EP0687553A2 - Device for production of a corrugated board with at least one side being covered - Google Patents

Device for production of a corrugated board with at least one side being covered Download PDF

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Publication number
EP0687553A2
EP0687553A2 EP95108869A EP95108869A EP0687553A2 EP 0687553 A2 EP0687553 A2 EP 0687553A2 EP 95108869 A EP95108869 A EP 95108869A EP 95108869 A EP95108869 A EP 95108869A EP 0687553 A2 EP0687553 A2 EP 0687553A2
Authority
EP
European Patent Office
Prior art keywords
pressure
machine according
roller
web
corrugated
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
EP95108869A
Other languages
German (de)
French (fr)
Other versions
EP0687553A3 (en
EP0687553B1 (en
Inventor
Andreas Knorr
Josef Puff
Reinhard Sternitzke
Hermann-Josef Mensing
Heribert Reich
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 Corrugated Maschinen und Anlagenbau GmbH
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 BHS Corrugated Maschinen und Anlagenbau GmbH filed Critical BHS Corrugated Maschinen und Anlagenbau GmbH
Publication of EP0687553A2 publication Critical patent/EP0687553A2/en
Publication of EP0687553A3 publication Critical patent/EP0687553A3/en
Application granted granted Critical
Publication of EP0687553B1 publication Critical patent/EP0687553B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B31F1/2877—Pressing means for bringing facer sheet and corrugated webs into contact or keeping them in contact, e.g. rolls, belts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1025—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina to form undulated to corrugated sheet and securing to base with parts of shaped areas out of contact

