EP3377431B1 - Spool - Google Patents

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Publication number
EP3377431B1
EP3377431B1 EP16797859.2A EP16797859A EP3377431B1 EP 3377431 B1 EP3377431 B1 EP 3377431B1 EP 16797859 A EP16797859 A EP 16797859A EP 3377431 B1 EP3377431 B1 EP 3377431B1
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EP
European Patent Office
Prior art keywords
coating
spool
axially
axially central
coatings
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Application number
EP16797859.2A
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German (de)
French (fr)
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EP3377431A1 (en
Inventor
Malte Müller
Matthias Wohlfahrt
Ewald Wetschenbacher
Ralf-Harald Preising
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Voith Patent GmbH
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Voith Patent GmbH
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Publication of EP3377431A1 publication Critical patent/EP3377431A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/28—Arrangements for positively securing ends of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/28—Attaching the leading end of the web to the replacement web-roll core or spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/04—Kinds or types
    • B65H75/08—Kinds or types of circular or polygonal cross-section
    • B65H75/10—Kinds or types of circular or polygonal cross-section without flanges, e.g. cop tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2401/00—Materials used for the handling apparatus or parts thereof; Properties thereof
    • B65H2401/10—Materials
    • B65H2401/11—Polymer compositions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2401/00—Materials used for the handling apparatus or parts thereof; Properties thereof
    • B65H2401/10—Materials
    • B65H2401/13—Coatings, paint or varnish
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/40—Holders, supports for rolls
    • B65H2405/45—Shafts for winding/unwinding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/50—Storage means for webs, tapes, or filamentary material
    • B65H2701/51—Cores or reels characterised by the material
    • B65H2701/515—Cores or reels characterised by the material assembled from parts made of different materials

