EP1071557B1 - Device for heating a moving material strip, especially preheater for a corrugated board machine - Google Patents

Device for heating a moving material strip, especially preheater for a corrugated board machine Download PDF

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Publication number
EP1071557B1
EP1071557B1 EP99927657A EP99927657A EP1071557B1 EP 1071557 B1 EP1071557 B1 EP 1071557B1 EP 99927657 A EP99927657 A EP 99927657A EP 99927657 A EP99927657 A EP 99927657A EP 1071557 B1 EP1071557 B1 EP 1071557B1
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EP
European Patent Office
Prior art keywords
guide
material web
heating
guides
heating cylinder
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
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EP99927657A
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German (de)
French (fr)
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EP1071557A1 (en
Inventor
Thomas Bauer
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
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BHS Corrugated Maschinen und Anlagenbau GmbH
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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
    • B31F1/285—Heating or drying equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/12—Controlling movement, tension or position of material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F26B13/18—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning heated or cooled, e.g. from inside, the material being dried on the outside surface by conduction

Definitions

  • the invention relates to a heating device for a moving material web, in particular a preheater for a corrugated board system with the features of Preamble of claim 1.
  • Such a heating device is known for example from DE 23 02 449 C3.
  • This device consists of a heating roller, preferably by Steam can be heated as a heating medium.
  • the material web is heated in that the heating roller from the material web with a predetermined Wrap angle is wrapped.
  • two guide rollers are in the known device provided which is pivotable about the outer circumference of the heating roller are.
  • the guide rollers have a fixed relative position to each other and are arranged on two rigidly connected arms. The poor are together by means of a suitable drive around the axis of the heating roller swiveling.
  • the two pivotable guide rollers can be circumferentially from this position be pivoted until the front deflection roller in the swivel direction comes into engagement with the material web. Will the two guides pivoted further, the wrap angle increases accordingly.
  • this track strand with the second swivel guide roller from crossing a certain swivel angle (calculated from the position with minimal Wrap angle) held at a sufficient distance from the heating roller.
  • this known heating device a maximum wrap angle enables. Furthermore, this embodiment ensures in position with the minimum wrap angle (remaining wrap angle) extremely easy feeding of the material web to be heated. Because this must only between the peripheral surface of the heating roller and the two pivotable Guide rollers are passed through.
  • a disadvantage of this heating device is that a certain residual wrap angle remains and consequently the material web is unavoidable a certain minimum thermal energy is supplied.
  • DE-OS 15 11 061 also describes a device for preparation of tape-like material to be glued, such as corrugated cardboard, known in the the material web is also guided around a pivotable guide roller.
  • a pivotable guide roller In the position in which a single guide roller is used minimal wrap angle would arise in this known device another guide role, which in this position is the material web completely stands out from the peripheral surface of the heating roller. In this position with a zero wrap angle, the material web runs in an S-shape between the two leadership roles. The one in the zero wrap angle position the material web lifting leading role is again rigidly connected to the guide roller defining the wrap angle.
  • Both guide rollers are pivotable about the axis the heating roller can be swiveled. In this known device can thus Position with zero wrap angle the energy supply to the material web be completely switched off.
  • the invention is based on the object a heating device for a moving material web, in particular one To create a preheater for a corrugated cardboard system with as little as possible Effort a maximum heated length of the material web is achievable and where at the same time the heated length can be easily varied to zero can be.
  • all of the guides are connected to a support part pivotable about the axis of the heating roller. All guides can be the same distance from the circumference of the heating roller exhibit.
  • the third, lifting the material web in the position with zero wrap angle Leadership is in the preferred embodiment of the invention, in Seen circumferential direction of the heating roller, at a minimum allowable distance arranged by the first guide.
  • the third guide must refer to the radial direction ( on the heating roller) so that it is in the position with zero wrap angle actually a lifting of the material web on the peripheral surface the heating roller takes place.
  • the material web fed via a rigid inlet-side guide and a rigid outlet-side Leadership removed, with the inlet and outlet side leadership with the Axis of the heating roller lie essentially on a straight line. This gives the advantage of a maximum possible wrap angle. This is approx. 270 to 280 °.
  • the third guide can be based on the heating roller, opposite the first guide in the radial direction to the outside be offset.
  • the first and third guides are in the position of the minimum Wrap angle (zero wrap angle) S-shaped from the Material web wrapped around.
  • the third guide within the through the Define axes of the first and second guide and the axis of the heating roller Arranged center point the guides can be pivoted so far until the first guide is not in contact with the inlet side or run side run of the material web. This results in a maximum Wrap angle.
  • the first and third guides wrapped extremely S-shaped. This would again threading the material web, for example after tearing, difficult.
  • the third guide can leave the normal working position in a position, seen in the circumferential direction of the heating roller, in front of the first guide can be converted into a threading position. This can preferably by pivoting the third guide around the axis of the first guide respectively.
  • the third guide can preferably be in the threading position and / or the working position can be designed to be lockable.
  • Fig. 1 shows a schematic side view of a first embodiment a heating device according to the invention.
  • the heating device 1 comprises one Heating roller 3, which is shown in a machine frame 5 shown only schematically is stored and rotatably driven.
  • the heating roller 3 can for example by means of Superheated steam can be heated.
  • the heating device 1 further comprises three guides 7, 9, 11, which are preferably can be designed as guide rollers.
  • the heating device 1 becomes a material web to be heated via a stationary one inlet-side guide 15 and supplied via an also stationary outlet-side Leadership 17 removed.
  • the stationary guides 15, 17 can either in the heating device 1 may be integrated or a component upstream or downstream Be machines or system parts.
  • the guide rollers 7, 9, 11 are on a pivotable about the axis A.
  • Part 19 preferably held rotatably.
  • corresponding pivotable parts 19 are provided be, which support the guide rollers 7, 9, 11 rotatably on both sides.
  • the pivotable Side parts 19 can then by a suitable drive to the Axis A of the heating roller 3 can be pivoted.
  • FIG. 1 A further intermediate position of the guide rollers 7, 9, 11 is shown in dashed lines. This position corresponds approximately to a pivoting the guides 7, 9, 11 by a pivoting angle of 180 °. In this position the web of material 13 is initially from the inlet-side stationary guide 15 fed to the guide roller 7, wraps around it and then runs to the peripheral surface the heating roller 3. This is wrapped with a wrap angle of approx. Wrapped 180 ° before the material web 13 over the outlet-side stationary Guide roller 17 is removed.
  • FIG. 2 shows the maximum wrap angle ⁇ max in the embodiment according to FIG. 1.
  • the guide roller 9 just does not touch the run side run of the material web.
  • a further pivoting of the guide rollers would in principle be possible, but would lead to the run-side run of the material web 19 being deflected due to the contact with the guide roll 9 in a direction in which this run would be lifted further and further from the peripheral surface of the heating roller 3.
  • the overall wrap angle that can be achieved would remain constant at most.
  • the guide roller 7, which defines the wrap angle is wrapped around as well as in the intermediate position shown in broken lines in FIG. 1.
  • the material web 13 runs from the stationary inlet-side guide 15 first to the guide roller 11 and only from this to the guide roller 7.
  • the guide roller 11 prevents the feed-side strand of the material web 13 from touching or grinding with the heating roller or material web already wrapped around the heating roller.
  • FIG. 3 corresponds to Essentially the embodiment according to FIGS. 1 and 2.
  • Guide roller 9 arranged so that it is in the normal working position on the heating roller 3, opposite the one defining the wrap angle Guide roller 7 is offset substantially radially outwards.
  • the guide roller 9 in the threading position or in the normal working position be designed lockable.
  • This embodiment shown in Fig. 3 has the advantage that the guide roller 7, which defines the wrap angle, practically up to the outlet side Run of the material web 13 can be pivoted. Different to in the embodiment according to FIGS. 1 and 2, the maximum achievable Wrap angle is not limited by the guide roller 9.
  • the wrap angle must always be the guide roller 11 still ensure that the run side run of the material web 13 if possible not in contact with the peripheral surface of the heating roller 3 or the looped around it Material web arrives.
  • the position of the guide roller 11 can do this can be freely chosen within wide limits.