Definitions

  • the invention relates to a machine according to the preamble of claim 1.
  • EP 0 492 310 A1 Such a machine is known from EP 0 492 310 A1.
  • the corrugated cardboard webs produced on such machines are between 1.2 and 2.8 m and usually 2.5 m wide. There are therefore considerable difficulties in achieving a uniform contact pressure over the full width of the corrugated cardboard web by the circulating endless pressure belt, since the deflection roller bends.
  • EP 0 492 310 A1 therefore provides for the deflection roller to be spherical in order to compensate for the deflection of the deflection roller. The effort for this is considerable.
  • the pressure band is subjected to torsional effects.
  • the replacement of a damaged pressure belt is extremely time-consuming and costly.
  • At least one deflecting roller is mounted in bearings, each of which can be displaced by means of a tensioning drive formed by a piston-cylinder drive.
  • the invention has for its object to develop a machine of the generic type so that the pressing of the liner to the corrugated paper web in the pressing area takes place in a particularly simple and reliable manner.
  • the at least one pressure belt is arranged essentially stationary in the machine, so it does not run around with the laminating web. This saves considerable design effort. Because the at least one pressure band is essentially stationary, the tensioning devices can be designed in a particularly simple manner. Adaptation to different widths of the corrugated cardboard web to be produced can also be implemented in a very simple manner.
  • the machine shown in FIGS. 1 to 3 has a machine frame 1 which has two mutually parallel, spaced-apart side walls 2, 3.
  • a lower corrugated roller 4 is rotatably supported in each case in a rocker 6 designed as a double lever by means of shaft journals 5.
  • the rockers 6 are in turn mounted at one end at a distance from the axis of rotation 7 of the lower corrugating roller 4 by means of a respective pivot bearing 8 in the side walls 2 and 3 of the machine frame 1.
  • the rockers 6 are each supported with respect to the machine frame 1 by means of a feed and pressure drive 10, which is each designed as a hydraulically actuatable piston-cylinder drive.
  • the hollow lower corrugated roller 4 can be heated by means of steam, which is supplied in accordance with the directional arrow 11; Condensate is discharged according to the directional arrow 12.
  • an upper corrugating roller 13 is rotatably mounted in the side walls 2, 3 of the machine frame 1 by means of shaft journals 14, 15.
  • the upper corrugated roller 13 is driven in rotation about its axis of rotation 16 by means of a drive motor, not shown, via the shaft journal 14.
  • the upper corrugated roller 13 is also heatable, which is indicated by a direction arrow 17 for steam and a direction arrow 18 for condensate.
  • the lower corrugating roller 4 and the upper corrugating roller 13 are provided on their cylinder surfaces with corrugations 19, 20 which extend parallel to the axes of rotation 7, 16 and mesh with one another in the contact area 21 of the two corrugating rollers 4, 13.
  • the upper corrugating roller 13 is driven in the direction of rotation 22, whereby the freely rotatably mounted lower corrugating roller 4 is carried in the direction of rotation 23.
  • a glue application device 24 is arranged in the machine frame 1 downstream of the contact area 21 in the direction of rotation 22 and 23, which has a glue application roller 25 which can be set against the corrugation 20 of the upper corrugation roller 13 is.
  • the glue application roller 25 is rotatably mounted about an axis of rotation 26. It is driven by a motor, not shown.
  • the glue application device 24 also has a glue pan 27 into which the glue application roller 25 is immersed for receiving glue.
  • a glue roller 28 is also assigned to the glue application roller 25, which serves to leave only a thin film of glue on the surface of the glue application roller 25
  • a deflection roller 29 is freely rotatable about an axis of rotation 30 in the side walls 2, 3 of the machine frame 1.
  • a pressure device 31 is arranged above the upper corrugating roller 13 and has a belt holder 32 which is arranged between the deflecting roller 29 and the upper corrugating roller 13 and is fixed to the side walls 2, 3 of the machine frame 1.
  • a belt holder 32 which is arranged between the deflecting roller 29 and the upper corrugating roller 13 and is fixed to the side walls 2, 3 of the machine frame 1.
  • individual contact belts 33 are fastened seamlessly next to one another and extend from the belt holder 32 in the direction of rotation 22 of the upper corrugating roller 13, namely by a circumferential angle ⁇ which is approximately 90 to 120 °.
  • a tensioning device 35 engages, which is formed in each case by a hydraulically actuatable piston-cylinder drive.
  • All cylinders 36 are attached to a support beam 37, which in turn is fastened to the side walls 2, 3 by means of screws 38 which pass through elongated holes 39 in the support beam 37 which extend in the longitudinal direction of the support beam 37.
  • the length b of these elongated holes 39 is greater than half the width c of a pressure belt 33.
  • a fastening piece 41 is attached, to which the free end 34 of the respective pressure belt 33 is fastened.
  • the pressure bands 33 consist of thin steel, for example spring steel, of a suitable plastic, of a steel mesh or a material with a ceramic coating. In any case, it is expedient if the pressure tapes 33 are permeable to air, ie steel or plastic tapes are provided with a perforation.
  • a second preheating roller 42 is mounted in bearings 43 so as to be rotatable about an axis of rotation 44.
  • the bearings 43 are attached to the side walls 2, 3 of the machine frame 1.
  • This 2nd preheating roller 42 is preceded by a 1st preheating roller 45 which is rotatably mounted about an axis of rotation 46 in bearings 47 which are also fastened to the side walls 2, 3 of the machine frame 1.
  • a stationary, rotatable guide roller 48 is arranged between the 1st preheating roller 45 and the 2nd preheating roller 42.
  • each preheating roller 42 or 45 is assigned a guide roller 49 or 50 which can be adjusted about the respective axis of rotation 44 or 46.
  • the preheating rollers 42, 45 and the deflection roller 29 can be heated in the same way as the corrugating rollers 4, 13.
  • the upper corrugated roller 13 is followed by a guide roller 51 and a pull-out device 51a in the direction of rotation 22.
  • a pressure device 52 is provided above the upper corrugating roller 13. It has an approximately concentric to the axis of rotation 16 of the upper corrugating roller, which extends over the full length of the upper corrugating roller 13 and has a mounting bracket 53 which is fixed in fixedly mounted in the machine frame 1 abutments 54, 55 and can be removed easily.
  • a pressure band 56 made of flexible material, for example rubber or plastic or thin steel sheet or the like. attached, an airtight pressure chamber between the pressure band 56 and the partially cylindrical support bracket 53 57 is limited.
  • a pressure connection 58 for compressed air or pressure fluid opens into this pressure chamber 57 through the support bracket 53.
  • the second preheating roller 42 ' is not mounted in bearings fixed to the machine frame, but in rockers 59 designed as double levers, one end of which is mounted on each side wall 2 or 3 of the machine frame 1 by means of a pivot bearing 60 is.
  • the other end 61 of each rocker 59 is connected to the machine frame 1 via a feed drive 62.
  • These feed drives 62 are designed as hydraulically actuatable piston-cylinder drives, the cylinders 63 of which are pivotably mounted on the respective side wall 2 or 3, while their piston rod 64 acts on the end 61 of the respective rocker 59.
  • FIG. 6 shows a pressing device 52 ′ which is modified compared to FIGS. 4 and 5, in partial section. It also has a support bracket 53 which is provided with undercut grooves 65 running parallel to the axis of rotation 16. In these grooves 65, pressure segments 66 are fastened next to one another by means of fastening pins 67 with a T-shaped cross section.
  • the pressure segments 66 have a base plate 68 which is bent in the form of a part circle and to which the fastening pins 67 are attached.
  • a bellows-like pressure body 69 Arranged on the base plate 68 as a clamping device is a bellows-like pressure body 69 which has an inner pressure chamber 70 connected to a pressure connection 58 '.
  • a pressure band 71 is attached to the side of the elongated pressure body 69 facing the upper corrugating roller 13.
  • the pressure body 69 serving as a pressing element consists of an elastic material, for example rubber or the like. If its pressure chamber 70 is not pressurized, then the pressure belt 71, as shown in FIG. 6, is located on the left at a distance from the corrugation 20 of the upper corrugating roller 13. If, on the other hand, the pressure chambers 70 of the pressure body 69 are acted upon by pressure medium, then the pressure body 69 expands, as a result of which the pressure band 71 is advanced against the corrugation 20, as indicated in the center and right in FIG. 6.
  • a paper web 72 enters the contact area 21 between the lower corrugating roller 4 and the upper corrugating roller 13 and is provided with a corrugation 73 by the corrugations 19, 20.
  • the tips 74 of the respective corrugation 73 are provided with glue in the glue application device 24.
  • the other areas of the corrugated paper web 72 are not glued.
  • a laminating web 75 is fed, which is also made of paper and has the same width as the paper web 72.
  • the deflection roller 29 is located between the 2nd preheating roller 42 or 42 'and the upper corrugating roller 13
  • the side of the laminating web 75 which is particularly intensively preheated by the 2nd preheating roller 42 or 42' passes into one of the Paper web 72 facing position, ie the side of the laminating web 75 preheated on the second preheating roller 42 or 42 ′ comes to bear against the glued tips 74 of the paper web 72.
  • the laminating web 75 is in the pressing device 31 or 52 or 52 'pressed firmly against the glued tips 74 of the corrugated paper web 72.
  • the pressure tapes 33 or the pressure tape 56 or the pressure tapes 71 exert the required contact pressure on the laminating web 75.
  • the laminating web 75 is preheated in the manner described and since the upper corrugating roller 13 is heated, on the way over the circumferential angle a on the upper corrugating roller 13 there is a fixed gluing between the laminating web 75 and the corrugated paper web 72.
  • the finished glued, one-sided corrugated cardboard web 76 laminated with a liner web 75 runs out of the machine in a withdrawal direction corresponding to the transport direction 77 of the webs 72, 75. If, in the embodiment according to FIGS. 4 and 5 or 6, the pressing device 52 or 52 'is removed from the machine, then the second preheating roller 42' is pivoted towards the upper corrugating roller 13 and acts as a pressing roller.
  • the pressure belts 33 and 71 can be controlled individually, i.e. each clamping device 35 or each pressure body 69 serving as a pressing element can be controlled individually. Basically, the contact pressure can be controlled as a function of the temperature of the incoming or outgoing liner web 75 in order to avoid excessive heating of the liner web 75.
  • the air-permeable design of the pressure belts 33 and 71 also serves this purpose. If the width d of the paper web 72 and the liner web 75 is smaller than the length e of the upper corrugating roller 13, which is indicated in FIG. 1, then the pressure belts 33 that are not required become brought out of engagement with the corrugated roller 13 by not acting on their tensioning devices 35 in the position shown in broken lines in FIGS. 2 and 3.
  • the protrusion of pressure tapes 33 and 71 over the paper web 72 and laminating web 75 can be achieved by the adjustability of the support beam 37 carrying the tensioning devices 35 and a corresponding adjustability of the tape holder 32 in the direction 79 by half a width c of the pressure tapes 33.
  • the lateral protrusion of a pressure belt 33 or 71 over paper web 72 and the liner web 75 is smaller than half the width c if, in addition, the unneeded tensioning devices 35, 69 are not actuated.
  • the position of the lower corrugating roller 4 relative to the upper corrugating roller 13 is not mandatory.
  • the preheating rollers 42, 42 'and 45 can also change their position relative to the upper corrugating roller 13. Only the position of the glue application device 24 relative to the upper corrugating roller 13 is predetermined.
  • the mutually adjacent edges 78 of adjacent pressure bands 33 and 71 can be corrugated, for example in accordance with a sine wave.
  • the edges 78 ' run obliquely to the transport direction 77 of the webs 72, 75.
  • formed holes 80 are shown, which make the respective pressure band 33 or 71 air-permeable.
  • the pressure tapes 33 and 71 have a width c below 2oo mm and preferably in the range from 50 to 200 mm.
  • the laminating web 75 is fed via the 1st preheating roller 45, the adjustable guide roller 50, the stationary guide roller 48 directly above the deflecting roller 29 to the 1st preheating roller 45 serving as the pressure roller and into the contact area inserted between the upper corrugating roller 13 and the roller 42.
  • the laminating web 75 is also glued between the preheating roller 42, which then serves as the pressure roller 42, and the corrugated roller 13 with the corrugated paper web 72 and runs in the transport direction 72 to the pull-out device 51a.
  • the deflection roller 29 is not wrapped around here.

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

Abstract

The machine has two ripple rollers (4,13) for producing ripples (73) on a paper board (72). A glue applicator (24) applicates glue on the peaks (74) of the ripples and a pressing device presses a board (75) onto the glued peaks. The machine's pressure unit has at least one stationary endless pressure belt (33), and may have several belts next to each other over the maximum width (d) of the paperboard web (76). A separate tensioning device (35) is allocated to each pressure belt, and the belts are mounted on a common holder. The tensioning device is formed by a linear actuator engaging with one end of the respective pressure belt. <IMAGE>

Description

Die Erfindung betrifft eine Maschine nach dem Oberbegriff des Anspruches 1.The invention relates to a machine according to the preamble of claim 1.