Definitions

  • the invention relates to a reel for winding a fibrous web comprising a reel core with a coating forming the outer surface of the reel.
  • the entire fibrous web or a strip thereof is discharged into the pulper in the machine cellar.
  • the fibrous web on the carrier drum is guided up to a scraper thereof.
  • the object of the invention is to improve the winding and unwinding of the fibrous web and the winding quality.
  • the coating can be better adapted to the requirements of the winding process.
  • the outer surface of the drum is also formed by three coatings arranged axially next to one another.
  • the axial length of a or the middle coating should be between 10 and 200 cm, preferably between 30 and 100 cm.
  • one or the axially central coating has a smoother surface than the outer coatings.
  • the higher adhesion is intended to increase the adhesion of the tip of the fibrous web at the start of winding.
  • the tip that is mostly glued on can also be removed more easily from the reel when the reel is unrolled.
  • the roughness R a of the smoother, middle coating should preferably be less than 0.2 ⁇ m.
  • axially outer coatings satisfies a roughness Ra of 0.6 microns or more.
  • At least one, preferably an axially central, coating should at least partially consist of Teflon.
  • the entire coating can be made of Teflon.
  • a tape in particular a fabric tape, is coated with Teflon and forms the coating.
  • one or the axially middle coating has a higher elasticity than the axially outer coatings. Due to the higher compressibility in the radial direction, the tip of the fibrous web can be pressed more easily into the coating of the reel when it is wound up. This prevents the tip of the fibrous web from forming in the subsequently wound fibrous web and leading to markings there.
  • Manufacturing is particularly simple if one or the axially central coating is supported directly on the drum core.
  • one or the axially central coating may be embedded in a coating that extends over the entire axial extent of the drum core.
  • two radially superimposed layers of one or the axially central coating can provide the radially outer layer for a smooth outer surface and the radially underlying layer for the required compressibility and elasticity.
  • one or the axially central coating has an outer diameter, preferably 0.05 to 0.25 mm larger, than the outer coatings.
  • the larger diameter in the axial center of the spool ensures a safe and intensive gap formation during winding and thus also the increased pressing of the tip of the fibrous web against the spool.
  • an axially central coating is applied to a coating that extends over the entire axial extent of the drum core.
  • the axially outer coatings should consist of rubber or PU.
  • the application of one or the middle coating can be facilitated if it is formed by a fabric tape.
  • the fibrous web 2 is wound onto a reel 1 in the form of a reel core 3 made of steel, in particular with a rubber or plastic coating.
  • the drum 1 is driven on its periphery by a support drum 8.
  • the two axes of the drum 1 are each rotatably supported in one arm of a transfer unit. Before the reel 1 is full, an empty reel 1 is guided over other arms and brought to machine speed with the carrying drum 8.
  • the empty drum 1 is placed on the carrying drum 8 and the fibrous web 2 and at the same time the full drum 1 is guided away from the carrying drum 8.
  • the fibrous web 2 can be separated in different ways.
  • the separation and application of the fibrous web 2 to the empty drum 1 is usually carried out with the support of an air or water jet.
  • the full drum 1 must then be braked and transported to an end position.
  • the full reel 1 can then be easily lifted out of the machine with a crane.
  • the fibrous web 2 is torn off or also when the drum is changed, it may be necessary to guide the fibrous web 2 or a strip thereof into the machine cellar and there into a pulper for reprocessing.
  • the fibrous web 2 is passed through the non-closed winding gap between the empty drum 1 and the carrying drum 8 and there to a scraper 9 of the carrying drum 8.
  • the scraper 9 separates the fibrous web 2 or the corresponding strip from the outer surface of the support drum 8 and then guides it down into the machine cellar.
  • the outer lateral surface of the spool 1 is formed by three circumferential and axially adjacent coatings 4, 5.
  • the middle coating 5 When viewed in the axial direction, the middle coating 5 has an expansion in the axial direction between 30 and 100 cm.
  • a tip of the fibrous web 2 which is generally present in the middle of the web, is brought into contact with the empty reel 1 and wound up, the web width increasing continuously.
  • this tip of the fibrous web 2 is usually provided with adhesive.
  • the axial, middle coating 5 is formed by a Teflon adhesive tape, which is embedded in the axially continuous coating 4 made of hard PU or rubber. Accordingly, this continuous coating 4 also forms the two axially lateral coatings 4 of the lateral surface.
  • the Teflon adhesive tape can easily be wound onto an axially central recess in the continuous coating 4. Because of the smoother surface of the Teflon adhesive tape compared to the lateral coatings 4, the tip of the fibrous web 2 adheres to the outer surface of the drum 1 much more strongly during the winding. At the same time, however, the often glued-on tip of the fibrous web 1 can more easily be detached from the reel 1 during unwinding.
  • the axially central coating 5 in the form of a Teflon adhesive tape can be used accordingly Figure 7 also applied, in particular glued, to the axially continuous coating 4 made of hard PU or rubber. The axially central coating 5 projects slightly beyond the adjacent coatings 4 by 0.05 to 0.25 mm, but this does not affect the winding quality.
  • the axially central coating 5 is designed according to FIG Figure 5 formed by two radially superimposed layers 6.7. While the radially outer layer 6 is in turn formed by a smooth Teflon adhesive tape to form a smooth outer surface, the radially inner layer 7 consists of a PU tape with a silicone coating.
  • This radially inner layer 7 is considerably more elastic than the radially overlying layer 6 and the axially continuous coating 4 of the drum core 3.
  • the tip of the fibrous web 2 can be pressed more easily into the drum 2 during winding, so that this tip does not form in the wound fibrous web 1 and leads to markings.
  • the middle coating 5 applied directly to the drum core 3.
  • the middle coating 5 can be more elastic than and / or have a smoother lateral surface than the two side coatings 4.
  • drum 1 shown has the axially central coating 5 as in Figure 7 a larger outer diameter than the axially outer coatings 4.
  • the larger diameter ensures a safe and intensive gap formation with the support drum 8 for the stronger pressing of the tip of the fibrous web 2 against the reel 1 during winding.
  • the transition from the smaller diameter of the side coatings 4 to the larger diameter of the middle coating 5 should be gradual.
  • the diameter of the middle coating 5 here is only 0.1 to 2 mm larger than the diameter of the side coatings 4.
  • the thickness of the middle coating 5 embedded in the axially continuous coating 4 is between 0.1 and 5 mm, in particular between 0.1 and 2.5 mm.
  • the total thickness of the coatings 4.5 on the drum core 3 is 5-20 mm.

Landscapes

  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Description

Die Erfindung betrifft einen Tambour zum Aufwickeln einer Faserstoffbahn umfassend einen Tambour-Kern mit einer, die Mantelfläche des Tambours bildenden Beschichtung.The invention relates to a reel for winding a fibrous web comprising a reel core with a coating forming the outer surface of the reel.