Description

Die Erfindung betrifft eine Heizvorrichtung für eine bewegte Materialbahn, insbesondere einen Vorheizer für eine Wellpappenanlage mit den Merkmalen des Oberbegriffs des Patentanspruchs 1.The invention relates to a heating device for a moving material web, in particular a preheater for a corrugated board system with the features of Preamble of claim 1.

Eine derartige Heizvorrichtung ist beispielsweise aus der DE 23 02 449 C3 bekannt. Diese Vorrichtung besteht aus einer Heizwalze, die vorzugsweise durch Dampf als Wärmemedium beheizbar ist. Das Beheizen der Materialbahn erfolgt dadurch, dass die Heizwalze von der Materialbahn mit einem vorbestimmten Umschlingungswinkel umschlungen wird. Um eine Anpassung der zugeführten Wärmeenergie zu ermöglichen, sind bei der bekannten Vorrichtung zwei Führungsrollen vorgesehen, die um den Außenumfang der Heizwalze verschwenkbar sind. Die Führungsrollen weisen eine feste Relativposition zueinander auf und sind hierzu an zwei starr miteinander verbundenen Armen angeordnet. Die Arme sind gemeinsam mittels eines geeigneten Antriebs um die Achse der Heizwalze schwenkbar.Such a heating device is known for example from DE 23 02 449 C3. This device consists of a heating roller, preferably by Steam can be heated as a heating medium. The material web is heated in that the heating roller from the material web with a predetermined Wrap angle is wrapped. To adjust the feed To enable thermal energy, two guide rollers are in the known device provided which is pivotable about the outer circumference of the heating roller are. The guide rollers have a fixed relative position to each other and are arranged on two rigidly connected arms. The poor are together by means of a suitable drive around the axis of the heating roller swiveling.

In einer Position, die den minimalen Umschlingungswinkel definiert, befinden sich die beiden Führungsrollen außer Eingriff mit der Materialbahn. Die Materialbahn, welche über eine starre zulaufseitige Führungsrolle zugeführt wird, verläuft in dieser Position mit einem bestimmten Rest-Umschlingungswinkel um die Heizwalze zu einer ablaufseitigen starren Führungsrolle.In a position that defines the minimum wrap angle the two guide rollers are out of engagement with the material web. The material web, which is fed via a rigid feed-side guide roller runs in this position with a certain remaining wrap angle the heating roller to a discharge-side rigid guide roller.