Eine derartige Maschine ist aus der EP 0 492 310 A1 bekannt. Die auf derartigen Maschinen hergestellten Wellpappebahnen sind zwischen 1,2 und 2,8 m und üblicherweise 2,5 m breit. Es bestehen daher beträchtliche Schwierigkeiten, über die volle Breite der Wellpappebahn eine gleichmäßige Anpressung durch das umlaufende endlose Anpreßband zu erreichen, da sich die Umlenkwalze durchbiegt. In der EP 0 492 310 A1 ist daher vorgesehen, die Umlenkwalze ballig auszuführen, um so die Durchbiegung der Umlenkwalze zu kompensieren. Der Aufwand hierfür ist beträchtlich. Es kommt hinzu, daß das Anpreßband hierbei Torsionseffekten unterworfen wird. Weiterhin ist das Auswechseln eines beschädigten Anpreßbandes außerordentlich zeit- und kostenaufwendig. Mindestens eine Umlenkwalze ist in Lagern gelagert, die jeweils mittels eines durch einen Kolben-Zylinder-Antrieb gebildeten Spannantriebs verschiebbar sind.Such a machine is known from EP 0 492 310 A1. The corrugated cardboard webs produced on such machines are between 1.2 and 2.8 m and usually 2.5 m wide. There are therefore considerable difficulties in achieving a uniform contact pressure over the full width of the corrugated cardboard web by the circulating endless pressure belt, since the deflection roller bends. EP 0 492 310 A1 therefore provides for the deflection roller to be spherical in order to compensate for the deflection of the deflection roller. The effort for this is considerable. In addition, the pressure band is subjected to torsional effects. Furthermore, the replacement of a damaged pressure belt is extremely time-consuming and costly. At least one deflecting roller is mounted in bearings, each of which can be displaced by means of a tensioning drive formed by a piston-cylinder drive.

Aus der EP 0 104 372 B1 ist es bekannt, ein endlos umlaufendes Anpreßband mittels eines Druckluftpolsters im Anpreßbereich gegen die Riffelwalze zu drücken.From EP 0 104 372 B1 it is known to press an endlessly rotating pressure belt against the corrugated roller by means of a compressed air cushion in the pressure area.

Der Erfindung liegt die Aufgabe zugrunde, eine Maschine der gattungsgemäßen Art so weiterzubilden, daß das Anpressen der Kaschierbahn an die gewellte Papierbahn im Anpreßbereich auf besonders einfache und zuverlässige Weise erfolgt.The invention has for its object to develop a machine of the generic type so that the pressing of the liner to the corrugated paper web in the pressing area takes place in a particularly simple and reliable manner.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale im Kennzeichnungsteil des Anspruches 1 gelöst. Das mindestens eine Anpreßband ist im wesentlichen ortsfest in der Maschine angeordnet, läuft also nicht mit der Kaschierbahn um. Dadurch wird erheblicher konstruktiver Aufwand gespart. Dadurch daß das mindestens eine Anpreßband im wesentlichen ortsfest ist, lassen sich die Spann-Einrichtungen in besonders einfacher Weise ausbilden. Auch eine Anpassung an unterschiedliche Breiten der zu erzeugenden Wellpappebahn ist in sehr einfacher Weise realisierbar.This object is achieved by the features in the characterizing part of claim 1. The at least one pressure belt is arranged essentially stationary in the machine, so it does not run around with the laminating web. This saves considerable design effort. Because the at least one pressure band is essentially stationary, the tensioning devices can be designed in a particularly simple manner. Adaptation to different widths of the corrugated cardboard web to be produced can also be implemented in a very simple manner.

Vorteilhafte und zum Teil erfinderische Ausgestaltungen ergeben sich aus den Unteransprüchen.Advantageous and partly inventive configurations result from the subclaims.

Weitere Merkmale, Vorteile und Einzelheiten der Erfindung ergeben sich aus der Beschreibung von Ausführungsbeispielen anhand der Zeichnung. Es zeigt

Fig. 1
eine Maschine zur Herstellung einer einseitig kaschierten Wellpappebahn in einer Frontansicht gemaß dem Sichtpfeil I in Fig. 2,
Fig. 2
einen vertikalen Querschnitt durch die Maschine gemäß der Schnittlinie II-II in Fig. 1,
Fig. 3
einen Teilausschnitt aus Fig. 2 in gegenüber Fig. 2 vergrößertem Maßstab,
Fig. 4
eine abgewandelte Ausführungsform der Maschine in vertikalem Querschnitt in einer Fig. 2 entsprechenden Darstellung,
Fig. 5
einen Teil-Querschnitt durch die Maschine gemäß der Schnittlinie V-V in Fig. 4,
Fig. 6
eine abgewandelte Ausführungsform der Maschine nach Fig. 4 in einer Fig. 5 entsprechenden Darstellung,
Fig. 7
mehrere Anpreßbänder in Draufsicht und
Fig. 8
eine Draufsicht auf mehrere gegenüber Fig. 7 abgewandelte Anpreßbänder.
Further features, advantages and details of the invention result from the description of exemplary embodiments with reference to the drawing. It shows
Fig. 1
a machine for producing a single-sided laminated corrugated cardboard web in a front view according to the arrow I in Fig. 2,
Fig. 2
a vertical cross section through the machine according to section line II-II in Fig. 1,
Fig. 3
3 a partial section from FIG. 2 on an enlarged scale compared to FIG. 2,
Fig. 4
3 shows a modified embodiment of the machine in vertical cross section in a representation corresponding to FIG. 2,
Fig. 5
4 shows a partial cross section through the machine according to the section line VV in FIG. 4,
Fig. 6
4 shows a modified embodiment of the machine according to FIG. 4 in a representation corresponding to FIG. 5,
Fig. 7
several pressure tapes in top view and
Fig. 8
a plan view of a plurality of pressure tapes modified compared to FIG. 7.

Die in den Fig. 1 bis 3 dargestellte Maschine weist ein Maschinengestell 1 auf, das zwei zueinander parallele, voneinander beabstandete Seitenwände 2, 3 aufweist. Eine untere Riffelwalze 4 ist mittels Wellenzapfen 5 jeweils in einer als Doppelhebel ausgebildeten Schwinge 6 drehbar gelagert. Die Schwingen 6 sind wiederum mit einem Ende im Abstand von der Drehachse 7 der unteren Riffelwalze 4 mittels jeweils eines Schwenklagers 8 in den Seitenwänden 2 und 3 des Maschinengestells 1 gelagert. An ihrem dem Schwenklager 8 abgewandten Ende 9 sind die Schwingen 6 jeweils über einen Zustell- und Anpreß-Antrieb 10, der jeweils als hydraulisch beaufschlagbarer Kolben-Zylinder-Antrieb ausgebildet ist, gegenüber dem Maschinengestell 1 abgestützt. Die hohl ausgebildete untere Riffelwalze 4 ist mittels Dampf beheizbar, der entsprechend dem Richtungspfeil 11 zugeführt wird; Kondensat wird gemäß dem Richtungspfeil 12 abgeführt.The machine shown in FIGS. 1 to 3 has a machine frame 1 which has two mutually parallel, spaced-apart side walls 2, 3. A lower corrugated roller 4 is rotatably supported in each case in a rocker 6 designed as a double lever by means of shaft journals 5. The rockers 6 are in turn mounted at one end at a distance from the axis of rotation 7 of the lower corrugating roller 4 by means of a respective pivot bearing 8 in the side walls 2 and 3 of the machine frame 1. At their end 9 facing away from the pivot bearing 8, the rockers 6 are each supported with respect to the machine frame 1 by means of a feed and pressure drive 10, which is each designed as a hydraulically actuatable piston-cylinder drive. The hollow lower corrugated roller 4 can be heated by means of steam, which is supplied in accordance with the directional arrow 11; Condensate is discharged according to the directional arrow 12.