In der Papierindustrie werden Papierbahnen auf einen Tambour aufgerollt und so gespeichert. Dabei ergibt sich das Problem, dass Bahnenden sich insbesondere bei einem Tambourwechsel frei bewegen, sich dadurch losreißen können und möglicherweise Schäden verursachen.
In der DE 100 85 234 T1 werden ein Verfahren und eine Vorrichtung für einen Tambourwechsel beschrieben, bei dem eine, auf einen Tambour aufzuwickelnde Papierbahn zur Bildung eines Wickels durch zumindest die Drehkraft einer Tragtrommel und die Spaltlast bewegt wird, wobei in Zusammenhang mit dem Tambourwechsel ein neuer Tambour oberhalb der Tragtrommel mit dieser in Kontakt gebracht wird.
Um beim Schließen des Spalts einen harten Schlag zu vermeiden, sind die Tamboure überwiegend mit einer Gummischicht überzogen.
Aus der EP 1 310 445 A2 sowie der WO 2007/088246 A1 sind Tamboure mit unterschiedlichen Beschichtungen bekannt.In the paper industry, paper webs are rolled up on a spool and thus stored. The problem arises here that web ends move freely, especially when changing the reel, can tear themselves away and possibly cause damage.
In the DE 100 85 234 T1 A method and a device for a reel change are described, in which a paper web to be wound onto a reel is moved to form a reel by at least the rotational force of a carrying drum and the nip load is brought into contact.
In order to avoid a hard blow when closing the gap, the reels are mostly covered with a rubber layer.
From the EP 1 310 445 A2 as well as the WO 2007/088246 A1 Drums with different coatings are known.

Zur Fixierung des Bahnendes am leeren Tambour ist es üblich die Bahnenden vorher mit einem Klebestreifen oder zähflüssigen Kleber zu versehen.To fix the web end to the empty reel, it is customary to provide the web ends beforehand with an adhesive strip or viscous adhesive.

Bei einer Störung oder beim Überführvorgang vom vollen auf den leeren Tambour wird die gesamte Faserstoffbahn oder ein Streifen davon in den Pulper im Maschinenkeller abgeführt.
Um dies sicher zu gewährleisten, wird die Faserstoffbahn an der Tragtrommel bis zu einem Schaber derselben geleitet.In the event of a malfunction or during the transfer process from full to empty reel, the entire fibrous web or a strip thereof is discharged into the pulper in the machine cellar.
In order to ensure this reliably, the fibrous web on the carrier drum is guided up to a scraper thereof.

Die Aufgabe der Erfindung ist es das Auf- und Abwickeln der Faserstoffbahn sowie die Wickelqualität zu verbessern.The object of the invention is to improve the winding and unwinding of the fibrous web and the winding quality.

Erfindungsgemäß wurde die Aufgabe durch den Tambour gemäß dem Anspruch 1 gelöst.According to the invention the object was achieved by the drum according to claim 1.

Hierdurch kann die Beschichtung besser an die Erfordernisse des Wickelvorgangs angepasst werden.As a result, the coating can be better adapted to the requirements of the winding process.

Da sich insbesondere hinsichtlich der Bahnränder und der Bahnspitze unterschiedliche Anforderungen ergeben, ist es von Vorteil, wenn die Mantelfläche des Tambours auch von drei axial nebeneinander angeordneten Beschichtungen gebildet wird.Since there are different requirements, in particular with regard to the web edges and the web tip, it is advantageous if the outer surface of the drum is also formed by three coatings arranged axially next to one another.

Im Hinblick auf die gesonderte Behandlung der Spitze der Faserstoffbahn sollte die axiale Länge einer bzw. der mittleren Beschichtung zwischen 10 und 200 cm, vorzugsweise zwischen 30 und 100 cm liegen.With regard to the separate treatment of the tip of the fibrous web, the axial length of a or the middle coating should be between 10 and 200 cm, preferably between 30 and 100 cm.

Dabei ist es vorteilhaft, wenn eine bzw. die axial mittlere Beschichtung eine glattere Oberfläche als die äußeren Beschichtungen aufweist. Durch die höhere Adhäsion soll die Haftung der Spitze der Faserstoffbahn beim Beginn des Aufwickelns verstärkt werden.It is advantageous if one or the axially central coating has a smoother surface than the outer coatings. The higher adhesion is intended to increase the adhesion of the tip of the fibrous web at the start of winding.

Zudem lässt sich infolge der glatteren Beschichtung im Bereich der Spitze der Faserstoffbahn die meist angeklebte Spitze beim Abrollen des Tambours auch leichter vom Tambour entfernen.In addition, due to the smoother coating in the area of the top of the fibrous web, the tip that is mostly glued on can also be removed more easily from the reel when the reel is unrolled.

Hierzu sollte die Rauigkeit Ra der glatteren, mittleren Beschichtung vorzugsweise kleiner als 0,2 µm sein. Bei den weniger glatten, axial äußeren Beschichtungen genügt eine Rauigkeit Ra von 0,6 µm oder mehr.For this purpose, the roughness R a of the smoother, middle coating should preferably be less than 0.2 μm. In the less smooth, axially outer coatings satisfies a roughness Ra of 0.6 microns or more.