Die beiden verschwenkbaren Führungsrollen können aus dieser Position in Umfangsrichtung verschwenkt werden, bis die in Schwenkrichtung vordere Umlenkrolle in Eingriff mit der Materialbahn kommt. Werden die beiden Führungen weiter verschwenkt, so vergrößert sich der Umschlingungswinkel entsprechend. Um ein Schleifen des Bahntrums zwischen der starren zulaufseitigen Führungsrolle und der den Umschlingungswinkel definierenden Rolle zu vermeiden, wird dieses Bahntrum mit der zweiten schwenkbaren Führungsrolle ab Überschreiten eines gewissen Verschwenkwinkels (gerechnet ab der Position mit minimalem Umschlingungswinkel) in einem ausreichenden Abstand von der Heizwalze gehalten.The two pivotable guide rollers can be circumferentially from this position be pivoted until the front deflection roller in the swivel direction comes into engagement with the material web. Will the two guides pivoted further, the wrap angle increases accordingly. To grind the web strand between the rigid inlet-side guide roller and to avoid the role defining the wrap angle this track strand with the second swivel guide roller from crossing a certain swivel angle (calculated from the position with minimal Wrap angle) held at a sufficient distance from the heating roller.

Mit dieser bekannten Heizvorrichtung wird ein maximaler Umschlingungswinkel ermöglicht. Des Weiteren gewährleistet diese Ausführungsform in der Position mit dem minimalen Umschlingungswinkel (Rest-Umschlingungswinkel) ein äußerst einfaches Zuführen der zu beheizenden Materialbahn. Denn diese muss lediglich zwischen der Umfangsfläche der Heizwalze und den beiden verschwenkbaren Führungsrollen hindurchgeführt werden.With this known heating device, a maximum wrap angle enables. Furthermore, this embodiment ensures in position with the minimum wrap angle (remaining wrap angle) extremely easy feeding of the material web to be heated. Because this must only between the peripheral surface of the heating roller and the two pivotable Guide rollers are passed through.

Nachteilig bei dieser Heizvorrichtung ist jedoch, dass ein gewisser Rest-Umschlingungswinkel verbleibt und demzufolge der Materialbahn unvermeidbar eine bestimmte minimale Wärmeenergie zugeführt wird.A disadvantage of this heating device, however, is that a certain residual wrap angle remains and consequently the material web is unavoidable a certain minimum thermal energy is supplied.

Aus der DE-OS 15 11 061 ist des Weiteren eine Vorrichtung zum Präparieren von zu verleimendem bandförmigen Material, wie Wellpappe, bekannt, bei der die Materialbahn ebenfalls um eine verschwenkbare Führungsrolle geführt wird. In der Position, in welcher bei Verwendung einer einzigen Führungsrolle ein minimaler Umschlingungswinkel entstünde, greift bei dieser bekannten Vorrichtung eine weitere Führungsrolle ein, welche in dieser Position die Materialbahn vollkommen von der Umfangsfläche der Heizwalze abhebt. In dieser Position mit Null-Umschlingungswinkel verläuft die Materialbahn S-förmig zwischen den beiden Führungsrollen. Die in der Position mit Null-Umschlingungswinkel die Materialbahn abhebende Führungsrolle ist wiederum starr mit der den Umschlingungswinkel definierenden Führungsrolle verbunden. Beide Führungsrollen sind mittels eines verschwenkbaren Arms um die Achse der Heizwalze schwenkbar. Bei dieser bekannten Vorrichtung kann somit in der Position mit Null-Umschlingungswinkel die Energiezufuhr zur Materialbahn vollkommen ausgeschaltet werden.DE-OS 15 11 061 also describes a device for preparation of tape-like material to be glued, such as corrugated cardboard, known in the the material web is also guided around a pivotable guide roller. In the position in which a single guide roller is used minimal wrap angle would arise in this known device another guide role, which in this position is the material web completely stands out from the peripheral surface of the heating roller. In this position with a zero wrap angle, the material web runs in an S-shape between the two leadership roles. The one in the zero wrap angle position the material web lifting leading role is again rigidly connected to the guide roller defining the wrap angle. Both guide rollers are pivotable about the axis the heating roller can be swiveled. In this known device can thus Position with zero wrap angle the energy supply to the material web be completely switched off.

Nachteilig bei dieser bekannten Vorrichtung ist jedoch, dass nur ein relativ geringer maximaler Umschlingungswinkel erreichbar ist Eine Vergrößerung der beheizten Länge ist bei dieser bekannten Ausführungsform nur durch eine Vergrößerung des Heizwalzendurchmessers erreichbar. Dies ist mit beträchtlichen Kosten verbunden.A disadvantage of this known device, however, is that only a relatively small one maximum wrap angle is achievable An increase in heated length is in this known embodiment only by an increase of the heating roller diameter. This is considerable Associated costs.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine Heizvorrichtung für eine bewegte Materialbahn, insbesondere einen Vorheizer für eine Wellpappenanlage, zu schaffen, bei der mit möglichst geringem Aufwand eine maximale beheizte Länge der Materialbahn erreichbar ist und bei der gleichzeitig die beheizte Länge auf einfache Weise bis auf null variiert werden kann.Starting from this prior art, the invention is based on the object a heating device for a moving material web, in particular one To create a preheater for a corrugated cardboard system with as little as possible Effort a maximum heated length of the material web is achievable and where at the same time the heated length can be easily varied to zero can be.