Oberhalb der unteren Riffelwalze 4 ist eine obere Riffelwalze 13 mittels Wellenzapfen 14, 15 in den Seitenwänden 2, 3 des Maschinengestells 1 drehbar gelagert. Der Drehantrieb der oberen Riffelwalze 13 um ihre Drehachse 16 erfolgt mittels eines nicht dargestellten Antriebsmotors über den Wellenzapfen 14. Auch die obere Riffelwalze 13 ist beheizbar, was durch einen Richtungspeil 17 für Dampf und einen Richtungspfeil 18 für Kondensat angedeutet wird.Above the lower corrugating roller 4, an upper corrugating roller 13 is rotatably mounted in the side walls 2, 3 of the machine frame 1 by means of shaft journals 14, 15. The upper corrugated roller 13 is driven in rotation about its axis of rotation 16 by means of a drive motor, not shown, via the shaft journal 14. The upper corrugated roller 13 is also heatable, which is indicated by a direction arrow 17 for steam and a direction arrow 18 for condensate.

Die untere Riffelwalze 4 und die obere Riffelwalze 13 sind an ihren Zylinderoberflächen mit sich parallel zu den Drehachsen 7, 16 erstreckenden Riffelungen 19, 20 versehen, die im Berührungsbereich 21 der beiden Riffelwalzen 4, 13 miteinander kämmen. Die obere Riffelwalze 13 wird in Drehrichtung 22 angetrieben, wodurch die frei drehbar gelagerte untere Riffelwalze 4 in Drehrichtung 23 mitgenommen wird. In Drehrichtung 22 bzw. 23 dem Berührungsbereich 21 nachgeordnet ist eine Leimauftragseinrichtung 24 im Maschinengestell 1 angeordnet, die eine Leimauftragswalze 25 aufweist, die gegen die Riffelung 20 der oberen Riffelwalze 13 zustellbar ist. Die Leimauftragswalze 25 ist um eine Drehachse 26 drehbar gelagert. Sie wird mittels eines nicht dargestellten Motors angetrieben. Die Leimauftragseinrichtung 24 weist weiterhin eine Leimwanne 27 auf, in die die Leimauftragswalze 25 zur Aufnahme von Leim eintaucht. Der Leimauftragswalze 25 ist weiterhin eine Quetschwalze 28 zugeordnet, die dazu dient, lediglich einen dünnen Leimfilm auf der Oberfläche der Leimauftragswalze 25 zu belassen.The lower corrugating roller 4 and the upper corrugating roller 13 are provided on their cylinder surfaces with corrugations 19, 20 which extend parallel to the axes of rotation 7, 16 and mesh with one another in the contact area 21 of the two corrugating rollers 4, 13. The upper corrugating roller 13 is driven in the direction of rotation 22, whereby the freely rotatably mounted lower corrugating roller 4 is carried in the direction of rotation 23. A glue application device 24 is arranged in the machine frame 1 downstream of the contact area 21 in the direction of rotation 22 and 23, which has a glue application roller 25 which can be set against the corrugation 20 of the upper corrugation roller 13 is. The glue application roller 25 is rotatably mounted about an axis of rotation 26. It is driven by a motor, not shown. The glue application device 24 also has a glue pan 27 into which the glue application roller 25 is immersed for receiving glue. A glue roller 28 is also assigned to the glue application roller 25, which serves to leave only a thin film of glue on the surface of the glue application roller 25.

Oberhalb der Leimauftragswalze 25 ist in den Seitenwänden 2, 3 des Maschinengestells 1 eine Umlenkwalze 29 um eine Drehachse 30 frei drehbar gelagert.Above the glue application roller 25, a deflection roller 29 is freely rotatable about an axis of rotation 30 in the side walls 2, 3 of the machine frame 1.

Oberhalb der oberen Riffelwalze 13 ist eine Anpreß-Einrichtung 31 angeordnet, die einen zwischen der Umlenkwalze 29 und der oberen Riffelwalze 13 angeordneten, an den Seitenwänden 2, 3 des Maschinengestells 1 festgelegten Bandhalter 32 aufweist. An diesem balkenartigen Bandhalter 32 sind fugenlos nebeneinander einzelne Anpreßbänder 33 befestigt, die sich ausgehend von dem Bandhalter 32 in Drehrichtung 22 der oberen Riffelwalze 13 erstrecken, und zwar um einen Umfangswinkel a, der etwa 90 bis 120° beträgt. An jedem dem Bandhalter 32 entgegengesetzten Ende 34 eines Anpreßbandes 33 greift eine Spann-Einrichtung 35 an, die jeweils durch einen hydraulisch beaufschlagbaren Kolben-Zylinder-Antrieb gebildet ist. Sämtliche Zylinder 36 sind an einem Tragbalken 37 angebracht, der wiederum an den Seitenwänden 2, 3 mittels Schrauben 38 befestigt ist, die in Längsrichtung des Tragbalkens 37 verlaufende Langlöcher 39 im Tragbalken 37 durchsetzen. Die Länge b dieser Langlöcher 39 ist größer als die halbe Breite c eines Anpreßbandes 33. An den freien Enden der Kolbenstange 40 der Spann-Einrichtung 35 ist jeweils ein Befestigungsstück 41 angebracht, an dem das freie Ende 34 des jeweiligen Anpreßbandes 33 befestigt ist. Bei ausgefahrener Kolbenstange 40 liegt das jeweilige Anpreßband 33 gegen die obere Riffelwalze 13 an, was in den Fig. 2 und 3 mit ausgezogenen Linien dargestellt ist. Bei eingefahrener Kolbenstange 40 wird das jeweilige Anpreßband 33 vom Umfang der Riffelwalze 13 abgehoben, was in den Fig. 2 und 3 strichpunktiert dargestellt ist.A pressure device 31 is arranged above the upper corrugating roller 13 and has a belt holder 32 which is arranged between the deflecting roller 29 and the upper corrugating roller 13 and is fixed to the side walls 2, 3 of the machine frame 1. On this bar-like belt holder 32, individual contact belts 33 are fastened seamlessly next to one another and extend from the belt holder 32 in the direction of rotation 22 of the upper corrugating roller 13, namely by a circumferential angle α which is approximately 90 to 120 °. At each end 34 of a pressure band 33 opposite the band holder 32, a tensioning device 35 engages, which is formed in each case by a hydraulically actuatable piston-cylinder drive. All cylinders 36 are attached to a support beam 37, which in turn is fastened to the side walls 2, 3 by means of screws 38 which pass through elongated holes 39 in the support beam 37 which extend in the longitudinal direction of the support beam 37. The length b of these elongated holes 39 is greater than half the width c of a pressure belt 33. At the free ends of the piston rod 40 of the tensioning device 35, a fastening piece 41 is attached, to which the free end 34 of the respective pressure belt 33 is fastened. When the piston rod 40 is extended, the respective pressure belt 33 bears against the upper corrugating roller 13, which is shown in solid lines in FIGS. 2 and 3. When the piston rod 40 is retracted, the respective pressure belt 33 is lifted from the circumference of the corrugated roller 13, which is shown in broken lines in FIGS. 2 and 3.