Zur Realisierung der erforderlichen Glätte sollte wenigstens eine, vorzugsweise eine axial mittlere Beschichtung zumindest teilweise aus Teflon bestehen.To achieve the required smoothness, at least one, preferably an axially central, coating should at least partially consist of Teflon.

Beispielsweise kann die gesamte Beschichtung aus Teflon bestehen. Es kann aber ebenso vorteilhaft sein, wenn ein Band, insbesondere ein Gewebeband mit Teflon beschichtet ist und die Beschichtung bildet.For example, the entire coating can be made of Teflon. However, it can also be advantageous if a tape, in particular a fabric tape, is coated with Teflon and forms the coating.

Des Weiteren ist es ergänzend oder alternativ von Vorteil, wenn eine bzw. die axial mittlere Beschichtung eine höhere Elastizität als die axial äußeren Beschichtungen besitzt.
Über die höhere Kompressibilität in radialer Richtung kann sich so die Spitze der Faserstoffbahn beim Anwickeln leichter in die Beschichtung des Tambours eindrücken. Damit wird verhindert, dass sich die Spitze der Faserstoffbahn in der nachfolgend aufgewickelten Faserstoffbahn abbildet und dort zu Markierungen führt.Furthermore, it is additionally or alternatively advantageous if one or the axially middle coating has a higher elasticity than the axially outer coatings.
Due to the higher compressibility in the radial direction, the tip of the fibrous web can be pressed more easily into the coating of the reel when it is wound up. This prevents the tip of the fibrous web from forming in the subsequently wound fibrous web and leading to markings there.

Besonders einfach gestaltet sich die Herstellung, wenn sich eine bzw. die axial mittlere Beschichtung direkt auf dem Tambour-Kern abstützt.Manufacturing is particularly simple if one or the axially central coating is supported directly on the drum core.

Alternativ ist es aber auch möglich, dass eine bzw. die axial mittlere Beschichtung in eine, über die gesamte axiale Erstreckung des Tambour-Kerns reichende Beschichtung eingebettet ist.Alternatively, however, it is also possible for one or the axially central coating to be embedded in a coating that extends over the entire axial extent of the drum core.

Falls die Aufgaben der Beschichtung vor allem im mittleren Bereich zu anspruchsvoll sind, so kann es vorteilhaft sein, diese Aufgaben auf mehrere radial übereinander liegende, separate Schichten zu verteilen.
Von insbesondere zwei radial übereinander liegenden Schichten einer bzw. der axial mittleren Beschichtung kann so die radial äußere für eine glatte Mantelfläche und die radial darunterliegende Schicht für die erforderliche Kompressibilität und Elastizität sorgen.If the tasks of the coating are too demanding, especially in the middle area, it can be advantageous to distribute these tasks over several separate layers lying radially one above the other.
In particular, two radially superimposed layers of one or the axially central coating can provide the radially outer layer for a smooth outer surface and the radially underlying layer for the required compressibility and elasticity.

Außerdem kann es noch vorteilhaft sein, wenn eine bzw. die axial mittlere Beschichtung einen, vorzugsweise um 0,05 bis 0,25 mm größeren Außendurchmesser als die äußeren Beschichtungen hat. Der größere Durchmesser in der axialen Mitte des Tambours gewährleistet eine sichere und intensive Spaltbildung beim Anwickeln und so auch das verstärkte Andrücken der Spitze der Faserstoffbahn an den Tambour.It can also be advantageous if one or the axially central coating has an outer diameter, preferably 0.05 to 0.25 mm larger, than the outer coatings. The larger diameter in the axial center of the spool ensures a safe and intensive gap formation during winding and thus also the increased pressing of the tip of the fibrous web against the spool.

Alternativ zur Einbettung kann es auch von Vorteil sein, wenn eine axial mittlere Beschichtung auf eine, über die gesamte axiale Erstreckung des Tambour-Kerns reichende Beschichtung aufgebracht ist.As an alternative to embedding, it can also be advantageous if an axially central coating is applied to a coating that extends over the entire axial extent of the drum core.

Im Interesse geringer Herstellkosten und einer relativ hoher Verschleißfestigkeit sollten die axial äußeren Beschichtungen aus Gummi oder PU bestehen.In the interest of low manufacturing costs and a relatively high wear resistance, the axially outer coatings should consist of rubber or PU.

Das Aufbringen einer bzw. der mittleren Beschichtung kann erleichtert werden, wenn diese von einem Gewebeband gebildet wird.The application of one or the middle coating can be facilitated if it is formed by a fabric tape.