Die Erfindung löst diese Aufgabe mit den Merkmalen des Patentanspruchs 1.The invention solves this problem with the features of claim 1.

Durch das erfindungsgemäße Vorsehen einer dritten Führung, die selbstverständlich wiederum als Führungsrolle ausgebildet sein kann, bei einer Heizvorrichtung gemäß der DE 23 02 449 C3, werden sowohl der Vorteil eines maximal erreichbaren Umschlingungswinkels (und damit einer maximalen beheizbaren Länge der Materialbahn) und andererseits das Variieren des Umschlingungswinkels bzw. der beheizbaren Länge bis auf null erreicht. By providing a third guide according to the invention, which goes without saying can in turn be designed as a guide roller in a heating device According to DE 23 02 449 C3, both the advantage of a maximum achievable wrap angle (and thus a maximum heatable Length of the material web) and on the other hand varying the wrap angle or the heatable length reached to zero.

Nach der bevorzugten Ausfühnmgsform der Erfindung sind sämtliche Führungen mit einem um die Achse der Heizwalze verschwenkbaren Trägerteil verbunden. Alle Führungen können dabei denselben Abstand vom Umfang der Heizwalze aufweisen.According to the preferred embodiment of the invention, all of the guides are connected to a support part pivotable about the axis of the heating roller. All guides can be the same distance from the circumference of the heating roller exhibit.

Die dritte, die Materialbahn in der Position mit Null-Umschlingungswinkel abhebende Führung ist bei der bevorzugten Ausführungsform der Erfindung, in Umfangsrichtung der Heizwalze gesehen, in einem minimal zulässigen Abstand von der ersten Führung angeordnet. Hierdurch ergibt sich der Vorteil eines maximalen Umschlingungswinkels, da die drei gemeinsam verschwenkbaren Führungen um den maximal möglichen Winkel verschwenkbar sind, bevor die dritte Führung in Berührung mit dem zu- bzw. ablaufenden Trum der Materialbahn gerät. Selbstverständlich muss die dritte Führung in radialer Richtung (bezogen auf die Heizwalze) so angeordnet sein, dass in der Position mit Null-Umschlingungswinkel tatsächlich ein Abheben der Materialbahn an der Umfangsfläche der Heizwalze erfolgt.The third, lifting the material web in the position with zero wrap angle Leadership is in the preferred embodiment of the invention, in Seen circumferential direction of the heating roller, at a minimum allowable distance arranged by the first guide. This gives the advantage of maximum Wrap angle, since the three jointly pivotable guides are pivotable by the maximum possible angle before the third Guiding in contact with the incoming or outgoing run of the material web device. Of course, the third guide must refer to the radial direction ( on the heating roller) so that it is in the position with zero wrap angle actually a lifting of the material web on the peripheral surface the heating roller takes place.

Nach der bevorzugten Ausführungsform der Erfindung wird die Materialbahn über eine starre zulaufseitige Führung zugeführt und eine starre ablaufseitige Führung abgeführt, wobei die zulaufseitige und ablaufseitige Führung mit der Achse der Heizwalze im Wesentlichen auf einer Geraden liegen. Hierdurch ergibt sich der Vorteil eines maximal möglichen Umschlingungswinkels. Dieser beträgt ca. 270 bis 280°.According to the preferred embodiment of the invention, the material web fed via a rigid inlet-side guide and a rigid outlet-side Leadership removed, with the inlet and outlet side leadership with the Axis of the heating roller lie essentially on a straight line. This gives the advantage of a maximum possible wrap angle. This is approx. 270 to 280 °.

Nach einer Ausführungsform der Erfindung kann die dritte Führung, bezogen auf die Heizwalze, gegenüber der ersten Führung in radialer Richtung nach außen versetzt sein. Dabei werden die erste und dritte Führung in der Position des minimalen Umschlingungswinkels (Null-Umschlingungswinkels) S-förmig von der Materialbahn umschlungen.According to one embodiment of the invention, the third guide can be based on the heating roller, opposite the first guide in the radial direction to the outside be offset. The first and third guides are in the position of the minimum Wrap angle (zero wrap angle) S-shaped from the Material web wrapped around.

Wird bei dieser Ausführungsform die dritte Führung innerhalb des durch die Achsen der ersten und zweiten Führung und die Achse der Heizwalze definierten Mittelpunktswinkels angeordnet, so können die Führungen soweit verschwenkt werden, bis die erste Führung gerade nicht in Berührung mit dem zulaufseitigen bzw. ablaufseitigen Trum der Materialbahn gerät. Hierdurch ergibt sich ein maximaler Umschlingungswinkel.In this embodiment, the third guide within the through the Define axes of the first and second guide and the axis of the heating roller Arranged center point, the guides can be pivoted so far until the first guide is not in contact with the inlet side or run side run of the material web. This results in a maximum Wrap angle.