Die Anpreßbänder 33 bestehen aus dünnem Stahl, beispielsweise Federstahl, aus einem geeigneten Kunststoff, aus einem Stahlgewebe oder aus einem Material mit keramischer Beschichtung. In jedem Fall ist es zweckmäßig, wenn die Anpreßbänder 33 luftdurchlässig sind, d.h. Stahl- oder Kunststoffbänder sind mit einer Perforierung versehen.The pressure bands 33 consist of thin steel, for example spring steel, of a suitable plastic, of a steel mesh or a material with a ceramic coating. In any case, it is expedient if the pressure tapes 33 are permeable to air, ie steel or plastic tapes are provided with a perforation.

Oberhalb der oberen Riffelwalze 13 ist eine 2. Vorheizwalze 42 in Lagern 43 um eine Drehachse 44 drehbar gelagert. Die Lager 43 sind auf den Seitenwänden 2, 3 des Maschinengestells 1 befestigt. Dieser 2. Vorheizwalze 42 ist eine 1. Vorheizwalze 45 vorgeordnet, die um eine Drehachse 46 in Lagern 47 drehbar gelagert ist, die ebenfalls auf den Seitenwänden 2, 3 des Maschinengestells 1 befestigt sind. Zwischen der 1. Vorheizwalze 45 und der 2. Vorheizwalze 42 ist eine ortsfeste drehbare Leitwalze 48 angeordnet. Weiterhin ist jeder Vorheizwalze 42 bzw. 45 eine um die jeweilige Drehachse 44 bzw. 46 einstellbare Leitwalze 49 bzw. 50 zugeordnet. Die Vorheizwalzen 42, 45 und die Umlenkwalze 29 sind in gleicher Weise beheizbar wie die Riffelwalzen 4, 13.Above the upper corrugating roller 13, a second preheating roller 42 is mounted in bearings 43 so as to be rotatable about an axis of rotation 44. The bearings 43 are attached to the side walls 2, 3 of the machine frame 1. This 2nd preheating roller 42 is preceded by a 1st preheating roller 45 which is rotatably mounted about an axis of rotation 46 in bearings 47 which are also fastened to the side walls 2, 3 of the machine frame 1. A stationary, rotatable guide roller 48 is arranged between the 1st preheating roller 45 and the 2nd preheating roller 42. Furthermore, each preheating roller 42 or 45 is assigned a guide roller 49 or 50 which can be adjusted about the respective axis of rotation 44 or 46. The preheating rollers 42, 45 and the deflection roller 29 can be heated in the same way as the corrugating rollers 4, 13.

Der oberen Riffelwalze 13 sind in Drehrichtung 22 eine Leitwalze 51 und eine Auszugeinrichtung 51a nachgeordnet.The upper corrugated roller 13 is followed by a guide roller 51 and a pull-out device 51a in the direction of rotation 22.

Soweit die Ausführungsform nach den Fig. 4 und 5 mit der nach den Fig. 1 bis 3 übereinstimmt, werden dieselben Bezugsziffern verwendet, ohne daß es einer erneuten Beschreibung bedarf. Soweit funktionell gleiche, konstruktiv aber geringfügig andere Teile vorgesehen sind, werden dieselben Bezugsziffern jedoch mit einem hochgesetzten Strich verwendet. Einer erneuten Beschreibung bedarf es insgesamt insoweit nicht.Insofar as the embodiment according to FIGS. 4 and 5 corresponds to that according to FIGS. 1 to 3, the same reference numbers are used without the need for a new description. Insofar as functionally identical, but structurally but slightly different parts are provided, the same reference numbers are used, however, with a prime. There is no need for a new description.

Bei der Ausführungsform nach den Fig. 4 und 5 ist oberhalb der oberen Riffelwalze 13 eine Anpreß-Einrichtung 52 vorgesehen. Sie weist einen etwa konzentrisch zur Drehachse 16 der oberen Riffelwalze verlaufenden, sich über die volle Länge der oberen Riffelwalze 13 erstreckenden Tragbügel 53 auf, der in ortsfest im Maschinengestell 1 befestigten Widerlagern 54, 55 leicht montierbar und demontierbar festgelegt ist. An der der oberen Riffelwalze 13 zugewandten Seite des Tragbügels 53 ist ein Anpreßband 56 aus nachgiebigem Material, beispielsweise Gummi oder Kunststoff oder dünnem Stahlblech od.dgl. angebracht, wobei zwischen dem Anpreßband 56 und dem teilzylindrischen Tragbügel 53 ein luftdichter Druckraum 57 begrenzt wird. In diesen Druckraum 57 mündet durch den Tragbügel 53 ein Druckanschluß 58 für Druckluft oder Druckflüssigkeit.In the embodiment according to FIGS. 4 and 5, a pressure device 52 is provided above the upper corrugating roller 13. It has an approximately concentric to the axis of rotation 16 of the upper corrugating roller, which extends over the full length of the upper corrugating roller 13 and has a mounting bracket 53 which is fixed in fixedly mounted in the machine frame 1 abutments 54, 55 and can be removed easily. On the side of the support bracket 53 facing the upper corrugating roller 13 there is a pressure band 56 made of flexible material, for example rubber or plastic or thin steel sheet or the like. attached, an airtight pressure chamber between the pressure band 56 and the partially cylindrical support bracket 53 57 is limited. A pressure connection 58 for compressed air or pressure fluid opens into this pressure chamber 57 through the support bracket 53.