Nachfolgend soll die Erfindung an mehreren Anwendungsbeispielen näher erläutert werden.
In der beigefügten Zeichnung zeigt:

Figur 1:
einen schematischen Querschnitt durch eine Wickelmaschine beim Abführen der Faserstoffbahn 2 in den Pulper des Maschinenkellers;
Figur 2:
beim Aufwickeln;
Figuren 4-7:
einen Querschnitt durch unterschiedlich beschichtete Tamboure 1.
In the following, the invention will be explained in more detail using several application examples.
The attached drawing shows:
Figure 1:
a schematic cross section through a winding machine during the removal of the fibrous web 2 in the pulper of the machine cellar;
Figure 2:
when winding up;
Figures 4-7:
a cross section through differently coated drum 1.

In derartigen Maschinen wird die Faserstoffbahn 2 auf einen Tambour 1 in Form eines Tambour-Kerns 3 aus Stahl mit insbesondere Gummi- oder Kunststoffbeschichtung aufgewickelt. Während dieses in Figur 2 gezeigten Aufrollvorgangs wird der Tambour 1 an seinem Umfang von einer Tragtrommel 8 angetrieben.In such machines, the fibrous web 2 is wound onto a reel 1 in the form of a reel core 3 made of steel, in particular with a rubber or plastic coating. During this in Figure 2 shown reeling process, the drum 1 is driven on its periphery by a support drum 8.

Dabei werden die beiden Achsen des Tambours 1 in je einem Arm einer Transfereinheit rotierbar gelagert. Bevor der Tambour 1 voll ist, wird ein leerer Tambour 1 über andere Arme geführt, mit der Tragtrommel 8 auf Maschinengeschwindigkeit gebracht.The two axes of the drum 1 are each rotatably supported in one arm of a transfer unit. Before the reel 1 is full, an empty reel 1 is guided over other arms and brought to machine speed with the carrying drum 8.

Zum Tambourwechsel wird der leere Tambour 1 auf die Tragtrommel 8 und die Faserstoffbahn 2 angelegt und gleichzeitig der volle Tambour 1 von der Tragtrommel 8 weggeführt.
Hierbei kann die Faserstoffbahn 2 auf unterschiedliche Art und Weise getrennt werden. Meist erfolgen die Trennung und das Anlegen der Faserstoffbahn 2 an den leeren Tambour 1 mit Unterstützung eines Luft- oder Wasserstrahls.To change the drum, the empty drum 1 is placed on the carrying drum 8 and the fibrous web 2 and at the same time the full drum 1 is guided away from the carrying drum 8.
Here, the fibrous web 2 can be separated in different ways. The separation and application of the fibrous web 2 to the empty drum 1 is usually carried out with the support of an air or water jet.

Der volle Tambour 1 muss anschließend abgebremst und in eine Endposition transportiert werden.
Im Anschluss kann der volle Tambour 1 problemlos mit einem Kran aus der Maschine gehoben werden.The full drum 1 must then be braked and transported to an end position.
The full reel 1 can then be easily lifted out of the machine with a crane.

Bei einem Abriss der Faserstoffbahn 2 oder aber auch beim Tambourwechsel kann es sich erforderlich machen, die Faserstoffbahn 2 oder einen Streifen davon in den Maschinenkeller und dort in einen Pulper zur Wiederaufbereitung zu führen.If the fibrous web 2 is torn off or also when the drum is changed, it may be necessary to guide the fibrous web 2 or a strip thereof into the machine cellar and there into a pulper for reprocessing.

Wie in Figur 1 zu erkennen, wird dabei die Faserstoffbahn 2 durch den nichtgeschlossenen Wickelspalt zwischen leerem Tambour 1 und Tragtrommel 8 und dort bis zu einem Schaber 9 der Tragtrommel 8 geleitet.
Der Schaber 9 trennt die Faserstoffbahn 2 oder den entsprechenden Streifen von der Mantelfläche der Tragtrommel 8 und leitet diese dann nach unten in den Maschinenkeller.As in Figure 1 to recognize, the fibrous web 2 is passed through the non-closed winding gap between the empty drum 1 and the carrying drum 8 and there to a scraper 9 of the carrying drum 8.
The scraper 9 separates the fibrous web 2 or the corresponding strip from the outer surface of the support drum 8 and then guides it down into the machine cellar.

Diese Anordnung ist nicht nur einfach und robust sondern auch funktionssicher.This arrangement is not only simple and robust but also reliable.