In der Position des Null-Umschlingungswinkels werden bei dieser Ausführungsform die erste und dritte Führung extrem S-förmig umschlungen. Hierdurch würde wiederum das Einfädeln der Materialbahn, beispielsweise nach einem Reißen, erschwert. Aus diesem Grund kann die dritte Führung aus der normalen Arbeitsstellung in eine Position, in Umfangsrichtung der Heizwalze gesehen, vor die erste Führung in eine Einfädelstellung überführbar sein. Dies kann vorzugsweise durch ein Verschwenken der dritten Führung um die Achse der ersten Führung erfolgen. Die dritte Führung kann dabei bevorzugt in der Einfädelstellung und/oder der Arbeitsstellung arretierbar ausgebildet sein.In the position of the zero wrap angle in this embodiment the first and third guides wrapped extremely S-shaped. This would again threading the material web, for example after tearing, difficult. For this reason, the third guide can leave the normal working position in a position, seen in the circumferential direction of the heating roller, in front of the first guide can be converted into a threading position. This can preferably by pivoting the third guide around the axis of the first guide respectively. The third guide can preferably be in the threading position and / or the working position can be designed to be lockable.

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

Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. In der Zeichnung zeigen:

Fig. 1
eine erste Ausführungsform der erfindungsgemäßen Heizvorrichtung mit drei Führungsrollen in der Position des Null-Umschlingungswinkels;
Fig. 2
die Ausführungsform in Fig. 1 in der Position mit maximalem Umschlingungswinkel und
Fig. 3
eine weitere Ausführungsform einer Heizvorrichtung nach der Erfindung, die den maximal möglichen Umschlingungswinkel gewährleistet.
The invention is explained in more detail below with reference to an embodiment shown in the drawing. The drawing shows:
Fig. 1
a first embodiment of the heating device according to the invention with three guide rollers in the position of the zero wrap angle;
Fig. 2
the embodiment in Fig. 1 in the position with the maximum wrap angle and
Fig. 3
a further embodiment of a heating device according to the invention, which ensures the maximum possible wrap angle.

Fig. 1 zeigt in einer schematischen Seitenansicht eine erste Ausführungsform einer Heizvorrichtung nach der Erfindung. Die Heizvorrichtung 1 umfasst eine Heizwalze 3, die in einem nur schematisch dargestellten Maschinengestell 5 gelagert und rotierbar angetrieben ist. Die Heizwalze 3 kann beispielsweise mittels Heißdampf beheizt werden.Fig. 1 shows a schematic side view of a first embodiment a heating device according to the invention. The heating device 1 comprises one Heating roller 3, which is shown in a machine frame 5 shown only schematically is stored and rotatably driven. The heating roller 3 can for example by means of Superheated steam can be heated.

Die Heizvorrichtung 1 umfasst des Weiteren drei Führungen 7, 9, 11, die vorzugsweise als Führungsrollen ausgebildet sein können.The heating device 1 further comprises three guides 7, 9, 11, which are preferably can be designed as guide rollers.

Der Heizvorrichtung 1 wird eine zu beheizende Materialbahn über eine stationäre zulaufseitige Führung 15 zugeführt und über eine ebenfalls stationäre ablaufseitige Führung 17 abgeführt. Die stationären Führungen 15, 17 können entweder in der Heizvorrichtung 1 integriert sein oder aber Bestandteil vor- bzw. nachgeordneter Maschinen bzw. Anlagenteile sein.The heating device 1 becomes a material web to be heated via a stationary one inlet-side guide 15 and supplied via an also stationary outlet-side Leadership 17 removed. The stationary guides 15, 17 can either in the heating device 1 may be integrated or a component upstream or downstream Be machines or system parts.

In der in Fig. 1 durchgezogen dargestellten Position ist die zu beheizende Materialbahn 13 zunächst der Führungsrolle 9 zugeführt und verläuft von dieser zur stationären ablaufseitigen Führungsrolle 17, ohne die Heizwalze 3 zu berühren. In dieser Position erfolgt somit praktisch keine Zuführung von Wärmeenergie zur Materialbahn 13 (abgesehen von der Strahlungswärme). In the position shown in solid lines in FIG. 1 is the material web to be heated 13 first fed to the guide roller 9 and runs from this to stationary outlet-side guide roller 17 without touching the heating roller 3. In this position there is practically no supply of thermal energy Material web 13 (apart from the radiant heat).

Die Führungsrollen 7, 9, 11 sind auf einem um die Achse A verschwenkbaren Teil 19 vorzugsweise drehbar gehalten. Selbstverständlich können auch an beiden Seiten der Heizwalze 3 entsprechende verschwenkbare Teile 19 vorgesehen sein, welche die Führungsrollen 7, 9, 11 beidseitig drehbar lagern. Die verschwenkbaren Seitenteile 19 können dann durch einen geeigneten Antrieb um die Achse A der Heizwalze 3 verschwenkt werden.The guide rollers 7, 9, 11 are on a pivotable about the axis A. Part 19 preferably held rotatably. Of course you can also do both On the side of the heating roller 3 corresponding pivotable parts 19 are provided be, which support the guide rollers 7, 9, 11 rotatably on both sides. The pivotable Side parts 19 can then by a suitable drive to the Axis A of the heating roller 3 can be pivoted.

