roller 7 via a seal 30. This seal 30 can serve as a channel for receiving and discharging the glue stripped from the glue application roller 7.

Bei der Ausführungsform nach Fig. 3 ist die Druckkammerwand 18 bzw. 21 gegenüber der Trennwand 14 abdichtend ausgebildet. Vorzugsweise ist die Druckkammerwand 18 über eine Dichtung 31 gegenüber der Dosierwalze 11 abgedichtet.In the embodiment according to FIG. 3, the pressure chamber wall 18 or 21 is designed to seal against the partition wall 14. The pressure chamber wall 18 is preferably sealed off from the metering roller 11 by a seal 31.

Die Abdichtung 30, die vorzugsweise als Dichtspalt ausgebildet ist, und die Abdichtung 31 sind dabei so angeordnet, daß sie mit dem Scheitel der Leimauftragswalze 7 bzw. der Leimdosierwalze 11 zusammenarbeiten, derart, daß das Leimwerk 6 in der angegebenen Pfeilrichtung getrennt von den Druckkammern 16 bzw. 17 verschiebbar ist. Die Druckkammern 16, 17 selbst können gleichfalls in den angegebenen Pfeilrichtungen verschiebbar ausgebildet sein.The seal 30, which is preferably designed as a sealing gap, and the seal 31 are arranged so that they cooperate with the apex of the glue application roller 7 or the glue metering roller 11, such that the glue unit 6 is separated from the pressure chambers 16 in the direction indicated by the arrow or 17 is displaceable. The pressure chambers 16, 17 themselves can also be designed to be displaceable in the indicated arrow directions.

Bei der Ausführung nach Fig. 1 ist die Einheit aus Leimwerk 6 und Druckkammern 16, 17 nur zusammen in der angegebenen Pfeilrichtung verschiebbar.1, the unit consisting of glue unit 6 and pressure chambers 16, 17 can only be moved together in the direction of the arrow indicated.

Bei der Ausführung nach Fig. 2 ist die Einheit aus Leimwerk 6 und Druckkammer 16 zusammen in der angegebenen Pfeilrichtung verschiebbar.In the embodiment according to FIG. 2, the unit comprising the glue unit 6 and the pressure chamber 16 can be moved together in the direction of the arrow indicated.

Bei der Ausführung nach Fig. 3 kann das Leimwerk 6, sowie die Druckkammern 16, 17 unabhängig voneinander verschoben werden.3, the gluing unit 6 and the pressure chambers 16, 17 can be moved independently of one another.

Wie aus Fig. 4 ersichtlich, ist die Riffelwalze 3 in der angegebenen Pfeilrichtung angetrieben. Sie ist mit der gewellten Papierbahn 5 belegt.As can be seen from FIG. 4, the corrugated roller 3 is driven in the direction indicated by the arrow. It is covered with the corrugated paper web 5.

Die gegen die Riffelwalze 3 angestellte Leimauftragswalze 7 wird in der angegebenen Pfeilrichtung mit Schlupf angetrieben. Die von der Leimauftragswalze 7 mitgenommene Leimschicht 32 wird durch die ersten mit der gewellten Bahn 5 bedeckten Zähne der Riffelwalze 3 eingedrückt und infolge des Schlupfs zusammengeschoben. Die Zähne der Riffelwalze 3 schließen dabei mit der Leimauftragswalze 7 Längskammern mit dem Überdruck P 2 ein. Im Auslauf bilden sich zwischen den Zähnen der Riffelwalze 3 und der Leimauftragswalze 7 Leimbrücken 33, die schließlich unter Wirkung des höheren Druckes P 1 gegenüber dem Druck P 2 zerreißen. Infolge des durch die Druckunterschiede bedingten Eindrückens der Brücken 33 tritt eine verringerte Anzahl von abgeschleuderten Leimtropfen 34 auf.The glue application roller 7 set against the corrugating roller 3 is driven with slip in the direction indicated by the arrow. The glue layer 32 carried along by the glue application roller 7 is pressed in by the first teeth of the corrugated roller 3 covered with the corrugated web 5 and pushed together as a result of the slippage. The teeth of the corrugated roller 3 also close the glue application roller 7 longitudinal chambers with the overpressure P 2. In the outlet, glue bridges 33 form between the teeth of the corrugated roller 3 and the glue application roller 7, which finally tear under the effect of the higher pressure P 1 compared to the pressure P 2. As a result of the bridges 33 being pressed in due to the pressure differences, a reduced number of thrown off glue drops 34 occurs.

Die unterschiedlichen Drücke P 1, P 2 in den Kammern 16, 17 können auch dadurch eingestellt werden, daß eine Druckquelle über einstellbare Drosselventile mit den Anschlüssen 20 bzw. 27 der Kammern 16, 17 verbunden ist.The different pressures P 1, P 2 in the chambers 16, 17 can also be set in that a pressure source is connected to the connections 20 and 27 of the chambers 16, 17 via adjustable throttle valves.