Um den Wickelvorgang allgemein, insbesondere aber das Anwickeln und das Abwickeln der Spitze der Faserstoffbahn zu verbessern, wird die äußere Mantelfläche des Tambours 1 von drei in Umfangsrichtung umlaufenden und axial nebeneinander angeordneten Beschichtungen 4,5 gebildet. Dabei hat die in axialer Richtung betrachtet, mittlere Beschichtung 5 eine Ausdehnung in axialer Richtung zwischen 30 und 100 cm.In order to improve the winding process in general, but in particular the winding and unwinding of the tip of the fibrous web, the outer lateral surface of the spool 1 is formed by three circumferential and axially adjacent coatings 4, 5. When viewed in the axial direction, the middle coating 5 has an expansion in the axial direction between 30 and 100 cm.

Beim Anwickeln wird eine, in der Regel bahnmittig vorhandene Spitze der Faserstoffbahn 2 mit dem leeren Tambour 1 in Kontakt gebracht und aufgewickelt, wobei sich die Bahnbreite stetig vergrößert.
Zur Verbesserung der Haftung am Tambour 1 wird diese Spitze der Faserstoffbahn 2 meist mit Klebstoff versehen.During the winding process, a tip of the fibrous web 2, which is generally present in the middle of the web, is brought into contact with the empty reel 1 and wound up, the web width increasing continuously.
To improve the adhesion to the drum 1, this tip of the fibrous web 2 is usually provided with adhesive.

Probleme bereitet dieser Klebstoff allerdings oft dann, wenn diese Spitze beim Abwickeln der Faserstoffbahn 2 wieder vom Tambour getrennt werden muss.However, this adhesive often causes problems when this tip has to be separated from the reel again when unwinding the fibrous web 2.

Daher wird bei Figur 4 die axial, mittlere Beschichtung 5 von einem Teflon-Klebeband gebildet, welches in der axial durchgehend verlaufenden Beschichtung 4 aus hartem PU oder Gummi eingebettet ist. Dementsprechend bildet diese durchgehende Beschichtung 4 auch die beiden axial seitlichen Beschichtungen 4 der Mantelfläche.Therefore at Figure 4 the axial, middle coating 5 is formed by a Teflon adhesive tape, which is embedded in the axially continuous coating 4 made of hard PU or rubber. Accordingly, this continuous coating 4 also forms the two axially lateral coatings 4 of the lateral surface.

Das Teflon-Klebeband kann problemlos auf eine axial mittlere Aussparung in der durchgehenden Beschichtung 4 aufgewickelt werden. Wegen der im Vergleich zu den seitlichen Beschichtungen 4 glatteren Oberfläche des Teflon-Klebebandes haftet die Spitze der Faserstoffbahn 2 beim Anwickeln wesentlich stärker an der Mantelfläche des Tambours 1.
Gleichzeitig lässt sich beim Abwickeln aber auch die oft angeklebte Spitze der Faserstoffbahn 1 leichter vom Tambour 1 lösen.
Alternativ kann die axial mittlere Beschichtung 5 in Form eines Teflon-Klebebandes entsprechend Figur 7 auch auf die axial durchgehend verlaufende Beschichtung 4 aus hartem PU oder Gummi aufgebracht, insbesondere aufgeklebt werden. Dabei überragt die axial mittlere Beschichtung 5 die benachbarten Beschichtungen 4 geringfügig um 0,05 bis 0,25 mm, was sich aber nicht auf die Wickelqualität auswirkt.The Teflon adhesive tape can easily be wound onto an axially central recess in the continuous coating 4. Because of the smoother surface of the Teflon adhesive tape compared to the lateral coatings 4, the tip of the fibrous web 2 adheres to the outer surface of the drum 1 much more strongly during the winding.
At the same time, however, the often glued-on tip of the fibrous web 1 can more easily be detached from the reel 1 during unwinding.
Alternatively, the axially central coating 5 in the form of a Teflon adhesive tape can be used accordingly Figure 7 also applied, in particular glued, to the axially continuous coating 4 made of hard PU or rubber. The axially central coating 5 projects slightly beyond the adjacent coatings 4 by 0.05 to 0.25 mm, but this does not affect the winding quality.

Im Unterschied hierzu wird die axial mittlere Beschichtung 5 bei der Ausführung gemäß Figur 5 von zwei radial übereinanderliegenden Schichten 6,7 gebildet. Während die radial äußere Schicht 6 wiederum zur Bildung einer glatten Mantelfläche von einem glatten Teflon-Klebeband gebildet wird, besteht die radial innere Schicht 7 aus einem PU-Band mit Silikonbeschichtung.In contrast to this, the axially central coating 5 is designed according to FIG Figure 5 formed by two radially superimposed layers 6.7. While the radially outer layer 6 is in turn formed by a smooth Teflon adhesive tape to form a smooth outer surface, the radially inner layer 7 consists of a PU tape with a silicone coating.