Werden die drei Führungen 7, 9, 11 durch das Verschwenken des Trägerteils 19 in Pfeilrichtung (Fig. 1) in Umfangsrichtung der Heizwalze 3 bewegt, so legt sich die Materialbahn 13 mit zunehmendem Umschlingungswinkel an die Umfangsfläche der Heizwalze an. Mit zunehmendem Umschlingungswinkel vergrößert sich selbstverständlich die beheizte Länge der Materialbahn, wodurch bei konstanter Bahngeschwindigkeit die der Materialbahn 13 zugeführte Wärmemenge ansteigt. In Fig. ist eine weitere Zwischenposition der Führungsrollen 7, 9, 11 strichliert eingezeichnet. Diese Position entspricht in etwa einem Verschwenken der Führungen 7, 9, 11 um einen Verschwenkwinkel von 180°. In dieser Position wird die Materialbahn 13 von der zulaufseitigen stationären Führung 15 zunächst der Führungsrolle 7 zugeführt, umschlingt diese und verläuft dann zur Umfangsfläche der Heizwalze 3. Diese wird mit einem Umschlingungswinkel von ca. 180° umschlungen, bevor die Materialbahn 13 über die ablaufseitige stationäre Führungsrolle 17 abgeführt wird.Are the three guides 7, 9, 11 by pivoting the support member 19th moves in the direction of the arrow (Fig. 1) in the circumferential direction of the heating roller 3, so lies down the material web 13 with increasing wrap angle on the peripheral surface the heating roller. Enlarged with increasing wrap angle of course, the heated length of the material web, which ensures constant Web speed the amount of heat supplied to the material web 13 increases. A further intermediate position of the guide rollers 7, 9, 11 is shown in FIG shown in dashed lines. This position corresponds approximately to a pivoting the guides 7, 9, 11 by a pivoting angle of 180 °. In this position the web of material 13 is initially from the inlet-side stationary guide 15 fed to the guide roller 7, wraps around it and then runs to the peripheral surface the heating roller 3. This is wrapped with a wrap angle of approx. Wrapped 180 ° before the material web 13 over the outlet-side stationary Guide roller 17 is removed.

Fig. 2 zeigt den bei der Ausführungsform nach Fig. 1 maximalen Umschlingungswinkel αmax. In dieser Position der Führungsrollen 7, 9, 11 berührt die Führungsrolle 9 gerade nicht das ablaufseitige Trum der Materialbahn. Ein weiteres Verschwenken der Führungsrollen wäre zwar grundsätzlich möglich, würde jedoch dazu führen, dass das ablaufseitige Trum der Materialbahn 19 infolge des Kontakts mit der Führungsrolle 9 in einer Richtung ausgelenkt würde, in welcher dieses Trum immer weiter von der Umfangsfläche der Heizwalze 3 abgehoben würde. Somit bliebe der insgesamt erreichbare Umschlingungswinkel allenfalls konstant.FIG. 2 shows the maximum wrap angle α max in the embodiment according to FIG. 1. In this position of the guide rollers 7, 9, 11, the guide roller 9 just does not touch the run side run of the material web. A further pivoting of the guide rollers would in principle be possible, but would lead to the run-side run of the material web 19 being deflected due to the contact with the guide roll 9 in a direction in which this run would be lifted further and further from the peripheral surface of the heating roller 3. Thus, the overall wrap angle that can be achieved would remain constant at most.

In der in Fig. 2 dargestellten Position des maximal möglichen Umschlingungswinkels αmax wird die Führungswalze 7, welche den Umschlingungswinkel definiert, ebenso umschlungen wie in der in Fig. 1 strichliert dargestellten Zwischenposition. Allerdings verläuft in dieser Stellung des maximalen Umschlingungswinkels die Materialbahn 13 von der stationären zulaufseitigen Führung 15 zunächst zur Führungsrolle 11 und erst von dieser zur Führungsrolle 7. Die Führungsrolle 11 verhindert ein Berühren bzw. Schleifen des zuführseitigen Trums der Materialbahn 13 mit der Heizwalze bzw. der bereits um die Heizwalze geschlungenen Materialbahn.In the position of the maximum possible wrap angle α max shown in FIG. 2, the guide roller 7, which defines the wrap angle, is wrapped around as well as in the intermediate position shown in broken lines in FIG. 1. However, in this position of the maximum wrap angle, the material web 13 runs from the stationary inlet-side guide 15 first to the guide roller 11 and only from this to the guide roller 7. The guide roller 11 prevents the feed-side strand of the material web 13 from touching or grinding with the heating roller or material web already wrapped around the heating roller.

Aus den Fig. 1 und 2 wird somit deutlich, dass durch die Verwendung der drei Führungsrollen 7, 9, 11 sowohl ein Null-Umschlingungswinkel (Fig. 1) als auch ein großer maximaler Umschlingungswinkel αmax erreichbar ist.From FIGS. 1 and 2 it is thus clear that by using the three guide rollers 7, 9, 11 both a zero wrap angle (FIG. 1) and a large maximum wrap angle α max can be achieved.

Die in Fig. 3 dargestellte weitere Ausführungsform der Erfindung entspricht im Wesentlichen der Ausführungsform gemäß den Fig. 1 und 2. Jedoch wurde die Führungsrolle 9 so angeordnet, dass diese in der normalen Arbeitsposition, bezogen auf die Heizwalze 3, gegenüber der den Umschlingungswinkel definierenden Führungsrolle 7 im Wesentlichen radial nach außen versetzt ist.The further embodiment of the invention shown in FIG. 3 corresponds to Essentially the embodiment according to FIGS. 1 and 2. However, the Guide roller 9 arranged so that it is in the normal working position on the heating roller 3, opposite the one defining the wrap angle Guide roller 7 is offset substantially radially outwards.