Bei der Ausgestaltung nach den Fig. 4 und 5 ist die 2. Vorheizwalze 42' nicht in maschinengestellfesten Lagern, sondern in als Doppelhebel ausgebildeten Schwingen 59 gelagert, deren eines Ende jeweils mittels eines Schwenklagers 60 an jeder Seitenwand 2 bzw. 3 des Maschinengestells 1 gelagert ist. Das andere Ende 61 jeder Schwinge 59 ist über einen Zustell-Antrieb 62 mit dem Maschinengestell 1 verbunden. Diese Zustell-Antriebe 62 sind als hydraulisch beaufschlagbare Kolben-Zylinder-Antriebe ausgebildet, deren Zylinder 63 an der jeweiligen Seitenwand 2 bzw. 3 schwenkbar gelagert sind, während ihre Kolbenstange 64 am Ende 61 der jeweiligen Schwinge 59 angreift. Wenn die Anpreß-Einrichtung 52 eingebaut ist, dann befindet sich die 2. Vorheizwalze 42' in der in Fig. 4 dargestellten hochgeschwenkten Position, in der also die Kolbenstange 64 aus dem Zylinder 63 ausgefahren ist. Sie arbeitet ausschließlich als Vorheizwalze. Wenn dagegen die Anpreß-Einrichtung 52 ausgebaut ist, dann kann die 2. Vorheizwalze 42' gegen die obere Riffelwalze 13 geschwenkt werden, was in Fig. 4 strichpunktiert angedeutet ist. In dieser Position wirkt sie als Anpreßwalze.4 and 5, the second preheating roller 42 'is not mounted in bearings fixed to the machine frame, but in rockers 59 designed as double levers, one end of which is mounted on each side wall 2 or 3 of the machine frame 1 by means of a pivot bearing 60 is. The other end 61 of each rocker 59 is connected to the machine frame 1 via a feed drive 62. These feed drives 62 are designed as hydraulically actuatable piston-cylinder drives, the cylinders 63 of which are pivotably mounted on the respective side wall 2 or 3, while their piston rod 64 acts on the end 61 of the respective rocker 59. When the pressure device 52 is installed, the second preheating roller 42 'is in the swiveled-up position shown in FIG. 4, in which the piston rod 64 is thus extended from the cylinder 63. It works exclusively as a preheating roller. On the other hand, if the pressing device 52 is removed, then the second preheating roller 42 'can be pivoted against the upper corrugating roller 13, which is indicated by dash-dotted lines in FIG. 4. In this position it acts as a pressure roller.

In Fig. 6 ist eine gegenüber den Fig. 4 und 5 abgewandelte Anpreß-Einrichtung 52' im Teilschnitt dargestellt. Sie weist ebenfalls einen Tragbügel 53 auf, der mit parallel zur Drehachse 16 verlaufenden hinterschnittenen Nuten 65 versehen ist. In diesen Nuten 65 werden nebeneinander Anpreß-Segmente 66 mittels im Querschnitt T-förmiger Befestigungszapfen 67 befestigt. Die Anpreß-Segmente 66 weisen eine teilkreisförmig gebogene Grundplatte 68 auf, an der die Befestigungszapfen 67 angebracht sind. An der Grundplatte 68 ist als Spann-Einrichtung ein im Querschnitt balgartiger Druckkörper 69 angeordnet, der einen an einen Druckanschluß 58' angeschlossenen inneren Druckraum 70 aufweist. An der der oberen Riffelwalze 13 zugewandten Seite des langgestreckten Druckkörpers 69 ist ein Anpreßband 71 angebracht. Der als Anpreßelement dienende Druckkörper 69 besteht aus einem elastischen Material, beispielsweise Gummi od.dgl. Wenn sein Druckraum 70 nicht mit Druckmittel beaufschlagt ist, dann befindet sich das Anpreßband 71 entsprechend der Darstellung in Fig. 6 links im Abstand von der Riffelung 20 der oberen Riffelwalze 13. Wenn dagegen die Druckräume 70 der Druckkörper 69 mit Druckmittel beaufschlagt werden, dann weitet sich der Druckkörper 69 auf, wodurch das Anpreßband 71 gegen die Riffelung 20 zugestellt wird, wie in Fig. 6 Mitte und rechts angedeutet ist.FIG. 6 shows a pressing device 52 ′ which is modified compared to FIGS. 4 and 5, in partial section. It also has a support bracket 53 which is provided with undercut grooves 65 running parallel to the axis of rotation 16. In these grooves 65, pressure segments 66 are fastened next to one another by means of fastening pins 67 with a T-shaped cross section. The pressure segments 66 have a base plate 68 which is bent in the form of a part circle and to which the fastening pins 67 are attached. Arranged on the base plate 68 as a clamping device is a bellows-like pressure body 69 which has an inner pressure chamber 70 connected to a pressure connection 58 '. A pressure band 71 is attached to the side of the elongated pressure body 69 facing the upper corrugating roller 13. The pressure body 69 serving as a pressing element consists of an elastic material, for example rubber or the like. If its pressure chamber 70 is not pressurized, then the pressure belt 71, as shown in FIG. 6, is located on the left at a distance from the corrugation 20 of the upper corrugating roller 13. If, on the other hand, the pressure chambers 70 of the pressure body 69 are acted upon by pressure medium, then the pressure body 69 expands, as a result of which the pressure band 71 is advanced against the corrugation 20, as indicated in the center and right in FIG. 6.

Die Wirkungsweise der Maschinen ist wie folgt:
In den Berührungsbereich 21 zwischen der unteren Riffelwalze 4 und der oberen Riffelwalze 13 läuft eine Papierbahn 72 ein, die durch die Riffelungen 19, 20 mit einer Wellung 73 versehen wird. Die Spitzen 74 der jeweiligen Wellung 73 werden in der Leimauftragseinrichtung 24 mit Leim versehen. Die übrigen Bereiche der gewellten Papierbahn 72 werden nicht beleimt. Über die 1. Vorheizwalze 45, die einstellbare Leitwalze 50, die ortsfeste Leitwalze 48, die einstellbare Leitwalze 49 und die 2. Vorheizwalze 42 und die Umlenkwalze 29 wird eine Kaschierbahn 75 zugeführt, die ebenfalls aus Papier besteht und die gleiche Breite hat wie die Papierbahn 72. Dadurch daß zwischen der 2. Vorheizwalze 42 bzw. 42' und der oberen Riffelwalze 13 sich die Umlenkwalze 29 befindet, gelangt die an der 2. Vorheizwalze 42 bzw. 42' anliegende von dieser besonders intensiv vorgewärmte Seite der Kaschierbahn 75 in eine der Papierbahn 72 zugewandte Position, d.h. die auf der 2. Vorheizwalze 42 bzw. 42' vorgeheizte Seite der Kaschierbahn 75 kommt zur Anlage gegen die beleimten Spitzen 74 der Papierbahn 72. Die Kaschierbahn 75 wird in der Anpreß-Einrichtung 31 bzw. 52 bzw. 52' fest gegen die beleimten Spitzen 74 der gewellten Papierbahn 72 gepreßt. Die Anpreßbänder 33 bzw. das Anpreßband 56 bzw. die Anpreßbänder 71 üben hierbei den erforderlichen Anpreßdruck auf die Kaschierbahn 75 aus. Da die Kaschierbahn 75 in der geschilderten Weise vorgeheizt ist und da die obere Riffelwalze 13 beheizt ist, erfolgt auf dem Weg über den Umfangswinkel a auf der oberen Riffelwalze 13 eine feste Verleimung zwischen der Kaschierbahn 75 und der gewellten Papierbahn 72. Die fertig verleimte, einseitig mit einer Kaschierbahn 75 kaschierte Wellpappebahn 76 läuft in einer der Transportrichtung 77 der Bahnen 72, 75 entsprechenden Abzugsrichtung aus der Maschine heraus. Wenn bei der Ausgestaltung nach den Fig. 4 und 5 bzw. 6 die Anpreß-Einrichtung 52 bzw. 52' aus der Maschine entfernt ist, dann wird die 2. Vorheizwalze 42' zur oberen Riffelwalze 13 hin verschwenkt und wirkt als Anpreßwalze.The machines work as follows:
A paper web 72 enters the contact area 21 between the lower corrugating roller 4 and the upper corrugating roller 13 and is provided with a corrugation 73 by the corrugations 19, 20. The tips 74 of the respective corrugation 73 are provided with glue in the glue application device 24. The other areas of the corrugated paper web 72 are not glued. Via the first preheating roller 45, the adjustable guide roller 50, the stationary guide roller 48, the adjustable guide roller 49 and the second preheating roller 42 and the deflecting roller 29, a laminating web 75 is fed, which is also made of paper and has the same width as the paper web 72. Because the deflection roller 29 is located between the 2nd preheating roller 42 or 42 'and the upper corrugating roller 13, the side of the laminating web 75 which is particularly intensively preheated by the 2nd preheating roller 42 or 42' passes into one of the Paper web 72 facing position, ie the side of the laminating web 75 preheated on the second preheating roller 42 or 42 ′ comes to bear against the glued tips 74 of the paper web 72. The laminating web 75 is in the pressing device 31 or 52 or 52 'pressed firmly against the glued tips 74 of the corrugated paper web 72. The pressure tapes 33 or the pressure tape 56 or the pressure tapes 71 exert the required contact pressure on the laminating web 75. Since the laminating web 75 is preheated in the manner described and since the upper corrugating roller 13 is heated, on the way over the circumferential angle a on the upper corrugating roller 13 there is a fixed gluing between the laminating web 75 and the corrugated paper web 72. The finished glued, one-sided corrugated cardboard web 76 laminated with a liner web 75 runs out of the machine in a withdrawal direction corresponding to the transport direction 77 of the webs 72, 75. If, in the embodiment according to FIGS. 4 and 5 or 6, the pressing device 52 or 52 'is removed from the machine, then the second preheating roller 42' is pivoted towards the upper corrugating roller 13 and acts as a pressing roller.