Diese radial innere Schicht 7 ist wesentlich elastischer als die radial darüber liegende Schicht 6 und die axial durchgehende Beschichtung 4 des Tambour-Kerns 3.This radially inner layer 7 is considerably more elastic than the radially overlying layer 6 and the axially continuous coating 4 of the drum core 3.

Über die erhöhte Kompressibilität der mittleren Beschichtung 5 kann sich die Spitze der Faserstoffbahn 2 so beim Anwickeln leichter in den Tambour 2 eindrücken, so dass sich diese Spitze nicht in der aufgewickelten Faserstoffbahn 1 abbildet und zu Markierungen führt.As a result of the increased compressibility of the middle coating 5, the tip of the fibrous web 2 can be pressed more easily into the drum 2 during winding, so that this tip does not form in the wound fibrous web 1 and leads to markings.

Im Gegensatz dazu wird bei Figur 3 die mittlere Beschichtung 5 direkt auf den Tambour-Kern 3 aufgetragen. Dabei kann die mittlere Beschichtung 5 elastischer sein als und/oder eine glattere Mantelfläche haben als die beiden seitlichen Beschichtungen 4.In contrast, at Figure 3 the middle coating 5 applied directly to the drum core 3. The middle coating 5 can be more elastic than and / or have a smoother lateral surface than the two side coatings 4.

Bei dem in Figur 6 gezeigten Tambour 1 hat die axial mittlere Beschichtung 5 wie bei Figur 7 einen größeren Außendurchmesser als die axial äußeren Beschichtungen 4. Über den größeren Durchmesser wird eine sichere und intensive Spaltbildung mit der Tragtrommel 8 zur stärkeren Anpressung der Spitze der Faserstoffbahn 2 an den Tambour 1 beim Anwickeln sichergestellt.
Um Einprägungen bei der Faserstoffbahn 2 zu verhindern, sollte der Übergang von dem geringeren Durchmesser der seitlichen Beschichtungen 4 zum größeren Durchmesser der mittleren Beschichtung 5 allmählich verlaufen. Außerdem ist der Durchmesser der mittleren Beschichtung 5 hier lediglich 0,1 bis 2 mm größer als der Durchmesser der seitlichen Beschichtungen 4.At the in Figure 6 drum 1 shown has the axially central coating 5 as in Figure 7 a larger outer diameter than the axially outer coatings 4. The larger diameter ensures a safe and intensive gap formation with the support drum 8 for the stronger pressing of the tip of the fibrous web 2 against the reel 1 during winding.
In order to prevent embossing in the fibrous web 2, the transition from the smaller diameter of the side coatings 4 to the larger diameter of the middle coating 5 should be gradual. In addition, the diameter of the middle coating 5 here is only 0.1 to 2 mm larger than the diameter of the side coatings 4.

Die Dicke der, in die axial durchgehenden Beschichtung 4 eingebetteten, mittleren Beschichtung 5 liegt zwischen 0,1 und 5 mm, insbesondere zwischen 0,1 bis 2,5 mm.The thickness of the middle coating 5 embedded in the axially continuous coating 4 is between 0.1 and 5 mm, in particular between 0.1 and 2.5 mm.

Die Gesamtdicke der Beschichtungen 4,5 auf dem Tambour-Kern 3 beträgt 5 - 20 mm.The total thickness of the coatings 4.5 on the drum core 3 is 5-20 mm.

Claims (14)