Hierdurch ergibt sich zwar ein geringfügig größerer Platzbedarf für die Heizvorrichtung 1, jedoch ermöglicht diese Bauform einen noch größeren maximalen Umschlingungswinkel αmax. In der in Fig. 3 strichliert dargestellten Position des Null-Umschlingungswinkels ist die Materialbahn 13 extrem S-förmig um die Führungsrollen 7 bzw. 9 geführt, bevor die Materialbahn über die ablaufseitige stationäre Führung 17 abgeführt wird. Hierdurch würde das Einfädeln der Materialbahn 13 (praktisch unabhängig von der Stellung der Führungsrollen 7, 9, 11) erschwert. Um diesem Nachteil Abhilfe zu schaffen, kann die Führungsrolle 9 aus der in Fig. 3 strichliert dargestellten normalen Arbeitsposition in eine Einfädelstellung bewegbar sein. Dies kann beispielsweise durch eine schwenkbare Ausbildung der Führungsrolle 9 um die Achse der Führungsrolle 7 erreicht werden. Die Einfädelposition der Führungsrolle 9 ist in Fig. 3 gepunktet dargestellt. In dieser Position kann die Materialbahn 13 auf einfache Weise an der Außenseite der Führungsrolle 9 vorbei und zwischen die Innenseiten der Führungsrollen 7, 11 und dem Außenumfang der Heizwalze 3 hindurch eingefädelt werden.Although this results in a slightly larger space requirement for the heating device 1, this design enables an even larger maximum wrap angle α max . In the position of the zero wrap angle shown in dashed lines in FIG. 3, the material web 13 is guided in an extremely S-shaped manner around the guide rollers 7 and 9 before the material web is removed via the outlet-side stationary guide 17. This would make it difficult to thread the material web 13 (practically independently of the position of the guide rollers 7, 9, 11). In order to remedy this disadvantage, the guide roller 9 can be moved from the normal working position shown in broken lines in FIG. 3 into a threading position. This can be achieved, for example, by pivoting the guide roller 9 about the axis of the guide roller 7. The threading position of the guide roller 9 is shown in dotted lines in FIG. 3. In this position, the material web 13 can easily be threaded past the outside of the guide roller 9 and between the inside of the guide rollers 7, 11 and the outer circumference of the heating roller 3.

Um ein sicheres Einfädeln bzw. Arbeiten der Heizvorrichtung zu gewährleisten, kann die Führungsrolle 9 selbstverständlich in der Einfädelstellung bzw. in der normalen Arbeitsstellung arretierbar ausgebildet sein.In order to ensure safe threading or working of the heating device, can of course the guide roller 9 in the threading position or in the normal working position be designed lockable.

Diese in Fig. 3 dargestellte Ausführungsform hat den Vorteil, dass die Führungsrolle 7, welche den Umschlingungswinkel definiert, praktisch bis an das ablaufseitige Trum der Materialbahn 13 heran verschwenkt werden kann. Anders als bei der Ausführungsform nach den Fig. 1 und 2 wird der maximal erreichbare Umschlingungswinkel nicht durch die Führungsrolle 9 begrenzt.This embodiment shown in Fig. 3 has the advantage that the guide roller 7, which defines the wrap angle, practically up to the outlet side Run of the material web 13 can be pivoted. Different to in the embodiment according to FIGS. 1 and 2, the maximum achievable Wrap angle is not limited by the guide roller 9.

In dieser, in Fig. 3 durchgezogen dargestellten Stellung des maximal möglichen Umschlingungswinkels muss die Führungsrolle 11 selbstverständlich immer noch gewährleisten, dass das zulaufseitige Trum der Materialbahn 13 möglichst nicht in Kontakt mit der Umfangsfläche der Heizwalze 3 bzw. der darum geschlungenen Materialbahn gelangt. Die Position der Führungsrolle 11 kann hierzu in großen Grenzen frei gewählt werden.In this position, shown in solid lines in FIG. 3, of the maximum possible Of course, the wrap angle must always be the guide roller 11 still ensure that the run side run of the material web 13 if possible not in contact with the peripheral surface of the heating roller 3 or the looped around it Material web arrives. The position of the guide roller 11 can do this can be freely chosen within wide limits.

Claims (10)