Die Anpreßbänder 33 bzw. 71 sind einzeln ansteuerbar, d.h. jede Spann-Einrichtung 35 bzw. jeder als Anpreßelement dienende Druckkörper 69 sind jeweils einzeln ansteuerbar. Grundsätzlich gilt, daß der Anpreßdruck in Abhängigkeit von der Temperatur der einlaufenden oder der auslaufenden Kaschierbahn 75 gesteuert werden kann, um eine zu große Erwärmung der Kaschierbahn 75 zu vermeiden. Dem dient auch die erwähnte luftdurchlässige Ausgestaltung der Anpreßbänder 33 und 71. Wenn die Breite d der Papierbahn 72 und der Kaschierbahn 75 kleiner ist als die Länge e der oberen Riffelwalze 13, was in Fig. 1 angedeutet ist, dann werden die nicht benötigten Anpreßbänder 33 durch Nichtbeaufschlagung ihrer Spann-Einrichtungen 35 in die in Fig. 2 und 3 strichpunktiert dargestellte Stellung außer Eingriff mit der Riffelwalze 13 gebracht. Entsprechendes gilt für die Anpreß-Einrichtung 52'. Der Überstand von Anpreßbändern 33 bzw. 71 über die Papierbahn 72 und Kaschierbahn 75 kann durch die Verstellbarkeit des die Spann-Einrichtungen 35 tragenden Tragbalkens 37 und eine entsprechende Verstellbarkeit des Bandhalters 32 jeweils in Richtung 79 um eine halbe Breite c der Anpreßbänder 33 erreicht werden. Auch hier gilt Entsprechendes für die Anpreß-Einrichtung 52'. In einem solchen Fall ist der seitliche Überstand eines Anpreßbandes 33 bzw. 71 über Papierbahn 72 und die Kaschierbahn 75 kleiner als die halbe Breite c, wenn außerdem die nicht benötigten Spann-Einrichtungen 35, 69 nicht betätigt sind.The pressure belts 33 and 71 can be controlled individually, i.e. each clamping device 35 or each pressure body 69 serving as a pressing element can be controlled individually. Basically, the contact pressure can be controlled as a function of the temperature of the incoming or outgoing liner web 75 in order to avoid excessive heating of the liner web 75. The air-permeable design of the pressure belts 33 and 71 also serves this purpose. If the width d of the paper web 72 and the liner web 75 is smaller than the length e of the upper corrugating roller 13, which is indicated in FIG. 1, then the pressure belts 33 that are not required become brought out of engagement with the corrugated roller 13 by not acting on their tensioning devices 35 in the position shown in broken lines in FIGS. 2 and 3. The same applies to the pressing device 52 '. The protrusion of pressure tapes 33 and 71 over the paper web 72 and laminating web 75 can be achieved by the adjustability of the support beam 37 carrying the tensioning devices 35 and a corresponding adjustability of the tape holder 32 in the direction 79 by half a width c of the pressure tapes 33. The same applies here to the pressing device 52 '. In such a case, the lateral protrusion of a pressure belt 33 or 71 over paper web 72 and the liner web 75 is smaller than half the width c if, in addition, the unneeded tensioning devices 35, 69 are not actuated.

Die Lage der unteren Riffelwalze 4 relativ zur oberen Riffelwalze 13 ist nicht zwingend. Auch die Vorheizwalzen 42, 42' bzw. 45 können ihre Position relativ zur oberen Riffelwalze 13 ändern. Lediglich die Lage der Leimauftragseinrichtung 24 relativ zur oberen Riffelwalze 13 ist vorgegeben.The position of the lower corrugating roller 4 relative to the upper corrugating roller 13 is not mandatory. The preheating rollers 42, 42 'and 45 can also change their position relative to the upper corrugating roller 13. Only the position of the glue application device 24 relative to the upper corrugating roller 13 is predetermined.

Da die Anpreßbänder 33 bzw. 71 nicht völlig fugenlos nebeneinander angeordnet sein können, besteht die Gefahr, daß die Kaschierbahn 75 jeweils im Bereich zwischen zwei Anpreßbändern 33 bzw. 71 leichte Stege erhält. Um dies zu vermeiden, können gemäß Fig. 7 die einander benachbarten Kanten 78 benachbarter Anpreßbänder 33 bzw. 71 beispielsweise entsprechend einer Sinuswelle gewellt sein. In der Ausgestaltung nach Fig. 8 verlaufen die Kanten 78' schräg zur Transportrichtung 77 der Bahnen 72, 75. In den Fig. 7 und 8 sind auch in den Anpreßbändern 33 bzw. 71 ausgebildete Löcher 80 dargestellt, die das jeweilige Anpreßband 33 bzw. 71 luftdurchlässig machen.Since the pressure tapes 33 and 71 cannot be arranged completely seamlessly next to one another, there is a risk that the liner web 75 will receive light webs in the area between two pressure tapes 33 and 71, respectively. To avoid this, according to FIG. 7, the mutually adjacent edges 78 of adjacent pressure bands 33 and 71 can be corrugated, for example in accordance with a sine wave. In the embodiment according to FIG. 8, the edges 78 'run obliquely to the transport direction 77 of the webs 72, 75. In FIGS or 71 formed holes 80 are shown, which make the respective pressure band 33 or 71 air-permeable.

Die Anpreßbänder 33 bzw. 71 haben eine Breite c unterhalb 2oo mm und bevorzugt im Bereich von 50 bis 200 mm.The pressure tapes 33 and 71 have a width c below 2oo mm and preferably in the range from 50 to 200 mm.