  1. Spool (1) for winding up a fibrous web (2), comprising a spool core (3) with a coating (4, 5) that forms the lateral surface of the spool (1), wherein the outer lateral surface is formed by a plurality of separate coatings (4, 5) arranged axially next to one another, at least two adjacent coatings (4, 5) of which consist of different material, characterized in that at least one coating (4, 5) consists at least partially of Teflon and/or an axially central coating (5) has a larger outer diameter than the outer coatings (4).
  2. Spool according to Claim 1, characterized in that the lateral surface is formed by three coatings (4, 5) arranged axially next to one another.
  3. Spool according to Claim 1 or 2, characterized in that an axially central coating (5) has a smoother surface than the outer coatings (4), wherein the roughness Ra of the relatively smooth, central coating (5) is preferably smaller than 0.2 µm and/or that of the less-smooth, axially outer coatings (4) is greater than 0.6 µm.
  4. Spool according to one of the preceding claims, characterized in that at least one axially central coating (5) consists at least partially of Teflon.
  5. Spool according to one of the preceding claims, characterized in that an axially central coating (5) has a higher elasticity than the outer coatings (4).
  6. Spool according to one of the preceding claims, characterized in that an axially central coating (5) has an outer diameter that is 0.05 to 0.25 mm larger than that of the outer coatings (4).
  7. Spool according to one of the preceding claims, characterized in that an axially central coating (5) is supported directly on the spool core (3).
  8. Spool according to one of Claims 1 to 6, characterized in that an axially central coating (5) is embedded in a coating (4) that reaches over the entire axial extent of the spool core (3).
  9. Spool according to one of Claims 1 to 6, characterized in that an axially central coating (5) is applied to a coating (4) that reaches over the entire axial extent of the spool core (3).
  10. Spool according to one of the preceding claims, characterized in that at least one, preferably an axially central, coating is formed by a fabric strip.
  11. Spool according to one of the preceding claims, characterized in that an axially central coating (5) is formed from at least two layers (6, 7) that lie radially on top of one another.
  12. Spool according to Claim 11, characterized in that the radially inner layer (7) is more elastic than the radially outer layer (6) of the axially central coating (5).
  13. Spool according to one of the preceding claims, characterized in that the axial length of an axially central coating (5) is between 10 and 200 cm, preferably between 30 and 100 cm.
  14. Spool according to one of the preceding claims, characterized in that the axially outer coatings (4) consist of rubber or PU.
EP16797859.2A 2015-11-20 2016-11-16 Spool Active EP3377431B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015222927.0A DE102015222927A1 (en) 2015-11-20 2015-11-20 drummer
PCT/EP2016/077799 WO2017085091A1 (en) 2015-11-20 2016-11-16 Spool

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EP3377431A1 EP3377431A1 (en) 2018-09-26
EP3377431B1 true EP3377431B1 (en) 2020-04-29

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US (1) US10793393B2 (en)
EP (1) EP3377431B1 (en)
CN (1) CN108137255B (en)
CA (1) CA3001770C (en)
DE (1) DE102015222927A1 (en)
WO (1) WO2017085091A1 (en)

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US3813026A (en) * 1968-02-07 1974-05-28 Lhomme Sa Accurately dimensioned smooth-surfaced multi-layer cardboard tubes and method of and apparatus for making the same
NO790519L (en) * 1978-06-21 1979-12-27 Ahlstroem Oy SPIRAL WRAPPED SLEEVE, METHOD FOR MANUFACTURING THE SLEEVE, PROCEDURE FOR USING THE SLEEVE IN A WRAPPING APPLIANCE AND DEVICE FOR USING THE SLEEVE
US4287244A (en) * 1979-12-03 1981-09-01 Sonoco Products Company Method for reverse printing on coated tube papers and tubes produced from the paper
FI109989B (en) 1999-11-25 2002-11-15 Metso Paper Inc Procedure and apparatus for rolling change
JP2002187109A (en) * 2000-12-20 2002-07-02 Meinan Mach Works Inc Method for forming engaged part of thread in winder for veneer
DE10154759A1 (en) * 2001-11-09 2003-05-22 Voith Paper Patent Gmbh Roll for winding a material web and method for improving the winding quality
FI120441B (en) * 2006-02-02 2009-10-30 Metso Paper Inc Wheelchair for a wheelchair in a fiber web machine
KR101041471B1 (en) * 2008-12-16 2011-06-16 김수현 Roller for removing static electricity and manufacturing method thereof
GB0911163D0 (en) * 2009-06-29 2009-08-12 Th Group Ltd Improved adhesive sheeted roll
US20110057069A1 (en) * 2009-09-09 2011-03-10 Sonoco Development, Inc. Coated Paperboard Core For Elastomeric Fiber Production
CN202670923U (en) * 2012-07-23 2013-01-16 佛山市鼎天保护膜有限公司 Core roller of protective film roller
CN203877596U (en) * 2014-01-23 2014-10-15 苏州涂冠镀膜科技有限公司 Coating roller conveying thin-wall aluminum
DE202014010451U1 (en) * 2014-08-25 2015-08-11 Voith Patent Gmbh drummer

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Publication number Publication date
CN108137255B (en) 2021-09-03
CN108137255A (en) 2018-06-08
DE102015222927A1 (en) 2017-06-08
CA3001770C (en) 2023-09-26
CA3001770A1 (en) 2017-05-26
US10793393B2 (en) 2020-10-06
WO2017085091A1 (en) 2017-05-26
EP3377431A1 (en) 2018-09-26
US20180265326A1 (en) 2018-09-20

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