Claims (7)

  1. Machine for making cardboard corrugated on one side, comprising:
    - two corrugated rolls which corrugate a web,
    - a sizing unit for applying size to the corrugated web and including a size applicator roll which cooperates with one corrugated roll, a size dispenser and a size container,
    - a contact roll which presses a covering web against the sized, corrugated web,
    - two pressure chambers, arranged at either side of the size applicator roll and sealed by a respective one of their edges from one corrugated roll, or contact roll, and sealed by their other edges from the sizing unit,
    - connections for overpressure sources on the pressure chambers, in order to press the corrugated web onto the corrugated roll using overpressure,
    characterised in that
    the pressure chamber walls (18, 21) of both pressure chambers (16, 17) are imperviously joined to the rear wall of the size container (9).
  2. Machine for making cardboard corrugated on one side, comprising:
    - two corrugated rolls which corrugate a web,
    - a sizing unit for applying size to the corrugated web and including a size applicator roll which cooperates with one corrugated roll, a size dispenser and a size container,
    - a contact roll which presses a covering web against the sized, corrugated web,
    - two pressure chambers, arranged at either side of the size applicator roll and sealed by a respective one of their edges from one corrugated roll, or contact roll, and sealed by their other edges from the sizing unit,
    - connections for overpressure sources on the pressure chambers, in order to press the corrugated web onto the corrugated roll using overpressure,
    characterised in that
    the pressure chamber wall (18) of one pressure chamber (16) which is sealed from the upper corrugated roll (2) is imperviously joined to the rear wall of the size container (9), whereas the pressure chamber wall (21) of the other pressure chamber (17) is joined by means of a seal (30) to the surface of the size applicator roll (7) that runs from the size application point.
  3. Machine for making cardboard corrugated on one side, comprising:
    - two corrugated rolls which corrugate a web,
    - a sizing unit for applying size to the corrugated web and including a size applicator roll which cooperates with one corrugated roll, a size dispenser and a size container,
    - a contact roll which presses a covering web against the sized, corrugated web,
    - two pressure chambers, arranged at either side of the size applicator roll and sealed by a respective one of their edges from one corrugated roll, or contact roll, and sealed by their other edges from the sizing unit,
    - connections for overpressure sources on the pressure chambers, in order to press the corrugated web onto the corrugated roll using overpressure,
    characterised in that the pressure chamber wall (18) of one pressure chamber (16) which is sealed from the upper corrugated roll (2) is imperviously joined by means of a seal (31) to the lower face of the sizing unit (6) and that the pressure chamber wall (21) of the other pressure chamber (17) is joined by means of a seal (30) to the surface of the size applicator roll (7) that runs from the size application point.
  4. Machine according to claim 2 or 3,
    characterised in that the seal (30) which is in contact with the size applicator roll (7) is grooved to receive and conduct size.
  5. Machine according to claim 1, 2 or 3,
    characterised in that the sizing unit (6) and the pressure chambers (16, 17) are adapted to be pushed in and out together or individually.
  6. Machine according to claim 1, 2 or 3,
    characterised in that the pressure chamber (17) adjoining the contact roll (1) exhibits a higher pressure P1 than the other pressure chamber (16) at pressure P2.
  7. Machine according to claims 1, 2 or 3,
    characterised in that the corrugated roll (3) which cooperates with the size applicator roll (7) incorporates spaced annular grooves.
EP19910111953 1991-07-17 1991-07-17 Device for making single-faces corrugated paper Expired - Lifetime EP0523264B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE91111953T DE59100468D1 (en) 1991-07-17 1991-07-17 Device for producing single-sided corrugated cardboard.
EP19910111953 EP0523264B1 (en) 1991-07-17 1991-07-17 Device for making single-faces corrugated paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19910111953 EP0523264B1 (en) 1991-07-17 1991-07-17 Device for making single-faces corrugated paper

Publications (2)

Publication Number Publication Date
EP0523264A1 EP0523264A1 (en) 1993-01-20
EP0523264B1 true EP0523264B1 (en) 1993-10-06

Family

ID=8206937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910111953 Expired - Lifetime EP0523264B1 (en) 1991-07-17 1991-07-17 Device for making single-faces corrugated paper

Country Status (2)

Country Link
EP (1) EP0523264B1 (en)
DE (1) DE59100468D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103144355A (en) * 2013-03-18 2013-06-12 无锡裕泰包装机械科技有限公司 Gluing and glue mixing mechanism of single-sided corrugator

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103465522B (en) * 2013-09-16 2015-11-18 广东万联包装机械有限公司 A kind of shaping auxiliary body of corrugated paper of Corrugating Machine
CN105965965B (en) * 2016-07-06 2018-07-20 广东肇庆西江机械制造有限公司 A kind of roll body automatic safety device with detection function

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR889394A (en) * 1939-04-06 1944-01-07 Munters Ind Aktiebolag Method and apparatus for producing a thin sheet material, usable in the making of packaging, and other applications
FR1467195A (en) * 1965-12-15 1967-01-27 Creusot Forges Ateliers Corrugated Cardboard Making Apparatus
DE3437190A1 (en) * 1984-10-10 1986-04-10 Werner H.K. Peters Maschinenfabrik Gmbh, 2000 Hamburg Single-sided corrugated-board machine
DE8909841U1 (en) * 1989-08-17 1989-10-05 BHS-Bayerische Berg-, Hütten- und Salzwerke AG, 8000 München Device for producing corrugated cardboard

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103144355A (en) * 2013-03-18 2013-06-12 无锡裕泰包装机械科技有限公司 Gluing and glue mixing mechanism of single-sided corrugator

Also Published As

Publication number Publication date
DE59100468D1 (en) 1993-11-11
EP0523264A1 (en) 1993-01-20

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