Wenn die 2. Vorheizwalze 42 als Anpreßwalze eingesetzt wird, dann wird die Kaschierbahn 75 über die 1. Vorheizwalze 45, die einstellbare Leitwalze 50, die ortsfeste Leitwalze 48 direkt oberhalb der Umlenkwalze 29 der als Anpreßwalze dienenden 1. Vorheizwalze 45 zugeführt und in den Berührungsbereich zwischen der oberen Riffelwalze 13 und der Walze 42 eingeführt. Die Kaschierbahn 75 wird auch hierbei zwischen der dann als Anpreßwalze 42 dienenden Vorheizwalze und der Riffelwalze 13 mit der gewellten Papierbahn 72 verklebt und läuft in Transportrichtung 72 zur Auszugeinrichtung 51a. Die Umlenkwalze 29 wird hierbei nicht umschlungen.If the 2nd preheating roller 42 is used as a pressure roller, the laminating web 75 is fed via the 1st preheating roller 45, the adjustable guide roller 50, the stationary guide roller 48 directly above the deflecting roller 29 to the 1st preheating roller 45 serving as the pressure roller and into the contact area inserted between the upper corrugating roller 13 and the roller 42. The laminating web 75 is also glued between the preheating roller 42, which then serves as the pressure roller 42, and the corrugated roller 13 with the corrugated paper web 72 and runs in the transport direction 72 to the pull-out device 51a. The deflection roller 29 is not wrapped around here.

Claims (11)

Maschine zur Herstellung einer einseitig kaschierten Wellpappebahn (76),
mit zwei Riffelwalzen (4, 13) zur Erzeugung einer Wellung (73) an einer Papierbahn (72),
mit einer Leimauftragseinrichtung (24) zum Auftrag von Leim auf die Spitzen (74) der Wellung (73) der gewellten Papierbahn (72),
mit einer Anpreß-Einrichtung (31, 52, 52') zum Anpressen einer Kaschierbahn (75) an die mit Leim versehenen Spitzen (74) der an einer der Riffelwalzen (13) über einen Anpreßbereich anliegenden gewellten Papierbahn (72), wobei die Anpreß-Einrichtung (31, 52, 52') ein Anpreßband aufweist, das über den Anpreßbereich gegen die Riffelwalze (13) drückbar ist, dadurch gekennzeichnet, daß die Anpreß-Einrichtung (31, 52, 51') mindestens ein im wesentlichen ortsfestes, endliches Anpreßband (33, 56, 71) aufweist.Machine for producing a single-sided laminated corrugated cardboard web (76),
with two corrugated rollers (4, 13) for producing a corrugation (73) on a paper web (72),
with a glue application device (24) for applying glue to the tips (74) of the corrugation (73) of the corrugated paper web (72),
with a pressing device (31, 52, 52 ') for pressing a laminating web (75) against the glue-coated tips (74) of the corrugated paper web (72) which is in contact with one of the corrugating rollers (13) via a pressing area, the pressing -Device (31, 52, 52 ') has a pressure band which can be pressed against the corrugating roller (13) via the pressure area, characterized in that the pressure device (31, 52, 51') has at least one essentially fixed, finite one Pressure band (33, 56, 71). Maschine nach Anspruch 1, dadurch gekennzeichnet, daß die Anpreß-Einrichtung (31, 52') über die maximale Breite (d) der Wellpappebahn (76) nebeneinander mehrere einander benachbarte Anpreßbänder (33, 71) aufweist.Machine according to Claim 1, characterized in that the pressure device (31, 52 ') has a plurality of pressure bands (33, 71) adjacent to one another over the maximum width (d) of the corrugated cardboard web (76). Maschine nach Anspruch 2, dadurch gekennzeichnet, daß jedem Anpreßband (33, 71) eine gesonderte Spann-Einrichtung (35, 69) zugeordnet ist.Machine according to claim 2, characterized in that a separate clamping device (35, 69) is assigned to each pressure belt (33, 71). Maschine nach Anspruch 2, dadurch gekennzeichnet, daß die Anpreß-bänder (33) an einem gemeinsamen Bandhalter (32) befestigt sind.Machine according to claim 2, characterized in that the pressure tapes (33) are attached to a common tape holder (32). Maschine nach Anspruch 3, dadurch gekennzeichnet, daß die Spann-Einrichtung (35) durch einen an einem Ende (34) eines jeweiligen Anpreßbandes (33) angreifenden Linearantrieb gebildet ist.Machine according to claim 3, characterized in that the tensioning device (35) is formed by a linear drive acting on one end (34) of a respective pressure belt (33). Maschine nach Anspruch 3, dadurch gekennzeichnet, daß Spann-Einrichtung durch einen sich über einen wesentlichen Teil der Länge des Anpreßbandes (71) erstreckenden, mittels Druckmittel aufweitbaren Druckkörper (69) gebildet ist.Machine according to Claim 3, characterized in that the clamping device is formed by a pressure body (69) which can be expanded by means of pressure medium and extends over a substantial part of the length of the pressure band (71). Maschine nach Anspruch 3, dadurch gekennzeichnet, daß die Spann-Einrichtungen (35, 69) einzeln ansteuerbar sind.Machine according to claim 3, characterized in that the clamping devices (35, 69) can be controlled individually. Maschine nach Anspruch 3, dadurch gekennzeichnet, daß die Anpreßbänder (33, 71) nebst Spann-Einrichtung (35, 69) in Längsrichtung der Riffelwalzen (4, 13) verschiebbar und einstellbar sind.Machine according to claim 3, characterized in that the pressure belts (33, 71) together with the tensioning device (35, 69) are displaceable and adjustable in the longitudinal direction of the corrugated rollers (4, 13). Maschine nach Anspruch 2, dadurch gekennzeichnet, daß die einander benachbarten Kanten (78, 78') der Anpreßbänder (33, 71) einen von der Transportrichtung (77) der Wellpappebahn (76) abweichenden Verlauf haben.Machine according to claim 2, characterized in that the mutually adjacent edges (78, 78 ') of the pressure belts (33, 71) have a course which deviates from the transport direction (77) of the corrugated cardboard web (76). Maschine nach Anspruch 2, dadurch gekennzeichnet, daß die Anpreßbänder (33, 71) luftdurchlässig sind.Machine according to claim 2, characterized in that the pressure tapes (33, 71) are permeable to air. Maschine nach Anspruch 2, dadurch gekennzeichnet, daß für die Breite (c) der Anpreßbänder (33, 71) gilt: c < 200 mm und bevorzugt 50 mm < c < 200 mm.Machine according to Claim 2, characterized in that the following applies to the width (c) of the pressure bands (33, 71): c <200 mm and preferably 50 mm <c <200 mm.
EP95108869A 1994-06-16 1995-06-08 Device for production of a corrugated board with at least one side being covered Expired - Lifetime EP0687553B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4420958 1994-06-16
DE4420958A DE4420958A1 (en) 1994-06-16 1994-06-16 Machine for the production of a single-sided laminated corrugated cardboard web

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EP0687553A2 true EP0687553A2 (en) 1995-12-20
EP0687553A3 EP0687553A3 (en) 1996-04-17
EP0687553B1 EP0687553B1 (en) 1998-09-02

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Also Published As

Publication number Publication date
DE4420958A1 (en) 1995-12-21
US5630903A (en) 1997-05-20
EP0687553A3 (en) 1996-04-17
DE59503412D1 (en) 1998-10-08
EP0687553B1 (en) 1998-09-02

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