  1. Heating apparatus for a moving material web, in particular a preheater for a corrugated board installation,
    a) having a rotating heating cylinder (3), around which the material web (13) to be heated is wrappable with a predetermined angle of wrap α, and
    b) having at least two guides (7, 11) for the material web, which are swingable jointly, while retaining their positions relative to one another, about the periphery of the heating cylinder (13) between a position defining the minimum angle of wrap and a position defining the maximum angle of wrap αmax,
    c) wherein the angle of wrap α is determined by the position of a first (7) of the at least two guides (7, 11) and
    d) wherein a second (11) of the at least two guides (7, 11) is so disposed relative to the first guide (7) that in the position of the guides (7, 11) defining the maximum angle of wrap αmax the material web (13) not wrapped directly around the heating cylinder (3) is held at a distance from the heating cylinder (3) by the second guide (11),
    characterized in
    e) that a third guide (9) is provided, which in the position defining the minimum angle of wrap lifts the web (13) completely off the periphery of the heating cylinder (3).
  2. Heating apparatus according to claim 1, characterized in that one or more or all of the guides take the form of guide rollers (7, 9, 11).
  3. Heating apparatus according to claim 1 or 2, characterized in that all of the guides (7, 9, 11) are connected to a carrier part (19), which is swingable about the axis (A) of the heating cylinder (3).
  4. Heating apparatus according to one of the preceding claims, characterized in that all of the guides (7, 9, 11) are at the same distance from the periphery of the heating cylinder (3).
  5. Heating apparatus according to one of the preceding claims, characterized in that the third guide (9), viewed in peripheral direction of the heating cylinder (3), is at a minimum permissible distance from the first guide (7).
  6. Heating apparatus according to one of the preceding claims, characterized in that, in relation to the direction of motion of the material web (13), a stationary inlet-side guide (15) and a stationary outlet-side guide (17) are provided and that the stationary guides (15, 17) are so disposed that the guides and the axis (A) of the heating cylinder (3) lie substantially on a straight line.
  7. Heating apparatus according to one of claims 1 to 3, 5 and 6, characterized in that the third guide (9), in relation to the heating cylinder (3), is offset radially outwards relative to the first guide (7), wherein in the position of the minimum angle of wrap the material web (13) is wrapped in an S-shape around the first (7) and third (9) guide.
  8. Heating apparatus according to claim 7, characterized in that the third guide (9) is disposed within the angle at centre, which is defined by the axes of the first (7) and second (11) guide and the axis (A) of the heating cylinder (3).
  9. Heating apparatus according to claim 7 or 8, characterized in that, to facilitate threading of the material web (13), the third guide (9) is transferrable, preferably swingable, out of its operating position into a position, viewed in peripheral direction of the heating cylinder (3), in front of the first guide (7) (threading position).
  10. Heating apparatus according to claim 9, characterized in that the third guide (9) is lockable in the threading position and/or the operating position.
EP99927657A 1998-04-16 1999-04-13 Device for heating a moving material strip, especially preheater for a corrugated board machine Expired - Lifetime EP1071557B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19816931A DE19816931C2 (en) 1998-04-16 1998-04-16 Heating device for a moving material web, in particular preheaters for a corrugated cardboard system
DE19816931 1998-04-16
PCT/DE1999/001105 WO1999052707A1 (en) 1998-04-16 1999-04-13 Device for heating a moving material strip, especially preheater for a corrugated board machine

Publications (2)

Publication Number Publication Date
EP1071557A1 EP1071557A1 (en) 2001-01-31
EP1071557B1 true EP1071557B1 (en) 2001-10-24

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EP99927657A Expired - Lifetime EP1071557B1 (en) 1998-04-16 1999-04-13 Device for heating a moving material strip, especially preheater for a corrugated board machine

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US (1) US6485402B1 (en)
EP (1) EP1071557B1 (en)
DE (2) DE19816931C2 (en)
WO (1) WO1999052707A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19944267A1 (en) * 1999-09-15 2001-03-22 Voith Paper Patent Gmbh Method and device for drying a material web
CA2664772C (en) * 2009-05-13 2010-02-16 The Procter & Gamble Company Label applicator having a heat idler
CA2664771C (en) * 2009-05-13 2010-02-16 The Procter & Gamble Company Label applicator having a vacuum box
EP2433769B1 (en) * 2010-09-27 2013-04-03 HOMAG Holzbearbeitungssysteme AG Device and process for coating a workpiece

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Publication number Priority date Publication date Assignee Title
US3004880A (en) * 1959-10-28 1961-10-17 Honeywell Regulator Co Control method and apparatus
DE6940695U (en) * 1969-10-18 1970-05-27 Theodor Kreimer Fa DEVICE FOR HEAT TREATMENT OF PILOT FABRICS
US3694927A (en) * 1970-09-30 1972-10-03 Kimberly Clark Co Adhesive curing device
DE2302449C3 (en) * 1973-01-18 1980-06-04 Bhs-Bayerische Berg-, Huetten- Und Salzwerke Ag, 8000 Muenchen Heating device for a moving material web, in particular a preheater for a paper or cardboard web in corrugated cardboard systems
US3981758A (en) * 1974-11-04 1976-09-21 Koppers Company, Inc. Process control system for corrugators
US4038122A (en) * 1975-07-07 1977-07-26 Westvaco Corporation Method and apparatus for fabricating corrugated board from poly-coated paper
US3960475A (en) * 1975-07-08 1976-06-01 Westvaco Corporation Angular indexing mechanism
US4071392A (en) * 1977-01-10 1978-01-31 Westvaco Corporation Automatically controlled machine for making double-faced polyboard
JPH0617536Y2 (en) * 1989-03-06 1994-05-11 株式会社磯輪鉄工所 Preheater heating amount adjustment device for corrugated board manufacturing machine
DE19506779A1 (en) * 1995-02-27 1996-08-29 Bhs Corr Masch & Anlagenbau Method and device for heating a moving web, in particular corrugated cardboard web
US5894681A (en) * 1995-05-01 1999-04-20 Inland Container Corporation Automated fabrication of corrugated paper products
US6149751A (en) * 1996-11-01 2000-11-21 Marquip, Inc. Low pressure single facer

Also Published As

Publication number Publication date
EP1071557A1 (en) 2001-01-31
DE19816931C2 (en) 2001-12-13
DE19816931A1 (en) 1999-10-21
WO1999052707A1 (en) 1999-10-21
US6485402B1 (en) 2002-11-26
DE59900354D1 (en) 2001-11-29

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